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-rw-r--r--third_party/aom/aom_dsp/aom_convolve.c854
1 files changed, 854 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/aom_convolve.c b/third_party/aom/aom_dsp/aom_convolve.c
new file mode 100644
index 000000000..74f4c00fb
--- /dev/null
+++ b/third_party/aom/aom_dsp/aom_convolve.c
@@ -0,0 +1,854 @@
+/*
+ * 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 "./aom_config.h"
+#include "./aom_dsp_rtcd.h"
+#include "aom/aom_integer.h"
+#include "aom_dsp/aom_convolve.h"
+#include "aom_dsp/aom_dsp_common.h"
+#include "aom_dsp/aom_filter.h"
+#include "aom_ports/mem.h"
+
+static void convolve_horiz(const uint8_t *src, ptrdiff_t src_stride,
+ uint8_t *dst, ptrdiff_t dst_stride,
+ const InterpKernel *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) {
+ int x_q4 = x0_q4;
+ for (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];
+ 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));
+ x_q4 += x_step_q4;
+ }
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+static void convolve_avg_horiz(const uint8_t *src, ptrdiff_t src_stride,
+ uint8_t *dst, ptrdiff_t dst_stride,
+ const InterpKernel *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) {
+ int x_q4 = x0_q4;
+ for (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];
+ 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);
+ x_q4 += x_step_q4;
+ }
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+static void convolve_vert(const uint8_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 x, y;
+ src -= src_stride * (SUBPEL_TAPS / 2 - 1);
+
+ for (x = 0; x < w; ++x) {
+ int y_q4 = y0_q4;
+ for (y = 0; y < h; ++y) {
+ 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;
+ ++dst;
+ }
+}
+
+static void convolve_avg_vert(const uint8_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 x, y;
+ src -= src_stride * (SUBPEL_TAPS / 2 - 1);
+
+ for (x = 0; x < w; ++x) {
+ int y_q4 = y0_q4;
+ for (y = 0; y < h; ++y) {
+ 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);
+ y_q4 += y_step_q4;
+ }
+ ++src;
+ ++dst;
+ }
+}
+
+static void convolve(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t dst_stride, const InterpKernel *const x_filters,
+ int x0_q4, int x_step_q4,
+ const InterpKernel *const y_filters, int y0_q4,
+ int y_step_q4, int w, int h) {
+ // Note: Fixed size intermediate buffer, temp, places limits on parameters.
+ // 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 64x64 pixels.
+ // --64 rows in the downscaled frame span a distance of (64 - 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.
+ // --((64 - 1) * 32 + 15) >> 4 + 8 = 135.
+ uint8_t temp[MAX_EXT_SIZE * MAX_SB_SIZE];
+ 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);
+
+ convolve_horiz(src - src_stride * (SUBPEL_TAPS / 2 - 1), src_stride, temp,
+ MAX_SB_SIZE, x_filters, x0_q4, x_step_q4, w,
+ intermediate_height);
+ convolve_vert(temp + MAX_SB_SIZE * (SUBPEL_TAPS / 2 - 1), MAX_SB_SIZE, dst,
+ dst_stride, y_filters, y0_q4, y_step_q4, w, h);
+}
+
+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);
+}
+
+void aom_convolve8_horiz_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 InterpKernel *const filters_x = get_filter_base(filter_x);
+ const int x0_q4 = get_filter_offset(filter_x, filters_x);
+
+ (void)filter_y;
+ (void)y_step_q4;
+
+ convolve_horiz(src, src_stride, dst, dst_stride, filters_x, x0_q4, x_step_q4,
+ w, h);
+}
+
+void aom_convolve8_avg_horiz_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 InterpKernel *const filters_x = get_filter_base(filter_x);
+ const int x0_q4 = get_filter_offset(filter_x, filters_x);
+
+ (void)filter_y;
+ (void)y_step_q4;
+
+ convolve_avg_horiz(src, src_stride, dst, dst_stride, filters_x, x0_q4,
+ x_step_q4, w, h);
+}
+
+void aom_convolve8_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_y, int y_step_q4, int w,
+ int h) {
+ const InterpKernel *const filters_y = get_filter_base(filter_y);
+ const int y0_q4 = get_filter_offset(filter_y, filters_y);
+
+ (void)filter_x;
+ (void)x_step_q4;
+
+ convolve_vert(src, src_stride, dst, dst_stride, filters_y, y0_q4, y_step_q4,
