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23144d2345
vpx/vp9/common/vp9_convolve.c
Deb Mukherjee 23144d2345 Implicit weighted prediction experiment 
Adds an experiment to use a weighted prediction of two INTER
predictors, where the weight is one of (1/4, 3/4), (3/8, 5/8),
(1/2, 1/2), (5/8, 3/8) or (3/4, 1/4), and is chosen implicitly
based on consistency of the predictors to the already
reconstructed pixels to the top and left of the current macroblock
or superblock.

Currently the weighting is not applied to SPLITMV modes, which
default to the usual (1/2, 1/2) weighting. However the code is in
place controlled by a macro. The same weighting is used for Y and
UV components, where the weight is derived from analyzing the Y
component only.

Results (over compound inter-intra experiment)
derf: +0.18%
yt: +0.34%
hd: +0.49%
stdhd: +0.23%

The experiment suggests bigger benefit for explicitly signaled weights.

Change-Id: I5438539ff4485c5752874cd1eb078ff14bf5235a
2013-03-26 16:58:56 -07:00

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/*
* Copyright (c) 2013 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/common/vp9_convolve.h"
#include <assert.h>
#include "./vpx_config.h"
#include "./vp9_rtcd.h"
#include "vp9/common/vp9_common.h"
#include "vpx/vpx_integer.h"
#include "vpx_ports/mem.h"
#define VP9_FILTER_WEIGHT 128
#define VP9_FILTER_SHIFT 7
/* Assume a bank of 16 filters to choose from. There are two implementations
* for filter wrapping behavior, since we want to be able to pick which filter
* to start with. We could either:
*
* 1) make filter_ a pointer to the base of the filter array, and then add an
* additional offset parameter, to choose the starting filter.
* 2) use a pointer to 2 periods worth of filters, so that even if the original
* phase offset is at 15/16, we'll have valid data to read. The filter
* tables become [32][8], and the second half is duplicated.
* 3) fix the alignment of the filter tables, so that we know the 0/16 is
* always 256 byte aligned.
*
* Implementations 2 and 3 are likely preferable, as they avoid an extra 2
* parameters, and switching between them is trivial, with the
* ALIGN_FILTERS_256 macro, below.
*/
#define ALIGN_FILTERS_256 1
static void convolve_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x0, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h, int taps) {
int x, y, k, sum;
const int16_t *filter_x_base = filter_x0;
#if ALIGN_FILTERS_256
filter_x_base = (const int16_t *)(((intptr_t)filter_x0) & ~(intptr_t)0xff);
#endif
/* Adjust base pointer address for this source line */
src -= taps / 2 - 1;
for (y = 0; y < h; ++y) {
/* Pointer to filter to use */
const int16_t *filter_x = filter_x0;
/* Initial phase offset */
int x0_q4 = (filter_x - filter_x_base) / taps;
int x_q4 = x0_q4;
for (x = 0; x < w; ++x) {
/* Per-pixel src offset */
int src_x = (x_q4 - x0_q4) >> 4;
for (sum = 0, k = 0; k < taps; ++k) {
sum += src[src_x + k] * filter_x[k];
}
sum += (VP9_FILTER_WEIGHT >> 1);
dst[x] = clip_pixel(sum >> VP9_FILTER_SHIFT);
/* Adjust source and filter to use for the next pixel */
x_q4 += x_step_q4;
filter_x = filter_x_base + (x_q4 & 0xf) * taps;
}
src += src_stride;
dst += dst_stride;
}
}
static void convolve_avg_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x0, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h, int taps) {
