mirror of https://git.videolan.org/git/ffmpeg.git
tools/venc_data_dump: factor out demux/decode code
It can be shared with other simple demux/decode tools.
This commit is contained in:
Anton Khirnov
parent
7f660035fe
commit
94170e0411
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@ -20,5 +20,6 @@ Headers without standard inclusion guards:
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compat/djgpp/math.h
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compat/float/float.h
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compat/float/limits.h
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tools/decode_simple.h
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Use of av_clip() where av_clip_uintp2() could be used:
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Use of av_clip() where av_clip_intp2() could be used:
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@ -17,6 +17,8 @@ tools/target_dem_fuzzer.o: tools/target_dem_fuzzer.c
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tools/target_io_dem_fuzzer.o: tools/target_dem_fuzzer.c
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$(COMPILE_C) -DIO_FLAT=0
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tools/venc_data_dump$(EXESUF): tools/decode_simple.o
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OUTDIRS += tools
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clean::
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@ -0,0 +1,157 @@
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/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* shared code for simple demux/decode tools */
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#include <stdlib.h>
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#include <string.h>
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#include "decode_simple.h"
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#include "libavformat/avformat.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/packet.h"
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#include "libavutil/dict.h"
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#include "libavutil/error.h"
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#include "libavutil/frame.h"
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static int decode_read(DecodeContext *dc, int flush)
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{
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const int ret_done = flush ? AVERROR_EOF : AVERROR(EAGAIN);
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int ret = 0;
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while (ret >= 0 &&
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(dc->max_frames == 0 || dc->decoder->frame_number < dc->max_frames)) {
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ret = avcodec_receive_frame(dc->decoder, dc->frame);
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if (ret < 0) {
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if (ret == AVERROR_EOF) {
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int err = dc->process_frame(dc, NULL);
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if (err < 0)
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return err;
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}
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return (ret == ret_done) ? 0 : ret;
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}
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ret = dc->process_frame(dc, dc->frame);
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av_frame_unref(dc->frame);
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if (ret < 0)
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return ret;
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if (dc->max_frames && dc->decoder->frame_number == dc->max_frames)
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return 1;
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}
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return (dc->max_frames == 0 || dc->decoder->frame_number < dc->max_frames) ? 0 : 1;
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}
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int ds_run(DecodeContext *dc)
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{
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int ret;
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ret = avcodec_open2(dc->decoder, NULL, &dc->decoder_opts);
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if (ret < 0)
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return ret;
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while (ret >= 0) {
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ret = av_read_frame(dc->demuxer, dc->pkt);
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if (ret < 0)
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goto flush;
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if (dc->pkt->stream_index != dc->stream->index) {
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av_packet_unref(dc->pkt);
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continue;
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}
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ret = avcodec_send_packet(dc->decoder, dc->pkt);
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if (ret < 0) {
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fprintf(stderr, "Error decoding: %d\n", ret);
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return ret;
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}
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av_packet_unref(dc->pkt);
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ret = decode_read(dc, 0);
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if (ret < 0) {
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fprintf(stderr, "Error decoding: %d\n", ret);
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return ret;
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} else if (ret > 0)
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return 0;
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}
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flush:
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avcodec_send_packet(dc->decoder, NULL);
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ret = decode_read(dc, 1);
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if (ret < 0) {
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fprintf(stderr, "Error flushing: %d\n", ret);
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return ret;
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}
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return 0;
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}
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void ds_free(DecodeContext *dc)
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{
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av_dict_free(&dc->decoder_opts);
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av_frame_free(&dc->frame);
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av_packet_free(&dc->pkt);
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avcodec_free_context(&dc->decoder);
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avformat_close_input(&dc->demuxer);
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}
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int ds_open(DecodeContext *dc, const char *url, int stream_idx)
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{
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const AVCodec *codec;
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int ret;
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memset(dc, 0, sizeof(*dc));
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dc->pkt = av_packet_alloc();
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dc->frame = av_frame_alloc();
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if (!dc->pkt || !dc->frame) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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ret = avformat_open_input(&dc->demuxer, url, NULL, NULL);
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if (ret < 0) {
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fprintf(stderr, "Error opening input file: %d\n", ret);
