/usr/include/sipxtapi/mp/MpAudioAbstract.h is in libsipxtapi-dev 3.3.0~test17-2.1.
This file is owned by root:root, with mode 0o644.
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// Copyright (C) 2006-2010 SIPez LLC. All rights reserved.
// Licensed to SIPfoundry under a Contributor Agreement.
//
// Copyright (C) 2004-2006 SIPfoundry Inc.
// Licensed by SIPfoundry under the LGPL license.
//
// Copyright (C) 2004-2006 Pingtel Corp. All rights reserved.
// Licensed to SIPfoundry under a Contributor Agreement.
//
// $$
///////////////////////////////////////////////////////////////////////////////
#ifndef MP_AUDIO_ABSTRACT_H
#define MP_AUDIO_ABSTRACT_H
#include <mp/MpTypes.h>
#include <os/iostream>
#include <stdio.h>
typedef short AudioSample;
typedef unsigned char AudioByte;
//formats we support
#define AUDIO_FORMAT_UNKNOWN 0
#define AUDIO_FORMAT_WAV 1
#define AUDIO_FORMAT_AU 2
class MpAudioAbstract {
public:
/* ============================ CREATORS ================================== */
///@name Creators
//@{
/// Default Constructor.
MpAudioAbstract(void);
/// Copy Constructor
MpAudioAbstract(MpAudioAbstract *audio);
/// Destructor
virtual ~MpAudioAbstract();
//@}
public:
///@name Non classfied
//@{
/// Returns number of samples actually read, 0 on error.
virtual size_t getSamples(AudioSample *, size_t) = 0;
/// read length of bytes
virtual size_t readBytes(AudioByte * buff, size_t length);
/// get bytes size of the audio file
virtual size_t getBytesSize();
/// get decompression type of the audio file
virtual int getDecompressionType();
//@}
public:
///@name MpAudioAbstract related operations
//@{
/// get previous audio
MpAudioAbstract *getPreviousAudio(void);
/// set previous audio to a
void setPreviousAudio(MpAudioAbstract *a);
/// get next audio
MpAudioAbstract *getNextAudio(void);
/// set next audio to a
void setNextAudio(MpAudioAbstract *a);
//@}
public:
///@name Sample related functions
//@{
/// Set the sampling rate to s
virtual void setSamplingRate(long s);
/// Set sampling rate recursively
virtual void setSamplingRateRecursive(long s);
/// TODO: the meaning of this function, get the prefered Sampling rate
virtual void minMaxSamplingRate(long *min, long *max, long *prefer);
/// negotiate the sampling rate
virtual void negotiateSamplingRate(void);
/// Return the sampling rate
virtual long getSamplingRate(void);
//@}
public:
///@name Channel related functions
//@{
///Set channel to ch
virtual void setChannels(int ch);
///Set channel recusively
virtual void setChannelsRecursive(int s);
///Get prefered channel
virtual void minMaxChannels(int *min, int *max, int *preferred) ;
/// negotiate channel
virtual void negotiateChannels(void);
/// Return the channels
virtual int getChannels(void);
/// Set audio object format
virtual void setAudioFormat(int type) { mDetectedFormat = type;}
/// Get audio object format
virtual int getAudioFormat() { return mDetectedFormat;}
/// Return true if file loaded ok.
bool isOk() {return mbIsOk;}
//@}
/* ============================ PRIVATE ================================== */
private:
// pointers to MpAudioAbstract itself then
MpAudioAbstract *mPrevious; ///< object to get data from
MpAudioAbstract *mNext; ///< object pulling data from us
private: // sampling Rate related stuff
long mSamplingRate;
bool mSamplingRateFrozen;
private: // channel related stuff
long mChannels;
bool mChannelsFrozen;
int mDetectedFormat;
protected:
bool mbIsOk; ///< If file loaded ok.
};
#endif
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