int x, y, k, sum;
const int16_t *filter_x_base = filter_x0;
#if ALIGN_FILTERS_256
filter_x_base = (const int16_t *)(((intptr_t)filter_x0) & ~(intptr_t)0xff);
#endif
/* Adjust base pointer address for this source line */
src -= taps / 2 - 1;
for (y = 0; y < h; ++y) {
/* Pointer to filter to use */
const int16_t *filter_x = filter_x0;
/* Initial phase offset */
int x0_q4 = (filter_x - filter_x_base) / taps;
int x_q4 = x0_q4;
for (x = 0; x < w; ++x) {
/* Per-pixel src offset */
int src_x = (x_q4 - x0_q4) >> 4;
for (sum = 0, k = 0; k < taps; ++k) {
sum += src[src_x + k] * filter_x[k];
}
sum += (VP9_FILTER_WEIGHT >> 1);
dst[x] = (dst[x] + clip_pixel(sum >> VP9_FILTER_SHIFT) + 1) >> 1;
/* Adjust source and filter to use for the next pixel */
x_q4 += x_step_q4;
filter_x = filter_x_base + (x_q4 & 0xf) * taps;
}
src += src_stride;
dst += dst_stride;
}
}
#if CONFIG_IMPLICIT_COMPOUNDINTER_WEIGHT
static inline uint8_t combine_qtr(uint8_t a, uint8_t b) {
return (((a) + (b) * 3 + 2) >> 2);
}
static inline uint8_t combine_3qtr(uint8_t a, uint8_t b) {
return (((a) * 3 + (b) + 2) >> 2);
}
static inline uint8_t combine_1by8(uint8_t a, uint8_t b) {
return (((a) * 1 + (b) * 7 + 4) >> 3);
}
static inline uint8_t combine_3by8(uint8_t a, uint8_t b) {
return (((a) * 3 + (b) * 5 + 4) >> 3);
}
static inline uint8_t combine_5by8(uint8_t a, uint8_t b) {
return (((a) * 5 + (b) * 3 + 4) >> 3);
}
static inline uint8_t combine_7by8(uint8_t a, uint8_t b) {
return (((a) * 7 + (b) * 1 + 4) >> 3);
}
// TODO(debargha): Implment with a separate weight parameter
static void convolve_wtd_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x0, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h, int taps,
uint8_t (*combine)(uint8_t a, uint8_t b)) {
int x, y, k, sum;
const int16_t *filter_x_base = filter_x0;
#if ALIGN_FILTERS_256
filter_x_base = (const int16_t *)(((intptr_t)filter_x0) & ~(intptr_t)0xff);
#endif
/* Adjust base pointer address for this source line */
src -= taps / 2 - 1;
for (y = 0; y < h; ++y) {
/* Pointer to filter to use */
const int16_t *filter_x = filter_x0;
/* Initial phase offset */
int x0_q4 = (filter_x - filter_x_base) / taps;
int x_q4 = x0_q4;
for (x = 0; x < w; ++x) {
/* Per-pixel src offset */
int src_x = (x_q4 - x0_q4) >> 4;
for (sum = 0, k = 0; k < taps; ++k) {
sum += src[src_x + k] * filter_x[k];
}
sum += (VP9_FILTER_WEIGHT >> 1);
dst[x] = combine(dst[x], clip_pixel(sum >> VP9_FILTER_SHIFT));
/* Adjust source and filter to use for the next pixel */
x_q4 += x_step_q4;
filter_x = filter_x_base + (x_q4 & 0xf) * taps;
}
src += src_stride;
dst += dst_stride;
}
}
#endif
static void convolve_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y0, int y_step_q4,
int w, int h, int taps) {
int x, y, k, sum;
const int16_t *filter_y_base = filter_y0;
#if ALIGN_FILTERS_256
filter_y_base = (const int16_t *)(((intptr_t)filter_y0) & ~(intptr_t)0xff);
#endif
/* Adjust base pointer address for this source column */
src -= src_stride * (taps / 2 - 1);
for (x = 0; x < w; ++x) {
/* Pointer to filter to use */
const int16_t *filter_y = filter_y0;
/* Initial phase offset */
int y0_q4 = (filter_y - filter_y_base) / taps;
int y_q4 = y0_q4;
for (y = 0; y < h; ++y) {
/* Per-pixel src offset */
int src_y = (y_q4 - y0_q4) >> 4;
for (sum = 0, k = 0; k < taps; ++k) {
