ref: 8a79769aff63c41e2db42af7a0afeec289789dcb
dir: /vpx_dsp/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.
*/
#include "./vpx_dsp_rtcd.h"
#include "vpx_ports/mem.h"
DECLARE_ALIGNED(16, static const int16_t, bilinear_filters_mmx[8][8]) = {
{ 128, 128, 128, 128, 0, 0, 0, 0 },
{ 112, 112, 112, 112, 16, 16, 16, 16 },
{ 96, 96, 96, 96, 32, 32, 32, 32 },
{ 80, 80, 80, 80, 48, 48, 48, 48 },
{ 64, 64, 64, 64, 64, 64, 64, 64 },
{ 48, 48, 48, 48, 80, 80, 80, 80 },
{ 32, 32, 32, 32, 96, 96, 96, 96 },
{ 16, 16, 16, 16, 112, 112, 112, 112 }
};
extern void vpx_filter_block2d_bil4x4_var_mmx(const unsigned char *ref_ptr,
int ref_pixels_per_line,
const unsigned char *src_ptr,
int src_pixels_per_line,
const int16_t *HFilter,
const int16_t *VFilter,
int *sum,
unsigned int *sumsquared);
extern void vpx_filter_block2d_bil_var_mmx(const unsigned char *ref_ptr,
int ref_pixels_per_line,
const unsigned char *src_ptr,
int src_pixels_per_line,
unsigned int Height,
const int16_t *HFilter,
const int16_t *VFilter,
int *sum,
unsigned int *sumsquared);
uint32_t vpx_sub_pixel_variance4x4_mmx(const uint8_t *a, int a_stride,
int xoffset, int yoffset,
const uint8_t *b, int b_stride,
uint32_t *sse) {
int xsum;
unsigned int xxsum;
vpx_filter_block2d_bil4x4_var_mmx(a, a_stride, b, b_stride,
bilinear_filters_mmx[xoffset],
bilinear_filters_mmx[yoffset],
&xsum, &xxsum);
*sse = xxsum;
return (xxsum - (((unsigned int)xsum * xsum) >> 4));
}
uint32_t vpx_sub_pixel_variance8x8_mmx(const uint8_t *a, int a_stride,
int xoffset, int yoffset,
const uint8_t *b, int b_stride,
uint32_t *sse) {
int xsum;
uint32_t xxsum;
vpx_filter_block2d_bil_var_mmx(a, a_stride, b, b_stride, 8,
bilinear_filters_mmx[xoffset],
bilinear_filters_mmx[yoffset],
&xsum, &xxsum);
*sse = xxsum;
return (xxsum - (((uint32_t)xsum * xsum) >> 6));
}
uint32_t vpx_sub_pixel_variance16x16_mmx(const uint8_t *a, int a_stride,
int xoffset, int yoffset,
const uint8_t *b, int b_stride,
uint32_t *sse) {
int xsum0, xsum1;
unsigned int xxsum0, xxsum1;
vpx_filter_block2d_bil_var_mmx(a, a_stride, b, b_stride, 16,
bilinear_filters_mmx[xoffset],
bilinear_filters_mmx[yoffset],
&xsum0, &xxsum0);
vpx_filter_block2d_bil_var_mmx(a + 8, a_stride, b + 8, b_stride, 16,
bilinear_filters_mmx[xoffset],
bilinear_filters_mmx[yoffset],
&xsum1, &xxsum1);
xsum0 += xsum1;
xxsum0 += xxsum1;
*sse = xxsum0;
return (xxsum0 - (((uint32_t)xsum0 * xsum0) >> 8));
}
uint32_t vpx_sub_pixel_variance16x8_mmx(const uint8_t *a, int a_stride,
int xoffset, int yoffset,
const uint8_t *b, int b_stride,
uint32_t *sse) {
int xsum0, xsum1;
unsigned int xxsum0, xxsum1;
vpx_filter_block2d_bil_var_mmx(a, a_stride, b, b_stride, 8,
bilinear_filters_mmx[xoffset],
bilinear_filters_mmx[yoffset],
&xsum0, &xxsum0);
vpx_filter_block2d_bil_var_mmx(a + 8, a_stride, b + 8, b_stride, 8,
bilinear_filters_mmx[xoffset],
bilinear_filters_mmx[yoffset],
&xsum1, &xxsum1);
xsum0 += xsum1;
xxsum0 += xxsum1;
*sse = xxsum0;
return (xxsum0 - (((uint32_t)xsum0 * xsum0) >> 7));
}
uint32_t vpx_sub_pixel_variance8x16_mmx(const uint8_t *a, int a_stride,
int xoffset, int yoffset,
const uint8_t *b, int b_stride,
uint32_t *sse) {
int xsum;
unsigned int xxsum;
vpx_filter_block2d_bil_var_mmx(a, a_stride, b, b_stride, 16,
bilinear_filters_mmx[xoffset],
bilinear_filters_mmx[yoffset],
&xsum, &xxsum);
*sse = xxsum;
return (xxsum - (((uint32_t)xsum * xsum) >> 7));
}
uint32_t vpx_variance_halfpixvar16x16_h_mmx(const uint8_t *a, int a_stride,
const uint8_t *b, int b_stride,
uint32_t *sse) {
return vpx_sub_pixel_variance16x16_mmx(a, a_stride, 4, 0, b, b_stride, sse);
}
uint32_t vpx_variance_halfpixvar16x16_v_mmx(const uint8_t *a, int a_stride,
const uint8_t *b, int b_stride,
uint32_t *sse) {
return vpx_sub_pixel_variance16x16_mmx(a, a_stride, 0, 4, b, b_stride, sse);
}
uint32_t vpx_variance_halfpixvar16x16_hv_mmx(const uint8_t *a, int a_stride,
const uint8_t *b, int b_stride,
uint32_t *sse) {
return vpx_sub_pixel_variance16x16_mmx(a, a_stride, 4, 4, b, b_stride, sse);
}