[429088]: kwave / sample.cpp Maximize Restore History

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sample.cpp    2066 lines (1873 with data), 50.7 kB

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// In this file you will find methods for changing time-domain signals
// cut/copy/paste functions are included in sampleedit.cpp
// I/O Functions such as loading/saving are in sampleio.cpp
//Here choose biggest prime factor to be tolerated before
//popping up a requester, when doing a fft
#define MAXPRIME 512
#include "sample.h"
#include <kmsgbox.h>
#include <kprogress.h>
#include <sys/shm.h>
#include <limits.h>
#include <time.h>
#include <math.h>
#include "fftview.h"
#include "sonagram.h"
#include "faderwidget.h"
#include "windowfunction.h"
#include "clipboard.h"
//some definitions of values follow
#define processid 0
#define stopprocess 1
#define samplepointer 2
//id's for functions...
#define FFT 6000
#define SONAGRAM 6001
#define AVERAGEFFT 6002
#define NOISE 5000
#define HULLCURVE 5001
#define ADDSYNTH 5002
#define PULSE 5003
#define ZERO 5004
#define REVERSE 101
#define FADEIN 102
#define FADEOUT 103
#define AMPLIFYMAX 104
#define DELAY 105
#define AMPLIFY 106
#define AMPWITHCLIP 107
#define RATECHANGE 108
#define DISTORT 109
#define MOVINGAVERAGE 110
#define STUTTER 111
#define REQUANTISE 112
#define FILTERCREATE 149
#define FILTER 150
#define FILTERPRESET 11000 //leave space behind this
//the menu structure being allocated by this Object
KWaveMenuItem sample_menus[]=
{
//internalID ,name ,type ,id ,shortcut
{0 ,"&Calculate" ,KMENU ,-1 ,KEXCLUSIVE},
{ZERO ,"&Silence" ,KITEM ,-1 ,-1},
{NOISE ,"&Noise" ,KITEM ,-1 ,-1},
{ADDSYNTH ,"&Additive Synthesis",KITEM ,-1 ,-1},
{PULSE ,"&Pulse Train" ,KITEM ,-1 ,-1},
{0 ,0 ,KSEP ,KSEP ,-1},
{HULLCURVE ,"&Envelope" ,KITEM ,-1 ,-1},
{0 ,0 ,KSEP ,KSEP ,-1},
{0 ,"&Frequencies" ,KMENU ,-1 ,KEXCLUSIVE},
{FFT ,"&Spectrum" ,KITEM ,-1 ,Key_F},
{AVERAGEFFT ,"&Average Spectrum" ,KITEM ,-1 ,SHIFT+Key_F},
{SONAGRAM ,"S&onagram" ,KITEM ,-1 ,-1},
{0 ,0 ,KEND ,KEND ,-1},
{0 ,0 ,KEND ,KEND ,-1},
//second menu
{0 ,"F&x" ,KMENU ,-1 ,KEXCLUSIVE},
{0 ,"&Amplify" ,KMENU ,-1 ,KEXCLUSIVE},
{DISTORT ,"&Distort" ,KITEM ,-1 ,-1},
{FADEIN ,"Fade &in" ,KITEM ,-1 ,-1},
{FADEOUT ,"Fade &out" ,KITEM ,-1 ,-1},
{AMPLIFY ,"&Free" ,KITEM ,-1 ,-1},
{AMPLIFYMAX ,"to &Maximum" ,KITEM ,-1 ,Key_M},
{AMPWITHCLIP ,"with &Clipboard" ,KITEM ,-1 ,-1},
{0 ,0 ,KEND ,KEND ,-1},
{0 ,0 ,KSEP ,KSEP ,-1},
{0 ,"&Filter" ,KMENU ,-1 ,KEXCLUSIVE},
{MOVINGAVERAGE ,"&Moving Average" ,KITEM ,-1 ,-1},
{FILTERCREATE ,"&Create" ,KITEM ,-1 ,-1},
{0 ,0 ,KSEP ,KSEP ,-1},
{0 ,"&Presets" ,KMENU ,-1 ,KEXCLUSIVE},
//reference to grouped menu items attached at runtime
{FILTERPRESET ,"FilterPresets" ,KREF ,-1 ,-1},
{0 ,0 ,KEND ,KEND ,-1},
{0 ,0 ,KEND ,KEND ,-1},
{0 ,0 ,KSEP ,KSEP ,-1},
{DELAY ,"&Delay" ,KITEM ,-1 ,-1},
{REVERSE ,"&Reverse" ,KITEM ,-1 ,-1},
{STUTTER ,"&Periodic Silence" ,KITEM ,-1 ,-1},
{0 ,0 ,KSEP ,KSEP ,-1},
{RATECHANGE ,"&Change rate" ,KITEM ,-1 ,-1},
{REQUANTISE ,"Re&Quantize" ,KITEM ,-1 ,-1},
{0 ,0 ,KEND ,KEND ,-1},
//third menu, only partially added to an alreay existent menu
{0 ,"&Edit" ,KMENU ,-1 ,KSHARED}, //allocate as shared
{0 ,0 ,KSEP ,KSEP ,-1},
{MIXPASTE ,"&Mix & Paste" ,KITEM ,-1 ,CTRL+SHIFT+Key_X},
{CROP ,"Tri&m" ,KITEM ,-1 ,CTRL+Key_T},
{DELETE ,"&Delete" ,KITEM ,-1 ,Key_Delete},
{0 ,0 ,KSEP ,KSEP ,-1},
{FLIP ,"&Flip Phase" ,KITEM ,-1 ,-1},
{CENTER ,"&Center Signal" ,KITEM ,-1 ,-1},
{RESAMPLE ,"&Resample" ,KITEM ,-1 ,SHIFT+Key_R},
{0 ,0 ,KEND ,KEND ,-1},
{0,0,0,0,0} //Terminates
};
extern int play16bit;
extern int bufbase;
extern ClipBoard *clipboard;
extern QDir *configDir;
static int len;
static int begin;
extern void *mmapalloc (int);
extern void mmapfree (void *);
extern long mmap_threshold; //thresholf for using memory mapped to files
static const char *NOMEM={"Not enough Memory for Operation !"};
QDir *filterDir=0;
QStrList *filterNameList=0;
//**********************************************************
#ifndef THREADS
//use a wrapper to use functions also on Systems with no thread support...
