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An attempt at getting image data back

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This commit is contained in:
Sebastiaan de Schaetzen
2024-07-14 00:27:33 +02:00
parent e026bc93f7
commit 6452d2e774
1314 changed files with 218350 additions and 38 deletions
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spider-cam/libcamera/include/android/hardware/libhardware/include/hardware/camera3.h Normal file
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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// FIXME: add well-defined names for cameras
#ifndef ANDROID_INCLUDE_CAMERA_COMMON_H
#define ANDROID_INCLUDE_CAMERA_COMMON_H
#include <stdint.h>
#include <stdbool.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <cutils/native_handle.h>
#include <system/camera.h>
#include <system/camera_vendor_tags.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
__BEGIN_DECLS
/**
* The id of this module
*/
#define CAMERA_HARDWARE_MODULE_ID "camera"
/**
* Module versioning information for the Camera hardware module, based on
* camera_module_t.common.module_api_version. The two most significant hex
* digits represent the major version, and the two least significant represent
* the minor version.
*
*******************************************************************************
* Versions: 0.X - 1.X [CAMERA_MODULE_API_VERSION_1_0]
*
* Camera modules that report these version numbers implement the initial
* camera module HAL interface. All camera devices openable through this
* module support only version 1 of the camera device HAL. The device_version
* and static_camera_characteristics fields of camera_info are not valid. Only
* the android.hardware.Camera API can be supported by this module and its
* devices.
*
*******************************************************************************
* Version: 2.0 [CAMERA_MODULE_API_VERSION_2_0]
*
* Camera modules that report this version number implement the second version
* of the camera module HAL interface. Camera devices openable through this
* module may support either version 1.0 or version 2.0 of the camera device
* HAL interface. The device_version field of camera_info is always valid; the
* static_camera_characteristics field of camera_info is valid if the
* device_version field is 2.0 or higher.
*
*******************************************************************************
* Version: 2.1 [CAMERA_MODULE_API_VERSION_2_1]
*
* This camera module version adds support for asynchronous callbacks to the
* framework from the camera HAL module, which is used to notify the framework
* about changes to the camera module state. Modules that provide a valid
* set_callbacks() method must report at least this version number.
*
*******************************************************************************
* Version: 2.2 [CAMERA_MODULE_API_VERSION_2_2]
*
* This camera module version adds vendor tag support from the module, and
* deprecates the old vendor_tag_query_ops that were previously only
* accessible with a device open.
*
*******************************************************************************
* Version: 2.3 [CAMERA_MODULE_API_VERSION_2_3]
*
* This camera module version adds open legacy camera HAL device support.
* Framework can use it to open the camera device as lower device HAL version
* HAL device if the same device can support multiple device API versions.
* The standard hardware module open call (common.methods->open) continues
* to open the camera device with the latest supported version, which is
* also the version listed in camera_info_t.device_version.
*
*******************************************************************************
* Version: 2.4 [CAMERA_MODULE_API_VERSION_2_4]
*
* This camera module version adds below API changes:
*
* 1. Torch mode support. The framework can use it to turn on torch mode for
* any camera device that has a flash unit, without opening a camera device. The
* camera device has a higher priority accessing the flash unit than the camera
* module; opening a camera device will turn off the torch if it had been enabled
* through the module interface. When there are any resource conflicts, such as
* open() is called to open a camera device, the camera HAL module must notify the
* framework through the torch mode status callback that the torch mode has been
* turned off.
*
* 2. External camera (e.g. USB hot-plug camera) support. The API updates specify that
* the camera static info is only available when camera is connected and ready to
* use for external hot-plug cameras. Calls to get static info will be invalid
* calls when camera status is not CAMERA_DEVICE_STATUS_PRESENT. The frameworks
* will only count on device status change callbacks to manage the available external
* camera list.
*
* 3. Camera arbitration hints. This module version adds support for explicitly
* indicating the number of camera devices that can be simultaneously opened and used.
* To specify valid combinations of devices, the resource_cost and conflicting_devices
* fields should always be set in the camera_info structure returned by the
* get_camera_info call.
*
* 4. Module initialization method. This will be called by the camera service
* right after the HAL module is loaded, to allow for one-time initialization
* of the HAL. It is called before any other module methods are invoked.
*/
/**
* Predefined macros for currently-defined version numbers
*/
/**
* All module versions <= HARDWARE_MODULE_API_VERSION(1, 0xFF) must be treated
* as CAMERA_MODULE_API_VERSION_1_0
*/
#define CAMERA_MODULE_API_VERSION_1_0 HARDWARE_MODULE_API_VERSION(1, 0)
#define CAMERA_MODULE_API_VERSION_2_0 HARDWARE_MODULE_API_VERSION(2, 0)
#define CAMERA_MODULE_API_VERSION_2_1 HARDWARE_MODULE_API_VERSION(2, 1)
#define CAMERA_MODULE_API_VERSION_2_2 HARDWARE_MODULE_API_VERSION(2, 2)
#define CAMERA_MODULE_API_VERSION_2_3 HARDWARE_MODULE_API_VERSION(2, 3)
#define CAMERA_MODULE_API_VERSION_2_4 HARDWARE_MODULE_API_VERSION(2, 4)
#define CAMERA_MODULE_API_VERSION_CURRENT CAMERA_MODULE_API_VERSION_2_4
/**
* All device versions <= HARDWARE_DEVICE_API_VERSION(1, 0xFF) must be treated
* as CAMERA_DEVICE_API_VERSION_1_0
*/
#define CAMERA_DEVICE_API_VERSION_1_0 HARDWARE_DEVICE_API_VERSION(1, 0) // DEPRECATED
#define CAMERA_DEVICE_API_VERSION_2_0 HARDWARE_DEVICE_API_VERSION(2, 0) // NO LONGER SUPPORTED
#define CAMERA_DEVICE_API_VERSION_2_1 HARDWARE_DEVICE_API_VERSION(2, 1) // NO LONGER SUPPORTED
#define CAMERA_DEVICE_API_VERSION_3_0 HARDWARE_DEVICE_API_VERSION(3, 0) // NO LONGER SUPPORTED
#define CAMERA_DEVICE_API_VERSION_3_1 HARDWARE_DEVICE_API_VERSION(3, 1) // NO LONGER SUPPORTED
#define CAMERA_DEVICE_API_VERSION_3_2 HARDWARE_DEVICE_API_VERSION(3, 2)
#define CAMERA_DEVICE_API_VERSION_3_3 HARDWARE_DEVICE_API_VERSION(3, 3)
#define CAMERA_DEVICE_API_VERSION_3_4 HARDWARE_DEVICE_API_VERSION(3, 4)
#define CAMERA_DEVICE_API_VERSION_3_5 HARDWARE_DEVICE_API_VERSION(3, 5)
// Device version 3.5 is current, older HAL camera device versions are not
// recommended for new devices.
#define CAMERA_DEVICE_API_VERSION_CURRENT CAMERA_DEVICE_API_VERSION_3_5
/**
* Defined in /system/media/camera/include/system/camera_metadata.h
*/
typedef struct camera_metadata camera_metadata_t;
typedef struct camera_info {
/**
* The direction that the camera faces to. See system/core/include/system/camera.h
* for camera facing definitions.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_2_3 or lower:
*
* It should be CAMERA_FACING_BACK or CAMERA_FACING_FRONT.
*
* CAMERA_MODULE_API_VERSION_2_4 or higher:
*
* It should be CAMERA_FACING_BACK, CAMERA_FACING_FRONT or
* CAMERA_FACING_EXTERNAL.
*/
int facing;
/**
* The orientation of the camera image. The value is the angle that the
* camera image needs to be rotated clockwise so it shows correctly on the
* display in its natural orientation. It should be 0, 90, 180, or 270.
*
* For example, suppose a device has a naturally tall screen. The
* back-facing camera sensor is mounted in landscape. You are looking at the
* screen. If the top side of the camera sensor is aligned with the right
* edge of the screen in natural orientation, the value should be 90. If the
* top side of a front-facing camera sensor is aligned with the right of the
* screen, the value should be 270.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_2_3 or lower:
*
* Valid in all camera_module versions.
*
* CAMERA_MODULE_API_VERSION_2_4 or higher:
*
* Valid if camera facing is CAMERA_FACING_BACK or CAMERA_FACING_FRONT,
* not valid if camera facing is CAMERA_FACING_EXTERNAL.
*/
int orientation;
/**
* The value of camera_device_t.common.version.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_1_0:
*
* Not valid. Can be assumed to be CAMERA_DEVICE_API_VERSION_1_0. Do
* not read this field.
*
* CAMERA_MODULE_API_VERSION_2_0 or higher:
*
* Always valid
*
*/
uint32_t device_version;
/**
* The camera's fixed characteristics, which include all static camera metadata
* specified in system/media/camera/docs/docs.html. This should be a sorted metadata
* buffer, and may not be modified or freed by the caller. The pointer should remain
* valid for the lifetime of the camera module, and values in it may not
* change after it is returned by get_camera_info().
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_1_0:
*
* Not valid. Extra characteristics are not available. Do not read this
* field.
*
* CAMERA_MODULE_API_VERSION_2_0 or higher:
*
* Valid if device_version >= CAMERA_DEVICE_API_VERSION_2_0. Do not read
* otherwise.
*
*/
const camera_metadata_t *static_camera_characteristics;
/**
* The total resource "cost" of using this camera, represented as an integer
* value in the range [0, 100] where 100 represents total usage of the shared
* resource that is the limiting bottleneck of the camera subsystem. This may
* be a very rough estimate, and is used as a hint to the camera service to
* determine when to disallow multiple applications from simultaneously
* opening different cameras advertised by the camera service.
*
* The camera service must be able to simultaneously open and use any
* combination of camera devices exposed by the HAL where the sum of
* the resource costs of these cameras is <= 100. For determining cost,
* each camera device must be assumed to be configured and operating at
* the maximally resource-consuming framerate and stream size settings
* available in the configuration settings exposed for that device through
* the camera metadata.
*
* The camera service may still attempt to simultaneously open combinations
* of camera devices with a total resource cost > 100. This may succeed or
* fail. If this succeeds, combinations of configurations that are not
* supported due to resource constraints from having multiple open devices
* should fail during the configure calls. If the total resource cost is
* <= 100, open and configure should never fail for any stream configuration
* settings or other device capabilities that would normally succeed for a
* device when it is the only open camera device.
*
* This field will be used to determine whether background applications are
* allowed to use this camera device while other applications are using other
* camera devices. Note: multiple applications will never be allowed by the
* camera service to simultaneously open the same camera device.
*
* Example use cases:
*
* Ex. 1: Camera Device 0 = Back Camera
* Camera Device 1 = Front Camera
* - Using both camera devices causes a large framerate slowdown due to
* limited ISP bandwidth.
*
* Configuration:
*
* Camera Device 0 - resource_cost = 51
* conflicting_devices = null
* Camera Device 1 - resource_cost = 51
* conflicting_devices = null
*
* Result:
*
* Since the sum of the resource costs is > 100, if a higher-priority
* application has either device open, no lower-priority applications will be
* allowed by the camera service to open either device. If a lower-priority
* application is using a device that a higher-priority subsequently attempts
* to open, the lower-priority application will be forced to disconnect the
* the device.
*
* If the highest-priority application chooses, it may still attempt to open
* both devices (since these devices are not listed as conflicting in the
* conflicting_devices fields), but usage of these devices may fail in the
* open or configure calls.
*
* Ex. 2: Camera Device 0 = Left Back Camera
* Camera Device 1 = Right Back Camera
* Camera Device 2 = Combined stereo camera using both right and left
* back camera sensors used by devices 0, and 1
* Camera Device 3 = Front Camera
* - Due to do hardware constraints, up to two cameras may be open at once. The
* combined stereo camera may never be used at the same time as either of the
* two back camera devices (device 0, 1), and typically requires too much
* bandwidth to use at the same time as the front camera (device 3).
*
* Configuration:
*
* Camera Device 0 - resource_cost = 50
* conflicting_devices = { 2 }
* Camera Device 1 - resource_cost = 50
* conflicting_devices = { 2 }
* Camera Device 2 - resource_cost = 100
* conflicting_devices = { 0, 1 }
* Camera Device 3 - resource_cost = 50
* conflicting_devices = null
*
* Result:
*
* Based on the conflicting_devices fields, the camera service guarantees that
* the following sets of open devices will never be allowed: { 1, 2 }, { 0, 2 }.
*
* Based on the resource_cost fields, if a high-priority foreground application
* is using camera device 0, a background application would be allowed to open
* camera device 1 or 3 (but would be forced to disconnect it again if the
* foreground application opened another device).
*
* The highest priority application may still attempt to simultaneously open
* devices 0, 2, and 3, but the HAL may fail in open or configure calls for
* this combination.
*
* Ex. 3: Camera Device 0 = Back Camera
* Camera Device 1 = Front Camera
* Camera Device 2 = Low-power Front Camera that uses the same
* sensor as device 1, but only exposes image stream
* resolutions that can be used in low-power mode
* - Using both front cameras (device 1, 2) at the same time is impossible due
* a shared physical sensor. Using the back and "high-power" front camera
* (device 1) may be impossible for some stream configurations due to hardware
* limitations, but the "low-power" front camera option may always be used as
* it has special dedicated hardware.
*
* Configuration:
*
* Camera Device 0 - resource_cost = 100
* conflicting_devices = null
* Camera Device 1 - resource_cost = 100
* conflicting_devices = { 2 }
* Camera Device 2 - resource_cost = 0
* conflicting_devices = { 1 }
* Result:
*
* Based on the conflicting_devices fields, the camera service guarantees that
* the following sets of open devices will never be allowed: { 1, 2 }.
*
* Based on the resource_cost fields, only the highest priority application
* may attempt to open both device 0 and 1 at the same time. If a higher-priority
* application is not using device 1 or 2, a low-priority background application
* may open device 2 (but will be forced to disconnect it if a higher-priority
* application subsequently opens device 1 or 2).
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_2_3 or lower:
*
* Not valid. Can be assumed to be 100. Do not read this field.
*
* CAMERA_MODULE_API_VERSION_2_4 or higher:
*
* Always valid.
*/
int resource_cost;
/**
* An array of camera device IDs represented as NULL-terminated strings
* indicating other devices that cannot be simultaneously opened while this
* camera device is in use.
*
* This field is intended to be used to indicate that this camera device
* is a composite of several other camera devices, or otherwise has
* hardware dependencies that prohibit simultaneous usage. If there are no
* dependencies, a NULL may be returned in this field to indicate this.
*
* The camera service will never simultaneously open any of the devices
* in this list while this camera device is open.
*
* The strings pointed to in this field will not be cleaned up by the camera
* service, and must remain while this device is plugged in.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_2_3 or lower:
*
* Not valid. Can be assumed to be NULL. Do not read this field.
*
* CAMERA_MODULE_API_VERSION_2_4 or higher:
*
* Always valid.
*/
char** conflicting_devices;
/**
* The length of the array given in the conflicting_devices field.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_2_3 or lower:
*
* Not valid. Can be assumed to be 0. Do not read this field.
*
* CAMERA_MODULE_API_VERSION_2_4 or higher:
*
* Always valid.
*/
size_t conflicting_devices_length;
} camera_info_t;
/**
* camera_device_status_t:
*
* The current status of the camera device, as provided by the HAL through the
* camera_module_callbacks.camera_device_status_change() call.
*
* At module load time, the framework will assume all camera devices are in the
* CAMERA_DEVICE_STATUS_PRESENT state. The HAL should invoke
* camera_module_callbacks::camera_device_status_change to inform the framework
* of any initially NOT_PRESENT devices.
*
* Allowed transitions:
* PRESENT -> NOT_PRESENT
* NOT_PRESENT -> ENUMERATING
* NOT_PRESENT -> PRESENT
* ENUMERATING -> PRESENT
* ENUMERATING -> NOT_PRESENT
*/
typedef enum camera_device_status {
/**
* The camera device is not currently connected, and opening it will return
* failure.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_2_3 or lower:
*
* Calls to get_camera_info must still succeed, and provide the same information
* it would if the camera were connected.
*
* CAMERA_MODULE_API_VERSION_2_4:
*
* The camera device at this status must return -EINVAL for get_camera_info call,
* as the device is not connected.
*/
CAMERA_DEVICE_STATUS_NOT_PRESENT = 0,
/**
* The camera device is connected, and opening it will succeed.
*
* CAMERA_MODULE_API_VERSION_2_3 or lower:
*
* The information returned by get_camera_info cannot change due to this status
* change. By default, the framework will assume all devices are in this state.
*
* CAMERA_MODULE_API_VERSION_2_4:
*
* The information returned by get_camera_info will become valid after a device's
* status changes to this. By default, the framework will assume all devices are in
* this state.
*/
CAMERA_DEVICE_STATUS_PRESENT = 1,
/**
* The camera device is connected, but it is undergoing an enumeration and
* so opening the device will return -EBUSY.
*
* CAMERA_MODULE_API_VERSION_2_3 or lower:
*
* Calls to get_camera_info must still succeed, as if the camera was in the
* PRESENT status.
*
* CAMERA_MODULE_API_VERSION_2_4:
*
* The camera device at this status must return -EINVAL for get_camera_info for call,
* as the device is not ready.
*/
CAMERA_DEVICE_STATUS_ENUMERATING = 2,
} camera_device_status_t;
/**
* torch_mode_status_t:
*
* The current status of the torch mode, as provided by the HAL through the
* camera_module_callbacks.torch_mode_status_change() call.
*
* The torch mode status of a camera device is applicable only when the camera
* device is present. The framework will not call set_torch_mode() to turn on
* torch mode of a camera device if the camera device is not present. At module
* load time, the framework will assume torch modes are in the
* TORCH_MODE_STATUS_AVAILABLE_OFF state if the camera device is present and
* android.flash.info.available is reported as true via get_camera_info() call.
*
* The behaviors of the camera HAL module that the framework expects in the
* following situations when a camera device's status changes:
* 1. A previously-disconnected camera device becomes connected.
* After camera_module_callbacks::camera_device_status_change() is invoked
* to inform the framework that the camera device is present, the framework
* will assume the camera device's torch mode is in
* TORCH_MODE_STATUS_AVAILABLE_OFF state. The camera HAL module does not need
* to invoke camera_module_callbacks::torch_mode_status_change() unless the
* flash unit is unavailable to use by set_torch_mode().
*
* 2. A previously-connected camera becomes disconnected.
* After camera_module_callbacks::camera_device_status_change() is invoked
* to inform the framework that the camera device is not present, the
* framework will not call set_torch_mode() for the disconnected camera
* device until its flash unit becomes available again. The camera HAL
* module does not need to invoke
* camera_module_callbacks::torch_mode_status_change() separately to inform
* that the flash unit has become unavailable.
*
* 3. open() is called to open a camera device.
* The camera HAL module must invoke
* camera_module_callbacks::torch_mode_status_change() for all flash units
* that have entered TORCH_MODE_STATUS_NOT_AVAILABLE state and can not be
* turned on by calling set_torch_mode() anymore due to this open() call.
* open() must not trigger TORCH_MODE_STATUS_AVAILABLE_OFF before
* TORCH_MODE_STATUS_NOT_AVAILABLE for all flash units that have become
* unavailable.
*
* 4. close() is called to close a camera device.
* The camera HAL module must invoke
* camera_module_callbacks::torch_mode_status_change() for all flash units
* that have entered TORCH_MODE_STATUS_AVAILABLE_OFF state and can be turned
* on by calling set_torch_mode() again because of enough resources freed
* up by this close() call.
*
* Note that the framework calling set_torch_mode() successfully must trigger
* TORCH_MODE_STATUS_AVAILABLE_OFF or TORCH_MODE_STATUS_AVAILABLE_ON callback
* for the given camera device. Additionally it must trigger
* TORCH_MODE_STATUS_AVAILABLE_OFF callbacks for other previously-on torch
* modes if HAL cannot keep multiple torch modes on simultaneously.
*/
typedef enum torch_mode_status {
/**
* The flash unit is no longer available and the torch mode can not be
* turned on by calling set_torch_mode(). If the torch mode is on, it
* will be turned off by HAL before HAL calls torch_mode_status_change().
*/
TORCH_MODE_STATUS_NOT_AVAILABLE = 0,
/**
* A torch mode has become off and available to be turned on via
* set_torch_mode(). This may happen in the following
* cases:
* 1. After the resources to turn on the torch mode have become available.
* 2. After set_torch_mode() is called to turn off the torch mode.
* 3. After the framework turned on the torch mode of some other camera
* device and HAL had to turn off the torch modes of any camera devices
* that were previously on.
*/
TORCH_MODE_STATUS_AVAILABLE_OFF = 1,
/**
* A torch mode has become on and available to be turned off via
* set_torch_mode(). This can happen only after set_torch_mode() is called
* to turn on the torch mode.
*/
TORCH_MODE_STATUS_AVAILABLE_ON = 2,
} torch_mode_status_t;
/**
* Callback functions for the camera HAL module to use to inform the framework
* of changes to the camera subsystem.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* Each callback is called only by HAL modules implementing the indicated
* version or higher of the HAL module API interface.
*
* CAMERA_MODULE_API_VERSION_2_1:
* camera_device_status_change()
*
* CAMERA_MODULE_API_VERSION_2_4:
* torch_mode_status_change()
*/
typedef struct camera_module_callbacks {
/**
* camera_device_status_change:
*
* Callback to the framework to indicate that the state of a specific camera
* device has changed. At module load time, the framework will assume all
* camera devices are in the CAMERA_DEVICE_STATUS_PRESENT state. The HAL
* must call this method to inform the framework of any initially
* NOT_PRESENT devices.
*
* This callback is added for CAMERA_MODULE_API_VERSION_2_1.
*
* camera_module_callbacks: The instance of camera_module_callbacks_t passed
* to the module with set_callbacks.
*
* camera_id: The ID of the camera device that has a new status.
*
* new_status: The new status code, one of the camera_device_status_t enums,
* or a platform-specific status.
*
*/
void (*camera_device_status_change)(const struct camera_module_callbacks*,
int camera_id,
int new_status);
/**
* torch_mode_status_change:
*
* Callback to the framework to indicate that the state of the torch mode
* of the flash unit associated with a specific camera device has changed.
* At module load time, the framework will assume the torch modes are in
* the TORCH_MODE_STATUS_AVAILABLE_OFF state if android.flash.info.available
* is reported as true via get_camera_info() call.
*
* This callback is added for CAMERA_MODULE_API_VERSION_2_4.
*
* camera_module_callbacks: The instance of camera_module_callbacks_t
* passed to the module with set_callbacks.
*
* camera_id: The ID of camera device whose flash unit has a new torch mode
* status.
*
* new_status: The new status code, one of the torch_mode_status_t enums.
*/
void (*torch_mode_status_change)(const struct camera_module_callbacks*,
const char* camera_id,
int new_status);
} camera_module_callbacks_t;
typedef struct camera_module {
/**
* Common methods of the camera module. This *must* be the first member of
* camera_module as users of this structure will cast a hw_module_t to
* camera_module pointer in contexts where it's known the hw_module_t
* references a camera_module.
*
* The return values for common.methods->open for camera_module are:
*
* 0: On a successful open of the camera device.
*
* -ENODEV: The camera device cannot be opened due to an internal
* error.
*
* -EINVAL: The input arguments are invalid, i.e. the id is invalid,
* and/or the module is invalid.
*
* -EBUSY: The camera device was already opened for this camera id
* (by using this method or open_legacy),
* regardless of the device HAL version it was opened as.
*
* -EUSERS: The maximal number of camera devices that can be
* opened concurrently were opened already, either by
* this method or the open_legacy method.
*
* All other return values from common.methods->open will be treated as
* -ENODEV.
*/
hw_module_t common;
/**
* get_number_of_cameras:
*
* Returns the number of camera devices accessible through the camera
* module. The camera devices are numbered 0 through N-1, where N is the
* value returned by this call. The name of the camera device for open() is
* simply the number converted to a string. That is, "0" for camera ID 0,
* "1" for camera ID 1.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_2_3 or lower:
*
* The value here must be static, and cannot change after the first call
* to this method.
*
* CAMERA_MODULE_API_VERSION_2_4 or higher:
*
* The value here must be static, and must count only built-in cameras,
* which have CAMERA_FACING_BACK or CAMERA_FACING_FRONT camera facing values
* (camera_info.facing). The HAL must not include the external cameras
* (camera_info.facing == CAMERA_FACING_EXTERNAL) into the return value
* of this call. Frameworks will use camera_device_status_change callback
* to manage number of external cameras.
*/
int (*get_number_of_cameras)(void);
/**
* get_camera_info:
*
* Return the static camera information for a given camera device. This
* information may not change for a camera device.
*
* Return values:
*
* 0: On a successful operation
*
* -ENODEV: The information cannot be provided due to an internal
* error.
*
* -EINVAL: The input arguments are invalid, i.e. the id is invalid,
* and/or the module is invalid.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_2_4 or higher:
*
* When a camera is disconnected, its camera id becomes invalid. Calling this
* this method with this invalid camera id will get -EINVAL and NULL camera
* static metadata (camera_info.static_camera_characteristics).
*/
int (*get_camera_info)(int camera_id, struct camera_info *info);
/**
* set_callbacks:
*
* Provide callback function pointers to the HAL module to inform framework
* of asynchronous camera module events. The framework will call this
* function once after initial camera HAL module load, after the
* get_number_of_cameras() method is called for the first time, and before
* any other calls to the module.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_1_0, CAMERA_MODULE_API_VERSION_2_0:
*
* Not provided by HAL module. Framework may not call this function.
*
* CAMERA_MODULE_API_VERSION_2_1:
*
* Valid to be called by the framework.
*
* Return values:
*
* 0: On a successful operation
*
* -ENODEV: The operation cannot be completed due to an internal
* error.
*
* -EINVAL: The input arguments are invalid, i.e. the callbacks are
* null
*/
int (*set_callbacks)(const camera_module_callbacks_t *callbacks);
/**
* get_vendor_tag_ops:
*
* Get methods to query for vendor extension metadata tag information. The
* HAL should fill in all the vendor tag operation methods, or leave ops
* unchanged if no vendor tags are defined.
*
* The vendor_tag_ops structure used here is defined in:
* system/media/camera/include/system/vendor_tags.h
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_1_x/2_0/2_1:
* Not provided by HAL module. Framework may not call this function.
*
* CAMERA_MODULE_API_VERSION_2_2:
* Valid to be called by the framework.
*/
void (*get_vendor_tag_ops)(vendor_tag_ops_t* ops);
/**
* open_legacy:
*
* Open a specific legacy camera HAL device if multiple device HAL API
* versions are supported by this camera HAL module. For example, if the
* camera module supports both CAMERA_DEVICE_API_VERSION_1_0 and
* CAMERA_DEVICE_API_VERSION_3_2 device API for the same camera id,
* framework can call this function to open the camera device as
* CAMERA_DEVICE_API_VERSION_1_0 device.
*
* This is an optional method. A Camera HAL module does not need to support
* more than one device HAL version per device, and such modules may return
* -ENOSYS for all calls to this method. For all older HAL device API
* versions that are not supported, it may return -EOPNOTSUPP. When above
* cases occur, The normal open() method (common.methods->open) will be
* used by the framework instead.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_1_x/2_0/2_1/2_2:
* Not provided by HAL module. Framework will not call this function.
*
* CAMERA_MODULE_API_VERSION_2_3:
* Valid to be called by the framework.
*
* Return values:
*
* 0: On a successful open of the camera device.
*
* -ENOSYS This method is not supported.
*
* -EOPNOTSUPP: The requested HAL version is not supported by this method.
*
* -EINVAL: The input arguments are invalid, i.e. the id is invalid,
* and/or the module is invalid.
*
* -EBUSY: The camera device was already opened for this camera id
* (by using this method or common.methods->open method),
* regardless of the device HAL version it was opened as.
*
* -EUSERS: The maximal number of camera devices that can be
* opened concurrently were opened already, either by
* this method or common.methods->open method.
*/
int (*open_legacy)(const struct hw_module_t* module, const char* id,
uint32_t halVersion, struct hw_device_t** device);
/**
* set_torch_mode:
*
* Turn on or off the torch mode of the flash unit associated with a given
* camera ID. If the operation is successful, HAL must notify the framework
* torch state by invoking
* camera_module_callbacks.torch_mode_status_change() with the new state.
*
* The camera device has a higher priority accessing the flash unit. When
* there are any resource conflicts, such as open() is called to open a
* camera device, HAL module must notify the framework through
* camera_module_callbacks.torch_mode_status_change() that the
* torch mode has been turned off and the torch mode state has become
* TORCH_MODE_STATUS_NOT_AVAILABLE. When resources to turn on torch mode
* become available again, HAL module must notify the framework through
* camera_module_callbacks.torch_mode_status_change() that the torch mode
* state has become TORCH_MODE_STATUS_AVAILABLE_OFF for set_torch_mode() to
* be called.
*
* When the framework calls set_torch_mode() to turn on the torch mode of a
* flash unit, if HAL cannot keep multiple torch modes on simultaneously,
* HAL should turn off the torch mode that was turned on by
* a previous set_torch_mode() call and notify the framework that the torch
* mode state of that flash unit has become TORCH_MODE_STATUS_AVAILABLE_OFF.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_1_x/2_0/2_1/2_2/2_3:
* Not provided by HAL module. Framework will not call this function.
*
* CAMERA_MODULE_API_VERSION_2_4:
* Valid to be called by the framework.
*
* Return values:
*
* 0: On a successful operation.
*
* -ENOSYS: The camera device does not support this operation. It is
* returned if and only if android.flash.info.available is
* false.
*
* -EBUSY: The camera device is already in use.
*
* -EUSERS: The resources needed to turn on the torch mode are not
* available, typically because other camera devices are
* holding the resources to make using the flash unit not
* possible.
*
* -EINVAL: camera_id is invalid.
*
*/
int (*set_torch_mode)(const char* camera_id, bool enabled);
/**
* init:
*
* This method is called by the camera service before any other methods
* are invoked, right after the camera HAL library has been successfully
* loaded. It may be left as NULL by the HAL module, if no initialization
* in needed.
*
* It can be used by HAL implementations to perform initialization and
* other one-time operations.
*
* Version information (based on camera_module_t.common.module_api_version):
*
* CAMERA_MODULE_API_VERSION_1_x/2_0/2_1/2_2/2_3:
* Not provided by HAL module. Framework will not call this function.
*
* CAMERA_MODULE_API_VERSION_2_4:
* If not NULL, will always be called by the framework once after the HAL
* module is loaded, before any other HAL module method is called.
*
* Return values:
*
* 0: On a successful operation.
*
* -ENODEV: Initialization cannot be completed due to an internal
* error. The HAL must be assumed to be in a nonfunctional
* state.
*
*/
int (*init)();
/* reserved for future use */
void* reserved[5];
} camera_module_t;
__END_DECLS
#endif /* ANDROID_INCLUDE_CAMERA_COMMON_H */

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_FB_INTERFACE_H
#define ANDROID_FB_INTERFACE_H
#include <stdint.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <cutils/native_handle.h>
#include <hardware/hardware.h>
__BEGIN_DECLS
#define GRALLOC_HARDWARE_FB0 "fb0"
/*****************************************************************************/
/*****************************************************************************/
typedef struct framebuffer_device_t {
/**
* Common methods of the framebuffer device. This *must* be the first member of
* framebuffer_device_t as users of this structure will cast a hw_device_t to
* framebuffer_device_t pointer in contexts where it's known the hw_device_t references a
* framebuffer_device_t.
*/
struct hw_device_t common;
/* flags describing some attributes of the framebuffer */
const uint32_t flags;
/* dimensions of the framebuffer in pixels */
const uint32_t width;
const uint32_t height;
/* frambuffer stride in pixels */
const int stride;
/* framebuffer pixel format */
const int format;
/* resolution of the framebuffer's display panel in pixel per inch*/
const float xdpi;
const float ydpi;
/* framebuffer's display panel refresh rate in frames per second */
const float fps;
/* min swap interval supported by this framebuffer */
const int minSwapInterval;
/* max swap interval supported by this framebuffer */
const int maxSwapInterval;
/* Number of framebuffers supported*/
const int numFramebuffers;
int reserved[7];
/*
* requests a specific swap-interval (same definition than EGL)
*
* Returns 0 on success or -errno on error.
*/
int (*setSwapInterval)(struct framebuffer_device_t* window,
int interval);
/*
* This hook is OPTIONAL.
*
* It is non NULL If the framebuffer driver supports "update-on-demand"
* and the given rectangle is the area of the screen that gets
* updated during (*post)().
*
* This is useful on devices that are able to DMA only a portion of
* the screen to the display panel, upon demand -- as opposed to
* constantly refreshing the panel 60 times per second, for instance.
*
* Only the area defined by this rectangle is guaranteed to be valid, that
* is, the driver is not allowed to post anything outside of this
* rectangle.
*
* The rectangle evaluated during (*post)() and specifies which area
* of the buffer passed in (*post)() shall to be posted.
*
* return -EINVAL if width or height <=0, or if left or top < 0
*/
int (*setUpdateRect)(struct framebuffer_device_t* window,
int left, int top, int width, int height);
/*
* Post <buffer> to the display (display it on the screen)
* The buffer must have been allocated with the
* GRALLOC_USAGE_HW_FB usage flag.
* buffer must be the same width and height as the display and must NOT
* be locked.
*
* The buffer is shown during the next VSYNC.
*
* If the same buffer is posted again (possibly after some other buffer),
* post() will block until the the first post is completed.
*
* Internally, post() is expected to lock the buffer so that a
* subsequent call to gralloc_module_t::(*lock)() with USAGE_RENDER or
* USAGE_*_WRITE will block until it is safe; that is typically once this
* buffer is shown and another buffer has been posted.
*
* Returns 0 on success or -errno on error.
*/
int (*post)(struct framebuffer_device_t* dev, buffer_handle_t buffer);
/*
* The (*compositionComplete)() method must be called after the
* compositor has finished issuing GL commands for client buffers.
*/
int (*compositionComplete)(struct framebuffer_device_t* dev);
/*
* This hook is OPTIONAL.
*
* If non NULL it will be caused by SurfaceFlinger on dumpsys
*/
void (*dump)(struct framebuffer_device_t* dev, char *buff, int buff_len);
/*
* (*enableScreen)() is used to either blank (enable=0) or
* unblank (enable=1) the screen this framebuffer is attached to.
*
* Returns 0 on success or -errno on error.
*/
int (*enableScreen)(struct framebuffer_device_t* dev, int enable);
void* reserved_proc[6];
} framebuffer_device_t;
/** convenience API for opening and closing a supported device */
static inline int framebuffer_open(const struct hw_module_t* module,
struct framebuffer_device_t** device) {
return module->methods->open(module,
GRALLOC_HARDWARE_FB0, TO_HW_DEVICE_T_OPEN(device));
}
static inline int framebuffer_close(struct framebuffer_device_t* device) {
return device->common.close(&device->common);
}
__END_DECLS
#endif // ANDROID_FB_INTERFACE_H

