Ticket #1073: yuv2rgb.diff

libs/libmythtv/yuv2rgb.cpp

@@ -25 +25 @@
 
 #include <cstdio>
 #include <cstdlib>
+#include <algorithm>
 #include <inttypes.h>
 #include "config.h"
 
@@ -391 +392 @@
 #define RGBOUT(r, g, b, y1)\
 {\
     y = (y1 - 16) * C_Y;\
-    r = (y + r_add) >> SCALE_BITS;\
-    g = (y + g_add) >> SCALE_BITS;\
-    b = (y + b_add) >> SCALE_BITS;\
+    r = std::min(UCHAR_MAX, std::max(0, (y + r_add) >> SCALE_BITS));\
+    g = std::min(UCHAR_MAX, std::max(0, (y + g_add) >> SCALE_BITS));\
+    b = std::min(UCHAR_MAX, std::max(0, (y + b_add) >> SCALE_BITS));\
 }
 
 static void yuv420_argb32_non_mmx(unsigned char *image, unsigned char *py,