mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-26 01:35:08 +02:00
75231e63b1
...and abstract away the stream/cursor blocking/aborting functionality so that demuxers can implement or ignore those methods as they see fit. This is a step towards implementing a wrapper demuxer for MSE streams.
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
/*
|
|
* Copyright (c) 2022-2025, Gregory Bertilson <gregory@ladybird.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/AtomicRefCounted.h>
|
|
#include <AK/EnumBits.h>
|
|
#include <AK/NonnullOwnPtr.h>
|
|
#include <LibCore/EventReceiver.h>
|
|
#include <LibMedia/IncrementallyPopulatedStream.h>
|
|
|
|
#include "CodecID.h"
|
|
#include "CodedFrame.h"
|
|
#include "DecoderError.h"
|
|
#include "Track.h"
|
|
|
|
namespace Media {
|
|
|
|
enum class DemuxerSeekOptions : u8 {
|
|
None = 0,
|
|
Force = 1 << 0,
|
|
};
|
|
|
|
AK_ENUM_BITWISE_OPERATORS(DemuxerSeekOptions);
|
|
|
|
enum class DemuxerSeekResult : u8 {
|
|
MovedPosition,
|
|
KeptCurrentPosition,
|
|
};
|
|
|
|
class Demuxer : public AtomicRefCounted<Demuxer> {
|
|
public:
|
|
virtual ~Demuxer() = default;
|
|
|
|
virtual DecoderErrorOr<void> create_context_for_track(Track const&) = 0;
|
|
|
|
virtual DecoderErrorOr<Vector<Track>> get_tracks_for_type(TrackType) = 0;
|
|
// Returns the container's preferred track for a given track type. This must return a value if any track of the
|
|
// given type is present.
|
|
virtual DecoderErrorOr<Optional<Track>> get_preferred_track_for_type(TrackType) = 0;
|
|
|
|
virtual DecoderErrorOr<CodedFrame> get_next_sample_for_track(Track const&) = 0;
|
|
|
|
virtual DecoderErrorOr<CodecID> get_codec_id_for_track(Track const&) = 0;
|
|
|
|
virtual DecoderErrorOr<ReadonlyBytes> get_codec_initialization_data_for_track(Track const&) = 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<DemuxerSeekResult> seek_to_most_recent_keyframe(Track const&, AK::Duration timestamp, DemuxerSeekOptions = DemuxerSeekOptions::None) = 0;
|
|
|
|
virtual DecoderErrorOr<AK::Duration> duration_of_track(Track const&) = 0;
|
|
virtual DecoderErrorOr<AK::Duration> total_duration() = 0;
|
|
|
|
virtual void set_blocking_reads_aborted_for_track(Track const&) = 0;
|
|
virtual void reset_blocking_reads_aborted_for_track(Track const&) = 0;
|
|
virtual bool is_read_blocked_for_track(Track const&) = 0;
|
|
};
|
|
|
|
}
|