//seems to work...
void pthread_create (pthread_t *,void *,void* (*jumpto)(void *),void *arg)
{
*(jumpto) (arg);
}
#endif
//**********************************************************
int *MSignal::getNewMem (int size)
//these are internal methods replacing new and delete if file-mapped
//memory is desired
{
int *mem;
if (size>(mmap_threshold<<20))
{
mapped=true;
mem=(int *) mmapalloc(size*sizeof(int));
}
else mem=new int[size];
return mem;
}
//**********************************************************
void MSignal::getridof (int *mem)
{
if (mem)
if (mapped) mmapfree (mem);
else delete mem;
}
//**********************************************************
void MSignal::appendMenus ()
{
if (manage->addNumberedMenu ("FilterPresets")) //append items only if the Menu is created from scratch
{
filterDir=new QDir(configDir->path());
if (!filterDir->cd ("presets"))
{
filterDir->mkdir ("presets");
filterDir->cd ("presets");
}
if (!filterDir->cd ("filters"))
{
filterDir->mkdir ("filters");
filterDir->cd ("filters");
}
filterDir->setNameFilter ("*.filter");
filterNameList=(QStrList *)filterDir->entryList ();
for (char *tmp=filterNameList->first();tmp!=0;tmp=filterNameList->next())
{
char buf[strlen(tmp)-6];
strncpy (buf,tmp,strlen(tmp)-6);
buf[strlen(tmp)-7]=0;
manage->addNumberedMenuEntry ("FilterPresets",buf);
}
}
manage->appendMenus (sample_menus);
}
//**********************************************************
void MSignal::deleteMenus ()
{
manage->deleteMenus (sample_menus);
}
//**********************************************************
void MSignal::getIDs ()
{
}
//**********************************************************
void MSignal::doRangeOp (int id)
// this is the sample wrapper function
// all methods should called by giving an id to this function
// this will improve independency of gui system should there be need of
// doing a port to another system...
{
stopplay(); //every operation cancels playing...
if (lmarker<0) lmarker=0; //check markers for bounding
if (rmarker>length) lmarker=length;
//usually useless, or it introduces
//new bugs, or even better makes old bug worse to debug...
len=rmarker-lmarker;
begin=lmarker;
if (len==0) //if no part is selected select the whole signal
{
len=length;
begin=0;
}
//decode dynamical allocated menu id's
//into the ones used by the switch statement below
if (manage) id=manage->translateId (sample_menus,id);
printf (" id is %d\n",id);
switch (id)
{
case PLAY:
if (play16bit) play16(false);
else play8(false);
break;
case LOOP:
if (play16bit) play16(true);
else play8(true);
break;
}
//chaos is about to come
//check for ranges of id that have to be decoded into a parameter
if ((id>=TOGGLECHANNEL)&&(id<TOGGLECHANNEL+10)) toggleChannel (0,id-TOGGLECHANNEL);
if ((id>DELETECHANNEL)&&(id<DELETECHANNEL+256))
{
deleteChannel (0,id-DELETECHANNEL);
channels--;
emit sampleChanged();
emit channelReset();
}
if ((id>=FILTERPRESET)&&(id<FILTERPRESET+MENUMAX)) movingFilter (id-FILTERPRESET);
switch (id)
{
//add your wrapper here
case ALLCHANNEL:
selected=true;
break;
case INVERTCHANNEL:
selected=!selected;
break;
case COPY:
copyRange();
break;
case FFT:
fft();
break;
case ADDCHANNEL:
addChannel();
break;
case PULSE:
pulse();
break;
case SONAGRAM:
sonagram ();
break;
case AVERAGEFFT:
averagefft();
break;
case DELETE:
deleteRange();
break;
case PASTE:
pasteRange();
break;
case MIXPASTE:
mixpasteRange();
break;
case CROP:
cropRange();
break;
case CUT:
cutRange();
break;
case ZERO:
zeroRange();
break;
case FLIP:
flipRange();
break;
case STUTTER:
stutter();
break;
case REQUANTISE:
reQuantize();
break;
case FILTERCREATE:
filterCreate ();
break;
case RESAMPLE:
resample ();
break;
case MOVINGAVERAGE:
movingAverage();
break;
case ADDSYNTH:
addSynth();
break;
case HULLCURVE:
hullCurve ();
break;
case DELAY:
delay();
break;
case RATECHANGE:
rateChange();
break;
case CENTER:
center();
break;
case REVERSE:
reverseRange();
break;
case FADEIN:
fadeIn ();
break;
case FADEOUT:
fadeOut ();
break;
case AMPLIFYMAX:
amplifyMax ();
break;
case AMPLIFY:
amplify ();
break;
case DISTORT:
distort ();
break;
case AMPWITHCLIP:
amplifywithClip ();
break;
case NOISE:
noise ();
break;
}
}
//**********************************************************
QString *MSignal::getName ()
{
return name;
}
//**********************************************************
void MSignal::setParent (QWidget *par)
{
parent=par;
}
//**********************************************************
MSignal::MSignal (QWidget *par,MenuManager *manage,int numsamples,int rate,int channels) :QObject ()
{
this->manage=manage;
getIDs ();
appendMenus ();
this->channels=channels; //store how many channels are linked to this
this->rate=rate;
this->length=numsamples;
parent=par;
initSignal ();
}
//**********************************************************
MSignal::MSignal (QWidget *par,int numsamples,int rate,int channels) :QObject ()
// constructor for creating a "silence"-sample
// the other constructor which loads a file into memory is located in sampleio.cpp
{
this->channels=channels; //store how many channels are linked to this
this->rate=rate;
this->length=numsamples;
parent=par;
initSignal();
}
//**********************************************************
void MSignal::setMenuManager (MenuManager *manage)
{
this->manage=manage;
appendMenus ();
}
//**********************************************************
void MSignal::initSignal ()
{
mapped=false;
name=new QString ("Unnamed");
sample=getNewMem (length);
if (sample)
{
//erase, because not all memory is clearedy
for (int i=0;i<length;sample[i++]=0);
//get shared memory needed by playback, this will be changed, if
//threading is standard
int key = ftok(".", 'S');
int memid =-1;
while (memid==-1) memid=shmget(key++,sizeof(int)*4,IPC_CREAT|IPC_EXCL|0660); //seems to be the only way to ensure to get a block of memory at all...
