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https://github.com/gnif/LookingGlass.git
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947f03ede6
Open the optional audio broker from a passive worker and move bounded playback and capture packets through a transport-neutral audio hub. Attach audio sources after transport initialization without making audio driver availability part of display transport readiness.
84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include "CSRWLock.h"
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#include "audio/CLGAudioDevice.h"
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#include "transport/IAudioSource.h"
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#include "transport/ITransport.h"
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#include <memory>
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class CAudioHub final : public IAudioTarget,
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private ILGAudioDeviceEvents
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{
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private:
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CSRWLock m_lifecycleLock;
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CSRWLock m_callbackLock;
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CSRWLock m_lock;
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std::unique_ptr<ILGAudioDevice> m_device;
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IAudioSource * m_source = nullptr;
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BackendId m_backend = 0;
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uint32_t m_epoch = 0;
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bool m_deviceStarted = false;
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bool m_active = false;
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bool m_running = false;
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bool m_reserved = false;
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bool m_failed = false;
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bool m_failurePending = false;
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bool m_deactivating = false;
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uint64_t m_deactivationGeneration = 0;
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bool m_stopped = false;
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bool StartDevice();
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bool MarkFailed(IAudioSource * source);
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void LGAudioState(const AudioEndpointStatus& state) override;
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AudioResult LGAudioPlayback(const AudioPacket& packet,
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const uint8_t * data, size_t size) override;
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void LGAudioCaptureReady() override;
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public:
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CAudioHub();
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explicit CAudioHub(std::unique_ptr<ILGAudioDevice> device);
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~CAudioHub() override;
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CAudioHub(const CAudioHub&) = delete;
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CAudioHub& operator=(const CAudioHub&) = delete;
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// Start only creates the passive connector worker. Broker absence or an
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// incompatible/busy broker is reported through state and is not failure.
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bool Start();
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bool Bind(BackendId backend, uint32_t epoch, IAudioSource& source);
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void Unbind(BackendId backend, uint32_t epoch);
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bool TakeFailure(SourceKey& source);
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LGAudioDeviceSnapshot Snapshot() const;
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void Stop();
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AudioResult SetAudioActive(bool active) override;
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AudioResult SendCapture(const AudioPacket& packet,
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const uint8_t * data, size_t size) override;
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AudioResult SetClockFeedback(
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const AudioClockFeedback& feedback) override;
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void PlaybackReceiveReady() override;
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void AudioFailed() override;
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};
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