sum += src[(src_y + k) * src_stride] * filter_y[k];
}
sum += (VP9_FILTER_WEIGHT >> 1);
dst[y * dst_stride] = clip_pixel(sum >> VP9_FILTER_SHIFT);
/* Adjust source and filter to use for the next pixel */
y_q4 += y_step_q4;
filter_y = filter_y_base + (y_q4 & 0xf) * taps;
}
++src;
++dst;
}
}
static void convolve_avg_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y0, int y_step_q4,
int w, int h, int taps) {
int x, y, k, sum;
const int16_t *filter_y_base = filter_y0;
#if ALIGN_FILTERS_256
filter_y_base = (const int16_t *)(((intptr_t)filter_y0) & ~(intptr_t)0xff);
#endif
/* Adjust base pointer address for this source column */
src -= src_stride * (taps / 2 - 1);
for (x = 0; x < w; ++x) {
/* Pointer to filter to use */
const int16_t *filter_y = filter_y0;
/* Initial phase offset */
int y0_q4 = (filter_y - filter_y_base) / taps;
int y_q4 = y0_q4;
for (y = 0; y < h; ++y) {
/* Per-pixel src offset */
int src_y = (y_q4 - y0_q4) >> 4;
for (sum = 0, k = 0; k < taps; ++k) {
sum += src[(src_y + k) * src_stride] * filter_y[k];
}
sum += (VP9_FILTER_WEIGHT >> 1);
dst[y * dst_stride] =
(dst[y * dst_stride] + clip_pixel(sum >> VP9_FILTER_SHIFT) + 1) >> 1;
/* Adjust source and filter to use for the next pixel */
y_q4 += y_step_q4;
filter_y = filter_y_base + (y_q4 & 0xf) * taps;
}
++src;
++dst;
}
}
#if CONFIG_IMPLICIT_COMPOUNDINTER_WEIGHT
static void convolve_wtd_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y0, int y_step_q4,
int w, int h, int taps,
uint8_t (*combine)(uint8_t a, uint8_t b)) {
int x, y, k, sum;
const int16_t *filter_y_base = filter_y0;
#if ALIGN_FILTERS_256
filter_y_base = (const int16_t *)(((intptr_t)filter_y0) & ~(intptr_t)0xff);
#endif
/* Adjust base pointer address for this source column */
src -= src_stride * (taps / 2 - 1);
for (x = 0; x < w; ++x) {
/* Pointer to filter to use */
const int16_t *filter_y = filter_y0;
/* Initial phase offset */
int y0_q4 = (filter_y - filter_y_base) / taps;
int y_q4 = y0_q4;
for (y = 0; y < h; ++y) {
/* Per-pixel src offset */
int src_y = (y_q4 - y0_q4) >> 4;
for (sum = 0, k = 0; k < taps; ++k) {
sum += src[(src_y + k) * src_stride] * filter_y[k];
}
sum += (VP9_FILTER_WEIGHT >> 1);
dst[y * dst_stride] = combine(dst[y * dst_stride],
clip_pixel(sum >> VP9_FILTER_SHIFT));
/* Adjust source and filter to use for the next pixel */
y_q4 += y_step_q4;
filter_y = filter_y_base + (y_q4 & 0xf) * taps;
}
++src;
++dst;
}
}
#endif
static void convolve_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h, int taps) {
/* Fixed size intermediate buffer places limits on parameters.
* Maximum intermediate_height is 39, for y_step_q4 == 32,
* h == 16, taps == 8.
*/
uint8_t temp[16 * 39];
int intermediate_height = ((h * y_step_q4) >> 4) + taps - 1;
assert(w <= 16);
assert(h <= 16);
assert(taps <= 8);
assert(y_step_q4 <= 32);
if (intermediate_height < h)
intermediate_height = h;
convolve_horiz_c(src - src_stride * (taps / 2 - 1), src_stride,
temp, 16,
filter_x, x_step_q4, filter_y, y_step_q4,
w, intermediate_height, taps);
convolve_vert_c(temp + 16 * (taps / 2 - 1), 16, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, taps);
}
static void convolve_avg_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h, int taps) {
/* Fixed size intermediate buffer places limits on parameters.
* Maximum intermediate_height is 39, for y_step_q4 == 32,
* h == 16, taps == 8.
