102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* ipu3-pack - Convert unpacked RAW10 Bayer data to the IPU3 packed Bayer formats
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*
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* Copyright 2022 Umang Jain <umang.jain@ideasonboard.com>
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*/
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#define _GNU_SOURCE
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#include <errno.h>
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#include <fcntl.h>
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#include <libgen.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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static void usage(char *argv0)
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{
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printf("Usage: %s input-file output-file\n", basename(argv0));
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printf("Convert unpacked RAW10 Bayer data to the IPU3 packed Bayer formats\n");
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printf("If the output-file '-', output data will be written to standard output\n");
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}
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int main(int argc, char *argv[])
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{
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int in_fd;
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int out_fd;
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int ret;
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if (argc != 3) {
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usage(argv[0]);
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return 1;
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}
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in_fd = open(argv[1], O_RDONLY);
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if (in_fd == -1) {
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fprintf(stderr, "Failed to open input file '%s': %s\n",
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argv[1], strerror(errno));
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return 1;
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}
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if (strcmp(argv[2], "-") == 0) {
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out_fd = STDOUT_FILENO;
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} else {
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out_fd = open(argv[2], O_WRONLY | O_TRUNC | O_CREAT, 0644);
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if (out_fd == -1) {
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fprintf(stderr, "Failed to open output file '%s': %s\n",
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argv[2], strerror(errno));
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close(in_fd);
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return 1;
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}
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}
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while (1) {
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uint16_t in_data[25];
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uint8_t out_data[32];
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unsigned int i;
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ret = read(in_fd, in_data, sizeof(in_data));
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if (ret < 0) {
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fprintf(stderr, "Failed to read input data: %s\n",
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strerror(errno));
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goto done;
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}
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if ((unsigned)ret < sizeof(in_data)) {
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if (ret != 0)
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fprintf(stderr, "%u bytes of stray data at end of input\n",
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ret);
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goto done;
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}
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for (i = 0; i < 30; ++i) {
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unsigned int index = (i * 8) / 10;
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unsigned int msb_shift = (i * 8) % 10;
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unsigned int lsb_shift = 10 - msb_shift;
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out_data[i] = ((in_data[index] >> msb_shift) & 0xff)
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| ((in_data[index+1] << lsb_shift) & 0xff);
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}
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out_data[30] = (in_data[24] >> 0) & 0xff;
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out_data[31] = (in_data[24] >> 8) & 0x03;
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ret = write(out_fd, out_data, sizeof(out_data));
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if (ret < 0) {
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fprintf(stderr, "Failed to write output data: %s\n",
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strerror(errno));
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goto done;
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}
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}
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done:
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close(in_fd);
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if (out_fd != STDOUT_FILENO)
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close(out_fd);
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return ret ? 1 : 0;
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}
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