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_GRALLOC_INTERFACE_H
#define ANDROID_GRALLOC_INTERFACE_H
#include <hardware/hardware.h>
#include <system/graphics.h>
#include <stdint.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <cutils/native_handle.h>
#include <hardware/fb.h>
#include <hardware/hardware.h>
__BEGIN_DECLS
/**
* Module versioning information for the Gralloc hardware module, based on
* gralloc_module_t.common.module_api_version.
*
* Version History:
*
* GRALLOC_MODULE_API_VERSION_0_1:
* Initial Gralloc hardware module API.
*
* GRALLOC_MODULE_API_VERSION_0_2:
* Add support for flexible YCbCr format with (*lock_ycbcr)() method.
*
* GRALLOC_MODULE_API_VERSION_0_3:
* Add support for fence passing to/from lock/unlock.
*/
#define GRALLOC_MODULE_API_VERSION_0_1 HARDWARE_MODULE_API_VERSION(0, 1)
#define GRALLOC_MODULE_API_VERSION_0_2 HARDWARE_MODULE_API_VERSION(0, 2)
#define GRALLOC_MODULE_API_VERSION_0_3 HARDWARE_MODULE_API_VERSION(0, 3)
#define GRALLOC_DEVICE_API_VERSION_0_1 HARDWARE_DEVICE_API_VERSION(0, 1)
/**
* The id of this module
*/
#define GRALLOC_HARDWARE_MODULE_ID "gralloc"
/**
* Name of the graphics device to open
*/
#define GRALLOC_HARDWARE_GPU0 "gpu0"
enum {
/* buffer is never read in software */
GRALLOC_USAGE_SW_READ_NEVER = 0x00000000U,
/* buffer is rarely read in software */
GRALLOC_USAGE_SW_READ_RARELY = 0x00000002U,
/* buffer is often read in software */
GRALLOC_USAGE_SW_READ_OFTEN = 0x00000003U,
/* mask for the software read values */
GRALLOC_USAGE_SW_READ_MASK = 0x0000000FU,
/* buffer is never written in software */
GRALLOC_USAGE_SW_WRITE_NEVER = 0x00000000U,
/* buffer is rarely written in software */
GRALLOC_USAGE_SW_WRITE_RARELY = 0x00000020U,
/* buffer is often written in software */
GRALLOC_USAGE_SW_WRITE_OFTEN = 0x00000030U,
/* mask for the software write values */
GRALLOC_USAGE_SW_WRITE_MASK = 0x000000F0U,
/* buffer will be used as an OpenGL ES texture */
GRALLOC_USAGE_HW_TEXTURE = 0x00000100U,
/* buffer will be used as an OpenGL ES render target */
GRALLOC_USAGE_HW_RENDER = 0x00000200U,
/* buffer will be used by the 2D hardware blitter */
GRALLOC_USAGE_HW_2D = 0x00000400U,
/* buffer will be used by the HWComposer HAL module */
GRALLOC_USAGE_HW_COMPOSER = 0x00000800U,
/* buffer will be used with the framebuffer device */
GRALLOC_USAGE_HW_FB = 0x00001000U,
/* buffer should be displayed full-screen on an external display when
* possible */
GRALLOC_USAGE_EXTERNAL_DISP = 0x00002000U,
/* Must have a hardware-protected path to external display sink for
* this buffer. If a hardware-protected path is not available, then
* either don't composite only this buffer (preferred) to the
* external sink, or (less desirable) do not route the entire
* composition to the external sink. */
GRALLOC_USAGE_PROTECTED = 0x00004000U,
/* buffer may be used as a cursor */
GRALLOC_USAGE_CURSOR = 0x00008000U,
/* buffer will be used with the HW video encoder */
GRALLOC_USAGE_HW_VIDEO_ENCODER = 0x00010000U,
/* buffer will be written by the HW camera pipeline */
GRALLOC_USAGE_HW_CAMERA_WRITE = 0x00020000U,
/* buffer will be read by the HW camera pipeline */
GRALLOC_USAGE_HW_CAMERA_READ = 0x00040000U,
/* buffer will be used as part of zero-shutter-lag queue */
GRALLOC_USAGE_HW_CAMERA_ZSL = 0x00060000U,
/* mask for the camera access values */
GRALLOC_USAGE_HW_CAMERA_MASK = 0x00060000U,
/* mask for the software usage bit-mask */
GRALLOC_USAGE_HW_MASK = 0x00071F00U,
/* buffer will be used as a RenderScript Allocation */
GRALLOC_USAGE_RENDERSCRIPT = 0x00100000U,
/* Set by the consumer to indicate to the producer that they may attach a
* buffer that they did not detach from the BufferQueue. Will be filtered
* out by GRALLOC_USAGE_ALLOC_MASK, so gralloc modules will not need to
* handle this flag. */
GRALLOC_USAGE_FOREIGN_BUFFERS = 0x00200000U,
/* Mask of all flags which could be passed to a gralloc module for buffer
* allocation. Any flags not in this mask do not need to be handled by
* gralloc modules. */
GRALLOC_USAGE_ALLOC_MASK = ~(GRALLOC_USAGE_FOREIGN_BUFFERS),
/* implementation-specific private usage flags */
GRALLOC_USAGE_PRIVATE_0 = 0x10000000U,
GRALLOC_USAGE_PRIVATE_1 = 0x20000000U,
GRALLOC_USAGE_PRIVATE_2 = 0x40000000U,
GRALLOC_USAGE_PRIVATE_3 = 0x80000000U,
GRALLOC_USAGE_PRIVATE_MASK = 0xF0000000U,
};
/*****************************************************************************/
/**
* Every hardware module must have a data structure named HAL_MODULE_INFO_SYM
* and the fields of this data structure must begin with hw_module_t
* followed by module specific information.
*/
typedef struct gralloc_module_t {
struct hw_module_t common;
/*
* (*registerBuffer)() must be called before a buffer_handle_t that has not
* been created with (*alloc_device_t::alloc)() can be used.
*
* This is intended to be used with buffer_handle_t's that have been
* received in this process through IPC.
*
* This function checks that the handle is indeed a valid one and prepares
* it for use with (*lock)() and (*unlock)().
*
* It is not necessary to call (*registerBuffer)() on a handle created
* with (*alloc_device_t::alloc)().
*
* returns an error if this buffer_handle_t is not valid.
*/
int (*registerBuffer)(struct gralloc_module_t const* module,
buffer_handle_t handle);
/*
* (*unregisterBuffer)() is called once this handle is no longer needed in
* this process. After this call, it is an error to call (*lock)(),
* (*unlock)(), or (*registerBuffer)().
*
* This function doesn't close or free the handle itself; this is done
* by other means, usually through libcutils's native_handle_close() and
* native_handle_free().
*
* It is an error to call (*unregisterBuffer)() on a buffer that wasn't
* explicitly registered first.
*/
int (*unregisterBuffer)(struct gralloc_module_t const* module,
buffer_handle_t handle);
/*
* The (*lock)() method is called before a buffer is accessed for the
* specified usage. This call may block, for instance if the h/w needs
* to finish rendering or if CPU caches need to be synchronized.
*
* The caller promises to modify only pixels in the area specified
* by (l,t,w,h).
*
* The content of the buffer outside of the specified area is NOT modified
* by this call.
*
* If usage specifies GRALLOC_USAGE_SW_*, vaddr is filled with the address
* of the buffer in virtual memory.
*
* Note calling (*lock)() on HAL_PIXEL_FORMAT_YCbCr_*_888 buffers will fail
* and return -EINVAL. These buffers must be locked with (*lock_ycbcr)()
* instead.
*
* THREADING CONSIDERATIONS:
*
* It is legal for several different threads to lock a buffer from
* read access, none of the threads are blocked.
*
* However, locking a buffer simultaneously for write or read/write is
* undefined, but:
* - shall not result in termination of the process
* - shall not block the caller
* It is acceptable to return an error or to leave the buffer's content
* into an indeterminate state.
*
* If the buffer was created with a usage mask incompatible with the
* requested usage flags here, -EINVAL is returned.
*
*/
int (*lock)(struct gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h,
void** vaddr);
/*
* The (*unlock)() method must be called after all changes to the buffer
* are completed.
*/
int (*unlock)(struct gralloc_module_t const* module,
buffer_handle_t handle);
/* reserved for future use */
int (*perform)(struct gralloc_module_t const* module,
int operation, ... );
/*
* The (*lock_ycbcr)() method is like the (*lock)() method, with the
* difference that it fills a struct ycbcr with a description of the buffer
* layout, and zeroes out the reserved fields.
*
* If the buffer format is not compatible with a flexible YUV format (e.g.
* the buffer layout cannot be represented with the ycbcr struct), it
* will return -EINVAL.
*
* This method must work on buffers with HAL_PIXEL_FORMAT_YCbCr_*_888
* if supported by the device, as well as with any other format that is
* requested by the multimedia codecs when they are configured with a
* flexible-YUV-compatible color-format with android native buffers.
*
* Note that this method may also be called on buffers of other formats,
* including non-YUV formats.
*
* Added in GRALLOC_MODULE_API_VERSION_0_2.
*/
int (*lock_ycbcr)(struct gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h,
struct android_ycbcr *ycbcr);
/*
* The (*lockAsync)() method is like the (*lock)() method except
* that the buffer's sync fence object is passed into the lock
* call instead of requiring the caller to wait for completion.
*
* The gralloc implementation takes ownership of the fenceFd and
* is responsible for closing it when no longer needed.
*
* Added in GRALLOC_MODULE_API_VERSION_0_3.
*/
int (*lockAsync)(struct gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h,
void** vaddr, int fenceFd);
/*
* The (*unlockAsync)() method is like the (*unlock)() method
* except that a buffer sync fence object is returned from the
* lock call, representing the completion of any pending work
* performed by the gralloc implementation.
*
* The caller takes ownership of the fenceFd and is responsible
* for closing it when no longer needed.
*
* Added in GRALLOC_MODULE_API_VERSION_0_3.
*/
int (*unlockAsync)(struct gralloc_module_t const* module,
buffer_handle_t handle, int* fenceFd);
/*
* The (*lockAsync_ycbcr)() method is like the (*lock_ycbcr)()
* method except that the buffer's sync fence object is passed
* into the lock call instead of requiring the caller to wait for
* completion.
*
* The gralloc implementation takes ownership of the fenceFd and
* is responsible for closing it when no longer needed.
*
* Added in GRALLOC_MODULE_API_VERSION_0_3.
*/
int (*lockAsync_ycbcr)(struct gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h,
struct android_ycbcr *ycbcr, int fenceFd);
/* reserved for future use */
void* reserved_proc[3];
} gralloc_module_t;
/*****************************************************************************/
/**
* Every device data structure must begin with hw_device_t
* followed by module specific public methods and attributes.
*/
typedef struct alloc_device_t {
struct hw_device_t common;
/*
* (*alloc)() Allocates a buffer in graphic memory with the requested
* parameters and returns a buffer_handle_t and the stride in pixels to
* allow the implementation to satisfy hardware constraints on the width
* of a pixmap (eg: it may have to be multiple of 8 pixels).
* The CALLER TAKES OWNERSHIP of the buffer_handle_t.
*
* If format is HAL_PIXEL_FORMAT_YCbCr_420_888, the returned stride must be
* 0, since the actual strides are available from the android_ycbcr
* structure.
*
* Returns 0 on success or -errno on error.
*/
int (*alloc)(struct alloc_device_t* dev,
int w, int h, int format, int usage,
buffer_handle_t* handle, int* stride);
/*
* (*free)() Frees a previously allocated buffer.
* Behavior is undefined if the buffer is still mapped in any process,
* but shall not result in termination of the program or security breaches
* (allowing a process to get access to another process' buffers).
* THIS FUNCTION TAKES OWNERSHIP of the buffer_handle_t which becomes
* invalid after the call.
*
* Returns 0 on success or -errno on error.
*/
int (*free)(struct alloc_device_t* dev,
buffer_handle_t handle);
/* This hook is OPTIONAL.
*
* If non NULL it will be caused by SurfaceFlinger on dumpsys
*/
void (*dump)(struct alloc_device_t *dev, char *buff, int buff_len);
void* reserved_proc[7];
} alloc_device_t;
/** convenience API for opening and closing a supported device */
static inline int gralloc_open(const struct hw_module_t* module,
struct alloc_device_t** device) {
return module->methods->open(module,
GRALLOC_HARDWARE_GPU0, TO_HW_DEVICE_T_OPEN(device));
}
static inline int gralloc_close(struct alloc_device_t* device) {
return device->common.close(&device->common);
}
/**
* map_usage_to_memtrack should be called after allocating a gralloc buffer.
*
* @param usage - it is the flag used when alloc function is called.
*
* This function maps the gralloc usage flags to appropriate memtrack bucket.
* GrallocHAL implementers and users should make an additional ION_IOCTL_TAG
* call using the memtrack tag returned by this function. This will help the
* in-kernel memtack to categorize the memory allocated by different processes
* according to their usage.
*
*/
static inline const char* map_usage_to_memtrack(uint32_t usage) {
usage &= GRALLOC_USAGE_ALLOC_MASK;
if ((usage & GRALLOC_USAGE_HW_CAMERA_WRITE) != 0) {
return "camera";
} else if ((usage & GRALLOC_USAGE_HW_VIDEO_ENCODER) != 0 ||
(usage & GRALLOC_USAGE_EXTERNAL_DISP) != 0) {
return "video";
} else if ((usage & GRALLOC_USAGE_HW_RENDER) != 0 ||
(usage & GRALLOC_USAGE_HW_TEXTURE) != 0) {
return "gl";
} else if ((usage & GRALLOC_USAGE_HW_CAMERA_READ) != 0) {
return "camera";
} else if ((usage & GRALLOC_USAGE_SW_READ_MASK) != 0 ||
(usage & GRALLOC_USAGE_SW_WRITE_MASK) != 0) {
return "cpu";
}
return "graphics";
}
__END_DECLS
#endif // ANDROID_GRALLOC_INTERFACE_H

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_INCLUDE_HARDWARE_HARDWARE_H
#define ANDROID_INCLUDE_HARDWARE_HARDWARE_H
#include <stdint.h>
#include <sys/cdefs.h>
#include <cutils/native_handle.h>
#include <system/graphics.h>
__BEGIN_DECLS
/*
* Value for the hw_module_t.tag field
*/
#define MAKE_TAG_CONSTANT(A,B,C,D) (((A) << 24) | ((B) << 16) | ((C) << 8) | (D))
#define HARDWARE_MODULE_TAG MAKE_TAG_CONSTANT('H', 'W', 'M', 'T')
#define HARDWARE_DEVICE_TAG MAKE_TAG_CONSTANT('H', 'W', 'D', 'T')
#define HARDWARE_MAKE_API_VERSION(maj,min) \
((((maj) & 0xff) << 8) | ((min) & 0xff))
#define HARDWARE_MAKE_API_VERSION_2(maj,min,hdr) \
((((maj) & 0xff) << 24) | (((min) & 0xff) << 16) | ((hdr) & 0xffff))
#define HARDWARE_API_VERSION_2_MAJ_MIN_MASK 0xffff0000
#define HARDWARE_API_VERSION_2_HEADER_MASK 0x0000ffff
/*
* The current HAL API version.
*
* All module implementations must set the hw_module_t.hal_api_version field
* to this value when declaring the module with HAL_MODULE_INFO_SYM.
*
* Note that previous implementations have always set this field to 0.
* Therefore, libhardware HAL API will always consider versions 0.0 and 1.0
* to be 100% binary compatible.
*
*/
#define HARDWARE_HAL_API_VERSION HARDWARE_MAKE_API_VERSION(1, 0)
/*
* Helper macros for module implementors.
*
* The derived modules should provide convenience macros for supported
* versions so that implementations can explicitly specify module/device
* versions at definition time.
*
* Use this macro to set the hw_module_t.module_api_version field.
*/
#define HARDWARE_MODULE_API_VERSION(maj,min) HARDWARE_MAKE_API_VERSION(maj,min)
#define HARDWARE_MODULE_API_VERSION_2(maj,min,hdr) HARDWARE_MAKE_API_VERSION_2(maj,min,hdr)
/*
* Use this macro to set the hw_device_t.version field
*/
#define HARDWARE_DEVICE_API_VERSION(maj,min) HARDWARE_MAKE_API_VERSION(maj,min)
#define HARDWARE_DEVICE_API_VERSION_2(maj,min,hdr) HARDWARE_MAKE_API_VERSION_2(maj,min,hdr)
struct hw_module_t;
struct hw_module_methods_t;
struct hw_device_t;
/**
* Every hardware module must have a data structure named HAL_MODULE_INFO_SYM
* and the fields of this data structure must begin with hw_module_t
* followed by module specific information.
*/
typedef struct hw_module_t {
/** tag must be initialized to HARDWARE_MODULE_TAG */
uint32_t tag;
/**
* The API version of the implemented module. The module owner is
* responsible for updating the version when a module interface has
* changed.
*
* The derived modules such as gralloc and audio own and manage this field.
* The module user must interpret the version field to decide whether or
* not to inter-operate with the supplied module implementation.
* For example, SurfaceFlinger is responsible for making sure that
* it knows how to manage different versions of the gralloc-module API,
* and AudioFlinger must know how to do the same for audio-module API.
*
* The module API version should include a major and a minor component.
* For example, version 1.0 could be represented as 0x0100. This format
* implies that versions 0x0100-0x01ff are all API-compatible.
*
* In the future, libhardware will expose a hw_get_module_version()
* (or equivalent) function that will take minimum/maximum supported
* versions as arguments and would be able to reject modules with
* versions outside of the supplied range.
*/
uint16_t module_api_version;
#define version_major module_api_version
/**
* version_major/version_minor defines are supplied here for temporary
* source code compatibility. They will be removed in the next version.
* ALL clients must convert to the new version format.
*/
/**
* The API version of the HAL module interface. This is meant to
* version the hw_module_t, hw_module_methods_t, and hw_device_t
* structures and definitions.
*
* The HAL interface owns this field. Module users/implementations
* must NOT rely on this value for version information.
*
* Presently, 0 is the only valid value.
*/
uint16_t hal_api_version;
#define version_minor hal_api_version
/** Identifier of module */
const char *id;
/** Name of this module */
const char *name;
/** Author/owner/implementor of the module */
const char *author;
/** Modules methods */
struct hw_module_methods_t* methods;
/** module's dso */
void* dso;
#ifdef __LP64__
uint64_t reserved[32-7];
#else
/** padding to 128 bytes, reserved for future use */
uint32_t reserved[32-7];
#endif
} hw_module_t;
typedef struct hw_module_methods_t {
/** Open a specific device */
int (*open)(const struct hw_module_t* module, const char* id,
struct hw_device_t** device);
} hw_module_methods_t;
/**
* Every device data structure must begin with hw_device_t
* followed by module specific public methods and attributes.
*/
typedef struct hw_device_t {
/** tag must be initialized to HARDWARE_DEVICE_TAG */
uint32_t tag;
/**
* Version of the module-specific device API. This value is used by
* the derived-module user to manage different device implementations.
*
* The module user is responsible for checking the module_api_version
* and device version fields to ensure that the user is capable of
* communicating with the specific module implementation.
*
* One module can support multiple devices with different versions. This
* can be useful when a device interface changes in an incompatible way
* but it is still necessary to support older implementations at the same
* time. One such example is the Camera 2.0 API.
*
* This field is interpreted by the module user and is ignored by the
* HAL interface itself.
*/
uint32_t version;
/** reference to the module this device belongs to */
struct hw_module_t* module;
/** padding reserved for future use */
#ifdef __LP64__
uint64_t reserved[12];
#else
uint32_t reserved[12];
#endif
/** Close this device */
int (*close)(struct hw_device_t* device);
} hw_device_t;
#ifdef __cplusplus
#define TO_HW_DEVICE_T_OPEN(x) reinterpret_cast<struct hw_device_t**>(x)
#else
#define TO_HW_DEVICE_T_OPEN(x) (struct hw_device_t**)(x)
#endif
/**
* Name of the hal_module_info
*/
#define HAL_MODULE_INFO_SYM HMI
/**
* Name of the hal_module_info as a string
*/
#define HAL_MODULE_INFO_SYM_AS_STR "HMI"
/**
* Get the module info associated with a module by id.
*
* @return: 0 == success, <0 == error and *module == NULL
*/
int hw_get_module(const char *id, const struct hw_module_t **module);
/**
* Get the module info associated with a module instance by class 'class_id'
* and instance 'inst'.
*
* Some modules types necessitate multiple instances. For example audio supports
* multiple concurrent interfaces and thus 'audio' is the module class
* and 'primary' or 'a2dp' are module interfaces. This implies that the files
* providing these modules would be named audio.primary.<variant>.so and
* audio.a2dp.<variant>.so
*
* @return: 0 == success, <0 == error and *module == NULL
*/
int hw_get_module_by_class(const char *class_id, const char *inst,
const struct hw_module_t **module);
__END_DECLS
#endif /* ANDROID_INCLUDE_HARDWARE_HARDWARE_H */

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# SPDX-License-Identifier: CC0-1.0
android_includes = ([
include_directories('hardware/libhardware/include/'),
include_directories('metadata/'),
include_directories('system/core/include'),
])

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SYSTEM_MEDIA_PRIVATE_INCLUDE_CAMERA_METADATA_HIDDEN_H
#define SYSTEM_MEDIA_PRIVATE_INCLUDE_CAMERA_METADATA_HIDDEN_H
#include <system/camera_vendor_tags.h>
/**
* Error codes returned by vendor tags ops operations. These are intended
* to be used by all framework code that uses the return values from the
* vendor operations object.
*/
#define VENDOR_SECTION_NAME_ERR NULL
#define VENDOR_TAG_NAME_ERR NULL
#define VENDOR_TAG_COUNT_ERR (-1)
#define VENDOR_TAG_TYPE_ERR (-1)
#ifdef __cplusplus
extern "C" {
#endif
/** **These are private functions for use only by the camera framework.** **/
/**
* Set the global vendor tag operations object used to define vendor tag
* structure when parsing camera metadata with functions defined in
* system/media/camera/include/camera_metadata.h.
*/
ANDROID_API
int set_camera_metadata_vendor_ops(const vendor_tag_ops_t *query_ops);
/**
* Set the global vendor tag cache operations object used to define vendor tag
* structure when parsing camera metadata with functions defined in
* system/media/camera/include/camera_metadata.h.
*/
ANDROID_API
int set_camera_metadata_vendor_cache_ops(
const struct vendor_tag_cache_ops *query_cache_ops);
/**
* Set the vendor id for a particular metadata buffer.
*/
ANDROID_API
void set_camera_metadata_vendor_id(camera_metadata_t *meta,
metadata_vendor_id_t id);
/**
* Retrieve the vendor id for a particular metadata buffer.
*/
ANDROID_API
metadata_vendor_id_t get_camera_metadata_vendor_id(
const camera_metadata_t *meta);
/**
* Retrieve the type of a tag. Returns -1 if no such tag is defined.
*/
ANDROID_API
int get_local_camera_metadata_tag_type_vendor_id(uint32_t tag,
metadata_vendor_id_t id);
/**
* Retrieve the name of a tag. Returns NULL if no such tag is defined.
*/
ANDROID_API
const char *get_local_camera_metadata_tag_name_vendor_id(uint32_t tag,
metadata_vendor_id_t id);
/**
* Retrieve the name of a tag section. Returns NULL if no such tag is defined.
*/
ANDROID_API
const char *get_local_camera_metadata_section_name_vendor_id(uint32_t tag,
metadata_vendor_id_t id);
/**
* Retrieve the type of a tag. Returns -1 if no such tag is defined.
*/
ANDROID_API
int get_local_camera_metadata_tag_type_vendor_id(uint32_t tag,
metadata_vendor_id_t id);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SYSTEM_MEDIA_PRIVATE_INCLUDE_CAMERA_METADATA_HIDDEN_H */

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SYSTEM_MEDIA_INCLUDE_ANDROID_CAMERA_METADATA_H
#define SYSTEM_MEDIA_INCLUDE_ANDROID_CAMERA_METADATA_H
#include <string.h>
#include <stdint.h>
#include <cutils/compiler.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* Tag hierarchy and enum definitions for camera_metadata_entry
* =============================================================================
*/
/**
* Main enum definitions are in a separate file to make it easy to
* maintain
*/
#include "camera_metadata_tags.h"
/**
* Enum range for each top-level category
*/
ANDROID_API
extern unsigned int camera_metadata_section_bounds[ANDROID_SECTION_COUNT][2];
ANDROID_API
extern const char *camera_metadata_section_names[ANDROID_SECTION_COUNT];
/**
* Type definitions for camera_metadata_entry
* =============================================================================
*/
enum {
// Unsigned 8-bit integer (uint8_t)
TYPE_BYTE = 0,
// Signed 32-bit integer (int32_t)
TYPE_INT32 = 1,
// 32-bit float (float)
TYPE_FLOAT = 2,
// Signed 64-bit integer (int64_t)
TYPE_INT64 = 3,
// 64-bit float (double)
TYPE_DOUBLE = 4,
// A 64-bit fraction (camera_metadata_rational_t)
TYPE_RATIONAL = 5,
// Number of type fields
NUM_TYPES
};
typedef struct camera_metadata_rational {
int32_t numerator;
int32_t denominator;
} camera_metadata_rational_t;
/**
* A reference to a metadata entry in a buffer.
*
* The data union pointers point to the real data in the buffer, and can be
* modified in-place if the count does not need to change. The count is the
* number of entries in data of the entry's type, not a count of bytes.
*/
typedef struct camera_metadata_entry {
size_t index;
uint32_t tag;
uint8_t type;
size_t count;
union {
uint8_t *u8;
int32_t *i32;
float *f;
int64_t *i64;
double *d;
camera_metadata_rational_t *r;
} data;
} camera_metadata_entry_t;
/**
* A read-only reference to a metadata entry in a buffer. Identical to
* camera_metadata_entry in layout
*/
typedef struct camera_metadata_ro_entry {
size_t index;
uint32_t tag;
uint8_t type;
size_t count;
union {
const uint8_t *u8;
const int32_t *i32;
const float *f;
const int64_t *i64;
const double *d;
const camera_metadata_rational_t *r;
} data;
} camera_metadata_ro_entry_t;
/**
* Size in bytes of each entry type
*/
ANDROID_API
extern const size_t camera_metadata_type_size[NUM_TYPES];
/**
* Human-readable name of each entry type
*/
ANDROID_API
extern const char* camera_metadata_type_names[NUM_TYPES];
/**
* Main definitions for the metadata entry and array structures
* =============================================================================
*/
/**
* A packet of metadata. This is a list of metadata entries, each of which has
* an integer tag to identify its meaning, 'type' and 'count' field, and the
* data, which contains a 'count' number of entries of type 'type'. The packet
* has a fixed capacity for entries and for extra data. A new entry uses up one
* entry slot, and possibly some amount of data capacity; the function
* calculate_camera_metadata_entry_data_size() provides the amount of data
* capacity that would be used up by an entry.
*
* Entries are not sorted by default, and are not forced to be unique - multiple
* entries with the same tag are allowed. The packet will not dynamically resize
* when full.
*
* The packet is contiguous in memory, with size in bytes given by
* get_camera_metadata_size(). Therefore, it can be copied safely with memcpy()
* to a buffer of sufficient size. The copy_camera_metadata() function is
* intended for eliminating unused capacity in the destination packet.
*/
struct camera_metadata;
typedef struct camera_metadata camera_metadata_t;
/**
* Functions for manipulating camera metadata
* =============================================================================
*
* NOTE: Unless otherwise specified, functions that return type "int"
* return 0 on success, and non-0 value on error.
*/
/**
* Allocate a new camera_metadata structure, with some initial space for entries
* and extra data. The entry_capacity is measured in entry counts, and
* data_capacity in bytes. The resulting structure is all contiguous in memory,
* and can be freed with free_camera_metadata().
*/
ANDROID_API
camera_metadata_t *allocate_camera_metadata(size_t entry_capacity,
size_t data_capacity);
/**
* Get the required alignment of a packet of camera metadata, which is the
* maximal alignment of the embedded camera_metadata, camera_metadata_buffer_entry,
* and camera_metadata_data.
*/
ANDROID_API
size_t get_camera_metadata_alignment();
/**
* Allocate a new camera_metadata structure of size src_size. Copy the data,
* ignoring alignment, and then attempt validation. If validation
* fails, free the memory and return NULL. Otherwise return the pointer.
*
* The resulting pointer can be freed with free_camera_metadata().
*/
ANDROID_API
camera_metadata_t *allocate_copy_camera_metadata_checked(
const camera_metadata_t *src,
size_t src_size);
/**
* Place a camera metadata structure into an existing buffer. Returns NULL if
* the buffer is too small for the requested number of reserved entries and
* bytes of data. The entry_capacity is measured in entry counts, and
* data_capacity in bytes. If the buffer is larger than the required space,
* unused space will be left at the end. If successful, returns a pointer to the
* metadata header placed at the start of the buffer. It is the caller's
* responsibility to free the original buffer; do not call
* free_camera_metadata() with the returned pointer.
*/
ANDROID_API
camera_metadata_t *place_camera_metadata(void *dst, size_t dst_size,
size_t entry_capacity,
size_t data_capacity);
/**
* Free a camera_metadata structure. Should only be used with structures
* allocated with allocate_camera_metadata().
*/
ANDROID_API
void free_camera_metadata(camera_metadata_t *metadata);
/**
* Calculate the buffer size needed for a metadata structure of entry_count
* metadata entries, needing a total of data_count bytes of extra data storage.
*/
ANDROID_API
size_t calculate_camera_metadata_size(size_t entry_count,
size_t data_count);
/**
* Get current size of entire metadata structure in bytes, including reserved
* but unused space.
*/
ANDROID_API
size_t get_camera_metadata_size(const camera_metadata_t *metadata);
/**
* Get size of entire metadata buffer in bytes, not including reserved but
* unused space. This is the amount of space needed by copy_camera_metadata for
* its dst buffer.
*/
ANDROID_API
size_t get_camera_metadata_compact_size(const camera_metadata_t *metadata);
/**
* Get the current number of entries in the metadata packet.
*
* metadata packet must be valid, which can be checked before the call with
* validate_camera_metadata_structure().
*/
ANDROID_API
size_t get_camera_metadata_entry_count(const camera_metadata_t *metadata);
/**
* Get the maximum number of entries that could fit in the metadata packet.
*/
ANDROID_API
size_t get_camera_metadata_entry_capacity(const camera_metadata_t *metadata);
/**
* Get the current count of bytes used for value storage in the metadata packet.
*/
ANDROID_API
size_t get_camera_metadata_data_count(const camera_metadata_t *metadata);
/**
* Get the maximum count of bytes that could be used for value storage in the
* metadata packet.
*/
ANDROID_API
size_t get_camera_metadata_data_capacity(const camera_metadata_t *metadata);
/**
* Copy a metadata structure to a memory buffer, compacting it along the
* way. That is, in the copied structure, entry_count == entry_capacity, and
* data_count == data_capacity.
*
* If dst_size > get_camera_metadata_compact_size(), the unused bytes are at the
* end of the buffer. If dst_size < get_camera_metadata_compact_size(), returns
* NULL. Otherwise returns a pointer to the metadata structure header placed at
* the start of dst.
*
* Since the buffer was not allocated by allocate_camera_metadata, the caller is
* responsible for freeing the underlying buffer when needed; do not call
* free_camera_metadata.
*/
ANDROID_API
camera_metadata_t *copy_camera_metadata(void *dst, size_t dst_size,
const camera_metadata_t *src);
// Non-zero return values for validate_camera_metadata_structure
enum {
CAMERA_METADATA_VALIDATION_ERROR = 1,
CAMERA_METADATA_VALIDATION_SHIFTED = 2,
};
/**
* Validate that a metadata is structurally sane. That is, its internal
* state is such that we won't get buffer overflows or run into other
* 'impossible' issues when calling the other API functions.
*
* This is useful in particular after copying the binary metadata blob
* from an untrusted source, since passing this check means the data is at least
* consistent.
*
* The expected_size argument is optional.
*
* Returns 0: on success
* CAMERA_METADATA_VALIDATION_ERROR: on error
* CAMERA_METADATA_VALIDATION_SHIFTED: when the data is not properly aligned, but can be
* used as input of clone_camera_metadata and the returned metadata will be valid.
*
*/
ANDROID_API
int validate_camera_metadata_structure(const camera_metadata_t *metadata,
const size_t *expected_size);
/**
* Append camera metadata in src to an existing metadata structure in dst. This
* does not resize the destination structure, so if it is too small, a non-zero
* value is returned. On success, 0 is returned. Appending onto a sorted
* structure results in a non-sorted combined structure.
*/
ANDROID_API
int append_camera_metadata(camera_metadata_t *dst, const camera_metadata_t *src);
/**
* Clone an existing metadata buffer, compacting along the way. This is
* equivalent to allocating a new buffer of the minimum needed size, then
* appending the buffer to be cloned into the new buffer. The resulting buffer
* can be freed with free_camera_metadata(). Returns NULL if cloning failed.
*/
ANDROID_API
camera_metadata_t *clone_camera_metadata(const camera_metadata_t *src);
/**
* Calculate the number of bytes of extra data a given metadata entry will take
* up. That is, if entry of 'type' with a payload of 'data_count' values is
* added, how much will the value returned by get_camera_metadata_data_count()
* be increased? This value may be zero, if no extra data storage is needed.
*/
ANDROID_API
size_t calculate_camera_metadata_entry_data_size(uint8_t type,
size_t data_count);
/**
* Add a metadata entry to a metadata structure. Returns 0 if the addition
* succeeded. Returns a non-zero value if there is insufficient reserved space
* left to add the entry, or if the tag is unknown. data_count is the number of
* entries in the data array of the tag's type, not a count of
* bytes. Vendor-defined tags can not be added using this method, unless
* set_vendor_tag_query_ops() has been called first. Entries are always added to
* the end of the structure (highest index), so after addition, a
* previously-sorted array will be marked as unsorted.
*
* Returns 0 on success. A non-0 value is returned on error.
*/
ANDROID_API
int add_camera_metadata_entry(camera_metadata_t *dst,
uint32_t tag,
const void *data,
size_t data_count);
/**
* Sort the metadata buffer for fast searching. If already marked as sorted,
* does nothing. Adding or appending entries to the buffer will place the buffer
* back into an unsorted state.
*
* Returns 0 on success. A non-0 value is returned on error.
*/
ANDROID_API
int sort_camera_metadata(camera_metadata_t *dst);
/**
* Get metadata entry at position index in the metadata buffer.
* Index must be less than entry count, which is returned by
* get_camera_metadata_entry_count().
*
* src and index are inputs; the passed-in entry is updated with the details of
* the entry. The data pointer points to the real data in the buffer, and can be
* updated as long as the data count does not change.
*
* Returns 0 on success. A non-0 value is returned on error.
*/
ANDROID_API
int get_camera_metadata_entry(camera_metadata_t *src,
size_t index,
camera_metadata_entry_t *entry);
/**
* Get metadata entry at position index, but disallow editing the data.
*/
ANDROID_API
int get_camera_metadata_ro_entry(const camera_metadata_t *src,
size_t index,
camera_metadata_ro_entry_t *entry);
/**
* Find an entry with given tag value. If not found, returns -ENOENT. Otherwise,
* returns entry contents like get_camera_metadata_entry.
*
* If multiple entries with the same tag exist, does not have any guarantees on
* which is returned. To speed up searching for tags, sort the metadata
* structure first by calling sort_camera_metadata().
*/
ANDROID_API
int find_camera_metadata_entry(camera_metadata_t *src,
uint32_t tag,
camera_metadata_entry_t *entry);
/**
* Find an entry with given tag value, but disallow editing the data
*/
ANDROID_API
int find_camera_metadata_ro_entry(const camera_metadata_t *src,
uint32_t tag,
camera_metadata_ro_entry_t *entry);
/**
* Delete an entry at given index. This is an expensive operation, since it
* requires repacking entries and possibly entry data. This also invalidates any
* existing camera_metadata_entry.data pointers to this buffer. Sorting is
* maintained.
*/
ANDROID_API
int delete_camera_metadata_entry(camera_metadata_t *dst,
size_t index);
/**
* Updates a metadata entry with new data. If the data size is changing, may
* need to adjust the data array, making this an O(N) operation. If the data
* size is the same or still fits in the entry space, this is O(1). Maintains
* sorting, but invalidates camera_metadata_entry instances that point to the
* updated entry. If a non-NULL value is passed in to entry, the entry structure
* is updated to match the new buffer state. Returns a non-zero value if there
* is no room for the new data in the buffer.
*/
ANDROID_API
int update_camera_metadata_entry(camera_metadata_t *dst,
size_t index,
const void *data,
size_t data_count,
camera_metadata_entry_t *updated_entry);
/**
* Retrieve human-readable name of section the tag is in. Returns NULL if
* no such tag is defined. Returns NULL for tags in the vendor section, unless
* set_vendor_tag_query_ops() has been used.
*/
ANDROID_API
const char *get_camera_metadata_section_name(uint32_t tag);
/**
* Retrieve human-readable name of tag (not including section). Returns NULL if
* no such tag is defined. Returns NULL for tags in the vendor section, unless
* set_vendor_tag_query_ops() has been used.
*/
ANDROID_API
const char *get_camera_metadata_tag_name(uint32_t tag);
/**
* Retrieve the type of a tag. Returns -1 if no such tag is defined. Returns -1
* for tags in the vendor section, unless set_vendor_tag_query_ops() has been
* used.
*/
ANDROID_API
int get_camera_metadata_tag_type(uint32_t tag);
/**
* Retrieve human-readable name of section the tag is in. Returns NULL if
* no such tag is defined.
*/
ANDROID_API
const char *get_local_camera_metadata_section_name(uint32_t tag,
const camera_metadata_t *meta);
/**
* Retrieve human-readable name of tag (not including section). Returns NULL if
* no such tag is defined.
*/
ANDROID_API
const char *get_local_camera_metadata_tag_name(uint32_t tag,
const camera_metadata_t *meta);
/**
* Retrieve the type of a tag. Returns -1 if no such tag is defined.
*/
ANDROID_API
int get_local_camera_metadata_tag_type(uint32_t tag,
const camera_metadata_t *meta);
/**
* Set up vendor-specific tag query methods. These are needed to properly add
* entries with vendor-specified tags and to use the
* get_camera_metadata_section_name, _tag_name, and _tag_type methods with
* vendor tags. Returns 0 on success.
*
* **DEPRECATED** - Please use vendor_tag_ops defined in camera_vendor_tags.h
* instead.
*/
typedef struct vendor_tag_query_ops vendor_tag_query_ops_t;
struct vendor_tag_query_ops {
/**
* Get vendor section name for a vendor-specified entry tag. Only called for
* tags >= 0x80000000. The section name must start with the name of the
* vendor in the Java package style. For example, CameraZoom inc must prefix
* their sections with "com.camerazoom." Must return NULL if the tag is
* outside the bounds of vendor-defined sections.
*/
const char *(*get_camera_vendor_section_name)(
const vendor_tag_query_ops_t *v,
uint32_t tag);
/**
* Get tag name for a vendor-specified entry tag. Only called for tags >=
* 0x80000000. Must return NULL if the tag is outside the bounds of
* vendor-defined sections.
*/
const char *(*get_camera_vendor_tag_name)(
const vendor_tag_query_ops_t *v,
uint32_t tag);
/**
* Get tag type for a vendor-specified entry tag. Only called for tags >=
* 0x80000000. Must return -1 if the tag is outside the bounds of
* vendor-defined sections.
*/
int (*get_camera_vendor_tag_type)(
const vendor_tag_query_ops_t *v,
uint32_t tag);
/**
* Get the number of vendor tags supported on this platform. Used to
* calculate the size of buffer needed for holding the array of all tags
* returned by get_camera_vendor_tags().
*/
int (*get_camera_vendor_tag_count)(
const vendor_tag_query_ops_t *v);
/**
* Fill an array with all the supported vendor tags on this platform.
* get_camera_vendor_tag_count() returns the number of tags supported, and
* tag_array should be allocated with enough space to hold all of the tags.
*/
void (*get_camera_vendor_tags)(
const vendor_tag_query_ops_t *v,
uint32_t *tag_array);
};
/**
* **DEPRECATED** - This should only be used by the camera framework. Camera
* metadata will transition to using vendor_tag_ops defined in
* camera_vendor_tags.h instead.
*/
ANDROID_API
int set_camera_metadata_vendor_tag_ops(const vendor_tag_query_ops_t *query_ops);
/**
* Print fields in the metadata to the log.
* verbosity = 0: Only tag entry information
* verbosity = 1: Tag entry information plus at most 16 data values
* verbosity = 2: All information
*/
ANDROID_API
void dump_camera_metadata(const camera_metadata_t *metadata,
int fd,
int verbosity);
/**
* Print fields in the metadata to the log; adds indentation parameter, which
* specifies the number of spaces to insert before each line of the dump
*/
ANDROID_API
void dump_indented_camera_metadata(const camera_metadata_t *metadata,
int fd,
int verbosity,
int indentation);
/**
* Prints the specified tag value as a string. Only works for enum tags.
* Returns 0 on success, -1 on failure.
*/
ANDROID_API
int camera_metadata_enum_snprint(uint32_t tag,
uint32_t value,
char *dst,
size_t size);
#ifdef __cplusplus
}
#endif
#endif