msg= (int*) shmat (memid,0,0);
shmctl(memid, IPC_RMID, 0);
if (msg)
{
msg[processid]=0;
msg[stopprocess]=false;
msg[samplepointer]=0;
}
else KMsgBox::message (parent,"Info","Could not get shared memory\n",2);
//initialise attributes
locked=0;
selected=true;
lmarker=0;
rmarker=0;
next=0;
//if there are more channels to be created create them recursively
if (channels>1) next=new MSignal(parent,manage,length,rate,channels-1);
emit sampleChanged();
}
else KMsgBox::message (parent,"Info",NOMEM,2);
}
//**********************************************************
void MSignal::detachChannels ()
// detach all channels linked to this one
{
next=0;
}
//**********************************************************
MSignal::~MSignal ()
{
if (manage) deleteMenus();
if (sample!=0)
{
stopplay();
getridof (sample);
sample=0;
}
if (msg) shmdt ((char *)msg);
if (next!=0) delete next;
}
//**********************************************************
//functions that return attribute to external callers
int MSignal::getLockState () {return locked;}
int MSignal::getRate () {return rate;}
int MSignal::isSelected () {return selected;}
int MSignal::getChannels () {return channels;}
MSignal *MSignal::getNext () {return next;};
int* MSignal::getSample () {return sample;}
int MSignal::getLength () {return length;}
int MSignal::getLMarker () {return lmarker;}
int MSignal::getRMarker () {return rmarker;}
int MSignal::getPlayPosition() {return msg[samplepointer];}
//**********************************************************
void MSignal::setMarkers (int l,int r )
//this one sets the internal markers, most operations use
{
lmarker=l;
rmarker=r;
if (next) next->setMarkers (l,r); //recursive call for all channels
}
//**********************************************************
void MSignal::insertZero (int ins)
{
int *newsam=getNewMem (length+ins);
if (newsam)
{
memcpy (newsam,sample,lmarker*sizeof(int));
for (int i=0;i<ins;i++) newsam[lmarker+i]=0;
memcpy (&newsam[lmarker+ins],&sample[rmarker],(length-rmarker)*sizeof(int));
getridof (sample);
sample=newsam;
length+=ins;
rmarker=lmarker+ins;
}
else KMsgBox::message (parent,"Info",NOMEM,2);
}
//**********************************************************
// now follow the various editing and effects functions
void MSignal::zeroChannelRange ()
{
for (int i=lmarker;i<rmarker;sample[i++]=0);
}
//**********************************************************
void MSignal::zeroRange ()
{
int len=rmarker-lmarker;
if (len==0)
{
TimeDialog dialog (parent,rate,"Insert Silence :");
if (dialog.exec())
{
int ins=dialog.getLength();
MSignal *tmp=this;
while (tmp!=0)
{
tmp->insertZero (ins);
tmp=tmp->getNext();
}
}
}
else
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->zeroChannelRange ();
tmp=tmp->getNext();
}
}
emit sampleChanged();
}
//**********************************************************
void MSignal::flipRange ()
{
MSignal *tmp=this;
while (tmp!=0)
{
tmp->flipChannelRange ();
tmp=tmp->getNext();
}
emit sampleChanged();
}
//**********************************************************
void MSignal::flipChannelRange ()
{
if (rmarker!=lmarker)
{
if (lmarker<0) lmarker=0;
if (rmarker>length) rmarker=length;
for (int i=lmarker;i<rmarker;sample[i]=-sample[i++]);
}
}
//**********************************************************
void MSignal::center ()
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->centerChannel ();
tmp=tmp->getNext();
}
emit sampleChanged();
}
//**********************************************************
void MSignal::centerChannel ()
{
long long addup=0;
int dif;
for (int i=begin;i<begin+len;addup+=sample[i++]);
dif=addup/len; //generate mean value
if (div!=0)
for (int i=begin;i<begin+len;sample[i++]-=dif); //and subtract it from all samples ...
}
//**********************************************************
void MSignal::reverseRange ()
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->reverseChannelRange ();
tmp=tmp->getNext();
}
emit sampleChanged();
}
//**********************************************************
void MSignal::reverseChannelRange ()
{
if (rmarker!=lmarker)
{
int i,x;
if (lmarker<0) lmarker=0;
if (rmarker>length) rmarker=length;
for (i=0;i<(rmarker-lmarker)/2;i++)
{
x=sample[lmarker+i];
sample[lmarker+i]=sample[rmarker-i];
sample[rmarker-i]=x;
}
}
else
{
int i,x;
for (i=0;i<length/2;i++)
{
x=sample[i];
sample[i]=sample[length-i];
sample[length-i]=x;
}
}
}
//**********************************************************
void fadeOutThread (struct FXParams *params)
{
int *sample=params->source;
int len=params->len;
int *counter=params->counter;
int curve=(int)params->data[0];
int i=0;
if (curve==0)
for (;i<len;i++)
{
sample[i]=
(int)(((long long) (sample[i]))*(len-i)/len);
*counter=i;
}
else if (curve<0)
for (;i<len;i++)
{
sample[i]=
(int)((double)sample[i]*
log10(1+(-curve*((double)len-i)/len))/log10(1-curve));
*counter=i;
}
else
for (;i<len;i++)
{
sample[i]=
(int)((double)sample[i]*
(1-log10(1+(curve*((double)i)/len))/log10(1+curve)));
*counter=i;
}
*counter=-1; //signal progress that action is performed...
}
//**********************************************************
void MSignal::fadeChannelOut (int curve)
{
pthread_t thread;
ProgressDialog *dialog=new ProgressDialog (len,&msg[2],"Fading channel");
if (dialog)
{
dialog->show ();
connect (dialog,SIGNAL(done()),parent,SLOT(refresh()));
lockWrite ();
connect (dialog,SIGNAL(done()),this,SLOT(unlockWrite()));
pthread_create (&thread,0,(void *)fadeOutThread,
getFXParams((void *)curve));
}
}
//**********************************************************
void MSignal::fadeOut ()
{
if (rmarker!=lmarker)
{
FadeDialog dialog(parent,-1,(int)(((long)len)*1000/rate));
if (dialog.exec ())
{
int curve=dialog.getCurve();
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->fadeChannelOut (curve);
tmp=tmp->getNext();
}
emit sampleChanged();
}
}
}
//**********************************************************
void fadeInThread (struct FXParams *params)
{
int *sample=params->source;
int len=params->len;
int *counter=params->counter;
int curve=(int)params->data[0];
int i=0;
if (curve==0)
for (;i<len;i++)
{
sample[i]=
(int)(((long long) (sample[i]))*i/len);
*counter=i;
}
else if (curve<0)
for (;i<len;i++)
{
sample[i]=
(int)((double)sample[i]*
log10(1+(-curve*((double)i)/len))/log10(1-curve));
*counter=i;
}
else
{
for (;i<len;i++)
sample[i]=
(int)((double)sample[i]*
(1-log10(1+(curve*((double)len-i)/len))/log10(1+curve)));
*counter=i;
}
*counter=-1; //signal progress that action is performed...
