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// sound.h
/******************************************************************************
*
* MiXViews - an X window system based sound & data editor/processor
*
* Copyright (c) 1993, 1994 Regents of the University of California
*
* Author: Douglas Scott
* Date: December 13, 1994
*
* Permission to use, copy and modify this software and its documentation
* for research and/or educational purposes and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation. The author reserves the right to distribute this
* software and its documentation. The University of California and the author
* make no representations about the suitability of this software for any
* purpose, and in no event shall University of California be liable for any
* damage, loss of data, or profits resulting from its use.
* It is provided "as is" without express or implied warranty.
*
******************************************************************************/
// The class for storing, playing, and editing digital sound information.
#ifndef SOUND_H
#ifdef __GNUG__
#pragma interface
#endif
#define SOUND_H
#include "localdefs.h"
#include "data.h"
class DataFile;
class Header;
class SoundHeader;
class Converter;
class StatusAction;
class Sound : public Data {
typedef Data Super;
public: // class methods
static int defaultSampleRate() { return default_SampleRate; }
static DataType defaultDataType() { return default_DataType; }
static const char* defaultFileSuffix();
static boolean setDefaultSampleRate(int rate) {
default_SampleRate = rate; return true;
}
static boolean setDefaultDataType(DataType type) {
default_DataType = type; return true;
}
public: // object methods
Sound(double dur=0.1, int srate=44100, int nchans=1,
DataType type=ShortData);
Sound(int len, int srate=44100, int nchans=1, DataType type=ShortData);
virtual ~Sound();
redefined Data *newData();
redefined Data *newData(int length);
redefined Data *clone(const Range &selection);
redefined Data *clone(const Range &selection, const Range &chans);
redefined void copyFrom(const Data *src);
#ifdef sgi
redefined int read(DataFile* f, Header* header = nil);
redefined int write(DataFile *f);
#endif
// information methods
redefined int sRate() const { return sr; }
redefined void information(class Controller *);
int nSamps() const { return length(); }
int nChans() const { return channels(); }
double duration() const;
double peakAmp();
// sound data changing methods
redefined int changeSRate(int rate, boolean filter);
redefined int changeDataType(DataType newType);
// action methods
void rescale();
int play(Converter *, StatusAction *);
int record(Converter *, StatusAction *);
redefined FileType fileType() const { return Sound_Data; }
redefined const char *fileSuffix() const;
// information methods for display objects
redefined const char* windowClassName() const { return "SoundWindow"; }
redefined const char* horizontalScaleModeAttribute() const {
return "SoundWindowHorizontalScale";
}
redefined const char* channelDisplayAttribute() const {
return "SoundWindowDisplayChannels";
}
redefined const char* defaultDirAttribute() const {
return "DefaultSoundFileDir";
}
redefined Range frameRange(RangeUnit units) const;
redefined const char* frameRangeLabel(RangeUnit units) const;
redefined Scale::NumberDisplay frameRangeDisplay(RangeUnit units) const {
return (units == FrameTimeUnit) ?
Scale::AsFloat : Data::frameRangeDisplay(units);
}
redefined Range limits(int chan=0, boolean real=false) const;
redefined void Notify() { Data::Notify(); }
redefined Header* createHeader(DataFile *, boolean reading);
protected:
#ifdef sgi
redefined int write(DataFile* f, Header* header = nil) {
return Super::write(f, header);
}
#endif
redefined void checkValues();
redefined void readFromHeader(Header *);
// protected ctors for virtual ctors
Sound(const Sound *s) : Data(s), sr(s->sr) {}
Sound(const Sound *s, int nwlen) : Data(s, nwlen), sr(s->sr) {}
// protected ctors for cloning
Sound(const Sound *, const Range &);
Sound(const Sound *, const Range &, const Range &);
virtual const char* getDataPointer() const;
int doPlay(Converter *, StatusAction *);
int doRecord(Converter *, StatusAction *);
#ifdef NX_COMPILER_RELEASE_3_0
Data::checkValues();
#endif
private: // static for class state
static int default_SampleRate;
static DataType default_DataType;
static char* default_FileSuffix;
private:
int sr;
friend class RealConverter; // FIX ME -- should only know of Converter
};
#endif
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