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ob_fft.cpp
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/* -----------------------------------------------------------------------------
BrainBay Version 1.7, GPL 2003-2010, contact: [email protected]
MODULE: OB_FFT.CPP: contains functions for the Fourier-Transform-Object
The FFT-Object has its own window, using openGl-Drawing to display spectral
information of a data-stream.
A rectangular or Hanning - windowing function can be used.
To do: 3-d view. selectable bins/sampling - rate, ..
IsPowerOfTwo, NumberOfBitsNeeded,
ReverseBits, Index_to_Freqeuncy: fft-float - assisting functions
fft_float: does the fast fourier transform of a given time-buffer
Create_FFT_GL: initializes an openGl- Drawing context, creates a drawable font
create_FFT_window: creates the FFT-drawing window for displaying the spectral data
BK_Color: set the background color
Draw_FFT_GL: draws the current magnitude/freqeuncy - display
FFTDlgHandler: processes the events for the FFT-toolbox window
FFTWndHandler: processes the events for the FFT-drawing window
fft-routine
original source code by Don Cross <[email protected]>
http://www.intersrv.com/~dcross/fft.html
definitions for doing Fourier transforms and inverse Fourier transforms.
Windows oriented changes by Murphy McCauley
The number of samples must be a power of two to do the
recursive decomposition of the FFT algorithm.
See Chapter 12 of "Numerical Recipes in FORTRAN" by
Press, Teukolsky, Vetterling, and Flannery,
Cambridge University Press.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; See the
GNU General Public License for more details.
-----------------------------------------------------------------------------*/
#include "brainBay.h"
#include "ob_fft.h"
//#include <gl\glaux.h> // Header File For The Glaux Library
extern GLuint base; // Base Display List For The Font Set
GLvoid glPrint(const char *, ...);
GLfloat xrot; // X Rotation ( NEW )
GLfloat yrot; // Y Rotation ( NEW )
GLfloat zrot; // Z Rotation ( NEW )
int IsPowerOfTwo ( unsigned x )
{
if ( x < 2 ) return FALSE;
if ( x & (x-1) ) // Thanks to 'byang' for this cute trick!
return FALSE;
return TRUE;
}
unsigned NumberOfBitsNeeded ( unsigned PowerOfTwo )
{
unsigned i;
for ( i=0; ; i++ )
if ( PowerOfTwo & (1 << i) ) return i;
}
unsigned ReverseBits ( unsigned index, unsigned NumBits )
{
unsigned i, rev;
for ( i=rev=0; i < NumBits; i++ )
{
rev = (rev << 1) | (index & 1);
index >>= 1;
}
return rev;
}
double WINAPI Index_to_frequency ( unsigned NumSamples, unsigned Index )
{
if ( Index >= NumSamples )
return 0.0;
else if ( Index <= NumSamples/2 )
return (double)Index / (double)NumSamples;
return -(double)(NumSamples-Index) / (double)NumSamples;
}
void WINAPI fft_float (int chnBufPos, float * buffer, int window, float * fftbands, int bins)
{
unsigned NumBits; // Number of bits needed to store indices
unsigned i, j, k, n, x;
unsigned BlockSize, BlockEnd;
double angle_numerator = 2.0 * DDC_PI;
double tr, ti; // temp real, temp imaginary
double RealOut[FFT_BUFFERLEN],
ImagOut[FFT_BUFFERLEN];