+ w, h);
+}
+
+void aom_convolve8_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_y, int y_step_q4, int w,
+ int h) {
+ const InterpKernel *const filters_y = get_filter_base(filter_y);
+ const int y0_q4 = get_filter_offset(filter_y, filters_y);
+
+ (void)filter_x;
+ (void)x_step_q4;
+
+ convolve_avg_vert(src, src_stride, dst, dst_stride, filters_y, y0_q4,
+ y_step_q4, w, h);
+}
+
+void aom_convolve8_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 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);
+
+ convolve(src, src_stride, dst, dst_stride, filters_x, x0_q4, x_step_q4,
+ filters_y, y0_q4, y_step_q4, w, h);
+}
+
+void aom_convolve8_avg_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) {
+ /* Fixed size intermediate buffer places limits on parameters. */
+ DECLARE_ALIGNED(16, uint8_t, temp[MAX_SB_SIZE * MAX_SB_SIZE]);
+ assert(w <= MAX_SB_SIZE);
+ assert(h <= MAX_SB_SIZE);
+
+ aom_convolve8_c(src, src_stride, temp, MAX_SB_SIZE, filter_x, x_step_q4,
+ filter_y, y_step_q4, w, h);
+ aom_convolve_avg_c(temp, MAX_SB_SIZE, dst, dst_stride, NULL, 0, NULL, 0, w,
+ h);
+}
+
+void aom_convolve_copy_c(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t 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 r;
+
+ (void)filter_x;
+ (void)filter_x_stride;
+ (void)filter_y;
+ (void)filter_y_stride;
+
+ for (r = h; r > 0; --r) {
+ memcpy(dst, src, w);
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+void aom_convolve_avg_c(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+ ptrdiff_t 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;
+
+ (void)filter_x;
+ (void)filter_x_stride;
+ (void)filter_y;
+ (void)filter_y_stride;
+
+ for (y = 0; y < h; ++y) {
+ for (x = 0; x < w; ++x) dst[x] = ROUND_POWER_OF_TWO(dst[x] + src[x], 1);
+
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+void aom_scaled_horiz_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) {
+ aom_convolve8_horiz_c(src, src_stride, dst, dst_stride, filter_x, x_step_q4,
+ filter_y, y_step_q4, w, h);
+}
+
+void aom_scaled_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_y, int y_step_q4,
+ int w, int h) {
+ aom_convolve8_vert_c(src, src_stride, dst, dst_stride, filter_x, x_step_q4,
+ filter_y, y_step_q4, w, h);
+}
+
+void aom_scaled_2d_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) {
+ aom_convolve8_c(src, src_stride, dst, dst_stride, filter_x, x_step_q4,
+ filter_y, y_step_q4, w, h);
+}
+
+void aom_scaled_avg_horiz_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) {
+ aom_convolve8_avg_horiz_c(src, src_stride, dst, dst_stride, filter_x,
+ x_step_q4, filter_y, y_step_q4, w, h);
+}
+
+void aom_scaled_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_y, int y_step_q4, int w,
+ int h) {
+ aom_convolve8_avg_vert_c(src, src_stride, dst, dst_stride, filter_x,
+ x_step_q4, filter_y, y_step_q4, w, h);
+}
+
+void aom_scaled_avg_2d_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) {
+ aom_convolve8_avg_c(src, src_stride, dst, dst_stride, filter_x, x_step_q4,
+ filter_y, y_step_q4, w, h);
+}
+
+#if CONFIG_LOOP_RESTORATION
+static void convolve_add_src_horiz(const uint8_t *src, ptrdiff_t src_stride,
+ uint8_t *dst, ptrdiff_t dst_stride,
+ const InterpKernel *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) {
+ int x_q4 = x0_q4;
+ for (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];
+ 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) +
+ src_x[SUBPEL_TAPS / 2 - 1]);
+ x_q4 += x_step_q4;
+ }
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+static void convolve_add_src_vert(const uint8_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 x, y;
+ src -= src_stride * (SUBPEL_TAPS / 2 - 1);
+
+ for (x = 0; x < w; ++x) {
+ int y_q4 = y0_q4;
+ for (y = 0; y < h; ++y) {
+ 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) +
+ src_y[(SUBPEL_TAPS / 2 - 1) * src_stride]);
+ y_q4 += y_step_q4;
+ }
+ ++src;
+ ++dst;
+ }
+}
+
+static void convolve_add_src(const uint8_t *src, ptrdiff_t src_stride,
+ uint8_t *dst, ptrdiff_t dst_stride,
+ const InterpKernel *const x_filters, int x0_q4,
+ int x_step_q4, const InterpKernel *const y_filters,
