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AudioCoreDriver.h
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AudioCoreDriver.h
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/*
Copyright (c) 2005, Andreas Varga <sid@galway.c64.org>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _AUDIOCOREDRIVER_H_
#define _AUDIOCOREDRIVER_H_
#include <CoreAudio/AudioHardware.h>
#include "AudioDriver.h"
#define USE_NEW_API 1
class PlayerLibSidplay;
class AudioCoreDriver : public AudioDriver
{
public:
AudioCoreDriver();
~AudioCoreDriver();
void initialize(PlayerLibSidplay* player, int sampleRate = 44100, int bitsPerSample = 16);
void deinitialize();
bool startPlayback();
void stopPlayback();
bool startPreRenderedBufferPlayback();
void stopPreRenderedBufferPlayback();
void setPreRenderedBuffer(short* inBuffer, int inBufferLength);
inline bool getIsInitialized() { return mIsInitialized; }
inline int getSampleRate() { return (int)mStreamFormat.mSampleRate; }
inline short* getSampleBuffer() { return mRetSampleBuffer; }
inline int getNumSamplesInBuffer() { return mNumSamplesInBuffer; }
inline float* getSpectrumBuffer() { return mSpectrumBuffer; }
inline int getNumSamplesInSpectrum() { return mNumSamplesInBuffer/2; }
inline void setBufferUnderrunDetected(bool flag) { mBufferUnderrunDetected = flag; if (!flag) mBufferUnderrunCount = 0; }
inline bool getBufferUnderrunDetected() { return mBufferUnderrunDetected; };
inline int getBufferUnderrunCount() { return mBufferUnderrunCount; };
inline void setSpectrumTemporalSmoothing(float s) { assert(s >= 0.0f && s < 1.0f); mSpectrumTemporalSmoothing = s; };
inline bool getIsPlaying() { return mIsPlaying; }
inline float getVolume() { return mVolume; }
void setVolume(float volume);
inline bool getIsPlayingPreRenderedBuffer() { return mIsPlayingPreRenderedBuffer; }
inline float getPreRenderedBufferVolume() { return mPreRenderedBufferVolume; }
void setPreRenderedBufferVolume(float volume);
inline int getPreRenderedBufferPlaybackPosition() { return mPreRenderedBufferPlaybackPosition; }
inline void setPreRenderedBufferPlaybackPosition(int inPosition) { mPreRenderedBufferPlaybackPosition = inPosition; }
private:
inline float getScaleFactor() { return mScaleFactor; }
inline float getPreRenderedBufferScaleFactor() { return mPreRenderedBufferScaleFactor; }
void fillBuffer();
static OSStatus emulationPlaybackProc(AudioDeviceID inDevice,
const AudioTimeStamp *inNow,
const AudioBufferList *inInputData,
const AudioTimeStamp *inInputTime,
AudioBufferList *outOutputData,
const AudioTimeStamp *inOutputTime,
void *inClientData);
static OSStatus preRenderedBufferPlaybackProc(AudioDeviceID inDevice,
const AudioTimeStamp *inNow,
const AudioBufferList *inInputData,
const AudioTimeStamp *inInputTime,
AudioBufferList *outOutputData,
const AudioTimeStamp *inOutputTime,
void *inClientData);
static OSStatus queryStreamFormat(AudioDeviceID deviceID, AudioStreamBasicDescription& streamFormat);
#if USE_NEW_API
static OSStatus streamFormatChanged(AudioObjectID inObjectID,
UInt32 inNumberAddresses,
const AudioObjectPropertyAddress inAddresses[],
void* inClientData);
static OSStatus overloadDetected(AudioObjectID inObjectID,
UInt32 inNumberAddresses,
const AudioObjectPropertyAddress inAddresses[],
void* inClientData);
static OSStatus deviceChanged(AudioObjectID inObjectID,
UInt32 inNumberAddresses,
const AudioObjectPropertyAddress inAddresses[],
void* inClientData);
#else //was
static OSStatus deviceChanged(AudioHardwarePropertyID inPropertyID, void* inClientData);
static OSStatus streamFormatChanged(AudioDeviceID inDevice,
UInt32 inChannel,
Boolean isInput,
AudioDevicePropertyID inPropertyID,
void* inClientData);
static OSStatus overloadDetected(AudioDeviceID inDevice,
UInt32 inChannel,
Boolean isInput,
AudioDevicePropertyID inPropertyID,
void* inClientData);
#endif
bool mIsInitialized;
PlayerLibSidplay* mPlayer;
AudioDeviceID mDeviceID;
AudioStreamBasicDescription mStreamFormat;
AudioDeviceIOProcID mEmulationPlaybackProcID;
AudioDeviceIOProcID mPreRenderedBufferPlaybackProcID;
int mNumSamplesInBuffer;
short* mSampleBuffer;
short* mRetSampleBuffer;
short* mSampleBuffer1;
short* mSampleBuffer2;
float* mSpectrumBuffer;
float mSpectrumTemporalSmoothing;
bool mFastForward;
bool mIsPlaying;
float mScaleFactor;
float mVolume;
bool mIsPlayingPreRenderedBuffer;
short* mPreRenderedBuffer;
int mPreRenderedBufferSampleCount;
int mPreRenderedBufferPlaybackPosition;
float mPreRenderedBufferVolume;
float mPreRenderedBufferScaleFactor;
bool mBufferUnderrunDetected;
int mBufferUnderrunCount;
int mInstanceId;
static const int sBufferUnderrunLimit = 1;
};
#endif // _AUDIOCOREDRIVER_H_