diff options
Diffstat (limited to 'third_party/aom/examples/decode_to_md5.c')
-rw-r--r-- | third_party/aom/examples/decode_to_md5.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/third_party/aom/examples/decode_to_md5.c b/third_party/aom/examples/decode_to_md5.c deleted file mode 100644 index bc127b78d..000000000 --- a/third_party/aom/examples/decode_to_md5.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * Copyright (c) 2016, Alliance for Open Media. All rights reserved - * - * This source code is subject to the terms of the BSD 2 Clause License and - * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License - * was not distributed with this source code in the LICENSE file, you can - * obtain it at www.aomedia.org/license/software. If the Alliance for Open - * Media Patent License 1.0 was not distributed with this source code in the - * PATENTS file, you can obtain it at www.aomedia.org/license/patent. - */ - -// Frame-by-frame MD5 Checksum -// =========================== -// -// This example builds upon the simple decoder loop to show how checksums -// of the decoded output can be generated. These are used for validating -// decoder implementations against the reference implementation, for example. -// -// MD5 algorithm -// ------------- -// The Message-Digest 5 (MD5) is a well known hash function. We have provided -// an implementation derived from the RSA Data Security, Inc. MD5 Message-Digest -// Algorithm for your use. Our implmentation only changes the interface of this -// reference code. You must include the `md5_utils.h` header for access to these -// functions. -// -// Processing The Decoded Data -// --------------------------- -// Each row of the image is passed to the MD5 accumulator. First the Y plane -// is processed, then U, then V. It is important to honor the image's `stride` -// values. - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "aom/aom_decoder.h" -#include "aom/aomdx.h" -#include "common/md5_utils.h" -#include "common/tools_common.h" -#include "common/video_reader.h" - -static void get_image_md5(const aom_image_t *img, unsigned char digest[16]) { - int plane, y; - MD5Context md5; - - MD5Init(&md5); - - for (plane = 0; plane < 3; ++plane) { - const unsigned char *buf = img->planes[plane]; - const int stride = img->stride[plane]; - const int w = plane ? (img->d_w + 1) >> 1 : img->d_w; - const int h = plane ? (img->d_h + 1) >> 1 : img->d_h; - - for (y = 0; y < h; ++y) { - MD5Update(&md5, buf, w); - buf += stride; - } - } - - MD5Final(digest, &md5); -} - -static void print_md5(FILE *stream, unsigned char digest[16]) { - int i; - - for (i = 0; i < 16; ++i) fprintf(stream, "%02x", digest[i]); -} - -static const char *exec_name; - -void usage_exit(void) { - fprintf(stderr, "Usage: %s <infile> <outfile>\n", exec_name); - exit(EXIT_FAILURE); -} - -int main(int argc, char **argv) { - int frame_cnt = 0; - FILE *outfile = NULL; - aom_codec_ctx_t codec; - AvxVideoReader *reader = NULL; - const AvxVideoInfo *info = NULL; - const AvxInterface *decoder = NULL; - - exec_name = argv[0]; - - if (argc != 3) die("Invalid number of arguments."); - - reader = aom_video_reader_open(argv[1]); - if (!reader) die("Failed to open %s for reading.", argv[1]); - - if (!(outfile = fopen(argv[2], "wb"))) - die("Failed to open %s for writing.", argv[2]); - - info = aom_video_reader_get_info(reader); - - decoder = get_aom_decoder_by_fourcc(info->codec_fourcc); - if (!decoder) die("Unknown input codec."); - - printf("Using %s\n", aom_codec_iface_name(decoder->codec_interface())); - - if (aom_codec_dec_init(&codec, decoder->codec_interface(), NULL, 0)) - die_codec(&codec, "Failed to initialize decoder"); - - while (aom_video_reader_read_frame(reader)) { - aom_codec_iter_t iter = NULL; - aom_image_t *img = NULL; - size_t frame_size = 0; - const unsigned char *frame = - aom_video_reader_get_frame(reader, &frame_size); - if (aom_codec_decode(&codec, frame, frame_size, NULL)) - die_codec(&codec, "Failed to decode frame"); - - while ((img = aom_codec_get_frame(&codec, &iter)) != NULL) { - unsigned char digest[16]; - - get_image_md5(img, digest); - print_md5(outfile, digest); - fprintf(outfile, " img-%dx%d-%04d.i420\n", img->d_w, img->d_h, - ++frame_cnt); - } - } - - printf("Processed %d frames.\n", frame_cnt); - if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec."); - - aom_video_reader_close(reader); - - fclose(outfile); - return EXIT_SUCCESS; -} |