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authorMatt A. Tobin <email@mattatobin.com>2020-04-07 23:30:51 -0400
committerMatt A. Tobin <email@mattatobin.com>2020-04-07 23:30:51 -0400
commit5545a8983ff0ef1fb52e64aef8e66fa9b13c1cbb (patch)
tree45d55e3e5e73c4255c4d71258d9be5b2d004d28f /third_party/aom/examples/decode_with_drops.c
parent50f1986697a7412e4160976fa5e11217b4ef1f44 (diff)
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Move aom source to a sub-directory under media/libaom
There is no damned reason to treat this differently than any other media lib given its license and there never was.
Diffstat (limited to 'third_party/aom/examples/decode_with_drops.c')
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diff --git a/third_party/aom/examples/decode_with_drops.c b/third_party/aom/examples/decode_with_drops.c
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-/*
- * 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.
- */
-
-// Decode With Drops Example
-// =========================
-//
-// This is an example utility which drops a series of frames, as specified
-// on the command line. This is useful for observing the error recovery
-// features of the codec.
-//
-// Usage
-// -----
-// This example adds a single argument to the `simple_decoder` example,
-// which specifies the range or pattern of frames to drop. The parameter is
-// parsed as follows:
-//
-// Dropping A Range Of Frames
-// --------------------------
-// To drop a range of frames, specify the starting frame and the ending
-// frame to drop, separated by a dash. The following command will drop
-// frames 5 through 10 (base 1).
-//
-// $ ./decode_with_drops in.ivf out.i420 5-10
-//
-//
-// Dropping A Pattern Of Frames
-// ----------------------------
-// To drop a pattern of frames, specify the number of frames to drop and
-// the number of frames after which to repeat the pattern, separated by
-// a forward-slash. The following command will drop 3 of 7 frames.
-// Specifically, it will decode 4 frames, then drop 3 frames, and then
-// repeat.
-//
-// $ ./decode_with_drops in.ivf out.i420 3/7
-//
-//
-// Extra Variables
-// ---------------
-// This example maintains the pattern passed on the command line in the
-// `n`, `m`, and `is_range` variables:
-//
-//
-// Making The Drop Decision
-// ------------------------
-// The example decides whether to drop the frame based on the current
-// frame number, immediately before decoding the frame.
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "aom/aom_decoder.h"
-#include "aom/aomdx.h"
-#include "common/tools_common.h"
-#include "common/video_reader.h"
-
-static const char *exec_name;
-
-void usage_exit(void) {
- fprintf(stderr, "Usage: %s <infile> <outfile> <N-M|N/M>\n", exec_name);
- exit(EXIT_FAILURE);
-}
-
-int main(int argc, char **argv) {
- int frame_cnt = 0;
- FILE *outfile = NULL;
- aom_codec_ctx_t codec;
- const AvxInterface *decoder = NULL;
- AvxVideoReader *reader = NULL;
- const AvxVideoInfo *info = NULL;
- int n = 0;
- int m = 0;
- int is_range = 0;
- char *nptr = NULL;
-
- exec_name = argv[0];
-
- if (argc != 4) 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]);
-
- n = (int)strtol(argv[3], &nptr, 0);
- m = (int)strtol(nptr + 1, NULL, 0);
- is_range = (*nptr == '-');
- if (!n || !m || (*nptr != '-' && *nptr != '/'))
- die("Couldn't parse pattern %s.\n", argv[3]);
-
- 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;
- int skip;
- const unsigned char *frame =
- aom_video_reader_get_frame(reader, &frame_size);
- ++frame_cnt;
-
- skip = (is_range && frame_cnt >= n && frame_cnt <= m) ||
- (!is_range && m - (frame_cnt - 1) % m <= n);
-
- if (!skip) {
- putc('.', stdout);
- 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)
- aom_img_write(img, outfile);
- } else {
- putc('X', stdout);
- }
-
- fflush(stdout);
- }
-
- printf("Processed %d frames.\n", frame_cnt);
- if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec.");
-
- printf("Play: ffplay -f rawvideo -pix_fmt yuv420p -s %dx%d %s\n",
- info->frame_width, info->frame_height, argv[2]);
-
- aom_video_reader_close(reader);
- fclose(outfile);
-
- return EXIT_SUCCESS;
-}