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SYSTEM_MEDIA_INCLUDE_ANDROID_CAMERA_VENDOR_TAGS_H
#define SYSTEM_MEDIA_INCLUDE_ANDROID_CAMERA_VENDOR_TAGS_H
#ifdef __cplusplus
extern "C" {
#endif
#define CAMERA_METADATA_VENDOR_TAG_BOUNDARY 0x80000000u
#define CAMERA_METADATA_INVALID_VENDOR_ID UINT64_MAX
typedef uint64_t metadata_vendor_id_t;
/**
* Vendor tags:
*
* This structure contains basic functions for enumerating an immutable set of
* vendor-defined camera metadata tags, and querying static information about
* their structure/type. The intended use of this information is to validate
* the structure of metadata returned by the camera HAL, and to allow vendor-
* defined metadata tags to be visible in application facing camera API.
*/
typedef struct vendor_tag_ops vendor_tag_ops_t;
struct vendor_tag_ops {
/**
* Get the number of vendor tags supported on this platform. Used to
* calculate the size of buffer needed for holding the array of all tags
* returned by get_all_tags(). This must return -1 on error.
*/
int (*get_tag_count)(const vendor_tag_ops_t *v);
/**
* Fill an array with all of the supported vendor tags on this platform.
* get_tag_count() must return the number of tags supported, and
* tag_array will be allocated with enough space to hold the number of tags
* returned by get_tag_count().
*/
void (*get_all_tags)(const vendor_tag_ops_t *v, uint32_t *tag_array);
/**
* Get the vendor section name for a vendor-specified entry tag. This will
* only be called for vendor-defined tags.
*
* The naming convention for the vendor-specific section names should
* follow a style similar to the Java package style. For example,
* CameraZoom Inc. must prefix their sections with "com.camerazoom."
* This must return NULL if the tag is outside the bounds of
* vendor-defined sections.
*
* There may be different vendor-defined tag sections, for example the
* phone maker, the chipset maker, and the camera module maker may each
* have their own "com.vendor."-prefixed section.
*
* The memory pointed to by the return value must remain valid for the
* lifetime of the module, and is owned by the module.
*/
const char *(*get_section_name)(const vendor_tag_ops_t *v, uint32_t tag);
/**
* Get the tag name for a vendor-specified entry tag. This is only called
* for vendor-defined tags, and must return NULL if it is not a
* vendor-defined tag.
*
* The memory pointed to by the return value must remain valid for the
* lifetime of the module, and is owned by the module.
*/
const char *(*get_tag_name)(const vendor_tag_ops_t *v, uint32_t tag);
/**
* Get tag type for a vendor-specified entry tag. The type returned must be
* a valid type defined in camera_metadata.h. This method is only called
* for tags >= CAMERA_METADATA_VENDOR_TAG_BOUNDARY, and must return
* -1 if the tag is outside the bounds of the vendor-defined sections.
*/
int (*get_tag_type)(const vendor_tag_ops_t *v, uint32_t tag);
/* Reserved for future use. These must be initialized to NULL. */
void* reserved[8];
};
struct vendor_tag_cache_ops {
/**
* Get the number of vendor tags supported on this platform. Used to
* calculate the size of buffer needed for holding the array of all tags
* returned by get_all_tags(). This must return -1 on error.
*/
int (*get_tag_count)(metadata_vendor_id_t id);
/**
* Fill an array with all of the supported vendor tags on this platform.
* get_tag_count() must return the number of tags supported, and
* tag_array will be allocated with enough space to hold the number of tags
* returned by get_tag_count().
*/
void (*get_all_tags)(uint32_t *tag_array, metadata_vendor_id_t id);
/**
* Get the vendor section name for a vendor-specified entry tag. This will
* only be called for vendor-defined tags.
*
* The naming convention for the vendor-specific section names should
* follow a style similar to the Java package style. For example,
* CameraZoom Inc. must prefix their sections with "com.camerazoom."
* This must return NULL if the tag is outside the bounds of
* vendor-defined sections.
*
* There may be different vendor-defined tag sections, for example the
* phone maker, the chipset maker, and the camera module maker may each
* have their own "com.vendor."-prefixed section.
*
* The memory pointed to by the return value must remain valid for the
* lifetime of the module, and is owned by the module.
*/
const char *(*get_section_name)(uint32_t tag, metadata_vendor_id_t id);
/**
* Get the tag name for a vendor-specified entry tag. This is only called
* for vendor-defined tags, and must return NULL if it is not a
* vendor-defined tag.
*
* The memory pointed to by the return value must remain valid for the
* lifetime of the module, and is owned by the module.
*/
const char *(*get_tag_name)(uint32_t tag, metadata_vendor_id_t id);
/**
* Get tag type for a vendor-specified entry tag. The type returned must be
* a valid type defined in camera_metadata.h. This method is only called
* for tags >= CAMERA_METADATA_VENDOR_TAG_BOUNDARY, and must return
* -1 if the tag is outside the bounds of the vendor-defined sections.
*/
int (*get_tag_type)(uint32_t tag, metadata_vendor_id_t id);
/* Reserved for future use. These must be initialized to NULL. */
void* reserved[8];
};
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SYSTEM_MEDIA_INCLUDE_ANDROID_CAMERA_VENDOR_TAGS_H */

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _ANDROID_LOG_H
#define _ANDROID_LOG_H
/******************************************************************
*
* IMPORTANT NOTICE:
*
* This file is part of Android's set of stable system headers
* exposed by the Android NDK (Native Development Kit) since
* platform release 1.5
*
* Third-party source AND binary code relies on the definitions
* here to be FROZEN ON ALL UPCOMING PLATFORM RELEASES.
*
* - DO NOT MODIFY ENUMS (EXCEPT IF YOU ADD NEW 32-BIT VALUES)
* - DO NOT MODIFY CONSTANTS OR FUNCTIONAL MACROS
* - DO NOT CHANGE THE SIGNATURE OF FUNCTIONS IN ANY WAY
* - DO NOT CHANGE THE LAYOUT OR SIZE OF STRUCTURES
*/
/*
* Support routines to send messages to the Android in-kernel log buffer,
* which can later be accessed through the 'logcat' utility.
*
* Each log message must have
* - a priority
* - a log tag
* - some text
*
* The tag normally corresponds to the component that emits the log message,
* and should be reasonably small.
*
* Log message text may be truncated to less than an implementation-specific
* limit (e.g. 1023 characters max).
*
* Note that a newline character ("\n") will be appended automatically to your
* log message, if not already there. It is not possible to send several messages
* and have them appear on a single line in logcat.
*
* PLEASE USE LOGS WITH MODERATION:
*
* - Sending log messages eats CPU and slow down your application and the
* system.
*
* - The circular log buffer is pretty small (<64KB), sending many messages
* might push off other important log messages from the rest of the system.
*
* - In release builds, only send log messages to account for exceptional
* conditions.
*
* NOTE: These functions MUST be implemented by /system/lib/liblog.so
*/
#include <stdarg.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Android log priority values, in ascending priority order.
*/
typedef enum android_LogPriority {
ANDROID_LOG_UNKNOWN = 0,
ANDROID_LOG_DEFAULT, /* only for SetMinPriority() */
ANDROID_LOG_VERBOSE,
ANDROID_LOG_DEBUG,
ANDROID_LOG_INFO,
ANDROID_LOG_WARN,
ANDROID_LOG_ERROR,
ANDROID_LOG_FATAL,
ANDROID_LOG_SILENT, /* only for SetMinPriority(); must be last */
} android_LogPriority;
/*
* Send a simple string to the log.
*/
int __android_log_write(int prio, const char *tag, const char *text);
/*
* Send a formatted string to the log, used like printf(fmt,...)
*/
int __android_log_print(int prio, const char *tag, const char *fmt, ...)
#if defined(__GNUC__)
#ifdef __USE_MINGW_ANSI_STDIO
#if __USE_MINGW_ANSI_STDIO
__attribute__ ((format(gnu_printf, 3, 4)))
#else
__attribute__ ((format(printf, 3, 4)))
#endif
#else
__attribute__ ((format(printf, 3, 4)))
#endif
#endif
;
/*
* A variant of __android_log_print() that takes a va_list to list
* additional parameters.
*/
int __android_log_vprint(int prio, const char *tag,
const char *fmt, va_list ap);
/*
* Log an assertion failure and abort the process to have a chance
* to inspect it if a debugger is attached. This uses the FATAL priority.
*/
void __android_log_assert(const char *cond, const char *tag,
const char *fmt, ...)
#if defined(__GNUC__)
__attribute__ ((noreturn))
#ifdef __USE_MINGW_ANSI_STDIO
#if __USE_MINGW_ANSI_STDIO
__attribute__ ((format(gnu_printf, 3, 4)))
#else
__attribute__ ((format(printf, 3, 4)))
#endif
#else
__attribute__ ((format(printf, 3, 4)))
#endif
#endif
;
#ifdef __cplusplus
}
#endif
#endif /* _ANDROID_LOG_H */

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_CUTILS_COMPILER_H
#define ANDROID_CUTILS_COMPILER_H
/*
* helps the compiler's optimizer predicting branches
*/
#ifdef __cplusplus
# define CC_LIKELY( exp ) (__builtin_expect( !!(exp), true ))
# define CC_UNLIKELY( exp ) (__builtin_expect( !!(exp), false ))
#else
# define CC_LIKELY( exp ) (__builtin_expect( !!(exp), 1 ))
# define CC_UNLIKELY( exp ) (__builtin_expect( !!(exp), 0 ))
#endif
/**
* exports marked symbols
*
* if used on a C++ class declaration, this macro must be inserted
* after the "class" keyword. For instance:
*
* template <typename TYPE>
* class ANDROID_API Singleton { }
*/
#define ANDROID_API __attribute__((visibility("default")))
#endif // ANDROID_CUTILS_COMPILER_H

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef NATIVE_HANDLE_H_
#define NATIVE_HANDLE_H_
#include <stdalign.h>
#ifdef __cplusplus
extern "C" {
#endif
#define NATIVE_HANDLE_MAX_FDS 1024
#define NATIVE_HANDLE_MAX_INTS 1024
/* Declare a char array for use with native_handle_init */
#define NATIVE_HANDLE_DECLARE_STORAGE(name, maxFds, maxInts) \
alignas(native_handle_t) char (name)[ \
sizeof(native_handle_t) + sizeof(int) * ((maxFds) + (maxInts))]
typedef struct native_handle
{
int version; /* sizeof(native_handle_t) */
int numFds; /* number of file-descriptors at &data[0] */
int numInts; /* number of ints at &data[numFds] */
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wzero-length-array"
#endif
int data[0]; /* numFds + numInts ints */
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
} native_handle_t;
typedef const native_handle_t* buffer_handle_t;
/*
* native_handle_close
*
* closes the file descriptors contained in this native_handle_t
*
* return 0 on success, or a negative error code on failure
*
*/
int native_handle_close(const native_handle_t* h);
/*
* native_handle_init
*
* Initializes a native_handle_t from storage. storage must be declared with
* NATIVE_HANDLE_DECLARE_STORAGE. numFds and numInts must not respectively
* exceed maxFds and maxInts used to declare the storage.
*/
native_handle_t* native_handle_init(char* storage, int numFds, int numInts);
/*
* native_handle_create
*
* creates a native_handle_t and initializes it. must be destroyed with
* native_handle_delete().
*
*/
native_handle_t* native_handle_create(int numFds, int numInts);
/*
* native_handle_clone
*
* creates a native_handle_t and initializes it from another native_handle_t.
* Must be destroyed with native_handle_delete().
*
*/
native_handle_t* native_handle_clone(const native_handle_t* handle);
/*
* native_handle_delete
*
* frees a native_handle_t allocated with native_handle_create().
* This ONLY frees the memory allocated for the native_handle_t, but doesn't
* close the file descriptors; which can be achieved with native_handle_close().
*
* return 0 on success, or a negative error code on failure
*
*/
int native_handle_delete(native_handle_t* h);
#ifdef __cplusplus
}
#endif
#endif /* NATIVE_HANDLE_H_ */

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SYSTEM_CORE_INCLUDE_ANDROID_CAMERA_H
#define SYSTEM_CORE_INCLUDE_ANDROID_CAMERA_H
#include <stdint.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <cutils/native_handle.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
__BEGIN_DECLS
/**
* A set of bit masks for specifying how the received preview frames are
* handled before the previewCallback() call.
*
* The least significant 3 bits of an "int" value are used for this purpose:
*
* ..... 0 0 0
* ^ ^ ^
* | | |---------> determine whether the callback is enabled or not
* | |-----------> determine whether the callback is one-shot or not
* |-------------> determine whether the frame is copied out or not
*
* WARNING: When a frame is sent directly without copying, it is the frame
* receiver's responsiblity to make sure that the frame data won't get
* corrupted by subsequent preview frames filled by the camera. This flag is
* recommended only when copying out data brings significant performance price
* and the handling/processing of the received frame data is always faster than
* the preview frame rate so that data corruption won't occur.
*
* For instance,
* 1. 0x00 disables the callback. In this case, copy out and one shot bits
* are ignored.
* 2. 0x01 enables a callback without copying out the received frames. A
* typical use case is the Camcorder application to avoid making costly
* frame copies.
* 3. 0x05 is enabling a callback with frame copied out repeatedly. A typical
* use case is the Camera application.
* 4. 0x07 is enabling a callback with frame copied out only once. A typical
* use case is the Barcode scanner application.
*/
enum {
CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK = 0x01,
CAMERA_FRAME_CALLBACK_FLAG_ONE_SHOT_MASK = 0x02,
CAMERA_FRAME_CALLBACK_FLAG_COPY_OUT_MASK = 0x04,
/** Typical use cases */
CAMERA_FRAME_CALLBACK_FLAG_NOOP = 0x00,
CAMERA_FRAME_CALLBACK_FLAG_CAMCORDER = 0x01,
CAMERA_FRAME_CALLBACK_FLAG_CAMERA = 0x05,
CAMERA_FRAME_CALLBACK_FLAG_BARCODE_SCANNER = 0x07
};
/** msgType in notifyCallback and dataCallback functions */
enum {
CAMERA_MSG_ERROR = 0x0001, // notifyCallback
CAMERA_MSG_SHUTTER = 0x0002, // notifyCallback
CAMERA_MSG_FOCUS = 0x0004, // notifyCallback
CAMERA_MSG_ZOOM = 0x0008, // notifyCallback
CAMERA_MSG_PREVIEW_FRAME = 0x0010, // dataCallback
CAMERA_MSG_VIDEO_FRAME = 0x0020, // data_timestamp_callback
CAMERA_MSG_POSTVIEW_FRAME = 0x0040, // dataCallback
CAMERA_MSG_RAW_IMAGE = 0x0080, // dataCallback
CAMERA_MSG_COMPRESSED_IMAGE = 0x0100, // dataCallback
CAMERA_MSG_RAW_IMAGE_NOTIFY = 0x0200, // dataCallback
// Preview frame metadata. This can be combined with
// CAMERA_MSG_PREVIEW_FRAME in dataCallback. For example, the apps can
// request FRAME and METADATA. Or the apps can request only FRAME or only
// METADATA.
CAMERA_MSG_PREVIEW_METADATA = 0x0400, // dataCallback
// Notify on autofocus start and stop. This is useful in continuous
// autofocus - FOCUS_MODE_CONTINUOUS_VIDEO and FOCUS_MODE_CONTINUOUS_PICTURE.
CAMERA_MSG_FOCUS_MOVE = 0x0800, // notifyCallback
CAMERA_MSG_ALL_MSGS = 0xFFFF
};
/** cmdType in sendCommand functions */
enum {
CAMERA_CMD_START_SMOOTH_ZOOM = 1,
CAMERA_CMD_STOP_SMOOTH_ZOOM = 2,
/**
* Set the clockwise rotation of preview display (setPreviewDisplay) in
* degrees. This affects the preview frames and the picture displayed after
* snapshot. This method is useful for portrait mode applications. Note
* that preview display of front-facing cameras is flipped horizontally
* before the rotation, that is, the image is reflected along the central
* vertical axis of the camera sensor. So the users can see themselves as
* looking into a mirror.
*
* This does not affect the order of byte array of
* CAMERA_MSG_PREVIEW_FRAME, CAMERA_MSG_VIDEO_FRAME,
* CAMERA_MSG_POSTVIEW_FRAME, CAMERA_MSG_RAW_IMAGE, or
* CAMERA_MSG_COMPRESSED_IMAGE. This is allowed to be set during preview
* since API level 14.
*/
CAMERA_CMD_SET_DISPLAY_ORIENTATION = 3,
/**
* cmdType to disable/enable shutter sound. In sendCommand passing arg1 =
* 0 will disable, while passing arg1 = 1 will enable the shutter sound.
*/
CAMERA_CMD_ENABLE_SHUTTER_SOUND = 4,
/* cmdType to play recording sound */
CAMERA_CMD_PLAY_RECORDING_SOUND = 5,
/**
* Start the face detection. This should be called after preview is started.
* The camera will notify the listener of CAMERA_MSG_FACE and the detected
* faces in the preview frame. The detected faces may be the same as the
* previous ones. Apps should call CAMERA_CMD_STOP_FACE_DETECTION to stop
* the face detection. This method is supported if CameraParameters
* KEY_MAX_NUM_HW_DETECTED_FACES or KEY_MAX_NUM_SW_DETECTED_FACES is
* bigger than 0. Hardware and software face detection should not be running
* at the same time. If the face detection has started, apps should not send
* this again.
*
* In hardware face detection mode, CameraParameters KEY_WHITE_BALANCE,
* KEY_FOCUS_AREAS and KEY_METERING_AREAS have no effect.
*
* arg1 is the face detection type. It can be CAMERA_FACE_DETECTION_HW or
* CAMERA_FACE_DETECTION_SW. If the type of face detection requested is not
* supported, the HAL must return BAD_VALUE.
*/
CAMERA_CMD_START_FACE_DETECTION = 6,
/**
* Stop the face detection.
*/
CAMERA_CMD_STOP_FACE_DETECTION = 7,
/**
* Enable/disable focus move callback (CAMERA_MSG_FOCUS_MOVE). Passing
* arg1 = 0 will disable, while passing arg1 = 1 will enable the callback.
*/
CAMERA_CMD_ENABLE_FOCUS_MOVE_MSG = 8,
/**
* Ping camera service to see if camera hardware is released.
*
* When any camera method returns error, the client can use ping command
* to see if the camera has been taken away by other clients. If the result
* is NO_ERROR, it means the camera hardware is not released. If the result
* is not NO_ERROR, the camera has been released and the existing client
* can silently finish itself or show a dialog.
*/
CAMERA_CMD_PING = 9,
/**
* Configure the number of video buffers used for recording. The intended
* video buffer count for recording is passed as arg1, which must be
* greater than 0. This command must be sent before recording is started.
* This command returns INVALID_OPERATION error if it is sent after video
* recording is started, or the command is not supported at all. This
* command also returns a BAD_VALUE error if the intended video buffer
* count is non-positive or too big to be realized.
*/
CAMERA_CMD_SET_VIDEO_BUFFER_COUNT = 10,
/**
* Configure an explicit format to use for video recording metadata mode.
* This can be used to switch the format from the
* default IMPLEMENTATION_DEFINED gralloc format to some other
* device-supported format, and the default dataspace from the BT_709 color
* space to some other device-supported dataspace. arg1 is the HAL pixel
* format, and arg2 is the HAL dataSpace. This command returns
* INVALID_OPERATION error if it is sent after video recording is started,
* or the command is not supported at all.
*
* If the gralloc format is set to a format other than
* IMPLEMENTATION_DEFINED, then HALv3 devices will use gralloc usage flags
* of SW_READ_OFTEN.
*/
CAMERA_CMD_SET_VIDEO_FORMAT = 11
};
/** camera fatal errors */
enum {
CAMERA_ERROR_UNKNOWN = 1,
/**
* Camera was released because another client has connected to the camera.
* The original client should call Camera::disconnect immediately after
* getting this notification. Otherwise, the camera will be released by
* camera service in a short time. The client should not call any method
* (except disconnect and sending CAMERA_CMD_PING) after getting this.
*/
CAMERA_ERROR_RELEASED = 2,
/**
* Camera was released because device policy change or the client application
* is going to background. The client should call Camera::disconnect
* immediately after getting this notification. Otherwise, the camera will be
* released by camera service in a short time. The client should not call any
* method (except disconnect and sending CAMERA_CMD_PING) after getting this.
*/
CAMERA_ERROR_DISABLED = 3,
CAMERA_ERROR_SERVER_DIED = 100
};
enum {
/** The facing of the camera is opposite to that of the screen. */
CAMERA_FACING_BACK = 0,
/** The facing of the camera is the same as that of the screen. */
CAMERA_FACING_FRONT = 1,
/**
* The facing of the camera is not fixed relative to the screen.
* The cameras with this facing are external cameras, e.g. USB cameras.
*/
CAMERA_FACING_EXTERNAL = 2
};
enum {
/** Hardware face detection. It does not use much CPU. */
CAMERA_FACE_DETECTION_HW = 0,
/**
* Software face detection. It uses some CPU. Applications must use
* Camera.setPreviewTexture for preview in this mode.
*/
CAMERA_FACE_DETECTION_SW = 1
};
/**
* The information of a face from camera face detection.
*/
typedef struct camera_face {
/**
* Bounds of the face [left, top, right, bottom]. (-1000, -1000) represents
* the top-left of the camera field of view, and (1000, 1000) represents the
* bottom-right of the field of view. The width and height cannot be 0 or
* negative. This is supported by both hardware and software face detection.
*
* The direction is relative to the sensor orientation, that is, what the
* sensor sees. The direction is not affected by the rotation or mirroring
* of CAMERA_CMD_SET_DISPLAY_ORIENTATION.
*/
int32_t rect[4];
/**
* The confidence level of the face. The range is 1 to 100. 100 is the
* highest confidence. This is supported by both hardware and software
* face detection.
*/
int32_t score;
/**
* An unique id per face while the face is visible to the tracker. If
* the face leaves the field-of-view and comes back, it will get a new
* id. If the value is 0, id is not supported.
*/
int32_t id;
/**
* The coordinates of the center of the left eye. The range is -1000 to
* 1000. -2000, -2000 if this is not supported.
*/
int32_t left_eye[2];
/**
* The coordinates of the center of the right eye. The range is -1000 to
* 1000. -2000, -2000 if this is not supported.
*/
int32_t right_eye[2];
/**
* The coordinates of the center of the mouth. The range is -1000 to 1000.
* -2000, -2000 if this is not supported.
*/
int32_t mouth[2];
} camera_face_t;
/**
* The metadata of the frame data.
*/
typedef struct camera_frame_metadata {
/**
* The number of detected faces in the frame.
*/
int32_t number_of_faces;
/**
* An array of the detected faces. The length is number_of_faces.
*/
camera_face_t *faces;
} camera_frame_metadata_t;
__END_DECLS
#endif /* SYSTEM_CORE_INCLUDE_ANDROID_CAMERA_H */

