Merge CV, ver=5.1; ops/methods from HV, and interface from CV where possible

[goodguy/history.git] / cinelerra-5.0 / db / utils / histplot.C

diff --git a/cinelerra-5.0/db/utils/histplot.C b/cinelerra-5.0/db/utils/histplot.C
deleted file mode 100644 (file)
index b0957ca..0000000
--- a/cinelerra-5.0/db/utils/histplot.C
+++ /dev/null
@@ -1,50 +0,0 @@
-#include<stdio.h>
-#include<stdlib.h>
-#include<string.h>
-
-void hist_eq(unsigned char *data, int len, int n)
-{
-  while( --n >= 0 ) {
-    int hist[256];
-    for( int i=0; i<256; ++i ) hist[i] = 0;
-    unsigned char *bp = data;
-    for( int i=len; --i>=0; ++bp ) ++hist[*bp];
-    for( int t=0, i=0; i<256; ++i ) { t += hist[i];  hist[i] = t; }
-
-    int mn = 0;    while( mn<255 && !hist[mn] ) ++mn;
-    int mx = 256;  while( mx>mn && hist[mx-1]==len ) --mx;
-    double r = (double)(mx - mn) / (256-1);
-    int map[256];  map[0] = 0;  map[255] = 255;
-    double dv = (len-1) / 256., v = dv;
-    for( int i=1; i<255; ++i, v+=dv ) {
-      int j = i * r + mn;
-      map[i] = i * (1-(v - hist[j])/len);
-    }
-//for( int i=0; i<256; ++i ) fprintf(stderr,"%d\n",map[i]);
-    bp = data;
-    for( int i=len; --i>=0; ++bp ) *bp = map[*bp];
-  }
-}
-
-int main(int ac, char **av)
-{
-  FILE *ifp = !strcmp(av[1],"-") ? stdin : fopen(av[1],"r");
-  char line[120];
-  fgets(line,sizeof(line),ifp);
-  fgets(line,sizeof(line),ifp);
-  int w, h;  if( sscanf(line,"%d %d\n",&w,&h) != 2 ) exit(1);
-  fgets(line,sizeof(line),ifp);
-  int len = w*h;
-  unsigned char data[len], *bp = data;
-  for( int ch, i=len; --i>=0 && (ch=getc(ifp)) >= 0; ++bp ) *bp = ch;
-
-  int hist[256]; for( int i=0; i<256; ++i ) hist[i] = 0;
-  bp = data;     for( int i=len; --i>=0; ++bp ) ++hist[*bp];
-  for( int t=0, i=0; i<256; ++i ) { t += hist[i];  hist[i] = t; }
-  FILE *ofp = popen("gnuplot -e \"set terminal png; plot \\\"-\\\" with lines\" | xv - &","w");
-  for( int i=0; i<256; ++i ) fprintf(ofp,"%d\n",hist[i]);
-  fclose(ofp);
-  if( ifp != stdin ) fclose(ifp);
-  return 0;
-}
-