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// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <atomic>
#include <thread>
#include "AudioCommon/SoundStream.h"
#include "Common/Event.h"
#include "Core/Core.h"
#include "Core/HW/AudioInterface.h"
#include "Core/HW/SystemTimers.h"
#if defined HAVE_OPENAL && HAVE_OPENAL
#ifdef _WIN32
#include <OpenAL/include/al.h>
#include <OpenAL/include/alc.h>
#include <OpenAL/include/alext.h>
#elif defined __APPLE__
#include <OpenAL/al.h>
#include <OpenAL/alc.h>
#else
#include <AL/al.h>
#include <AL/alc.h>
#include <AL/alext.h>
#endif
#ifdef __APPLE__
// Avoid conflict with objc.h (on Windows, ST uses the system BOOL type, so this doesn't work)
#define BOOL SoundTouch_BOOL
#endif
#define ST_NO_EXCEPTION_HANDLING
#include <soundtouch/SoundTouch.h>
#include <soundtouch/STTypes.h>
#ifdef __APPLE__
#undef BOOL
#endif
// 16 bit Stereo
#define SFX_MAX_SOURCE 1
#define OAL_MAX_BUFFERS 32
#define OAL_MAX_SAMPLES 256
#define STEREO_CHANNELS 2
#define SURROUND_CHANNELS 6 // number of channels in surround mode
#define SIZE_SHORT 2
#define SIZE_FLOAT 4 // size of a float in bytes
#define FRAME_STEREO_SHORT STEREO_CHANNELS * SIZE_SHORT
#define FRAME_STEREO_FLOAT STEREO_CHANNELS * SIZE_FLOAT
#define FRAME_SURROUND_FLOAT SURROUND_CHANNELS * SIZE_FLOAT
#define FRAME_SURROUND_SHORT SURROUND_CHANNELS * SIZE_SHORT
#endif
class OpenALStream final : public SoundStream
{
#if defined HAVE_OPENAL && HAVE_OPENAL
public:
OpenALStream() : uiSource(0)
{
}
bool Start() override;
void SoundLoop() override;
void SetVolume(int volume) override;
void Stop() override;
void Clear(bool mute) override;
void Update() override;
static bool isValid() { return true; }
private:
std::thread thread;
std::atomic<bool> m_run_thread;
Common::Event soundSyncEvent;
short realtimeBuffer[OAL_MAX_SAMPLES * STEREO_CHANNELS];
soundtouch::SAMPLETYPE sampleBuffer[OAL_MAX_SAMPLES * SURROUND_CHANNELS * OAL_MAX_BUFFERS];
ALuint uiBuffers[OAL_MAX_BUFFERS];
ALuint uiSource;
ALfloat fVolume;
u8 numBuffers;
#endif // HAVE_OPENAL
};
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