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/* SPDX-License-Identifier: Apache-2.0 */
// This file is autogenerated by hidl-gen. Do not edit manually.
// Source: android.hardware.graphics.common@1.0
// Location: hardware/interfaces/graphics/common/1.0/
#ifndef HIDL_GENERATED_ANDROID_HARDWARE_GRAPHICS_COMMON_V1_0_EXPORTED_CONSTANTS_H_
#define HIDL_GENERATED_ANDROID_HARDWARE_GRAPHICS_COMMON_V1_0_EXPORTED_CONSTANTS_H_
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
HAL_PIXEL_FORMAT_RGBA_8888 = 1,
HAL_PIXEL_FORMAT_RGBX_8888 = 2,
HAL_PIXEL_FORMAT_RGB_888 = 3,
HAL_PIXEL_FORMAT_RGB_565 = 4,
HAL_PIXEL_FORMAT_BGRA_8888 = 5,
HAL_PIXEL_FORMAT_YCBCR_422_SP = 16,
HAL_PIXEL_FORMAT_YCRCB_420_SP = 17,
HAL_PIXEL_FORMAT_YCBCR_422_I = 20,
HAL_PIXEL_FORMAT_RGBA_FP16 = 22,
HAL_PIXEL_FORMAT_RAW16 = 32,
HAL_PIXEL_FORMAT_BLOB = 33,
HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED = 34,
HAL_PIXEL_FORMAT_YCBCR_420_888 = 35,
HAL_PIXEL_FORMAT_RAW_OPAQUE = 36,
HAL_PIXEL_FORMAT_RAW10 = 37,
HAL_PIXEL_FORMAT_RAW12 = 38,
HAL_PIXEL_FORMAT_RGBA_1010102 = 43,
HAL_PIXEL_FORMAT_Y8 = 538982489,
HAL_PIXEL_FORMAT_Y16 = 540422489,
HAL_PIXEL_FORMAT_YV12 = 842094169,
} android_pixel_format_t;
typedef enum {
HAL_TRANSFORM_FLIP_H = 1, // (1 << 0)
HAL_TRANSFORM_FLIP_V = 2, // (1 << 1)
HAL_TRANSFORM_ROT_90 = 4, // (1 << 2)
HAL_TRANSFORM_ROT_180 = 3, // (FLIP_H | FLIP_V)
HAL_TRANSFORM_ROT_270 = 7, // ((FLIP_H | FLIP_V) | ROT_90)
} android_transform_t;
typedef enum {
HAL_DATASPACE_UNKNOWN = 0,
HAL_DATASPACE_ARBITRARY = 1,
HAL_DATASPACE_STANDARD_SHIFT = 16,
HAL_DATASPACE_STANDARD_MASK = 4128768, // (63 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_UNSPECIFIED = 0, // (0 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_BT709 = 65536, // (1 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_BT601_625 = 131072, // (2 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_BT601_625_UNADJUSTED = 196608, // (3 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_BT601_525 = 262144, // (4 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_BT601_525_UNADJUSTED = 327680, // (5 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_BT2020 = 393216, // (6 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_BT2020_CONSTANT_LUMINANCE = 458752, // (7 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_BT470M = 524288, // (8 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_FILM = 589824, // (9 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_DCI_P3 = 655360, // (10 << STANDARD_SHIFT)
HAL_DATASPACE_STANDARD_ADOBE_RGB = 720896, // (11 << STANDARD_SHIFT)
HAL_DATASPACE_TRANSFER_SHIFT = 22,
HAL_DATASPACE_TRANSFER_MASK = 130023424, // (31 << TRANSFER_SHIFT)
HAL_DATASPACE_TRANSFER_UNSPECIFIED = 0, // (0 << TRANSFER_SHIFT)
HAL_DATASPACE_TRANSFER_LINEAR = 4194304, // (1 << TRANSFER_SHIFT)
HAL_DATASPACE_TRANSFER_SRGB = 8388608, // (2 << TRANSFER_SHIFT)
HAL_DATASPACE_TRANSFER_SMPTE_170M = 12582912, // (3 << TRANSFER_SHIFT)
HAL_DATASPACE_TRANSFER_GAMMA2_2 = 16777216, // (4 << TRANSFER_SHIFT)
HAL_DATASPACE_TRANSFER_GAMMA2_6 = 20971520, // (5 << TRANSFER_SHIFT)
HAL_DATASPACE_TRANSFER_GAMMA2_8 = 25165824, // (6 << TRANSFER_SHIFT)
HAL_DATASPACE_TRANSFER_ST2084 = 29360128, // (7 << TRANSFER_SHIFT)
HAL_DATASPACE_TRANSFER_HLG = 33554432, // (8 << TRANSFER_SHIFT)
HAL_DATASPACE_RANGE_SHIFT = 27,
HAL_DATASPACE_RANGE_MASK = 939524096, // (7 << RANGE_SHIFT)
HAL_DATASPACE_RANGE_UNSPECIFIED = 0, // (0 << RANGE_SHIFT)
HAL_DATASPACE_RANGE_FULL = 134217728, // (1 << RANGE_SHIFT)
HAL_DATASPACE_RANGE_LIMITED = 268435456, // (2 << RANGE_SHIFT)
HAL_DATASPACE_RANGE_EXTENDED = 402653184, // (3 << RANGE_SHIFT)
HAL_DATASPACE_SRGB_LINEAR = 512,
HAL_DATASPACE_V0_SRGB_LINEAR = 138477568, // ((STANDARD_BT709 | TRANSFER_LINEAR) | RANGE_FULL)
HAL_DATASPACE_V0_SCRGB_LINEAR =
406913024, // ((STANDARD_BT709 | TRANSFER_LINEAR) | RANGE_EXTENDED)
HAL_DATASPACE_SRGB = 513,
HAL_DATASPACE_V0_SRGB = 142671872, // ((STANDARD_BT709 | TRANSFER_SRGB) | RANGE_FULL)
HAL_DATASPACE_V0_SCRGB = 411107328, // ((STANDARD_BT709 | TRANSFER_SRGB) | RANGE_EXTENDED)
HAL_DATASPACE_JFIF = 257,
HAL_DATASPACE_V0_JFIF = 146931712, // ((STANDARD_BT601_625 | TRANSFER_SMPTE_170M) | RANGE_FULL)
HAL_DATASPACE_BT601_625 = 258,
HAL_DATASPACE_V0_BT601_625 =
281149440, // ((STANDARD_BT601_625 | TRANSFER_SMPTE_170M) | RANGE_LIMITED)
HAL_DATASPACE_BT601_525 = 259,
HAL_DATASPACE_V0_BT601_525 =
281280512, // ((STANDARD_BT601_525 | TRANSFER_SMPTE_170M) | RANGE_LIMITED)
HAL_DATASPACE_BT709 = 260,
HAL_DATASPACE_V0_BT709 = 281083904, // ((STANDARD_BT709 | TRANSFER_SMPTE_170M) | RANGE_LIMITED)
HAL_DATASPACE_DCI_P3_LINEAR = 139067392, // ((STANDARD_DCI_P3 | TRANSFER_LINEAR) | RANGE_FULL)
HAL_DATASPACE_DCI_P3 = 155844608, // ((STANDARD_DCI_P3 | TRANSFER_GAMMA2_6) | RANGE_FULL)
HAL_DATASPACE_DISPLAY_P3_LINEAR =
139067392, // ((STANDARD_DCI_P3 | TRANSFER_LINEAR) | RANGE_FULL)
HAL_DATASPACE_DISPLAY_P3 = 143261696, // ((STANDARD_DCI_P3 | TRANSFER_SRGB) | RANGE_FULL)
HAL_DATASPACE_ADOBE_RGB = 151715840, // ((STANDARD_ADOBE_RGB | TRANSFER_GAMMA2_2) | RANGE_FULL)
HAL_DATASPACE_BT2020_LINEAR = 138805248, // ((STANDARD_BT2020 | TRANSFER_LINEAR) | RANGE_FULL)
HAL_DATASPACE_BT2020 = 147193856, // ((STANDARD_BT2020 | TRANSFER_SMPTE_170M) | RANGE_FULL)
HAL_DATASPACE_BT2020_PQ = 163971072, // ((STANDARD_BT2020 | TRANSFER_ST2084) | RANGE_FULL)
HAL_DATASPACE_DEPTH = 4096,
HAL_DATASPACE_SENSOR = 4097,
} android_dataspace_t;
typedef enum {
HAL_COLOR_MODE_NATIVE = 0,
HAL_COLOR_MODE_STANDARD_BT601_625 = 1,
HAL_COLOR_MODE_STANDARD_BT601_625_UNADJUSTED = 2,
HAL_COLOR_MODE_STANDARD_BT601_525 = 3,
HAL_COLOR_MODE_STANDARD_BT601_525_UNADJUSTED = 4,
HAL_COLOR_MODE_STANDARD_BT709 = 5,
HAL_COLOR_MODE_DCI_P3 = 6,
HAL_COLOR_MODE_SRGB = 7,
HAL_COLOR_MODE_ADOBE_RGB = 8,
HAL_COLOR_MODE_DISPLAY_P3 = 9,
} android_color_mode_t;
typedef enum {
HAL_COLOR_TRANSFORM_IDENTITY = 0,
HAL_COLOR_TRANSFORM_ARBITRARY_MATRIX = 1,
HAL_COLOR_TRANSFORM_VALUE_INVERSE = 2,
HAL_COLOR_TRANSFORM_GRAYSCALE = 3,
HAL_COLOR_TRANSFORM_CORRECT_PROTANOPIA = 4,
HAL_COLOR_TRANSFORM_CORRECT_DEUTERANOPIA = 5,
HAL_COLOR_TRANSFORM_CORRECT_TRITANOPIA = 6,
} android_color_transform_t;
typedef enum {
HAL_HDR_DOLBY_VISION = 1,
HAL_HDR_HDR10 = 2,
HAL_HDR_HLG = 3,
} android_hdr_t;
#ifdef __cplusplus
}
#endif
#endif // HIDL_GENERATED_ANDROID_HARDWARE_GRAPHICS_COMMON_V1_0_EXPORTED_CONSTANTS_H_

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/* SPDX-License-Identifier: Apache-2.0 */
// This file is autogenerated by hidl-gen. Do not edit manually.
// Source: android.hardware.graphics.common@1.1
// Location: hardware/interfaces/graphics/common/1.1/
#ifndef HIDL_GENERATED_ANDROID_HARDWARE_GRAPHICS_COMMON_V1_1_EXPORTED_CONSTANTS_H_
#define HIDL_GENERATED_ANDROID_HARDWARE_GRAPHICS_COMMON_V1_1_EXPORTED_CONSTANTS_H_
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
HAL_PIXEL_FORMAT_DEPTH_16 = 48,
HAL_PIXEL_FORMAT_DEPTH_24 = 49,
HAL_PIXEL_FORMAT_DEPTH_24_STENCIL_8 = 50,
HAL_PIXEL_FORMAT_DEPTH_32F = 51,
HAL_PIXEL_FORMAT_DEPTH_32F_STENCIL_8 = 52,
HAL_PIXEL_FORMAT_STENCIL_8 = 53,
HAL_PIXEL_FORMAT_YCBCR_P010 = 54,
} android_pixel_format_v1_1_t;
typedef enum {
HAL_DATASPACE_BT2020_ITU =
281411584, // ((STANDARD_BT2020 | TRANSFER_SMPTE_170M) | RANGE_LIMITED)
HAL_DATASPACE_BT2020_ITU_PQ =
298188800, // ((STANDARD_BT2020 | TRANSFER_ST2084) | RANGE_LIMITED)
HAL_DATASPACE_BT2020_ITU_HLG = 302383104, // ((STANDARD_BT2020 | TRANSFER_HLG) | RANGE_LIMITED)
HAL_DATASPACE_BT2020_HLG = 168165376, // ((STANDARD_BT2020 | TRANSFER_HLG) | RANGE_FULL)
} android_dataspace_v1_1_t;
typedef enum {
HAL_COLOR_MODE_BT2020 = 10,
HAL_COLOR_MODE_BT2100_PQ = 11,
HAL_COLOR_MODE_BT2100_HLG = 12,
} android_color_mode_v1_1_t;
typedef enum {
HAL_RENDER_INTENT_COLORIMETRIC = 0,
HAL_RENDER_INTENT_ENHANCE = 1,
HAL_RENDER_INTENT_TONE_MAP_COLORIMETRIC = 2,
HAL_RENDER_INTENT_TONE_MAP_ENHANCE = 3,
} android_render_intent_v1_1_t;
#ifdef __cplusplus
}
#endif
#endif // HIDL_GENERATED_ANDROID_HARDWARE_GRAPHICS_COMMON_V1_1_EXPORTED_CONSTANTS_H_

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/* SPDX-License-Identifier: Apache-2.0 */
#ifndef SYSTEM_CORE_GRAPHICS_BASE_H_
#define SYSTEM_CORE_GRAPHICS_BASE_H_
#include "graphics-base-v1.0.h"
#include "graphics-base-v1.1.h"
#endif // SYSTEM_CORE_GRAPHICS_BASE_H_

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/* SPDX-License-Identifier: Apache-2.0 */
#ifndef SYSTEM_CORE_GRAPHICS_SW_H_
#define SYSTEM_CORE_GRAPHICS_SW_H_
/* Software formats not in the HAL definitions. */
typedef enum {
HAL_PIXEL_FORMAT_YCBCR_422_888 = 39, // 0x27
HAL_PIXEL_FORMAT_YCBCR_444_888 = 40, // 0x28
HAL_PIXEL_FORMAT_FLEX_RGB_888 = 41, // 0x29
HAL_PIXEL_FORMAT_FLEX_RGBA_8888 = 42, // 0x2A
} android_pixel_format_sw_t;
/* for compatibility */
#define HAL_PIXEL_FORMAT_YCbCr_422_888 HAL_PIXEL_FORMAT_YCBCR_422_888
#define HAL_PIXEL_FORMAT_YCbCr_444_888 HAL_PIXEL_FORMAT_YCBCR_444_888
#endif // SYSTEM_CORE_GRAPHICS_SW_H_

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/* SPDX-License-Identifier: Apache-2.0 */
/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H
#define SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H
#include <stddef.h>
#include <stdint.h>
/*
* Some of the enums are now defined in HIDL in hardware/interfaces and are
* generated.
*/
#include "graphics-base.h"
#include "graphics-sw.h"
#ifdef __cplusplus
extern "C" {
#endif
/* for compatibility */
#define HAL_PIXEL_FORMAT_YCbCr_420_888 HAL_PIXEL_FORMAT_YCBCR_420_888
#define HAL_PIXEL_FORMAT_YCbCr_422_SP HAL_PIXEL_FORMAT_YCBCR_422_SP
#define HAL_PIXEL_FORMAT_YCrCb_420_SP HAL_PIXEL_FORMAT_YCRCB_420_SP
#define HAL_PIXEL_FORMAT_YCbCr_422_I HAL_PIXEL_FORMAT_YCBCR_422_I
typedef android_pixel_format_t android_pixel_format;
typedef android_transform_t android_transform;
typedef android_dataspace_t android_dataspace;
typedef android_color_mode_t android_color_mode;
typedef android_color_transform_t android_color_transform;
typedef android_hdr_t android_hdr;
/*
* If the HAL needs to create service threads to handle graphics related
* tasks, these threads need to run at HAL_PRIORITY_URGENT_DISPLAY priority
* if they can block the main rendering thread in any way.
*
* the priority of the current thread can be set with:
*
* #include <sys/resource.h>
* setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);
*
*/
#define HAL_PRIORITY_URGENT_DISPLAY (-8)
/*
* Structure for describing YCbCr formats for consumption by applications.
* This is used with HAL_PIXEL_FORMAT_YCbCr_*_888.
*
* Buffer chroma subsampling is defined in the format.
* e.g. HAL_PIXEL_FORMAT_YCbCr_420_888 has subsampling 4:2:0.
*
* Buffers must have a 8 bit depth.
*
* y, cb, and cr point to the first byte of their respective planes.
*
* Stride describes the distance in bytes from the first value of one row of
* the image to the first value of the next row. It includes the width of the
* image plus padding.
* ystride is the stride of the luma plane.
* cstride is the stride of the chroma planes.
*
* chroma_step is the distance in bytes from one chroma pixel value to the
* next. This is 2 bytes for semiplanar (because chroma values are interleaved
* and each chroma value is one byte) and 1 for planar.
*/
struct android_ycbcr {
void *y;
void *cb;
void *cr;
size_t ystride;
size_t cstride;
size_t chroma_step;
/** reserved for future use, set to 0 by gralloc's (*lock_ycbcr)() */
uint32_t reserved[8];
};
/*
* Structures for describing flexible YUVA/RGBA formats for consumption by
* applications. Such flexible formats contain a plane for each component (e.g.
* red, green, blue), where each plane is laid out in a grid-like pattern
* occupying unique byte addresses and with consistent byte offsets between
* neighboring pixels.
*
* The android_flex_layout structure is used with any pixel format that can be
* represented by it, such as:
* - HAL_PIXEL_FORMAT_YCbCr_*_888
* - HAL_PIXEL_FORMAT_FLEX_RGB*_888
* - HAL_PIXEL_FORMAT_RGB[AX]_888[8],BGRA_8888,RGB_888
* - HAL_PIXEL_FORMAT_YV12,Y8,Y16,YCbCr_422_SP/I,YCrCb_420_SP
* - even implementation defined formats that can be represented by
* the structures
*
* Vertical increment (aka. row increment or stride) describes the distance in
* bytes from the first pixel of one row to the first pixel of the next row
* (below) for the component plane. This can be negative.
*
* Horizontal increment (aka. column or pixel increment) describes the distance
* in bytes from one pixel to the next pixel (to the right) on the same row for
* the component plane. This can be negative.
*
* Each plane can be subsampled either vertically or horizontally by
* a power-of-two factor.
*
* The bit-depth of each component can be arbitrary, as long as the pixels are
* laid out on whole bytes, in native byte-order, using the most significant
* bits of each unit.
*/
typedef enum android_flex_component {
/* luma */
FLEX_COMPONENT_Y = 1 << 0,
/* chroma blue */
FLEX_COMPONENT_Cb = 1 << 1,
/* chroma red */
FLEX_COMPONENT_Cr = 1 << 2,
/* red */
FLEX_COMPONENT_R = 1 << 10,
/* green */
FLEX_COMPONENT_G = 1 << 11,
/* blue */
FLEX_COMPONENT_B = 1 << 12,
/* alpha */
FLEX_COMPONENT_A = 1 << 30,
} android_flex_component_t;
typedef struct android_flex_plane {
/* pointer to the first byte of the top-left pixel of the plane. */
uint8_t *top_left;
android_flex_component_t component;
/* bits allocated for the component in each pixel. Must be a positive
multiple of 8. */
int32_t bits_per_component;
/* number of the most significant bits used in the format for this
component. Must be between 1 and bits_per_component, inclusive. */
int32_t bits_used;
/* horizontal increment */
int32_t h_increment;
/* vertical increment */
int32_t v_increment;
/* horizontal subsampling. Must be a positive power of 2. */
int32_t h_subsampling;
/* vertical subsampling. Must be a positive power of 2. */
int32_t v_subsampling;
} android_flex_plane_t;
typedef enum android_flex_format {
/* not a flexible format */
FLEX_FORMAT_INVALID = 0x0,
FLEX_FORMAT_Y = FLEX_COMPONENT_Y,
FLEX_FORMAT_YCbCr = FLEX_COMPONENT_Y | FLEX_COMPONENT_Cb | FLEX_COMPONENT_Cr,
FLEX_FORMAT_YCbCrA = FLEX_FORMAT_YCbCr | FLEX_COMPONENT_A,
FLEX_FORMAT_RGB = FLEX_COMPONENT_R | FLEX_COMPONENT_G | FLEX_COMPONENT_B,
FLEX_FORMAT_RGBA = FLEX_FORMAT_RGB | FLEX_COMPONENT_A,
} android_flex_format_t;
typedef struct android_flex_layout {
/* the kind of flexible format */
android_flex_format_t format;
/* number of planes; 0 for FLEX_FORMAT_INVALID */
uint32_t num_planes;
/* a plane for each component; ordered in increasing component value order.
E.g. FLEX_FORMAT_RGBA maps 0 -> R, 1 -> G, etc.
Can be NULL for FLEX_FORMAT_INVALID */
android_flex_plane_t *planes;
} android_flex_layout_t;
/**
* Structure used to define depth point clouds for format HAL_PIXEL_FORMAT_BLOB
* with dataSpace value of HAL_DATASPACE_DEPTH.
* When locking a native buffer of the above format and dataSpace value,
* the vaddr pointer can be cast to this structure.
*
* A variable-length list of (x,y,z, confidence) 3D points, as floats. (x, y,
* z) represents a measured point's position, with the coordinate system defined
* by the data source. Confidence represents the estimated likelihood that this
* measurement is correct. It is between 0.f and 1.f, inclusive, with 1.f ==
* 100% confidence.
*
* num_points is the number of points in the list
*
* xyz_points is the flexible array of floating-point values.
* It contains (num_points) * 4 floats.
*
* For example:
* android_depth_points d = get_depth_buffer();
* struct {
* float x; float y; float z; float confidence;
* } firstPoint, lastPoint;
*
* firstPoint.x = d.xyzc_points[0];
* firstPoint.y = d.xyzc_points[1];
* firstPoint.z = d.xyzc_points[2];
* firstPoint.confidence = d.xyzc_points[3];
* lastPoint.x = d.xyzc_points[(d.num_points - 1) * 4 + 0];
* lastPoint.y = d.xyzc_points[(d.num_points - 1) * 4 + 1];
* lastPoint.z = d.xyzc_points[(d.num_points - 1) * 4 + 2];
* lastPoint.confidence = d.xyzc_points[(d.num_points - 1) * 4 + 3];
*/
struct android_depth_points {
uint32_t num_points;
/** reserved for future use, set to 0 by gralloc's (*lock)() */
uint32_t reserved[8];
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wc99-extensions"
#endif
float xyzc_points[];
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
};
/**
* These structures are used to define the reference display's
* capabilities for HDR content. Display engine can use this
* to better tone map content to user's display.
* Color is defined in CIE XYZ coordinates
*/
struct android_xy_color {
float x;
float y;
};
struct android_smpte2086_metadata {
struct android_xy_color displayPrimaryRed;
struct android_xy_color displayPrimaryGreen;
struct android_xy_color displayPrimaryBlue;
struct android_xy_color whitePoint;
float maxLuminance;
float minLuminance;
};
struct android_cta861_3_metadata {
float maxContentLightLevel;
float maxFrameAverageLightLevel;
};
#ifdef __cplusplus
}
#endif
#endif /* SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Ideas on Board Oy
*
* Call stack backtraces
*/
#pragma once
#include <string>
#include <vector>
#include <libcamera/base/private.h>
#include <libcamera/base/class.h>
namespace libcamera {
class Backtrace
{
public:
Backtrace();
std::string toString(unsigned int skipLevels = 0) const;
private:
LIBCAMERA_DISABLE_COPY(Backtrace)
bool backtraceTrace();
bool unwindTrace();
std::vector<void *> backtrace_;
std::vector<std::string> backtraceText_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Method bind and invocation
*/
#pragma once
#include <memory>
#include <tuple>
#include <type_traits>
#include <utility>
namespace libcamera {
class Object;
enum ConnectionType {
ConnectionTypeAuto,
ConnectionTypeDirect,
ConnectionTypeQueued,
ConnectionTypeBlocking,
};
class BoundMethodPackBase
{
public:
virtual ~BoundMethodPackBase() = default;
};
template<typename R, typename... Args>
class BoundMethodPack : public BoundMethodPackBase
{
public:
BoundMethodPack(const Args &... args)
: args_(args...)
{
}
R returnValue()
{
return ret_;
}
std::tuple<typename std::remove_reference_t<Args>...> args_;
R ret_;
};
template<typename... Args>
class BoundMethodPack<void, Args...> : public BoundMethodPackBase
{
public:
BoundMethodPack(const Args &... args)
: args_(args...)
{
}
void returnValue()
{
}
std::tuple<typename std::remove_reference_t<Args>...> args_;
};
class BoundMethodBase
{
public:
BoundMethodBase(void *obj, Object *object, ConnectionType type)
: obj_(obj), object_(object), connectionType_(type)
{
}
virtual ~BoundMethodBase() = default;
template<typename T, std::enable_if_t<!std::is_same<Object, T>::value> * = nullptr>
bool match(T *obj) { return obj == obj_; }
bool match(Object *object) { return object == object_; }
Object *object() const { return object_; }
virtual void invokePack(BoundMethodPackBase *pack) = 0;
protected:
bool activatePack(std::shared_ptr<BoundMethodPackBase> pack,
bool deleteMethod);
void *obj_;
Object *object_;
private:
ConnectionType connectionType_;
};
template<typename R, typename... Args>
class BoundMethodArgs : public BoundMethodBase
{
public:
using PackType = BoundMethodPack<R, Args...>;
private:
template<std::size_t... I, typename T = R>
std::enable_if_t<!std::is_void<T>::value, void>
invokePack(BoundMethodPackBase *pack, std::index_sequence<I...>)
{
PackType *args = static_cast<PackType *>(pack);
args->ret_ = invoke(std::get<I>(args->args_)...);
}
template<std::size_t... I, typename T = R>
std::enable_if_t<std::is_void<T>::value, void>
invokePack(BoundMethodPackBase *pack, std::index_sequence<I...>)
{
/* args is effectively unused when the sequence I is empty. */
PackType *args [[gnu::unused]] = static_cast<PackType *>(pack);
invoke(std::get<I>(args->args_)...);
}
public:
BoundMethodArgs(void *obj, Object *object, ConnectionType type)
: BoundMethodBase(obj, object, type) {}
void invokePack(BoundMethodPackBase *pack) override
{
invokePack(pack, std::make_index_sequence<sizeof...(Args)>{});
}
virtual R activate(Args... args, bool deleteMethod = false) = 0;
virtual R invoke(Args... args) = 0;
};
template<typename T, typename R, typename Func, typename... Args>
class BoundMethodFunctor : public BoundMethodArgs<R, Args...>
{
public:
using PackType = typename BoundMethodArgs<R, Args...>::PackType;
BoundMethodFunctor(T *obj, Object *object, Func func,
ConnectionType type = ConnectionTypeAuto)
: BoundMethodArgs<R, Args...>(obj, object, type), func_(func)
{
}
R activate(Args... args, bool deleteMethod = false) override
{
if (!this->object_)
return func_(args...);
auto pack = std::make_shared<PackType>(args...);
bool sync = BoundMethodBase::activatePack(pack, deleteMethod);
return sync ? pack->returnValue() : R();
}
R invoke(Args... args) override
{
return func_(args...);
}
private:
Func func_;
};
template<typename T, typename R, typename... Args>
class BoundMethodMember : public BoundMethodArgs<R, Args...>
{
public:
using PackType = typename BoundMethodArgs<R, Args...>::PackType;
BoundMethodMember(T *obj, Object *object, R (T::*func)(Args...),
ConnectionType type = ConnectionTypeAuto)
: BoundMethodArgs<R, Args...>(obj, object, type), func_(func)
{
}
bool match(R (T::*func)(Args...)) const { return func == func_; }
R activate(Args... args, bool deleteMethod = false) override
{
if (!this->object_) {
T *obj = static_cast<T *>(this->obj_);
return (obj->*func_)(args...);
}
auto pack = std::make_shared<PackType>(args...);
bool sync = BoundMethodBase::activatePack(pack, deleteMethod);
return sync ? pack->returnValue() : R();
}
R invoke(Args... args) override
{
T *obj = static_cast<T *>(this->obj_);
return (obj->*func_)(args...);
}
private:
R (T::*func_)(Args...);
};
template<typename R, typename... Args>
class BoundMethodStatic : public BoundMethodArgs<R, Args...>
{
public:
BoundMethodStatic(R (*func)(Args...))
: BoundMethodArgs<R, Args...>(nullptr, nullptr, ConnectionTypeAuto),
func_(func)
{
}
bool match(R (*func)(Args...)) const { return func == func_; }
R activate(Args... args, [[maybe_unused]] bool deleteMethod = false) override
{
return (*func_)(args...);
}
R invoke(Args...) override
{
return R();
}
private:
R (*func_)(Args...);
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* Utilities and helpers for classes
*/
#pragma once
#include <memory>
namespace libcamera {
#ifndef __DOXYGEN__
#define LIBCAMERA_DISABLE_COPY(klass) \
klass(const klass &) = delete; \
klass &operator=(const klass &) = delete;
#define LIBCAMERA_DISABLE_MOVE(klass) \
klass(klass &&) = delete; \
klass &operator=(klass &&) = delete;
#define LIBCAMERA_DISABLE_COPY_AND_MOVE(klass) \
LIBCAMERA_DISABLE_COPY(klass) \
LIBCAMERA_DISABLE_MOVE(klass)
#else
#define LIBCAMERA_DISABLE_COPY(klass)
#define LIBCAMERA_DISABLE_MOVE(klass)
#define LIBCAMERA_DISABLE_COPY_AND_MOVE(klass)
#endif
#ifndef __DOXYGEN__
#define LIBCAMERA_DECLARE_PRIVATE() \
public: \
class Private; \
friend class Private; \
template <bool B = true> \
const Private *_d() const \
{ \
return Extensible::_d<Private>(); \
} \
template <bool B = true> \
Private *_d() \
{ \
return Extensible::_d<Private>(); \
}
#define LIBCAMERA_DECLARE_PUBLIC(klass) \
friend class klass; \
using Public = klass;
#define LIBCAMERA_O_PTR() \
_o<Public>()
#else
#define LIBCAMERA_DECLARE_PRIVATE()
#define LIBCAMERA_DECLARE_PUBLIC(klass)
#define LIBCAMERA_O_PTR()
#endif
class Extensible
{
public:
class Private
{
public:
Private();
virtual ~Private();
#ifndef __DOXYGEN__
template<typename T>
const T *_o() const
{
return static_cast<const T *>(o_);
}
template<typename T>
T *_o()
{
return static_cast<T *>(o_);
}
#endif
private:
/* To initialize o_ from Extensible. */
friend class Extensible;
Extensible *const o_;
};
Extensible(std::unique_ptr<Private> d);
protected:
template<typename T>
const T *_d() const
{
return static_cast<const T *>(d_.get());
}
template<typename T>
T *_d()
{
return static_cast<T *>(d_.get());
}
private:
const std::unique_ptr<Private> d_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* Compiler support
*/
#pragma once
#if __cplusplus >= 201703L
#define __nodiscard [[nodiscard]]
#else
#define __nodiscard
#endif

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Event dispatcher
*/
#pragma once
#include <vector>
#include <libcamera/base/private.h>
namespace libcamera {
class EventNotifier;
class Timer;
class EventDispatcher
{
public:
virtual ~EventDispatcher();
virtual void registerEventNotifier(EventNotifier *notifier) = 0;
virtual void unregisterEventNotifier(EventNotifier *notifier) = 0;
virtual void registerTimer(Timer *timer) = 0;
virtual void unregisterTimer(Timer *timer) = 0;
virtual void processEvents() = 0;
virtual void interrupt() = 0;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Poll-based event dispatcher
*/
#pragma once
#include <list>
#include <map>
#include <vector>
#include <libcamera/base/private.h>
#include <libcamera/base/event_dispatcher.h>
#include <libcamera/base/unique_fd.h>
struct pollfd;
namespace libcamera {
class EventNotifier;
class Timer;
class EventDispatcherPoll final : public EventDispatcher
{
public:
EventDispatcherPoll();
~EventDispatcherPoll();
void registerEventNotifier(EventNotifier *notifier);
void unregisterEventNotifier(EventNotifier *notifier);
void registerTimer(Timer *timer);
void unregisterTimer(Timer *timer);
void processEvents();
void interrupt();
private:
struct EventNotifierSetPoll {
short events() const;
EventNotifier *notifiers[3];
};
int poll(std::vector<struct pollfd> *pollfds);
void processInterrupt(const struct pollfd &pfd);
void processNotifiers(const std::vector<struct pollfd> &pollfds);
void processTimers();
std::map<int, EventNotifierSetPoll> notifiers_;
std::list<Timer *> timers_;
UniqueFD eventfd_;
bool processingEvents_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* File descriptor event notifier
*/
#pragma once
#include <libcamera/base/private.h>
#include <libcamera/base/object.h>
#include <libcamera/base/signal.h>
namespace libcamera {
class Message;
class EventNotifier : public Object
{
public:
enum Type {
Read,
Write,
Exception,
};
EventNotifier(int fd, Type type, Object *parent = nullptr);
virtual ~EventNotifier();
Type type() const { return type_; }
int fd() const { return fd_; }
bool enabled() const { return enabled_; }
void setEnabled(bool enable);
Signal<> activated;
protected:
void message(Message *msg) override;
private:
int fd_;
Type type_;
bool enabled_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* File I/O operations
*/
#pragma once
#include <sys/types.h>
#include <map>
#include <string>
#include <libcamera/base/private.h>
#include <libcamera/base/class.h>
#include <libcamera/base/flags.h>
#include <libcamera/base/span.h>
#include <libcamera/base/unique_fd.h>
namespace libcamera {
class File
{
public:
enum class MapFlag {
NoOption = 0,
Private = (1 << 0),
};
using MapFlags = Flags<MapFlag>;
enum class OpenModeFlag {
NotOpen = 0,
ReadOnly = (1 << 0),
WriteOnly = (1 << 1),
ReadWrite = ReadOnly | WriteOnly,
};
using OpenMode = Flags<OpenModeFlag>;
File(const std::string &name);
File();
~File();
const std::string &fileName() const { return name_; }
void setFileName(const std::string &name);
bool exists() const;
bool open(OpenMode mode);
bool isOpen() const { return fd_.isValid(); }
OpenMode openMode() const { return mode_; }
void close();
int error() const { return error_; }
ssize_t size() const;
off_t pos() const;
off_t seek(off_t pos);
ssize_t read(const Span<uint8_t> &data);
ssize_t write(const Span<const uint8_t> &data);
Span<uint8_t> map(off_t offset = 0, ssize_t size = -1,
MapFlags flags = MapFlag::NoOption);
bool unmap(uint8_t *addr);
static bool exists(const std::string &name);
private:
LIBCAMERA_DISABLE_COPY(File)
void unmapAll();
std::string name_;
UniqueFD fd_;
OpenMode mode_;
int error_;
std::map<void *, size_t> maps_;
};
LIBCAMERA_FLAGS_ENABLE_OPERATORS(File::MapFlag)
LIBCAMERA_FLAGS_ENABLE_OPERATORS(File::OpenModeFlag)
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* Type-safe enum-based bitfields
*/
#pragma once
#include <type_traits>
namespace libcamera {
template<typename E>
class Flags
{
public:
static_assert(std::is_enum<E>::value,
"Flags<> template parameter must be an enum");
using Type = std::underlying_type_t<E>;
constexpr Flags()
: value_(0)
{
}
constexpr Flags(E flag)
: value_(static_cast<Type>(flag))
{
}
constexpr Flags &operator&=(E flag)
{
value_ &= static_cast<Type>(flag);
return *this;
}
constexpr Flags &operator&=(Flags other)
{
value_ &= other.value_;
return *this;
}
constexpr Flags &operator|=(E flag)
{
value_ |= static_cast<Type>(flag);
return *this;
}
constexpr Flags &operator|=(Flags other)
{
value_ |= other.value_;
return *this;
}
constexpr Flags &operator^=(E flag)
{
value_ ^= static_cast<Type>(flag);
return *this;
}
constexpr Flags &operator^=(Flags other)
{
value_ ^= other.value_;
return *this;
}
constexpr bool operator==(E flag)
{
return value_ == static_cast<Type>(flag);
}
constexpr bool operator==(Flags other)
{
return value_ == static_cast<Type>(other);
}
constexpr bool operator!=(E flag)
{
return value_ != static_cast<Type>(flag);
}
constexpr bool operator!=(Flags other)
{
return value_ != static_cast<Type>(other);
}
constexpr explicit operator Type() const
{
return value_;
}
constexpr explicit operator bool() const
{
return !!value_;
}
constexpr Flags operator&(E flag) const
{
return Flags(static_cast<E>(value_ & static_cast<Type>(flag)));
}
constexpr Flags operator&(Flags other) const
{
return Flags(static_cast<E>(value_ & other.value_));
}
constexpr Flags operator|(E flag) const
{
return Flags(static_cast<E>(value_ | static_cast<Type>(flag)));
}
constexpr Flags operator|(Flags other) const
{
return Flags(static_cast<E>(value_ | other.value_));
}
constexpr Flags operator^(E flag) const
{
return Flags(static_cast<E>(value_ ^ static_cast<Type>(flag)));
}
constexpr Flags operator^(Flags other) const
{
return Flags(static_cast<E>(value_ ^ other.value_));
}
constexpr Flags operator~() const
{
return Flags(static_cast<E>(~value_));
}
constexpr bool operator!() const
{
return !value_;
}
private:
Type value_;
};
#ifndef __DOXYGEN__
template<typename E>
struct flags_enable_operators {
static const bool enable = false;
};
template<typename E>
std::enable_if_t<flags_enable_operators<E>::enable, Flags<E>>
operator|(E lhs, E rhs)
{
using type = std::underlying_type_t<E>;
return Flags<E>(static_cast<E>(static_cast<type>(lhs) | static_cast<type>(rhs)));
}
template<typename E>
std::enable_if_t<flags_enable_operators<E>::enable, Flags<E>>
operator&(E lhs, E rhs)
{
using type = std::underlying_type_t<E>;
return Flags<E>(static_cast<E>(static_cast<type>(lhs) & static_cast<type>(rhs)));
}
template<typename E>
std::enable_if_t<flags_enable_operators<E>::enable, Flags<E>>
operator^(E lhs, E rhs)
{
using type = std::underlying_type_t<E>;
return Flags<E>(static_cast<E>(static_cast<type>(lhs) ^ static_cast<type>(rhs)));
}
template<typename E>
std::enable_if_t<flags_enable_operators<E>::enable, Flags<E>>
operator~(E rhs)
{
using type = std::underlying_type_t<E>;
return Flags<E>(static_cast<E>(~static_cast<type>(rhs)));
}
#define LIBCAMERA_FLAGS_ENABLE_OPERATORS(_enum) \
template<> \
struct flags_enable_operators<_enum> { \
static const bool enable = true; \
};
#else /* __DOXYGEN__ */
#define LIBCAMERA_FLAGS_ENABLE_OPERATORS(_enum)
#endif /* __DOXYGEN__ */
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* Logging infrastructure
*/
#pragma once
#include <chrono>
#include <sstream>
#include <libcamera/base/private.h>
#include <libcamera/base/class.h>
#include <libcamera/base/utils.h>
namespace libcamera {
enum LogSeverity {
LogInvalid = -1,
LogDebug = 0,
LogInfo,
LogWarning,
LogError,
LogFatal,
};
class LogCategory
{
public:
static LogCategory *create(const char *name);
const std::string &name() const { return name_; }
LogSeverity severity() const { return severity_; }
void setSeverity(LogSeverity severity);
static const LogCategory &defaultCategory();
private:
explicit LogCategory(const char *name);
const std::string name_;
LogSeverity severity_;
};
#define LOG_DECLARE_CATEGORY(name) \
extern const LogCategory &_LOG_CATEGORY(name)();
#define LOG_DEFINE_CATEGORY(name) \
LOG_DECLARE_CATEGORY(name) \
const LogCategory &_LOG_CATEGORY(name)() \
{ \
/* The instance will be deleted by the Logger destructor. */ \
static LogCategory *category = LogCategory::create(#name); \
return *category; \
}
class LogMessage
{
public:
LogMessage(const char *fileName, unsigned int line,
const LogCategory &category, LogSeverity severity,
const std::string &prefix = std::string());
LogMessage(LogMessage &&);
~LogMessage();
std::ostream &stream() { return msgStream_; }
const utils::time_point &timestamp() const { return timestamp_; }
LogSeverity severity() const { return severity_; }
const LogCategory &category() const { return category_; }
const std::string &fileInfo() const { return fileInfo_; }
const std::string &prefix() const { return prefix_; }
const std::string msg() const { return msgStream_.str(); }
private:
LIBCAMERA_DISABLE_COPY(LogMessage)
void init(const char *fileName, unsigned int line);
std::ostringstream msgStream_;
const LogCategory &category_;
LogSeverity severity_;
utils::time_point timestamp_;
std::string fileInfo_;
std::string prefix_;
};
class Loggable
{
public:
virtual ~Loggable();
protected:
virtual std::string logPrefix() const = 0;
LogMessage _log(const LogCategory *category, LogSeverity severity,
const char *fileName = __builtin_FILE(),
unsigned int line = __builtin_LINE()) const;
};
LogMessage _log(const LogCategory *category, LogSeverity severity,
const char *fileName = __builtin_FILE(),
unsigned int line = __builtin_LINE());
#ifndef __DOXYGEN__
#define _LOG_CATEGORY(name) logCategory##name
#define _LOG1(severity) \
_log(nullptr, Log##severity).stream()
#define _LOG2(category, severity) \
_log(&_LOG_CATEGORY(category)(), Log##severity).stream()
/*
* Expand the LOG() macro to _LOG1() or _LOG2() based on the number of
* arguments.
*/
#define _LOG_MACRO(_1, _2, NAME, ...) NAME
#define LOG(...) _LOG_MACRO(__VA_ARGS__, _LOG2, _LOG1)(__VA_ARGS__)
#else /* __DOXYGEN___ */
#define LOG(category, severity)
#endif /* __DOXYGEN__ */
#ifndef NDEBUG
#define ASSERT(condition) static_cast<void>(({ \
if (!(condition)) \
LOG(Fatal) << "assertion \"" #condition "\" failed in " \
<< __func__ << "()"; \
}))
#else
#define ASSERT(condition) static_cast<void>(false && (condition))
#endif
} /* namespace libcamera */

