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vpx/vp9/encoder/vp9_variance.c
Johann eb88b172fe Make vp9 subpixel match vp8 
The only difference between the two was that the vp9 function allowed
for every step in the bilinear filter (16 steps) while vp8 only allowed
for half of those. Since all the call sites in vp9 (<< 1) the input, it
only ever used the same steps as vp8.

This will allow moving the subpel variance to vpx_dsp with the rest of
the variance functions.

Change-Id: I6fa2509350a2dc610c46b3e15bde98a15a084b75
2015-06-03 22:10:51 -07:00

381 lines
12 KiB
C
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/*
* 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 "./vp9_rtcd.h"
#include "./vpx_dsp_rtcd.h"
#include "vpx_ports/mem.h"
#include "vpx/vpx_integer.h"
#include "vp9/common/vp9_common.h"
#include "vp9/common/vp9_filter.h"
#include "vp9/encoder/vp9_variance.h"
static uint8_t bilinear_filters[8][2] = {
{ 128, 0, },
{ 112, 16, },
{ 96, 32, },
{ 80, 48, },
{ 64, 64, },
{ 48, 80, },
{ 32, 96, },
{ 16, 112, },
};
// Applies a 1-D 2-tap bi-linear filter to the source block in either horizontal
// or vertical direction to produce the filtered output block. Used to implement
// first-pass of 2-D separable filter.
//
// Produces int32_t output to retain precision for next pass. Two filter taps
// should sum to VP9_FILTER_WEIGHT. pixel_step defines whether the filter is
// applied horizontally (pixel_step=1) or vertically (pixel_step=stride). It
// defines the offset required to move from one input to the next.
static void var_filter_block2d_bil_first_pass(const uint8_t *src_ptr,
uint16_t *output_ptr,
unsigned int src_pixels_per_line,
int pixel_step,
unsigned int output_height,
unsigned int output_width,
const uint8_t *vp9_filter) {
unsigned int i, j;
for (i = 0; i < output_height; i++) {
for (j = 0; j < output_width; j++) {
output_ptr[j] = ROUND_POWER_OF_TWO((int)src_ptr[0] * vp9_filter[0] +
(int)src_ptr[pixel_step] * vp9_filter[1],
FILTER_BITS);
src_ptr++;
}
// Next row...
src_ptr += src_pixels_per_line - output_width;
output_ptr += output_width;
}
}
// Applies a 1-D 2-tap bi-linear filter to the source block in either horizontal
// or vertical direction to produce the filtered output block. Used to implement
// second-pass of 2-D separable filter.
//
// Requires 32-bit input as produced by filter_block2d_bil_first_pass. Two
// filter taps should sum to VP9_FILTER_WEIGHT. pixel_step defines whether the
// filter is applied horizontally (pixel_step=1) or vertically (pixel_step=
// stride). It defines the offset required to move from one input to the next.