*/
uint8_t temp[16 * 39];
int intermediate_height = ((h * y_step_q4) >> 4) + taps - 1;
assert(w <= 16);
assert(h <= 16);
assert(taps <= 8);
assert(y_step_q4 <= 32);
if (intermediate_height < h)
intermediate_height = h;
convolve_horiz_c(src - src_stride * (taps / 2 - 1), src_stride,
temp, 16,
filter_x, x_step_q4, filter_y, y_step_q4,
w, intermediate_height, taps);
convolve_avg_vert_c(temp + 16 * (taps / 2 - 1), 16, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, taps);
}
void vp9_convolve8_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_horiz_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8);
}
void vp9_convolve8_avg_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_avg_horiz_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8);
}
#if CONFIG_IMPLICIT_COMPOUNDINTER_WEIGHT
void vp9_convolve8_1by8_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_horiz_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_1by8);
}
void vp9_convolve8_qtr_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_horiz_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_qtr);
}
void vp9_convolve8_3by8_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_horiz_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_3by8);
}
void vp9_convolve8_5by8_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_horiz_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_5by8);
}
void vp9_convolve8_3qtr_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_horiz_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_3qtr);
}
void vp9_convolve8_7by8_horiz_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_horiz_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_7by8);
}
#endif
void vp9_convolve8_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_vert_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8);
}
void vp9_convolve8_avg_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_avg_vert_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8);
}
#if CONFIG_IMPLICIT_COMPOUNDINTER_WEIGHT
void vp9_convolve8_1by8_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_vert_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_1by8);
}
void vp9_convolve8_qtr_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_vert_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_qtr);
}
void vp9_convolve8_3by8_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_vert_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_3by8);
}
void vp9_convolve8_5by8_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_vert_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_5by8);
}
void vp9_convolve8_3qtr_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_vert_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_3qtr);
}
void vp9_convolve8_7by8_vert_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_wtd_vert_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8, combine_7by8);
}
#endif
void vp9_convolve8_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
convolve_c(src, src_stride, dst, dst_stride,
filter_x, x_step_q4, filter_y, y_step_q4,
w, h, 8);
}
void vp9_convolve8_avg_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
/* Fixed size intermediate buffer places limits on parameters. */
DECLARE_ALIGNED_ARRAY(16, uint8_t, temp, 16 * 16);
assert(w <= 16);
assert(h <= 16);
vp9_convolve8(src, src_stride,
temp, 16,
filter_x, x_step_q4,
filter_y, y_step_q4,
w, h);
vp9_convolve_avg(temp, 16,
dst, dst_stride,
NULL, 0, /* These unused parameter should be removed! */
NULL, 0, /* These unused parameter should be removed! */
w, h);
}
#if CONFIG_IMPLICIT_COMPOUNDINTER_WEIGHT
void vp9_convolve8_1by8_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
/* Fixed size intermediate buffer places limits on parameters. */
DECLARE_ALIGNED_ARRAY(16, uint8_t, temp, 16 * 16);
assert(w <= 16);
assert(h <= 16);
vp9_convolve8(src, src_stride,
temp, 16,
filter_x, x_step_q4,
filter_y, y_step_q4,
w, h);
vp9_convolve_1by8(temp, 16,
dst, dst_stride,
NULL, 0, /* These unused parameter should be removed! */
NULL, 0, /* These unused parameter should be removed! */
w, h);
}
void vp9_convolve8_qtr_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
/* Fixed size intermediate buffer places limits on parameters. */
DECLARE_ALIGNED_ARRAY(16, uint8_t, temp, 16 * 16);
assert(w <= 16);
assert(h <= 16);
vp9_convolve8(src, src_stride,
temp, 16,
filter_x, x_step_q4,
filter_y, y_step_q4,
w, h);
vp9_convolve_qtr(temp, 16,
dst, dst_stride,
NULL, 0, /* These unused parameter should be removed! */
NULL, 0, /* These unused parameter should be removed! */
w, h);
}
void vp9_convolve8_3by8_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
