Description:

source/libvpx/vp8/common/x86/variance_sse2.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 130 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_wmt
 (
     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_sse2(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_variance16x16_wmt
 (
     const unsigned char *src_ptr,
     int  source_stride,
     const unsigned char *ref_ptr,
     int  recon_stride,
     unsigned int *sse)
 {
     unsigned int sse0;
     int sum0;
 
 
     vp8_get16x16var_sse2(src_ptr, source_stride, ref_ptr, recon_stride, &sse0, &sum0) ;
     *sse = sse0;
-    return (sse0 - ((unsigned int)(sum0 * sum0) >> 8));
+    return (sse0 - (((unsigned int)sum0 * sum0) >> 8));
 }
 unsigned int vp8_mse16x16_wmt(
     const unsigned char *src_ptr,
     int  source_stride,
     const unsigned char *ref_ptr,
     int  recon_stride,
     unsigned int *sse)
 {
 
     unsigned int sse0;
@@ skipping 15 matching lines @@
 {
     unsigned int sse0, sse1, var;
     int sum0, sum1, avg;
 
     vp8_get8x8var_sse2(src_ptr, source_stride, ref_ptr, recon_stride, &sse0, &sum0) ;
     vp8_get8x8var_sse2(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_wmt
 (
     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_sse2(src_ptr, source_stride, ref_ptr, recon_stride, &sse0, &sum0) ;
     vp8_get8x8var_sse2(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_wmt
 (
     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_wmt
 (
     const unsigned char  *src_ptr,
     int  src_pixels_per_line,
     int  xoffset,
     int  yoffset,
     const unsigned char *dst_ptr,
@@ skipping 28 matching lines @@
     else
     {
         vp8_filter_block2d_bil_var_sse2(
             src_ptr, src_pixels_per_line,
             dst_ptr, dst_pixels_per_line, 8,
             xoffset, 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_wmt
 (
     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 41 matching lines @@
             src_ptr + 8, src_pixels_per_line,
             dst_ptr + 8, dst_pixels_per_line, 16,
             xoffset, 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_wmt(
     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
@@ skipping 50 matching lines @@
         vp8_filter_block2d_bil_var_sse2(
             src_ptr + 8, src_pixels_per_line,
             dst_ptr + 8, dst_pixels_per_line, 8,
             xoffset, 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_wmt
 (
     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 27 matching lines @@
     else
     {
         vp8_filter_block2d_bil_var_sse2(
             src_ptr, src_pixels_per_line,
             dst_ptr, dst_pixels_per_line, 16,
             xoffset, 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_wmt(
     const unsigned char *src_ptr,
     int  src_pixels_per_line,
     const unsigned char *dst_ptr,
     int  dst_pixels_per_line,
     unsigned int *sse)
 {
     int xsum0;
     unsigned int xxsum0;
 
     vp8_half_horiz_variance16x_h_sse2(
         src_ptr, src_pixels_per_line,
         dst_ptr, dst_pixels_per_line, 16,
         &xsum0, &xxsum0);
 
     *sse = xxsum0;
-    return (xxsum0 - ((unsigned int)(xsum0 * xsum0) >> 8));
+    return (xxsum0 - (((unsigned int)xsum0 * xsum0) >> 8));
 }
 
 
 unsigned int vp8_variance_halfpixvar16x16_v_wmt(
     const unsigned char *src_ptr,
     int  src_pixels_per_line,
     const unsigned char *dst_ptr,
     int  dst_pixels_per_line,
     unsigned int *sse)
 {
     int xsum0;
     unsigned int xxsum0;
     vp8_half_vert_variance16x_h_sse2(
         src_ptr, src_pixels_per_line,
         dst_ptr, dst_pixels_per_line, 16,
         &xsum0, &xxsum0);
 
     *sse = xxsum0;
-    return (xxsum0 - ((unsigned int)(xsum0 * xsum0) >> 8));
+    return (xxsum0 - (((unsigned int)xsum0 * xsum0) >> 8));
 }
 
 
 unsigned int vp8_variance_halfpixvar16x16_hv_wmt(
     const unsigned char *src_ptr,
     int  src_pixels_per_line,
     const unsigned char *dst_ptr,
     int  dst_pixels_per_line,
     unsigned int *sse)
 {
     int xsum0;
     unsigned int xxsum0;
 
     vp8_half_horiz_vert_variance16x_h_sse2(
         src_ptr, src_pixels_per_line,
         dst_ptr, dst_pixels_per_line, 16,
         &xsum0, &xxsum0);
 
     *sse = xxsum0;
-    return (xxsum0 - ((unsigned int)(xsum0 * xsum0) >> 8));
+    return (xxsum0 - (((unsigned int)xsum0 * xsum0) >> 8));
 }