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//
// sonogram.cpp
//
// use with fs.sonogram
//
// see example-sonogram.pd
//
#include <stdlib.h>
#include <stdio.h>
#include <iostream.h>
#include <fstream.h>
#include <string.h>
#include "plugin.h"
#include "pixels.h"
#define SONOSIZE 128
#define SONOMAXVAL 500
#define sonotype float
int callcount=-1;
void perform_effect(_frame f, _args a)
{
if(!a.s) return;
if(++callcount>=f.width) callcount=0;
FILE *inf;
if((inf = fopen(a.s, "rb"))==NULL)
{
printf("sonogram: error opening %s\n", a.s);
return;
}
char buf[80];
sonotype sono[SONOSIZE];
int i=0;
while(!feof(inf))
{
if(!fgets(buf, 80, inf))
{
printf("sonogram: read error.\n");
return;
}
sono[i] = atof(buf);
if(++i>=SONOSIZE) break;
}
fclose(inf);
int y;
for(i=0; i<SONOSIZE; i++)
{
// scale values 0-500 to 0-255
if(sono[i]>SONOMAXVAL) sono[i]=SONOMAXVAL;
sono[i] = (sonotype)((sono[i] / (float)SONOMAXVAL)*255);
// white = no sound
sono[i] = abs(sono[i]-255);
y = (int)((i / (float)SONOSIZE) * (float)f.height);
// bottom = bass
y = abs((f.height-1) - y);
switch(f.pixelformat)
{
case 16:
scanline16(f, y)[callcount] =
rgbtocolor16(sono[i], sono[i], sono[i]);
break;
case 24:
scanline24(f, y)[callcount] =
rgbtocolor24(sono[i], sono[i], sono[i]);
break;
case 32:
scanline32(f, y)[callcount] =
rgbtocolor32(sono[i], sono[i], sono[i]);
break;
}
}
}
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