94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/*******************************************************************************
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* Copyright 2009-2024 Jörg Müller
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#pragma once
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#ifdef PIPEWIRE_PLUGIN
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#define AUD_BUILD_PLUGIN
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#endif
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/**
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* @file PipeWireDevice.h
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* @ingroup plugin
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* The PipeWireDevice class.
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*/
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#include <pipewire/pipewire.h>
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#include "devices/MixingThreadDevice.h"
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AUD_NAMESPACE_BEGIN
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/**
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* This device plays back through PipeWire, the simple direct media layer.
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*/
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class AUD_PLUGIN_API PipeWireDevice : public MixingThreadDevice
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{
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private:
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pw_stream* m_stream;
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pw_thread_loop* m_thread;
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std::unique_ptr<pw_stream_events> m_events;
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bool m_active{false};
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/// Synchronizer.
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bool m_getSynchronizerStartTime{false};
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int64_t m_synchronizerStartTime{0};
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double m_synchronizerStartPosition{0.0};
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AUD_LOCAL static void handleStateChanged(void* device_ptr, enum pw_stream_state old, enum pw_stream_state state, const char* error);
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/**
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* Mixes the next bytes into the buffer.
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* \param data The PipeWire device.
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*/
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AUD_LOCAL static void mixAudioBuffer(void* device_ptr);
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// delete copy constructor and operator=
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PipeWireDevice(const PipeWireDevice&) = delete;
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PipeWireDevice& operator=(const PipeWireDevice&) = delete;
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protected:
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void preMixingWork(bool playing);
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virtual void playing(bool playing);
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public:
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/**
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* Opens the PipeWire audio device for playback.
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* \param specs The wanted audio specification.
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* \param buffersize The size of the internal buffer.
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* \note The specification really used for opening the device may differ.
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* \exception Exception Thrown if the audio device cannot be opened.
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*/
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PipeWireDevice(const std::string& name, DeviceSpecs specs, int buffersize = AUD_DEFAULT_BUFFER_SIZE);
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/**
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* Closes the PipeWire audio device.
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*/
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virtual ~PipeWireDevice();
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virtual void seekSynchronizer(double time);
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virtual double getSynchronizerPosition();
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virtual void playSynchronizer();
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virtual void stopSynchronizer();
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/**
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* Registers this plugin.
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*/
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static void registerPlugin();
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};
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AUD_NAMESPACE_END
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