ref: b38b6abccc4fa469b7cc3c22df2b92578a90fcea
dir: /vp9/encoder/variance_c.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 "variance.h"
#include "vp9/common/filter.h"
#include "vp9/common/subpelvar.h"
#include "vpx/vpx_integer.h"
unsigned int vp9_get_mb_ss_c(const short *src_ptr) {
unsigned int i, sum = 0;
for (i = 0; i < 256; i++) {
sum += (src_ptr[i] * src_ptr[i]);
}
return sum;
}
#if CONFIG_SUPERBLOCKS
unsigned int vp9_variance32x32_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *sse) {
unsigned int var;
int avg;
variance(src_ptr, source_stride, ref_ptr, recon_stride, 32, 32, &var, &avg);
*sse = var;
return (var - (((int64_t)avg * avg) >> 10));
}
#endif
unsigned int vp9_variance16x16_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_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 - (((unsigned int)avg * avg) >> 8));
}
unsigned int vp9_variance8x16_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_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 - (((unsigned int)avg * avg) >> 7));
}
unsigned int vp9_variance16x8_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_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 - (((unsigned int)avg * avg) >> 7));
}
unsigned int vp9_variance8x8_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_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 - (((unsigned int)avg * avg) >> 6));
}
unsigned int vp9_variance4x4_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *sse) {
unsigned int var;
int avg;
variance(src_ptr, source_stride, ref_ptr, recon_stride, 4, 4, &var, &avg);
*sse = var;
return (var - (((unsigned int)avg * avg) >> 4));
}
unsigned int vp9_mse16x16_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_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;
}
unsigned int vp9_sub_pixel_variance4x4_c(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) {
unsigned char temp2[20 * 16];
const short *HFilter, *VFilter;
unsigned short FData3[5 * 4]; // Temp data bufffer used in filtering
HFilter = vp9_bilinear_filters[xoffset];
VFilter = vp9_bilinear_filters[yoffset];
// First filter 1d Horizontal
var_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line, 1, 5, 4, HFilter);
// Now filter Verticaly
var_filter_block2d_bil_second_pass(FData3, temp2, 4, 4, 4, 4, VFilter);
return vp9_variance4x4_c(temp2, 4, dst_ptr, dst_pixels_per_line, sse);
}
unsigned int vp9_sub_pixel_variance8x8_c(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) {
unsigned short FData3[9 * 8]; // Temp data bufffer used in filtering
unsigned char temp2[20 * 16];
const short *HFilter, *VFilter;
HFilter = vp9_bilinear_filters[xoffset];
VFilter = vp9_bilinear_filters[yoffset];
var_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line, 1, 9, 8, HFilter);
var_filter_block2d_bil_second_pass(FData3, temp2, 8, 8, 8, 8, VFilter);
return vp9_variance8x8_c(temp2, 8, dst_ptr, dst_pixels_per_line, sse);
}
unsigned int vp9_sub_pixel_variance16x16_c(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) {
unsigned short FData3[17 * 16]; // Temp data bufffer used in filtering
unsigned char temp2[20 * 16];
const short *HFilter, *VFilter;
HFilter = vp9_bilinear_filters[xoffset];
VFilter = vp9_bilinear_filters[yoffset];
var_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line, 1, 17, 16, HFilter);
var_filter_block2d_bil_second_pass(FData3, temp2, 16, 16, 16, 16, VFilter);
return vp9_variance16x16_c(temp2, 16, dst_ptr, dst_pixels_per_line, sse);
}
#if CONFIG_SUPERBLOCKS
unsigned int vp9_sub_pixel_variance32x32_c(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) {
unsigned short FData3[33 * 32]; // Temp data bufffer used in filtering
unsigned char temp2[36 * 32];
const short *HFilter, *VFilter;
HFilter = vp9_bilinear_filters[xoffset];
VFilter = vp9_bilinear_filters[yoffset];
var_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line, 1, 33, 32, HFilter);
var_filter_block2d_bil_second_pass(FData3, temp2, 32, 32, 32, 32, VFilter);
return vp9_variance32x32_c(temp2, 32, dst_ptr, dst_pixels_per_line, sse);
}
#endif
unsigned int vp9_variance_halfpixvar16x16_h_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *sse) {
return vp9_sub_pixel_variance16x16_c(src_ptr, source_stride, 8, 0,
ref_ptr, recon_stride, sse);
}
#if CONFIG_SUPERBLOCKS
unsigned int vp9_variance_halfpixvar32x32_h_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *sse) {
return vp9_sub_pixel_variance32x32_c(src_ptr, source_stride, 8, 0,
ref_ptr, recon_stride, sse);
}
#endif
unsigned int vp9_variance_halfpixvar16x16_v_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *sse) {
return vp9_sub_pixel_variance16x16_c(src_ptr, source_stride, 0, 8,
ref_ptr, recon_stride, sse);
}
#if CONFIG_SUPERBLOCKS
unsigned int vp9_variance_halfpixvar32x32_v_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *sse) {
return vp9_sub_pixel_variance32x32_c(src_ptr, source_stride, 0, 8,
ref_ptr, recon_stride, sse);
}
#endif
unsigned int vp9_variance_halfpixvar16x16_hv_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *sse) {
return vp9_sub_pixel_variance16x16_c(src_ptr, source_stride, 8, 8,
ref_ptr, recon_stride, sse);
}
#if CONFIG_SUPERBLOCKS
unsigned int vp9_variance_halfpixvar32x32_hv_c(const unsigned char *src_ptr,
int source_stride,
const unsigned char *ref_ptr,
int recon_stride,
unsigned int *sse) {
return vp9_sub_pixel_variance32x32_c(src_ptr, source_stride, 8, 8,
ref_ptr, recon_stride, sse);
}
#endif
unsigned int vp9_sub_pixel_mse16x16_c(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) {
vp9_sub_pixel_variance16x16_c(src_ptr, src_pixels_per_line,
xoffset, yoffset, dst_ptr,
dst_pixels_per_line, sse);
return *sse;
}
#if CONFIG_SUPERBLOCKS
unsigned int vp9_sub_pixel_mse32x32_c(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) {
vp9_sub_pixel_variance32x32_c(src_ptr, src_pixels_per_line,
xoffset, yoffset, dst_ptr,
dst_pixels_per_line, sse);
return *sse;
}
#endif
unsigned int vp9_sub_pixel_variance16x8_c(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) {
unsigned short FData3[16 * 9]; // Temp data bufffer used in filtering
unsigned char temp2[20 * 16];
const short *HFilter, *VFilter;
HFilter = vp9_bilinear_filters[xoffset];
VFilter = vp9_bilinear_filters[yoffset];
var_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line, 1, 9, 16, HFilter);
var_filter_block2d_bil_second_pass(FData3, temp2, 16, 16, 8, 16, VFilter);
return vp9_variance16x8_c(temp2, 16, dst_ptr, dst_pixels_per_line, sse);
}
unsigned int vp9_sub_pixel_variance8x16_c(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) {
unsigned short FData3[9 * 16]; // Temp data bufffer used in filtering
unsigned char temp2[20 * 16];
const short *HFilter, *VFilter;
HFilter = vp9_bilinear_filters[xoffset];
VFilter = vp9_bilinear_filters[yoffset];
var_filter_block2d_bil_first_pass(src_ptr, FData3, src_pixels_per_line,
1, 17, 8, HFilter);
var_filter_block2d_bil_second_pass(FData3, temp2, 8, 8, 16, 8, VFilter);
return vp9_variance8x16_c(temp2, 8, dst_ptr, dst_pixels_per_line, sse);
}