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tools/venc_data_dump: factor out demux/decode code

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It can be shared with other simple demux/decode tools.
This commit is contained in:
Anton Khirnov 2021-06-30 11:44:24 +02:00
parent 7f660035fe
commit 94170e0411
5 changed files with 249 additions and 122 deletions
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1
tests/ref/fate/source
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@ -20,5 +20,6 @@ Headers without standard inclusion guards:
compat/djgpp/math.h
compat/float/float.h
compat/float/limits.h
tools/decode_simple.h
Use of av_clip() where av_clip_uintp2() could be used:
Use of av_clip() where av_clip_intp2() could be used:

2
tools/Makefile
View File

@ -17,6 +17,8 @@ tools/target_dem_fuzzer.o: tools/target_dem_fuzzer.c
tools/target_io_dem_fuzzer.o: tools/target_dem_fuzzer.c
$(COMPILE_C) -DIO_FLAT=0
tools/venc_data_dump$(EXESUF): tools/decode_simple.o
OUTDIRS += tools
clean::

157
tools/decode_simple.c Normal file
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@ -0,0 +1,157 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* shared code for simple demux/decode tools */
#include <stdlib.h>
#include <string.h>
#include "decode_simple.h"
#include "libavformat/avformat.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/packet.h"
#include "libavutil/dict.h"
#include "libavutil/error.h"
#include "libavutil/frame.h"
static int decode_read(DecodeContext *dc, int flush)
{
const int ret_done = flush ? AVERROR_EOF : AVERROR(EAGAIN);
int ret = 0;
while (ret >= 0 &&
(dc->max_frames == 0 || dc->decoder->frame_number < dc->max_frames)) {
ret = avcodec_receive_frame(dc->decoder, dc->frame);
if (ret < 0) {
if (ret == AVERROR_EOF) {
int err = dc->process_frame(dc, NULL);
if (err < 0)
return err;
}
return (ret == ret_done) ? 0 : ret;
}
ret = dc->process_frame(dc, dc->frame);
av_frame_unref(dc->frame);
if (ret < 0)
return ret;
if (dc->max_frames && dc->decoder->frame_number == dc->max_frames)
return 1;
}
return (dc->max_frames == 0 || dc->decoder->frame_number < dc->max_frames) ? 0 : 1;
}
int ds_run(DecodeContext *dc)
{
int ret;
ret = avcodec_open2(dc->decoder, NULL, &dc->decoder_opts);
if (ret < 0)
return ret;
while (ret >= 0) {
ret = av_read_frame(dc->demuxer, dc->pkt);
if (ret < 0)
goto flush;
if (dc->pkt->stream_index != dc->stream->index) {
av_packet_unref(dc->pkt);
continue;
}
ret = avcodec_send_packet(dc->decoder, dc->pkt);
if (ret < 0) {
fprintf(stderr, "Error decoding: %d\n", ret);
return ret;
}
av_packet_unref(dc->pkt);
ret = decode_read(dc, 0);
if (ret < 0) {
fprintf(stderr, "Error decoding: %d\n", ret);
return ret;
} else if (ret > 0)
return 0;
}
flush:
avcodec_send_packet(dc->decoder, NULL);
ret = decode_read(dc, 1);
if (ret < 0) {
fprintf(stderr, "Error flushing: %d\n", ret);
return ret;
}
return 0;
}
void ds_free(DecodeContext *dc)
{
av_dict_free(&dc->decoder_opts);
av_frame_free(&dc->frame);
av_packet_free(&dc->pkt);
avcodec_free_context(&dc->decoder);
avformat_close_input(&dc->demuxer);
}
int ds_open(DecodeContext *dc, const char *url, int stream_idx)
{
const AVCodec *codec;
int ret;
memset(dc, 0, sizeof(*dc));
dc->pkt = av_packet_alloc();
dc->frame = av_frame_alloc();
if (!dc->pkt || !dc->frame) {
ret = AVERROR(ENOMEM);
goto fail;
}
ret = avformat_open_input(&dc->demuxer, url, NULL, NULL);
if (ret < 0) {
fprintf(stderr, "Error opening input file: %d\n", ret);
return ret;
}
if (stream_idx < 0 || stream_idx >= dc->demuxer->nb_streams)
return AVERROR(EINVAL);
dc->stream = dc->demuxer->streams[stream_idx];
codec = avcodec_find_decoder(dc->stream->codecpar->codec_id);
if (!codec)
return AVERROR_DECODER_NOT_FOUND;
dc->decoder = avcodec_alloc_context3(codec);
if (!dc->decoder)
return AVERROR(ENOMEM);
return 0;
fail:
ds_free(dc);
return ret;
}