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return ret;
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}
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if (stream_idx < 0 || stream_idx >= dc->demuxer->nb_streams)
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return AVERROR(EINVAL);
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dc->stream = dc->demuxer->streams[stream_idx];
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codec = avcodec_find_decoder(dc->stream->codecpar->codec_id);
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if (!codec)
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return AVERROR_DECODER_NOT_FOUND;
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dc->decoder = avcodec_alloc_context3(codec);
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if (!dc->decoder)
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return AVERROR(ENOMEM);
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return 0;
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fail:
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ds_free(dc);
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return ret;
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}
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@ -0,0 +1,53 @@
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/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* shared code for simple demux/decode tools */
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#ifndef DECODE_SIMPLE_H
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#define DECODE_SIMPLE_H
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#include "libavformat/avformat.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/packet.h"
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#include "libavutil/dict.h"
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#include "libavutil/frame.h"
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typedef struct DecodeContext {
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AVFormatContext *demuxer;
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AVStream *stream;
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AVCodecContext *decoder;
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AVPacket *pkt;
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AVFrame *frame;
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int (*process_frame)(struct DecodeContext *dc, AVFrame *frame);
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void *opaque;
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AVDictionary *decoder_opts;
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int max_frames;
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} DecodeContext;
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int ds_open(DecodeContext *dc, const char *url, int stream_idx);
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void ds_free(DecodeContext *dc);
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int ds_run(DecodeContext *dc);
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#endif /* DECODE_SIMPLE_H */
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@ -20,6 +20,8 @@
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#include <stdint.h>
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#include <stdlib.h>
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#include "decode_simple.h"
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#include "libavutil/common.h"
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#include "libavutil/dict.h"
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#include "libavutil/error.h"
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@ -29,85 +31,44 @@
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#include "libavcodec/avcodec.h"
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static int decode_read(AVCodecContext *decoder, AVFrame *frame, int flush, int max_frames)
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static int process_frame(DecodeContext *dc, AVFrame *frame)
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{
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const int ret_done = flush ? AVERROR_EOF : AVERROR(EAGAIN);
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int ret = 0;
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AVFrameSideData *sd;
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while (ret >= 0 &&
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(max_frames == 0 || decoder->frame_number < max_frames)) {
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AVFrameSideData *sd;
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if (!frame)
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return 0;
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ret = avcodec_receive_frame(decoder, frame);
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if (ret < 0)
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return (ret == ret_done) ? 0 : ret;
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fprintf(stdout, "frame %d\n", dc->decoder->frame_number - 1);
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fprintf(stdout, "frame %d\n", decoder->frame_number - 1);
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sd = av_frame_get_side_data(frame, AV_FRAME_DATA_VIDEO_ENC_PARAMS);
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if (sd) {
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AVVideoEncParams *par = (AVVideoEncParams*)sd->data;
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sd = av_frame_get_side_data(frame, AV_FRAME_DATA_VIDEO_ENC_PARAMS);
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if (sd) {
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AVVideoEncParams *par = (AVVideoEncParams*)sd->data;
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fprintf(stdout, "AVVideoEncParams %d\n", par->type);
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fprintf(stdout, "qp %d\n", par->qp);
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for (int i = 0; i < FF_ARRAY_ELEMS(par->delta_qp); i++)
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for (int j = 0; j < FF_ARRAY_ELEMS(par->delta_qp[i]); j++) {
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if (par->delta_qp[i][j])
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fprintf(stdout, "delta_qp[%d][%d] %"PRId32"\n", i, j, par->delta_qp[i][j]);
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}
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fprintf(stdout, "AVVideoEncParams %d\n", par->type);
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fprintf(stdout, "qp %d\n", par->qp);
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for (int i = 0; i < FF_ARRAY_ELEMS(par->delta_qp); i++)
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for (int j = 0; j < FF_ARRAY_ELEMS(par->delta_qp[i]); j++) {
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if (par->delta_qp[i][j])
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fprintf(stdout, "delta_qp[%d][%d] %"PRId32"\n", i, j, par->delta_qp[i][j]);
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}
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if (par->nb_blocks) {
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fprintf(stdout, "nb_blocks %d\n", par->nb_blocks);
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for (int i = 0; i < par->nb_blocks; i++) {
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AVVideoBlockParams *b = av_video_enc_params_block(par, i);
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if (par->nb_blocks) {
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fprintf(stdout, "nb_blocks %d\n", par->nb_blocks);
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for (int i = 0; i < par->nb_blocks; i++) {
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AVVideoBlockParams *b = av_video_enc_params_block(par, i);
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fprintf(stdout, "block %d %d:%d %dx%d %"PRId32"\n",
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i, b->src_x, b->src_y, b->w, b->h, b->delta_qp);
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}
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fprintf(stdout, "block %d %d:%d %dx%d %"PRId32"\n",
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i, b->src_x, b->src_y, b->w, b->h, b->delta_qp);
