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ae7f82591b
Most users will only care about the total file duration, and shouldn't be required to determine the file duration from multiple track durations. To facilitate that, add a total_duration() function that returns the demuxer's duration not associated to any particular track.
60 lines
1.9 KiB
C++
60 lines
1.9 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 <LibMedia/Demuxer.h>
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#include "Reader.h"
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namespace Media::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<Track>> get_preferred_track_for_type(TrackType type) override;
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DecoderErrorOr<Optional<AK::Duration>> seek_to_most_recent_keyframe(Track track, AK::Duration timestamp, Optional<AK::Duration> earliest_available_sample = OptionalNone()) override;
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DecoderErrorOr<AK::Duration> duration_of_track(Track const& track) override;
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DecoderErrorOr<AK::Duration> total_duration() override;
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DecoderErrorOr<CodecID> get_codec_id_for_track(Track track) override;
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DecoderErrorOr<ReadonlyBytes> get_codec_initialization_data_for_track(Track track) override;
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DecoderErrorOr<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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CodecID get_codec_id_for_string(FlyString const& codec_id);
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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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