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Diffstat (limited to 'third_party/aom/av1/common/convolve.c')
| -rw-r--r-- | third_party/aom/av1/common/convolve.c | 1295 |
1 files changed, 1295 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/convolve.c b/third_party/aom/av1/common/convolve.c new file mode 100644 index 0000000000..1f11126fc3 --- /dev/null +++ b/third_party/aom/av1/common/convolve.c @@ -0,0 +1,1295 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include <assert.h> +#include <string.h> + +#include "config/aom_dsp_rtcd.h" +#include "config/av1_rtcd.h" + +#include "av1/common/blockd.h" +#include "av1/common/convolve.h" +#include "av1/common/filter.h" +#include "av1/common/onyxc_int.h" +#include "av1/common/resize.h" +#include "aom_dsp/aom_dsp_common.h" +#include "aom_ports/mem.h" + +void av1_convolve_horiz_rs_c(const uint8_t *src, int src_stride, uint8_t *dst, + int dst_stride, int w, int h, + const int16_t *x_filters, int x0_qn, + int x_step_qn) { + src -= UPSCALE_NORMATIVE_TAPS / 2 - 1; + for (int y = 0; y < h; ++y) { + int x_qn = x0_qn; + for (int x = 0; x < w; ++x) { + const uint8_t *const src_x = &src[x_qn >> RS_SCALE_SUBPEL_BITS]; + const int x_filter_idx = + (x_qn & RS_SCALE_SUBPEL_MASK) >> RS_SCALE_EXTRA_BITS; + assert(x_filter_idx <= RS_SUBPEL_MASK); + const int16_t *const x_filter = + &x_filters[x_filter_idx * UPSCALE_NORMATIVE_TAPS]; + int sum = 0; + for (int k = 0; k < UPSCALE_NORMATIVE_TAPS; ++k) + sum += src_x[k] * x_filter[k]; + dst[x] = clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS)); + x_qn += x_step_qn; + } + src += src_stride; + dst += dst_stride; + } +} + +void av1_highbd_convolve_horiz_rs_c(const uint16_t *src, int src_stride, + uint16_t *dst, int dst_stride, int w, int h, + const int16_t *x_filters, int x0_qn, + int x_step_qn, int bd) { + src -= UPSCALE_NORMATIVE_TAPS / 2 - 1; + for (int y = 0; y < h; ++y) { + int x_qn = x0_qn; + for (int x = 0; x < w; ++x) { + const uint16_t *const src_x = &src[x_qn >> RS_SCALE_SUBPEL_BITS]; + const int x_filter_idx = + (x_qn & RS_SCALE_SUBPEL_MASK) >> RS_SCALE_EXTRA_BITS; + assert(x_filter_idx <= RS_SUBPEL_MASK); + const int16_t *const x_filter = + &x_filters[x_filter_idx * UPSCALE_NORMATIVE_TAPS]; + int sum = 0; + for (int k = 0; k < UPSCALE_NORMATIVE_TAPS; ++k) + sum += src_x[k] * x_filter[k]; + 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_convolve_2d_sr_c(const uint8_t *src, int src_stride, uint8_t *dst, + int dst_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params) { + int16_t im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]; + int im_h = h + filter_params_y->taps - 1; + int im_stride = w; + const int fo_vert = filter_params_y->taps / 2 - 1; + const int fo_horiz = filter_params_x->taps / 2 - 1; + const int bd = 8; + const int bits = + FILTER_BITS * 2 - conv_params->round_0 - conv_params->round_1; + + // horizontal filter + const uint8_t *src_horiz = src - fo_vert * src_stride; + const int16_t *x_filter = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_q4 & SUBPEL_MASK); + for (int y = 0; y < im_h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t sum = (1 << (bd + FILTER_BITS - 1)); + for (int k = 0; k < filter_params_x->taps; ++k) { + sum += x_filter[k] * src_horiz[y * src_stride + x - fo_horiz + k]; + } + assert(0 <= sum && sum < (1 << (bd + FILTER_BITS + 1))); + im_block[y * im_stride + x] = + (int16_t)ROUND_POWER_OF_TWO(sum, conv_params->round_0); + } + } + + // vertical filter + int16_t *src_vert = im_block + fo_vert * im_stride; + const int16_t *y_filter = av1_get_interp_filter_subpel_kernel( + filter_params_y, subpel_y_q4 & SUBPEL_MASK); + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t sum = 1 << offset_bits; + for (int k = 0; k < filter_params_y->taps; ++k) { + sum += y_filter[k] * src_vert[(y - fo_vert + k) * im_stride + x]; + } + assert(0 <= sum && sum < (1 << (offset_bits + 2))); + int16_t res = ROUND_POWER_OF_TWO(sum, conv_params->round_1) - + ((1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1))); + dst[y * dst_stride + x] = clip_pixel(ROUND_POWER_OF_TWO(res, bits)); + } + } +} + +void av1_convolve_y_sr_c(const uint8_t *src, int src_stride, uint8_t *dst, + int dst_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params) { + const int fo_vert = filter_params_y->taps / 2 - 1; + (void)filter_params_x; + (void)subpel_x_q4; + (void)conv_params; + + assert(conv_params->round_0 <= FILTER_BITS); + assert(((conv_params->round_0 + conv_params->round_1) <= (FILTER_BITS + 1)) || + ((conv_params->round_0 + conv_params->round_1) == (2 * FILTER_BITS))); + + // vertical filter + const int16_t *y_filter = av1_get_interp_filter_subpel_kernel( + filter_params_y, subpel_y_q4 & SUBPEL_MASK); + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t res = 0; + for (int k = 0; k < filter_params_y->taps; ++k) { + res += y_filter[k] * src[(y - fo_vert + k) * src_stride + x]; + } + dst[y * dst_stride + x] = + clip_pixel(ROUND_POWER_OF_TWO(res, FILTER_BITS)); + } + } +} + +void av1_convolve_x_sr_c(const uint8_t *src, int src_stride, uint8_t *dst, + int dst_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params) { + const int fo_horiz = filter_params_x->taps / 2 - 1; + const int bits = FILTER_BITS - conv_params->round_0; + (void)filter_params_y; + (void)subpel_y_q4; + (void)conv_params; + + assert(bits >= 0); + assert((FILTER_BITS - conv_params->round_1) >= 0 || + ((conv_params->round_0 + conv_params->round_1) == 2 * FILTER_BITS)); + + // horizontal filter + const int16_t *x_filter = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_q4 & SUBPEL_MASK); + + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t res = 0; + for (int k = 0; k < filter_params_x->taps; ++k) { + res += x_filter[k] * src[y * src_stride + x - fo_horiz + k]; + } + res = ROUND_POWER_OF_TWO(res, conv_params->round_0); + dst[y * dst_stride + x] = clip_pixel(ROUND_POWER_OF_TWO(res, bits)); + } + } +} + +void av1_convolve_2d_copy_sr_c(const uint8_t *src, int src_stride, uint8_t *dst, + int dst_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params) { + (void)filter_params_x; + (void)filter_params_y; + (void)subpel_x_q4; + (void)subpel_y_q4; + (void)conv_params; + + for (int y = 0; y < h; ++y) { + memcpy(dst + y * dst_stride, src + y * src_stride, w * sizeof(src[0])); + } +} + +void av1_jnt_convolve_2d_c(const uint8_t *src, int src_stride, uint8_t *dst8, + int dst8_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params) { + CONV_BUF_TYPE *dst = conv_params->dst; + int dst_stride = conv_params->dst_stride; + int16_t im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]; + int im_h = h + filter_params_y->taps - 1; + int im_stride = w; + const int fo_vert = filter_params_y->taps / 2 - 1; + const int fo_horiz = filter_params_x->taps / 2 - 1; + const int bd = 8; + const int round_bits = + 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1; + + // horizontal filter + const uint8_t *src_horiz = src - fo_vert * src_stride; + const int16_t *x_filter = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_q4 & SUBPEL_MASK); + for (int y = 0; y < im_h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t sum = (1 << (bd + FILTER_BITS - 1)); + for (int k = 0; k < filter_params_x->taps; ++k) { + sum += x_filter[k] * src_horiz[y * src_stride + x - fo_horiz + k]; + } + assert(0 <= sum && sum < (1 << (bd + FILTER_BITS + 1))); + im_block[y * im_stride + x] = + (int16_t)ROUND_POWER_OF_TWO(sum, conv_params->round_0); + } + } + + // vertical filter + int16_t *src_vert = im_block + fo_vert * im_stride; + const int16_t *y_filter = av1_get_interp_filter_subpel_kernel( + filter_params_y, subpel_y_q4 & SUBPEL_MASK); + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t sum = 1 << offset_bits; + for (int k = 0; k < filter_params_y->taps; ++k) { + sum += y_filter[k] * src_vert[(y - fo_vert + k) * im_stride + x]; + } + assert(0 <= sum && sum < (1 << (offset_bits + 2))); + CONV_BUF_TYPE res = ROUND_POWER_OF_TWO(sum, conv_params->round_1); + if (conv_params->do_average) { + int32_t tmp = dst[y * dst_stride + x]; + if (conv_params->use_jnt_comp_avg) { + tmp = tmp * conv_params->fwd_offset + res * conv_params->bck_offset; + tmp = tmp >> DIST_PRECISION_BITS; + } else { + tmp += res; + tmp = tmp >> 1; + } + tmp -= (1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1)); + dst8[y * dst8_stride + x] = + clip_pixel(ROUND_POWER_OF_TWO(tmp, round_bits)); + } else { + dst[y * dst_stride + x] = res; + } + } + } +} + +void av1_jnt_convolve_y_c(const uint8_t *src, int src_stride, uint8_t *dst8, + int dst8_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params) { + CONV_BUF_TYPE *dst = conv_params->dst; + int dst_stride = conv_params->dst_stride; + const int fo_vert = filter_params_y->taps / 2 - 1; + const int bits = FILTER_BITS - conv_params->round_0; + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + const int round_offset = (1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1)); + const int round_bits = + 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1; + (void)filter_params_x; + (void)subpel_x_q4; + + // vertical filter + const int16_t *y_filter = av1_get_interp_filter_subpel_kernel( + filter_params_y, subpel_y_q4 & SUBPEL_MASK); + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t res = 0; + for (int k = 0; k < filter_params_y->taps; ++k) { + res += y_filter[k] * src[(y - fo_vert + k) * src_stride + x]; + } + res *= (1 << bits); + res = ROUND_POWER_OF_TWO(res, conv_params->round_1) + round_offset; + + if (conv_params->do_average) { + int32_t tmp = dst[y * dst_stride + x]; + if (conv_params->use_jnt_comp_avg) { + tmp = tmp * conv_params->fwd_offset + res * conv_params->bck_offset; + tmp = tmp >> DIST_PRECISION_BITS; + } else { + tmp += res; + tmp = tmp >> 1; + } + tmp -= round_offset; + dst8[y * dst8_stride + x] = + clip_pixel(ROUND_POWER_OF_TWO(tmp, round_bits)); + } else { + dst[y * dst_stride + x] = res; + } + } + } +} + +void av1_jnt_convolve_x_c(const uint8_t *src, int src_stride, uint8_t *dst8, + int dst8_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params) { + CONV_BUF_TYPE *dst = conv_params->dst; + int dst_stride = conv_params->dst_stride; + const int fo_horiz = filter_params_x->taps / 2 - 1; + const int bits = FILTER_BITS - conv_params->round_1; + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + const int round_offset = (1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1)); + const int round_bits = + 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1; + (void)filter_params_y; + (void)subpel_y_q4; + + // horizontal filter + const int16_t *x_filter = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_q4 & SUBPEL_MASK); + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t res = 0; + for (int k = 0; k < filter_params_x->taps; ++k) { + res += x_filter[k] * src[y * src_stride + x - fo_horiz + k]; + } + res = (1 << bits) * ROUND_POWER_OF_TWO(res, conv_params->round_0); + res += round_offset; + + if (conv_params->do_average) { + int32_t tmp = dst[y * dst_stride + x]; + if (conv_params->use_jnt_comp_avg) { + tmp = tmp * conv_params->fwd_offset + res * conv_params->bck_offset; + tmp = tmp >> DIST_PRECISION_BITS; + } else { + tmp += res; + tmp = tmp >> 1; + } + tmp -= round_offset; + dst8[y * dst8_stride + x] = + clip_pixel(ROUND_POWER_OF_TWO(tmp, round_bits)); + } else { + dst[y * dst_stride + x] = res; + } + } + } +} + +void av1_jnt_convolve_2d_copy_c(const uint8_t *src, int src_stride, + uint8_t *dst8, int dst8_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params) { + CONV_BUF_TYPE *dst = conv_params->dst; + int dst_stride = conv_params->dst_stride; + const int bits = + FILTER_BITS * 2 - conv_params->round_1 - conv_params->round_0; + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + const int round_offset = (1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1)); + (void)filter_params_x; + (void)filter_params_y; + (void)subpel_x_q4; + (void)subpel_y_q4; + + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + CONV_BUF_TYPE res = src[y * src_stride + x] << bits; + res += round_offset; + + if (conv_params->do_average) { + int32_t tmp = dst[y * dst_stride + x]; + if (conv_params->use_jnt_comp_avg) { + tmp = tmp * conv_params->fwd_offset + res * conv_params->bck_offset; + tmp = tmp >> DIST_PRECISION_BITS; + } else { + tmp += res; + tmp = tmp >> 1; + } + tmp -= round_offset; + dst8[y * dst8_stride + x] = clip_pixel(ROUND_POWER_OF_TWO(tmp, bits)); + } else { + dst[y * dst_stride + x] = res; + } + } + } +} + +void av1_convolve_2d_scale_c(const uint8_t *src, int src_stride, uint8_t *dst8, + int dst8_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_qn, const int x_step_qn, + const int subpel_y_qn, const int y_step_qn, + ConvolveParams *conv_params) { + int16_t im_block[(2 * MAX_SB_SIZE + MAX_FILTER_TAP) * MAX_SB_SIZE]; + int im_h = (((h - 1) * y_step_qn + subpel_y_qn) >> SCALE_SUBPEL_BITS) + + filter_params_y->taps; + CONV_BUF_TYPE *dst16 = conv_params->dst; + const int dst16_stride = conv_params->dst_stride; + const int bits = + FILTER_BITS * 2 - conv_params->round_0 - conv_params->round_1; + assert(bits >= 0); + int im_stride = w; + const int fo_vert = filter_params_y->taps / 2 - 1; + const int fo_horiz = filter_params_x->taps / 2 - 1; + const int bd = 8; + + // horizontal filter + const uint8_t *src_horiz = src - fo_vert * src_stride; + for (int y = 0; y < im_h; ++y) { + int x_qn = subpel_x_qn; + for (int x = 0; x < w; ++x, x_qn += x_step_qn) { + const uint8_t *const src_x = &src_horiz[(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, x_filter_idx); + int32_t sum = (1 << (bd + FILTER_BITS - 1)); + for (int k = 0; k < filter_params_x->taps; ++k) { + sum += x_filter[k] * src_x[k - fo_horiz]; + } + assert(0 <= sum && sum < (1 << (bd + FILTER_BITS + 1))); + im_block[y * im_stride + x] = + (int16_t)ROUND_POWER_OF_TWO(sum, conv_params->round_0); + } + src_horiz += src_stride; + } + + // vertical filter + int16_t *src_vert = im_block + fo_vert * im_stride; + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + for (int x = 0; x < w; ++x) { + int y_qn = subpel_y_qn; + for (int y = 0; y < h; ++y, y_qn += y_step_qn) { + const int16_t *src_y = &src_vert[(y_qn >> SCALE_SUBPEL_BITS) * im_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, y_filter_idx); + int32_t sum = 1 << offset_bits; + for (int k = 0; k < filter_params_y->taps; ++k) { + sum += y_filter[k] * src_y[(k - fo_vert) * im_stride]; + } + assert(0 <= sum && sum < (1 << (offset_bits + 2))); + CONV_BUF_TYPE res = ROUND_POWER_OF_TWO(sum, conv_params->round_1); + if (conv_params->is_compound) { + if (conv_params->do_average) { + int32_t tmp = dst16[y * dst16_stride + x]; + if (conv_params->use_jnt_comp_avg) { + tmp = tmp * conv_params->fwd_offset + res * conv_params->bck_offset; + tmp = tmp >> DIST_PRECISION_BITS; + } else { + tmp += res; + tmp = tmp >> 1; + } + /* Subtract round offset and convolve round */ + tmp = tmp - ((1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1))); + dst8[y * dst8_stride + x] = clip_pixel(ROUND_POWER_OF_TWO(tmp, bits)); + } else { + dst16[y * dst16_stride + x] = res; + } + } else { + /* Subtract round offset and convolve round */ + int32_t tmp = res - ((1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1))); + dst8[y * dst8_stride + x] = clip_pixel(ROUND_POWER_OF_TWO(tmp, bits)); + } + } + src_vert++; + } +} + +static void convolve_2d_scale_wrapper( + const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int w, + int h, const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, const int subpel_x_qn, + const int x_step_qn, const int subpel_y_qn, const int y_step_qn, + ConvolveParams *conv_params) { + if (conv_params->is_compound) { + assert(conv_params->dst != NULL); + } + av1_convolve_2d_scale(src, src_stride, dst, dst_stride, w, h, filter_params_x, + filter_params_y, subpel_x_qn, x_step_qn, subpel_y_qn, + y_step_qn, conv_params); +} + +// TODO(huisu@google.com): bilinear filtering only needs 2 taps in general. So +// we may create optimized code to do 2-tap filtering for all bilinear filtering +// usages, not just IntraBC. +static void convolve_2d_for_intrabc(const uint8_t *src, int src_stride, + uint8_t *dst, int dst_stride, int w, int h, + int subpel_x_q4, int subpel_y_q4, + ConvolveParams *conv_params) { + const InterpFilterParams *filter_params_x = + subpel_x_q4 ? &av1_intrabc_filter_params : NULL; + const InterpFilterParams *filter_params_y = + subpel_y_q4 ? &av1_intrabc_filter_params : NULL; + if (subpel_x_q4 != 0 && subpel_y_q4 != 0) { + av1_convolve_2d_sr_c(src, src_stride, dst, dst_stride, w, h, + filter_params_x, filter_params_y, 0, 0, conv_params); + } else if (subpel_x_q4 != 0) { + av1_convolve_x_sr_c(src, src_stride, dst, dst_stride, w, h, filter_params_x, + filter_params_y, 0, 0, conv_params); + } else { + av1_convolve_y_sr_c(src, src_stride, dst, dst_stride, w, h, filter_params_x, + filter_params_y, 0, 0, conv_params); + } +} + +void av1_convolve_2d_facade(const uint8_t *src, int src_stride, uint8_t *dst, + int dst_stride, int w, int h, + InterpFilters interp_filters, const int subpel_x_q4, + int x_step_q4, const int subpel_y_q4, int y_step_q4, + int scaled, ConvolveParams *conv_params, + const struct scale_factors *sf, int is_intrabc) { + assert(IMPLIES(is_intrabc, !scaled)); + (void)x_step_q4; + (void)y_step_q4; + (void)dst; + (void)dst_stride; + + if (is_intrabc && (subpel_x_q4 != 0 || subpel_y_q4 != 0)) { + convolve_2d_for_intrabc(src, src_stride, dst, dst_stride, w, h, subpel_x_q4, + subpel_y_q4, conv_params); + return; + } + + InterpFilter filter_x = 0; + InterpFilter filter_y = 0; + const int need_filter_params_x = (subpel_x_q4 != 0) | scaled; + const int need_filter_params_y = (subpel_y_q4 != 0) | scaled; + if (need_filter_params_x) + filter_x = av1_extract_interp_filter(interp_filters, 1); + if (need_filter_params_y) + filter_y = av1_extract_interp_filter(interp_filters, 0); + const InterpFilterParams *filter_params_x = + need_filter_params_x + ? av1_get_interp_filter_params_with_block_size(filter_x, w) + : NULL; + const InterpFilterParams *filter_params_y = + need_filter_params_y + ? av1_get_interp_filter_params_with_block_size(filter_y, h) + : NULL; + + if (scaled) { + convolve_2d_scale_wrapper(src, src_stride, dst, dst_stride, w, h, + filter_params_x, filter_params_y, subpel_x_q4, + x_step_q4, subpel_y_q4, y_step_q4, conv_params); + } else { + sf->convolve[subpel_x_q4 != 0][subpel_y_q4 != 0][conv_params->is_compound]( + src, src_stride, dst, dst_stride, w, h, filter_params_x, + filter_params_y, subpel_x_q4, subpel_y_q4, conv_params); + } +} + +void av1_highbd_convolve_2d_copy_sr_c( + const uint16_t *src, int src_stride, uint16_t *dst, int dst_stride, int w, + int h, const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, const int subpel_x_q4, + const int subpel_y_q4, ConvolveParams *conv_params, int bd) { + (void)filter_params_x; + (void)filter_params_y; + (void)subpel_x_q4; + (void)subpel_y_q4; + (void)conv_params; + (void)bd; + + for (int y = 0; y < h; ++y) { + memcpy(dst + y * dst_stride, src + y * src_stride, w * sizeof(src[0])); + } +} + +void av1_highbd_convolve_x_sr_c(const uint16_t *src, int src_stride, + uint16_t *dst, int dst_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params, int bd) { + const int fo_horiz = filter_params_x->taps / 2 - 1; + const int bits = FILTER_BITS - conv_params->round_0; + (void)filter_params_y; + (void)subpel_y_q4; + + assert(bits >= 0); + assert((FILTER_BITS - conv_params->round_1) >= 0 || + ((conv_params->round_0 + conv_params->round_1) == 2 * FILTER_BITS)); + + // horizontal filter + const int16_t *x_filter = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_q4 & SUBPEL_MASK); + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t res = 0; + for (int k = 0; k < filter_params_x->taps; ++k) { + res += x_filter[k] * src[y * src_stride + x - fo_horiz + k]; + } + res = ROUND_POWER_OF_TWO(res, conv_params->round_0); + dst[y * dst_stride + x] = + clip_pixel_highbd(ROUND_POWER_OF_TWO(res, bits), bd); + } + } +} + +void av1_highbd_convolve_y_sr_c(const uint16_t *src, int src_stride, + uint16_t *dst, int dst_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params, int bd) { + const int fo_vert = filter_params_y->taps / 2 - 1; + (void)filter_params_x; + (void)subpel_x_q4; + (void)conv_params; + + assert(conv_params->round_0 <= FILTER_BITS); + assert(((conv_params->round_0 + conv_params->round_1) <= (FILTER_BITS + 1)) || + ((conv_params->round_0 + conv_params->round_1) == (2 * FILTER_BITS))); + // vertical filter + const int16_t *y_filter = av1_get_interp_filter_subpel_kernel( + filter_params_y, subpel_y_q4 & SUBPEL_MASK); + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t res = 0; + for (int k = 0; k < filter_params_y->taps; ++k) { + res += y_filter[k] * src[(y - fo_vert + k) * src_stride + x]; + } + dst[y * dst_stride + x] = + clip_pixel_highbd(ROUND_POWER_OF_TWO(res, FILTER_BITS), bd); + } + } +} + +void av1_highbd_convolve_2d_sr_c(const uint16_t *src, int src_stride, + uint16_t *dst, int dst_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params, int bd) { + int16_t im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]; + int im_h = h + filter_params_y->taps - 1; + int im_stride = w; + const int fo_vert = filter_params_y->taps / 2 - 