}
//**********************************************************
void MSignal::fadeChannelIn (int curve)
{
pthread_t thread;
ProgressDialog *dialog=new ProgressDialog (len,&msg[2],"Fading channel");
if (dialog)
{
dialog->show ();
lockWrite ();
connect (dialog,SIGNAL(done()),this,SLOT(unlockWrite()));
connect (dialog,SIGNAL(done()),parent,SLOT(refresh()));
pthread_create (&thread,0,(void *)fadeInThread,
getFXParams((void *)curve));
}
}
//**********************************************************
void MSignal::fadeIn ()
{
if (rmarker!=lmarker)
{
FadeDialog dialog(parent,1,(int)(((long)len)*1000/rate));
if (dialog.exec ())
{
int curve=dialog.getCurve();
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->fadeChannelIn (curve);
tmp=tmp->getNext();
}
emit sampleChanged();
}
}
}
//**********************************************************
int MSignal::newChannel (int numsamples, int rate)
{
sample=getNewMem(numsamples);
if (sample)
{
for (int i=0;i<numsamples;sample[i++]=0);
this->rate=rate;
this->length=numsamples;
msg[processid]=0;
msg[stopprocess]=false;
msg[samplepointer]=0;
lmarker=0;
rmarker=0;
return true;
}
return false;
}
//**********************************************************
/*void MSignal::newSignal ()
{
NewSampleDialog *dialog=new NewSampleDialog (parent);
if (dialog->exec())
{
int rate=dialog->getRate();
int numsamples=dialog->getLength();
MSignal *tmp=this;
while (tmp!=0)
{
if (!tmp->newChannel(numsamples,rate)) KMsgBox::message (parent,"Info",NOMEM,2);
tmp=tmp->getNext();
}
emit sampleChanged();
}
}
*/
//**********************************************************
void MSignal::amplifyMax ()
{
int max=0;
MSignal *tmp=this;
while (tmp!=0)
{
int j;
if (tmp->isSelected())
{
j=tmp->getRangeMaximum();
if (j>max) max=j;
}
tmp=tmp->getNext();
}
tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->amplifyChannelMax(max);
tmp=tmp->getNext();
}
emit sampleChanged();
}
//**********************************************************
int MSignal::getChannelMaximum ()
{
int max=0;
for (int i=0;i<length;i++)
if (max<abs(sample[begin+i])) max=abs(sample[begin+i]);
return max;
}
//**********************************************************
int MSignal::getRangeMaximum ()
{
int max=0;
for (int i=0;i<len;i++)
if (max<abs(sample[begin+i])) max=abs(sample[begin+i]);
return max;
}
//**********************************************************
void MSignal::amplifyChannelMax (int max)
{
ProgressDialog *dialog=new ProgressDialog (len*2,"Amplifying to Maximum :");
if (dialog)
{
int j;
dialog->show();
double prop=((double)((1<<23)-1))/max;
for (int i=0;i<len;)
{
if (i<len-PROGRESS_SIZE) j=i+PROGRESS_SIZE;
else j=len;
for (;i<j;i++)
sample[begin+i]=(int) (sample[begin+i]*prop);
dialog->setProgress (i+len);
}
delete dialog;
}
}
//*********************************************************
void noiseThread (struct FXParams *params)
{
int *sample=params->source;
int len=params->len;
int *counter=params->counter;
for (int i=0;i<len;i++)
{
sample[i]=(int)((drand48()*(1<<24)-1)-(1<<23));
*counter=i;
}
*counter=-1;
}
//*********************************************************
void MSignal::noiseRange()
{
pthread_t thread;
ProgressDialog *dialog=new ProgressDialog (len,&msg[2],"Generating Noise");
if (dialog)
{
dialog->show ();
connect (dialog,SIGNAL(done()),parent,SLOT(refresh()));
pthread_create (&thread,0,(void *)noiseThread,
getFXParams());
}
}
//*********************************************************
void MSignal::noiseInsert(int ins)
{
int *newsam=getNewMem(length+ins);
if (newsam)
{
memcpy (newsam,sample,lmarker*sizeof(int));
for (int i=0;i<ins;i++)
newsam[lmarker+i]=(int)((drand48()*(1<<24)-1)-(1<<23));
memcpy (&newsam[lmarker+ins],&sample[rmarker],(length-rmarker)*sizeof(int));
getridof (sample);
sample=newsam;
length+=ins;
rmarker=lmarker+ins;
}
}
//*k********************************************************
void MSignal::noise()
{
int len=rmarker-lmarker;
if (len==0)
{
TimeDialog dialog (parent,rate,klocale->translate("Insert Noise :"));
if (dialog.exec())
{
int ins=dialog.getLength();
MSignal *tmp=this;
while (tmp!=0)
{
tmp->noiseInsert (ins);
tmp=tmp->getNext();
}
}
}
else
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->noiseRange();
tmp=tmp->getNext();
}
}
emit sampleChanged();
}
//*********************************************************
void MSignal::delayRecursive (int delay,int ampl,int start,int stop)
{
int len=stop-start;
ProgressDialog *dialog=new ProgressDialog (len,"Recursive delaying :");
if (dialog)
{
dialog->show();
int j;
if (start-delay<0) start=delay;
for (int i=start;i<stop;)
{
if (i<stop-PROGRESS_SIZE) j=i+PROGRESS_SIZE;
else j=stop;
for (;i<j;i++)
sample[i]=(sample[i]+(sample[i-delay]*ampl/100))*100/(ampl+100);
dialog->setProgress (i);
}
emit sampleChanged();
delete dialog;
}
}
//*********************************************************
void MSignal::delayOnce (int delay,int ampl,int start,int stop)
{
int len=stop-start;
ProgressDialog *dialog=new ProgressDialog (len,"Delaying :");
if (dialog)
{
dialog->show();
int j;
if (start-delay<0) start=delay;
