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Merge "vp9_convole.c cleanup."

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Dmitry Kovalev 2013-12-13 15:40:00 -08:00 committed by Gerrit Code Review
commit 33df4f0483
1 changed files with 107 additions and 156 deletions
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263
vp9/common/vp9_convolve.c
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@ -18,40 +18,21 @@
#include "vpx/vpx_integer.h"
#include "vpx_ports/mem.h"
static void convolve_horiz_c(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t 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;
/* NOTE: This assumes that the filter table is 256-byte aligned. */
/* TODO(agrange) Modify to make independent of table alignment. */
const int16_t *const filter_x_base =
(const int16_t *)(((intptr_t)filter_x0) & ~(intptr_t)0xff);
/* Adjust base pointer address for this source line */
src -= taps / 2 - 1;
static void convolve_horiz(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const subpel_kernel *x_filters,
int x0_q4, int x_step_q4, int w, int h) {
int x, y;
src -= SUBPEL_TAPS / 2 - 1;
for (y = 0; y < h; ++y) {
/* Initial phase offset */
int x_q4 = (int)(filter_x0 - filter_x_base) / taps;
int x_q4 = x0_q4;
for (x = 0; x < w; ++x) {
/* Per-pixel src offset */
const int src_x = x_q4 >> SUBPEL_BITS;
int sum = 0;
/* Pointer to filter to use */
const int16_t *const filter_x = filter_x_base +
(x_q4 & SUBPEL_MASK) * taps;
for (k = 0; k < taps; ++k)
sum += src[src_x + k] * filter_x[k];
const uint8_t *const src_x = &src[x_q4 >> SUBPEL_BITS];
const int16_t *const x_filter = x_filters[x_q4 & SUBPEL_MASK];
int k, sum = 0;
for (k = 0; k < SUBPEL_TAPS; ++k)
sum += src_x[k] * x_filter[k];
dst[x] = clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS));
/* Move to the next source pixel */
x_q4 += x_step_q4;
}
src += src_stride;
@ -59,41 +40,22 @@ static void convolve_horiz_c(const uint8_t *src, ptrdiff_t src_stride,
}
}
static void convolve_avg_horiz_c(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t 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;
/* NOTE: This assumes that the filter table is 256-byte aligned. */
/* TODO(agrange) Modify to make independent of table alignment. */
const int16_t *const filter_x_base =
(const int16_t *)(((intptr_t)filter_x0) & ~(intptr_t)0xff);
/* Adjust base pointer address for this source line */
src -= taps / 2 - 1;
static void convolve_avg_horiz(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const subpel_kernel *x_filters,
int x0_q4, int x_step_q4, int w, int h) {
int x, y;
src -= SUBPEL_TAPS / 2 - 1;
for (y = 0; y < h; ++y) {
/* Initial phase offset */
int x_q4 = (int)(filter_x0 - filter_x_base) / taps;
int x_q4 = x0_q4;
for (x = 0; x < w; ++x) {
/* Per-pixel src offset */
const int src_x = x_q4 >> SUBPEL_BITS;
int sum = 0;
/* Pointer to filter to use */
const int16_t *const filter_x = filter_x_base +
(x_q4 & SUBPEL_MASK) * taps;
for (k = 0; k < taps; ++k)
sum += src[src_x + k] * filter_x[k];
const uint8_t *const src_x = &src[x_q4 >> SUBPEL_BITS];
const int16_t *const x_filter = x_filters[x_q4 & SUBPEL_MASK];
int k, sum = 0;
for (k = 0; k < SUBPEL_TAPS; ++k)
sum += src_x[k] * x_filter[k];
dst[x] = ROUND_POWER_OF_TWO(dst[x] +
clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS)), 1);
/* Move to the next source pixel */
clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS)), 1);
x_q4 += x_step_q4;
}
src += src_stride;
@ -101,41 +63,22 @@ static void convolve_avg_horiz_c(const uint8_t *src, ptrdiff_t src_stride,
}
}
static void convolve_vert_c(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t 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;
/* NOTE: This assumes that the filter table is 256-byte aligned. */
/* TODO(agrange) Modify to make independent of table alignment. */
const int16_t *const filter_y_base =
(const int16_t *)(((intptr_t)filter_y0) & ~(intptr_t)0xff);
/* Adjust base pointer address for this source column */
src -= src_stride * (taps / 2 - 1);
static void convolve_vert(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const subpel_kernel *y_filters,
int y0_q4, int y_step_q4, int w, int h) {
int x, y;
src -= src_stride * (SUBPEL_TAPS / 2 - 1);
for (x = 0; x < w; ++x) {