unsigned int NUM_FFT_SAMPLES=bins*2;
NumBits = NumberOfBitsNeeded ( NUM_FFT_SAMPLES );
// data copy and bit-reversal ordering
x=chnBufPos;
for ( i=0; i < NUM_FFT_SAMPLES; i++ )
{
j = ReverseBits ( i, NumBits );
ImagOut[j] = 0.0;
RealOut[j] = buffer[x];// - 512.0;
if (window==1) RealOut[j] *= (0.5 + 0.5*cos(2*DDC_PI*(i-NUM_FFT_SAMPLES/2)/NUM_FFT_SAMPLES));
if (x==0) x=FFT_BUFFERLEN;
x--;
}
// the FFT itself
BlockEnd = 1;
for ( BlockSize = 2; BlockSize <= NUM_FFT_SAMPLES; BlockSize <<= 1 )
{
double delta_angle = angle_numerator / (double)BlockSize;
double sm2 = sin ( -2 * delta_angle );
double sm1 = sin ( -delta_angle );
double cm2 = cos ( -2 * delta_angle );
double cm1 = cos ( -delta_angle );
double w = 2 * cm1;
double ar[3], ai[3];
for ( i=0; i < NUM_FFT_SAMPLES; i += BlockSize )
{
ar[2] = cm2;
ar[1] = cm1;
ai[2] = sm2;
ai[1] = sm1;
for ( j=i, n=0; n < BlockEnd; j++, n++ )
{
ar[0] = w*ar[1] - ar[2];
ar[2] = ar[1];
ar[1] = ar[0];
ai[0] = w*ai[1] - ai[2];
ai[2] = ai[1];
ai[1] = ai[0];
k = j + BlockEnd;
tr = ar[0]*RealOut[k] - ai[0]*ImagOut[k];
ti = ar[0]*ImagOut[k] + ai[0]*RealOut[k];
RealOut[k] = RealOut[j] - tr;
ImagOut[k] = ImagOut[j] - ti;
RealOut[j] += tr;
ImagOut[j] += ti;
}
}
BlockEnd = BlockSize;
}
for (i=0;i<(unsigned int)bins;i++)
{
fftbands[i] = (float) sqrt(ImagOut[i]*ImagOut[i]+RealOut[i]*RealOut[i])/bins;
}
}
void Draw_FFT_GL(FFTOBJ * st) // Called each time the FFT-window has to be drawn
{
double t,step,colstep,ec,every;
GLfloat x1,y1,t_x,dx;
GLfloat drawstep,textxpos;
int NUM_FFT_SAMPLES=fft_bin_values[st->binselect]*2;
textxpos=-0.14f;
glLoadIdentity(); // Load identity matrix
t_x=0.0;
switch (st->align)
{
case 0:
if (st->captions)
{ glTranslatef(-0.9f, 0.0f, -4.0f);
t_x=0.1f;
}
else glTranslatef(-1.0f, 0.0f, -4.0f);
break;
case 1:
if (st->captions) glTranslated(0, -0.9, -4);
else glTranslated(0, -1, -4);
glRotatef( 90, 0, 0, -1);
glRotatef(180, 0, 1, 0);
break;
case 2:
if (st->captions) { glTranslatef(0.8f, 0.0f, -4.0f); textxpos=-0.06f; }
else glTranslatef(1.0f, 0.0f, -4.0f);
glRotatef(180.0f, 1.0f, 0.0f, 0.0f);
glRotatef(180.0f, 0.0f, 0.0f, 1.0f);
break;
}
dx=0.016f * (float)st->gain_x/50.0f;
if (st->captions) dx-=0.002f;
if (st->kind==1) dx-=0.002f;
if (st->kind==0)
{ // Bar - Chart
glClearColor(
(GLclampf)((st->bkcol&0xff))/256.0f,
(GLclampf)((st->bkcol>>8)&0xff)/256.0f,
(GLclampf)((st->bkcol>>16)&0xff)/256.0f,
1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear buffers
glDisable (GL_DEPTH_TEST); // Enable Depth Testing
step=(double)PACKETSPERSECOND/(double)NUM_FFT_SAMPLES;
colstep=128.0/PACKETSPERSECOND*2;
drawstep=((1.0f+(float)st->gain_y/50.0f)/(st->endband-st->startband));
every=(st->endband-st->startband)/40.0f;
ec=every;
for (t=st->startband; t<=st->endband; t+=step)
{
y1=(GLfloat)(1.0f-(t-(GLfloat)st->startband)*drawstep);
x1=(GLfloat)(st->fftbands[(int)(NUM_FFT_SAMPLES * t/PACKETSPERSECOND)]/20)+t_x;
glColor3f(
(float)(((st->cols[(int)(colstep*t)])&0xff)/256.0),
(float)(((st->cols[(int)(colstep*t)]>>8)&0xff)/256.0),
(float)((st-> cols[(int)(colstep*t)]>>16)/256.0));
glBegin(GL_QUADS);