static void var_filter_block2d_bil_second_pass(const uint16_t *src_ptr,
uint8_t *output_ptr,
unsigned int src_pixels_per_line,
unsigned int pixel_step,
unsigned int output_height,
unsigned int output_width,
const uint8_t *vp9_filter) {
unsigned int i, j;
for (i = 0; i < output_height; i++) {
for (j = 0; j < output_width; j++) {
output_ptr[j] = ROUND_POWER_OF_TWO((int)src_ptr[0] * vp9_filter[0] +
(int)src_ptr[pixel_step] * vp9_filter[1],
FILTER_BITS);
src_ptr++;
}
src_ptr += src_pixels_per_line - output_width;
output_ptr += output_width;
}
}
#define SUBPIX_VAR(W, H) \
unsigned int vp9_sub_pixel_variance##W##x##H##_c( \
const uint8_t *src, int src_stride, \
int xoffset, int yoffset, \
const uint8_t *dst, int dst_stride, \
unsigned int *sse) { \
uint16_t fdata3[(H + 1) * W]; \
uint8_t temp2[H * W]; \
\
var_filter_block2d_bil_first_pass(src, fdata3, src_stride, 1, H + 1, W, \
bilinear_filters[xoffset]); \
var_filter_block2d_bil_second_pass(fdata3, temp2, W, W, H, W, \
bilinear_filters[yoffset]); \
\
return vpx_variance##W##x##H##_c(temp2, W, dst, dst_stride, sse); \
}
#define SUBPIX_AVG_VAR(W, H) \
unsigned int vp9_sub_pixel_avg_variance##W##x##H##_c( \
const uint8_t *src, int src_stride, \
int xoffset, int yoffset, \
const uint8_t *dst, int dst_stride, \
unsigned int *sse, \
const uint8_t *second_pred) { \
uint16_t fdata3[(H + 1) * W]; \
uint8_t temp2[H * W]; \
DECLARE_ALIGNED(16, uint8_t, temp3[H * W]); \
\
var_filter_block2d_bil_first_pass(src, fdata3, src_stride, 1, H + 1, W, \
bilinear_filters[xoffset]); \
var_filter_block2d_bil_second_pass(fdata3, temp2, W, W, H, W, \
bilinear_filters[yoffset]); \
\
vpx_comp_avg_pred(temp3, second_pred, W, H, temp2, W); \
\
return vpx_variance##W##x##H##_c(temp3, W, dst, dst_stride, sse); \
}
SUBPIX_VAR(4, 4)
SUBPIX_AVG_VAR(4, 4)
SUBPIX_VAR(4, 8)
SUBPIX_AVG_VAR(4, 8)
SUBPIX_VAR(8, 4)
SUBPIX_AVG_VAR(8, 4)
SUBPIX_VAR(8, 8)
SUBPIX_AVG_VAR(8, 8)
SUBPIX_VAR(8, 16)
SUBPIX_AVG_VAR(8, 16)
SUBPIX_VAR(16, 8)
SUBPIX_AVG_VAR(16, 8)
SUBPIX_VAR(16, 16)
SUBPIX_AVG_VAR(16, 16)
SUBPIX_VAR(16, 32)
SUBPIX_AVG_VAR(16, 32)
SUBPIX_VAR(32, 16)
SUBPIX_AVG_VAR(32, 16)
SUBPIX_VAR(32, 32)
SUBPIX_AVG_VAR(32, 32)
SUBPIX_VAR(32, 64)
SUBPIX_AVG_VAR(32, 64)
SUBPIX_VAR(64, 32)
SUBPIX_AVG_VAR(64, 32)
SUBPIX_VAR(64, 64)
SUBPIX_AVG_VAR(64, 64)
#if CONFIG_VP9_HIGHBITDEPTH
static void highbd_var_filter_block2d_bil_first_pass(
const uint8_t *src_ptr8,
uint16_t *output_ptr,
unsigned int src_pixels_per_line,
int pixel_step,
unsigned int output_height,
unsigned int output_width,
const uint8_t *vp9_filter) {
unsigned int i, j;
uint16_t *src_ptr = CONVERT_TO_SHORTPTR(src_ptr8);
for (i = 0; i < output_height; i++) {
for (j = 0; j < output_width; j++) {
output_ptr[j] =
ROUND_POWER_OF_TWO((int)src_ptr[0] * vp9_filter[0] +
(int)src_ptr[pixel_step] * vp9_filter[1],
FILTER_BITS);
src_ptr++;
}
// Next row...