for (int i=stop-1;i>=start;)
{
if (i>start+PROGRESS_SIZE) j=i-PROGRESS_SIZE;
else j=start;
for (;i>=j;i--)
sample[i]=(sample[i]+(sample[i-delay]*ampl/100))*200/(ampl+100);
dialog->setProgress (len-i);
}
delete dialog;
}
}
//*********************************************************
void MSignal::hullCurve ()
{
HullCurveDialog dialog (parent,"Create Hullcurve from Signal:");
if (dialog.exec())
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->hullCurveChannel (dialog.getTime(),dialog.getType());
tmp=tmp->getNext();
}
emit sampleChanged();
}
else KMsgBox::message (parent,"Info","sampling intervall is to big for this signal",2);
}
//*********************************************************
void MSignal::hullCurveChannel (int time,int type)
{
CPoint *nep;
int max=0;
int chunksize=rate*10/time;
Interpolation interpolation(type);
QList<CPoint> *points=new QList<CPoint>;
if (chunksize<len)
{
for (int i=0;i<chunksize/2;i++)
{
int act=sample[begin+i];
if (max<act) max=act;
if (max<-act) max=-act;
}
nep=new CPoint;
nep->x=0;
nep->y=(double) max;
points->append (nep);
int pos=begin;
while (pos<begin+len-chunksize)
{
max=0;
for (int i=0;i<chunksize;i++)
{
int act=sample[pos++];
if (max<act) max=act;
if (max<-act) max=-act;
}
nep=new CPoint;
nep->x=(double) (pos-chunksize/2-begin)/len;
nep->y=(double) max;
points->append (nep);
}
max=0;
for (int i=len-chunksize/2;i<len;i++)
{
int act=sample[begin+i];
if (max<act) max=act;
if (max<-act) max=-act;
}
nep=new CPoint;
nep->x=1;
nep->y=(double) max;
points->append (nep);
double *y=interpolation.getInterpolation (points,len);
for (int i=0;i<len;i++) sample[begin+i]=(int)y[i];
}
}
//*********************************************************
void MSignal::rateChange ()
{
RateDialog dialog (parent);
if (dialog.exec())
{
rate=dialog.getRate();
MSignal *tmp=this;
while (tmp!=0)
{
tmp->changeChannelRate (rate);
tmp=tmp->getNext();
}
emit sampleChanged();
}
}
//*********************************************************
void MSignal::changeChannelRate (int newrate)
{
rate=newrate;
}
//*********************************************************
void MSignal::resampleChannel (int newrate)
{
Interpolation interpolation(1); //get Spline Interpolation
struct CPoint *nep;
QList<CPoint> *points=new QList<CPoint>;
int oldmax=getChannelMaximum();
int newlen=(int)((double)length*(double)newrate/rate);
int *newsample=getNewMem (newlen);
if (newsample&&points)
{
for (int i=0;i<length;i++)
{
nep=new CPoint;
nep->x=(double) i/length;
nep->y=(double) sample[i];
points->append (nep);
}
double *y=interpolation.getInterpolation (points,newlen);
if (y)
{
delete points;
points=0;
getridof (sample);
sample=newsample;
for (int i=0;i<newlen;i++) newsample[i]=(int)y[i];
length=newlen;
begin=0;
len=length;
amplifyChannelMax (oldmax);
rate=newrate;
delete y;
}
else getridof (newsample);
}
else getridof (newsample);
if (points) delete points;
}
//*********************************************************
void MSignal::resample ()
{
RateDialog dialog (parent);
if (dialog.exec())
{
int rate=dialog.getRate();
MSignal *tmp=this;
while (tmp!=0)
{
tmp->resampleChannel (rate);
tmp=tmp->getNext();
}
emit sampleChanged();
}
}
//*********************************************************
void MSignal::amplifywithClip ()
{
if (clipboard)
{
MSignal *tmp=this;
MSignal *clip=clipboard->getSignal();
while (tmp!=0)
{
if (tmp->isSelected()) tmp->amplifyChannelwithClip (clip);
tmp=tmp->getNext();
clip=clip->getNext();
if (!clip) clip=clipboard->getSignal();
}
emit sampleChanged();
}
}
//*********************************************************
void MSignal::amplifyChannelwithClip (MSignal *clip)
{
int *clipsam =clip->getSample();
int cliplength =clip->getLength();
for (int i=0;i<len;i++)
sample[begin+i]=(int)
((double)sample[begin+i]*clipsam[i%cliplength]/(1<<23));
}
//*********************************************************
void MSignal::amplifyChannel (double *y)
{
for (int i=0;i<len;i++) sample[begin+i]=(int) (sample[begin+i]*y[i]);
}
//*********************************************************
void MSignal::amplify ()
{
AmplifyCurveDialog *dialog =new AmplifyCurveDialog (parent,(int)(((double)len)*1000/rate));
if (dialog->exec())
{
QList<CPoint> *points=dialog->getPoints ();
Interpolation interpolation (dialog->getType());
double *y=interpolation.getInterpolation (points,len);
if (y)
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->amplifyChannel (y);
tmp=tmp->getNext();
}
}
emit sampleChanged();
delete dialog;
}
}
//*********************************************************
void MSignal::distort ()
{
DistortDialog *dialog =new DistortDialog (parent);
if (dialog->exec())
{
QList<CPoint> *points=dialog->getPoints ();
Interpolation *interpolation=new Interpolation (dialog->getInterpolationType());
int type=dialog->getSymmetryType ();
if ((interpolation)&&(interpolation->prepareInterpolation (points)))
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->distortChannel (interpolation,type);
tmp=tmp->getNext();
}
// delete interpolation; have to find a way for doing this in future...
