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Commit 7caf1fe5 authored by Urvang Joshi's avatar Urvang Joshi
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Refactor av1_convolve() and av1_convolve_c(). 

BUG=aomedia:442

Change-Id: I6a861c40121118af8df4b46f985a2aac9f931056
parent 2a2a7dde
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Showing with 47 additions and 142 deletions
av1/common/convolve.c
View file @ 7caf1fe5
......@@ -333,15 +333,24 @@ void av1_convolve_2d_facade(const uint8_t *src, int src_stride, uint8_t *dst,
#endif // CONFIG_CONVOLVE_ROUND
void av1_convolve(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
typedef void (*ConvolveFunc)(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
const InterpFilterParams filter_params,
const int subpel_q4, int step_q4,
ConvolveParams *conv_params);
static void convolve_helper(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
#if CONFIG_DUAL_FILTER
const InterpFilter *interp_filter,
const InterpFilter *interp_filter,
#else
const InterpFilter interp_filter,
const InterpFilter interp_filter,
#endif
const int subpel_x_q4, int x_step_q4, const int subpel_y_q4,
int y_step_q4, ConvolveParams *conv_params) {
const int subpel_x_q4, int x_step_q4,
const int subpel_y_q4, int y_step_q4,
ConvolveParams *conv_params,
ConvolveFunc convolve_horiz,
ConvolveFunc convolve_vert) {
int ignore_horiz = x_step_q4 == 16 && subpel_x_q4 == 0;
int ignore_vert = y_step_q4 == 16 && subpel_y_q4 == 0;
#if CONFIG_DUAL_FILTER
......@@ -368,17 +377,15 @@ void av1_convolve(const uint8_t *src, int src_stride, uint8_t *dst,
filter_params = filter_params_x;
#endif
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_horiz_facade(src, src_stride, dst, dst_stride, w, h,
filter_params, subpel_x_q4, x_step_q4,
conv_params);
convolve_horiz(src, src_stride, dst, dst_stride, w, h, filter_params,
subpel_x_q4, x_step_q4, conv_params);
} else if (ignore_horiz) {
#if CONFIG_DUAL_FILTER
filter_params = filter_params_y;
#endif
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_vert_facade(src, src_stride, dst, dst_stride, w, h,
filter_params, subpel_y_q4, y_step_q4,
conv_params);
convolve_vert(src, src_stride, dst, dst_stride, w, h, filter_params,
subpel_y_q4, y_step_q4, conv_params);
} else {
// temp's size is set to a 256 aligned value to facilitate SIMD
// implementation. The value is greater than (maximum possible intermediate
......@@ -411,16 +418,14 @@ void av1_convolve(const uint8_t *src, int src_stride, uint8_t *dst,
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_vert_facade(src - (filter_size / 2 - 1), src_stride, temp,
temp_stride, intermediate_width, h,
filter_params, subpel_y_q4, y_step_q4,
&temp_conv_params);
convolve_vert(src - (filter_size / 2 - 1), src_stride, temp, temp_stride,
intermediate_width, h, filter_params, subpel_y_q4,
y_step_q4, &temp_conv_params);
filter_params = filter_params_x;
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_horiz_facade(temp + (filter_size / 2 - 1), temp_stride, dst,
dst_stride, w, h, filter_params, subpel_x_q4,
x_step_q4, conv_params);
convolve_horiz(temp + (filter_size / 2 - 1), temp_stride, dst, dst_stride,
w, h, filter_params, subpel_x_q4, x_step_q4, conv_params);
} else
#endif // CONFIG_DUAL_FILTER
{
......@@ -442,23 +447,36 @@ void av1_convolve(const uint8_t *src, int src_stride, uint8_t *dst,
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_horiz_facade(src - src_stride * (filter_size / 2 - 1),
src_stride, temp, temp_stride, w,
intermediate_height, filter_params, subpel_x_q4,
x_step_q4, &temp_conv_params);
convolve_horiz(src - src_stride * (filter_size / 2 - 1), src_stride, temp,
temp_stride, w, intermediate_height, filter_params,
subpel_x_q4, x_step_q4, &temp_conv_params);
#if CONFIG_DUAL_FILTER
filter_params = filter_params_y;
#endif
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_vert_facade(
temp + temp_stride * (filter_size / 2 - 1), temp_stride, dst,
dst_stride, w, h, filter_params, subpel_y_q4, y_step_q4, conv_params);
convolve_vert(temp + temp_stride * (filter_size / 2 - 1), temp_stride,
dst, dst_stride, w, h, filter_params, subpel_y_q4,
y_step_q4, conv_params);
}
}
}
void av1_convolve(const uint8_t *src, int src_stride, uint8_t *dst,
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_q4, int x_step_q4, const int subpel_y_q4,
int y_step_q4, ConvolveParams *conv_params) {