+ int y0_q4, int y_step_q4, int w, int h) {
+ uint8_t temp[MAX_EXT_SIZE * MAX_SB_SIZE];
+ 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);
+
+ convolve_add_src_horiz(src - src_stride * (SUBPEL_TAPS / 2 - 1), src_stride,
+ temp, MAX_SB_SIZE, x_filters, x0_q4, x_step_q4, w,
+ intermediate_height);
+ convolve_add_src_vert(temp + MAX_SB_SIZE * (SUBPEL_TAPS / 2 - 1), MAX_SB_SIZE,
+ dst, dst_stride, y_filters, y0_q4, y_step_q4, w, h);
+}
+
+void aom_convolve8_add_src_horiz_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 InterpKernel *const filters_x = get_filter_base(filter_x);
+ const int x0_q4 = get_filter_offset(filter_x, filters_x);
+
+ (void)filter_y;
+ (void)y_step_q4;
+
+ convolve_add_src_horiz(src, src_stride, dst, dst_stride, filters_x, x0_q4,
+ x_step_q4, w, h);
+}
+
+void aom_convolve8_add_src_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_y, int y_step_q4, int w,
+ int h) {
+ const InterpKernel *const filters_y = get_filter_base(filter_y);
+ const int y0_q4 = get_filter_offset(filter_y, filters_y);
+
+ (void)filter_x;
+ (void)x_step_q4;
+
+ convolve_add_src_vert(src, src_stride, dst, dst_stride, filters_y, y0_q4,
+ y_step_q4, w, h);
+}
+
+void aom_convolve8_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 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);
+
+ convolve_add_src(src, src_stride, dst, dst_stride, filters_x, x0_q4,
+ x_step_q4, filters_y, y0_q4, y_step_q4, w, h);
+}
+#endif // CONFIG_LOOP_RESTORATION
+
+#if CONFIG_HIGHBITDEPTH
+static void highbd_convolve_horiz(const uint8_t *src8, ptrdiff_t src_stride,
+ uint8_t *dst8, ptrdiff_t dst_stride,
+ const InterpKernel *x_filters, int x0_q4,
+ int x_step_q4, int w, int h, int bd) {
+ int x, y;
+ uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
+ src -= SUBPEL_TAPS / 2 - 1;
+ for (y = 0; y < h; ++y) {
+ int x_q4 = x0_q4;
+ for (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];
+ int k, sum = 0;
+ for (k = 0; k < SUBPEL_TAPS; ++k) sum += src_x[k] * x_filter[k];
+ dst[x] = clip_pixel_highbd(ROUND_POWER_OF_TWO(sum, FILTER_BITS), bd);
+ x_q4 += x_step_q4;
+ }
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+static void highbd_convolve_avg_horiz(const uint8_t *src8, ptrdiff_t src_stride,
+ uint8_t *dst8, ptrdiff_t dst_stride,
+ const InterpKernel *x_filters, int x0_q4,
+ int x_step_q4, int w, int h, int bd) {
+ int x, y;
+ uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
+ src -= SUBPEL_TAPS / 2 - 1;
+ for (y = 0; y < h; ++y) {
+ int x_q4 = x0_q4;
+ for (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];
+ 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_highbd(ROUND_POWER_OF_TWO(sum, FILTER_BITS), bd),
+ 1);
+ x_q4 += x_step_q4;
+ }
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+static void highbd_convolve_vert(const uint8_t *src8, 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 bd) {
+ int x, y;
+ uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
+ src -= src_stride * (SUBPEL_TAPS / 2 - 1);
+ for (x = 0; x < w; ++x) {
+ int y_q4 = y0_q4;
+ for (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];
+ 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_highbd(ROUND_POWER_OF_TWO(sum, FILTER_BITS), bd);
+ y_q4 += y_step_q4;
+ }
+ ++src;
+ ++dst;
+ }
+}
+
+static void highbd_convolve_avg_vert(const uint8_t *src8, 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 bd) {
+ int x, y;
+ uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
+ src -= src_stride * (SUBPEL_TAPS / 2 - 1);
+ for (x = 0; x < w; ++x) {
+ int y_q4 = y0_q4;
+ for (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];
+ 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_highbd(ROUND_POWER_OF_TWO(sum, FILTER_BITS), bd),
+ 1);
+ y_q4 += y_step_q4;
+ }
+ ++src;
+ ++dst;
+ }
+}
+
+static void highbd_convolve(const uint8_t *src, ptrdiff_t src_stride,
+ uint8_t *dst, ptrdiff_t dst_stride,
+ const InterpKernel *const x_filters, int x0_q4,
+ int x_step_q4, const InterpKernel *const y_filters,
+ int y0_q4, int y_step_q4, int w, int h, int bd) {
+ // Note: Fixed size intermediate buffer, temp, places limits on parameters.