}
delete dialog;
}
}
//*********************************************************
void distortThread (struct FXParams *params)
{
int *sample=params->source;
int len=params->len;
int *counter=params->counter;
Interpolation *interpolation=(Interpolation *) params->data[0];
int type=(int) params->data[1];
int x;
double oldy,y;
interpolation->incUsage();
switch (type)
{
case 0:
for (int i=0;i<len;i++)
{
x=sample[i];
oldy=((double) abs(x))/((1<<23)-1);
y=interpolation->getSingleInterpolation(oldy);
if (x>0)
sample[i]=(int) (y*((1<<23)-1));
else
sample[i]=-(int) (y*((1<<23)-1));
*counter=i;
}
break;
case 1: //only upper half...
for (int i=0;i<len;i++)
{
x=sample[i];
if (x>0)
{
oldy=((double) abs(x))/((1<<23)-1);
y=interpolation->getSingleInterpolation(oldy);
sample[i]=(int) (y*((1<<23)-1));
}
*counter=i;
}
break;
case 2: //only lower half...
for (int i=0;i<len;i++)
{
x=sample[i];
if (x<=0)
{
oldy=((double) abs(x))/((1<<23)-1);
y=interpolation->getSingleInterpolation(oldy);
sample[i]=-(int) (y*((1<<23)-1));
}
*counter=i;
}
break;
}
*counter=-1;
interpolation->decUsage();
if (interpolation->getUsage()<=0) delete interpolation;
}
//*********************************************************
void MSignal::distortChannel (Interpolation *interpolation,int type)
{
pthread_t thread;
ProgressDialog *dialog=new ProgressDialog (len,&msg[2],"Distorting channel");
if (dialog)
{
dialog->show ();
lockWrite ();
connect (dialog,SIGNAL(done()),this,SLOT(unlockWrite()));
connect (dialog,SIGNAL(done()),parent,SLOT(refresh()));
pthread_create (&thread,0,(void *)distortThread,
getFXParams((void *)interpolation,(void *)type));
}
}
//*********************************************************
void MSignal::delay ()
{
DelayDialog dialog (parent,rate);
if (dialog.exec())
{
int delay=dialog.getDelay();
int ampl=dialog.getAmpl();
int len=rmarker-lmarker;
int begin=lmarker;
if (len==0)
{
len=length;
begin=0;
}
if (dialog.isRecursive())
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->delayRecursive (delay,ampl,begin,begin+len);
tmp=tmp->getNext();
}
}
else
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->delayOnce (delay,ampl,begin,begin+len);
tmp=tmp->getNext();
}
}
emit sampleChanged();
}
}
//*********************************************************
int getMaxPrimeFactor (int len)
{
int max=1;
int tst=len;
//here follows the cannonical slow prime factor search, but it does its job
//with small numbers, greater ones should not occur within this program...
if (((tst%2))==0)
{
max=2;
tst/=2;
while ((tst%2)==0) tst/=2; //remove prime factor 2
}
for (int i=3;i<=sqrt(tst);i+=2)
if ((tst%i)==0)
{
if (i>max) max=i;
while ((tst%i)==0) tst/=i; //divide the current prime factor until it is not present any more
}
if (tst>max) max=tst;
return max;
}
//*********************************************************
void MSignal::fft ()
{
int max=getMaxPrimeFactor (len);
int reduce=1;
int res=1;
if (max>MAXPRIME)
{
char buf[512];
while ((len-reduce>MAXPRIME)&&(getMaxPrimeFactor(len-reduce)>MAXPRIME)) reduce++;
sprintf (buf,"The selected number of samples, contains the large prime factor %d.\nThis may result in extremly long computing time\nIt is recommended to reduce the selected range by %d samples\nto gain lots of speed, but lose some accuracy !\nWhat do you want to go for ?",max,reduce);
res=KMsgBox::yesNoCancel(parent,"Attention",buf,KMsgBox::QUESTION,"Accuracy","Speed","Cancel");
if (res==2) len-=reduce;
}
if (res!=3)
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->fftChannel (0);
tmp=tmp->getNext();
}
}
if (res==2) len+=reduce;
}
//*********************************************************
void MSignal::fftChannel (int windowtype)
{
complex *data=0;
data=new complex[len];
if (data)
{
double rea,ima,max=0;
for (int i=0;i<len;i++)
{
data[i].real=((double)(sample[begin+i])/(1<<23));
data[i].imag=0;
}
gsl_fft_complex_wavetable table;
gsl_fft_complex_wavetable_alloc (len,&table);
gsl_fft_complex_init (len,&table);
gsl_fft_complex_forward (data,len,&table);
gsl_fft_complex_wavetable_free (&table);
for (int i=0;i<len;i++)
{
rea=data[i].real;
ima=data[i].imag;
rea=sqrt(rea*rea+ima*ima); //get amplitude
if (max<rea) max=rea;
}
FFTWindow *win=new FFTWindow(name);
if (win)
{
win->show();
win->setSignal (data,max,len,rate);
}
else
KMsgBox::message
(parent,"Info","Could not open Freqency-Window!",2);
}
else
{
if (data) delete data;
KMsgBox::message
(parent,"Info","No Memory for FFT-buffers available !",2);
}
}
//*********************************************************
void MSignal::addSynth ()
{
AddSynthDialog *dialog =new AddSynthDialog (parent,rate);
if (dialog->exec())
{
MSignal *add=dialog->getSignal ();
if (add)
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->pasteChannelRange (add);
else tmp->insertZero ((int)(len));
tmp=tmp->getNext();
}
emit sampleChanged();
delete dialog;
delete add;
}
}
}
//*********************************************************
void MSignal::pulse ()
{
PulseDialog *dialog =new PulseDialog (parent);
if (dialog->exec())
{
MSignal *add=dialog->getSignal ();
if (add)
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->pasteChannelRange (add);
else tmp->insertZero ((int)(len));
tmp=tmp->getNext();
}
emit sampleChanged();
delete dialog;
delete add;
}
}
}
//*********************************************************
void MSignal::movingAverage ()
{
AverageDialog *dialog =new AverageDialog (parent,"Moving Average:");
if (dialog->exec())
{
int average=dialog->getTaps();
int type=dialog->getType();
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->averageChannel (average,type);
tmp=tmp->getNext();
}
}
emit sampleChanged();
delete dialog;
}
//*********************************************************
void averageThread (struct FXParams *params)
{
int *sample=params->source;
int len=params->len;
int *counter=params->counter;
int a=(int)params->data[0];
int b=a/2;
long int newsam;
int i,j;
int *sam=new int[len];
if (sam)
{
for (i=b;i<len-b;i++)
{
newsam=0;
for (j=-b;j<b;j++) newsam+=sample[i+j];
newsam/=a;
sam[i]=newsam;
*counter=i;
}
memcpy (&sample[b],&sam[b],(len-a)*sizeof(int));
delete sam;
}
*counter=-1;
}
//*********************************************************
void MSignal::averageChannel (int a,int type)
{
pthread_t thread;
ProgressDialog *dialog=new ProgressDialog (len,&msg[2],"Quantizing channel");
if (dialog)
{
dialog->show ();
lockWrite ();
connect (dialog,SIGNAL(done()),this,SLOT(unlockWrite()));
connect (dialog,SIGNAL(done()),parent,SLOT(refresh()));
pthread_create (&thread,0,(void *)averageThread,
getFXParams((void *)a));
}
}
//*********************************************************
void MSignal::sonagram ()
{
SonagramDialog *dialog =new SonagramDialog (parent,len,rate,"Sonagram:");
if (dialog)
{
if (dialog->exec())
{
int points=dialog->getPoints();
int windowtype=dialog->getWindowType();
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->sonagramChannel (points,windowtype);
tmp=tmp->getNext();
}
emit sampleChanged();
}
delete dialog;
}
}
//*********************************************************
void MSignal::sonagramChannel (int points,int windowtype)
{
int length=((len/(points/2))*points/2)+points/2; //round up length
double *data=new double[length];
int i;
if (data)
{
for (i=0;i<len;i++)
data[i]=((double)(sample[begin+i])/(1<<23));
for (;i<length;i++) data[i]=0; //pad with zeros...