src_ptr += src_pixels_per_line - output_width;
output_ptr += output_width;
}
}
static void highbd_var_filter_block2d_bil_second_pass(
const uint16_t *src_ptr,
uint16_t *output_ptr,
unsigned int src_pixels_per_line,
unsigned int pixel_step,
unsigned int output_height,
unsigned int output_width,
const uint8_t *vp9_filter) {
unsigned int i, j;
for (i = 0; i < output_height; i++) {
for (j = 0; j < output_width; j++) {
output_ptr[j] =
ROUND_POWER_OF_TWO((int)src_ptr[0] * vp9_filter[0] +
(int)src_ptr[pixel_step] * vp9_filter[1],
FILTER_BITS);
src_ptr++;
}
src_ptr += src_pixels_per_line - output_width;
output_ptr += output_width;
}
}
#define HIGHBD_SUBPIX_VAR(W, H) \
unsigned int vp9_highbd_sub_pixel_variance##W##x##H##_c( \
const uint8_t *src, int src_stride, \
int xoffset, int yoffset, \
const uint8_t *dst, int dst_stride, \
unsigned int *sse) { \
uint16_t fdata3[(H + 1) * W]; \
uint16_t temp2[H * W]; \
\
highbd_var_filter_block2d_bil_first_pass(src, fdata3, src_stride, 1, H + 1, \
W, bilinear_filters[xoffset]); \
highbd_var_filter_block2d_bil_second_pass(fdata3, temp2, W, W, H, W, \
bilinear_filters[yoffset]); \
\
return vpx_highbd_8_variance##W##x##H##_c(CONVERT_TO_BYTEPTR(temp2), W, dst, \
dst_stride, sse); \
} \
\
unsigned int vp9_highbd_10_sub_pixel_variance##W##x##H##_c( \
const uint8_t *src, int src_stride, \
int xoffset, int yoffset, \
const uint8_t *dst, int dst_stride, \
unsigned int *sse) { \
uint16_t fdata3[(H + 1) * W]; \
uint16_t temp2[H * W]; \
\
highbd_var_filter_block2d_bil_first_pass(src, fdata3, src_stride, 1, H + 1, \
W, bilinear_filters[xoffset]); \
highbd_var_filter_block2d_bil_second_pass(fdata3, temp2, W, W, H, W, \
bilinear_filters[yoffset]); \
\
return vpx_highbd_10_variance##W##x##H##_c(CONVERT_TO_BYTEPTR(temp2), \
W, dst, dst_stride, sse); \
} \
\
unsigned int vp9_highbd_12_sub_pixel_variance##W##x##H##_c( \
const uint8_t *src, int src_stride, \
int xoffset, int yoffset, \
const uint8_t *dst, int dst_stride, \
unsigned int *sse) { \
uint16_t fdata3[(H + 1) * W]; \
uint16_t temp2[H * W]; \
\
highbd_var_filter_block2d_bil_first_pass(src, fdata3, src_stride, 1, H + 1, \
W, bilinear_filters[xoffset]); \
highbd_var_filter_block2d_bil_second_pass(fdata3, temp2, W, W, H, W, \
bilinear_filters[yoffset]); \
\
return vpx_highbd_12_variance##W##x##H##_c(CONVERT_TO_BYTEPTR(temp2), \
W, dst, dst_stride, sse); \
}
#define HIGHBD_SUBPIX_AVG_VAR(W, H) \
unsigned int vp9_highbd_sub_pixel_avg_variance##W##x##H##_c( \
const uint8_t *src, int src_stride, \
int xoffset, int yoffset, \
const uint8_t *dst, int dst_stride, \
unsigned int *sse, \
const uint8_t *second_pred) { \
uint16_t fdata3[(H + 1) * W]; \
uint16_t temp2[H * W]; \
