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media / muxers / mp4_muxer_context.h [blame]
// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_MUXERS_MP4_MUXER_CONTEXT_H_
#define MEDIA_MUXERS_MP4_MUXER_CONTEXT_H_
#include <map>
#include <memory>
#include <optional>
#include "base/sequence_checker.h"
#include "media/base/media_export.h"
namespace media {
class OutputPositionTracker;
// The class provides any additional data that isn't part of box.
// Usually, the data will be set in the middle of box data creation, but
// can be also set during writing box.
class MEDIA_EXPORT Mp4MuxerContext {
public:
explicit Mp4MuxerContext(
std::unique_ptr<OutputPositionTracker> output_position_tracker);
~Mp4MuxerContext();
Mp4MuxerContext(const Mp4MuxerContext&) = delete;
Mp4MuxerContext& operator=(const Mp4MuxerContext&) = delete;
// Per track data that will be provided by the client.
struct Track {
size_t index;
uint32_t timescale;
};
// Track will be created and inserted to vector by the order of arrival
// on Muxer so video or audio index could be different on new stream
// collection (e.g. after putRequest).
// It also needs to set the timescale for the video/audio track that will
// be used to duration conversion.
void SetVideoTrack(Track track);
void SetAudioTrack(Track track);
std::optional<Track> GetVideoTrack() const;
std::optional<Track> GetAudioTrack() const;
OutputPositionTracker& GetOutputPositionTracker() const;
private:
std::optional<Track> video_track_;
std::optional<Track> audio_track_;
std::unique_ptr<OutputPositionTracker> output_position_tracker_;
SEQUENCE_CHECKER(sequence_checker_);
};
} // namespace media
#endif // MEDIA_MUXERS_MP4_MUXER_CONTEXT_H_