opengl colorspace + BT2020

[goodguy/history.git] / cinelerra-5.1 / guicast / test5.C

diff --git a/cinelerra-5.1/guicast/test5.C b/cinelerra-5.1/guicast/test5.C
new file mode 100644 (file)
index 0000000..81fa6dd
--- /dev/null
+++ b/cinelerra-5.1/guicast/test5.C
@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <math.h>
+#include "bccolors.C"
+
+//c++ -g -I../guicast test5.C ../guicast/x86_64/libguicast.a \
+// -DHAVE_GL -DHAVE_XFT -I/usr/include/freetype2 -lGL -lX11 -lXext \
+// -lXinerama -lXv -lpng  -lfontconfig -lfreetype -lXft -pthread
+
+int main(int ac, char **av)
+{
+  int rgb2yuv = atoi(av[1]);
+  int color = atoi(av[2]);
+  int range = atoi(av[3]);
+
+  YUV::yuv.yuv_set_colors(color, range);
+  if( !rgb2yuv ) {
+    for( int y=0; y<0x100; ++y ) {
+      for( int u=0; u<0x100; ++u ) {
+        for( int v=0; v<0x100; ++v ) {
+          float fy = y/255.f, fu = u/255.f - 0.5f, fv = v/255.f - 0.5f;
+          float fr, fg, fb;  YUV::yuv.yuv_to_rgb_f(fr,fg,fb, fy,fu,fv);
+          if( fr<0 || fr>1 || fg<0 || fg>1 || fb<0 || fb>1 )
+               continue;
+          float yy, uu, vv;  YUV::yuv.rgb_to_yuv_f(fr,fg,fb, yy,uu,vv);
+          float d = fabsf(fy-yy) + fabsf(fu-uu) + fabsf(fv-vv);
+          int rr = fr*256, gg = fg*256, bb = fb*256;
+          CLAMP(rr,0,255); CLAMP(gg,0,255); CLAMP(bb,0,255);
+          printf("yuv 0x%02x 0x%02x 0x%02x =%f,%f,%f, "
+                 "rgb 0x%02x 0x%02x 0x%02x =%f,%f,%f, "
+                 "  %f,%f,%f, %f\n",
+            y,u,v, fy,fu,fv, rr,gg,bb, fr,fg,fb, yy,uu,vv, d);
+        }
+      }
+    }
+  }
+  else {
+    for( int r=0; r<0x100; ++r ) {
+      for( int g=0; g<0x100; ++g ) {
+        for( int b=0; b<0x100; ++b ) {
+          float fr = r/255.f, fg = g/255.f, fb = b/255.f;
+          float fy, fu, fv;  YUV::yuv.rgb_to_yuv_f(fr,fg,fb, fy,fu,fv);
+          if( fy<0 || fy>1 || fu<0 || fu>1 || fv<0 || fv>1 )
+               continue;
+          float rr, gg, bb;  YUV::yuv.yuv_to_rgb_f(rr,gg,bb, fy,fu,fv);
+          float d = fabsf(fr-rr) + fabsf(fg-gg) + fabsf(fb-bb);
+          int yy = fy*256, uu = fu*256, vv = fv*256;
+          CLAMP(yy,0,255); CLAMP(uu,0,255); CLAMP(vv,0,255);
+          printf("rgb 0x%02x 0x%02x 0x%02x =%f,%f,%f, "
+                 "yuv 0x%02x 0x%02x 0x%02x =%f,%f,%f, "
+                 "  %f,%f,%f, %f\n",
+            r,g,b, fr,fg,fb, yy,uu,vv, fy,fu,fv, rr,gg,bb, d);
+        }
+      }
+    }
+  }
+  return 0;
+}
+