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# SPDX-License-Identifier: CC0-1.0
libcamera_base_include_dir = libcamera_include_dir / 'base'
libcamera_base_public_headers = files([
'bound_method.h',
'class.h',
'compiler.h',
'flags.h',
'object.h',
'shared_fd.h',
'signal.h',
'span.h',
'unique_fd.h',
])
libcamera_base_private_headers = files([
'backtrace.h',
'event_dispatcher.h',
'event_dispatcher_poll.h',
'event_notifier.h',
'file.h',
'log.h',
'message.h',
'mutex.h',
'private.h',
'semaphore.h',
'thread.h',
'thread_annotations.h',
'timer.h',
'utils.h',
])
libcamera_base_headers = [
libcamera_base_public_headers,
libcamera_base_private_headers,
]
install_headers(libcamera_base_public_headers,
subdir : libcamera_base_include_dir)

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Message queue support
*/
#pragma once
#include <atomic>
#include <libcamera/base/private.h>
#include <libcamera/base/bound_method.h>
namespace libcamera {
class BoundMethodBase;
class Object;
class Semaphore;
class Thread;
class Message
{
public:
enum Type {
None = 0,
InvokeMessage = 1,
ThreadMoveMessage = 2,
DeferredDelete = 3,
UserMessage = 1000,
};
Message(Type type);
virtual ~Message();
Type type() const { return type_; }
Object *receiver() const { return receiver_; }
static Type registerMessageType();
private:
friend class Thread;
Type type_;
Object *receiver_;
static std::atomic_uint nextUserType_;
};
class InvokeMessage : public Message
{
public:
InvokeMessage(BoundMethodBase *method,
std::shared_ptr<BoundMethodPackBase> pack,
Semaphore *semaphore = nullptr,
bool deleteMethod = false);
~InvokeMessage();
Semaphore *semaphore() const { return semaphore_; }
void invoke();
private:
BoundMethodBase *method_;
std::shared_ptr<BoundMethodPackBase> pack_;
Semaphore *semaphore_;
bool deleteMethod_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* Mutex classes with clang thread safety annotation
*/
#pragma once
#include <condition_variable>
#include <mutex>
#include <libcamera/base/private.h>
#include <libcamera/base/thread_annotations.h>
namespace libcamera {
/* \todo using Mutex = std::mutex if libc++ is used. */
#ifndef __DOXYGEN__
class LIBCAMERA_TSA_CAPABILITY("mutex") Mutex final
{
public:
constexpr Mutex()
{
}
void lock() LIBCAMERA_TSA_ACQUIRE()
{
mutex_.lock();
}
void unlock() LIBCAMERA_TSA_RELEASE()
{
mutex_.unlock();
}
private:
friend class MutexLocker;
std::mutex mutex_;
};
class LIBCAMERA_TSA_SCOPED_CAPABILITY MutexLocker final
{
public:
explicit MutexLocker(Mutex &mutex) LIBCAMERA_TSA_ACQUIRE(mutex)
: lock_(mutex.mutex_)
{
}
MutexLocker(Mutex &mutex, std::defer_lock_t t) noexcept LIBCAMERA_TSA_EXCLUDES(mutex)
: lock_(mutex.mutex_, t)
{
}
~MutexLocker() LIBCAMERA_TSA_RELEASE()
{
}
void lock() LIBCAMERA_TSA_ACQUIRE()
{
lock_.lock();
}
bool try_lock() LIBCAMERA_TSA_TRY_ACQUIRE(true)
{
return lock_.try_lock();
}
void unlock() LIBCAMERA_TSA_RELEASE()
{
lock_.unlock();
}
private:
friend class ConditionVariable;
std::unique_lock<std::mutex> lock_;
};
class ConditionVariable final
{
public:
ConditionVariable()
{
}
void notify_one() noexcept
{
cv_.notify_one();
}
void notify_all() noexcept
{
cv_.notify_all();
}
template<class Predicate>
void wait(MutexLocker &locker, Predicate stopWaiting)
{
cv_.wait(locker.lock_, stopWaiting);
}
template<class Rep, class Period, class Predicate>
bool wait_for(MutexLocker &locker,
const std::chrono::duration<Rep, Period> &relTime,
Predicate stopWaiting)
{
return cv_.wait_for(locker.lock_, relTime, stopWaiting);
}
private:
std::condition_variable cv_;
};
#else /* __DOXYGEN__ */
class Mutex final
{
};
class MutexLocker final
{
};
class ConditionVariable final
{
};
#endif /* __DOXYGEN__ */
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Base object
*/
#pragma once
#include <list>
#include <memory>
#include <vector>
#include <libcamera/base/bound_method.h>
namespace libcamera {
class Message;
template<typename... Args>
class Signal;
class SignalBase;
class Thread;
class Object
{
public:
Object(Object *parent = nullptr);
virtual ~Object();
void deleteLater();
void postMessage(std::unique_ptr<Message> msg);
template<typename T, typename R, typename... FuncArgs, typename... Args,
std::enable_if_t<std::is_base_of<Object, T>::value> * = nullptr>
R invokeMethod(R (T::*func)(FuncArgs...), ConnectionType type,
Args&&... args)
{
T *obj = static_cast<T *>(this);
auto *method = new BoundMethodMember<T, R, FuncArgs...>(obj, this, func, type);
return method->activate(args..., true);
}
Thread *thread() const { return thread_; }
void moveToThread(Thread *thread);
Object *parent() const { return parent_; }
protected:
virtual void message(Message *msg);
bool assertThreadBound(const char *message);
private:
friend class SignalBase;
friend class Thread;
void notifyThreadMove();
void connect(SignalBase *signal);
void disconnect(SignalBase *signal);
Object *parent_;
std::vector<Object *> children_;
Thread *thread_;
std::list<SignalBase *> signals_;
unsigned int pendingMessages_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* Private Header Validation
*
* A selection of internal libcamera headers are installed as part
* of the libcamera package to allow sharing of a select subset of
* internal functionality with IPA module only.
*
* This functionality is not considered part of the public libcamera
* API, and can therefore potentially face ABI instabilities which
* should not be exposed to applications. IPA modules however should be
* versioned and more closely matched to the libcamera installation.
*
* Components which include this file can not be included in any file
* which forms part of the libcamera API.
*/
#ifndef LIBCAMERA_BASE_PRIVATE
#error "Private headers must not be included in the libcamera API"
#endif

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* General-purpose counting semaphore
*/
#pragma once
#include <libcamera/base/private.h>
#include <libcamera/base/mutex.h>
namespace libcamera {
class Semaphore
{
public:
Semaphore(unsigned int n = 0);
unsigned int available() LIBCAMERA_TSA_EXCLUDES(mutex_);
void acquire(unsigned int n = 1) LIBCAMERA_TSA_EXCLUDES(mutex_);
bool tryAcquire(unsigned int n = 1) LIBCAMERA_TSA_EXCLUDES(mutex_);
void release(unsigned int n = 1) LIBCAMERA_TSA_EXCLUDES(mutex_);
private:
Mutex mutex_;
ConditionVariable cv_;
unsigned int available_ LIBCAMERA_TSA_GUARDED_BY(mutex_);
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* File descriptor wrapper with shared ownership
*/
#pragma once
#include <memory>
namespace libcamera {
class UniqueFD;
class SharedFD final
{
public:
explicit SharedFD(const int &fd = -1);
explicit SharedFD(int &&fd);
explicit SharedFD(UniqueFD fd);
SharedFD(const SharedFD &other);
SharedFD(SharedFD &&other);
~SharedFD();
SharedFD &operator=(const SharedFD &other);
SharedFD &operator=(SharedFD &&other);
bool isValid() const { return fd_ != nullptr; }
int get() const { return fd_ ? fd_->fd() : -1; }
UniqueFD dup() const;
private:
class Descriptor
{
public:
Descriptor(int fd, bool duplicate);
~Descriptor();
int fd() const { return fd_; }
private:
int fd_;
};
std::shared_ptr<Descriptor> fd_;
};
static inline bool operator==(const SharedFD &lhs, const SharedFD &rhs)
{
return lhs.get() == rhs.get();
}
static inline bool operator!=(const SharedFD &lhs, const SharedFD &rhs)
{
return !(lhs == rhs);
}
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Signal & slot implementation
*/
#pragma once
#include <functional>
#include <list>
#include <type_traits>
#include <vector>
#include <libcamera/base/bound_method.h>
namespace libcamera {
class Object;
class SignalBase
{
public:
void disconnect(Object *object);
protected:
using SlotList = std::list<BoundMethodBase *>;
void connect(BoundMethodBase *slot);
void disconnect(std::function<bool(SlotList::iterator &)> match);
SlotList slots();
private:
SlotList slots_;
};
template<typename... Args>
class Signal : public SignalBase
{
public:
~Signal()
{
disconnect();
}
#ifndef __DOXYGEN__
template<typename T, typename R, std::enable_if_t<std::is_base_of<Object, T>::value> * = nullptr>
void connect(T *obj, R (T::*func)(Args...),
ConnectionType type = ConnectionTypeAuto)
{
Object *object = static_cast<Object *>(obj);
SignalBase::connect(new BoundMethodMember<T, R, Args...>(obj, object, func, type));
}
template<typename T, typename R, std::enable_if_t<!std::is_base_of<Object, T>::value> * = nullptr>
#else
template<typename T, typename R>
#endif
void connect(T *obj, R (T::*func)(Args...))
{
SignalBase::connect(new BoundMethodMember<T, R, Args...>(obj, nullptr, func));
}
#ifndef __DOXYGEN__
template<typename T, typename Func,
std::enable_if_t<std::is_base_of<Object, T>::value
#if __cplusplus >= 201703L
&& std::is_invocable_v<Func, Args...>
#endif
> * = nullptr>
void connect(T *obj, Func func, ConnectionType type = ConnectionTypeAuto)
{
Object *object = static_cast<Object *>(obj);
SignalBase::connect(new BoundMethodFunctor<T, void, Func, Args...>(obj, object, func, type));
}
template<typename T, typename Func,
std::enable_if_t<!std::is_base_of<Object, T>::value
#if __cplusplus >= 201703L
&& std::is_invocable_v<Func, Args...>
#endif
> * = nullptr>
#else
template<typename T, typename Func>
#endif
void connect(T *obj, Func func)
{
SignalBase::connect(new BoundMethodFunctor<T, void, Func, Args...>(obj, nullptr, func));
}
template<typename R>
void connect(R (*func)(Args...))
{
SignalBase::connect(new BoundMethodStatic<R, Args...>(func));
}
void disconnect()
{
SignalBase::disconnect([]([[maybe_unused]] SlotList::iterator &iter) {
return true;
});
}
template<typename T>
void disconnect(T *obj)
{
SignalBase::disconnect([obj](SlotList::iterator &iter) {
return (*iter)->match(obj);
});
}
template<typename T, typename R>
void disconnect(T *obj, R (T::*func)(Args...))
{
SignalBase::disconnect([obj, func](SlotList::iterator &iter) {
BoundMethodArgs<R, Args...> *slot =
static_cast<BoundMethodArgs<R, Args...> *>(*iter);
if (!slot->match(obj))
return false;
/*
* If the object matches the slot, the slot is
* guaranteed to be a member slot, so we can safely
* cast it to BoundMethodMember<T, Args...> to match
* func.
*/
return static_cast<BoundMethodMember<T, R, Args...> *>(slot)->match(func);
});
}
template<typename R>
void disconnect(R (*func)(Args...))
{
SignalBase::disconnect([func](SlotList::iterator &iter) {
BoundMethodArgs<R, Args...> *slot =
static_cast<BoundMethodArgs<R, Args...> *>(*iter);
if (!slot->match(nullptr))
return false;
return static_cast<BoundMethodStatic<R, Args...> *>(slot)->match(func);
});
}
void emit(Args... args)
{
/*
* Make a copy of the slots list as the slot could call the
* disconnect operation, invalidating the iterator.
*/
for (BoundMethodBase *slot : slots())
static_cast<BoundMethodArgs<void, Args...> *>(slot)->activate(args...);
}
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* C++20 std::span<> implementation for C++11
*/
#pragma once
#include <array>
#include <iterator>
#include <limits>
#include <stddef.h>
#include <type_traits>
namespace libcamera {
static constexpr std::size_t dynamic_extent = std::numeric_limits<std::size_t>::max();
template<typename T, std::size_t Extent = dynamic_extent>
class Span;
namespace details {
template<typename U>
struct is_array : public std::false_type {
};
template<typename U, std::size_t N>
struct is_array<std::array<U, N>> : public std::true_type {
};
template<typename U>
struct is_span : public std::false_type {
};
template<typename U, std::size_t Extent>
struct is_span<Span<U, Extent>> : public std::true_type {
};
} /* namespace details */
namespace utils {
template<typename C>
constexpr auto size(const C &c) -> decltype(c.size())
{
return c.size();
}
template<typename C>
constexpr auto data(const C &c) -> decltype(c.data())
{
return c.data();
}
template<typename C>
constexpr auto data(C &c) -> decltype(c.data())
{
return c.data();
}
template<class T, std::size_t N>
constexpr T *data(T (&array)[N]) noexcept
{
return array;
}
template<std::size_t I, typename T>
struct tuple_element;
template<std::size_t I, typename T, std::size_t N>
struct tuple_element<I, Span<T, N>> {
using type = T;
};
template<typename T>
struct tuple_size;
template<typename T, std::size_t N>
struct tuple_size<Span<T, N>> : public std::integral_constant<std::size_t, N> {
};
template<typename T>
struct tuple_size<Span<T, dynamic_extent>>;
} /* namespace utils */
template<typename T, std::size_t Extent>
class Span
{
public:
using element_type = T;
using value_type = typename std::remove_cv_t<T>;
using size_type = std::size_t;
using difference_type = std::ptrdiff_t;
using pointer = T *;
using const_pointer = const T *;
using reference = T &;
using const_reference = const T &;
using iterator = pointer;
using const_iterator = const_pointer;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
static constexpr std::size_t extent = Extent;
template<bool Dependent = false,
typename = std::enable_if_t<Dependent || Extent == 0>>
constexpr Span() noexcept
: data_(nullptr)
{
}
explicit constexpr Span(pointer ptr, [[maybe_unused]] size_type count)
: data_(ptr)
{
}
explicit constexpr Span(pointer first, [[maybe_unused]] pointer last)
: data_(first)
{
}
template<std::size_t N>
constexpr Span(element_type (&arr)[N],
std::enable_if_t<std::is_convertible<std::remove_pointer_t<decltype(utils::data(arr))> (*)[],
element_type (*)[]>::value &&
N == Extent,
std::nullptr_t> = nullptr) noexcept
: data_(arr)
{
}
template<std::size_t N>
constexpr Span(std::array<value_type, N> &arr,
std::enable_if_t<std::is_convertible<std::remove_pointer_t<decltype(utils::data(arr))> (*)[],
element_type (*)[]>::value &&
N == Extent,
std::nullptr_t> = nullptr) noexcept
: data_(arr.data())
{
}
template<std::size_t N>
constexpr Span(const std::array<value_type, N> &arr,
std::enable_if_t<std::is_convertible<std::remove_pointer_t<decltype(utils::data(arr))> (*)[],
element_type (*)[]>::value &&
N == Extent,
std::nullptr_t> = nullptr) noexcept
: data_(arr.data())
{
}
template<class Container>
explicit constexpr Span(Container &cont,
std::enable_if_t<!details::is_span<Container>::value &&
!details::is_array<Container>::value &&
!std::is_array<Container>::value &&
std::is_convertible<std::remove_pointer_t<decltype(utils::data(cont))> (*)[],
element_type (*)[]>::value,
std::nullptr_t> = nullptr)
: data_(utils::data(cont))
{
}
template<class Container>
explicit constexpr Span(const Container &cont,
std::enable_if_t<!details::is_span<Container>::value &&
!details::is_array<Container>::value &&
!std::is_array<Container>::value &&
std::is_convertible<std::remove_pointer_t<decltype(utils::data(cont))> (*)[],
element_type (*)[]>::value,
std::nullptr_t> = nullptr)
: data_(utils::data(cont))
{
static_assert(utils::size(cont) == Extent, "Size mismatch");
}
template<class U, std::size_t N>
explicit constexpr Span(const Span<U, N> &s,
std::enable_if_t<std::is_convertible<U (*)[], element_type (*)[]>::value &&
N == Extent,
std::nullptr_t> = nullptr) noexcept
: data_(s.data())
{
}
constexpr Span(const Span &other) noexcept = default;
constexpr Span &operator=(const Span &other) noexcept = default;
constexpr iterator begin() const { return data(); }
constexpr const_iterator cbegin() const { return begin(); }
constexpr iterator end() const { return data() + size(); }
constexpr const_iterator cend() const { return end(); }
constexpr reverse_iterator rbegin() const { return reverse_iterator(end()); }
constexpr const_reverse_iterator crbegin() const { return rbegin(); }
constexpr reverse_iterator rend() const { return reverse_iterator(begin()); }
constexpr const_reverse_iterator crend() const { return rend(); }
constexpr reference front() const { return *data(); }
constexpr reference back() const { return *(data() + size() - 1); }
constexpr reference operator[](size_type idx) const { return data()[idx]; }
constexpr pointer data() const noexcept { return data_; }
constexpr size_type size() const noexcept { return Extent; }
constexpr size_type size_bytes() const noexcept { return size() * sizeof(element_type); }
constexpr bool empty() const noexcept { return size() == 0; }
template<std::size_t Count>
constexpr Span<element_type, Count> first() const
{
static_assert(Count <= Extent, "Count larger than size");
return Span<element_type, Count>{ data(), Count };
}
constexpr Span<element_type, dynamic_extent> first(std::size_t Count) const
{
return Span<element_type, dynamic_extent>{ data(), Count };
}
template<std::size_t Count>
constexpr Span<element_type, Count> last() const
{
static_assert(Count <= Extent, "Count larger than size");
return Span<element_type, Count>{ data() + size() - Count, Count };
}
constexpr Span<element_type, dynamic_extent> last(std::size_t Count) const
{
return Span<element_type, dynamic_extent>{ data() + size() - Count, Count };
}
template<std::size_t Offset, std::size_t Count = dynamic_extent>
constexpr Span<element_type, Count != dynamic_extent ? Count : Extent - Offset> subspan() const
{
static_assert(Offset <= Extent, "Offset larger than size");
static_assert(Count == dynamic_extent || Count + Offset <= Extent,
"Offset + Count larger than size");
return Span<element_type, Count != dynamic_extent ? Count : Extent - Offset>{
data() + Offset,
Count == dynamic_extent ? size() - Offset : Count
};
}
constexpr Span<element_type, dynamic_extent>
subspan(std::size_t Offset, std::size_t Count = dynamic_extent) const
{
return Span<element_type, dynamic_extent>{
data() + Offset,
Count == dynamic_extent ? size() - Offset : Count
};
}
private:
pointer data_;
};
template<typename T>
class Span<T, dynamic_extent>
{
public:
using element_type = T;
using value_type = typename std::remove_cv_t<T>;
using size_type = std::size_t;
using difference_type = std::ptrdiff_t;
using pointer = T *;
using const_pointer = const T *;
using reference = T &;
using const_reference = const T &;
using iterator = T *;
using const_iterator = const T *;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
static constexpr std::size_t extent = dynamic_extent;
constexpr Span() noexcept
: data_(nullptr), size_(0)
{
}
constexpr Span(pointer ptr, size_type count)
: data_(ptr), size_(count)
{
}
constexpr Span(pointer first, pointer last)
: data_(first), size_(last - first)
{
}
template<std::size_t N>
constexpr Span(element_type (&arr)[N],
std::enable_if_t<std::is_convertible<std::remove_pointer_t<decltype(utils::data(arr))> (*)[],
element_type (*)[]>::value,
std::nullptr_t> = nullptr) noexcept
: data_(arr), size_(N)
{
}
template<std::size_t N>
constexpr Span(std::array<value_type, N> &arr,
std::enable_if_t<std::is_convertible<std::remove_pointer_t<decltype(utils::data(arr))> (*)[],
element_type (*)[]>::value,
std::nullptr_t> = nullptr) noexcept
: data_(utils::data(arr)), size_(N)
{
}
template<std::size_t N>
constexpr Span(const std::array<value_type, N> &arr) noexcept
: data_(utils::data(arr)), size_(N)
{
}
template<class Container>
constexpr Span(Container &cont,
std::enable_if_t<!details::is_span<Container>::value &&
!details::is_array<Container>::value &&
!std::is_array<Container>::value &&
std::is_convertible<std::remove_pointer_t<decltype(utils::data(cont))> (*)[],
element_type (*)[]>::value,
std::nullptr_t> = nullptr)
: data_(utils::data(cont)), size_(utils::size(cont))
{
}
template<class Container>
constexpr Span(const Container &cont,
std::enable_if_t<!details::is_span<Container>::value &&
!details::is_array<Container>::value &&
!std::is_array<Container>::value &&
std::is_convertible<std::remove_pointer_t<decltype(utils::data(cont))> (*)[],
element_type (*)[]>::value,
std::nullptr_t> = nullptr)
: data_(utils::data(cont)), size_(utils::size(cont))
{
}
template<class U, std::size_t N>
constexpr Span(const Span<U, N> &s,
std::enable_if_t<std::is_convertible<U (*)[], element_type (*)[]>::value,
std::nullptr_t> = nullptr) noexcept
: data_(s.data()), size_(s.size())
{
}
constexpr Span(const Span &other) noexcept = default;
constexpr Span &operator=(const Span &other) noexcept
{
data_ = other.data_;
size_ = other.size_;
return *this;
}
constexpr iterator begin() const { return data(); }
constexpr const_iterator cbegin() const { return begin(); }
constexpr iterator end() const { return data() + size(); }
constexpr const_iterator cend() const { return end(); }
constexpr reverse_iterator rbegin() const { return reverse_iterator(end()); }
constexpr const_reverse_iterator crbegin() const { return rbegin(); }
constexpr reverse_iterator rend() const { return reverse_iterator(begin()); }
constexpr const_reverse_iterator crend() const { return rend(); }
constexpr reference front() const { return *data(); }
constexpr reference back() const { return *(data() + size() - 1); }
constexpr reference operator[](size_type idx) const { return data()[idx]; }
constexpr pointer data() const noexcept { return data_; }
constexpr size_type size() const noexcept { return size_; }
constexpr size_type size_bytes() const noexcept { return size() * sizeof(element_type); }
constexpr bool empty() const noexcept { return size() == 0; }
template<std::size_t Count>
constexpr Span<element_type, Count> first() const
{
return Span<element_type, Count>{ data(), Count };
}
constexpr Span<element_type, dynamic_extent> first(std::size_t Count) const
{
return { data(), Count };
}
template<std::size_t Count>
constexpr Span<element_type, Count> last() const
{
return Span<element_type, Count>{ data() + size() - Count, Count };
}
constexpr Span<element_type, dynamic_extent> last(std::size_t Count) const
{
return Span<element_type, dynamic_extent>{ data() + size() - Count, Count };
}
template<std::size_t Offset, std::size_t Count = dynamic_extent>
constexpr Span<element_type, Count> subspan() const
{
return Span<element_type, Count>{
data() + Offset,
Count == dynamic_extent ? size() - Offset : Count
};
}
constexpr Span<element_type, dynamic_extent>
subspan(std::size_t Offset, std::size_t Count = dynamic_extent) const
{
return Span<element_type, dynamic_extent>{
data() + Offset,
Count == dynamic_extent ? size() - Offset : Count
};
}
private:
pointer data_;
size_type size_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Thread support
*/
#pragma once
#include <memory>
#include <sys/types.h>
#include <thread>
#include <libcamera/base/private.h>
#include <libcamera/base/message.h>
#include <libcamera/base/signal.h>
#include <libcamera/base/utils.h>
namespace libcamera {
class EventDispatcher;
class Message;
class Object;
class ThreadData;
class ThreadMain;
class Thread
{
public:
Thread();
virtual ~Thread();
void start();
void exit(int code = 0);
bool wait(utils::duration duration = utils::duration::max());
bool isRunning();
Signal<> finished;
static Thread *current();
static pid_t currentId();
EventDispatcher *eventDispatcher();
void dispatchMessages(Message::Type type = Message::Type::None);
protected:
int exec();
virtual void run();
private:
void startThread();
void finishThread();
void postMessage(std::unique_ptr<Message> msg, Object *receiver);
void removeMessages(Object *receiver);
friend class Object;
friend class ThreadData;
friend class ThreadMain;
void moveObject(Object *object);
void moveObject(Object *object, ThreadData *currentData,
ThreadData *targetData);
std::thread thread_;
ThreadData *data_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* Macro of Clang thread safety analysis
*/
#pragma once
#include <libcamera/base/private.h>
/*
* Enable thread safety attributes only with clang.
* The attributes can be safely erased when compiling with other compilers.
*/
#if defined(__clang__) && !defined(SWIG)
#define LIBCAMERA_TSA_ATTRIBUTE__(x) __attribute__((x))
#else
#define LIBCAMERA_TSA_ATTRIBUTE__(x) /* no-op */
#endif
/* See https://clang.llvm.org/docs/ThreadSafetyAnalysis.html for these usages. */
#define LIBCAMERA_TSA_CAPABILITY(x) \
LIBCAMERA_TSA_ATTRIBUTE__(capability(x))
#define LIBCAMERA_TSA_SCOPED_CAPABILITY \
LIBCAMERA_TSA_ATTRIBUTE__(scoped_lockable)
#define LIBCAMERA_TSA_GUARDED_BY(x) \
LIBCAMERA_TSA_ATTRIBUTE__(guarded_by(x))
#define LIBCAMERA_TSA_PT_GUARDED_BY(x) \
LIBCAMERA_TSA_ATTRIBUTE__(pt_guarded_by(x))
#define LIBCAMERA_TSA_ACQUIRED_BEFORE(...) \
LIBCAMERA_TSA_ATTRIBUTE__(acquired_before(__VA_ARGS__))
#define LIBCAMERA_TSA_ACQUIRED_AFTER(...) \
LIBCAMERA_TSA_ATTRIBUTE__(acquired_after(__VA_ARGS__))
#define LIBCAMERA_TSA_REQUIRES(...) \
LIBCAMERA_TSA_ATTRIBUTE__(requires_capability(__VA_ARGS__))
#define LIBCAMERA_TSA_REQUIRES_SHARED(...) \
LIBCAMERA_TSA_ATTRIBUTE__(requires_shared_capability(__VA_ARGS__))
#define LIBCAMERA_TSA_ACQUIRE(...) \
LIBCAMERA_TSA_ATTRIBUTE__(acquire_capability(__VA_ARGS__))
#define LIBCAMERA_TSA_ACQUIRE_SHARED(...) \
LIBCAMERA_TSA_ATTRIBUTE__(acquire_shared_capability(__VA_ARGS__))
#define LIBCAMERA_TSA_RELEASE(...) \
LIBCAMERA_TSA_ATTRIBUTE__(release_capability(__VA_ARGS__))
#define LIBCAMERA_TSA_RELEASE_SHARED(...) \
LIBCAMERA_TSA_ATTRIBUTE__(release_shared_capability(__VA_ARGS__))
#define LIBCAMERA_TSA_RELEASE_GENERIC(...) \
LIBCAMERA_TSA_ATTRIBUTE__(release_generic_capability(__VA_ARGS__))
#define LIBCAMERA_TSA_TRY_ACQUIRE(...) \
LIBCAMERA_TSA_ATTRIBUTE__(try_acquire_capability(__VA_ARGS__))
#define LIBCAMERA_TSA_TRY_ACQUIRE_SHARED(...) \
LIBCAMERA_TSA_ATTRIBUTE__(try_acquire_shared_capability(__VA_ARGS__))
#define LIBCAMERA_TSA_EXCLUDES(...) \
LIBCAMERA_TSA_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
#define LIBCAMERA_TSA_ASSERT_CAPABILITY(x) \
LIBCAMERA_TSA_ATTRIBUTE__(assert_capability(x))
#define LIBCAMERA_TSA_ASSERT_SHARED_CAPABILITY(x) \
LIBCAMERA_TSA_ATTRIBUTE__(assert_shared_capability(x))
#define LIBCAMERA_TSA_RETURN_CAPABILITY(x) \
LIBCAMERA_TSA_ATTRIBUTE__(lock_returned(x))
#define LIBCAMERA_TSA_NO_THREAD_SAFETY_ANALYSIS \
LIBCAMERA_TSA_ATTRIBUTE__(no_thread_safety_analysis)