1; + const int fo_horiz = filter_params_x->taps / 2 - 1; + const int bits = + FILTER_BITS * 2 - conv_params->round_0 - conv_params->round_1; + assert(bits >= 0); + + // horizontal filter + const uint16_t *src_horiz = src - fo_vert * src_stride; + const int16_t *x_filter = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_q4 & SUBPEL_MASK); + for (int y = 0; y < im_h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t sum = (1 << (bd + FILTER_BITS - 1)); + for (int k = 0; k < filter_params_x->taps; ++k) { + sum += x_filter[k] * src_horiz[y * src_stride + x - fo_horiz + k]; + } + assert(0 <= sum && sum < (1 << (bd + FILTER_BITS + 1))); + im_block[y * im_stride + x] = + ROUND_POWER_OF_TWO(sum, conv_params->round_0); + } + } + + // vertical filter + int16_t *src_vert = im_block + fo_vert * im_stride; + const int16_t *y_filter = av1_get_interp_filter_subpel_kernel( + filter_params_y, subpel_y_q4 & SUBPEL_MASK); + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t sum = 1 << offset_bits; + for (int k = 0; k < filter_params_y->taps; ++k) { + sum += y_filter[k] * src_vert[(y - fo_vert + k) * im_stride + x]; + } + assert(0 <= sum && sum < (1 << (offset_bits + 2))); + int32_t res = ROUND_POWER_OF_TWO(sum, conv_params->round_1) - + ((1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1))); + dst[y * dst_stride + x] = + clip_pixel_highbd(ROUND_POWER_OF_TWO(res, bits), bd); + } + } +} + +void av1_highbd_jnt_convolve_2d_c(const uint16_t *src, int src_stride, + uint16_t *dst16, int dst16_stride, int w, + int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params, int bd) { + int x, y, k; + int16_t im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]; + CONV_BUF_TYPE *dst = conv_params->dst; + int dst_stride = conv_params->dst_stride; + int im_h = h + filter_params_y->taps - 1; + int im_stride = w; + const int fo_vert = filter_params_y->taps / 2 - 1; + const int fo_horiz = filter_params_x->taps / 2 - 1; + const int round_bits = + 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1; + assert(round_bits >= 0); + + // horizontal filter + const uint16_t *src_horiz = src - fo_vert * src_stride; + const int16_t *x_filter = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_q4 & SUBPEL_MASK); + for (y = 0; y < im_h; ++y) { + for (x = 0; x < w; ++x) { + int32_t sum = (1 << (bd + FILTER_BITS - 1)); + for (k = 0; k < filter_params_x->taps; ++k) { + sum += x_filter[k] * src_horiz[y * src_stride + x - fo_horiz + k]; + } + assert(0 <= sum && sum < (1 << (bd + FILTER_BITS + 1))); + (void)bd; + im_block[y * im_stride + x] = + (int16_t)ROUND_POWER_OF_TWO(sum, conv_params->round_0); + } + } + + // vertical filter + int16_t *src_vert = im_block + fo_vert * im_stride; + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + const int16_t *y_filter = av1_get_interp_filter_subpel_kernel( + filter_params_y, subpel_y_q4 & SUBPEL_MASK); + for (y = 0; y < h; ++y) { + for (x = 0; x < w; ++x) { + int32_t sum = 1 << offset_bits; + for (k = 0; k < filter_params_y->taps; ++k) { + sum += y_filter[k] * src_vert[(y - fo_vert + k) * im_stride + x]; + } + assert(0 <= sum && sum < (1 << (offset_bits + 2))); + CONV_BUF_TYPE res = ROUND_POWER_OF_TWO(sum, conv_params->round_1); + if (conv_params->do_average) { + int32_t tmp = dst[y * dst_stride + x]; + if (conv_params->use_jnt_comp_avg) { + tmp = tmp * conv_params->fwd_offset + res * conv_params->bck_offset; + tmp = tmp >> DIST_PRECISION_BITS; + } else { + tmp += res; + tmp = tmp >> 1; + } + tmp -= (1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1)); + dst16[y * dst16_stride + x] = + clip_pixel_highbd(ROUND_POWER_OF_TWO(tmp, round_bits), bd); + } else { + dst[y * dst_stride + x] = res; + } + } + } +} + +void av1_highbd_jnt_convolve_x_c(const uint16_t *src, int src_stride, + uint16_t *dst16, int dst16_stride, int w, + int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params, int bd) { + CONV_BUF_TYPE *dst = conv_params->dst; + int dst_stride = conv_params->dst_stride; + const int fo_horiz = filter_params_x->taps / 2 - 1; + const int bits = FILTER_BITS - conv_params->round_1; + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + const int round_offset = (1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1)); + const int round_bits = + 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1; + assert(round_bits >= 0); + (void)filter_params_y; + (void)subpel_y_q4; + assert(bits >= 0); + // horizontal filter + const int16_t *x_filter = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_q4 & SUBPEL_MASK); + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t res = 0; + for (int k = 0; k < filter_params_x->taps; ++k) { + res += x_filter[k] * src[y * src_stride + x - fo_horiz + k]; + } + res = (1 << bits) * ROUND_POWER_OF_TWO(res, conv_params->round_0); + res += round_offset; + + if (conv_params->do_average) { + int32_t tmp = dst[y * dst_stride + x]; + if (conv_params->use_jnt_comp_avg) { + tmp = tmp * conv_params->fwd_offset + res * conv_params->bck_offset; + tmp = tmp >> DIST_PRECISION_BITS; + } else { + tmp += res; + tmp = tmp >> 1; + } + tmp -= round_offset; + dst16[y * dst16_stride + x] = + clip_pixel_highbd(ROUND_POWER_OF_TWO(tmp, round_bits), bd); + } else { + dst[y * dst_stride + x] = res; + } + } + } +} + +void av1_highbd_jnt_convolve_y_c(const uint16_t *src, int src_stride, + uint16_t *dst16, int dst16_stride, int w, + int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_q4, const int subpel_y_q4, + ConvolveParams *conv_params, int bd) { + CONV_BUF_TYPE *dst = conv_params->dst; + int dst_stride = conv_params->dst_stride; + const int fo_vert = filter_params_y->taps / 2 - 1; + const int bits = FILTER_BITS - conv_params->round_0; + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + const int round_offset = (1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1)); + const int round_bits = + 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1; + assert(round_bits >= 0); + (void)filter_params_x; + (void)subpel_x_q4; + assert(bits >= 0); + // vertical filter + const int16_t *y_filter = av1_get_interp_filter_subpel_kernel( + filter_params_y, subpel_y_q4 & SUBPEL_MASK); + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + int32_t res = 0; + for (int k = 0; k < filter_params_y->taps; ++k) { + res += y_filter[k] * src[(y - fo_vert + k) * src_stride + x]; + } + res *= (1 << bits); + res = ROUND_POWER_OF_TWO(res, conv_params->round_1) + round_offset; + + if (conv_params->do_average) { + int32_t tmp = dst[y * dst_stride + x]; + if (conv_params->use_jnt_comp_avg) { + tmp = tmp * conv_params->fwd_offset + res * conv_params->bck_offset; + tmp = tmp >> DIST_PRECISION_BITS; + } else { + tmp += res; + tmp = tmp >> 1; + } + tmp -= round_offset; + dst16[y * dst16_stride + x] = + clip_pixel_highbd(ROUND_POWER_OF_TWO(tmp, round_bits), bd); + } else { + dst[y * dst_stride + x] = res; + } + } + } +} + +void av1_highbd_jnt_convolve_2d_copy_c( + const uint16_t *src, int src_stride, uint16_t *dst16, int dst16_stride, + int w, int h, const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, const int subpel_x_q4, + const int subpel_y_q4, ConvolveParams *conv_params, int bd) { + CONV_BUF_TYPE *dst = conv_params->dst; + int dst_stride = conv_params->dst_stride; + const int bits = + FILTER_BITS * 2 - conv_params->round_1 - conv_params->round_0; + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + const int round_offset = (1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1)); + assert(bits >= 0); + (void)filter_params_x; + (void)filter_params_y; + (void)subpel_x_q4; + (void)subpel_y_q4; + + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + CONV_BUF_TYPE res = src[y * src_stride + x] << bits; + res += round_offset; + if (conv_params->do_average) { + int32_t tmp = dst[y * dst_stride + x]; + if (conv_params->use_jnt_comp_avg) { + tmp = tmp * conv_params->fwd_offset + res * conv_params->bck_offset; + tmp = tmp >> DIST_PRECISION_BITS; + } else { + tmp += res; + tmp = tmp >> 1; + } + tmp -= round_offset; + dst16[y * dst16_stride + x] = + clip_pixel_highbd(ROUND_POWER_OF_TWO(tmp, bits), bd); + } else { + dst[y * dst_stride + x] = res; + } + } + } +} + +void av1_highbd_convolve_2d_scale_c(const uint16_t *src, int src_stride, + uint16_t *dst, int dst_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_qn, const int x_step_qn, + const int subpel_y_qn, const int y_step_qn, + ConvolveParams *conv_params, int bd) { + int16_t im_block[(2 * MAX_SB_SIZE + MAX_FILTER_TAP) * MAX_SB_SIZE]; + int im_h = (((h - 1) * y_step_qn + subpel_y_qn) >> SCALE_SUBPEL_BITS) + + filter_params_y->taps; + int im_stride = w; + const int fo_vert = filter_params_y->taps / 2 - 1; + const int fo_horiz = filter_params_x->taps / 2 - 1; + CONV_BUF_TYPE *dst16 = conv_params->dst; + const int dst16_stride = conv_params->dst_stride; + const int bits = + FILTER_BITS * 2 - conv_params->round_0 - conv_params->round_1; + assert(bits >= 0); + // horizontal filter + const uint16_t *src_horiz = src - fo_vert * src_stride; + for (int y = 0; y < im_h; ++y) { + int x_qn = subpel_x_qn; + for (int x = 0; x < w; ++x, x_qn += x_step_qn) { + const uint16_t *const src_x = &src_horiz[(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, x_filter_idx); + int32_t sum = (1 << (bd + FILTER_BITS - 1)); + for (int k = 0; k < filter_params_x->taps; ++k) { + sum += x_filter[k] * src_x[k - fo_horiz]; + } + assert(0 <= sum && sum < (1 << (bd + FILTER_BITS + 1))); + im_block[y * im_stride + x] = + (int16_t)ROUND_POWER_OF_TWO(sum, conv_params->round_0); + } + src_horiz += src_stride; + } + + // vertical filter + int16_t *src_vert = im_block + fo_vert * im_stride; + const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; + for (int x = 0; x < w; ++x) { + int y_qn = subpel_y_qn; + for (int y = 0; y < h; ++y, y_qn += y_step_qn) { + const int16_t *src_y = &src_vert[(y_qn >> SCALE_SUBPEL_BITS) * im_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, y_filter_idx); + int32_t sum = 1 << offset_bits; + for (int k = 0; k < filter_params_y->taps; ++k) { + sum += y_filter[k] * src_y[(k - fo_vert) * im_stride]; + } + assert(0 <= sum && sum < (1 << (offset_bits + 2))); + CONV_BUF_TYPE res = ROUND_POWER_OF_TWO(sum, conv_params->round_1); + if (conv_params->is_compound) { + if (conv_params->do_average) { + int32_t tmp = dst16[y * dst16_stride + x]; + if (conv_params->use_jnt_comp_avg) { + tmp = tmp * conv_params->fwd_offset + res * conv_params->bck_offset; + tmp = tmp >> DIST_PRECISION_BITS; + } else { + tmp += res; + tmp = tmp >> 1; + } + /* Subtract round offset and convolve round */ + tmp = tmp - ((1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1))); + dst[y * dst_stride + x] = + clip_pixel_highbd(ROUND_POWER_OF_TWO(tmp, bits), bd); + } else { + dst16[y * dst16_stride + x] = res; + } + } else { + /* Subtract round offset and convolve round */ + int32_t tmp = res - ((1 << (offset_bits - conv_params->round_1)) + + (1 << (offset_bits - conv_params->round_1 - 1))); + dst[y * dst_stride + x] = + clip_pixel_highbd(ROUND_POWER_OF_TWO(tmp, bits), bd); + } + } + src_vert++; + } +} + +static void highbd_convolve_2d_for_intrabc(const uint16_t *src, int src_stride, + uint16_t *dst, int dst_stride, int w, + int h, int subpel_x_q4, + int subpel_y_q4, + ConvolveParams *conv_params, + int bd) { + const InterpFilterParams *filter_params_x = + subpel_x_q4 ? &av1_intrabc_filter_params : NULL; + const InterpFilterParams *filter_params_y = + subpel_y_q4 ? &av1_intrabc_filter_params : NULL; + if (subpel_x_q4 != 0 && subpel_y_q4 != 0) { + av1_highbd_convolve_2d_sr_c(src, src_stride, dst, dst_stride, w, h, + filter_params_x, filter_params_y, 0, 0, + conv_params, bd); + } else if (subpel_x_q4 != 0) { + av1_highbd_convolve_x_sr_c(src, src_stride, dst, dst_stride, w, h, + filter_params_x, filter_params_y, 0, 0, + conv_params, bd); + } else { + av1_highbd_convolve_y_sr_c(src, src_stride, dst, dst_stride, w, h, + filter_params_x, filter_params_y, 0, 0, + conv_params, bd); + } +} + +void av1_highbd_convolve_2d_facade(const uint8_t *src8, int src_stride, + uint8_t *dst8, int dst_stride, int w, int h, + InterpFilters interp_filters, + const int subpel_x_q4, int x_step_q4, + const int subpel_y_q4, int y_step_q4, + int scaled, ConvolveParams *conv_params, + const struct scale_factors *sf, + int is_intrabc, int bd) { + assert(IMPLIES(is_intrabc, !scaled)); + (void)x_step_q4; + (void)y_step_q4; + (void)dst_stride; + const uint16_t *src = CONVERT_TO_SHORTPTR(src8); + + if (is_intrabc && (subpel_x_q4 != 0 || subpel_y_q4 != 0)) { + uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); + highbd_convolve_2d_for_intrabc(src, src_stride, dst, dst_stride, w, h, + subpel_x_q4, subpel_y_q4, conv_params, bd); + return; + } + + InterpFilter filter_x = 0; + InterpFilter filter_y = 0; + const int need_filter_params_x = (subpel_x_q4 != 0) | scaled; + const int need_filter_params_y = (subpel_y_q4 != 0) | scaled; + if (need_filter_params_x) + filter_x = av1_extract_interp_filter(interp_filters, 1); + if (need_filter_params_y) + filter_y = av1_extract_interp_filter(interp_filters, 0); + const InterpFilterParams *filter_params_x = + need_filter_params_x + ? av1_get_interp_filter_params_with_block_size(filter_x, w) + : NULL; + const InterpFilterParams *filter_params_y = + need_filter_params_y + ? av1_get_interp_filter_params_with_block_size(filter_y, h) + : NULL; + + if (scaled) { + uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); + if (conv_params->is_compound) { + assert(conv_params->dst != NULL); + } + av1_highbd_convolve_2d_scale(src, src_stride, dst, dst_stride, w, h, + filter_params_x, filter_params_y, subpel_x_q4, + x_step_q4, subpel_y_q4, y_step_q4, conv_params, + bd); + } else { + uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); + + sf->highbd_convolve[subpel_x_q4 != 0][subpel_y_q4 != + 0][conv_params->is_compound]( + src, src_stride, dst, dst_stride, w, h, filter_params_x, + filter_params_y, subpel_x_q4, subpel_y_q4, conv_params, bd); + } +} + +// Note: Fixed size intermediate buffers, place limits on parameters +// of some functions. 2d filtering proceeds in 2 steps: +// (1) Interpolate horizontally into an intermediate buffer, temp. +// (2) Interpolate temp vertically to derive the sub-pixel result. +// Deriving the maximum number of rows in the temp buffer (135): +// --Smallest scaling factor is x1/2 ==> y_step_q4 = 32 (Normative). +// --Largest block size is 128x128 pixels. +// --128 rows in the downscaled frame span a distance of (128 - 1) * 32 in the +// original frame (in 1/16th pixel units). +// --Must round-up because block may be located at sub-pixel position. +// --Require an additional SUBPEL_TAPS rows for the 8-tap filter tails. +// --((128 - 1) * 32 + 15) >> 4 + 8 = 263. +#define WIENER_MAX_EXT_SIZE 263 + +static INLINE int horz_scalar_product(const uint8_t *a, const int16_t *b) { + int sum = 0; + for (int k = 0; k < SUBPEL_TAPS; ++k) sum += a[k] * b[k]; + return sum; +} + +static INLINE int highbd_horz_scalar_product(const uint16_t *a, + const int16_t *b) { + int sum = 0; + for (int k = 0; k < SUBPEL_TAPS; ++k) sum += a[k] * b[k]; + return sum; +} + +static INLINE int highbd_vert_scalar_product(const uint16_t *a, + ptrdiff_t a_stride, + const int16_t *b) { + int sum = 0; + for (int k = 0; k < SUBPEL_TAPS; ++k) sum += a[k * a_stride] * b[k]; + return sum; +} + +static const InterpKernel *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 InterpKernel *)(((intptr_t)filter) & ~((intptr_t)0xFF)); +} + +static int get_filter_offset(const int16_t *f, const InterpKernel *base) { + return (int)((const InterpKernel *)(intptr_t)f - base); +} + +static void convolve_add_src_horiz_hip(const uint8_t *src, ptrdiff_t src_stride, + uint16_t *dst, ptrdiff_t dst_stride, + const InterpKernel *x_filters, int x0_q4, + int x_step_q4, int w, int h, + int round0_bits) { + const int bd = 8; + src -= SUBPEL_TAPS / 2 - 1; + for (int y = 0; y < h; ++y) { + int x_q4 = x0_q4; + for (int x = 0; x < w; ++x) { + const uint8_t *const