Remove halfpix specialization

This function only exists as a shortcut to subpixel variance with
predefined offsets. xoffset = 4 for horizontal, yoffset = 4 for vertical
and both for "hv"

Removing this allows the existing optimizations for the variance
functions to be called. Instead of having only sse2 optimizations, this
gives sse2, ssse3, msa and neon.

BUG=webm:1273

Change-Id: Ieb407b423b91b87d33c4263c6a1ad5e673b0efd6

1 files changed, 0 insertions, 76 deletions

diff --git a/vpx_dsp/x86/halfpix_variance_sse2.c b/vpx_dsp/x86/halfpix_variance_sse2.c
deleted file mode 100644
index b5c3f5fa2..000000000
--- a/vpx_dsp/x86/halfpix_variance_sse2.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- *  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.
- */
-
-#include <assert.h>
-
-#include "./vpx_config.h"
-#include "./vpx_dsp_rtcd.h"
-#include "vpx/vpx_integer.h"
-
-void vpx_half_horiz_vert_variance16x_h_sse2(const unsigned char *ref,
-                                            int ref_stride,
-                                            const unsigned char *src,
-                                            int src_stride, unsigned int height,
-                                            int *sum, unsigned int *sumsquared);
-void vpx_half_horiz_variance16x_h_sse2(const unsigned char *ref, int ref_stride,
-                                       const unsigned char *src, int src_stride,
-                                       unsigned int height, int *sum,
-                                       unsigned int *sumsquared);
-void vpx_half_vert_variance16x_h_sse2(const unsigned char *ref, int ref_stride,
-                                      const unsigned char *src, int src_stride,
-                                      unsigned int height, int *sum,
-                                      unsigned int *sumsquared);
-
-uint32_t vpx_variance_halfpixvar16x16_h_sse2(const unsigned char *src,
-                                             int src_stride,
-                                             const unsigned char *dst,
-                                             int dst_stride, uint32_t *sse) {
-  int xsum0;
-  unsigned int xxsum0;
-
-  vpx_half_horiz_variance16x_h_sse2(src, src_stride, dst, dst_stride, 16,
-                                    &xsum0, &xxsum0);
-
-  *sse = xxsum0;
-  assert(xsum0 <= 255 * 16 * 16);
-  assert(xsum0 >= -255 * 16 * 16);
-  return (xxsum0 - ((uint32_t)((int64_t)xsum0 * xsum0) >> 8));
-}
-
-uint32_t vpx_variance_halfpixvar16x16_v_sse2(const unsigned char *src,
-                                             int src_stride,
-                                             const unsigned char *dst,
-                                             int dst_stride, uint32_t *sse) {
-  int xsum0;
-  unsigned int xxsum0;
-  vpx_half_vert_variance16x_h_sse2(src, src_stride, dst, dst_stride, 16, &xsum0,
-                                   &xxsum0);
-
-  *sse = xxsum0;
-  assert(xsum0 <= 255 * 16 * 16);
-  assert(xsum0 >= -255 * 16 * 16);
-  return (xxsum0 - ((uint32_t)((int64_t)xsum0 * xsum0) >> 8));
-}
-
-uint32_t vpx_variance_halfpixvar16x16_hv_sse2(const unsigned char *src,
-                                              int src_stride,
-                                              const unsigned char *dst,
-                                              int dst_stride, uint32_t *sse) {
-  int xsum0;
-  unsigned int xxsum0;
-
-  vpx_half_horiz_vert_variance16x_h_sse2(src, src_stride, dst, dst_stride, 16,
-                                         &xsum0, &xxsum0);
-
-  *sse = xxsum0;
-  assert(xsum0 <= 255 * 16 * 16);
-  assert(xsum0 >= -255 * 16 * 16);
-  return (xxsum0 - ((uint32_t)((int64_t)xsum0 * xsum0) >> 8));
-}