From 23ac77dc4a096b92da7668e9ddfce10b22e73506 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Mon, 19 Nov 2018 19:48:39 +0200 Subject: utils: ipu3: Add IPU3 raw capture unpack utility The IPU3 captures Bayer data in a 25-pixels-in-32-bytes packed format, which no standard tool can process. Add a quick implementation of data unpacking to turn raw binary files into 16 bits per pixel unpacked Bayer data. Signed-off-by: Laurent Pinchart Reviewed-by: Jacopo Mondi --- utils/ipu3/ipu3-unpack.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++++ utils/ipu3/meson.build | 1 + 2 files changed, 94 insertions(+) create mode 100644 utils/ipu3/ipu3-unpack.c create mode 100644 utils/ipu3/meson.build (limited to 'utils/ipu3') diff --git a/utils/ipu3/ipu3-unpack.c b/utils/ipu3/ipu3-unpack.c new file mode 100644 index 00000000..2dce1038 --- /dev/null +++ b/utils/ipu3/ipu3-unpack.c @@ -0,0 +1,93 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * ipu3-unpack - Unpack IPU3 raw Bayer format to 16-bit Bayer + * + * Copyright 2018 Laurent Pinchart + */ +#define _GNU_SOURCE + +#include +#include +#include +#include +#include +#include +#include +#include + +static void usage(const char *argv0) +{ + printf("Usage: %s input-file output-file\n", basename(argv0)); + printf("Unpack the IPU3 raw Bayer format to 16-bit Bayer\n"); +} + +int main(int argc, char *argv[]) +{ + int in_fd; + int out_fd; + int ret; + + if (argc != 3) { + usage(argv[0]); + return 1; + } + + in_fd = open(argv[1], O_RDONLY); + if (in_fd == -1) { + fprintf(stderr, "Failed to open input file '%s': %s\n", + argv[1], strerror(errno)); + return 1; + } + + out_fd = open(argv[2], O_WRONLY | O_TRUNC | O_CREAT, 0644); + if (out_fd == -1) { + fprintf(stderr, "Failed to open output file '%s': %s\n", + argv[2], strerror(errno)); + return 1; + } + + while (1) { + uint8_t in_data[32]; + uint8_t out_data[50]; + unsigned int i; + + ret = read(in_fd, in_data, 32); + if (ret == -1) { + fprintf(stderr, "Failed to read input data: %s\n", + strerror(errno)); + goto done; + } + + if (ret < 32) { + if (ret != 0) + fprintf(stderr, "%u bytes of stray data at end of input\n", + ret); + break; + } + + for (i = 0; i < 25; ++i) { + unsigned int index = (i * 10) / 8; + unsigned int lsb_shift = (i * 10) % 8; + unsigned int msb_shift = 8 - lsb_shift; + uint16_t pixel; + + pixel = ((in_data[index+1] << msb_shift) & 0x3ff) + | ((in_data[index+0] >> lsb_shift) & 0x3ff); + out_data[i*2+0] = (pixel >> 0) & 0xff; + out_data[i*2+1] = (pixel >> 8) & 0xff; + } + + ret = write(out_fd, out_data, 50); + if (ret < -1) { + fprintf(stderr, "Failed to read input data: %s\n", + strerror(errno)); + goto done; + } + } + +done: + close(in_fd); + close(out_fd); + + return ret ? 1 : 0; +} diff --git a/utils/ipu3/meson.build b/utils/ipu3/meson.build new file mode 100644 index 00000000..49c45856 --- /dev/null +++ b/utils/ipu3/meson.build @@ -0,0 +1 @@ +ipu3_unpack = executable('ipu3-unpack', 'ipu3-unpack.c') -- cgit v1.2.1