/* Initial phase offset */
int y_q4 = (int)(filter_y0 - filter_y_base) / taps;
int y_q4 = y0_q4;
for (y = 0; y < h; ++y) {
/* Per-pixel src offset */
const int src_y = y_q4 >> SUBPEL_BITS;
int sum = 0;
/* Pointer to filter to use */
const int16_t *const filter_y = filter_y_base +
(y_q4 & SUBPEL_MASK) * taps;
for (k = 0; k < taps; ++k)
sum += src[(src_y + k) * src_stride] * filter_y[k];
dst[y * dst_stride] =
clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS));
/* Move to the next source pixel */
const unsigned char *src_y = &src[(y_q4 >> SUBPEL_BITS) * src_stride];
const int16_t *const y_filter = y_filters[y_q4 & SUBPEL_MASK];
int k, sum = 0;
for (k = 0; k < SUBPEL_TAPS; ++k)
sum += src_y[k * src_stride] * y_filter[k];
dst[y * dst_stride] = clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS));
y_q4 += y_step_q4;
}
++src;
@ -143,41 +86,23 @@ static void convolve_vert_c(const uint8_t *src, ptrdiff_t src_stride,
}
}
static void convolve_avg_vert_c(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t 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;
/* NOTE: This assumes that the filter table is 256-byte aligned. */
/* TODO(agrange) Modify to make independent of table alignment. */
const int16_t *const filter_y_base =
(const int16_t *)(((intptr_t)filter_y0) & ~(intptr_t)0xff);
/* Adjust base pointer address for this source column */
src -= src_stride * (taps / 2 - 1);
static void convolve_avg_vert(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const subpel_kernel *y_filters,
int y0_q4, int y_step_q4, int w, int h) {
int x, y;
src -= src_stride * (SUBPEL_TAPS / 2 - 1);
for (x = 0; x < w; ++x) {
/* Initial phase offset */
int y_q4 = (int)(filter_y0 - filter_y_base) / taps;
int y_q4 = y0_q4;
for (y = 0; y < h; ++y) {
/* Per-pixel src offset */
const int src_y = y_q4 >> SUBPEL_BITS;
int sum = 0;
/* Pointer to filter to use */
const int16_t *const filter_y = filter_y_base +
(y_q4 & SUBPEL_MASK) * taps;
for (k = 0; k < taps; ++k)
sum += src[(src_y + k) * src_stride] * filter_y[k];
const unsigned char *src_y = &src[(y_q4 >> SUBPEL_BITS) * src_stride];
const int16_t *const y_filter = y_filters[y_q4 & SUBPEL_MASK];
int k, sum = 0;
for (k = 0; k < SUBPEL_TAPS; ++k)
sum += src_y[k * src_stride] * y_filter[k];
dst[y * dst_stride] = ROUND_POWER_OF_TWO(dst[y * dst_stride] +
clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS)), 1);
/* Move to the next source pixel */
clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS)), 1);
y_q4 += y_step_q4;
}
++src;
@ -185,33 +110,42 @@ static void convolve_avg_vert_c(const uint8_t *src, ptrdiff_t src_stride,
}
}
static void convolve_c(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t 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 324, for y_step_q4 == 80,
* h == 64, taps == 8.
* y_step_q4 of 80 allows for 1/10 scale for 5 layer svc
*/
static void convolve(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const subpel_kernel *const x_filters,
int x0_q4, int x_step_q4,
const subpel_kernel *const y_filters,
int y0_q4, int y_step_q4,
int w, int h) {
// Fixed size intermediate buffer places limits on parameters.
// Maximum intermediate_height is 324, for y_step_q4 == 80,
// h == 64, taps == 8.
// y_step_q4 of 80 allows for 1/10 scale for 5 layer svc
uint8_t temp[64 * 324];
int intermediate_height = (((h - 1) * y_step_q4 + 15) >> 4) + taps;
int intermediate_height = (((h - 1) * y_step_q4 + 15) >> 4) + SUBPEL_TAPS;
assert(w <= 64);
assert(h <= 64);
assert(taps <= 8);
assert(y_step_q4 <= 80);
assert(x_step_q4 <= 80);
if (intermediate_height < h)
intermediate_height = h;
convolve_horiz_c(src - src_stride * (taps / 2 - 1), src_stride, temp, 64,
filter_x, x_step_q4, filter_y, y_step_q4, w,
intermediate_height, taps);
convolve_vert_c(temp + 64 * (taps / 2 - 1), 64, dst, dst_stride, filter_x,
x_step_q4, filter_y, y_step_q4, w, h, taps);
convolve_horiz(src - src_stride * (SUBPEL_TAPS / 2 - 1), src_stride, temp, 64,
x_filters, x0_q4, x_step_q4, w, intermediate_height);
convolve_vert(temp + 64 * (SUBPEL_TAPS / 2 - 1), 64, dst, dst_stride,
y_filters, y0_q4, y_step_q4, w, h);
}
static const subpel_kernel *get_filter_base(const int16_t *filter) {
// NOTE: This assumes that the filter table is 256-byte aligned.