53
tools/decode_simple.h Normal file
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@ -0,0 +1,53 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* shared code for simple demux/decode tools */
#ifndef DECODE_SIMPLE_H
#define DECODE_SIMPLE_H
#include "libavformat/avformat.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/packet.h"
#include "libavutil/dict.h"
#include "libavutil/frame.h"
typedef struct DecodeContext {
AVFormatContext *demuxer;
AVStream *stream;
AVCodecContext *decoder;
AVPacket *pkt;
AVFrame *frame;
int (*process_frame)(struct DecodeContext *dc, AVFrame *frame);
void *opaque;
AVDictionary *decoder_opts;
int max_frames;
} DecodeContext;
int ds_open(DecodeContext *dc, const char *url, int stream_idx);
void ds_free(DecodeContext *dc);
int ds_run(DecodeContext *dc);
#endif /* DECODE_SIMPLE_H */

158
tools/venc_data_dump.c
View File

@ -20,6 +20,8 @@
#include <stdint.h>
#include <stdlib.h>
#include "decode_simple.h"
#include "libavutil/common.h"
#include "libavutil/dict.h"
#include "libavutil/error.h"
@ -29,85 +31,44 @@
#include "libavcodec/avcodec.h"
static int decode_read(AVCodecContext *decoder, AVFrame *frame, int flush, int max_frames)
static int process_frame(DecodeContext *dc, AVFrame *frame)
{
const int ret_done = flush ? AVERROR_EOF : AVERROR(EAGAIN);
int ret = 0;
AVFrameSideData *sd;
while (ret >= 0 &&
(max_frames == 0 || decoder->frame_number < max_frames)) {
AVFrameSideData *sd;
if (!frame)
return 0;
ret = avcodec_receive_frame(decoder, frame);
if (ret < 0)
return (ret == ret_done) ? 0 : ret;
fprintf(stdout, "frame %d\n", dc->decoder->frame_number - 1);
fprintf(stdout, "frame %d\n", decoder->frame_number - 1);
sd = av_frame_get_side_data(frame, AV_FRAME_DATA_VIDEO_ENC_PARAMS);
if (sd) {
AVVideoEncParams *par = (AVVideoEncParams*)sd->data;
sd = av_frame_get_side_data(frame, AV_FRAME_DATA_VIDEO_ENC_PARAMS);
if (sd) {
AVVideoEncParams *par = (AVVideoEncParams*)sd->data;
fprintf(stdout, "AVVideoEncParams %d\n", par->type);
fprintf(stdout, "qp %d\n", par->qp);
for (int i = 0; i < FF_ARRAY_ELEMS(par->delta_qp); i++)
for (int j = 0; j < FF_ARRAY_ELEMS(par->delta_qp[i]); j++) {
if (par->delta_qp[i][j])
fprintf(stdout, "delta_qp[%d][%d] %"PRId32"\n", i, j, par->delta_qp[i][j]);
}
fprintf(stdout, "AVVideoEncParams %d\n", par->type);
fprintf(stdout, "qp %d\n", par->qp);
for (int i = 0; i < FF_ARRAY_ELEMS(par->delta_qp); i++)
for (int j = 0; j < FF_ARRAY_ELEMS(par->delta_qp[i]); j++) {
if (par->delta_qp[i][j])
fprintf(stdout, "delta_qp[%d][%d] %"PRId32"\n", i, j, par->delta_qp[i][j]);
}
if (par->nb_blocks) {
fprintf(stdout, "nb_blocks %d\n", par->nb_blocks);
for (int i = 0; i < par->nb_blocks; i++) {
AVVideoBlockParams *b = av_video_enc_params_block(par, i);
if (par->nb_blocks) {
fprintf(stdout, "nb_blocks %d\n", par->nb_blocks);
for (int i = 0; i < par->nb_blocks; i++) {
AVVideoBlockParams *b = av_video_enc_params_block(par, i);
fprintf(stdout, "block %d %d:%d %dx%d %"PRId32"\n",
