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111 lines
2.9 KiB
C++
111 lines
2.9 KiB
C++
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <string>
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#include <vector>
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#include <cubeb/cubeb.h>
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#include "audio_core/sink/sink.h"
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namespace Core {
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class System;
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}
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namespace AudioCore::Sink {
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class SinkStream;
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/**
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* Cubeb backend sink, holds multiple output streams and is responsible for sinking samples to
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* hardware. Used by Audio Render, Audio In and Audio Out.
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*/
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class CubebSink final : public Sink {
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public:
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explicit CubebSink(std::string_view device_id);
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~CubebSink() override;
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/**
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* Create a new sink stream.
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*
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* @param system - Core system.
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* @param system_channels - Number of channels the audio system expects.
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* May differ from the device's channel count.
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* @param name - Name of this stream.
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* @param type - Type of this stream, render/in/out.
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* @param event - Audio render only, a signal used to prevent the renderer running too
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* fast.
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* @return A pointer to the created SinkStream
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*/
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SinkStream* AcquireSinkStream(Core::System& system, u32 system_channels,
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const std::string& name, StreamType type) override;
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/**
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* Close a given stream.
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*
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* @param stream - The stream to close.
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*/
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void CloseStream(SinkStream* stream) override;
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/**
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* Close all streams.
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*/
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void CloseStreams() override;
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/**
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* Pause all streams.
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*/
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void PauseStreams() override;
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/**
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* Unpause all streams.
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*/
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void UnpauseStreams() override;
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/**
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* Get the device volume. Set from calls to the IAudioDevice service.
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*
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* @return Volume of the device.
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*/
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f32 GetDeviceVolume() const override;
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/**
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* Set the device volume. Set from calls to the IAudioDevice service.
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*
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* @param volume - New volume of the device.
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*/
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void SetDeviceVolume(f32 volume) override;
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/**
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* Set the system volume. Comes from the audio system using this stream.
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*
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* @param volume - New volume of the system.
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*/
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void SetSystemVolume(f32 volume) override;
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private:
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/// Backend Cubeb context
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cubeb* ctx{};
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/// Cubeb id of the actual hardware output device
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cubeb_devid output_device{};
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/// Cubeb id of the actual hardware input device
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cubeb_devid input_device{};
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/// Vector of streams managed by this sink
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std::vector<SinkStreamPtr> sink_streams{};
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#ifdef _WIN32
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/// Cubeb required COM to be initialized multi-threaded on Windows
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u32 com_init_result = 0;
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#endif
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};
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/**
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* Get a list of conencted devices from Cubeb.
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*
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* @param capture - Return input (capture) devices if true, otherwise output devices.
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*/
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std::vector<std::string> ListCubebSinkDevices(bool capture);
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} // namespace AudioCore::Sink
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