// TODO(agrange) Modify to make independent of table alignment.
return (const subpel_kernel *)(((intptr_t)filter) & ~((intptr_t)0xFF));
}
static int get_filter_offset(const int16_t *f, const subpel_kernel *base) {
return (const subpel_kernel *)(intptr_t)f - base;
}
void vp9_convolve8_horiz_c(const uint8_t *src, ptrdiff_t src_stride,
@ -219,8 +153,11 @@ void vp9_convolve8_horiz_c(const uint8_t *src, ptrdiff_t src_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);
const subpel_kernel *const filters_x = get_filter_base(filter_x);
const int x0_q4 = get_filter_offset(filter_x, filters_x);
convolve_horiz(src, src_stride, dst, dst_stride, filters_x,
x0_q4, x_step_q4, w, h);
}
void vp9_convolve8_avg_horiz_c(const uint8_t *src, ptrdiff_t src_stride,
@ -228,8 +165,11 @@ void vp9_convolve8_avg_horiz_c(const uint8_t *src, ptrdiff_t src_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);
const subpel_kernel *const filters_x = get_filter_base(filter_x);
const int x0_q4 = get_filter_offset(filter_x, filters_x);
convolve_avg_horiz(src, src_stride, dst, dst_stride, filters_x,
x0_q4, x_step_q4, w, h);
}
void vp9_convolve8_vert_c(const uint8_t *src, ptrdiff_t src_stride,
@ -237,8 +177,10 @@ void vp9_convolve8_vert_c(const uint8_t *src, ptrdiff_t src_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);
const subpel_kernel *const filters_y = get_filter_base(filter_y);
const int y0_q4 = get_filter_offset(filter_y, filters_y);
convolve_vert(src, src_stride, dst, dst_stride, filters_y,
y0_q4, y_step_q4, w, h);
}
void vp9_convolve8_avg_vert_c(const uint8_t *src, ptrdiff_t src_stride,
@ -246,8 +188,10 @@ void vp9_convolve8_avg_vert_c(const uint8_t *src, ptrdiff_t src_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);
const subpel_kernel *const filters_y = get_filter_base(filter_y);
const int y0_q4 = get_filter_offset(filter_y, filters_y);
convolve_avg_vert(src, src_stride, dst, dst_stride, filters_y,
y0_q4, y_step_q4, w, h);
}
void vp9_convolve8_c(const uint8_t *src, ptrdiff_t src_stride,
@ -255,8 +199,15 @@ void vp9_convolve8_c(const uint8_t *src, ptrdiff_t src_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);
const subpel_kernel *const filters_x = get_filter_base(filter_x);
const int x0_q4 = get_filter_offset(filter_x, filters_x);
const subpel_kernel *const filters_y = get_filter_base(filter_y);
const int y0_q4 = get_filter_offset(filter_y, filters_y);
convolve(src, src_stride, dst, dst_stride,
filters_x, x0_q4, x_step_q4,
filters_y, y0_q4, y_step_q4, w, h);
}
void vp9_convolve8_avg_c(const uint8_t *src, ptrdiff_t src_stride,
@ -269,9 +220,9 @@ void vp9_convolve8_avg_c(const uint8_t *src, ptrdiff_t src_stride,
assert(w <= 64);
assert(h <= 64);
vp9_convolve8(src, src_stride, temp, 64,
filter_x, x_step_q4, filter_y, y_step_q4, w, h);
vp9_convolve_avg(temp, 64, dst, dst_stride, NULL, 0, NULL, 0, w, h);
vp9_convolve8_c(src, src_stride, temp, 64,
filter_x, x_step_q4, filter_y, y_step_q4, w, h);
vp9_convolve_avg_c(temp, 64, dst, dst_stride, NULL, 0, NULL, 0, w, h);
}
void vp9_convolve_copy_c(const uint8_t *src, ptrdiff_t src_stride,