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/* SPDX-License-Identifier: BSD-3-Clause */
/* SPDX-FileCopyrightText: Olivier Lapicque */
/* SPDX-FileCopyrightText: OpenMPT Project Developers and Contributors */
#pragma once
#include "openmpt/all/BuildSettings.hpp"
#include "SoundDevice.hpp"
#include "SoundDeviceBase.hpp"
#include "mpt/base/detect.hpp"
#include "openmpt/logging/Logger.hpp"
#if MPT_OS_LINUX || MPT_OS_MACOSX_OR_IOS || MPT_OS_FREEBSD
// we use c++11 in native support library
#include <atomic>
#include <condition_variable>
#include <memory>
#include <mutex>
#include <thread>
#endif // MPT_OS_LINUX || MPT_OS_MACOSX_OR_IOS || MPT_OS_FREEBSD
#if MPT_OS_WINDOWS
#include <mmreg.h>
#include <windows.h>
#endif // MPT_OS_WINDOWS
OPENMPT_NAMESPACE_BEGIN
namespace SoundDevice
{
#if MPT_OS_WINDOWS
bool FillWaveFormatExtensible(WAVEFORMATEXTENSIBLE &WaveFormat, const SoundDevice::Settings &m_Settings);
#endif // MPT_OS_WINDOWS
#if MPT_OS_WINDOWS
class CSoundDeviceWithThread;
class CPriorityBooster
{
private:
SoundDevice::SysInfo m_SysInfo;
bool m_BoostPriority;
int m_Priority;
DWORD task_idx;
HANDLE hTask;
int oldPriority;
public:
CPriorityBooster(SoundDevice::SysInfo sysInfo, bool boostPriority, const mpt::winstring &priorityClass, int priority);
~CPriorityBooster();
};
class CAudioThread
{
friend class CPeriodicWaker;
private:
CSoundDeviceWithThread &m_SoundDevice;
mpt::winstring m_MMCSSClass;
double m_WakeupInterval;
HANDLE m_hAudioWakeUp;
HANDLE m_hPlayThread;
HANDLE m_hAudioThreadTerminateRequest;
HANDLE m_hAudioThreadGoneIdle;
HANDLE m_hHardwareWakeupEvent;
DWORD m_dwPlayThreadId;
LONG m_AudioThreadActive;
static DWORD WINAPI AudioThreadWrapper(LPVOID user);
DWORD AudioThread();
bool IsActive();
public:
CAudioThread(CSoundDeviceWithThread &SoundDevice);
CAudioThread(const CAudioThread &) = delete;
CAudioThread &operator=(const CAudioThread &) = delete;
~CAudioThread();
void Activate();
void Deactivate();
void SetWakeupEvent(HANDLE ev);
void SetWakeupInterval(double seconds);
};
class CSoundDeviceWithThread
: public SoundDevice::Base
{
friend class CAudioThread;
protected:
CAudioThread m_AudioThread;
private:
void FillAudioBufferLocked();
protected:
void SetWakeupEvent(HANDLE ev);
void SetWakeupInterval(double seconds);
public:
CSoundDeviceWithThread(ILogger &logger, SoundDevice::Info info, SoundDevice::SysInfo sysInfo);
virtual ~CSoundDeviceWithThread();
bool InternalStart();
void InternalStop();
virtual void StartFromSoundThread() = 0;
virtual void StopFromSoundThread() = 0;
};
#endif // MPT_OS_WINDOWS
#if MPT_OS_LINUX || MPT_OS_MACOSX_OR_IOS || MPT_OS_FREEBSD
class semaphore
{
private:
unsigned int count;
unsigned int waiters_count;
std::mutex mutex;
std::condition_variable count_nonzero;
public:
semaphore(unsigned int initial_count = 0)
: count(initial_count)
, waiters_count(0)
{
return;
}
~semaphore()
{
return;
}
void wait()
{
std::unique_lock<std::mutex> l(mutex);
waiters_count++;
while(count == 0)
{
count_nonzero.wait(l);
}
waiters_count--;
count--;
}
void post()
{
std::unique_lock<std::mutex> l(mutex);
if(waiters_count > 0)
{
count_nonzero.notify_one();
}
count++;
}
void lock()
{
wait();
}
void unlock()
{
post();
}
};
class ThreadPriorityGuardImpl;
class ThreadPriorityGuard
{
private:
std::unique_ptr<ThreadPriorityGuardImpl> impl;
public:
ThreadPriorityGuard(ILogger &logger, bool active, bool realtime, int niceness, int rt_priority);
~ThreadPriorityGuard();
};
class ThreadBase
: public SoundDevice::Base
{
private:
semaphore m_ThreadStarted;
std::atomic<bool> m_ThreadStopRequest;
std::thread m_Thread;
private:
static void ThreadProcStatic(ThreadBase *this_);
void ThreadProc();
public:
ThreadBase(ILogger &logger, SoundDevice::Info info, SoundDevice::SysInfo sysInfo);
virtual ~ThreadBase();
bool InternalStart();
void InternalStop();
virtual void InternalStartFromSoundThread() = 0;
virtual void InternalWaitFromSoundThread() = 0;
virtual void InternalStopFromSoundThread() = 0;
};
#endif // MPT_OS_LINUX || MPT_OS_MACOSX_OR_IOS || MPT_OS_FREEBSD
} // namespace SoundDevice
OPENMPT_NAMESPACE_END
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