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new audio engine backend for native CoreAudio audio I/O, and PortMIDI for MIDI.

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Code builds, runs and functions. Full code review still pending, and some possibly changes to organization of code within the backend is possible
This commit is contained in:
Paul Davis 2014-02-24 14:39:10 -05:00
parent 0a6af1420f
commit 1de00ab6bb
84 changed files with 21936 additions and 0 deletions
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libs/backends/wavesaudio/wavesapi/devicemanager/WCMRNativeAudio.h Normal file
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/*
Copyright (C) 2013 Waves Audio Ltd.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
//----------------------------------------------------------------------------------
//
//
//! \file WCMRNativeAudio.h
//!
//! WCMRNativeAudio and related class declarations
//!
//---------------------------------------------------------------------------------*/
#ifndef __WCMRNativeAudio_h_
#define __WCMRNativeAudio_h_
#if defined(_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!
private:
static void* __SilenceThread(void *This);
void _SilenceThread();
#if defined(_WINDOWS)
void _usleep(uint64_t usec);
#else
inline void _usleep(uint64_t usec) { ::usleep(usec); }
#endif
static const size_t __m_NumInputChannels = 32;
static const size_t __m_NumOutputChannels = 32;
pthread_t m_SilenceThread;
float *_m_inputBuffer;
float *_m_outputBuffer;
static uint64_t __get_time_nanos ();
#if defined (_WINDOWS)
HANDLE _waitableTimerForUsleep;
#endif
};
#endif //#ifndef __WCMRNativeAudio_h_