glVertex3f(t_x,-y1, 0.0f);
glVertex3f( x1 ,-y1, 0.0f);
glVertex3f( x1 ,(float)(-y1+drawstep*step), 0.0f);
glVertex3f(t_x,(float)(-y1+drawstep*step), 0.0f);
glEnd();
ec+=step;
if ((ec>=every) && (st->captions))
{
ec=0;
glRasterPos2f(textxpos, 0.0f-y1);
glPrint("%2.1f", t); // Print GL Text To The Screen
}
}
}
else if (st->kind==1)
{ // Spectrogram
float actcol;
glClearColor(
(GLclampf)((st->bkcol&0xff))/256.0f,
(GLclampf)((st->bkcol>>8)&0xff)/256.0f,
(GLclampf)((st->bkcol>>16)&0xff)/256.0f,
1.0f);
glDisable (GL_DEPTH_TEST); // Enable Depth Testing
step=(double)PACKETSPERSECOND/(double)NUM_FFT_SAMPLES;
colstep=128.0/(st->endband-st->startband);
drawstep=((1.0f+(float)st->gain_y/50.0f)/(st->endband-st->startband));
every=(st->endband-st->startband)/40.0f;
ec=every;
st->h_pos++; if (st->h_pos>150)
{ st->h_pos=0;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear buffers
}
x1=(GLfloat) (t_x+st->h_pos*dx);
for (t=st->startband; t<=st->endband; t+=step)
{
y1=(GLfloat)(1.0f-(t-(GLfloat)st->startband)*drawstep);
actcol=(st->fftbands[(int)(NUM_FFT_SAMPLES * t/PACKETSPERSECOND)]);
if(actcol>127) actcol=127;
glColor3f(
(float)(((st->cols[(int)actcol])&0xff)/256.0),
(float)(((st->cols[(int)actcol]>>8)&0xff)/256.0),
(float)((st-> cols[(int)actcol]>>16)/256.0));
glRectf( x1,-y1, x1+dx ,(float)(-y1+drawstep*step));
ec+=step;
if ((ec>=every) && (st->captions))
{ ec=0;
glRasterPos2f(textxpos, 0.0f-y1);
glPrint("%2.1f", t); // Print GL Text To The Screen
}
}
}
else if (st->kind==2)
{ // moving Spectogram
float actcol;
COLORREF ac;
int s,x2,x3;
glClearColor(
(GLclampf)((st->bkcol&0xff))/256.0f,
(GLclampf)((st->bkcol>>8)&0xff)/256.0f,
(GLclampf)((st->bkcol>>16)&0xff)/256.0f,
1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen And The Depth Buffer
glDisable (GL_DEPTH_TEST); // Enable Depth Testing
step=(double)PACKETSPERSECOND/(double)NUM_FFT_SAMPLES;
colstep=128.0/(st->endband-st->startband);
drawstep=((1.0f+(float)st->gain_y/50.0f)/(st->endband-st->startband));
every=(st->endband-st->startband)/40.0f;
ec=every;
for (x2=0,x1=t_x; x2<128; x1+=dx,x2++)
for (t=st->startband; t<st->endband; t+=step)
{
y1=(GLfloat)(1.0f-(t-(GLfloat)st->startband)*drawstep);
s=(int)((t-st->startband)/(st->endband-st->startband)*128.0f);
if (x2==0)
{
// memcpy(st->tex_buf[s],st->tex_buf[s]+1,127);
for (x3=127;x3>0;x3--)
st->tex_buf[s][x3]=st->tex_buf[s][x3-1];
actcol=(st->fftbands[(int)(NUM_FFT_SAMPLES * t/PACKETSPERSECOND)]);
st->tex_buf[s][0]=actcol;
}
else actcol= st->tex_buf[s][x2];
if(actcol>127.0f) actcol=127.0f;
if(actcol<0.0f) actcol=0.0f;
ac=st->cols[(int)(actcol)];
glColor3f(
(float)(ac&0xff) /256.0f,
(float)((ac>>8)&0xff)/256.0f,
(float)(ac>>16) /256.0f );
glRectf( x1,-y1, x1+dx ,(float)(-y1+drawstep*step));
if ((x2==0)&&(st->captions))
{
ec+=step;
if (ec>=every)
{
ec=0;
glRasterPos2f(textxpos, 0.0f-y1);
glPrint("%2.1f", t); // Print GL Text To The Screen
}
}
}
}
else if (st->kind>=3)
{ // 3d- Spectogram
float actcol,ocol;
COLORREF ac;
int s,x2,x3;
GLfloat zp,zp2,zp3,zp4,y1,dy;
glClearColor(
(GLclampf)((st->bkcol&0xff))/256.0f,
(GLclampf)((st->bkcol>>8)&0xff)/256.0f,
