vo_vesa: more rgb2rgb support

Originally committed as revision 2506 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

postproc/rgb2rgb.c

@@ -2,6 +2,8 @@
 #include "../config.h"
 #include "rgb2rgb.h"
 
+/* TODO: MMX optimization */
+
 void rgb24to32(uint8_t *src,uint8_t *dst,uint32_t src_size)
 {
   uint32_t *dest = (uint32_t *)dst;
@@ -16,3 +18,18 @@ void rgb24to32(uint8_t *src,uint8_t *dst,uint32_t src_size)
     s += 3;
   }
 }
+
+void rgb32to24(uint8_t *src,uint8_t *dst,uint32_t src_size)
+{
+  uint8_t *dest = dst;
+  uint8_t *s = src;
+  uint8_t *end;
+  end = s + src_size;
+  while(s < end)
+  {
+    *dest++ = *s++;
+    *dest++ = *s++;
+    *dest++ = *s++;
+    s++;
+  }
+}

postproc/rgb2rgb.h

 /* 
  *
- *  rgb2rgb.h, Software RGB to RGB coverter
+ *  rgb2rgb.h, Software RGB to RGB converter
  *
  */
 
@@ -8,5 +8,6 @@
 #define RGB2RGB_INCLUDED
 
 extern void rgb24to32(uint8_t *src,uint8_t *dst,uint32_t src_size);
+extern void rgb32to24(uint8_t *src,uint8_t *dst,uint32_t src_size);
 
 #endif

postproc/rgb2rgb_template.c

@@ -2,6 +2,8 @@
 #include "../config.h"
 #include "rgb2rgb.h"
 
+/* TODO: MMX optimization */
+
 void rgb24to32(uint8_t *src,uint8_t *dst,uint32_t src_size)
 {
   uint32_t *dest = (uint32_t *)dst;
@@ -16,3 +18,18 @@ void rgb24to32(uint8_t *src,uint8_t *dst,uint32_t src_size)
     s += 3;
   }
 }
+
+void rgb32to24(uint8_t *src,uint8_t *dst,uint32_t src_size)
+{
+  uint8_t *dest = dst;
+  uint8_t *s = src;
+  uint8_t *end;
+  end = s + src_size;
+  while(s < end)
+  {
+    *dest++ = *s++;
+    *dest++ = *s++;
+    *dest++ = *s++;
+    s++;
+  }
+}