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Generic timer
*/
#pragma once
#include <chrono>
#include <stdint.h>
#include <libcamera/base/private.h>
#include <libcamera/base/object.h>
#include <libcamera/base/signal.h>
namespace libcamera {
class Message;
class Timer : public Object
{
public:
Timer(Object *parent = nullptr);
~Timer();
void start(std::chrono::milliseconds duration);
void start(std::chrono::steady_clock::time_point deadline);
void stop();
bool isRunning() const;
std::chrono::steady_clock::time_point deadline() const { return deadline_; }
Signal<> timeout;
protected:
void message(Message *msg) override;
private:
void registerTimer();
void unregisterTimer();
bool running_;
std::chrono::steady_clock::time_point deadline_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* File descriptor wrapper that owns a file descriptor.
*/
#pragma once
#include <utility>
#include <libcamera/base/class.h>
#include <libcamera/base/compiler.h>
namespace libcamera {
class UniqueFD final
{
public:
UniqueFD()
: fd_(-1)
{
}
explicit UniqueFD(int fd)
: fd_(fd)
{
}
UniqueFD(UniqueFD &&other)
: fd_(other.release())
{
}
~UniqueFD()
{
reset();
}
UniqueFD &operator=(UniqueFD &&other)
{
reset(other.release());
return *this;
}
__nodiscard int release()
{
int fd = fd_;
fd_ = -1;
return fd;
}
void reset(int fd = -1);
void swap(UniqueFD &other)
{
std::swap(fd_, other.fd_);
}
int get() const { return fd_; }
bool isValid() const { return fd_ >= 0; }
private:
LIBCAMERA_DISABLE_COPY(UniqueFD)
int fd_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* Miscellaneous utility functions
*/
#pragma once
#include <algorithm>
#include <chrono>
#include <iterator>
#include <memory>
#include <ostream>
#include <sstream>
#include <string>
#include <string.h>
#include <sys/time.h>
#include <type_traits>
#include <utility>
#include <vector>
#include <libcamera/base/private.h>
#ifndef __DOXYGEN__
/* uClibc and uClibc-ng don't provide O_TMPFILE */
#ifndef O_TMPFILE
#define O_TMPFILE (020000000 | O_DIRECTORY)
#endif
#endif
namespace libcamera {
namespace utils {
const char *basename(const char *path);
char *secure_getenv(const char *name);
std::string dirname(const std::string &path);
template<typename T>
std::vector<typename T::key_type> map_keys(const T &map)
{
std::vector<typename T::key_type> keys;
std::transform(map.begin(), map.end(), std::back_inserter(keys),
[](const auto &value) { return value.first; });
return keys;
}
template<class InputIt1, class InputIt2>
unsigned int set_overlap(InputIt1 first1, InputIt1 last1,
InputIt2 first2, InputIt2 last2)
{
unsigned int count = 0;
while (first1 != last1 && first2 != last2) {
if (*first1 < *first2) {
++first1;
} else {
if (!(*first2 < *first1))
count++;
++first2;
}
}
return count;
}
using clock = std::chrono::steady_clock;
using duration = std::chrono::steady_clock::duration;
using time_point = std::chrono::steady_clock::time_point;
struct timespec duration_to_timespec(const duration &value);
std::string time_point_to_string(const time_point &time);
#ifndef __DOXYGEN__
struct _hex {
uint64_t v;
unsigned int w;
};
std::basic_ostream<char, std::char_traits<char>> &
operator<<(std::basic_ostream<char, std::char_traits<char>> &stream, const _hex &h);
#endif
template<typename T,
std::enable_if_t<std::is_integral<T>::value> * = nullptr>
_hex hex(T value, unsigned int width = 0);
#ifndef __DOXYGEN__
template<>
inline _hex hex<int8_t>(int8_t value, unsigned int width)
{
return { static_cast<uint64_t>(value), width ? width : 2 };
}
template<>
inline _hex hex<uint8_t>(uint8_t value, unsigned int width)
{
return { static_cast<uint64_t>(value), width ? width : 2 };
}
template<>
inline _hex hex<int16_t>(int16_t value, unsigned int width)
{
return { static_cast<uint64_t>(value), width ? width : 4 };
}
template<>
inline _hex hex<uint16_t>(uint16_t value, unsigned int width)
{
return { static_cast<uint64_t>(value), width ? width : 4 };
}
template<>
inline _hex hex<int32_t>(int32_t value, unsigned int width)
{
return { static_cast<uint64_t>(value), width ? width : 8 };
}
template<>
inline _hex hex<uint32_t>(uint32_t value, unsigned int width)
{
return { static_cast<uint64_t>(value), width ? width : 8 };
}
template<>
inline _hex hex<int64_t>(int64_t value, unsigned int width)
{
return { static_cast<uint64_t>(value), width ? width : 16 };
}
template<>
inline _hex hex<uint64_t>(uint64_t value, unsigned int width)
{
return { static_cast<uint64_t>(value), width ? width : 16 };
}
#endif
size_t strlcpy(char *dst, const char *src, size_t size);
#ifndef __DOXYGEN__
template<typename Container, typename UnaryOp>
std::string join(const Container &items, const std::string &sep, UnaryOp op)
{
std::ostringstream ss;
bool first = true;
for (typename Container::const_iterator it = std::begin(items);
it != std::end(items); ++it) {
if (!first)
ss << sep;
else
first = false;
ss << op(*it);
}
return ss.str();
}
template<typename Container>
std::string join(const Container &items, const std::string &sep)
{
std::ostringstream ss;
bool first = true;
for (typename Container::const_iterator it = std::begin(items);
it != std::end(items); ++it) {
if (!first)
ss << sep;
else
first = false;
ss << *it;
}
return ss.str();
}
#else
template<typename Container, typename UnaryOp>
std::string join(const Container &items, const std::string &sep, UnaryOp op = nullptr);
#endif
namespace details {
class StringSplitter
{
public:
StringSplitter(const std::string &str, const std::string &delim);
class iterator
{
public:
using difference_type = std::size_t;
using value_type = std::string;
using pointer = value_type *;
using reference = value_type &;
using iterator_category = std::input_iterator_tag;
iterator(const StringSplitter *ss, std::string::size_type pos);
iterator &operator++();
std::string operator*() const;
bool operator!=(const iterator &other) const;
private:
const StringSplitter *ss_;
std::string::size_type pos_;
std::string::size_type next_;
};
iterator begin() const;
iterator end() const;
private:
std::string str_;
std::string delim_;
};
} /* namespace details */
details::StringSplitter split(const std::string &str, const std::string &delim);
std::string toAscii(const std::string &str);
std::string libcameraBuildPath();
std::string libcameraSourcePath();
constexpr unsigned int alignDown(unsigned int value, unsigned int alignment)
{
return value / alignment * alignment;
}
constexpr unsigned int alignUp(unsigned int value, unsigned int alignment)
{
return (value + alignment - 1) / alignment * alignment;
}
namespace details {
template<typename T>
struct reverse_adapter {
T &iterable;
};
template<typename T>
auto begin(reverse_adapter<T> r)
{
return std::rbegin(r.iterable);
}
template<typename T>
auto end(reverse_adapter<T> r)
{
return std::rend(r.iterable);
}
} /* namespace details */
template<typename T>
details::reverse_adapter<T> reverse(T &&iterable)
{
return { iterable };
}
namespace details {
template<typename Base>
class enumerate_iterator
{
private:
using base_reference = typename std::iterator_traits<Base>::reference;
public:
using difference_type = typename std::iterator_traits<Base>::difference_type;
using value_type = std::pair<const std::size_t, base_reference>;
using pointer = value_type *;
using reference = value_type &;
using iterator_category = std::input_iterator_tag;
explicit enumerate_iterator(Base iter)
: current_(iter), pos_(0)
{
}
enumerate_iterator &operator++()
{
++current_;
++pos_;
return *this;
}
bool operator!=(const enumerate_iterator &other) const
{
return current_ != other.current_;
}
value_type operator*() const
{
return { pos_, *current_ };
}
private:
Base current_;
std::size_t pos_;
};
template<typename Base>
class enumerate_adapter
{
public:
using iterator = enumerate_iterator<Base>;
enumerate_adapter(Base begin, Base end)
: begin_(begin), end_(end)
{
}
iterator begin() const
{
return iterator{ begin_ };
}
iterator end() const
{
return iterator{ end_ };
}
private:
const Base begin_;
const Base end_;
};
} /* namespace details */
template<typename T>
auto enumerate(T &iterable) -> details::enumerate_adapter<decltype(iterable.begin())>
{
return { std::begin(iterable), std::end(iterable) };
}
#ifndef __DOXYGEN__
template<typename T, size_t N>
auto enumerate(T (&iterable)[N]) -> details::enumerate_adapter<T *>
{
return { std::begin(iterable), std::end(iterable) };
}
#endif
class Duration : public std::chrono::duration<double, std::nano>
{
using BaseDuration = std::chrono::duration<double, std::nano>;
public:
Duration() = default;
template<typename Rep>
constexpr explicit Duration(const Rep &r)
: BaseDuration(r)
{
}
template<typename Rep, typename Period>
constexpr Duration(const std::chrono::duration<Rep, Period> &d)
: BaseDuration(d)
{
}
template<typename Period>
double get() const
{
auto const c = std::chrono::duration_cast<std::chrono::duration<double, Period>>(*this);
return c.count();
}
explicit constexpr operator bool() const
{
return *this != BaseDuration::zero();
}
};
template<typename T>
decltype(auto) abs_diff(const T &a, const T &b)
{
if (a < b)
return b - a;
else
return a - b;
}
double strtod(const char *__restrict nptr, char **__restrict endptr);
template<class Enum>
constexpr std::underlying_type_t<Enum> to_underlying(Enum e) noexcept
{
return static_cast<std::underlying_type_t<Enum>>(e);
}
} /* namespace utils */
#ifndef __DOXYGEN__
template<class CharT, class Traits>
std::basic_ostream<CharT, Traits> &operator<<(std::basic_ostream<CharT, Traits> &os,
const utils::Duration &d);
#endif
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* Camera object interface
*/
#pragma once
#include <initializer_list>
#include <memory>
#include <optional>
#include <set>
#include <stdint.h>
#include <string>
#include <libcamera/base/class.h>
#include <libcamera/base/flags.h>
#include <libcamera/base/object.h>
#include <libcamera/base/signal.h>
#include <libcamera/controls.h>
#include <libcamera/geometry.h>
#include <libcamera/orientation.h>
#include <libcamera/request.h>
#include <libcamera/stream.h>
namespace libcamera {
class FrameBuffer;
class FrameBufferAllocator;
class PipelineHandler;
class Request;
class SensorConfiguration
{
public:
unsigned int bitDepth = 0;
Rectangle analogCrop;
struct {
unsigned int binX = 1;
unsigned int binY = 1;
} binning;
struct {
unsigned int xOddInc = 1;
unsigned int xEvenInc = 1;
unsigned int yOddInc = 1;
unsigned int yEvenInc = 1;
} skipping;
Size outputSize;
bool isValid() const;
};
class CameraConfiguration
{
public:
enum Status {
Valid,
Adjusted,
Invalid,
};
using iterator = std::vector<StreamConfiguration>::iterator;
using const_iterator = std::vector<StreamConfiguration>::const_iterator;
virtual ~CameraConfiguration();
void addConfiguration(const StreamConfiguration &cfg);
virtual Status validate() = 0;
StreamConfiguration &at(unsigned int index);
const StreamConfiguration &at(unsigned int index) const;
StreamConfiguration &operator[](unsigned int index)
{
return at(index);
}
const StreamConfiguration &operator[](unsigned int index) const
{
return at(index);
}
iterator begin();
const_iterator begin() const;
iterator end();
const_iterator end() const;
bool empty() const;
std::size_t size() const;
std::optional<SensorConfiguration> sensorConfig;
Orientation orientation;
protected:
CameraConfiguration();
enum class ColorSpaceFlag {
None,
StreamsShareColorSpace,
};
using ColorSpaceFlags = Flags<ColorSpaceFlag>;
Status validateColorSpaces(ColorSpaceFlags flags = ColorSpaceFlag::None);
std::vector<StreamConfiguration> config_;
};
class Camera final : public Object, public std::enable_shared_from_this<Camera>,
public Extensible
{
LIBCAMERA_DECLARE_PRIVATE()
public:
static std::shared_ptr<Camera> create(std::unique_ptr<Private> d,
const std::string &id,
const std::set<Stream *> &streams);
const std::string &id() const;
Signal<Request *, FrameBuffer *> bufferCompleted;
Signal<Request *> requestCompleted;
Signal<> disconnected;
int acquire();
int release();
const ControlInfoMap &controls() const;
const ControlList &properties() const;
const std::set<Stream *> &streams() const;
std::unique_ptr<CameraConfiguration>
generateConfiguration(Span<const StreamRole> roles = {});
std::unique_ptr<CameraConfiguration>
generateConfiguration(std::initializer_list<StreamRole> roles)
{
return generateConfiguration(Span(roles.begin(), roles.end()));
}
int configure(CameraConfiguration *config);
std::unique_ptr<Request> createRequest(uint64_t cookie = 0);
int queueRequest(Request *request);
int start(const ControlList *controls = nullptr);
int stop();
private:
LIBCAMERA_DISABLE_COPY(Camera)
Camera(std::unique_ptr<Private> d, const std::string &id,
const std::set<Stream *> &streams);
~Camera();
friend class PipelineHandler;
void disconnect();
void requestComplete(Request *request);
friend class FrameBufferAllocator;
int exportFrameBuffers(Stream *stream,
std::vector<std::unique_ptr<FrameBuffer>> *buffers);
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* Camera management
*/
#pragma once
#include <memory>
#include <string>
#include <sys/types.h>
#include <vector>
#include <libcamera/base/class.h>
#include <libcamera/base/object.h>
#include <libcamera/base/signal.h>
namespace libcamera {
class Camera;
class CameraManager : public Object, public Extensible
{
LIBCAMERA_DECLARE_PRIVATE()
public:
CameraManager();
~CameraManager();
int start();
void stop();
std::vector<std::shared_ptr<Camera>> cameras() const;
std::shared_ptr<Camera> get(const std::string &id);
static const std::string &version() { return version_; }
Signal<std::shared_ptr<Camera>> cameraAdded;
Signal<std::shared_ptr<Camera>> cameraRemoved;
private:
LIBCAMERA_DISABLE_COPY(CameraManager)
static const std::string version_;
static CameraManager *self_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Raspberry Pi Ltd
*
* color space definitions
*/
#pragma once
#include <optional>
#include <string>
namespace libcamera {
class PixelFormat;
class ColorSpace
{
public:
enum class Primaries {
Raw,
Smpte170m,
Rec709,
Rec2020,
};
enum class TransferFunction {
Linear,
Srgb,
Rec709,
};
enum class YcbcrEncoding {
None,
Rec601,
Rec709,
Rec2020,
};
enum class Range {
Full,
Limited,
};
constexpr ColorSpace(Primaries p, TransferFunction t, YcbcrEncoding e, Range r)
: primaries(p), transferFunction(t), ycbcrEncoding(e), range(r)
{
}
static const ColorSpace Raw;
static const ColorSpace Srgb;
static const ColorSpace Sycc;
static const ColorSpace Smpte170m;
static const ColorSpace Rec709;
static const ColorSpace Rec2020;
Primaries primaries;
TransferFunction transferFunction;
YcbcrEncoding ycbcrEncoding;
Range range;
std::string toString() const;
static std::string toString(const std::optional<ColorSpace> &colorSpace);
static std::optional<ColorSpace> fromString(const std::string &str);
bool adjust(PixelFormat format);
};
bool operator==(const ColorSpace &lhs, const ColorSpace &rhs);
static inline bool operator!=(const ColorSpace &lhs, const ColorSpace &rhs)
{
return !(lhs == rhs);
}
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Control ID list
*
* This file is auto-generated. Do not edit.
*/
#pragma once
#include <array>
#include <map>
#include <stdint.h>
#include <string>
#include <libcamera/controls.h>
namespace libcamera {
namespace controls {
enum {
${ids}
};
${controls}
extern const ControlIdMap controls;
${vendor_controls}
} /* namespace controls */
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Control handling
*/
#pragma once
#include <assert.h>
#include <optional>
#include <set>
#include <stdint.h>
#include <string>
#include <unordered_map>
#include <vector>
#include <libcamera/base/class.h>
#include <libcamera/base/span.h>
#include <libcamera/geometry.h>
namespace libcamera {
class ControlValidator;
enum ControlType {
ControlTypeNone,
ControlTypeBool,
ControlTypeByte,
ControlTypeInteger32,
ControlTypeInteger64,
ControlTypeFloat,
ControlTypeString,
ControlTypeRectangle,
ControlTypeSize,
};
namespace details {
template<typename T>
struct control_type {
};
template<>
struct control_type<void> {
static constexpr ControlType value = ControlTypeNone;
};
template<>
struct control_type<bool> {
static constexpr ControlType value = ControlTypeBool;
};
template<>
struct control_type<uint8_t> {
static constexpr ControlType value = ControlTypeByte;
};
template<>
struct control_type<int32_t> {
static constexpr ControlType value = ControlTypeInteger32;
};
template<>
struct control_type<int64_t> {
static constexpr ControlType value = ControlTypeInteger64;
};
template<>
struct control_type<float> {
static constexpr ControlType value = ControlTypeFloat;
};
template<>
struct control_type<std::string> {
static constexpr ControlType value = ControlTypeString;
};
template<>
struct control_type<Rectangle> {
static constexpr ControlType value = ControlTypeRectangle;
};
template<>
struct control_type<Size> {
static constexpr ControlType value = ControlTypeSize;
};
template<typename T, std::size_t N>
struct control_type<Span<T, N>> : public control_type<std::remove_cv_t<T>> {
};
} /* namespace details */
class ControlValue
{
public:
ControlValue();
#ifndef __DOXYGEN__
template<typename T, std::enable_if_t<!details::is_span<T>::value &&
details::control_type<T>::value &&
!std::is_same<std::string, std::remove_cv_t<T>>::value,
std::nullptr_t> = nullptr>
ControlValue(const T &value)
: type_(ControlTypeNone), numElements_(0)
{
set(details::control_type<std::remove_cv_t<T>>::value, false,
&value, 1, sizeof(T));
}
template<typename T, std::enable_if_t<details::is_span<T>::value ||
std::is_same<std::string, std::remove_cv_t<T>>::value,
std::nullptr_t> = nullptr>
#else
template<typename T>
#endif
ControlValue(const T &value)
: type_(ControlTypeNone), numElements_(0)
{
set(details::control_type<std::remove_cv_t<T>>::value, true,
value.data(), value.size(), sizeof(typename T::value_type));
}
~ControlValue();
ControlValue(const ControlValue &other);
ControlValue &operator=(const ControlValue &other);
ControlType type() const { return type_; }
bool isNone() const { return type_ == ControlTypeNone; }
bool isArray() const { return isArray_; }
std::size_t numElements() const { return numElements_; }
Span<const uint8_t> data() const;
Span<uint8_t> data();
std::string toString() const;
bool operator==(const ControlValue &other) const;
bool operator!=(const ControlValue &other) const
{
return !(*this == other);
}
#ifndef __DOXYGEN__
template<typename T, std::enable_if_t<!details::is_span<T>::value &&
!std::is_same<std::string, std::remove_cv_t<T>>::value,
std::nullptr_t> = nullptr>
T get() const
{
assert(type_ == details::control_type<std::remove_cv_t<T>>::value);
assert(!isArray_);
return *reinterpret_cast<const T *>(data().data());
}
template<typename T, std::enable_if_t<details::is_span<T>::value ||
std::is_same<std::string, std::remove_cv_t<T>>::value,
std::nullptr_t> = nullptr>
#else
template<typename T>
#endif
T get() const
{
assert(type_ == details::control_type<std::remove_cv_t<T>>::value);
assert(isArray_);
using V = typename T::value_type;
const V *value = reinterpret_cast<const V *>(data().data());
return T{ value, numElements_ };
}
#ifndef __DOXYGEN__
template<typename T, std::enable_if_t<!details::is_span<T>::value &&
!std::is_same<std::string, std::remove_cv_t<T>>::value,
std::nullptr_t> = nullptr>
void set(const T &value)
{
set(details::control_type<std::remove_cv_t<T>>::value, false,
reinterpret_cast<const void *>(&value), 1, sizeof(T));
}
template<typename T, std::enable_if_t<details::is_span<T>::value ||
std::is_same<std::string, std::remove_cv_t<T>>::value,
std::nullptr_t> = nullptr>
#else
template<typename T>
#endif
void set(const T &value)
{
set(details::control_type<std::remove_cv_t<T>>::value, true,
value.data(), value.size(), sizeof(typename T::value_type));
}
void reserve(ControlType type, bool isArray = false,
std::size_t numElements = 1);
private:
ControlType type_ : 8;
bool isArray_;
std::size_t numElements_ : 32;
union {
uint64_t value_;
void *storage_;
};
void release();
void set(ControlType type, bool isArray, const void *data,
std::size_t numElements, std::size_t elementSize);
};
class ControlId
{
public:
ControlId(unsigned int id, const std::string &name, ControlType type)
: id_(id), name_(name), type_(type)
{
}
unsigned int id() const { return id_; }
const std::string &name() const { return name_; }
ControlType type() const { return type_; }
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(ControlId)
unsigned int id_;
std::string name_;
ControlType type_;
};
static inline bool operator==(unsigned int lhs, const ControlId &rhs)
{
return lhs == rhs.id();
}
static inline bool operator!=(unsigned int lhs, const ControlId &rhs)
{
return !(lhs == rhs);
}
static inline bool operator==(const ControlId &lhs, unsigned int rhs)
{
return lhs.id() == rhs;
}
static inline bool operator!=(const ControlId &lhs, unsigned int rhs)
{
return !(lhs == rhs);
}
template<typename T>
class Control : public ControlId
{
public:
using type = T;
Control(unsigned int id, const char *name)
: ControlId(id, name, details::control_type<std::remove_cv_t<T>>::value)
{
}
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(Control)
};
class ControlInfo
{
public:
explicit ControlInfo(const ControlValue &min = {},
const ControlValue &max = {},
const ControlValue &def = {});
explicit ControlInfo(Span<const ControlValue> values,
const ControlValue &def = {});
explicit ControlInfo(std::set<bool> values, bool def);
explicit ControlInfo(bool value);
const ControlValue &min() const { return min_; }
const ControlValue &max() const { return max_; }
const ControlValue &def() const { return def_; }
const std::vector<ControlValue> &values() const { return values_; }
std::string toString() const;
bool operator==(const ControlInfo &other) const
{
return min_ == other.min_ && max_ == other.max_;
}
bool operator!=(const ControlInfo &other) const
{
return !(*this == other);
}
private:
ControlValue min_;
ControlValue max_;
ControlValue def_;
std::vector<ControlValue> values_;
};
using ControlIdMap = std::unordered_map<unsigned int, const ControlId *>;
class ControlInfoMap : private std::unordered_map<const ControlId *, ControlInfo>
{
public:
using Map = std::unordered_map<const ControlId *, ControlInfo>;
ControlInfoMap() = default;
ControlInfoMap(const ControlInfoMap &other) = default;
ControlInfoMap(std::initializer_list<Map::value_type> init,
const ControlIdMap &idmap);
ControlInfoMap(Map &&info, const ControlIdMap &idmap);
ControlInfoMap &operator=(const ControlInfoMap &other) = default;
using Map::key_type;
using Map::mapped_type;
using Map::value_type;
using Map::size_type;
using Map::iterator;
using Map::const_iterator;
using Map::begin;
using Map::cbegin;
using Map::end;
using Map::cend;
using Map::at;
using Map::empty;
using Map::size;
using Map::count;
using Map::find;
mapped_type &at(unsigned int key);
const mapped_type &at(unsigned int key) const;
size_type count(unsigned int key) const;
iterator find(unsigned int key);
const_iterator find(unsigned int key) const;
const ControlIdMap &idmap() const { return *idmap_; }
private:
bool validate();
const ControlIdMap *idmap_ = nullptr;
};
class ControlList
{
private:
using ControlListMap = std::unordered_map<unsigned int, ControlValue>;
public:
enum class MergePolicy {
KeepExisting = 0,
OverwriteExisting,
};
ControlList();
ControlList(const ControlIdMap &idmap, const ControlValidator *validator = nullptr);
ControlList(const ControlInfoMap &infoMap, const ControlValidator *validator = nullptr);
using iterator = ControlListMap::iterator;
using const_iterator = ControlListMap::const_iterator;
iterator begin() { return controls_.begin(); }
iterator end() { return controls_.end(); }
const_iterator begin() const { return controls_.begin(); }
const_iterator end() const { return controls_.end(); }
bool empty() const { return controls_.empty(); }
std::size_t size() const { return controls_.size(); }
void clear() { controls_.clear(); }
void merge(const ControlList &source, MergePolicy policy = MergePolicy::KeepExisting);
bool contains(unsigned int id) const;
template<typename T>
std::optional<T> get(const Control<T> &ctrl) const
{
const auto entry = controls_.find(ctrl.id());
if (entry == controls_.end())
return std::nullopt;
const ControlValue &val = entry->second;
return val.get<T>();
}
template<typename T, typename V>
void set(const Control<T> &ctrl, const V &value)
{
ControlValue *val = find(ctrl.id());
if (!val)
return;
val->set<T>(value);
}
template<typename T, typename V, size_t Size>
void set(const Control<Span<T, Size>> &ctrl, const std::initializer_list<V> &value)
{
ControlValue *val = find(ctrl.id());
if (!val)
return;
val->set(Span<const typename std::remove_cv_t<V>, Size>{ value.begin(), value.size() });
}
const ControlValue &get(unsigned int id) const;
void set(unsigned int id, const ControlValue &value);
const ControlInfoMap *infoMap() const { return infoMap_; }
const ControlIdMap *idMap() const { return idmap_; }
private:
const ControlValue *find(unsigned int id) const;
ControlValue *find(unsigned int id);
const ControlValidator *validator_;
const ControlIdMap *idmap_;
const ControlInfoMap *infoMap_;
ControlListMap controls_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* Synchronization fence
*/
#pragma once
#include <libcamera/base/class.h>
#include <libcamera/base/unique_fd.h>
namespace libcamera {
class Fence
{
public:
Fence(UniqueFD fd);
bool isValid() const { return fd_.isValid(); }
const UniqueFD &fd() const { return fd_; }
UniqueFD release() { return std::move(fd_); }
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(Fence)
UniqueFD fd_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* Formats
*
* This file is auto-generated. Do not edit.
*/
#pragma once
#include <stdint.h>
#include <libcamera/pixel_format.h>
namespace libcamera {
namespace formats {
namespace {
constexpr uint32_t __fourcc(char a, char b, char c, char d)
{
return (static_cast<uint32_t>(a) << 0) |
(static_cast<uint32_t>(b) << 8) |
(static_cast<uint32_t>(c) << 16) |
(static_cast<uint32_t>(d) << 24);
}
constexpr uint64_t __mod(unsigned int vendor, unsigned int mod)
{
return (static_cast<uint64_t>(vendor) << 56) |
(static_cast<uint64_t>(mod) << 0);
}
} /* namespace */
${formats}
} /* namespace formats */
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Frame buffer handling
*/
#pragma once
#include <assert.h>
#include <limits>
#include <memory>
#include <stdint.h>
#include <vector>
#include <libcamera/base/class.h>
#include <libcamera/base/shared_fd.h>
#include <libcamera/base/span.h>
namespace libcamera {
class Fence;
class Request;
struct FrameMetadata {
enum Status {
FrameSuccess,
FrameError,
FrameCancelled,
};
struct Plane {
unsigned int bytesused;
};
Status status;
unsigned int sequence;
uint64_t timestamp;
Span<Plane> planes() { return planes_; }
Span<const Plane> planes() const { return planes_; }
private:
friend class FrameBuffer;
std::vector<Plane> planes_;
};
class FrameBuffer : public Extensible
{
LIBCAMERA_DECLARE_PRIVATE()
public:
struct Plane {
static constexpr unsigned int kInvalidOffset = std::numeric_limits<unsigned int>::max();
SharedFD fd;
unsigned int offset = kInvalidOffset;
unsigned int length;
};
FrameBuffer(const std::vector<Plane> &planes, unsigned int cookie = 0);
FrameBuffer(std::unique_ptr<Private> d);
virtual ~FrameBuffer() {}
const std::vector<Plane> &planes() const;
Request *request() const;
const FrameMetadata &metadata() const;
uint64_t cookie() const;
void setCookie(uint64_t cookie);
std::unique_ptr<Fence> releaseFence();
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(FrameBuffer)
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* FrameBuffer allocator
*/
#pragma once
#include <map>
#include <memory>
#include <vector>
#include <libcamera/base/class.h>
namespace libcamera {
class Camera;
class FrameBuffer;
class Stream;
class FrameBufferAllocator
{
public:
FrameBufferAllocator(std::shared_ptr<Camera> camera);
~FrameBufferAllocator();
int allocate(Stream *stream);
int free(Stream *stream);
bool allocated() const { return !buffers_.empty(); }
const std::vector<std::unique_ptr<FrameBuffer>> &buffers(Stream *stream) const;
private:
LIBCAMERA_DISABLE_COPY(FrameBufferAllocator)
std::shared_ptr<Camera> camera_;
std::map<Stream *, std::vector<std::unique_ptr<FrameBuffer>>> buffers_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Geometry-related classes
*/
#pragma once
#include <algorithm>
#include <ostream>
#include <string>
#include <libcamera/base/compiler.h>
namespace libcamera {
class Rectangle;
class Point
{
public:
constexpr Point()
: x(0), y(0)
{
}
constexpr Point(int xpos, int ypos)
: x(xpos), y(ypos)
{
}
int x;
int y;
const std::string toString() const;
constexpr Point operator-() const
{
return { -x, -y };
}
};
bool operator==(const Point &lhs, const Point &rhs);
static inline bool operator!=(const Point &lhs, const Point &rhs)
{
return !(lhs == rhs);
}
std::ostream &operator<<(std::ostream &out, const Point &p);
class Size
{
public:
constexpr Size()
: Size(0, 0)
{
}
constexpr Size(unsigned int w, unsigned int h)
: width(w), height(h)
{
}
unsigned int width;
unsigned int height;
bool isNull() const { return !width && !height; }
const std::string toString() const;
Size &alignDownTo(unsigned int hAlignment, unsigned int vAlignment)
{
width = width / hAlignment * hAlignment;
height = height / vAlignment * vAlignment;
return *this;
}
Size &alignUpTo(unsigned int hAlignment, unsigned int vAlignment)
{
width = (width + hAlignment - 1) / hAlignment * hAlignment;
height = (height + vAlignment - 1) / vAlignment * vAlignment;
return *this;
}
Size &boundTo(const Size &bound)
{
width = std::min(width, bound.width);
height = std::min(height, bound.height);
return *this;
}
Size &expandTo(const Size &expand)
{
width = std::max(width, expand.width);
height = std::max(height, expand.height);
return *this;
}
Size &growBy(const Size &margins)
{
width += margins.width;
height += margins.height;
return *this;
}
Size &shrinkBy(const Size &margins)
{
width = width > margins.width ? width - margins.width : 0;
height = height > margins.height ? height - margins.height : 0;
return *this;
}
__nodiscard constexpr Size alignedDownTo(unsigned int hAlignment,
unsigned int vAlignment) const
{
return {
width / hAlignment * hAlignment,
height / vAlignment * vAlignment
};
}
__nodiscard constexpr Size alignedUpTo(unsigned int hAlignment,
unsigned int vAlignment) const
{
return {
(width + hAlignment - 1) / hAlignment * hAlignment,
(height + vAlignment - 1) / vAlignment * vAlignment
};
}
__nodiscard constexpr Size boundedTo(const Size &bound) const
{
return {
std::min(width, bound.width),
std::min(height, bound.height)
};
}
__nodiscard constexpr Size expandedTo(const Size &expand) const
{
return {
std::max(width, expand.width),
std::max(height, expand.height)
};
}
__nodiscard constexpr Size grownBy(const Size &margins) const
{
return {
width + margins.width,
height + margins.height
};
}
__nodiscard constexpr Size shrunkBy(const Size &margins) const
{
return {
width > margins.width ? width - margins.width : 0,
height > margins.height ? height - margins.height : 0
};
}
__nodiscard Size boundedToAspectRatio(const Size &ratio) const;
__nodiscard Size expandedToAspectRatio(const Size &ratio) const;
__nodiscard Rectangle centeredTo(const Point &center) const;
Size operator*(float factor) const;
Size operator/(float factor) const;
Size &operator*=(float factor);
Size &operator/=(float factor);
};
bool operator==(const Size &lhs, const Size &rhs);
bool operator<(const Size &lhs, const Size &rhs);
static inline bool operator!=(const Size &lhs, const Size &rhs)
{
return !(lhs == rhs);
}
static inline bool operator<=(const Size &lhs, const Size &rhs)
{
return lhs < rhs || lhs == rhs;
}
static inline bool operator>(const Size &lhs, const Size &rhs)
{
return !(lhs <= rhs);
}
static inline bool operator>=(const Size &lhs, const Size &rhs)
{
return !(lhs < rhs);
}
std::ostream &operator<<(std::ostream &out, const Size &s);
class SizeRange
{
public:
SizeRange()
: hStep(0), vStep(0)
{
}
SizeRange(const Size &size)
: min(size), max(size), hStep(1), vStep(1)
{
}
SizeRange(const Size &minSize, const Size &maxSize)
: min(minSize), max(maxSize), hStep(1), vStep(1)
{
}
SizeRange(const Size &minSize, const Size &maxSize,
unsigned int hstep, unsigned int vstep)
: min(minSize), max(maxSize), hStep(hstep), vStep(vstep)
{
}
bool contains(const Size &size) const;
std::string toString() const;
Size min;
Size max;
unsigned int hStep;
unsigned int vStep;
};
bool operator==(const SizeRange &lhs, const SizeRange &rhs);
static inline bool operator!=(const SizeRange &lhs, const SizeRange &rhs)
{
return !(lhs == rhs);
}
std::ostream &operator<<(std::ostream &out, const SizeRange &sr);
class Rectangle
{
public:
constexpr Rectangle()
: Rectangle(0, 0, 0, 0)
{
}
constexpr Rectangle(int xpos, int ypos, const Size &size)
: x(xpos), y(ypos), width(size.width), height(size.height)
{
}
constexpr Rectangle(int xpos, int ypos, unsigned int w, unsigned int h)
: x(xpos), y(ypos), width(w), height(h)
{
}
constexpr explicit Rectangle(const Size &size)
: x(0), y(0), width(size.width), height(size.height)
{
}
int x;
int y;
unsigned int width;
unsigned int height;
bool isNull() const { return !width && !height; }
const std::string toString() const;
Point center() const;
Size size() const
{
return { width, height };
}
Point topLeft() const
{
return { x, y };
}
Rectangle &scaleBy(const Size &numerator, const Size &denominator);
Rectangle &translateBy(const Point &point);
__nodiscard Rectangle boundedTo(const Rectangle &bound) const;
__nodiscard Rectangle enclosedIn(const Rectangle &boundary) const;
__nodiscard Rectangle scaledBy(const Size &numerator,
const Size &denominator) const;
__nodiscard Rectangle translatedBy(const Point &point) const;
};
bool operator==(const Rectangle &lhs, const Rectangle &rhs);
static inline bool operator!=(const Rectangle &lhs, const Rectangle &rhs)
{
return !(lhs == rhs);
}
std::ostream &operator<<(std::ostream &out, const Rectangle &r);
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Raspberry Pi Ltd
*
* Bayer Pixel Format
*/
#pragma once
#include <ostream>
#include <stdint.h>
#include <string>
#include <libcamera/pixel_format.h>
#include "libcamera/internal/v4l2_pixelformat.h"
namespace libcamera {
enum class Transform;
class BayerFormat
{
public:
enum Order : uint8_t {
BGGR = 0,
GBRG = 1,
GRBG = 2,
RGGB = 3,
MONO = 4
};
enum class Packing : uint16_t {
None = 0,
CSI2 = 1,
IPU3 = 2,
PISP1 = 3,
PISP2 = 4,
};
constexpr BayerFormat()
: order(Order::BGGR), bitDepth(0), packing(Packing::None)
{
}
constexpr BayerFormat(Order o, uint8_t b, Packing p)
: order(o), bitDepth(b), packing(p)
{
}
static const BayerFormat &fromMbusCode(unsigned int mbusCode);
bool isValid() const { return bitDepth != 0; }
std::string toString() const;
V4L2PixelFormat toV4L2PixelFormat() const;
static BayerFormat fromV4L2PixelFormat(V4L2PixelFormat v4l2Format);
PixelFormat toPixelFormat() const;
static BayerFormat fromPixelFormat(PixelFormat format);
BayerFormat transform(Transform t) const;
Order order;
uint8_t bitDepth;
Packing packing;
};
bool operator==(const BayerFormat &lhs, const BayerFormat &rhs);
static inline bool operator!=(const BayerFormat &lhs, const BayerFormat &rhs)
{
return !(lhs == rhs);
}
std::ostream &operator<<(std::ostream &out, const BayerFormat &f);
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Byte stream buffer
*/
#pragma once
#include <stddef.h>
#include <stdint.h>
#include <type_traits>
#include <libcamera/base/class.h>
#include <libcamera/base/span.h>
namespace libcamera {
class ByteStreamBuffer
{
public:
ByteStreamBuffer(const uint8_t *base, size_t size);
ByteStreamBuffer(uint8_t *base, size_t size);
ByteStreamBuffer(ByteStreamBuffer &&other);
ByteStreamBuffer &operator=(ByteStreamBuffer &&other);
const uint8_t *base() const { return base_; }
uint32_t offset() const { return (write_ ? write_ : read_) - base_; }
size_t size() const { return size_; }
bool overflow() const { return overflow_; }
ByteStreamBuffer carveOut(size_t size);
int skip(size_t size);
template<typename T>
int read(T *t)
{
return read(reinterpret_cast<uint8_t *>(t), sizeof(*t));
}
template<typename T>
int read(const Span<T> &data)
{
return read(reinterpret_cast<uint8_t *>(data.data()),
data.size_bytes());
}
template<typename T>
const std::remove_reference_t<T> *read(size_t count = 1)
{
using return_type = const std::remove_reference_t<T> *;
return reinterpret_cast<return_type>(read(sizeof(T), count));
}
template<typename T>
int write(const T *t)
{
return write(reinterpret_cast<const uint8_t *>(t), sizeof(*t));
}
template<typename T>
int write(const Span<T> &data)
{
return write(reinterpret_cast<const uint8_t *>(data.data()),
data.size_bytes());
}
private:
LIBCAMERA_DISABLE_COPY(ByteStreamBuffer)
void setOverflow();
int read(uint8_t *data, size_t size);
const uint8_t *read(size_t size, size_t count);
int write(const uint8_t *data, size_t size);
ByteStreamBuffer *parent_;
const uint8_t *base_;
size_t size_;
bool overflow_;
const uint8_t *read_;
uint8_t *write_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* Camera private data
*/
#pragma once
#include <atomic>
#include <list>
#include <memory>
#include <set>
#include <string>
#include <libcamera/base/class.h>
#include <libcamera/camera.h>
namespace libcamera {
class CameraControlValidator;
class PipelineHandler;
class Stream;
class Camera::Private : public Extensible::Private
{
LIBCAMERA_DECLARE_PUBLIC(Camera)
public:
Private(PipelineHandler *pipe);
~Private();
PipelineHandler *pipe() { return pipe_.get(); }
std::list<Request *> queuedRequests_;
ControlInfoMap controlInfo_;
ControlList properties_;
uint32_t requestSequence_;
const CameraControlValidator *validator() const { return validator_.get(); }
private:
enum State {
CameraAvailable,
CameraAcquired,
CameraConfigured,
CameraStopping,
CameraRunning,
};
bool isAcquired() const;
bool isRunning() const;
int isAccessAllowed(State state, bool allowDisconnected = false,
const char *from = __builtin_FUNCTION()) const;
int isAccessAllowed(State low, State high,
bool allowDisconnected = false,
const char *from = __builtin_FUNCTION()) const;
void disconnect();
void setState(State state);
std::shared_ptr<PipelineHandler> pipe_;
std::string id_;
std::set<Stream *> streams_;
std::set<const Stream *> activeStreams_;
bool disconnected_;
std::atomic<State> state_;
std::unique_ptr<CameraControlValidator> validator_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Camera controls
*/
#pragma once
#include "libcamera/internal/control_validator.h"
namespace libcamera {
class Camera;
class CameraControlValidator final : public ControlValidator
{
public:
CameraControlValidator(Camera *camera);
const std::string &name() const override;
bool validate(unsigned int id) const override;
private:
Camera *camera_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* A camera lens controller
*/
#pragma once
#include <memory>
#include <string>
#include <libcamera/base/class.h>
#include <libcamera/base/log.h>
#include <libcamera/controls.h>
namespace libcamera {
class MediaEntity;
class V4L2Subdevice;
class CameraLens : protected Loggable
{
public:
explicit CameraLens(const MediaEntity *entity);
~CameraLens();
int init();
int setFocusPosition(int32_t position);
const std::string &model() const { return model_; }
const ControlInfoMap &controls() const;
protected:
std::string logPrefix() const override;
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(CameraLens)
int validateLensDriver();
const MediaEntity *entity_;
std::unique_ptr<V4L2Subdevice> subdev_;
std::string model_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2023, Ideas on Board Oy.
*
* Camera manager private data
*/
#pragma once
#include <libcamera/camera_manager.h>
#include <map>
#include <memory>
#include <sys/types.h>
#include <vector>
#include <libcamera/base/class.h>
#include <libcamera/base/mutex.h>
#include <libcamera/base/thread.h>
#include <libcamera/base/thread_annotations.h>
#include "libcamera/internal/ipa_manager.h"
#include "libcamera/internal/process.h"
namespace libcamera {
class Camera;
class DeviceEnumerator;
class CameraManager::Private : public Extensible::Private, public Thread
{
LIBCAMERA_DECLARE_PUBLIC(CameraManager)
public:
Private();
int start();
void addCamera(std::shared_ptr<Camera> camera) LIBCAMERA_TSA_EXCLUDES(mutex_);
void removeCamera(std::shared_ptr<Camera> camera) LIBCAMERA_TSA_EXCLUDES(mutex_);
protected:
void run() override;
private:
int init();
void createPipelineHandlers();
void pipelineFactoryMatch(const PipelineHandlerFactoryBase *factory);
void cleanup() LIBCAMERA_TSA_EXCLUDES(mutex_);
/*
* This mutex protects
*
* - initialized_ and status_ during initialization
* - cameras_ after initialization
*/
mutable Mutex mutex_;
std::vector<std::shared_ptr<Camera>> cameras_ LIBCAMERA_TSA_GUARDED_BY(mutex_);
ConditionVariable cv_;
bool initialized_ LIBCAMERA_TSA_GUARDED_BY(mutex_);
int status_ LIBCAMERA_TSA_GUARDED_BY(mutex_);
std::unique_ptr<DeviceEnumerator> enumerator_;
IPAManager ipaManager_;
ProcessManager processManager_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* A camera sensor
*/
#pragma once
#include <memory>
#include <string>
#include <vector>
#include <libcamera/base/class.h>
#include <libcamera/base/log.h>
#include <libcamera/control_ids.h>
#include <libcamera/controls.h>
#include <libcamera/geometry.h>
#include <libcamera/orientation.h>
#include <libcamera/transform.h>
#include <libcamera/ipa/core_ipa_interface.h>
#include "libcamera/internal/bayer_format.h"
#include "libcamera/internal/formats.h"
#include "libcamera/internal/v4l2_subdevice.h"
namespace libcamera {
class CameraLens;
class MediaEntity;
class SensorConfiguration;
struct CameraSensorProperties;
enum class Orientation;
class CameraSensor : protected Loggable
{
public:
explicit CameraSensor(const MediaEntity *entity);
~CameraSensor();
int init();
const std::string &model() const { return model_; }
const std::string &id() const { return id_; }
const MediaEntity *entity() const { return entity_; }
V4L2Subdevice *device() { return subdev_.get(); }
CameraLens *focusLens() { return focusLens_.get(); }
const std::vector<unsigned int> &mbusCodes() const { return mbusCodes_; }
std::vector<Size> sizes(unsigned int mbusCode) const;
Size resolution() const;
V4L2SubdeviceFormat getFormat(const std::vector<unsigned int> &mbusCodes,
const Size &size) const;
int setFormat(V4L2SubdeviceFormat *format,
Transform transform = Transform::Identity);
int tryFormat(V4L2SubdeviceFormat *format) const;
int applyConfiguration(const SensorConfiguration &config,
Transform transform = Transform::Identity,
V4L2SubdeviceFormat *sensorFormat = nullptr);
const ControlList &properties() const { return properties_; }
int sensorInfo(IPACameraSensorInfo *info) const;
Transform computeTransform(Orientation *orientation) const;
BayerFormat::Order bayerOrder(Transform t) const;
const ControlInfoMap &controls() const;
ControlList getControls(const std::vector<uint32_t> &ids);
int setControls(ControlList *ctrls);
const std::vector<controls::draft::TestPatternModeEnum> &testPatternModes() const
{
return testPatternModes_;
}
int setTestPatternMode(controls::draft::TestPatternModeEnum mode);
protected:
std::string logPrefix() const override;
private:
LIBCAMERA_DISABLE_COPY(CameraSensor)
int generateId();
int validateSensorDriver();
void initVimcDefaultProperties();
void initStaticProperties();
void initTestPatternModes();
int initProperties();
int discoverAncillaryDevices();
int applyTestPatternMode(controls::draft::TestPatternModeEnum mode);
const MediaEntity *entity_;
std::unique_ptr<V4L2Subdevice> subdev_;
unsigned int pad_;
const CameraSensorProperties *staticProps_;
std::string model_;
std::string id_;
V4L2Subdevice::Formats formats_;
std::vector<unsigned int> mbusCodes_;
std::vector<Size> sizes_;
std::vector<controls::draft::TestPatternModeEnum> testPatternModes_;
controls::draft::TestPatternModeEnum testPatternMode_;
Size pixelArraySize_;
Rectangle activeArea_;
const BayerFormat *bayerFormat_;
bool supportFlips_;
bool flipsAlterBayerOrder_;
Orientation mountingOrientation_;
ControlList properties_;
std::unique_ptr<CameraLens> focusLens_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* Database of camera sensor properties
*/
#pragma once
#include <map>
#include <string>
#include <libcamera/control_ids.h>
#include <libcamera/geometry.h>
namespace libcamera {
struct CameraSensorProperties {
static const CameraSensorProperties *get(const std::string &sensor);
Size unitCellSize;
std::map<controls::draft::TestPatternModeEnum, int32_t> testPatternModes;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Control (de)serializer
*/
#pragma once
#include <map>
#include <memory>
#include <vector>
#include <libcamera/controls.h>
namespace libcamera {
class ByteStreamBuffer;
class ControlSerializer
{
public:
enum class Role {
Proxy,
Worker
};
ControlSerializer(Role role);
void reset();
static size_t binarySize(const ControlInfoMap &infoMap);
static size_t binarySize(const ControlList &list);
int serialize(const ControlInfoMap &infoMap, ByteStreamBuffer &buffer);
int serialize(const ControlList &list, ByteStreamBuffer &buffer);
template<typename T>
T deserialize(ByteStreamBuffer &buffer);
bool isCached(const ControlInfoMap &infoMap);
private:
static size_t binarySize(const ControlValue &value);
static size_t binarySize(const ControlInfo &info);
static void store(const ControlValue &value, ByteStreamBuffer &buffer);
static void store(const ControlInfo &info, ByteStreamBuffer &buffer);
ControlValue loadControlValue(ByteStreamBuffer &buffer,
bool isArray = false, unsigned int count = 1);
ControlInfo loadControlInfo(ByteStreamBuffer &buffer);
unsigned int serial_;
unsigned int serialSeed_;
std::vector<std::unique_ptr<ControlId>> controlIds_;
std::vector<std::unique_ptr<ControlIdMap>> controlIdMaps_;
std::map<unsigned int, ControlInfoMap> infoMaps_;
std::map<const ControlInfoMap *, unsigned int> infoMapHandles_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Control validator
*/
#pragma once
#include <string>
namespace libcamera {
class ControlId;
class ControlValidator
{
public:
virtual ~ControlValidator() = default;
virtual const std::string &name() const = 0;
virtual bool validate(unsigned int id) const = 0;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Laurent Pinchart
* Copyright 2022 NXP
*
* Generic format converter interface
*/
#pragma once
#include <functional>
#include <initializer_list>
#include <map>
#include <memory>
#include <string>
#include <tuple>
#include <vector>
#include <libcamera/base/class.h>
#include <libcamera/base/signal.h>
#include <libcamera/geometry.h>
namespace libcamera {
class FrameBuffer;
class MediaDevice;
class PixelFormat;
class Stream;
struct StreamConfiguration;
class Converter
{
public:
Converter(MediaDevice *media);
virtual ~Converter();
virtual int loadConfiguration(const std::string &filename) = 0;
virtual bool isValid() const = 0;
virtual std::vector<PixelFormat> formats(PixelFormat input) = 0;
virtual SizeRange sizes(const Size &input) = 0;
virtual std::tuple<unsigned int, unsigned int>
strideAndFrameSize(const PixelFormat &pixelFormat, const Size &size) = 0;
virtual int configure(const StreamConfiguration &inputCfg,
const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfgs) = 0;
virtual int exportBuffers(const Stream *stream, unsigned int count,
std::vector<std::unique_ptr<FrameBuffer>> *buffers) = 0;
virtual int start() = 0;
virtual void stop() = 0;
virtual int queueBuffers(FrameBuffer *input,
const std::map<const Stream *, FrameBuffer *> &outputs) = 0;
Signal<FrameBuffer *> inputBufferReady;
Signal<FrameBuffer *> outputBufferReady;
const std::string &deviceNode() const { return deviceNode_; }
private:
std::string deviceNode_;
};
class ConverterFactoryBase
{
public:
ConverterFactoryBase(const std::string name, std::initializer_list<std::string> compatibles);
virtual ~ConverterFactoryBase() = default;
const std::vector<std::string> &compatibles() const { return compatibles_; }
static std::unique_ptr<Converter> create(MediaDevice *media);
static std::vector<ConverterFactoryBase *> &factories();
static std::vector<std::string> names();
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(ConverterFactoryBase)
static void registerType(ConverterFactoryBase *factory);
virtual std::unique_ptr<Converter> createInstance(MediaDevice *media) const = 0;
std::string name_;
std::vector<std::string> compatibles_;
};
template<typename _Converter>
class ConverterFactory : public ConverterFactoryBase
{
public:
ConverterFactory(const char *name, std::initializer_list<std::string> compatibles)
: ConverterFactoryBase(name, compatibles)
{
}
std::unique_ptr<Converter> createInstance(MediaDevice *media) const override
{
return std::make_unique<_Converter>(media);
}
};
#define REGISTER_CONVERTER(name, converter, compatibles) \
static ConverterFactory<converter> global_##converter##Factory(name, compatibles);
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Laurent Pinchart
* Copyright 2022 NXP
*
* V4l2 M2M Format converter interface
*/
#pragma once
#include <functional>
#include <map>
#include <memory>
#include <string>
#include <tuple>
#include <vector>
#include <libcamera/base/log.h>
#include <libcamera/base/signal.h>
#include <libcamera/pixel_format.h>
#include "libcamera/internal/converter.h"
namespace libcamera {
class FrameBuffer;
class MediaDevice;
class Size;
class SizeRange;
class Stream;
struct StreamConfiguration;
class V4L2M2MDevice;
class V4L2M2MConverter : public Converter
{
public:
V4L2M2MConverter(MediaDevice *media);
int loadConfiguration([[maybe_unused]] const std::string &filename) { return 0; }
bool isValid() const { return m2m_ != nullptr; }
std::vector<PixelFormat> formats(PixelFormat input);
SizeRange sizes(const Size &input);
std::tuple<unsigned int, unsigned int>
strideAndFrameSize(const PixelFormat &pixelFormat, const Size &size);
int configure(const StreamConfiguration &inputCfg,
const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfg);
int exportBuffers(const Stream *stream, unsigned int count,
std::vector<std::unique_ptr<FrameBuffer>> *buffers);
int start();
void stop();
int queueBuffers(FrameBuffer *input,
const std::map<const Stream *, FrameBuffer *> &outputs);
private:
class V4L2M2MStream : protected Loggable
{
public:
V4L2M2MStream(V4L2M2MConverter *converter, const Stream *stream);
bool isValid() const { return m2m_ != nullptr; }
int configure(const StreamConfiguration &inputCfg,
const StreamConfiguration &outputCfg);
int exportBuffers(unsigned int count,
std::vector<std::unique_ptr<FrameBuffer>> *buffers);
int start();
void stop();
int queueBuffers(FrameBuffer *input, FrameBuffer *output);
protected:
std::string logPrefix() const override;
private:
void captureBufferReady(FrameBuffer *buffer);
void outputBufferReady(FrameBuffer *buffer);
V4L2M2MConverter *converter_;
const Stream *stream_;
std::unique_ptr<V4L2M2MDevice> m2m_;
unsigned int inputBufferCount_;
unsigned int outputBufferCount_;
};
std::unique_ptr<V4L2M2MDevice> m2m_;
std::map<const Stream *, std::unique_ptr<V4L2M2MStream>> streams_;
std::map<FrameBuffer *, unsigned int> queue_;
};
} /* namespace libcamera */

