shithub: libvpx

Download patch

ref: 4498194bad77689131bb2e6e5661e7394de88dde
parent: dea687f7337b6a68f4f79ef1fcd611cab53a67a6
author: Dmitry Kovalev <dkovalev@google.com>
date: Fri May 2 07:08:11 EDT 2014 

Cleaning up vp9_variance.c

Change-Id: Ie2b9c9881085053c191f3f7b8253e283edef573b


--- a/vp9/encoder/vp9_variance.c
+++ b/vp9/encoder/vp9_variance.c
@@ -113,12 +113,9 @@
 unsigned int vp9_variance##W##x##H##_c(const uint8_t *a, int a_stride, \
                                        const uint8_t *b, int b_stride, \
                                        unsigned int *sse) { \
-  unsigned int var; \
-  int avg; \
-\
-  variance(a, a_stride, b, b_stride, W, H, &var, &avg); \
-  *sse = var; \
-  return var - (((int64_t)avg * avg) / (W * H)); \
+  int sum; \
+  variance(a, a_stride, b, b_stride, W, H, sse, &sum); \
+  return *sse - (((int64_t)sum * sum) / (W * H)); \
 }
 
 #define SUBPIX_VAR(W, H) \
@@ -172,56 +169,36 @@
   variance(src_ptr, source_stride, ref_ptr, ref_stride, 8, 8, sse, sum);
 }
 
-unsigned int vp9_mse16x16_c(const uint8_t *src_ptr,
-                            int  source_stride,
-                            const uint8_t *ref_ptr,
-                            int  recon_stride,
+unsigned int vp9_mse16x16_c(const uint8_t *src, int src_stride,
+                            const uint8_t *ref, int ref_stride,
                             unsigned int *sse) {
-  unsigned int var;
-  int avg;
-
-  variance(src_ptr, source_stride, ref_ptr, recon_stride, 16, 16, &var, &avg);
-  *sse = var;
-  return var;
+  int sum;
+  variance(src, src_stride, ref, ref_stride, 16, 16, sse, &sum);
+  return *sse;
 }
 
-unsigned int vp9_mse16x8_c(const uint8_t *src_ptr,
-                           int  source_stride,
-                           const uint8_t *ref_ptr,
-                           int  recon_stride,
+unsigned int vp9_mse16x8_c(const uint8_t *src, int src_stride,
+                           const uint8_t *ref, int ref_stride,
                            unsigned int *sse) {
-  unsigned int var;
-  int avg;
-
-  variance(src_ptr, source_stride, ref_ptr, recon_stride, 16, 8, &var, &avg);
-  *sse = var;
-  return var;
+  int sum;
+  variance(src, src_stride, ref, ref_stride, 16, 8, sse, &sum);
+  return *sse;
 }
 
-unsigned int vp9_mse8x16_c(const uint8_t *src_ptr,
-                           int  source_stride,
-                           const uint8_t *ref_ptr,
-                           int  recon_stride,
+unsigned int vp9_mse8x16_c(const uint8_t *src, int src_stride,
+                           const uint8_t *ref, int ref_stride,
                            unsigned int *sse) {
-  unsigned int var;
-  int avg;
-
-  variance(src_ptr, source_stride, ref_ptr, recon_stride, 8, 16, &var, &avg);
-  *sse = var;
-  return var;
+  int sum;
+  variance(src, src_stride, ref, ref_stride, 8, 16, sse, &sum);
+  return *sse;
 }
 
-unsigned int vp9_mse8x8_c(const uint8_t *src_ptr,
-                          int  source_stride,
-                          const uint8_t *ref_ptr,
-                          int  recon_stride,
+unsigned int vp9_mse8x8_c(const uint8_t *src, int src_stride,
+                          const uint8_t *ref, int ref_stride,
                           unsigned int *sse) {
-  unsigned int var;
-  int avg;
-
-  variance(src_ptr, source_stride, ref_ptr, recon_stride, 8, 8, &var, &avg);
-  *sse = var;
-  return var;
+  int sum;
+  variance(src, src_stride, ref, ref_stride, 8, 8, sse, &sum);
+  return *sse;
 }
 
 VAR(4, 4)
-- 
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