mirror of
https://github.com/RGBCube/serenity
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fd3ffd88ce
Now that we're able to find the nearest keyframe, we can have a fast seeking mode that only seeks to keyframes, so that it doesn't have to also decode inter frames until it reaches the timestamp. The default is still accurate seeking, so that the entire seeking implementation can be tested.
40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
/*
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* Copyright (c) 2022, Gregory Bertilson <zaggy1024@gmail.com>
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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/NonnullOwnPtr.h>
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#include <LibCore/Object.h>
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#include <LibVideo/DecoderError.h>
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#include <LibVideo/Sample.h>
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#include <LibVideo/Track.h>
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namespace Video {
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class 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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DecoderErrorOr<NonnullOwnPtr<VideoSample>> get_next_video_sample_for_track(Track track)
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{
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VERIFY(track.type() == TrackType::Video);
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auto sample = TRY(get_next_sample_for_track(track));
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VERIFY(sample->is_video_sample());
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return sample.release_nonnull<VideoSample>();
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}
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// Returns the timestamp of the keyframe that was seeked to.
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virtual DecoderErrorOr<Time> seek_to_most_recent_keyframe(Track track, Time timestamp) = 0;
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virtual DecoderErrorOr<Time> duration() = 0;
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protected:
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virtual DecoderErrorOr<NonnullOwnPtr<Sample>> get_next_sample_for_track(Track track) = 0;
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};
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}
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