DECLARE_ALIGNED(16, uint16_t, temp3[H * W]); \
\
highbd_var_filter_block2d_bil_first_pass(src, fdata3, src_stride, 1, H + 1, \
W, bilinear_filters[xoffset]); \
highbd_var_filter_block2d_bil_second_pass(fdata3, temp2, W, W, H, W, \
bilinear_filters[yoffset]); \
\
vpx_highbd_comp_avg_pred(temp3, second_pred, W, H, \
CONVERT_TO_BYTEPTR(temp2), W); \
\
return vpx_highbd_8_variance##W##x##H##_c(CONVERT_TO_BYTEPTR(temp3), W, dst, \
dst_stride, sse); \
} \
\
unsigned int vp9_highbd_10_sub_pixel_avg_variance##W##x##H##_c( \
const uint8_t *src, int src_stride, \
int xoffset, int yoffset, \
const uint8_t *dst, int dst_stride, \
unsigned int *sse, \
const uint8_t *second_pred) { \
uint16_t fdata3[(H + 1) * W]; \
uint16_t temp2[H * W]; \
DECLARE_ALIGNED(16, uint16_t, temp3[H * W]); \
\
highbd_var_filter_block2d_bil_first_pass(src, fdata3, src_stride, 1, H + 1, \
W, bilinear_filters[xoffset]); \
highbd_var_filter_block2d_bil_second_pass(fdata3, temp2, W, W, H, W, \
bilinear_filters[yoffset]); \
\
vpx_highbd_comp_avg_pred(temp3, second_pred, W, H, \
CONVERT_TO_BYTEPTR(temp2), W); \
\
return vpx_highbd_10_variance##W##x##H##_c(CONVERT_TO_BYTEPTR(temp3), \
W, dst, dst_stride, sse); \
} \
\
unsigned int vp9_highbd_12_sub_pixel_avg_variance##W##x##H##_c( \
const uint8_t *src, int src_stride, \
int xoffset, int yoffset, \
const uint8_t *dst, int dst_stride, \
unsigned int *sse, \
const uint8_t *second_pred) { \
uint16_t fdata3[(H + 1) * W]; \
uint16_t temp2[H * W]; \
DECLARE_ALIGNED(16, uint16_t, temp3[H * W]); \
\
highbd_var_filter_block2d_bil_first_pass(src, fdata3, src_stride, 1, H + 1, \
W, bilinear_filters[xoffset]); \
highbd_var_filter_block2d_bil_second_pass(fdata3, temp2, W, W, H, W, \
bilinear_filters[yoffset]); \
\
vpx_highbd_comp_avg_pred(temp3, second_pred, W, H, \
CONVERT_TO_BYTEPTR(temp2), W); \
\
return vpx_highbd_12_variance##W##x##H##_c(CONVERT_TO_BYTEPTR(temp3), \
W, dst, dst_stride, sse); \
}
HIGHBD_SUBPIX_VAR(4, 4)
HIGHBD_SUBPIX_AVG_VAR(4, 4)
HIGHBD_SUBPIX_VAR(4, 8)
HIGHBD_SUBPIX_AVG_VAR(4, 8)
HIGHBD_SUBPIX_VAR(8, 4)
HIGHBD_SUBPIX_AVG_VAR(8, 4)
HIGHBD_SUBPIX_VAR(8, 8)
HIGHBD_SUBPIX_AVG_VAR(8, 8)
HIGHBD_SUBPIX_VAR(8, 16)
HIGHBD_SUBPIX_AVG_VAR(8, 16)
HIGHBD_SUBPIX_VAR(16, 8)
HIGHBD_SUBPIX_AVG_VAR(16, 8)
HIGHBD_SUBPIX_VAR(16, 16)
HIGHBD_SUBPIX_AVG_VAR(16, 16)
HIGHBD_SUBPIX_VAR(16, 32)
HIGHBD_SUBPIX_AVG_VAR(16, 32)
HIGHBD_SUBPIX_VAR(32, 16)
HIGHBD_SUBPIX_AVG_VAR(32, 16)
HIGHBD_SUBPIX_VAR(32, 32)
HIGHBD_SUBPIX_AVG_VAR(32, 32)
HIGHBD_SUBPIX_VAR(32, 64)
HIGHBD_SUBPIX_AVG_VAR(32, 64)
HIGHBD_SUBPIX_VAR(64, 32)
HIGHBD_SUBPIX_AVG_VAR(64, 32)
HIGHBD_SUBPIX_VAR(64, 64)
HIGHBD_SUBPIX_AVG_VAR(64, 64)
#endif // CONFIG_VP9_HIGHBITDEPTH
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