package-update/graphic/fbgrab/565-fixup.patch

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Fixed fbgrab for big-endian systems, including a code cleanup on the way.

  - Rene Rebe

--- fbgrab-1.0/fbgrab.c	2002-04-15 22:22:54.000000000 +0200
+++ fbgrab-1.0-fixed/fbgrab.c	2004-09-05 16:12:42.874276472 +0200
@@ -166,15 +166,17 @@
 
     for (i=0; i < (unsigned int) height*width*2; i+=2)
     {
-	/* BLUE  = 0 */
-	outbuffer[(i<<1)+0] = (inbuffer[i] & 0x1f) << 3;
-	/* GREEN = 1 */
-        outbuffer[(i<<1)+1] = (((inbuffer[i+1] & 0x7) << 3) | 
-			     (inbuffer[i] & 0xE0) >> 5) << 2;	
-        /* RED   = 2 */
-	outbuffer[(i<<1)+2] = (inbuffer[i+1] & 0xF8);
-	/* ALPHA = 3 */
-	outbuffer[(i<<1)+3] = '\0'; 
+	int16_t v =
+#ifdef __BIG_ENDIAN__
+		(inbuffer[i] << 8) + inbuffer[i+1];
+#else
+		(inbuffer[i+1] << 8) + inbuffer[i];
+#endif
+
+	outbuffer[(i<<1)+0] = (v << 3) & 0xf8; /* B */
+	outbuffer[(i<<1)+1] = (v >> 3) & 0xfc; /* G */
+	outbuffer[(i<<1)+2] = (v >> 8) & 0xf8; /* R */
+	outbuffer[(i<<1)+3] = 0; /* A */
     }
 }