(GLclampf)((st->bkcol>>16)&0xff)/256.0f,
1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen And The Depth Buffer
glEnable (GL_DEPTH_TEST); // Enable Depth Testing
glRotatef((float)st->xrot, 1.0f, 0.0f, 0.0f);
glRotatef((float)st->yrot, 0.0f, 0.0f, 1.0f);
glTranslatef(st->ytrans/10.0f, st->xtrans/50.0f, 0.0f);
step=(double)PACKETSPERSECOND/(double)NUM_FFT_SAMPLES;
colstep=128.0/(st->endband-st->startband);
drawstep=((1.0f+(float)st->gain_y/50.0f)/(st->endband-st->startband));
dy=(float)(drawstep*step);
every=(st->endband-st->startband)/40.0f;
ec=every;
for (t=st->startband; t<st->endband; t+=step)
{
s=(int)((t-st->startband)/(st->endband-st->startband)*128.0f);
// memmove(st->tex_buf[s],st->tex_buf[s]+1,127);
for (x3=127;x3>0;x3--)
st->tex_buf[s][x3]=st->tex_buf[s][x3-1];
st->tex_buf[s][0]=(st->fftbands[(int)(NUM_FFT_SAMPLES * t/PACKETSPERSECOND)]);
}
for (x2=0,x1=t_x; x2<127; x1+=dx,x2++)
{
ocol=-1;
for (t=st->startband; t<st->endband; t+=step)
{
s=(int)((t-st->startband)/(st->endband-st->startband)*128.0f);
actcol= st->tex_buf[s][x2];
if (ocol!=-1) actcol=(actcol+ocol)/2;
if(actcol>127.0f) actcol=127.0f;
if(actcol<0.0f) actcol=0.0f;
ac=st->cols[(int)(actcol)];
glColor3f(
(float)(ac&0xff) /256.0f,
(float)((ac>>8)&0xff)/256.0f,
(float)(ac>>16) /256.0f );
zp= st->tex_buf[s][x2] / (float)st->gain_z;
zp2= st->tex_buf[s][x2+1]/ (float)st->gain_z;
if (s==0) { zp4=zp; zp3=zp2; }
y1=(float)((t-st->startband)*drawstep-1.0f);
switch (st->kind)
{
case 3:
glBegin(GL_QUADS);
glVertex3d( x1 ,y1, zp);
glVertex3d( x1+dx,y1, zp2);
glVertex3d( x1+dx,y1-dy, zp3);
glVertex3d( x1 ,y1-dy, zp4);
glEnd();
break;
case 4:
glBegin (GL_TRIANGLES);
glVertex3f( x1, y1, zp);
glVertex3f( x1+dx ,y1, zp2);
glVertex3f( x1 ,y1-dy, zp4);
glVertex3f( x1+dx ,y1, zp2);
glVertex3f( x1 ,y1-dy, zp4);
glVertex3f( x1+dx ,y1-dy, zp3);
glEnd();
break;
case 5:
glBegin(GL_LINES);
glVertex3d( x1 ,y1, zp);
glVertex3d( x1+dx,y1, zp2);
glVertex3d( x1+dx,y1, zp2);
glVertex3d( x1+dx,y1-dy, zp3);
glVertex3d( x1+dx,y1-dy, zp3);
glVertex3d( x1 ,y1-dy, zp4);
glEnd();
break;
}
zp3=zp2;
zp4=zp;
ocol=actcol;
if ((x2==0)&&(st->captions))
{
ec+=step;
if (ec>=every)
{
ec=0;
glRasterPos2f(textxpos, y1);
glPrint("%2.1f", t); // Print GL Text To The Screen
}
}
}
}
}
glFlush();
}
LRESULT CALLBACK FFTDlgHandler(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
char szFileName[MAX_PATH],szdata[10];
int t,i;
FFTOBJ * st;
st = (FFTOBJ *) actobject;
if ((st==NULL)||(st->type!=OB_FFT)) return(FALSE);
switch( message )
{
case WM_INITDIALOG:
SetDlgItemInt(hDlg, IDC_STARTBAND, st->startband,0);
SetDlgItemInt(hDlg, IDC_ENDBAND, st->endband,0);
SetDlgItemInt(hDlg, IDC_FFTDRAWINTERVAL, st->fft_drawinterval,0);
SetDlgItemInt(hDlg, IDC_FFTSCALE, st->scale,0);
SetDlgItemText(hDlg, IDC_PALETTEFILE, st->palettefile);
SetDlgItemText(hDlg, IDC_CAPTION, st->wndcaption);
SendDlgItemMessage(hDlg, IDC_FFTALIGNCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "Left" ) ;
SendDlgItemMessage(hDlg, IDC_FFTALIGNCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "Bottom" ) ;
