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/******************************************************************************
*
* Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* Contact: Nokia Corporation (qt-info@nokia.com)
*
* $QT_BEGIN_LICENSE:BSD$
* 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 author organization 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 <COPYRIGHT HOLDER> 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.
*
* $QT_END_LICENSE$
*
*****************************************************************************/
#ifndef __GE_IGA_AUDIOBUFFER__
#define __GE_IGA_AUDIOBUFFER__
#include <QFile>
#include "GEInterfaces.h"
namespace GE {
class CAudioBufferPlayInstance;
class CAudioBuffer; // forward declaration
typedef AUDIO_SAMPLE_TYPE(*SAMPLE_FUNCTION_TYPE)(CAudioBuffer *abuffer, int pos, int channel);
class CAudioBuffer { // container for a sound
public:
CAudioBuffer();
virtual ~CAudioBuffer();
static CAudioBuffer* loadWav( QString fileName );
static CAudioBuffer* loadWav( FILE *wavFile ); // support for stdio
void reallocate( int length );
inline void* getRawData() { return m_data; }
inline int getDataLength() { return m_dataLength; }
inline int getBytesPerSample() { return (m_bitsPerSample>>3); }
inline int getBitsPerSample() { return m_bitsPerSample; }
inline int getSamplesPerSec() { return m_samplesPerSec; }
inline short getNofChannels() { return m_nofChannels; }
inline SAMPLE_FUNCTION_TYPE getSampleFunction() { return m_sampleFunction; }
// static implementations of sample functions
static AUDIO_SAMPLE_TYPE sampleFunction8bitMono( CAudioBuffer *abuffer, int pos, int channel );
static AUDIO_SAMPLE_TYPE sampleFunction16bitMono( CAudioBuffer *abuffer, int pos, int channel );
static AUDIO_SAMPLE_TYPE sampleFunction8bitStereo( CAudioBuffer *abuffer, int pos, int channel );
static AUDIO_SAMPLE_TYPE sampleFunction16bitStereo( CAudioBuffer *abuffer, int pos, int channel );
CAudioBufferPlayInstance *playWithMixer( GE::CAudioMixer &mixer );
protected:
SAMPLE_FUNCTION_TYPE m_sampleFunction;
short m_nofChannels;
void *m_data;
int m_dataLength; // in bytes
short m_bitsPerSample;
bool m_signedData;
int m_samplesPerSec;
};
class CAudioBufferPlayInstance : public IAudioSource {
public:
CAudioBufferPlayInstance();
CAudioBufferPlayInstance( CAudioBuffer *start_playing );
virtual ~CAudioBufferPlayInstance();
void playBuffer( CAudioBuffer *startPlaying, float volume, float fixedSpeed, int loopTimes = 0 ); // looptimes -1 = loop forever
void setSpeed( float speed );
void setLeftVolume( float lvol );
void setRightVolume( float rvol );
inline void setLoopTimes( int ltimes ) { m_loopTimes = ltimes; }
void stop();
int pullAudio( AUDIO_SAMPLE_TYPE *target, int bufferLength );
bool canBeDestroyed();
bool isPlaying() { if (m_buffer) return true; else return false; }
inline bool isFinished() { return m_finished; }
inline bool destroyWhenFinished() { return m_destroyWhenFinished; }
inline void setDestroyWhenFinished( bool set ) { m_destroyWhenFinished = set; }
protected:
int mixBlock( AUDIO_SAMPLE_TYPE *target, int bufferLength );
bool m_finished;
bool m_destroyWhenFinished;
int m_fixedPos;
int m_fixedInc;
int m_fixedLeftVolume;
int m_fixedRightVolume;
int m_fixedCenter;
int m_loopTimes;
CAudioBuffer *m_buffer;
};
};
#endif
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