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Commit 818005b4 authored by Debargha Mukherjee's avatar Debargha Mukherjee Committed by Urvang Joshi
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Support frame scaling prediction for highbitdepth 

Change-Id: Iffc8e04bb5fa5c63542d5f85e838e6bc60405099
parent 105b72c1
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Showing with 226 additions and 3 deletions
av1/common/convolve.c
View file @ 818005b4
......@@ -977,11 +977,11 @@ void av1_convolve_scale(const uint8_t *src, int src_stride, uint8_t *dst,
#else
const InterpFilter interp_filter,
#endif
const int subpel_x_q4, int x_step_q4,
const int subpel_y_q4, int y_step_q4,
const int subpel_x_qn, int x_step_qn,
const int subpel_y_qn, int y_step_qn,
ConvolveParams *conv_params) {
convolve_scale_helper(src, src_stride, dst, dst_stride, w, h, interp_filter,
subpel_x_q4, x_step_q4, subpel_y_q4, y_step_q4,
subpel_x_qn, x_step_qn, subpel_y_qn, y_step_qn,
conv_params, av1_convolve_horiz_facade_scale,
av1_convolve_vert_facade_scale);
}
......@@ -1040,6 +1040,39 @@ void av1_highbd_convolve_horiz_c(const uint16_t *src, int src_stride,
}
}
void av1_highbd_convolve_horiz_scale(const uint16_t *src, int src_stride,
uint16_t *dst, int dst_stride, int w,
int h,
const InterpFilterParams filter_params,
const int subpel_x_qn, int x_step_qn,
int avg, int bd) {
int x, y;
int filter_size = filter_params.taps;
src -= filter_size / 2 - 1;
for (y = 0; y < h; ++y) {
int x_qn = subpel_x_qn;
for (x = 0; x < w; ++x) {
const uint16_t *const src_x = &src[x_qn >> SCALE_SUBPEL_BITS];
const int x_filter_idx = (x_qn & SCALE_SUBPEL_MASK) >> SCALE_EXTRA_BITS;
assert(x_filter_idx < SUBPEL_SHIFTS);
const int16_t *x_filter =
av1_get_interp_filter_subpel_kernel(filter_params, x_filter_idx);
int k, sum = 0;
for (k = 0; k < filter_size; ++k) sum += src_x[k] * x_filter[k];
if (avg)
dst[x] = ROUND_POWER_OF_TWO(
dst[x] +
clip_pixel_highbd(ROUND_POWER_OF_TWO(sum, FILTER_BITS), bd),
1);
else
dst[x] = clip_pixel_highbd(ROUND_POWER_OF_TWO(sum, FILTER_BITS), bd);
x_qn += x_step_qn;
}
src += src_stride;
dst += dst_stride;
}
}
void av1_highbd_convolve_vert_c(const uint16_t *src, int src_stride,
uint16_t *dst, int dst_stride, int w, int h,
const InterpFilterParams filter_params,
......@@ -1074,6 +1107,43 @@ void av1_highbd_convolve_vert_c(const uint16_t *src, int src_stride,
}
}
void av1_highbd_convolve_vert_scale(const uint16_t *src, int src_stride,
uint16_t *dst, int dst_stride, int w, int h,
const InterpFilterParams filter_params,
const int subpel_y_qn, int y_step_qn,
int avg, int bd) {
int x, y;
int filter_size = filter_params.taps;
src -= src_stride * (filter_size / 2 - 1);
for (x = 0; x < w; ++x) {
int y_qn = subpel_y_qn;
for (y = 0; y < h; ++y) {
const uint16_t *const src_y =
&src[(y_qn >> SCALE_SUBPEL_BITS) * src_stride];
const int y_filter_idx = (y_qn & SCALE_SUBPEL_MASK) >> SCALE_EXTRA_BITS;
assert(y_filter_idx < SUBPEL_SHIFTS);
const int16_t *y_filter =
av1_get_interp_filter_subpel_kernel(filter_params, y_filter_idx);
int k, sum = 0;
for (k = 0; k < filter_size; ++k)
sum += src_y[k * src_stride] * y_filter[k];
if (avg) {
dst[y * dst_stride] = ROUND_POWER_OF_TWO(
dst[y * dst_stride] +
clip_pixel_highbd(ROUND_POWER_OF_TWO(sum, FILTER_BITS), bd),
1);
} else {
dst[y * dst_stride] =
clip_pixel_highbd(ROUND_POWER_OF_TWO(sum, FILTER_BITS), bd);
}
y_qn += y_step_qn;
}
++src;
++dst;
}
}
static void highbd_convolve_copy(const uint16_t *src, int src_stride,
uint16_t *dst, int dst_stride, int w, int h,
int avg, int bd) {
......@@ -1119,6 +1189,19 @@ void av1_highbd_convolve_horiz_facade(const uint8_t *src8, int src_stride,
}
}
void av1_highbd_convolve_horiz_facade_scale(
const uint8_t *src8, int src_stride, uint8_t *dst8, int dst_stride, int w,
int h, const InterpFilterParams filter_params, const int subpel_x_qn,
int x_step_qn, int avg, int bd) {
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
// TODO(debargha): Add special functions for filter_params.taps == SUBPEL_TAPS
// as in the function above.