src_x = &src[x_q4 >> SUBPEL_BITS]; + const int16_t *const x_filter = x_filters[x_q4 & SUBPEL_MASK]; + const int rounding = ((int)src_x[SUBPEL_TAPS / 2 - 1] << FILTER_BITS) + + (1 << (bd + FILTER_BITS - 1)); + const int sum = horz_scalar_product(src_x, x_filter) + rounding; + dst[x] = (uint16_t)clamp(ROUND_POWER_OF_TWO(sum, round0_bits), 0, + WIENER_CLAMP_LIMIT(round0_bits, bd) - 1); + x_q4 += x_step_q4; + } + src += src_stride; + dst += dst_stride; + } +} + +static void convolve_add_src_vert_hip(const uint16_t *src, ptrdiff_t src_stride, + uint8_t *dst, ptrdiff_t dst_stride, + const InterpKernel *y_filters, int y0_q4, + int y_step_q4, int w, int h, + int round1_bits) { + const int bd = 8; + src -= src_stride * (SUBPEL_TAPS / 2 - 1); + + for (int x = 0; x < w; ++x) { + int y_q4 = y0_q4; + for (int y = 0; y < h; ++y) { + const uint16_t *src_y = &src[(y_q4 >> SUBPEL_BITS) * src_stride]; + const int16_t *const y_filter = y_filters[y_q4 & SUBPEL_MASK]; + const int rounding = + ((int)src_y[(SUBPEL_TAPS / 2 - 1) * src_stride] << FILTER_BITS) - + (1 << (bd + round1_bits - 1)); + const int sum = + highbd_vert_scalar_product(src_y, src_stride, y_filter) + rounding; + dst[y * dst_stride] = clip_pixel(ROUND_POWER_OF_TWO(sum, round1_bits)); + y_q4 += y_step_q4; + } + ++src; + ++dst; + } +} + +void av1_wiener_convolve_add_src_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, + const ConvolveParams *conv_params) { + const InterpKernel *const filters_x = get_filter_base(filter_x); + const int x0_q4 = get_filter_offset(filter_x, filters_x); + + const InterpKernel *const filters_y = get_filter_base(filter_y); + const int y0_q4 = get_filter_offset(filter_y, filters_y); + + uint16_t temp[WIENER_MAX_EXT_SIZE * MAX_SB_SIZE]; + const int intermediate_height = + (((h - 1) * y_step_q4 + y0_q4) >> SUBPEL_BITS) + SUBPEL_TAPS - 1; + memset(temp + (intermediate_height * MAX_SB_SIZE), 0, MAX_SB_SIZE); + + assert(w <= MAX_SB_SIZE); + assert(h <= MAX_SB_SIZE); + assert(y_step_q4 <= 32); + assert(x_step_q4 <= 32); + + convolve_add_src_horiz_hip(src - src_stride * (SUBPEL_TAPS / 2 - 1), + src_stride, temp, MAX_SB_SIZE, filters_x, x0_q4, + x_step_q4, w, intermediate_height, + conv_params->round_0); + convolve_add_src_vert_hip(temp + MAX_SB_SIZE * (SUBPEL_TAPS / 2 - 1), + MAX_SB_SIZE, dst, dst_stride, filters_y, y0_q4, + y_step_q4, w, h, conv_params->round_1); +} + +static void highbd_convolve_add_src_horiz_hip( + const uint8_t *src8, ptrdiff_t src_stride, uint16_t *dst, + ptrdiff_t dst_stride, const InterpKernel *x_filters, int x0_q4, + int x_step_q4, int w, int h, int round0_bits, int bd) { + const int extraprec_clamp_limit = WIENER_CLAMP_LIMIT(round0_bits, bd); + uint16_t *src = CONVERT_TO_SHORTPTR(src8); + src -= SUBPEL_TAPS / 2 - 1; + for (int y = 0; y < h; ++y) { + int x_q4 = x0_q4; + for (int x = 0; x < w; ++x) { + const uint16_t *const src_x = &src[x_q4 >> SUBPEL_BITS]; + const int16_t *const x_filter = x_filters[x_q4 & SUBPEL_MASK]; + const int rounding = ((int)src_x[SUBPEL_TAPS / 2 - 1] << FILTER_BITS) + + (1 << (bd + FILTER_BITS - 1)); + const int sum = highbd_horz_scalar_product(src_x, x_filter) + rounding; + dst[x] = (uint16_t)clamp(ROUND_POWER_OF_TWO(sum, round0_bits), 0, + extraprec_clamp_limit - 1); + x_q4 += x_step_q4; + } + src += src_stride; + dst += dst_stride; + } +} + +static void highbd_convolve_add_src_vert_hip( + const uint16_t *src, ptrdiff_t src_stride, uint8_t *dst8, + ptrdiff_t dst_stride, const InterpKernel *y_filters, int y0_q4, + int y_step_q4, int w, int h, int round1_bits, int bd) { + uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); + src -= src_stride * (SUBPEL_TAPS / 2 - 1); + for (int x = 0; x < w; ++x) { + int y_q4 = y0_q4; + for (int y = 0; y < h; ++y) { + const uint16_t *src_y = &src[(y_q4 >> SUBPEL_BITS) * src_stride]; + const int16_t *const y_filter = y_filters[y_q4 & SUBPEL_MASK]; + const int rounding = + ((int)src_y[(SUBPEL_TAPS / 2 - 1) * src_stride] << FILTER_BITS) - + (1 << (bd + round1_bits - 1)); + const int sum = + highbd_vert_scalar_product(src_y, src_stride, y_filter) + rounding; + dst[y * dst_stride] = + clip_pixel_highbd(ROUND_POWER_OF_TWO(sum, round1_bits), bd); + y_q4 += y_step_q4; + } + ++src; + ++dst; + } +} + +void av1_highbd_wiener_convolve_add_src_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, + const ConvolveParams *conv_params, int bd) { + const InterpKernel *const filters_x = get_filter_base(filter_x); + const int x0_q4 = get_filter_offset(filter_x, filters_x); + + const InterpKernel *const filters_y = get_filter_base(filter_y); + const int y0_q4 = get_filter_offset(filter_y, filters_y); + + uint16_t temp[WIENER_MAX_EXT_SIZE * MAX_SB_SIZE]; + const int intermediate_height = + (((h - 1) * y_step_q4 + y0_q4) >> SUBPEL_BITS) + SUBPEL_TAPS; + + assert(w <= MAX_SB_SIZE); + assert(h <= MAX_SB_SIZE); + assert(y_step_q4 <= 32); + assert(x_step_q4 <= 32); + assert(bd + FILTER_BITS - conv_params->round_0 + 2 <= 16); + + highbd_convolve_add_src_horiz_hip(src - src_stride * (SUBPEL_TAPS / 2 - 1), + src_stride, temp, MAX_SB_SIZE, filters_x, + x0_q4, x_step_q4, w, intermediate_height, + conv_params->round_0, bd); + highbd_convolve_add_src_vert_hip( + temp + MAX_SB_SIZE * (SUBPEL_TAPS / 2 - 1), MAX_SB_SIZE, dst, dst_stride, + filters_y, y0_q4, y_step_q4, w, h, conv_params->round_1, bd); +} |