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# SPDX-License-Identifier: CC0-1.0
libcamera_internal_headers += files([
'converter_v4l2_m2m.h',
])

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Raspberry Pi Ltd
*
* Helper to deal with controls that take effect with a delay
*/
#pragma once
#include <stdint.h>
#include <unordered_map>
#include <libcamera/controls.h>
namespace libcamera {
class V4L2Device;
class DelayedControls
{
public:
struct ControlParams {
unsigned int delay;
bool priorityWrite;
};
DelayedControls(V4L2Device *device,
const std::unordered_map<uint32_t, ControlParams> &controlParams);
void reset();
bool push(const ControlList &controls);
ControlList get(uint32_t sequence);
void applyControls(uint32_t sequence);
private:
class Info : public ControlValue
{
public:
Info()
: updated(false)
{
}
Info(const ControlValue &v, bool updated_ = true)
: ControlValue(v), updated(updated_)
{
}
bool updated;
};
/* \todo Make the listSize configurable at instance creation time. */
static constexpr int listSize = 16;
class ControlRingBuffer : public std::array<Info, listSize>
{
public:
Info &operator[](unsigned int index)
{
return std::array<Info, listSize>::operator[](index % listSize);
}
const Info &operator[](unsigned int index) const
{
return std::array<Info, listSize>::operator[](index % listSize);
}
};
V4L2Device *device_;
/* \todo Evaluate if we should index on ControlId * or unsigned int */
std::unordered_map<const ControlId *, ControlParams> controlParams_;
unsigned int maxDelay_;
uint32_t queueCount_;
uint32_t writeCount_;
/* \todo Evaluate if we should index on ControlId * or unsigned int */
std::unordered_map<const ControlId *, ControlRingBuffer> values_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* API to enumerate and find media devices
*/
#pragma once
#include <memory>
#include <string>
#include <vector>
#include <libcamera/base/signal.h>
namespace libcamera {
class MediaDevice;
class DeviceMatch
{
public:
DeviceMatch(const std::string &driver);
void add(const std::string &entity);
bool match(const MediaDevice *device) const;
private:
std::string driver_;
std::vector<std::string> entities_;
};
class DeviceEnumerator
{
public:
static std::unique_ptr<DeviceEnumerator> create();
virtual ~DeviceEnumerator();
virtual int init() = 0;
virtual int enumerate() = 0;
std::shared_ptr<MediaDevice> search(const DeviceMatch &dm);
Signal<> devicesAdded;
protected:
std::unique_ptr<MediaDevice> createDevice(const std::string &deviceNode);
void addDevice(std::unique_ptr<MediaDevice> media);
void removeDevice(const std::string &deviceNode);
private:
std::vector<std::shared_ptr<MediaDevice>> devices_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* sysfs-based device enumerator
*/
#pragma once
#include <memory>
#include <string>
#include "libcamera/internal/device_enumerator.h"
class MediaDevice;
namespace libcamera {
class DeviceEnumeratorSysfs final : public DeviceEnumerator
{
public:
int init();
int enumerate();
private:
int populateMediaDevice(MediaDevice *media);
std::string lookupDeviceNode(int major, int minor);
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018-2019, Google Inc.
*
* udev-based device enumerator
*/
#pragma once
#include <list>
#include <map>
#include <memory>
#include <set>
#include <string>
#include <sys/types.h>
#include "libcamera/internal/device_enumerator.h"
struct udev;
struct udev_device;
struct udev_monitor;
namespace libcamera {
class EventNotifier;
class MediaDevice;
class MediaEntity;
class DeviceEnumeratorUdev final : public DeviceEnumerator
{
public:
DeviceEnumeratorUdev();
~DeviceEnumeratorUdev();
int init();
int enumerate();
private:
using DependencyMap = std::map<dev_t, std::list<MediaEntity *>>;
struct MediaDeviceDeps {
MediaDeviceDeps(std::unique_ptr<MediaDevice> media,
DependencyMap deps)
: media_(std::move(media)), deps_(std::move(deps))
{
}
bool operator==(const MediaDeviceDeps &other) const
{
return media_ == other.media_;
}
std::unique_ptr<MediaDevice> media_;
DependencyMap deps_;
};
int addUdevDevice(struct udev_device *dev);
int populateMediaDevice(MediaDevice *media, DependencyMap *deps);
std::string lookupDeviceNode(dev_t devnum);
int addV4L2Device(dev_t devnum);
void udevNotify();
struct udev *udev_;
struct udev_monitor *monitor_;
EventNotifier *notifier_;
std::set<dev_t> orphans_;
std::list<MediaDeviceDeps> pending_;
std::map<dev_t, MediaDeviceDeps *> devMap_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Raspberry Pi Ltd
*
* Helper class for dma-buf allocations.
*/
#pragma once
#include <stddef.h>
#include <libcamera/base/flags.h>
#include <libcamera/base/unique_fd.h>
namespace libcamera {
class DmaBufAllocator
{
public:
enum class DmaBufAllocatorFlag {
CmaHeap = 1 << 0,
SystemHeap = 1 << 1,
UDmaBuf = 1 << 2,
};
using DmaBufAllocatorFlags = Flags<DmaBufAllocatorFlag>;
DmaBufAllocator(DmaBufAllocatorFlags flags = DmaBufAllocatorFlag::CmaHeap);
~DmaBufAllocator();
bool isValid() const { return providerHandle_.isValid(); }
UniqueFD alloc(const char *name, std::size_t size);
private:
UniqueFD allocFromHeap(const char *name, std::size_t size);
UniqueFD allocFromUDmaBuf(const char *name, std::size_t size);
UniqueFD providerHandle_;
DmaBufAllocatorFlag type_;
};
LIBCAMERA_FLAGS_ENABLE_OPERATORS(DmaBufAllocator::DmaBufAllocatorFlag)
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* libcamera image formats
*/
#pragma once
#include <array>
#include <map>
#include <vector>
#include <libcamera/geometry.h>
#include <libcamera/pixel_format.h>
#include "libcamera/internal/v4l2_pixelformat.h"
namespace libcamera {
class PixelFormatInfo
{
public:
enum ColourEncoding {
ColourEncodingRGB,
ColourEncodingYUV,
ColourEncodingRAW,
};
struct Plane {
unsigned int bytesPerGroup;
unsigned int verticalSubSampling;
};
bool isValid() const { return format.isValid(); }
static const PixelFormatInfo &info(const PixelFormat &format);
static const PixelFormatInfo &info(const V4L2PixelFormat &format);
static const PixelFormatInfo &info(const std::string &name);
unsigned int stride(unsigned int width, unsigned int plane,
unsigned int align = 1) const;
unsigned int planeSize(const Size &size, unsigned int plane,
unsigned int align = 1) const;
unsigned int planeSize(unsigned int height, unsigned int plane,
unsigned int stride) const;
unsigned int frameSize(const Size &size, unsigned int align = 1) const;
unsigned int frameSize(const Size &size,
const std::array<unsigned int, 3> &strides) const;
unsigned int numPlanes() const;
/* \todo Add support for non-contiguous memory planes */
const char *name;
PixelFormat format;
std::vector<V4L2PixelFormat> v4l2Formats;
unsigned int bitsPerPixel;
enum ColourEncoding colourEncoding;
bool packed;
unsigned int pixelsPerGroup;
std::array<Plane, 3> planes;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* Internal frame buffer handling
*/
#pragma once
#include <memory>
#include <utility>
#include <libcamera/base/class.h>
#include <libcamera/fence.h>
#include <libcamera/framebuffer.h>
namespace libcamera {
class FrameBuffer::Private : public Extensible::Private
{
LIBCAMERA_DECLARE_PUBLIC(FrameBuffer)
public:
Private(const std::vector<Plane> &planes, uint64_t cookie = 0);
virtual ~Private();
void setRequest(Request *request) { request_ = request; }
bool isContiguous() const { return isContiguous_; }
Fence *fence() const { return fence_.get(); }
void setFence(std::unique_ptr<Fence> fence) { fence_ = std::move(fence); }
void cancel() { metadata_.status = FrameMetadata::FrameCancelled; }
FrameMetadata &metadata() { return metadata_; }
private:
std::vector<Plane> planes_;
FrameMetadata metadata_;
uint64_t cookie_;
std::unique_ptr<Fence> fence_;
Request *request_;
bool isContiguous_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* Image Processing Algorithm data serializer
*/
#pragma once
#include <deque>
#include <iostream>
#include <string.h>
#include <tuple>
#include <type_traits>
#include <vector>
#include <libcamera/base/flags.h>
#include <libcamera/base/log.h>
#include <libcamera/control_ids.h>
#include <libcamera/framebuffer.h>
#include <libcamera/geometry.h>
#include <libcamera/ipa/ipa_interface.h>
#include "libcamera/internal/byte_stream_buffer.h"
#include "libcamera/internal/camera_sensor.h"
#include "libcamera/internal/control_serializer.h"
namespace libcamera {
LOG_DECLARE_CATEGORY(IPADataSerializer)
namespace {
template<typename T,
std::enable_if_t<std::is_arithmetic_v<T>> * = nullptr>
void appendPOD(std::vector<uint8_t> &vec, T val)
{
constexpr size_t byteWidth = sizeof(val);
vec.resize(vec.size() + byteWidth);
memcpy(&*(vec.end() - byteWidth), &val, byteWidth);
}
template<typename T,
std::enable_if_t<std::is_arithmetic_v<T>> * = nullptr>
T readPOD(std::vector<uint8_t>::const_iterator it, size_t pos,
std::vector<uint8_t>::const_iterator end)
{
ASSERT(pos + it < end);
T ret = 0;
memcpy(&ret, &(*(it + pos)), sizeof(ret));
return ret;
}
template<typename T,
std::enable_if_t<std::is_arithmetic_v<T>> * = nullptr>
T readPOD(std::vector<uint8_t> &vec, size_t pos)
{
return readPOD<T>(vec.cbegin(), pos, vec.end());
}
} /* namespace */
template<typename T>
class IPADataSerializer
{
public:
static std::tuple<std::vector<uint8_t>, std::vector<SharedFD>>
serialize(const T &data, ControlSerializer *cs = nullptr);
static T deserialize(const std::vector<uint8_t> &data,
ControlSerializer *cs = nullptr);
static T deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
ControlSerializer *cs = nullptr);
static T deserialize(const std::vector<uint8_t> &data,
const std::vector<SharedFD> &fds,
ControlSerializer *cs = nullptr);
static T deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
std::vector<SharedFD>::const_iterator fdsBegin,
std::vector<SharedFD>::const_iterator fdsEnd,
ControlSerializer *cs = nullptr);
};
#ifndef __DOXYGEN__
/*
* Serialization format for vector of type V:
*
* 4 bytes - uint32_t Length of vector, in number of elements
*
* For every element in the vector:
*
* 4 bytes - uint32_t Size of element, in bytes
* 4 bytes - uint32_t Number of fds for the element
* X bytes - Serialized element
*
* \todo Support elements that are references
*/
template<typename V>
class IPADataSerializer<std::vector<V>>
{
public:
static std::tuple<std::vector<uint8_t>, std::vector<SharedFD>>
serialize(const std::vector<V> &data, ControlSerializer *cs = nullptr)
{
std::vector<uint8_t> dataVec;
std::vector<SharedFD> fdsVec;
/* Serialize the length. */
uint32_t vecLen = data.size();
appendPOD<uint32_t>(dataVec, vecLen);
/* Serialize the members. */
for (auto const &it : data) {
std::vector<uint8_t> dvec;
std::vector<SharedFD> fvec;
std::tie(dvec, fvec) =
IPADataSerializer<V>::serialize(it, cs);
appendPOD<uint32_t>(dataVec, dvec.size());
appendPOD<uint32_t>(dataVec, fvec.size());
dataVec.insert(dataVec.end(), dvec.begin(), dvec.end());
fdsVec.insert(fdsVec.end(), fvec.begin(), fvec.end());
}
return { dataVec, fdsVec };
}
static std::vector<V> deserialize(std::vector<uint8_t> &data, ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend(), cs);
}
static std::vector<V> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
ControlSerializer *cs = nullptr)
{
std::vector<SharedFD> fds;
return deserialize(dataBegin, dataEnd, fds.cbegin(), fds.cend(), cs);
}
static std::vector<V> deserialize(std::vector<uint8_t> &data, std::vector<SharedFD> &fds,
ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend(), fds.cbegin(), fds.cend(), cs);
}
static std::vector<V> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
std::vector<SharedFD>::const_iterator fdsBegin,
[[maybe_unused]] std::vector<SharedFD>::const_iterator fdsEnd,
ControlSerializer *cs = nullptr)
{
uint32_t vecLen = readPOD<uint32_t>(dataBegin, 0, dataEnd);
std::vector<V> ret(vecLen);
std::vector<uint8_t>::const_iterator dataIter = dataBegin + 4;
std::vector<SharedFD>::const_iterator fdIter = fdsBegin;
for (uint32_t i = 0; i < vecLen; i++) {
uint32_t sizeofData = readPOD<uint32_t>(dataIter, 0, dataEnd);
uint32_t sizeofFds = readPOD<uint32_t>(dataIter, 4, dataEnd);
dataIter += 8;
ret[i] = IPADataSerializer<V>::deserialize(dataIter,
dataIter + sizeofData,
fdIter,
fdIter + sizeofFds,
cs);
dataIter += sizeofData;
fdIter += sizeofFds;
}
return ret;
}
};
/*
* Serialization format for map of key type K and value type V:
*
* 4 bytes - uint32_t Length of map, in number of pairs
*
* For every pair in the map:
*
* 4 bytes - uint32_t Size of key, in bytes
* 4 bytes - uint32_t Number of fds for the key
* X bytes - Serialized key
* 4 bytes - uint32_t Size of value, in bytes
* 4 bytes - uint32_t Number of fds for the value
* X bytes - Serialized value
*
* \todo Support keys or values that are references
*/
template<typename K, typename V>
class IPADataSerializer<std::map<K, V>>
{
public:
static std::tuple<std::vector<uint8_t>, std::vector<SharedFD>>
serialize(const std::map<K, V> &data, ControlSerializer *cs = nullptr)
{
std::vector<uint8_t> dataVec;
std::vector<SharedFD> fdsVec;
/* Serialize the length. */
uint32_t mapLen = data.size();
appendPOD<uint32_t>(dataVec, mapLen);
/* Serialize the members. */
for (auto const &it : data) {
std::vector<uint8_t> dvec;
std::vector<SharedFD> fvec;
std::tie(dvec, fvec) =
IPADataSerializer<K>::serialize(it.first, cs);
appendPOD<uint32_t>(dataVec, dvec.size());
appendPOD<uint32_t>(dataVec, fvec.size());
dataVec.insert(dataVec.end(), dvec.begin(), dvec.end());
fdsVec.insert(fdsVec.end(), fvec.begin(), fvec.end());
std::tie(dvec, fvec) =
IPADataSerializer<V>::serialize(it.second, cs);
appendPOD<uint32_t>(dataVec, dvec.size());
appendPOD<uint32_t>(dataVec, fvec.size());
dataVec.insert(dataVec.end(), dvec.begin(), dvec.end());
fdsVec.insert(fdsVec.end(), fvec.begin(), fvec.end());
}
return { dataVec, fdsVec };
}
static std::map<K, V> deserialize(std::vector<uint8_t> &data, ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend(), cs);
}
static std::map<K, V> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
ControlSerializer *cs = nullptr)
{
std::vector<SharedFD> fds;
return deserialize(dataBegin, dataEnd, fds.cbegin(), fds.cend(), cs);
}
static std::map<K, V> deserialize(std::vector<uint8_t> &data, std::vector<SharedFD> &fds,
ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend(), fds.cbegin(), fds.cend(), cs);
}
static std::map<K, V> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
std::vector<SharedFD>::const_iterator fdsBegin,
[[maybe_unused]] std::vector<SharedFD>::const_iterator fdsEnd,
ControlSerializer *cs = nullptr)
{
std::map<K, V> ret;
uint32_t mapLen = readPOD<uint32_t>(dataBegin, 0, dataEnd);
std::vector<uint8_t>::const_iterator dataIter = dataBegin + 4;
std::vector<SharedFD>::const_iterator fdIter = fdsBegin;
for (uint32_t i = 0; i < mapLen; i++) {
uint32_t sizeofData = readPOD<uint32_t>(dataIter, 0, dataEnd);
uint32_t sizeofFds = readPOD<uint32_t>(dataIter, 4, dataEnd);
dataIter += 8;
K key = IPADataSerializer<K>::deserialize(dataIter,
dataIter + sizeofData,
fdIter,
fdIter + sizeofFds,
cs);
dataIter += sizeofData;
fdIter += sizeofFds;
sizeofData = readPOD<uint32_t>(dataIter, 0, dataEnd);
sizeofFds = readPOD<uint32_t>(dataIter, 4, dataEnd);
dataIter += 8;
const V value = IPADataSerializer<V>::deserialize(dataIter,
dataIter + sizeofData,
fdIter,
fdIter + sizeofFds,
cs);
ret.insert({ key, value });
dataIter += sizeofData;
fdIter += sizeofFds;
}
return ret;
}
};
/* Serialization format for Flags is same as for PODs */
template<typename E>
class IPADataSerializer<Flags<E>>
{
public:
static std::tuple<std::vector<uint8_t>, std::vector<SharedFD>>
serialize(const Flags<E> &data, [[maybe_unused]] ControlSerializer *cs = nullptr)
{
std::vector<uint8_t> dataVec;
dataVec.reserve(sizeof(Flags<E>));
appendPOD<uint32_t>(dataVec, static_cast<typename Flags<E>::Type>(data));
return { dataVec, {} };
}
static Flags<E> deserialize(std::vector<uint8_t> &data,
[[maybe_unused]] ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend());
}
static Flags<E> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
[[maybe_unused]] ControlSerializer *cs = nullptr)
{
return Flags<E>{ static_cast<E>(readPOD<uint32_t>(dataBegin, 0, dataEnd)) };
}
static Flags<E> deserialize(std::vector<uint8_t> &data,
[[maybe_unused]] std::vector<SharedFD> &fds,
[[maybe_unused]] ControlSerializer *cs = nullptr)
{
return deserialize(data.cbegin(), data.cend());
}
static Flags<E> deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
[[maybe_unused]] std::vector<SharedFD>::const_iterator fdsBegin,
[[maybe_unused]] std::vector<SharedFD>::const_iterator fdsEnd,
[[maybe_unused]] ControlSerializer *cs = nullptr)
{
return deserialize(dataBegin, dataEnd);
}
};
#endif /* __DOXYGEN__ */
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Image Processing Algorithm module manager
*/
#pragma once
#include <stdint.h>
#include <vector>
#include <libcamera/base/log.h>
#include <libcamera/ipa/ipa_interface.h>
#include <libcamera/ipa/ipa_module_info.h>
#include "libcamera/internal/ipa_module.h"
#include "libcamera/internal/pipeline_handler.h"
#include "libcamera/internal/pub_key.h"
namespace libcamera {
LOG_DECLARE_CATEGORY(IPAManager)
class IPAManager
{
public:
IPAManager();
~IPAManager();
template<typename T>
static std::unique_ptr<T> createIPA(PipelineHandler *pipe,
uint32_t minVersion,
uint32_t maxVersion)
{
IPAModule *m = self_->module(pipe, minVersion, maxVersion);
if (!m)
return nullptr;
std::unique_ptr<T> proxy = std::make_unique<T>(m, !self_->isSignatureValid(m));
if (!proxy->isValid()) {
LOG(IPAManager, Error) << "Failed to load proxy";
return nullptr;
}
return proxy;
}
#if HAVE_IPA_PUBKEY
static const PubKey &pubKey()
{
return pubKey_;
}
#endif
private:
static IPAManager *self_;
void parseDir(const char *libDir, unsigned int maxDepth,
std::vector<std::string> &files);
unsigned int addDir(const char *libDir, unsigned int maxDepth = 0);
IPAModule *module(PipelineHandler *pipe, uint32_t minVersion,
uint32_t maxVersion);
bool isSignatureValid(IPAModule *ipa) const;
std::vector<IPAModule *> modules_;
#if HAVE_IPA_PUBKEY
static const uint8_t publicKeyData_[];
static const PubKey pubKey_;
#endif
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Image Processing Algorithm module
*/
#pragma once
#include <stdint.h>
#include <string>
#include <vector>
#include <libcamera/base/log.h>
#include <libcamera/ipa/ipa_interface.h>
#include <libcamera/ipa/ipa_module_info.h>
#include "libcamera/internal/pipeline_handler.h"
namespace libcamera {
class IPAModule : public Loggable
{
public:
explicit IPAModule(const std::string &libPath);
~IPAModule();
bool isValid() const;
const struct IPAModuleInfo &info() const;
const std::vector<uint8_t> signature() const;
const std::string &path() const;
bool load();
IPAInterface *createInterface();
bool match(PipelineHandler *pipe,
uint32_t minVersion, uint32_t maxVersion) const;
protected:
std::string logPrefix() const override;
private:
int loadIPAModuleInfo();
struct IPAModuleInfo info_;
std::vector<uint8_t> signature_;
std::string libPath_;
bool valid_;
bool loaded_;
void *dlHandle_;
typedef IPAInterface *(*IPAIntfFactory)(void);
IPAIntfFactory ipaCreate_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Image Processing Algorithm proxy
*/
#pragma once
#include <memory>
#include <string>
#include <vector>
#include <libcamera/ipa/ipa_interface.h>
namespace libcamera {
class IPAModule;
class IPAProxy : public IPAInterface
{
public:
enum ProxyState {
ProxyStopped,
ProxyStopping,
ProxyRunning,
};
IPAProxy(IPAModule *ipam);
~IPAProxy();
bool isValid() const { return valid_; }
std::string configurationFile(const std::string &file) const;
protected:
std::string resolvePath(const std::string &file) const;
bool valid_;
ProxyState state_;
private:
IPAModule *ipam_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* Image Processing Algorithm IPC module for IPA proxies
*/
#pragma once
#include <vector>
#include <libcamera/base/shared_fd.h>
#include <libcamera/base/signal.h>
#include "libcamera/internal/ipc_unixsocket.h"
namespace libcamera {
class IPCMessage
{
public:
struct Header {
uint32_t cmd;
uint32_t cookie;
};
IPCMessage();
IPCMessage(uint32_t cmd);
IPCMessage(const Header &header);
IPCMessage(IPCUnixSocket::Payload &payload);
IPCUnixSocket::Payload payload() const;
Header &header() { return header_; }
std::vector<uint8_t> &data() { return data_; }
std::vector<SharedFD> &fds() { return fds_; }
const Header &header() const { return header_; }
const std::vector<uint8_t> &data() const { return data_; }
const std::vector<SharedFD> &fds() const { return fds_; }
private:
Header header_;
std::vector<uint8_t> data_;
std::vector<SharedFD> fds_;
};
class IPCPipe
{
public:
IPCPipe();
virtual ~IPCPipe();
bool isConnected() const { return connected_; }
virtual int sendSync(const IPCMessage &in,
IPCMessage *out) = 0;
virtual int sendAsync(const IPCMessage &data) = 0;
Signal<const IPCMessage &> recv;
protected:
bool connected_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* Image Processing Algorithm IPC module using unix socket
*/
#pragma once
#include <map>
#include <memory>
#include <vector>
#include "libcamera/internal/ipc_pipe.h"
#include "libcamera/internal/ipc_unixsocket.h"
namespace libcamera {
class Process;
class IPCPipeUnixSocket : public IPCPipe
{
public:
IPCPipeUnixSocket(const char *ipaModulePath, const char *ipaProxyWorkerPath);
~IPCPipeUnixSocket();
int sendSync(const IPCMessage &in,
IPCMessage *out = nullptr) override;
int sendAsync(const IPCMessage &data) override;
private:
struct CallData {
IPCUnixSocket::Payload *response;
bool done;
};
void readyRead();
int call(const IPCUnixSocket::Payload &message,
IPCUnixSocket::Payload *response, uint32_t seq);
std::unique_ptr<Process> proc_;
std::unique_ptr<IPCUnixSocket> socket_;
std::map<uint32_t, CallData> callData_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* IPC mechanism based on Unix sockets
*/
#pragma once
#include <stdint.h>
#include <sys/types.h>
#include <vector>
#include <libcamera/base/signal.h>
#include <libcamera/base/unique_fd.h>
namespace libcamera {
class EventNotifier;
class IPCUnixSocket
{
public:
struct Payload {
std::vector<uint8_t> data;
std::vector<int32_t> fds;
};
IPCUnixSocket();
~IPCUnixSocket();
UniqueFD create();
int bind(UniqueFD fd);
void close();
bool isBound() const;
int send(const Payload &payload);
int receive(Payload *payload);
Signal<> readyRead;
private:
struct Header {
uint32_t data;
uint8_t fds;
};
int sendData(const void *buffer, size_t length, const int32_t *fds, unsigned int num);
int recvData(void *buffer, size_t length, int32_t *fds, unsigned int num);
void dataNotifier();
UniqueFD fd_;
bool headerReceived_;
struct Header header_;
EventNotifier *notifier_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* Frame buffer memory mapping support
*/
#pragma once
#include <stdint.h>
#include <vector>
#include <libcamera/base/class.h>
#include <libcamera/base/flags.h>
#include <libcamera/base/span.h>
#include <libcamera/framebuffer.h>
namespace libcamera {
class MappedBuffer
{
public:
using Plane = Span<uint8_t>;
~MappedBuffer();
MappedBuffer(MappedBuffer &&other);
MappedBuffer &operator=(MappedBuffer &&other);
bool isValid() const { return error_ == 0; }
int error() const { return error_; }
const std::vector<Plane> &planes() const { return planes_; }
protected:
MappedBuffer();
int error_;
std::vector<Plane> planes_;
std::vector<Plane> maps_;
private:
LIBCAMERA_DISABLE_COPY(MappedBuffer)
};
class MappedFrameBuffer : public MappedBuffer
{
public:
enum class MapFlag {
Read = 1 << 0,
Write = 1 << 1,
ReadWrite = Read | Write,
};
using MapFlags = Flags<MapFlag>;
MappedFrameBuffer(const FrameBuffer *buffer, MapFlags flags);
};
LIBCAMERA_FLAGS_ENABLE_OPERATORS(MappedFrameBuffer::MapFlag)
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* Media device handler
*/
#pragma once
#include <map>
#include <sstream>
#include <string>
#include <vector>
#include <linux/media.h>
#include <libcamera/base/log.h>
#include <libcamera/base/signal.h>
#include <libcamera/base/unique_fd.h>
#include "libcamera/internal/media_object.h"
namespace libcamera {
class MediaDevice : protected Loggable
{
public:
MediaDevice(const std::string &deviceNode);
~MediaDevice();
bool acquire();
void release();
bool busy() const { return acquired_; }
bool lock();
void unlock();
int populate();
bool isValid() const { return valid_; }
const std::string &driver() const { return driver_; }
const std::string &deviceNode() const { return deviceNode_; }
const std::string &model() const { return model_; }
unsigned int version() const { return version_; }
unsigned int hwRevision() const { return hwRevision_; }
const std::vector<MediaEntity *> &entities() const { return entities_; }
MediaEntity *getEntityByName(const std::string &name) const;
MediaLink *link(const std::string &sourceName, unsigned int sourceIdx,
const std::string &sinkName, unsigned int sinkIdx);
MediaLink *link(const MediaEntity *source, unsigned int sourceIdx,
const MediaEntity *sink, unsigned int sinkIdx);
MediaLink *link(const MediaPad *source, const MediaPad *sink);
int disableLinks();
Signal<> disconnected;
protected:
std::string logPrefix() const override;
private:
int open();
void close();
MediaObject *object(unsigned int id);
bool addObject(MediaObject *object);
void clear();
struct media_v2_interface *findInterface(const struct media_v2_topology &topology,
unsigned int entityId);
bool populateEntities(const struct media_v2_topology &topology);
bool populatePads(const struct media_v2_topology &topology);
bool populateLinks(const struct media_v2_topology &topology);
void fixupEntityFlags(struct media_v2_entity *entity);
friend int MediaLink::setEnabled(bool enable);
int setupLink(const MediaLink *link, unsigned int flags);
std::string driver_;
std::string deviceNode_;
std::string model_;
unsigned int version_;
unsigned int hwRevision_;
UniqueFD fd_;
bool valid_;
bool acquired_;
std::map<unsigned int, MediaObject *> objects_;
std::vector<MediaEntity *> entities_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* Media Device objects: entities, pads and links.
*/
#pragma once
#include <string>
#include <vector>
#include <linux/media.h>
#include <libcamera/base/class.h>
namespace libcamera {
class MediaDevice;
class MediaEntity;
class MediaPad;
class MediaObject
{
public:
MediaDevice *device() { return dev_; }
const MediaDevice *device() const { return dev_; }
unsigned int id() const { return id_; }
protected:
friend class MediaDevice;
MediaObject(MediaDevice *dev, unsigned int id)
: dev_(dev), id_(id)
{
}
virtual ~MediaObject() = default;
MediaDevice *dev_;
unsigned int id_;
};
class MediaLink : public MediaObject
{
public:
MediaPad *source() const { return source_; }
MediaPad *sink() const { return sink_; }
unsigned int flags() const { return flags_; }
int setEnabled(bool enable);
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(MediaLink)
friend class MediaDevice;
MediaLink(const struct media_v2_link *link,
MediaPad *source, MediaPad *sink);
MediaPad *source_;
MediaPad *sink_;
unsigned int flags_;
};
class MediaPad : public MediaObject
{
public:
unsigned int index() const { return index_; }
MediaEntity *entity() const { return entity_; }
unsigned int flags() const { return flags_; }
const std::vector<MediaLink *> &links() const { return links_; }
void addLink(MediaLink *link);
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(MediaPad)
friend class MediaDevice;
MediaPad(const struct media_v2_pad *pad, MediaEntity *entity);
unsigned int index_;
MediaEntity *entity_;
unsigned int flags_;
std::vector<MediaLink *> links_;
};
class MediaEntity : public MediaObject
{
public:
enum class Type {
Invalid,
MediaEntity,
V4L2Subdevice,
V4L2VideoDevice,
};
const std::string &name() const { return name_; }
unsigned int function() const { return function_; }
unsigned int flags() const { return flags_; }
Type type() const { return type_; }
const std::string &deviceNode() const { return deviceNode_; }
unsigned int deviceMajor() const { return major_; }
unsigned int deviceMinor() const { return minor_; }
const std::vector<MediaPad *> &pads() const { return pads_; }
const std::vector<MediaEntity *> ancillaryEntities() const { return ancillaryEntities_; }
const MediaPad *getPadByIndex(unsigned int index) const;
const MediaPad *getPadById(unsigned int id) const;
int setDeviceNode(const std::string &deviceNode);
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(MediaEntity)
friend class MediaDevice;
MediaEntity(MediaDevice *dev, const struct media_v2_entity *entity,
const struct media_v2_interface *iface);
void addPad(MediaPad *pad);
void addAncillaryEntity(MediaEntity *ancillaryEntity);
std::string name_;
unsigned int function_;
unsigned int flags_;
Type type_;
std::string deviceNode_;
unsigned int major_;
unsigned int minor_;
std::vector<MediaPad *> pads_;
std::vector<MediaEntity *> ancillaryEntities_;
};
} /* namespace libcamera */