/* Fixed size intermediate buffer places limits on parameters. */
DECLARE_ALIGNED_ARRAY(16, uint8_t, temp, 16 * 16);
assert(w <= 16);
assert(h <= 16);
vp9_convolve8(src, src_stride,
temp, 16,
filter_x, x_step_q4,
filter_y, y_step_q4,
w, h);
vp9_convolve_3by8(temp, 16,
dst, dst_stride,
NULL, 0, /* These unused parameter should be removed! */
NULL, 0, /* These unused parameter should be removed! */
w, h);
}
void vp9_convolve8_5by8_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
/* Fixed size intermediate buffer places limits on parameters. */
DECLARE_ALIGNED_ARRAY(16, uint8_t, temp, 16 * 16);
assert(w <= 16);
assert(h <= 16);
vp9_convolve8(src, src_stride,
temp, 16,
filter_x, x_step_q4,
filter_y, y_step_q4,
w, h);
vp9_convolve_5by8(temp, 16,
dst, dst_stride,
NULL, 0, /* These unused parameter should be removed! */
NULL, 0, /* These unused parameter should be removed! */
w, h);
}
void vp9_convolve8_3qtr_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
/* Fixed size intermediate buffer places limits on parameters. */
DECLARE_ALIGNED_ARRAY(16, uint8_t, temp, 16 * 16);
assert(w <= 16);
assert(h <= 16);
vp9_convolve8(src, src_stride,
temp, 16,
filter_x, x_step_q4,
filter_y, y_step_q4,
w, h);
vp9_convolve_3qtr(temp, 16,
dst, dst_stride,
NULL, 0, /* These unused parameter should be removed! */
NULL, 0, /* These unused parameter should be removed! */
w, h);
}
void vp9_convolve8_7by8_c(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, int y_step_q4,
int w, int h) {
/* Fixed size intermediate buffer places limits on parameters. */
DECLARE_ALIGNED_ARRAY(16, uint8_t, temp, 16 * 16);
assert(w <= 16);
assert(h <= 16);
vp9_convolve8(src, src_stride,
temp, 16,
filter_x, x_step_q4,
filter_y, y_step_q4,
w, h);
vp9_convolve_7by8(temp, 16,
dst, dst_stride,
NULL, 0, /* These unused parameter should be removed! */
NULL, 0, /* These unused parameter should be removed! */
w, h);
}
#endif
void vp9_convolve_copy(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int filter_x_stride,
const int16_t *filter_y, int filter_y_stride,
int w, int h) {
if (w == 16 && h == 16) {
vp9_copy_mem16x16(src, src_stride, dst, dst_stride);
} else if (w == 8 && h == 8) {
vp9_copy_mem8x8(src, src_stride, dst, dst_stride);
} else if (w == 8 && h == 4) {
vp9_copy_mem8x4(src, src_stride, dst, dst_stride);
} else {
int r;
for (r = h; r > 0; --r) {
memcpy(dst, src, w);
src += src_stride;
dst += dst_stride;
}
}
}
void vp9_convolve_avg(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int filter_x_stride,
const int16_t *filter_y, int filter_y_stride,
int w, int h) {
int x, y;
for (y = 0; y < h; ++y) {
for (x = 0; x < w; ++x) {
dst[x] = (dst[x] + src[x] + 1) >> 1;
}
src += src_stride;
dst += dst_stride;
}
}
#if CONFIG_IMPLICIT_COMPOUNDINTER_WEIGHT
void vp9_convolve_1by8(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int filter_x_stride,
const int16_t *filter_y, int filter_y_stride,
int w, int h) {
int x, y;
for (y = 0; y < h; ++y) {
for (x = 0; x < w; ++x) {
dst[x] = combine_1by8(dst[x], src[x]);
}
src += src_stride;
dst += dst_stride;
}
}
void vp9_convolve_qtr(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int filter_x_stride,
const int16_t *filter_y, int filter_y_stride,
int w, int h) {
int x, y;
for (y = 0; y < h; ++y) {
for (x = 0; x < w; ++x) {
dst[x] = combine_qtr(dst[x], src[x]);
}
src += src_stride;
dst += dst_stride;
}
}
void vp9_convolve_3by8(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int filter_x_stride,
const int16_t *filter_y, int filter_y_stride,
int w, int h) {
int x, y;
for (y = 0; y < h; ++y) {
for (x = 0; x < w; ++x) {
dst[x] = combine_3by8(dst[x], src[x]);
}
src += src_stride;
dst += dst_stride;
}
}
void vp9_convolve_5by8(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int filter_x_stride,
const int16_t *filter_y, int filter_y_stride,
int w, int h) {
int x, y;
for (y = 0; y < h; ++y) {
for (x = 0; x < w; ++x) {
dst[x] = combine_5by8(dst[x], src[x]);
}
src += src_stride;
dst += dst_stride;
}
}
void vp9_convolve_3qtr(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int filter_x_stride,
const int16_t *filter_y, int filter_y_stride,
int w, int h) {
int x, y;
for (y = 0; y < h; ++y) {
for (x = 0; x < w; ++x) {
dst[x] = combine_3qtr(dst[x], src[x]);
}
src += src_stride;
dst += dst_stride;
}
}
void vp9_convolve_7by8(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
const int16_t *filter_x, int filter_x_stride,
const int16_t *filter_y, int filter_y_stride,
int w, int h) {
int x, y;
for (y = 0; y < h; ++y) {
for (x = 0; x < w; ++x) {
dst[x] = combine_7by8(dst[x], src[x]);
}
src += src_stride;
dst += dst_stride;
}
}
#endif
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