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https://github.com/RGBCube/serenity
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393cfdd5c5
The Demuxer class was changed to return errors for more functions so that all of the underlying reading can be done lazily. Other than that, the demuxer interface is unchanged, and only the underlying reader was modified. The MatroskaDocument class is no more, and MatroskaReader's getter functions replace it. Every MatroskaReader getter beyond the Segment element's position is parsed lazily from the file as needed. This means that all getter functions can return DecoderErrors which must be handled by callers.
39 lines
1,015 B
C++
39 lines
1,015 B
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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virtual DecoderErrorOr<void> seek_to_most_recent_keyframe(Track track, size_t 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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