SendDlgItemMessage(hDlg, IDC_FFTALIGNCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "Right" ) ;
SendDlgItemMessage(hDlg, IDC_FFTALIGNCOMBO, CB_SETCURSEL, st->align, 0L ) ;
SendDlgItemMessage(hDlg, IDC_FFTKINDCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "Bar-Graph" ) ;
SendDlgItemMessage(hDlg, IDC_FFTKINDCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "Spectogram" ) ;
SendDlgItemMessage(hDlg, IDC_FFTKINDCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "moving Spectogram" ) ;
SendDlgItemMessage(hDlg, IDC_FFTKINDCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "3d-Quads" ) ;
SendDlgItemMessage(hDlg, IDC_FFTKINDCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "3d-Triangles" ) ;
SendDlgItemMessage(hDlg, IDC_FFTKINDCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "3d-Line-Grid" ) ;
SendDlgItemMessage(hDlg, IDC_FFTKINDCOMBO, CB_SETCURSEL, st->kind, 0L ) ;
t=0;
while (fft_bin_values[t])
{
sprintf(szdata,"%d",fft_bin_values[t++]);
SendDlgItemMessage(hDlg, IDC_BINCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) szdata ) ;
}
SendDlgItemMessage(hDlg, IDC_BINCOMBO, CB_SETCURSEL, st->binselect, 0L ) ;
SendDlgItemMessage(hDlg, IDC_WINDOWCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "Rectangle" ) ;
SendDlgItemMessage(hDlg, IDC_WINDOWCOMBO, CB_ADDSTRING, 0,(LPARAM) (LPSTR) "Hanning" ) ;
SendDlgItemMessage(hDlg, IDC_WINDOWCOMBO, CB_SETCURSEL, st->window, 0L ) ;
CheckDlgButton(hDlg, IDC_FFTCAPTIONS, st->captions);
SCROLLINFO lpsi;
lpsi.cbSize=sizeof(SCROLLINFO);
lpsi.fMask=SIF_RANGE; // |SIF_POS;
lpsi.nMin=1; lpsi.nMax=500;
SetScrollInfo(GetDlgItem(hDlg,IDC_FFTDRAWINTERVALBAR),SB_CTL,&lpsi,TRUE);
SetScrollPos(GetDlgItem(hDlg,IDC_FFTDRAWINTERVALBAR), SB_CTL,st->fft_drawinterval,TRUE);
lpsi.nMin=1; lpsi.nMax=15000;
SetScrollInfo(GetDlgItem(hDlg,IDC_FFTSCALEBAR),SB_CTL,&lpsi,TRUE);
SetScrollPos(GetDlgItem(hDlg,IDC_FFTSCALEBAR), SB_CTL,st->scale,TRUE);
lpsi.nMin=0; lpsi.nMax=1000;
SetScrollInfo(GetDlgItem(hDlg,IDC_GAINXBAR),SB_CTL,&lpsi,TRUE);
SetScrollPos(GetDlgItem(hDlg,IDC_GAINXBAR), SB_CTL,st->gain_x,TRUE);
SetDlgItemInt(hDlg, IDC_GAINX, st->gain_x,0);
SetScrollInfo(GetDlgItem(hDlg,IDC_GAINYBAR),SB_CTL,&lpsi,TRUE);
SetScrollPos(GetDlgItem(hDlg,IDC_GAINYBAR), SB_CTL,st->gain_y,TRUE);
SetDlgItemInt(hDlg, IDC_GAINY, st->gain_y,0);
SetScrollInfo(GetDlgItem(hDlg,IDC_GAINZBAR),SB_CTL,&lpsi,TRUE);
SetScrollPos(GetDlgItem(hDlg,IDC_GAINZBAR), SB_CTL,st->gain_z,TRUE);
SetDlgItemInt(hDlg, IDC_GAINZ, st->gain_z,0);
return TRUE;
case WM_CLOSE:
EndDialog(hDlg, LOWORD(wParam));
break;
case WM_COMMAND:
switch (LOWORD(wParam))
{
case IDC_STARTBAND:
if (HIWORD(wParam) == EN_KILLFOCUS)
{
st->startband=GetDlgItemInt(hDlg, IDC_STARTBAND, 0,0);
if (st->startband<0) st->endband=0;
if (st->startband>st->endband) st->startband=st->endband;
if (st->out_ports[0].get_range==-1)
{
st->out_ports[0].out_min=(float)st->startband;
for (i=0;st->out[i].to_port!=-1;i++)
if (st->out[i].from_port==0)
st->out[i].min=st->out_ports[0].out_min;
update_dimensions();
}
//memset(st->tex_buf,0,sizeof(float)*128*128);
if (st->displayWnd) InvalidateRect(st->displayWnd,NULL,TRUE);
