75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
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/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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#include "media/streaming/media_streaming_utility.h"
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namespace Media {
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namespace Player {
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struct TrackState;
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} // namespace Player
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namespace Streaming {
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class AudioTrack final {
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public:
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// Called from some unspecified thread.
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// Callbacks are assumed to be thread-safe.
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AudioTrack(
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Stream &&stream,
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FnMut<void(const Information &)> ready,
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Fn<void()> error);
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// Called from the main thread.
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// Must be called after 'ready' was invoked.
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void start();
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// Called from the main thread.
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// Non-const, because we subscribe to changes on the first call.
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// Must be called after 'ready' was invoked.
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[[nodiscard]] rpl::producer<TrackState, Error> state();
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// Thread-safe.
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[[nodiscard]] int streamIndex() const;
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[[nodiscard]] AVRational streamTimeBase() const;
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// Called from the same unspecified thread.
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void process(Packet &&packet);
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// Called from the main thread.
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~AudioTrack();
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private:
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// Called from the same unspecified thread.
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[[nodiscard]] bool tryReadFirstFrame(Packet &&packet);
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[[nodiscard]] bool fillStateFromFrame();
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void mixerInit();
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void mixerEnqueue(Packet &&packet);
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void callReady();
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// Accessed from the same unspecified thread.
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Stream _stream;
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// Assumed to be thread-safe.
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FnMut<void(const Information &)> _ready;
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const Fn<void()> _error;
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// First set from the same unspecified thread before _ready is called.
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// After that is immutable.
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AudioMsgId _audioMsgId;
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TrackState _state;
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// Accessed from the main thread.
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base::Subscription _subscription;
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rpl::event_stream<TrackState, Error> _stateChanges;
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};
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} // namespace Streaming
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} // namespace Media
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