mirror of
https://github.com/RGBCube/serenity
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062e0db46c
Since it will become a stream in a little bit, it should behave like all non-trivial stream classes, who are not primarily intended to have shared ownership to make closing behavior more predictable. Across all uses of MappedFile, there is only one use case of shared mapped files in LibVideo, which now uses the thin SharedMappedFile wrapper.
53 lines
1.5 KiB
C++
53 lines
1.5 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/HashMap.h>
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#include <LibVideo/Containers/Demuxer.h>
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#include "Reader.h"
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namespace Video::Matroska {
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class MatroskaDemuxer final : public Demuxer {
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public:
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// FIXME: We should instead accept some abstract data streaming type so that the demuxer
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// can work with non-contiguous data.
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static DecoderErrorOr<NonnullOwnPtr<MatroskaDemuxer>> from_file(StringView filename);
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static DecoderErrorOr<NonnullOwnPtr<MatroskaDemuxer>> from_mapped_file(NonnullOwnPtr<Core::MappedFile> mapped_file);
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static DecoderErrorOr<NonnullOwnPtr<MatroskaDemuxer>> from_data(ReadonlyBytes data);
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MatroskaDemuxer(Reader&& reader)
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: m_reader(move(reader))
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{
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}
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DecoderErrorOr<Vector<Track>> get_tracks_for_type(TrackType type) override;
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DecoderErrorOr<Optional<Duration>> seek_to_most_recent_keyframe(Track track, Duration timestamp, Optional<Duration> earliest_available_sample = OptionalNone()) override;
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DecoderErrorOr<Duration> duration() override;
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protected:
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DecoderErrorOr<NonnullOwnPtr<Sample>> get_next_sample_for_track(Track track) override;
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private:
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struct TrackStatus {
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SampleIterator iterator;
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Optional<Block> block {};
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size_t frame_index { 0 };
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};
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DecoderErrorOr<TrackStatus*> get_track_status(Track track);
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Reader m_reader;
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HashMap<Track, TrackStatus> m_track_statuses;
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};
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}
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