SonagramWindow *sonagramwindow=new SonagramWindow(name);
if (sonagramwindow)
{
sonagramwindow->show();
sonagramwindow->setSignal (data,length,points,windowtype,rate);
}
delete data;
}
}
//*********************************************************
void MSignal::averagefft ()
{
AverageFFTDialog *dialog =new AverageFFTDialog (parent,len,rate);
if (dialog)
{
if (dialog->exec())
{
int points=dialog->getPoints();
int windowtype=dialog->getWindowType();
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->averagefftChannel (points,windowtype);
tmp=tmp->getNext();
}
delete dialog;
}
}
}
//*********************************************************
void MSignal::averagefftChannel (int points,int windowtype)
{
complex *data=new complex[points];
complex *avgdata=new complex[points];
WindowFunction func(windowtype);
double *windowfunction=func.getFunction (points);
int count=0;
if (data&&avgdata&&windowfunction)
{
gsl_fft_complex_wavetable table;
gsl_fft_complex_wavetable_alloc (points,&table);
gsl_fft_complex_init (points,&table);
for (int i=0;i<points;i++)
{
avgdata[i].real=0;
avgdata[i].imag=0;
}
double rea,ima,max=0;
int page=0;
while (page<len)
{
if (page+points<len)
for (int i=0;i<points;i++)
{
data[i].real=(windowfunction[i]*(double)(sample[begin+i])/(1<<23));
data[i].imag=0;
}
else
{
int i=0;
for (;i<len-page;i++)
{
data[i].real=(windowfunction[i]*(double)(sample[begin+i])/(1<<23));
data[i].imag=0;
}
for (;i<points;i++)
{
data[i].real=0;
data[i].imag=0;
}
}
page+=points;
count++;
gsl_fft_complex_forward (data,points,&table);
for (int i=0;i<points;i++)
{
rea=data[i].real;
ima=data[i].imag;
avgdata[i].real+=sqrt(rea*rea+ima*ima);
}
}
if (data) delete data;
gsl_fft_complex_wavetable_free (&table);
for (int i=0;i<points;i++) //find maximum
{
avgdata[i].real/=count;
rea=avgdata[i].real;
if (max<rea) max=rea;
}
FFTWindow *win=new FFTWindow(name);
if (win)
{
win ->show();
win->setSignal (avgdata,max,points,rate);
}
else
KMsgBox::message
(parent,"Info","Could not open Freqency-Window!",2);
}
else
{
if (data) delete data;
KMsgBox::message
(parent,"Info","No Memory for FFT-buffers available !",2);
}
}
//*********************************************************
void MSignal::filterCreate ()
{
FilterDialog dialog (parent,rate);
if (dialog.exec ())
{
Filter *filter=dialog.getFilter ();
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->filterChannel (filter);
tmp=tmp->getNext();
}
emit sampleChanged();
}
}
//*********************************************************
void MSignal::filterChannel (Filter *filter)
{
double val;
double addup=0;
int max=0;
for (int j=0;j<filter->num;j++)
{
addup+=fabs(filter->mult[j]);
if (max<filter->offset[j]) max=filter->offset[j]; //find maximum offset
}
if (filter->fir)
{
for (int i=begin+len-1;i>=begin+max;i--)
{
val=filter->mult[0]*sample[i];
for (int j=1;j<filter->num;j++)
val+=filter->mult[j]*sample[i-filter->offset[j]];
sample[i]=(int)(val/addup); //renormalize
}
for (int i=begin+max-1;i>=begin;i--) //slower routine because of check, needed only in this range...
{
val=filter->mult[0]*sample[i];
for (int j=1;j<filter->num;j++)
if (i-filter->offset[j]>0) val+=filter->mult[j]*sample[i-filter->offset[j]];
sample[i]=(int)(val/addup); //renormalize
}
}
else //basically the same,but the loops go viceversa
{
for (int i=begin;i<begin+max;i++) //slower routine because of check, needed only in this range...
{
val=filter->mult[0]*sample[i];
for (int j=1;j<filter->num;j++)
if (i-filter->offset[j]>0) val+=filter->mult[j]*sample[i-filter->offset[j]];
sample[i]=(int)(val/addup); //renormalize
}
for (int i=begin+max;i<begin+len;i++)
{
val=filter->mult[0]*sample[i];
for (int j=1;j<filter->num;j++)
val+=filter->mult[j]*sample[i-filter->offset[j]];
sample[i]=(int)(val/addup); //renormalize
}
}
}
//*********************************************************
void MSignal::movingFilterChannel (Filter *filter,int tap,double *move)
{
double val;
double addup=0;
int max=0;
for (int j=0;j<filter->num;j++)
{
addup+=fabs(filter->mult[j]);
if (max<filter->offset[j]) max=filter->offset[j]; //find maximum offset
}
if (filter->fir)
{
for (int i=begin+len-1;i>=begin+max;i--)
{
filter->mult[tap]=(move[i-begin]);
val=filter->mult[0]*sample[i];
for (int j=1;j<filter->num;j++)
val+=filter->mult[j]*sample[i-filter->offset[j]];
sample[i]=(int)(val/addup); //renormalize
}
for (int i=begin+max-1;i>=begin;i--) //slower routine because of check, needed only in this range...
