ladybird/Libraries/LibMedia/Demuxer.h

39 lines
1.2 KiB
C++

/*
* Copyright (c) 2022, Gregory Bertilson <zaggy1024@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/NonnullOwnPtr.h>
#include <LibCore/EventReceiver.h>
#include "CodecID.h"
#include "DecoderError.h"
#include "Sample.h"
#include "Track.h"
namespace Media {
class Demuxer {
public:
virtual ~Demuxer() = default;
virtual DecoderErrorOr<Vector<Track>> get_tracks_for_type(TrackType type) = 0;
virtual DecoderErrorOr<Sample> get_next_sample_for_track(Track track) = 0;
virtual DecoderErrorOr<CodecID> get_codec_id_for_track(Track track) = 0;
virtual DecoderErrorOr<ReadonlyBytes> get_codec_initialization_data_for_track(Track track) = 0;
// Returns the timestamp of the keyframe that was seeked to.
// The value is `Optional` to allow the demuxer to decide not to seek so that it can keep its position
// in the case that the timestamp is closer to the current time than the nearest keyframe.
virtual DecoderErrorOr<Optional<AK::Duration>> seek_to_most_recent_keyframe(Track track, AK::Duration timestamp, Optional<AK::Duration> earliest_available_sample = OptionalNone()) = 0;
virtual DecoderErrorOr<AK::Duration> duration() = 0;
};
}