Description:

source/libvpx/vp8/common/x86/variance_mmx.c

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 73 matching lines @@
     int  source_stride,
     const unsigned char *ref_ptr,
     int  recon_stride,
     unsigned int *sse)
 {
     unsigned int var;
     int avg;
 
     vp8_get4x4var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &var, &avg) ;
     *sse = var;
-    return (var - ((unsigned int)(avg * avg) >> 4));
+    return (var - (((unsigned int)avg * avg) >> 4));
 
 }
 
 unsigned int vp8_variance8x8_mmx(
     const unsigned char *src_ptr,
     int  source_stride,
     const unsigned char *ref_ptr,
     int  recon_stride,
     unsigned int *sse)
 {
     unsigned int var;
     int avg;
 
     vp8_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &var, &avg) ;
     *sse = var;
 
-    return (var - ((unsigned int)(avg * avg) >> 6));
+    return (var - (((unsigned int)avg * avg) >> 6));
 
 }
 
 unsigned int vp8_mse16x16_mmx(
     const unsigned char *src_ptr,
     int  source_stride,
     const unsigned char *ref_ptr,
     int  recon_stride,
     unsigned int *sse)
 {
@@ skipping 24 matching lines @@
 
 
     vp8_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0, &sum0) ;
     vp8_get8x8var_mmx(src_ptr + 8, source_stride, ref_ptr + 8, recon_stride, &sse1, &sum1);
     vp8_get8x8var_mmx(src_ptr + 8 * source_stride, source_stride, ref_ptr + 8 * recon_stride, recon_stride, &sse2, &sum2) ;
     vp8_get8x8var_mmx(src_ptr + 8 * source_stride + 8, source_stride, ref_ptr + 8 * recon_stride + 8, recon_stride, &sse3, &sum3);
 
     var = sse0 + sse1 + sse2 + sse3;
     avg = sum0 + sum1 + sum2 + sum3;
     *sse = var;
-    return (var - ((unsigned int)(avg * avg) >> 8));
+    return (var - (((unsigned int)avg * avg) >> 8));
 }
 
 unsigned int vp8_variance16x8_mmx(
     const unsigned char *src_ptr,
     int  source_stride,
     const unsigned char *ref_ptr,
     int  recon_stride,
     unsigned int *sse)
 {
     unsigned int sse0, sse1, var;
     int sum0, sum1, avg;
 
     vp8_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0, &sum0) ;
     vp8_get8x8var_mmx(src_ptr + 8, source_stride, ref_ptr + 8, recon_stride, &sse1, &sum1);
 
     var = sse0 + sse1;
     avg = sum0 + sum1;
     *sse = var;
-    return (var - ((unsigned int)(avg * avg) >> 7));
+    return (var - (((unsigned int)avg * avg) >> 7));
 
 }
 
 
 unsigned int vp8_variance8x16_mmx(
     const unsigned char *src_ptr,
     int  source_stride,
     const unsigned char *ref_ptr,
     int  recon_stride,
     unsigned int *sse)
 {
     unsigned int sse0, sse1, var;
     int sum0, sum1, avg;
 
     vp8_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0, &sum0) ;
     vp8_get8x8var_mmx(src_ptr + 8 * source_stride, source_stride, ref_ptr + 8 * recon_stride, recon_stride, &sse1, &sum1) ;
 
     var = sse0 + sse1;
     avg = sum0 + sum1;
     *sse = var;
 
-    return (var - ((unsigned int)(avg * avg) >> 7));
+    return (var - (((unsigned int)avg * avg) >> 7));
 
 }
 
 
 unsigned int vp8_sub_pixel_variance4x4_mmx
 (
     const unsigned char  *src_ptr,
     int  src_pixels_per_line,
     int  xoffset,
     int  yoffset,
     const unsigned char *dst_ptr,
     int dst_pixels_per_line,
     unsigned int *sse)
 