i, b->src_x, b->src_y, b->w, b->h, b->delta_qp);
}
fprintf(stdout, "block %d %d:%d %dx%d %"PRId32"\n",
i, b->src_x, b->src_y, b->w, b->h, b->delta_qp);
}
}
av_frame_unref(frame);
if (max_frames && decoder->frame_number == max_frames)
return 1;
}
return (max_frames == 0 || decoder->frame_number < max_frames) ? 0 : 1;
}
static int decoder_init(AVFormatContext *demuxer, int stream_idx,
AVCodecContext **dec, AVDictionary **opts)
{
const AVCodec *codec;
int ret;
if (stream_idx < 0 || stream_idx >= demuxer->nb_streams)
return AVERROR(EINVAL);
codec = avcodec_find_decoder(demuxer->streams[stream_idx]->codecpar->codec_id);
if (!codec)
return AVERROR_DECODER_NOT_FOUND;
*dec = avcodec_alloc_context3(codec);
if (!*dec)
return AVERROR(ENOMEM);
ret = avcodec_open2(*dec, NULL, opts);
if (ret < 0)
return ret;
return 0;
}
int main(int argc, char **argv)
{
AVFormatContext *demuxer = NULL;
AVCodecContext *decoder = NULL;
AVDictionary *opts = NULL;
AVPacket *pkt = NULL;
AVFrame *frame = NULL;
DecodeContext dc;
unsigned int stream_idx, max_frames;
const char *filename, *thread_type = NULL, *nb_threads = NULL;
@ -126,70 +87,23 @@ int main(int argc, char **argv)
thread_type = argv[5];
}
ret = av_dict_set(&opts, "threads", nb_threads, 0);
ret |= av_dict_set(&opts, "thread_type", thread_type, 0);
ret |= av_dict_set(&opts, "export_side_data", "venc_params", 0);
ret = avformat_open_input(&demuxer, filename, NULL, NULL);
if (ret < 0) {
fprintf(stderr, "Error opening input file: %d\n", ret);
return ret;
}
ret = decoder_init(demuxer, stream_idx, &decoder, &opts);
if (ret < 0) {
fprintf(stderr, "Error initializing decoder\n");
ret = ds_open(&dc, filename, stream_idx);
if (ret < 0)
goto finish;
}
pkt = av_packet_alloc();
frame = av_frame_alloc();
if (!pkt || !frame) {
ret = AVERROR(ENOMEM);
dc.process_frame = process_frame;
dc.max_frames = max_frames;
ret = av_dict_set(&dc.decoder_opts, "threads", nb_threads, 0);
ret |= av_dict_set(&dc.decoder_opts, "thread_type", thread_type, 0);
ret |= av_dict_set(&dc.decoder_opts, "export_side_data", "venc_params", 0);
if (ret < 0)
goto finish;
}
while (ret >= 0) {
ret = av_read_frame(demuxer, pkt);
if (ret < 0)
goto flush;
if (pkt->stream_index != stream_idx) {
av_packet_unref(pkt);
continue;
}
ret = avcodec_send_packet(decoder, pkt);
if (ret < 0) {
fprintf(stderr, "Error decoding: %d\n", ret);
goto finish;
}
av_packet_unref(pkt);
ret = decode_read(decoder, frame, 0, max_frames);
if (ret < 0) {
fprintf(stderr, "Error decoding: %d\n", ret);
goto finish;
} else if (ret > 0) {
ret = 0;
goto finish;
}
}
flush:
avcodec_send_packet(decoder, NULL);
ret = decode_read(decoder, frame, 1, max_frames);
if (ret < 0) {
fprintf(stderr, "Error flushing: %d\n", ret);
goto finish;
}
ret = 0;
ret = ds_run(&dc);
finish:
av_dict_free(&opts);
av_packet_free(&pkt);
av_frame_free(&frame);
avcodec_free_context(&decoder);
avformat_close_input(&demuxer);
ds_free(&dc);
return ret;
}