+ // 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 64x64 pixels.
+ // --64 rows in the downscaled frame span a distance of (64 - 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.
+ // --((64 - 1) * 32 + 15) >> 4 + 8 = 135.
+ uint16_t temp[MAX_EXT_SIZE * MAX_SB_SIZE];
+ 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);
+
+ highbd_convolve_horiz(src - src_stride * (SUBPEL_TAPS / 2 - 1), src_stride,
+ CONVERT_TO_BYTEPTR(temp), MAX_SB_SIZE, x_filters, x0_q4,
+ x_step_q4, w, intermediate_height, bd);
+ highbd_convolve_vert(
+ CONVERT_TO_BYTEPTR(temp) + MAX_SB_SIZE * (SUBPEL_TAPS / 2 - 1),
+ MAX_SB_SIZE, dst, dst_stride, y_filters, y0_q4, y_step_q4, w, h, bd);
+}
+
+void aom_highbd_convolve8_horiz_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 bd) {
+ const InterpKernel *const filters_x = get_filter_base(filter_x);
+ const int x0_q4 = get_filter_offset(filter_x, filters_x);
+ (void)filter_y;
+ (void)y_step_q4;
+
+ highbd_convolve_horiz(src, src_stride, dst, dst_stride, filters_x, x0_q4,
+ x_step_q4, w, h, bd);
+}
+
+void aom_highbd_convolve8_avg_horiz_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 bd) {
+ const InterpKernel *const filters_x = get_filter_base(filter_x);
+ const int x0_q4 = get_filter_offset(filter_x, filters_x);
+ (void)filter_y;
+ (void)y_step_q4;
+
+ highbd_convolve_avg_horiz(src, src_stride, dst, dst_stride, filters_x, x0_q4,
+ x_step_q4, w, h, bd);
+}
+
+void aom_highbd_convolve8_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_y, int y_step_q4, int w,
+ int h, int bd) {
+ const InterpKernel *const filters_y = get_filter_base(filter_y);
+ const int y0_q4 = get_filter_offset(filter_y, filters_y);
+ (void)filter_x;
+ (void)x_step_q4;
+
+ highbd_convolve_vert(src, src_stride, dst, dst_stride, filters_y, y0_q4,
+ y_step_q4, w, h, bd);
+}
+
+void aom_highbd_convolve8_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_y, int y_step_q4,
+ int w, int h, int bd) {
+ const InterpKernel *const filters_y = get_filter_base(filter_y);
+ const int y0_q4 = get_filter_offset(filter_y, filters_y);
+ (void)filter_x;
+ (void)x_step_q4;
+
+ highbd_convolve_avg_vert(src, src_stride, dst, dst_stride, filters_y, y0_q4,
+ y_step_q4, w, h, bd);
+}
+
+void aom_highbd_convolve8_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 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);
+
+ highbd_convolve(src, src_stride, dst, dst_stride, filters_x, x0_q4, x_step_q4,
+ filters_y, y0_q4, y_step_q4, w, h, bd);
+}
+
+void aom_highbd_convolve8_avg_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 bd) {
+ // Fixed size intermediate buffer places limits on parameters.
