ffmpeg_demuxer.h | Explore in Territory

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Implements the Demuxer interface using FFmpeg's libavformat.  At this time
// will support demuxing any audio/video format thrown at it.  The streams
// output mime types audio/x-ffmpeg and video/x-ffmpeg and include an integer
// key FFmpegCodecID which contains the CodecID enumeration value.  The CodecIDs
// can be used to create and initialize the corresponding FFmpeg decoder.
//
// FFmpegDemuxer sets the duration of pipeline during initialization by using
// the duration of the longest audio/video stream.
//
// NOTE: since FFmpegDemuxer reads packets sequentially without seeking, media
// files with very large drift between audio/video streams may result in
// excessive memory consumption.
//
// When stopped, FFmpegDemuxer and FFmpegDemuxerStream release all callbacks
// and buffered packets.  Reads from a stopped FFmpegDemuxerStream will not be
// replied to.

#ifndef MEDIA_FILTERS_FFMPEG_DEMUXER_H_
#define MEDIA_FILTERS_FFMPEG_DEMUXER_H_

#include <stddef.h>
#include <stdint.h>

#include <memory>
#include <string>
#include <vector>

#include "base/containers/flat_map.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/task/sequenced_task_runner.h"
#include "base/time/time.h"
#include "media/base/audio_decoder_config.h"
#include "media/base/decoder_buffer_queue.h"
#include "media/base/demuxer.h"
#include "media/base/media_log.h"
#include "media/base/pipeline_status.h"
#include "media/base/timestamp_constants.h"
#include "media/base/video_decoder_config.h"
#include "media/ffmpeg/scoped_av_packet.h"
#include "media/filters/blocking_url_protocol.h"
#include "media/media_buildflags.h"

// FFmpeg forward declarations.
struct AVFormatContext;
struct AVRational;
struct AVStream;

namespace media {

class MediaLog;
class FFmpegBitstreamConverter;
class FFmpegDemuxer;
class FFmpegGlue;

class MEDIA_EXPORT FFmpegDemuxerStream : public DemuxerStream { … };

class MEDIA_EXPORT FFmpegDemuxer : public Demuxer { … };

}  // namespace media

#endif  // MEDIA_FILTERS_FFMPEG_DEMUXER_H_
chromium/media/filters/ffmpeg_demuxer.h