av1_highbd_convolve_horiz_scale(src, src_stride, dst, dst_stride, w, h,
filter_params, subpel_x_qn, x_step_qn, avg,
bd);
}
void av1_highbd_convolve_vert_facade(const uint8_t *src8, int src_stride,
uint8_t *dst8, int dst_stride, int w,
int h,
......@@ -1144,6 +1227,19 @@ void av1_highbd_convolve_vert_facade(const uint8_t *src8, int src_stride,
}
}
void av1_highbd_convolve_vert_facade_scale(
const uint8_t *src8, int src_stride, uint8_t *dst8, int dst_stride, int w,
int h, const InterpFilterParams filter_params, const int subpel_y_qn,
int y_step_qn, int avg, int bd) {
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
// TODO(debargha): Add special functions for filter_params.taps == SUBPEL_TAPS
// as in the function above.
av1_highbd_convolve_vert_scale(src, src_stride, dst, dst_stride, w, h,
filter_params, subpel_y_qn, y_step_qn, avg,
bd);
}
void av1_highbd_convolve(const uint8_t *src8, int src_stride, uint8_t *dst8,
int dst_stride, int w, int h,
#if CONFIG_DUAL_FILTER
......@@ -1267,4 +1363,131 @@ void av1_highbd_convolve(const uint8_t *src8, int src_stride, uint8_t *dst8,
}
}
}
void av1_highbd_convolve_scale(const uint8_t *src8, int src_stride,
uint8_t *dst8, int dst_stride, int w, int h,
#if CONFIG_DUAL_FILTER
const InterpFilter *interp_filter,
#else
const InterpFilter interp_filter,
#endif
const int subpel_x_qn, int x_step_qn,
const int subpel_y_qn, int y_step_qn,
int ref_idx, int bd) {
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
int ignore_horiz = x_step_qn == SCALE_SUBPEL_SHIFTS && subpel_x_qn == 0;
int ignore_vert = y_step_qn == SCALE_SUBPEL_SHIFTS && subpel_y_qn == 0;
assert(w <= MAX_BLOCK_WIDTH);
assert(h <= MAX_BLOCK_HEIGHT);
assert(y_step_qn <= (MAX_STEP << SCALE_EXTRA_BITS));
assert(x_step_qn <= (MAX_STEP << SCALE_EXTRA_BITS));
if (ignore_horiz && ignore_vert) {
highbd_convolve_copy(src, src_stride, dst, dst_stride, w, h, ref_idx, bd);
} else if (ignore_vert) {
#if CONFIG_DUAL_FILTER
InterpFilterParams filter_params =
av1_get_interp_filter_params(interp_filter[1 + 2 * ref_idx]);
#else
InterpFilterParams filter_params =
av1_get_interp_filter_params(interp_filter);
#endif
av1_highbd_convolve_horiz_facade_scale(src8, src_stride, dst8, dst_stride,
w, h, filter_params, subpel_x_qn,
x_step_qn, ref_idx, bd);
} else if (ignore_horiz) {
#if CONFIG_DUAL_FILTER
InterpFilterParams filter_params =
av1_get_interp_filter_params(interp_filter[0 + 2 * ref_idx]);
#else
InterpFilterParams filter_params =
av1_get_interp_filter_params(interp_filter);
#endif
av1_highbd_convolve_vert_facade_scale(src8, src_stride, dst8, dst_stride, w,
h, filter_params, subpel_y_qn,
y_step_qn, ref_idx, bd);
} else {
// temp's size is set to a 256 aligned value to facilitate SIMD
// implementation. The value is greater than (maximum possible intermediate
