X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fmodules%2Fgtk2%2Fpixops.c;h=c4079c4215327391e224290ea3321e3655d15fad;hb=a91bf759a557ca90e7ab46bac0050cab98c96272;hp=5956b6e1e6c4b4321d1e2c6b01d485aab4b1617d;hpb=6a88c076b7dfdc87720ef3f344e5f46f867e51ac;p=melted

diff --git a/src/modules/gtk2/pixops.c b/src/modules/gtk2/pixops.c
index 5956b6e..c4079c4 100644
--- a/src/modules/gtk2/pixops.c
+++ b/src/modules/gtk2/pixops.c
@@ -1,9 +1,12 @@
 /* GdkPixbuf library - Scaling and compositing functions
  *
- * Copyright (C) 1999 The Free Software Foundation
- *
+ * Original:
+ * Copyright (C) 2000 Red Hat, Inc
  * Author: Owen Taylor <otaylor@redhat.com>
- * Modified for YUV422 by Dan Dennedy <dan@dennedy.org>
+ *
+ * Modification for MLT:
+ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
+ * Author: Dan Dennedy <dan@dennedy.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -59,7 +62,7 @@ typedef void ( *PixopsPixelFunc ) ( guchar *dest, guint y1, guint cr, guint y2,
 
 /* mmx function declarations */
 #ifdef USE_MMX
-guchar *pixops_scale_line_22_33_mmx ( guint32 weights[ 16 ][ 8 ], guchar *p, guchar *q1, guchar *q2, int x_step, guchar *p_stop, int x_init );
+guchar *pixops_scale_line_22_yuv_mmx ( guint32 weights[ 16 ][ 8 ], guchar *p, guchar *q1, guchar *q2, int x_step, guchar *p_stop, int x_init, int destx );
 int pixops_have_mmx ( void );
 #endif
 
@@ -158,7 +161,7 @@ scale_line ( int *weights, int n_x, int n_y,
 
 #ifdef USE_MMX
 static inline guchar *
-scale_line_22_33_mmx_stub ( int *weights, int n_x, int n_y,
+scale_line_22_yuv_mmx_stub ( int *weights, int n_x, int n_y,
                             guchar *dest, int dest_x, guchar *dest_end,
                             guchar **src,
                             int x_init, int x_step, int src_width )
@@ -178,12 +181,12 @@ scale_line_22_33_mmx_stub ( int *weights, int n_x, int n_y,
 		mmx_weights[ j ][ 7 ] = 0x00010001 * ( weights[ 4 * j + 3 ] >> 8 );
 	}
 
-	return pixops_scale_line_22_33_mmx ( mmx_weights, dest, src[ 0 ], src[ 1 ], x_step, dest_end, x_init );
+	return pixops_scale_line_22_yuv_mmx ( mmx_weights, dest, src[ 0 ], src[ 1 ], x_step, dest_end, x_init, dest_x );
 }
 #endif /* USE_MMX */
 
 static inline guchar *
-scale_line_22_33 ( int *weights, int n_x, int n_y,
+scale_line_22_yuv ( int *weights, int n_x, int n_y,
                    guchar *dest, int dest_x, guchar *dest_end,
                    guchar **src,
                    int x_init, int x_step, int src_width )
@@ -218,17 +221,19 @@ scale_line_22_33 ( int *weights, int n_x, int n_y,
 
 		/* process U/V */
 		x_aligned = ( ( x_scaled >> 1 ) << 2 );
+		uv_index = ( ( dest_x & 1 ) << 1 ) + 1;
+		
 		q0 = src0 + x_aligned;
 		q1 = src1 + x_aligned;
-		uv_index = ( ( dest_x & 1 ) << 1 ) + 1;
 		p  = w1 * q0[ uv_index ];
-		p += w2 * q0[ uv_index ];
 		p += w3 * q1[ uv_index ];
+		p += w2 * q0[ uv_index ];
 		p += w4 * q1[ uv_index ];
-		*dest++ = ( p + 0x8000 ) >> SCALE_SHIFT;
-
+		
 		x += x_step;
-		dest_x++;
+		dest_x ++;
+
+		*dest++ = ( p + 0x8000 ) >> SCALE_SHIFT;
 	}
 
 	return dest;
@@ -710,7 +715,7 @@ yuv422_scale ( guchar *dest_buf,
                double scale_y,
                PixopsInterpType interp_type )
 {
-	PixopsFilter filter;
+	PixopsFilter filter = { { 0, 0, 0}, { 0, 0, 0 }, 0 };
 	PixopsLineFunc line_func;
 
 #ifdef USE_MMX
@@ -739,12 +744,15 @@ yuv422_scale ( guchar *dest_buf,
 	if ( filter.x.n == 2 && filter.y.n == 2 )
 	{
 #ifdef USE_MMX
-		if ( 0 && found_mmx )
-			line_func = scale_line_22_33_mmx_stub;
+		if ( found_mmx )
+		{
+			//fprintf( stderr, "rescale: using mmx\n" );
+			line_func = scale_line_22_yuv_mmx_stub;
+		}
 		else
 #endif
 
-			line_func = scale_line_22_33;
+			line_func = scale_line_22_yuv;
 	}
 	else
 		line_func = scale_line;