InvalidateRect(hDlg,NULL,FALSE);
}
break;
case IDC_ENDBAND:
if (HIWORD(wParam) == EN_KILLFOCUS)
{
st->endband=GetDlgItemInt(hDlg, IDC_ENDBAND, 0,0);
if (st->endband<st->startband) st->endband=st->startband;
if (st->endband>PACKETSPERSECOND/2) st->endband=PACKETSPERSECOND/2;
if (st->out_ports[0].get_range==-1)
{
st->out_ports[0].out_max=(float)st->endband;
for (i=0;st->out[i].to_port!=-1;i++)
if (st->out[i].from_port==0)
st->out[i].max=(float)st->endband;
update_dimensions();
}
//memset(st->tex_buf,0,sizeof(float)*128*128);
if (st->displayWnd) InvalidateRect(st->displayWnd,NULL,TRUE);
InvalidateRect(hDlg,NULL,FALSE);
}
break;
case IDC_FFTALIGNCOMBO:
st->align=SendDlgItemMessage(hDlg, IDC_FFTALIGNCOMBO, CB_GETCURSEL, 0, 0 ) ;
if (st->displayWnd) InvalidateRect(st->displayWnd,NULL,TRUE);
InvalidateRect(hDlg,NULL,FALSE);
break;
case IDC_BINCOMBO:
st->binselect=SendDlgItemMessage(hDlg, IDC_BINCOMBO, CB_GETCURSEL, 0, 0 ) ;
InvalidateRect(hDlg,NULL,FALSE);
break;
case IDC_WINDOWCOMBO:
st->window=SendDlgItemMessage(hDlg, IDC_WINDOWCOMBO, CB_GETCURSEL, 0, 0 ) ;
if (st->displayWnd) InvalidateRect(st->displayWnd,NULL,TRUE);
InvalidateRect(hDlg,NULL,FALSE);
break;
case IDC_FFTKINDCOMBO:
st->kind=SendDlgItemMessage(hDlg, IDC_FFTKINDCOMBO, CB_GETCURSEL, 0, 0 ) ;
/*
if (st->kind==2) {
HDC hDC = GetDC(st->displayWnd);
wglMakeCurrent(hDC, st->GLRC_FFT);
glGenTextures(1, &textur[0]); // Create One Texture
glBindTexture(GL_TEXTURE_2D, textur[0]);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
}
else if (texture[0])
{
HDC hDC = GetDC(st->displayWnd);
wglMakeCurrent(hDC, st->GLRC_FFT);
glDeleteTextures(1,textur);
}
*/
st->h_pos=0;
if (st->displayWnd) InvalidateRect(st->displayWnd,NULL,TRUE);
InvalidateRect(hDlg,NULL,FALSE);
break;
case IDC_LOADPAL:
strcpy(szFileName,GLOBAL.resourcepath);
strcat(szFileName,"PALETTES\\*.pal");
if (open_file_dlg(hDlg, szFileName, FT_PALETTE, OPEN_LOAD))
{
if (!load_from_file(szFileName, &(st->cols), sizeof(st->cols)))
report_error("Could not load Color Palette");
else
{
reduce_filepath(szFileName,szFileName);
strcpy(st->palettefile,szFileName);
SetDlgItemText(hDlg, IDC_PALETTEFILE, st->palettefile);
if (st->displayWnd) InvalidateRect(st->displayWnd,NULL,TRUE);
}
}
InvalidateRect(hDlg,NULL,FALSE);
break;
case IDC_FFTBKCOLOR:
st->bkcol=select_color(hDlg);
if (st->displayWnd) InvalidateRect(st->displayWnd,NULL,TRUE);
InvalidateRect(hDlg,NULL,FALSE);
break;
case IDC_FFTCAPTIONS:
st->captions= IsDlgButtonChecked(hDlg, IDC_FFTCAPTIONS);
InvalidateRect(hDlg,NULL,FALSE);
break;
case IDC_CAPTION:
GetDlgItemText(hDlg, IDC_CAPTION, st->wndcaption, 50);
SetWindowText(st->displayWnd,st->wndcaption);
break;
}
break;
case WM_HSCROLL:
{
int nNewPos;
if ((nNewPos=get_scrollpos(wParam, lParam))>=0)
{
if (lParam == (long) GetDlgItem(hDlg,IDC_FFTDRAWINTERVALBAR))
{ SetDlgItemInt(hDlg, IDC_FFTDRAWINTERVAL,nNewPos,0);
st->fft_drawinterval=nNewPos;
}
if (lParam == (long) GetDlgItem(hDlg,IDC_FFTSCALEBAR))
{ SetDlgItemInt(hDlg, IDC_FFTSCALE,nNewPos,0);
st->scale=nNewPos;
}
if (lParam == (long) GetDlgItem(hDlg,IDC_GAINXBAR))