convolve_helper(src, src_stride, dst, dst_stride, w, h, interp_filter,
subpel_x_q4, x_step_q4, subpel_y_q4, y_step_q4, conv_params,
av1_convolve_horiz_facade, av1_convolve_vert_facade);
}
void av1_convolve_c(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
#if CONFIG_DUAL_FILTER
......@@ -468,122 +486,9 @@ void av1_convolve_c(const uint8_t *src, int src_stride, uint8_t *dst,
#endif
const int subpel_x_q4, int x_step_q4, const int subpel_y_q4,
int y_step_q4, ConvolveParams *conv_params) {
int ignore_horiz = x_step_q4 == 16 && subpel_x_q4 == 0;
int ignore_vert = y_step_q4 == 16 && subpel_y_q4 == 0;
#if CONFIG_DUAL_FILTER
InterpFilterParams filter_params_x =
av1_get_interp_filter_params(interp_filter[1 + 2 * conv_params->ref]);
InterpFilterParams filter_params_y =
av1_get_interp_filter_params(interp_filter[0 + 2 * conv_params->ref]);
InterpFilterParams filter_params;
#else
InterpFilterParams filter_params =
av1_get_interp_filter_params(interp_filter);
#endif
assert(conv_params->round == CONVOLVE_OPT_ROUND);
assert(w <= MAX_BLOCK_WIDTH);
assert(h <= MAX_BLOCK_HEIGHT);
assert(y_step_q4 <= MAX_STEP);
assert(x_step_q4 <= MAX_STEP);
if (ignore_horiz && ignore_vert) {
convolve_copy(src, src_stride, dst, dst_stride, w, h, conv_params);
} else if (ignore_vert) {
#if CONFIG_DUAL_FILTER
filter_params = filter_params_x;
#endif
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_horiz_facade_c(src, src_stride, dst, dst_stride, w, h,
filter_params, subpel_x_q4, x_step_q4,
conv_params);
} else if (ignore_horiz) {
#if CONFIG_DUAL_FILTER
filter_params = filter_params_y;
#endif
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_vert_facade_c(src, src_stride, dst, dst_stride, w, h,
filter_params, subpel_y_q4, y_step_q4,
conv_params);
} 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, uint8_t,
temp[((MAX_SB_SIZE * 2 + 16) + 16) * MAX_SB_SIZE]);
int max_intermediate_size = ((MAX_SB_SIZE * 2 + 16) + 16);
int filter_size;
#if CONFIG_DUAL_FILTER
if (interp_filter[0 + 2 * conv_params->ref] == MULTITAP_SHARP &&
interp_filter[1 + 2 * conv_params->ref] == 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);
}
// we do filter with fewer taps first to reduce hardware implementation
// complexity
if (filter_params_y.taps < filter_params_x.taps) {
int intermediate_width;
int temp_stride = max_intermediate_size;
ConvolveParams temp_conv_params;
temp_conv_params.ref = 0;
temp_conv_params.round = CONVOLVE_OPT_ROUND;
filter_params = filter_params_y;
filter_size = filter_params_x.taps;
intermediate_width =
(((w - 1) * x_step_q4 + subpel_x_q4) >> SUBPEL_BITS) + filter_size;
assert(intermediate_width <= max_intermediate_size);
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_vert_facade(src - (filter_size / 2 - 1), src_stride, temp,
temp_stride, intermediate_width, h,
filter_params, subpel_y_q4, y_step_q4,
&temp_conv_params);
filter_params = filter_params_x;
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_horiz_facade(temp + (filter_size / 2 - 1), temp_stride, dst,
dst_stride, w, h, filter_params, subpel_x_q4,
x_step_q4, conv_params);
} else {
#endif // CONFIG_DUAL_FILTER
int intermediate_height;
int temp_stride = MAX_SB_SIZE;
ConvolveParams temp_conv_params;
temp_conv_params.ref = 0;
temp_conv_params.round = CONVOLVE_OPT_ROUND;
#if CONFIG_DUAL_FILTER
filter_params = filter_params_x;
filter_size = filter_params_y.taps;
#else
filter_size = filter_params.taps;
#endif
intermediate_height =
(((h - 1) * y_step_q4 + subpel_y_q4) >> SUBPEL_BITS) + filter_size;
assert(intermediate_height <= max_intermediate_size);
(void)max_intermediate_size;
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_horiz_facade_c(src - src_stride * (filter_size / 2 - 1),
src_stride, temp, temp_stride, w,
intermediate_height, filter_params,
subpel_x_q4, x_step_q4, &temp_conv_params);
#if CONFIG_DUAL_FILTER
filter_params = filter_params_y;
#endif
assert(filter_params.taps <= MAX_FILTER_TAP);
av1_convolve_vert_facade_c(
temp + temp_stride * (filter_size / 2 - 1), temp_stride, dst,
dst_stride, w, h, filter_params, subpel_y_q4, y_step_q4, conv_params);
#if CONFIG_DUAL_FILTER
}
#endif // CONFIG_DUAL_FILTER
}
convolve_helper(src, src_stride, dst, dst_stride, w, h, interp_filter,
subpel_x_q4, x_step_q4, subpel_y_q4, y_step_q4, conv_params,
av1_convolve_horiz_facade_c, av1_convolve_vert_facade_c);
}
void av1_lowbd_convolve_init_c(void) {
......
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