// height or width) * MAX_SB_SIZE
DECLARE_ALIGNED(16, uint16_t,
temp[((MAX_SB_SIZE * 2 + 16) + 16) * MAX_SB_SIZE]);
uint8_t *temp8 = CONVERT_TO_BYTEPTR(temp);
int max_intermediate_size = ((MAX_SB_SIZE * 2 + 16) + 16);
int filter_size;
InterpFilterParams filter_params;
#if CONFIG_DUAL_FILTER
InterpFilterParams filter_params_x =
av1_get_interp_filter_params(interp_filter[1 + 2 * ref_idx]);
InterpFilterParams filter_params_y =
av1_get_interp_filter_params(interp_filter[0 + 2 * ref_idx]);
#endif
#if CONFIG_DUAL_FILTER && USE_EXTRA_FILTER
if (interp_filter[0 + 2 * ref_idx] == MULTITAP_SHARP &&
interp_filter[1 + 2 * ref_idx] == MULTITAP_SHARP) {
// Avoid two directions both using 12-tap filter.
// This will reduce hardware implementation cost.
filter_params_y = av1_get_interp_filter_params(EIGHTTAP_SHARP);
}
if (filter_params_y.taps < filter_params_x.taps) {
int intermediate_width;
int temp_stride = max_intermediate_size;
filter_params = filter_params_y;
filter_size = filter_params_x.taps;
intermediate_width =
(((w - 1) * x_step_qn + subpel_x_qn) >> SCALE_SUBPEL_BITS) +
filter_size;
assert(intermediate_width <= max_intermediate_size);
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_highbd_convolve_vert_facade_scale(
src8 - (filter_size / 2 - 1), src_stride, temp8, temp_stride,
intermediate_width, h, filter_params, subpel_y_qn, y_step_qn, 0, bd);
filter_params = filter_params_x;
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_highbd_convolve_horiz_facade_scale(
temp8 + (filter_size / 2 - 1), temp_stride, dst8, dst_stride, w, h,
filter_params, subpel_x_qn, x_step_qn, ref_idx, bd);
} else {
#endif // CONFIG_DUAL_FILTER && USE_EXTRA_FILTER
int intermediate_height;
int temp_stride = MAX_SB_SIZE;
#if CONFIG_DUAL_FILTER
filter_params = filter_params_x;
filter_size = filter_params_y.taps;
#else
filter_params = av1_get_interp_filter_params(interp_filter);
filter_size = filter_params.taps;
#endif
intermediate_height =
(((h - 1) * y_step_qn + subpel_y_qn) >> SCALE_SUBPEL_BITS) +
filter_size;
assert(intermediate_height <= max_intermediate_size);
(void)max_intermediate_size;
av1_highbd_convolve_horiz_facade_scale(
src8 - src_stride * (filter_size / 2 - 1), src_stride, temp8,
temp_stride, w, intermediate_height, filter_params, subpel_x_qn,
x_step_qn, 0, bd);
#if CONFIG_DUAL_FILTER
filter_params = filter_params_y;
#endif
filter_size = filter_params.taps;
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_highbd_convolve_vert_facade_scale(
temp8 + temp_stride * (filter_size / 2 - 1), temp_stride, dst8,
dst_stride, w, h, filter_params, subpel_y_qn, y_step_qn, ref_idx, bd);
#if CONFIG_DUAL_FILTER && USE_EXTRA_FILTER
}
#endif // CONFIG_DUAL_FILTER && USE_EXTRA_FILTER
}
}
#endif // CONFIG_HIGHBITDEPTH
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