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# SPDX-License-Identifier: CC0-1.0
subdir('tracepoints')
libcamera_tracepoint_header = custom_target(
'tp_header',
input : ['tracepoints.h.in', tracepoint_files],
output : 'tracepoints.h',
command : [gen_tracepoints_header, include_build_dir, '@OUTPUT@', '@INPUT@'],
)
libcamera_internal_headers = files([
'bayer_format.h',
'byte_stream_buffer.h',
'camera.h',
'camera_controls.h',
'camera_lens.h',
'camera_manager.h',
'camera_sensor.h',
'camera_sensor_properties.h',
'control_serializer.h',
'control_validator.h',
'converter.h',
'delayed_controls.h',
'device_enumerator.h',
'device_enumerator_sysfs.h',
'device_enumerator_udev.h',
'dma_buf_allocator.h',
'formats.h',
'framebuffer.h',
'ipa_manager.h',
'ipa_module.h',
'ipa_proxy.h',
'ipc_unixsocket.h',
'mapped_framebuffer.h',
'media_device.h',
'media_object.h',
'pipeline_handler.h',
'process.h',
'pub_key.h',
'request.h',
'shared_mem_object.h',
'source_paths.h',
'sysfs.h',
'v4l2_device.h',
'v4l2_pixelformat.h',
'v4l2_subdevice.h',
'v4l2_videodevice.h',
'yaml_parser.h',
])
subdir('converter')
subdir('software_isp')

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* Pipeline handler infrastructure
*/
#pragma once
#include <memory>
#include <queue>
#include <set>
#include <string>
#include <sys/types.h>
#include <vector>
#include <libcamera/base/mutex.h>
#include <libcamera/base/object.h>
#include <libcamera/controls.h>
#include <libcamera/stream.h>
#include "libcamera/internal/ipa_proxy.h"
namespace libcamera {
class Camera;
class CameraConfiguration;
class CameraManager;
class DeviceEnumerator;
class DeviceMatch;
class FrameBuffer;
class MediaDevice;
class PipelineHandler;
class Request;
class PipelineHandler : public std::enable_shared_from_this<PipelineHandler>,
public Object
{
public:
PipelineHandler(CameraManager *manager);
virtual ~PipelineHandler();
virtual bool match(DeviceEnumerator *enumerator) = 0;
MediaDevice *acquireMediaDevice(DeviceEnumerator *enumerator,
const DeviceMatch &dm);
bool acquire();
void release(Camera *camera);
virtual std::unique_ptr<CameraConfiguration> generateConfiguration(Camera *camera,
Span<const StreamRole> roles) = 0;
virtual int configure(Camera *camera, CameraConfiguration *config) = 0;
virtual int exportFrameBuffers(Camera *camera, Stream *stream,
std::vector<std::unique_ptr<FrameBuffer>> *buffers) = 0;
virtual int start(Camera *camera, const ControlList *controls) = 0;
void stop(Camera *camera);
bool hasPendingRequests(const Camera *camera) const;
void registerRequest(Request *request);
void queueRequest(Request *request);
bool completeBuffer(Request *request, FrameBuffer *buffer);
void completeRequest(Request *request);
std::string configurationFile(const std::string &subdir,
const std::string &name) const;
const char *name() const { return name_; }
protected:
void registerCamera(std::shared_ptr<Camera> camera);
void hotplugMediaDevice(MediaDevice *media);
virtual int queueRequestDevice(Camera *camera, Request *request) = 0;
virtual void stopDevice(Camera *camera) = 0;
virtual void releaseDevice(Camera *camera);
CameraManager *manager_;
private:
void unlockMediaDevices();
void mediaDeviceDisconnected(MediaDevice *media);
virtual void disconnect();
void doQueueRequest(Request *request);
void doQueueRequests();
std::vector<std::shared_ptr<MediaDevice>> mediaDevices_;
std::vector<std::weak_ptr<Camera>> cameras_;
std::queue<Request *> waitingRequests_;
const char *name_;
Mutex lock_;
unsigned int useCount_ LIBCAMERA_TSA_GUARDED_BY(lock_);
friend class PipelineHandlerFactoryBase;
};
class PipelineHandlerFactoryBase
{
public:
PipelineHandlerFactoryBase(const char *name);
virtual ~PipelineHandlerFactoryBase() = default;
std::shared_ptr<PipelineHandler> create(CameraManager *manager) const;
const std::string &name() const { return name_; }
static std::vector<PipelineHandlerFactoryBase *> &factories();
static const PipelineHandlerFactoryBase *getFactoryByName(const std::string &name);
private:
static void registerType(PipelineHandlerFactoryBase *factory);
virtual std::unique_ptr<PipelineHandler>
createInstance(CameraManager *manager) const = 0;
std::string name_;
};
template<typename _PipelineHandler>
class PipelineHandlerFactory final : public PipelineHandlerFactoryBase
{
public:
PipelineHandlerFactory(const char *name)
: PipelineHandlerFactoryBase(name)
{
}
std::unique_ptr<PipelineHandler>
createInstance(CameraManager *manager) const override
{
return std::make_unique<_PipelineHandler>(manager);
}
};
#define REGISTER_PIPELINE_HANDLER(handler, name) \
static PipelineHandlerFactory<handler> global_##handler##Factory(name);
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Process object
*/
#pragma once
#include <signal.h>
#include <string>
#include <vector>
#include <libcamera/base/signal.h>
#include <libcamera/base/unique_fd.h>
namespace libcamera {
class EventNotifier;
class Process final
{
public:
enum ExitStatus {
NotExited,
NormalExit,
SignalExit,
};
Process();
~Process();
int start(const std::string &path,
const std::vector<std::string> &args = std::vector<std::string>(),
const std::vector<int> &fds = std::vector<int>());
ExitStatus exitStatus() const { return exitStatus_; }
int exitCode() const { return exitCode_; }
void kill();
Signal<enum ExitStatus, int> finished;
private:
void closeAllFdsExcept(const std::vector<int> &fds);
int isolate();
void died(int wstatus);
pid_t pid_;
bool running_;
enum ExitStatus exitStatus_;
int exitCode_;
friend class ProcessManager;
};
class ProcessManager
{
public:
ProcessManager();
~ProcessManager();
void registerProcess(Process *proc);
static ProcessManager *instance();
int writePipe() const;
const struct sigaction &oldsa() const;
private:
static ProcessManager *self_;
void sighandler();
std::list<Process *> processes_;
struct sigaction oldsa_;
EventNotifier *sigEvent_;
UniqueFD pipe_[2];
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* Public key signature verification
*/
#pragma once
#include <stdint.h>
#include <libcamera/base/span.h>
#if HAVE_CRYPTO
struct evp_pkey_st;
#elif HAVE_GNUTLS
struct gnutls_pubkey_st;
#endif
namespace libcamera {
class PubKey
{
public:
PubKey(Span<const uint8_t> key);
~PubKey();
bool isValid() const { return valid_; }
bool verify(Span<const uint8_t> data, Span<const uint8_t> sig) const;
private:
bool valid_;
#if HAVE_CRYPTO
struct evp_pkey_st *pubkey_;
#elif HAVE_GNUTLS
struct gnutls_pubkey_st *pubkey_;
#endif
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* Request class private data
*/
#pragma once
#include <chrono>
#include <map>
#include <memory>
#include <libcamera/base/event_notifier.h>
#include <libcamera/base/timer.h>
#include <libcamera/request.h>
using namespace std::chrono_literals;
namespace libcamera {
class Camera;
class FrameBuffer;
class Request::Private : public Extensible::Private
{
LIBCAMERA_DECLARE_PUBLIC(Request)
public:
Private(Camera *camera);
~Private();
Camera *camera() const { return camera_; }
bool hasPendingBuffers() const;
bool completeBuffer(FrameBuffer *buffer);
void complete();
void cancel();
void reset();
void prepare(std::chrono::milliseconds timeout = 0ms);
Signal<> prepared;
private:
friend class PipelineHandler;
friend std::ostream &operator<<(std::ostream &out, const Request &r);
void doCancelRequest();
void emitPrepareCompleted();
void notifierActivated(FrameBuffer *buffer);
void timeout();
Camera *camera_;
bool cancelled_;
uint32_t sequence_ = 0;
bool prepared_ = false;
std::unordered_set<FrameBuffer *> pending_;
std::map<FrameBuffer *, std::unique_ptr<EventNotifier>> notifiers_;
std::unique_ptr<Timer> timer_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2023 Raspberry Pi Ltd
* Copyright (C) 2024 Andrei Konovalov
* Copyright (C) 2024 Dennis Bonke
*
* Helpers for shared memory allocations
*/
#pragma once
#include <stddef.h>
#include <stdint.h>
#include <string>
#include <sys/mman.h>
#include <type_traits>
#include <utility>
#include <libcamera/base/class.h>
#include <libcamera/base/shared_fd.h>
#include <libcamera/base/span.h>
namespace libcamera {
class SharedMem
{
public:
SharedMem();
SharedMem(const std::string &name, std::size_t size);
SharedMem(SharedMem &&rhs);
virtual ~SharedMem();
SharedMem &operator=(SharedMem &&rhs);
const SharedFD &fd() const
{
return fd_;
}
Span<uint8_t> mem() const
{
return mem_;
}
explicit operator bool() const
{
return !mem_.empty();
}
private:
LIBCAMERA_DISABLE_COPY(SharedMem)
SharedFD fd_;
Span<uint8_t> mem_;
};
template<class T, typename = std::enable_if_t<std::is_standard_layout<T>::value>>
class SharedMemObject : public SharedMem
{
public:
static constexpr std::size_t kSize = sizeof(T);
SharedMemObject()
: SharedMem(), obj_(nullptr)
{
}
template<class... Args>
SharedMemObject(const std::string &name, Args &&...args)
: SharedMem(name, kSize), obj_(nullptr)
{
if (mem().empty())
return;
obj_ = new (mem().data()) T(std::forward<Args>(args)...);
}
SharedMemObject(SharedMemObject<T> &&rhs)
: SharedMem(std::move(rhs))
{
this->obj_ = rhs.obj_;
rhs.obj_ = nullptr;
}
~SharedMemObject()
{
if (obj_)
obj_->~T();
}
SharedMemObject<T> &operator=(SharedMemObject<T> &&rhs)
{
SharedMem::operator=(std::move(rhs));
this->obj_ = rhs.obj_;
rhs.obj_ = nullptr;
return *this;
}
T *operator->()
{
return obj_;
}
const T *operator->() const
{
return obj_;
}
T &operator*()
{
return *obj_;
}
const T &operator*() const
{
return *obj_;
}
private:
LIBCAMERA_DISABLE_COPY(SharedMemObject)
T *obj_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2023, 2024 Red Hat Inc.
*
* Authors:
* Hans de Goede <hdegoede@redhat.com>
*
* DebayerParams header
*/
#pragma once
#include <array>
#include <stdint.h>
namespace libcamera {
struct DebayerParams {
static constexpr unsigned int kRGBLookupSize = 256;
using ColorLookupTable = std::array<uint8_t, kRGBLookupSize>;
ColorLookupTable red;
ColorLookupTable green;
ColorLookupTable blue;
};
} /* namespace libcamera */

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# SPDX-License-Identifier: CC0-1.0
libcamera_internal_headers += files([
'debayer_params.h',
'software_isp.h',
'swisp_stats.h',
])

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2023, Linaro Ltd
*
* Simple software ISP implementation
*/
#pragma once
#include <functional>
#include <initializer_list>
#include <map>
#include <memory>
#include <string>
#include <tuple>
#include <vector>
#include <libcamera/base/class.h>
#include <libcamera/base/log.h>
#include <libcamera/base/signal.h>
#include <libcamera/base/thread.h>
#include <libcamera/geometry.h>
#include <libcamera/pixel_format.h>
#include <libcamera/ipa/soft_ipa_interface.h>
#include <libcamera/ipa/soft_ipa_proxy.h>
#include "libcamera/internal/camera_sensor.h"
#include "libcamera/internal/dma_buf_allocator.h"
#include "libcamera/internal/pipeline_handler.h"
#include "libcamera/internal/shared_mem_object.h"
#include "libcamera/internal/software_isp/debayer_params.h"
namespace libcamera {
class DebayerCpu;
class FrameBuffer;
class PixelFormat;
class Stream;
struct StreamConfiguration;
LOG_DECLARE_CATEGORY(SoftwareIsp)
class SoftwareIsp
{
public:
SoftwareIsp(PipelineHandler *pipe, const CameraSensor *sensor);
~SoftwareIsp();
int loadConfiguration([[maybe_unused]] const std::string &filename) { return 0; }
bool isValid() const;
std::vector<PixelFormat> formats(PixelFormat input);
SizeRange sizes(PixelFormat inputFormat, const Size &inputSize);
std::tuple<unsigned int, unsigned int>
strideAndFrameSize(const PixelFormat &outputFormat, const Size &size);
int configure(const StreamConfiguration &inputCfg,
const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfgs,
const ControlInfoMap &sensorControls);
int exportBuffers(const Stream *stream, unsigned int count,
std::vector<std::unique_ptr<FrameBuffer>> *buffers);
void processStats(const ControlList &sensorControls);
int start();
void stop();
int queueBuffers(FrameBuffer *input,
const std::map<const Stream *, FrameBuffer *> &outputs);
void process(FrameBuffer *input, FrameBuffer *output);
Signal<FrameBuffer *> inputBufferReady;
Signal<FrameBuffer *> outputBufferReady;
Signal<> ispStatsReady;
Signal<const ControlList &> setSensorControls;
private:
void saveIspParams();
void setSensorCtrls(const ControlList &sensorControls);
void statsReady();
void inputReady(FrameBuffer *input);
void outputReady(FrameBuffer *output);
std::unique_ptr<DebayerCpu> debayer_;
Thread ispWorkerThread_;
SharedMemObject<DebayerParams> sharedParams_;
DebayerParams debayerParams_;
DmaBufAllocator dmaHeap_;
std::unique_ptr<ipa::soft::IPAProxySoft> ipa_;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2023, Linaro Ltd
*
* Statistics data format used by the software ISP and software IPA
*/
#pragma once
#include <array>
#include <stdint.h>
namespace libcamera {
/**
* \brief Struct that holds the statistics for the Software ISP
*
* The struct value types are large enough to not overflow.
* Should they still overflow for some reason, no check is performed and they
* wrap around.
*/
struct SwIspStats {
/**
* \brief Holds the sum of all sampled red pixels
*/
uint64_t sumR_;
/**
* \brief Holds the sum of all sampled green pixels
*/
uint64_t sumG_;
/**
* \brief Holds the sum of all sampled blue pixels
*/
uint64_t sumB_;
/**
* \brief Number of bins in the yHistogram
*/
static constexpr unsigned int kYHistogramSize = 64;
/**
* \brief Type of the histogram.
*/
using Histogram = std::array<uint32_t, kYHistogramSize>;
/**
* \brief A histogram of luminance values
*/
Histogram yHistogram;
};
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* Identify libcamera source and build paths
*/
#pragma once
#include <string>
namespace libcamera::utils {
std::string libcameraBuildPath();
std::string libcameraSourcePath();
} /* namespace libcamera::utils */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* Miscellaneous utility functions to access sysfs
*/
#pragma once
#include <string>
namespace libcamera {
namespace sysfs {
std::string charDevPath(const std::string &deviceNode);
std::string firmwareNodePath(const std::string &device);
} /* namespace sysfs */
} /* namespace libcamera */

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) {{year}}, Google Inc.
*
* Tracepoints with lttng
*
* This file is auto-generated. Do not edit.
*/
#ifndef __LIBCAMERA_INTERNAL_TRACEPOINTS_H__
#define __LIBCAMERA_INTERNAL_TRACEPOINTS_H__
#if HAVE_TRACING
#define LIBCAMERA_TRACEPOINT(...) tracepoint(libcamera, __VA_ARGS__)
#define LIBCAMERA_TRACEPOINT_IPA_BEGIN(pipe, func) \
tracepoint(libcamera, ipa_call_begin, #pipe, #func)
#define LIBCAMERA_TRACEPOINT_IPA_END(pipe, func) \
tracepoint(libcamera, ipa_call_end, #pipe, #func)
#else
namespace {
template <typename ...Args>
inline void unused([[maybe_unused]] Args&& ...args)
{
}
} /* namespace */
#define LIBCAMERA_TRACEPOINT(category, ...) unused(__VA_ARGS__)
#define LIBCAMERA_TRACEPOINT_IPA_BEGIN(pipe, func)
#define LIBCAMERA_TRACEPOINT_IPA_END(pipe, func)
#endif /* HAVE_TRACING */
#endif /* __LIBCAMERA_INTERNAL_TRACEPOINTS_H__ */
#if HAVE_TRACING
#undef TRACEPOINT_PROVIDER
#define TRACEPOINT_PROVIDER libcamera
#undef TRACEPOINT_INCLUDE
#define TRACEPOINT_INCLUDE "{{path}}"
#if !defined(INCLUDE_LIBCAMERA_INTERNAL_TRACEPOINTS_TP_H) || defined(TRACEPOINT_HEADER_MULTI_READ)
#define INCLUDE_LIBCAMERA_INTERNAL_TRACEPOINTS_TP_H
#include <lttng/tracepoint.h>
{{source}}
#endif /* INCLUDE_LIBCAMERA_INTERNAL_TRACEPOINTS_TP_H */
#include <lttng/tracepoint-event.h>
#endif /* HAVE_TRACING */

16
spider-cam/libcamera/include/libcamera/internal/tracepoints/buffer_enums.tp Normal file
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* buffer_enums.tp - Tracepoint definition for enums in the buffer class
*/
TRACEPOINT_ENUM(
libcamera,
buffer_status,
TP_ENUM_VALUES(
ctf_enum_value("FrameSuccess", 0)
ctf_enum_value("FrameError", 1)
ctf_enum_value("FrameCancelled", 2)
)
)

12
spider-cam/libcamera/include/libcamera/internal/tracepoints/meson.build Normal file
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# SPDX-License-Identifier: CC0-1.0
# enum files must go first
tracepoint_files = files([
'buffer_enums.tp',
'request_enums.tp',
])
tracepoint_files += files([
'pipeline.tp',
'request.tp',
])

32
spider-cam/libcamera/include/libcamera/internal/tracepoints/pipeline.tp Normal file
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* pipeline.tp - Tracepoints for pipelines
*/
TRACEPOINT_EVENT(
libcamera,
ipa_call_begin,
TP_ARGS(
const char *, pipe,
const char *, func
),
TP_FIELDS(
ctf_string(pipeline_name, pipe)
ctf_string(function_name, func)
)
)
TRACEPOINT_EVENT(
libcamera,
ipa_call_end,
TP_ARGS(
const char *, pipe,
const char *, func
),
TP_FIELDS(
ctf_string(pipeline_name, pipe)
ctf_string(function_name, func)
)
)

102
spider-cam/libcamera/include/libcamera/internal/tracepoints/request.tp Normal file
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* request.tp - Tracepoints for the request object
*/
#include <libcamera/framebuffer.h>
#include "libcamera/internal/request.h"
TRACEPOINT_EVENT_CLASS(
libcamera,
request,
TP_ARGS(
libcamera::Request *, req
),
TP_FIELDS(
ctf_integer_hex(uintptr_t, request, reinterpret_cast<uintptr_t>(req))
ctf_integer(uint64_t, cookie, req->cookie())
ctf_enum(libcamera, request_status, uint32_t, status, req->status())
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_construct,
TP_ARGS(
libcamera::Request *, req
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_destroy,
TP_ARGS(
libcamera::Request *, req
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_reuse,
TP_ARGS(
libcamera::Request *, req
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_queue,
TP_ARGS(
libcamera::Request *, req
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_device_queue,
TP_ARGS(
libcamera::Request *, req
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_complete,
TP_ARGS(
libcamera::Request::Private *, req
)
)
TRACEPOINT_EVENT_INSTANCE(
libcamera,
request,
request_cancel,
TP_ARGS(
libcamera::Request::Private *, req
)
)
TRACEPOINT_EVENT(
libcamera,
request_complete_buffer,
TP_ARGS(
libcamera::Request::Private *, req,
libcamera::FrameBuffer *, buf
),
TP_FIELDS(
ctf_integer_hex(uintptr_t, request, reinterpret_cast<uintptr_t>(req))
ctf_integer(uint64_t, cookie, req->_o<libcamera::Request>()->cookie())
ctf_integer(int, status, req->_o<libcamera::Request>()->status())
ctf_integer_hex(uintptr_t, buffer, reinterpret_cast<uintptr_t>(buf))
ctf_enum(libcamera, buffer_status, uint32_t, buf_status, buf->metadata().status)
)
)

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