[patch] te0 te1 te2 shiftmask fix

libmovtar-0.1.3-asm.diff (text/plain), 1.37 KB, created by Michael Cramer on 2005-07-31 12:39:30 UTC

--- libmovtar-0.1.3.orig/movtar_play.c	2001-07-13 21:38:03.000000000 +0000
+++ libmovtar-0.1.3/movtar_play.c	2005-07-31 19:22:08.000000000 +0000
@@ -141,9 +141,9 @@
 #if defined(__GNUC__)
 #define int64 unsigned long long
 #endif
-static const int64 te0 = 0x0080008000800080; // -128 << 2
-static const int64 te1 = 0xe9fa7168e9fa7168; // for cb 
-static const int64 te2 = 0x59bad24d59bad24d; // for cr
+static int64 te0 = 0x0080008000800080; // -128 << 2
+static int64 te1 = 0xe9fa7168e9fa7168; // for cb 
+static int64 te2 = 0x59bad24d59bad24d; // for cr
 
 METHODDEF(void)
 ycc_rgb32_convert_mmx (j_decompress_ptr cinfo,
@@ -267,10 +267,15 @@
 static int64 rb16mult = 0x2000000820000008; // mult/Add factor (see intel appnote 553)
 static int64 g16mask = 0x0000f8000000f800; // just green remains
 static int64 rgb16offset = 6; // shift right after the whole stuff
-static const int64 shiftmask = 0xffff; // shift right after the whole stuff
+static int64 shiftmask = 0xffff; // shift right after the whole stuff
 
 void calc_rgb16_params(struct SDL_PixelFormat *format)
 {
+  shiftmask = 0xffff;
+  te0 = 0x0080008000800080;
+  te1 = 0xe9fa7168e9fa7168; 
+  te2 = 0x59bad24d59bad24d;
+
   rb16mask = ((0xff >> format->Rloss) << (16 + format->Rloss)) 
             | (0xff >> format->Bloss) << format->Bloss;
   rb16mask = rb16mask | (rb16mask << 32); // two pixels at once (see default long above)