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livetrax/libs/backends/wavesaudio/wavesapi/devicemanager/WCMRNativeAudio.h

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2.3 KiB
C++

//----------------------------------------------------------------------------------
//
// Copyright (c) 2008 Waves Audio Ltd. All rights reserved.
//
//! \file WCMRNativeAudio.h
//!
//! WCMRNativeAudio and related class declarations
//!
//---------------------------------------------------------------------------------*/
#ifndef __WCMRNativeAudio_h_
#define __WCMRNativeAudio_h_
#if defined(PLATFORM_WINDOWS)
#include "windows.h"
#endif
#include "pthread.h"
#include "WCRefManager.h"
#include "WCMRAudioDeviceManager.h"
class WCMRNativeAudioDevice; //forward
class WCMRNativeAudioDevice : public WCMRAudioDevice
{
public:
WCMRNativeAudioDevice (WCMRAudioDeviceManager *pManager, bool useMultithreading = true, bool bNoCopy = false) :
WCMRAudioDevice (pManager)
, m_UseMultithreading (useMultithreading)
, m_bNoCopyAudioBuffer(bNoCopy)
{}
virtual ~WCMRNativeAudioDevice () {}
protected:
bool m_UseMultithreading;
bool m_bNoCopyAudioBuffer; ///< This flag determines whether the audio callback performs a copy of audio, or the source/sink perform the copy. It should be true to let source/sink do the copies.
};
//! A dummy device to allow apps to choose "None" in case no real device connection is required.
class WCMRNativeAudioNoneDevice : public WCMRNativeAudioDevice
{
public:
WCMRNativeAudioNoneDevice (WCMRAudioDeviceManager *pManager);
virtual ~WCMRNativeAudioNoneDevice ();
virtual WTErr SetActive (bool newState);///<Prepare/Activate device.
virtual WTErr SetStreaming (bool newState);///<Start/Stop Streaming - should reconnect connections when streaming starts!
virtual WTErr SetCurrentBufferSize (int newSize);///<Change Current Buffer Size : This is a requset, might not be successful at run time!
virtual WTErr UpdateDeviceInfo ();
private:
static void* __SilenceThread(void *This);
void _SilenceThread();
#if defined(PLATFORM_WINDOWS)
void _usleep(uint64_t usec);
#else
inline void _usleep(uint64_t usec) { ::usleep(usec); }
#endif
static const size_t __m_NumInputChannels = 0;
static const size_t __m_NumOutputChannels = 0;
pthread_t m_SilenceThread;
float *_m_inputBuffer;
float *_m_outputBuffer;
static uint64_t __get_time_nanos ();
#if defined (PLATFORM_WINDOWS)
HANDLE _waitableTimerForUsleep;
#endif
};
#endif //#ifndef __WCMRNativeAudio_h_