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https://github.com/dolphin-emu/dolphin.git
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76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
// Copyright 2008 Dolphin 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 <thread>
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#include "AudioCommon/SoundStream.h"
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#include "Common/Event.h"
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#include "Core/Core.h"
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#include "Core/HW/AudioInterface.h"
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#include "Core/HW/SystemTimers.h"
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#ifdef _WIN32
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#include <al.h>
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#include <alc.h>
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#include <alext.h>
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// OpenAL requires a minimum of two buffers, three or more recommended
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#define OAL_BUFFERS 3
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#define OAL_MAX_FRAMES 4096
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#define STEREO_CHANNELS 2
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#define SURROUND_CHANNELS 6 // number of channels in surround mode
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#define SIZE_SHORT 2
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#define SIZE_INT32 4
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#define SIZE_FLOAT 4 // size of a float in bytes
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#define FRAME_STEREO_SHORT STEREO_CHANNELS* SIZE_SHORT
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#define FRAME_SURROUND_FLOAT SURROUND_CHANNELS* SIZE_FLOAT
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#define FRAME_SURROUND_SHORT SURROUND_CHANNELS* SIZE_SHORT
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#define FRAME_SURROUND_INT32 SURROUND_CHANNELS* SIZE_INT32
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#endif // _WIN32
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// From AL_EXT_float32
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#ifndef AL_FORMAT_STEREO_FLOAT32
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#define AL_FORMAT_STEREO_FLOAT32 0x10011
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#endif
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// From AL_EXT_MCFORMATS
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#ifndef AL_FORMAT_51CHN16
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#define AL_FORMAT_51CHN16 0x120B
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#endif
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#ifndef AL_FORMAT_51CHN32
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#define AL_FORMAT_51CHN32 0x120C
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#endif
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// Only X-Fi on Windows supports the alext AL_FORMAT_STEREO32 alext for now,
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// but it is not documented or in "OpenAL/include/al.h".
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#ifndef AL_FORMAT_STEREO32
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#define AL_FORMAT_STEREO32 0x1203
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#endif
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class OpenALStream final : public SoundStream
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{
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#ifdef _WIN32
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public:
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OpenALStream() = default;
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~OpenALStream() override;
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bool Init() override;
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void SetVolume(int volume) override;
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bool SetRunning(bool running) override;
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static bool IsValid();
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private:
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void SoundLoop();
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std::thread m_thread;
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Common::Flag m_run_thread;
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std::vector<short> m_realtime_buffer;
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std::array<ALuint, OAL_BUFFERS> m_buffers{};
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ALuint m_source = 0;
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ALfloat m_volume = 1;
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#endif // _WIN32
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};
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