{ SetDlgItemInt(hDlg, IDC_GAINX,nNewPos,0);
st->gain_x=nNewPos;
}
if (lParam == (long) GetDlgItem(hDlg,IDC_GAINYBAR))
{ SetDlgItemInt(hDlg, IDC_GAINY,nNewPos,0);
st->gain_y=nNewPos;
}
if (lParam == (long) GetDlgItem(hDlg,IDC_GAINZBAR))
{ SetDlgItemInt(hDlg, IDC_GAINZ,nNewPos,0);
st->gain_z=nNewPos;
}
}
}
break;
case WM_ACTIVATE:
case WM_KILLFOCUS:
// case WM_SETFOCUS:
InvalidateRect(hDlg,NULL,FALSE);
break;
case WM_PAINT:
color_button(GetDlgItem(hDlg,IDC_FFTBKCOLOR),st->bkcol);
break;
case WM_SIZE:
case WM_MOVE: update_toolbox_position(hDlg);
break;
}
return FALSE;
}
LRESULT CALLBACK FFTWndHandler(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int t;
FFTOBJ * st;
static int x,y,b,xs,ys;
PAINTSTRUCT ps;
HDC hDC;
st=NULL;
for (t=0;(t<GLOBAL.objects)&&(st==NULL);t++)
if (objects[t]!=NULL)
if (objects[t]->type==OB_FFT)
{ st=(FFTOBJ *)objects[t];
if (st->displayWnd!=hWnd) st=NULL;
}
if (st!=NULL)
{
switch( message )
{
case WM_DESTROY:
Shutdown_GL(st->GLRC_FFT);
break;
case WM_KEYDOWN:
SendMessage(ghWndMain, message,wParam,lParam);
break;
case WM_MOUSEACTIVATE:
close_toolbox();
actobject=st;
SetWindowPos(hWnd,HWND_TOP,0,0,0,0,SWP_DRAWFRAME|SWP_NOMOVE|SWP_NOSIZE);
InvalidateRect(ghWndDesign,NULL,TRUE);
break;
case WM_COMMAND:
break;
case WM_MOUSEMOVE:
x = int((HIWORD(lParam))/5);
y = int((LOWORD(lParam))/5);
if (b==1)
{
st->xrot+=(x-xs);
st->yrot+=(y-ys);
}
if (b==2)
{
st->xtrans+=(x-xs);
st->ytrans+=(y-ys);
}
xs=x;ys=y;
break;
case WM_LBUTTONDOWN:
b=1;xs=x;ys=y; break;
case WM_LBUTTONUP:
b=0; break;
case WM_RBUTTONDOWN:
b=2;xs=x;ys=y; break;
case WM_RBUTTONUP:
b=0; break;
case WM_SIZE:
Size_GL(hWnd, st->GLRC_FFT,1);
case WM_MOVE:
{
WINDOWPLACEMENT wndpl;
GetWindowPlacement(st->displayWnd, &wndpl);
st->top=wndpl.rcNormalPosition.top;
st->left=wndpl.rcNormalPosition.left;
st->right=wndpl.rcNormalPosition.right;
st->bottom=wndpl.rcNormalPosition.bottom;
}
InvalidateRect(st->displayWnd,NULL,FALSE);
break;
case WM_PAINT:
{
hDC = BeginPaint(st->displayWnd, &ps);
if (wglMakeCurrent(hDC, st->GLRC_FFT))
{
Draw_FFT_GL(st);
SwapBuffers(hDC);
wglMakeCurrent(0, 0);
}
EndPaint(st->displayWnd, &ps);
}
break;
default:
return DefWindowProc( hWnd, message, wParam, lParam );
}
}
else return DefWindowProc( hWnd, message, wParam, lParam );
return 0;
}
//
// Object Implementation
//
FFTOBJ::FFTOBJ(int num) : BASE_CL()
{
inports = 1;
outports = 2;
strcpy(in_ports[0].in_name,"in");
out_ports[0].get_range=-1;
strcpy(out_ports[0].out_name,"avg");
strcpy(out_ports[0].out_dim,"Hz");
strcpy(out_ports[0].out_desc,"Average Frequency");
out_ports[0].out_max=(float)DEF_ENDBAND;
out_ports[0].out_min=(float)DEF_STARTBAND*2-DEF_ENDBAND;
out_ports[1].get_range=-1;
strcpy(out_ports[1].out_name,"pow");
strcpy(out_ports[1].out_dim,"uV");
strcpy(out_ports[1].out_desc,"Power in Bands");
out_ports[1].out_max=50.0f;
out_ports[1].out_min=0.0f;
strcpy (wndcaption,"Frequency - Spectrum");
left=50;right=300;top=330;bottom=580;captions=TRUE;
scale=100;window=1;align=DEF_ALIGN;input=0;
startband=DEF_STARTBAND;endband=DEF_ENDBAND;
for (i=0;i<128;i++) cols[i]=RGB(0,0,150);