{
filter->mult[tap]=(move[i-begin]);
val=filter->mult[0]*sample[i];
for (int j=1;j<filter->num;j++)
if (i-filter->offset[j]>0) val+=filter->mult[j]*sample[i-filter->offset[j]];
sample[i]=(int)(val/addup); //renormalize
}
}
else //basically the same,but the loops go viceversa
{
for (int i=begin;i<begin+max;i++) //slower routine because of check, needed only in this range...
{
filter->mult[tap]=(move[i-begin]);
val=filter->mult[0]*sample[i];
for (int j=1;j<filter->num;j++)
if (i-filter->offset[j]>0) val+=filter->mult[j]*sample[i-filter->offset[j]];
sample[i]=(int)(val/addup); //renormalize
}
for (int i=begin+max;i<begin+len;i++)
{
filter->mult[tap]=(move[i-begin]);
val=filter->mult[0]*sample[i];
for (int j=1;j<filter->num;j++)
val+=filter->mult[j]*sample[i-filter->offset[j]];
sample[i]=(int)(val/addup); //renormalize
}
}
}
//*********************************************************
void MSignal::movingFilter (int number)
{
QString name=filterNameList->at(number);
MovingFilterDialog *dialog =new MovingFilterDialog (parent,1);
Filter *filter=new Filter();
if (dialog&&filter&&filterDir)
{
QString fullname=filterDir->filePath(name);
filter->load (&fullname);
if (dialog->exec())
{
if (dialog->getState()) //moving filter
{
QList<CPoint> *points=dialog->getPoints ();
Interpolation interpolation (dialog->getType());
int low=dialog->getLow ();
int high=dialog->getHigh ();
int tap=dialog->getTap();
double *y=interpolation.getInterpolation (points,len);
if (y)
{
for (int i=0;i<len;i++) y[i]=((double)low)/1000+(((double)(high-low))/1000*y[i]); //rescale range of filtermovement...
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->movingFilterChannel (filter,tap,y);
tmp=tmp->getNext();
}
emit sampleChanged();
delete y;
}
}
else //use normal filtering
{
MSignal *tmp=this;
while (tmp!=0)
{
if (tmp->isSelected()) tmp->filterChannel (filter);
tmp=tmp->getNext();
}
emit sampleChanged();
}
}
delete dialog;
delete filter;
}
}
//*********************************************************
void MSignal::stutter ()
{
StutterDialog *dialog =new StutterDialog (parent,rate);
if (dialog->exec())
{
MSignal *tmp=this;
int len1=dialog->getLen1();
int len2=dialog->getLen2();
while (tmp!=0)
{
if (tmp->isSelected()) tmp->replaceStutterChannel (len1,len2);
tmp=tmp->getNext();
}
emit sampleChanged();
delete dialog;
}
}
//*********************************************************
void replaceStutterThread (struct FXParams *params)
{
int *sample=params->source;
int len=params->len;
int *counter=params->counter;
int len1=(int)params->data[0];
int len2=(int)params->data[1];
int j;
int i=len2;
while (i<len-len1)
{
for (j=0;j<len1;j++) sample[i+j]=0;
i+=len1+len2;
*counter=i;
}
*counter=-1;
}
//*********************************************************
void MSignal::replaceStutterChannel (int len1,int len2)
{
ProgressDialog *dialog=new ProgressDialog (len,&msg[2],"Replacing signal with silence in channel");
if (dialog)
{
pthread_t thread;
dialog->show ();
lockWrite ();
connect (dialog,SIGNAL(done()),this,SLOT(unlockWrite()));
connect (dialog,SIGNAL(done()),parent,SLOT(refresh()));
pthread_create (&thread,0,(void *)replaceStutterThread,
getFXParams((void *)len1,(void *)len2));
}
}
//*********************************************************
void MSignal::reQuantize ()
{
QuantiseDialog *dialog =new QuantiseDialog (parent);
if (dialog->exec())
{
MSignal *tmp=this;
int bit=dialog->getBits();
while (tmp!=0)
{
if (tmp->isSelected()) tmp->quantizeChannel (bit);
tmp=tmp->getNext();
}
emit sampleChanged();
delete dialog;
}
}
//*********************************************************
void quantizeThread (struct FXParams *params)
{
int *sample=params->source;
int len=params->len;
int *counter=params->counter;
int bits=(int)params->data[0];
double a;
for (int j=0;j<len;j++)
{
a=(double)(sample[j]+(1<<23))/(1<<24);
a=floor(a*bits+.5);
a/=bits;
sample[j]=(int)((a-.5)*((1<<24)-1)); //24 because of double range (no more signed)
*counter=j;
}
*counter=-1; //signal progress that action is performed...
delete params;
}
//*********************************************************
FXParams *MSignal::getFXParams (void *a,void *b,void *c,void *d,void *e,void *f)
{
FXParams *fx=new FXParams;
fx->source=&sample[begin];
fx->len=len;
fx->counter=&msg[2];
fx->data[0]=a;
fx->data[1]=b;
fx->data[2]=c;
fx->data[3]=d;
fx->data[4]=e;
fx->data[5]=f;
return fx;
}
//*********************************************************
void MSignal::lockRead ()
{
locked++;
}
//*********************************************************
void MSignal::unlockRead ()
{
locked--;
}
//*********************************************************
void MSignal::lockWrite ()
{
locked=-1;
}
//*********************************************************
void MSignal::unlockWrite ()
{
locked=0;
}
//*********************************************************
void MSignal::quantizeChannel (int bits)
{
bits--; //really complex calculation is needed, to bend this variable into usable form
pthread_t thread;
ProgressDialog *dialog=new ProgressDialog (len,&msg[2],"Quantizing channel");
if (dialog)
{
dialog->show ();
lockWrite ();
connect (dialog,SIGNAL(done()),this,SLOT(unlockWrite()));
connect (dialog,SIGNAL(done()),parent,SLOT(refresh()));
pthread_create (&thread,0,(void *)quantizeThread,
getFXParams((void *)bits));
}
}
//**********************************************************************