mirror of
https://github.com/zebrajr/ladybird.git
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b1c9a872bc
We no longer need to return a timestamp from the seek function, which makes it much easier to implement backend-agnostically.
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/*
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* Copyright (c) 2022-2025, Gregory Bertilson <gregory@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/AtomicRefCounted.h>
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#include <AK/EnumBits.h>
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#include <AK/NonnullOwnPtr.h>
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#include <LibCore/EventReceiver.h>
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#include "CodecID.h"
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#include "CodedFrame.h"
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#include "DecoderError.h"
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#include "Track.h"
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namespace Media {
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enum class DemuxerSeekOptions : u8 {
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None = 0,
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Force = 1 << 0,
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};
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AK_ENUM_BITWISE_OPERATORS(DemuxerSeekOptions);
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enum class DemuxerSeekResult : u8 {
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MovedPosition,
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KeptCurrentPosition,
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};
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class Demuxer : public AtomicRefCounted<Demuxer> {
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public:
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virtual ~Demuxer() = default;
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virtual DecoderErrorOr<Vector<Track>> get_tracks_for_type(TrackType type) = 0;
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// Returns the container's preferred track for a given track type. This must return a value if any track of the
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// given type is present.
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virtual DecoderErrorOr<Optional<Track>> get_preferred_track_for_type(TrackType type) = 0;
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virtual DecoderErrorOr<CodedFrame> get_next_sample_for_track(Track const& track) = 0;
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virtual DecoderErrorOr<CodecID> get_codec_id_for_track(Track const& track) = 0;
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virtual DecoderErrorOr<ReadonlyBytes> get_codec_initialization_data_for_track(Track const& track) = 0;
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// Returns the timestamp of the keyframe that was seeked to.
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// The value is `Optional` to allow the demuxer to decide not to seek so that it can keep its position
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// in the case that the timestamp is closer to the current time than the nearest keyframe.
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virtual DecoderErrorOr<DemuxerSeekResult> seek_to_most_recent_keyframe(Track const& track, AK::Duration timestamp, DemuxerSeekOptions = DemuxerSeekOptions::None) = 0;
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virtual DecoderErrorOr<AK::Duration> duration_of_track(Track const&) = 0;
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virtual DecoderErrorOr<AK::Duration> total_duration() = 0;
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};
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}
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