for (i=0;i<FFT_BUFFERLEN;i++) { buffer[i]=0; fftbands[i>>1]=0; }
bkcol=RGB(250,250,250);
strcpy(palettefile,"none");
chnBufPos=0;fft_interval=0;fft_drawinterval=15;
binselect=3;
kind=0;
h_pos=0;
gain_x=50;gain_y=50;gain_z=50;
xrot=0;yrot=0;xtrans=0.0f,ytrans=0.0f;
memset(tex_buf,0,sizeof(float)*128*128);
displayWnd=NULL;
GLRC_FFT=NULL;
displayWnd=create_FFT_Window(left,right,top,bottom);
/* {
char tmp[100];
wsprintf(tmp,"GLRC:%ld",GLRC_FFT);
report (tmp);
}
*/
}
void FFTOBJ::session_start(void)
{
int i;
for (i=0;i<FFT_BUFFERLEN;i++) { buffer[i]=0; fftbands[i>>1]=0; }
chnBufPos=0;
}
void FFTOBJ::session_reset(void)
{
int i;
for (i=0;i<FFT_BUFFERLEN;i++) { buffer[i]=0; fftbands[i>>1]=0; }
chnBufPos=0;
}
void FFTOBJ::session_pos(long pos)
{
int i;
for (i=0;i<FFT_BUFFERLEN;i++) { buffer[i]=0; fftbands[i>>1]=0; }
chnBufPos=0;
}
void FFTOBJ::make_dialog(void)
{
display_toolbox(hDlg=CreateDialog(hInst, (LPCTSTR)IDD_FFTPROPBOX, ghWndStatusbox, (DLGPROC)FFTDlgHandler));
}
void FFTOBJ::load(HANDLE hFile)
{
float temp;
load_object_basics(this);
load_property("interval",P_INT,&fft_interval);
load_property("scale",P_INT,&scale);
load_property("drawinterval",P_INT,&fft_drawinterval);
load_property("startband",P_INT,&startband);
load_property("endband",P_INT,&endband);
load_property("align",P_INT,&align);
load_property("top",P_INT,&top);
load_property("left",P_INT,&left);
load_property("right",P_INT,&right);
load_property("bottom",P_INT,&bottom);
load_property("captions",P_INT,&captions);
load_property("window",P_INT,&window);
load_property("kind",P_INT,&kind);
load_property("xrot",P_INT,&xrot);
load_property("yrot",P_INT,&yrot);
load_property("gainx",P_INT,&gain_x);
load_property("gainy",P_INT,&gain_y);
load_property("gainz",P_INT,&gain_z);
load_property("xtrans",P_FLOAT,&xtrans);
load_property("ytrans",P_FLOAT,&ytrans);
load_property("binselect",P_INT,&binselect);
load_property("background",P_FLOAT,&temp);
load_property("wndcaption",P_STRING,wndcaption);
bkcol=(COLORREF) temp;
load_property("palette-file",P_STRING,palettefile);
if (strcmp(palettefile,"none"))
{
char szFileName[MAX_PATH] = "";
strcpy(szFileName,GLOBAL.resourcepath);
strcat(szFileName,"PALETTES\\");
strcat(szFileName,palettefile);
if (!load_from_file(szFileName, cols, sizeof(cols) ))
{
report_error(szFileName);
report_error("Could not load Color Palette ");
}
}
MoveWindow(displayWnd,left,top,right-left,bottom-top,TRUE);
SetWindowText(displayWnd,wndcaption);
}
void FFTOBJ::save(HANDLE hFile)
{
float temp;
save_object_basics(hFile, this);
save_property(hFile,"interval",P_INT,&fft_interval);
save_property(hFile,"scale",P_INT,&scale);
save_property(hFile,"drawinterval",P_INT,&fft_drawinterval);
save_property(hFile,"startband",P_INT,&startband);
save_property(hFile,"endband",P_INT,&endband);
save_property(hFile,"align",P_INT,&align);
save_property(hFile,"top",P_INT,&top);
save_property(hFile,"left",P_INT,&left);
save_property(hFile,"right",P_INT,&right);
save_property(hFile,"bottom",P_INT,&bottom);
save_property(hFile,"captions",P_INT,&captions);
save_property(hFile,"window",P_INT,&window);