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}
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}
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av_frame_unref(frame);
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if (max_frames && decoder->frame_number == max_frames)
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return 1;
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}
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return (max_frames == 0 || decoder->frame_number < max_frames) ? 0 : 1;
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}
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static int decoder_init(AVFormatContext *demuxer, int stream_idx,
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AVCodecContext **dec, AVDictionary **opts)
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{
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const AVCodec *codec;
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int ret;
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if (stream_idx < 0 || stream_idx >= demuxer->nb_streams)
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return AVERROR(EINVAL);
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codec = avcodec_find_decoder(demuxer->streams[stream_idx]->codecpar->codec_id);
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if (!codec)
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return AVERROR_DECODER_NOT_FOUND;
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*dec = avcodec_alloc_context3(codec);
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if (!*dec)
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return AVERROR(ENOMEM);
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ret = avcodec_open2(*dec, NULL, opts);
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if (ret < 0)
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return ret;
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return 0;
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}
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int main(int argc, char **argv)
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{
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AVFormatContext *demuxer = NULL;
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AVCodecContext *decoder = NULL;
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AVDictionary *opts = NULL;
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AVPacket *pkt = NULL;
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AVFrame *frame = NULL;
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DecodeContext dc;
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unsigned int stream_idx, max_frames;
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const char *filename, *thread_type = NULL, *nb_threads = NULL;
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@ -126,70 +87,23 @@ int main(int argc, char **argv)
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thread_type = argv[5];
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}
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ret = av_dict_set(&opts, "threads", nb_threads, 0);
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ret |= av_dict_set(&opts, "thread_type", thread_type, 0);
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ret |= av_dict_set(&opts, "export_side_data", "venc_params", 0);
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ret = avformat_open_input(&demuxer, filename, NULL, NULL);
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if (ret < 0) {
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fprintf(stderr, "Error opening input file: %d\n", ret);
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return ret;
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}
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ret = decoder_init(demuxer, stream_idx, &decoder, &opts);
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if (ret < 0) {
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fprintf(stderr, "Error initializing decoder\n");
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ret = ds_open(&dc, filename, stream_idx);
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if (ret < 0)
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goto finish;
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}
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pkt = av_packet_alloc();
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frame = av_frame_alloc();
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if (!pkt || !frame) {
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ret = AVERROR(ENOMEM);
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dc.process_frame = process_frame;
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dc.max_frames = max_frames;
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ret = av_dict_set(&dc.decoder_opts, "threads", nb_threads, 0);
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ret |= av_dict_set(&dc.decoder_opts, "thread_type", thread_type, 0);
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ret |= av_dict_set(&dc.decoder_opts, "export_side_data", "venc_params", 0);
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if (ret < 0)
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goto finish;
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}
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while (ret >= 0) {
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ret = av_read_frame(demuxer, pkt);
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if (ret < 0)
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goto flush;
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if (pkt->stream_index != stream_idx) {
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av_packet_unref(pkt);
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continue;
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}
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ret = avcodec_send_packet(decoder, pkt);
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if (ret < 0) {
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fprintf(stderr, "Error decoding: %d\n", ret);
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goto finish;
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}
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av_packet_unref(pkt);
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ret = decode_read(decoder, frame, 0, max_frames);
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if (ret < 0) {
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fprintf(stderr, "Error decoding: %d\n", ret);
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goto finish;
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} else if (ret > 0) {
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ret = 0;
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goto finish;
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}
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}
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flush:
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avcodec_send_packet(decoder, NULL);
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ret = decode_read(decoder, frame, 1, max_frames);
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if (ret < 0) {
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fprintf(stderr, "Error flushing: %d\n", ret);
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goto finish;
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}
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ret = 0;
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ret = ds_run(&dc);
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finish:
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av_dict_free(&opts);
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av_packet_free(&pkt);
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av_frame_free(&frame);
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avcodec_free_context(&decoder);
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avformat_close_input(&demuxer);
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ds_free(&dc);
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return ret;
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}
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