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/*
* Copyright (c) 2001 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#define MAX_SLICES 8
// ./fate 2 ./crew_cif out.y4m
#include "config.h"
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_IO_H
#include <io.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "libavcodec/avcodec.h"
#include "libavutil/pixdesc.h"
#include "libavutil/hash.h"
#include "libavutil/bswap.h"
static int header = 0;
static int decode(AVCodecContext *dec_ctx, AVFrame *frame,
AVPacket *pkt)
{
static uint64_t frame_cnt = 0;
int ret;
ret = avcodec_send_packet(dec_ctx, pkt);
if (ret < 0) {
fprintf(stderr, "Error sending a packet for decoding: %s\n", av_err2str(ret));
return ret;
}
while (ret >= 0) {
const AVPixFmtDescriptor *desc;
char sum[AV_HASH_MAX_SIZE * 2 + 1];
struct AVHashContext *hash;
ret = avcodec_receive_frame(dec_ctx, frame);
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
return 0;
} else if (ret < 0) {
fprintf(stderr, "Error during decoding: %s\n", av_err2str(ret));
return ret;
}
if (!header) {
printf(
"#format: frame checksums\n"
"#version: 2\n"
"#hash: MD5\n"
"#tb 0: 1/30\n"
"#media_type 0: video\n"
"#codec_id 0: rawvideo\n"
"#dimensions 0: 352x288\n"
"#sar 0: 128/117\n"
"#stream#, dts, pts, duration, size, hash\n");
header = 1;
}
desc = av_pix_fmt_desc_get(dec_ctx->pix_fmt);
if ((ret = av_hash_alloc(&hash, "md5")) < 0) {
return ret;
}
av_hash_init(hash);
for (int i = 0; i < frame->height; i++)
av_hash_update(hash, &frame->data[0][i * frame->linesize[0]], frame->width);
for (int i = 0; i < frame->height >> desc->log2_chroma_h; i++)
av_hash_update(hash, &frame->data[1][i * frame->linesize[1]], frame->width >> desc->log2_chroma_w);
for (int i = 0; i < frame->height >> desc->log2_chroma_h; i++)
av_hash_update(hash, &frame->data[2][i * frame->linesize[2]], frame->width >> desc->log2_chroma_w);
av_hash_final_hex(hash, sum, av_hash_get_size(hash) * 2 + 1);
printf("0, %10"PRId64", %10"PRId64", 1, %8d, %s\n",
frame_cnt, frame_cnt,
(frame->width * frame->height + 2 * (frame->height >> desc->log2_chroma_h) * (frame->width >> desc->log2_chroma_w)), sum);
frame_cnt += 1;
av_hash_freep(&hash);
}
return 0;
}
int main(int argc, char **argv)
{
const AVCodec *codec = NULL;
AVCodecContext *c = NULL;
AVFrame *frame = NULL;
unsigned int threads;
AVPacket *pkt;
FILE *file = NULL;
char * nal = NULL;
int nals = 0, ret = 0;
char *p;
if (argc < 4) {
fprintf(stderr, "Usage: %s <threads> <input file> <output file>\n", argv[0]);
return -1;
}
if (!(threads = strtoul(argv[1], NULL, 0)))
threads = 1;
else if (threads > MAX_SLICES)
threads = MAX_SLICES;
#ifdef _WIN32
setmode(fileno(stdout), O_BINARY);
#endif
if (!(pkt = av_packet_alloc())) {
return -1;
}
nal = av_malloc(MAX_SLICES * UINT16_MAX + AV_INPUT_BUFFER_PADDING_SIZE);
if (!nal)
goto err;
p = nal;
if (!(codec = avcodec_find_decoder(AV_CODEC_ID_H264))) {
fprintf(stderr, "Codec not found\n");
ret = -1;
goto err;
}
if (!(c = avcodec_alloc_context3(codec))) {
fprintf(stderr, "Could not allocate video codec context\n");
ret = -1;
goto err;
}
c->width = 352;
c->height = 288;
c->flags2 |= AV_CODEC_FLAG2_CHUNKS;
c->thread_type = FF_THREAD_SLICE;
c->thread_count = threads;
if ((ret = avcodec_open2(c, codec, NULL)) < 0) {
fprintf(stderr, "Could not open codec\n");
goto err;
}
#if HAVE_THREADS
if (c->active_thread_type != FF_THREAD_SLICE) {
fprintf(stderr, "Couldn't activate slice threading: %d\n", c->active_thread_type);
ret = -1;
goto err;
}
#else
fprintf(stderr, "WARN: not using threads, only checking decoding slice NALUs\n");
#endif
if (!(frame = av_frame_alloc())) {
fprintf(stderr, "Could not allocate video frame\n");
ret = -1;
goto err;
}
if (!(file = fopen(argv[2], "rb"))) {
fprintf(stderr, "Couldn't open NALU file: %s\n", argv[2]);
ret = -1;
goto err;
}
while(1) {
uint16_t size = 0;
size_t ret = fread(&size, 1, sizeof(uint16_t), file);
if (ret != sizeof(uint16_t))
break;
size = av_be2ne16(size);
ret = fread(p, 1, size, file);
if (ret != size) {
perror("Couldn't read data");
goto err;
}
p += ret;
if (++nals >= threads) {
int decret = 0;
pkt->data = nal;
pkt->size = p - nal;
if ((decret = decode(c, frame, pkt)) < 0) {
goto err;
}
memset(nal, 0, MAX_SLICES * UINT16_MAX + AV_INPUT_BUFFER_PADDING_SIZE);
nals = 0;
p = nal;
}
}
if (nals) {
pkt->data = nal;
pkt->size = p - nal;
if ((ret = decode(c, frame, pkt)) < 0) {
goto err;
}
}
ret = decode(c, frame, NULL);
err:
if (nal)
av_free(nal);
if (file)
fclose(file);
av_frame_free(&frame);
avcodec_free_context(&c);
av_packet_free(&pkt);
return ret;
}
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