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//
// build an array where x=color intensity and y=number of colors with that intensity.
// use with fs.hist.pd.
//
// array is passed in a file, a better solution would be to use vframe...
//
#include <stdlib.h>
#include <stdio.h>
#include <iostream.h>
#include <fstream.h>
#include <string.h>
#include "plugin.h"
#include "pixels.h"
void perform_effect(_frame f, _args a)
{
if(!a.s) return;
// parameters: <color> <filename for output> <pd receivename to bang>
// get gol
byte col = atoi(a.s);
// get filename
char *t;
if(!(t = strstr(a.s, " "))) return;
char *filename = t+1;
// get receivename
if(!(t = strstr(t+1, " "))) return;
char *retname = t+1;
t[0]=0; // tell filename and receivename apart
pixels p(f);
signed short hist[256]; // 16bits, for read16 on pd
// count colors from zero up
memset(hist, 0, sizeof(hist));
// or count from -2^15 (bottom of graph)?
// short i, v=1<<15;
// for(i=0; i<256; hist[i++]=v) ;
while(!p.eof())
{
++hist[col==0 ? p.red() : col==1 ? p.green() : col==2 ? p.blue() : 0];
p.next();
}
ofstream of(filename, ios::out|ios::binary);
of.write((char *)&hist, sizeof(hist));
of.close();
sprintf(a.ret, "%s=1", retname); // bang to indicate we're done
}
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