 {
     int xsum;
     unsigned int xxsum;
     vp8_filter_block2d_bil4x4_var_mmx(
         src_ptr, src_pixels_per_line,
         dst_ptr, dst_pixels_per_line,
         vp8_bilinear_filters_x86_4[xoffset], vp8_bilinear_filters_x86_4[yoffset],
         &xsum, &xxsum
     );
     *sse = xxsum;
-    return (xxsum - ((unsigned int)(xsum * xsum) >> 4));
+    return (xxsum - (((unsigned int)xsum * xsum) >> 4));
 }
 
 
 unsigned int vp8_sub_pixel_variance8x8_mmx
 (
     const unsigned char  *src_ptr,
     int  src_pixels_per_line,
     int  xoffset,
     int  yoffset,
     const unsigned char *dst_ptr,
     int dst_pixels_per_line,
     unsigned int *sse
 )
 {
 
     int xsum;
     unsigned int xxsum;
     vp8_filter_block2d_bil_var_mmx(
         src_ptr, src_pixels_per_line,
         dst_ptr, dst_pixels_per_line, 8,
         vp8_bilinear_filters_x86_4[xoffset], vp8_bilinear_filters_x86_4[yoffset],
         &xsum, &xxsum
     );
     *sse = xxsum;
-    return (xxsum - ((unsigned int)(xsum * xsum) >> 6));
+    return (xxsum - (((unsigned int)xsum * xsum) >> 6));
 }
 
 unsigned int vp8_sub_pixel_variance16x16_mmx
 (
     const unsigned char  *src_ptr,
     int  src_pixels_per_line,
     int  xoffset,
     int  yoffset,
     const unsigned char *dst_ptr,
     int dst_pixels_per_line,
@@ skipping 17 matching lines @@
         src_ptr + 8, src_pixels_per_line,
         dst_ptr + 8, dst_pixels_per_line, 16,
         vp8_bilinear_filters_x86_4[xoffset], vp8_bilinear_filters_x86_4[yoffset],
         &xsum1, &xxsum1
     );
 
     xsum0 += xsum1;
     xxsum0 += xxsum1;
 
     *sse = xxsum0;
-    return (xxsum0 - ((unsigned int)(xsum0 * xsum0) >> 8));
+    return (xxsum0 - (((unsigned int)xsum0 * xsum0) >> 8));
 
 
 }
 
 unsigned int vp8_sub_pixel_mse16x16_mmx(
     const unsigned char  *src_ptr,
     int  src_pixels_per_line,
     int  xoffset,
     int  yoffset,
     const unsigned char *dst_ptr,
@@ skipping 32 matching lines @@
         src_ptr + 8, src_pixels_per_line,
         dst_ptr + 8, dst_pixels_per_line, 8,
         vp8_bilinear_filters_x86_4[xoffset], vp8_bilinear_filters_x86_4[yoffset],
         &xsum1, &xxsum1
     );
 
     xsum0 += xsum1;
     xxsum0 += xxsum1;
 
     *sse = xxsum0;
-    return (xxsum0 - ((unsigned int)(xsum0 * xsum0) >> 7));
+    return (xxsum0 - (((unsigned int)xsum0 * xsum0) >> 7));
 }
 
 unsigned int vp8_sub_pixel_variance8x16_mmx
 (
     const unsigned char  *src_ptr,
     int  src_pixels_per_line,
     int  xoffset,
     int  yoffset,
     const unsigned char *dst_ptr,
     int dst_pixels_per_line,
     unsigned int *sse
 )
 {
     int xsum;
     unsigned int xxsum;
     vp8_filter_block2d_bil_var_mmx(
         src_ptr, src_pixels_per_line,
         dst_ptr, dst_pixels_per_line, 16,
         vp8_bilinear_filters_x86_4[xoffset], vp8_bilinear_filters_x86_4[yoffset],
         &xsum, &xxsum
     );
     *sse = xxsum;
-    return (xxsum - ((unsigned int)(xsum * xsum) >> 7));
+    return (xxsum - (((unsigned int)xsum * xsum) >> 7));
 }
 
 
 unsigned int vp8_variance_halfpixvar16x16_h_mmx(
     const unsigned char *src_ptr,
     int  source_stride,
     const unsigned char *ref_ptr,
     int  recon_stride,
     unsigned int *sse)
 {
@@ skipping 17 matching lines @@
 unsigned int vp8_variance_halfpixvar16x16_hv_mmx(
     const unsigned char *src_ptr,
     int  source_stride,
     const unsigned char *ref_ptr,
     int  recon_stride,
     unsigned int *sse)
 {
     return vp8_sub_pixel_variance16x16_mmx(src_ptr, source_stride, 4, 4,
                                            ref_ptr, recon_stride, sse);
 }