+ DECLARE_ALIGNED(16, uint16_t, temp[MAX_SB_SIZE * MAX_SB_SIZE]);
+ assert(w <= MAX_SB_SIZE);
+ assert(h <= MAX_SB_SIZE);
+
+ aom_highbd_convolve8_c(src, src_stride, CONVERT_TO_BYTEPTR(temp), MAX_SB_SIZE,
+ filter_x, x_step_q4, filter_y, y_step_q4, w, h, bd);
+ aom_highbd_convolve_avg_c(CONVERT_TO_BYTEPTR(temp), MAX_SB_SIZE, dst,
+ dst_stride, NULL, 0, NULL, 0, w, h, bd);
+}
+
+void aom_highbd_convolve_copy_c(const uint8_t *src8, ptrdiff_t src_stride,
+ uint8_t *dst8, ptrdiff_t 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 bd) {
+ int r;
+ uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
+ (void)filter_x;
+ (void)filter_y;
+ (void)filter_x_stride;
+ (void)filter_y_stride;
+ (void)bd;
+
+ for (r = h; r > 0; --r) {
+ memcpy(dst, src, w * sizeof(uint16_t));
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+void aom_highbd_convolve_avg_c(const uint8_t *src8, ptrdiff_t src_stride,
+ uint8_t *dst8, ptrdiff_t 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 bd) {
+ int x, y;
+ uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
+ (void)filter_x;
+ (void)filter_y;
+ (void)filter_x_stride;
+ (void)filter_y_stride;
+ (void)bd;
+
+ for (y = 0; y < h; ++y) {
+ for (x = 0; x < w; ++x) {
+ dst[x] = ROUND_POWER_OF_TWO(dst[x] + src[x], 1);
+ }
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+#if CONFIG_LOOP_RESTORATION
+static void highbd_convolve_add_src_horiz(const uint8_t *src8,
+ ptrdiff_t src_stride, uint8_t *dst8,
+ ptrdiff_t dst_stride,
+ const InterpKernel *x_filters,
+ int x0_q4, int x_step_q4, int w,
+ int h, int bd) {
+ int x, y;
+ uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
+ src -= SUBPEL_TAPS / 2 - 1;
+ for (y = 0; y < h; ++y) {
+ int x_q4 = x0_q4;
+ for (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];
+ int k, sum = 0;
+ for (k = 0; k < SUBPEL_TAPS; ++k) sum += src_x[k] * x_filter[k];
+ dst[x] = clip_pixel_highbd(
+ ROUND_POWER_OF_TWO(sum, FILTER_BITS) + src_x[SUBPEL_TAPS / 2 - 1],
+ bd);
+ x_q4 += x_step_q4;
+ }
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+static void highbd_convolve_add_src_vert(const uint8_t *src8,
+ 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 bd) {
+ int x, y;
+ uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
+ src -= src_stride * (SUBPEL_TAPS / 2 - 1);
+ for (x = 0; x < w; ++x) {
+ int y_q4 = y0_q4;
+ for (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];
+ 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_highbd(ROUND_POWER_OF_TWO(sum, FILTER_BITS) +
+ src_y[(SUBPEL_TAPS / 2 - 1) * src_stride],
+ bd);
+ y_q4 += y_step_q4;
+ }
+ ++src;
+ ++dst;
+ }
+}
+
+static void highbd_convolve_add_src(const uint8_t *src, ptrdiff_t src_stride,
+ uint8_t *dst, ptrdiff_t dst_stride,
+ const InterpKernel *const x_filters,
+ int x0_q4, int x_step_q4,
+ const InterpKernel *const y_filters,
+ int y0_q4, int y_step_q4, int w, int h,
+ int bd) {
+ // Note: Fixed size intermediate buffer, temp, places limits on parameters.
+ // 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 64x64 pixels.
+ // --64 rows in the downscaled frame span a distance of (64 - 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.
+ // --((64 - 1) * 32 + 15) >> 4 + 8 = 135.
+ uint16_t temp[MAX_EXT_SIZE * MAX_SB_SIZE];
+ 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);
+
+ highbd_convolve_add_src_horiz(src - src_stride * (SUBPEL_TAPS / 2 - 1),
+ src_stride, CONVERT_TO_BYTEPTR(temp),
+ MAX_SB_SIZE, x_filters, x0_q4, x_step_q4, w,
+ intermediate_height, bd);
+ highbd_convolve_add_src_vert(
+ CONVERT_TO_BYTEPTR(temp) + MAX_SB_SIZE * (SUBPEL_TAPS / 2 - 1),
+ MAX_SB_SIZE, dst, dst_stride, y_filters, y0_q4, y_step_q4, w, h, bd);
+}
+
+void aom_highbd_convolve8_add_src_horiz_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 bd) {
+ const InterpKernel *const filters_x = get_filter_base(filter_x);
+ const int x0_q4 = get_filter_offset(filter_x, filters_x);
+ (void)filter_y;
+ (void)y_step_q4;
+
+ highbd_convolve_add_src_horiz(src, src_stride, dst, dst_stride, filters_x,
+ x0_q4, x_step_q4, w, h, bd);
+}
+
+void aom_highbd_convolve8_add_src_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_y, int y_step_q4,
+ int w, int h, int bd) {
+ const InterpKernel *const filters_y = get_filter_base(filter_y);
+ const int y0_q4 = get_filter_offset(filter_y, filters_y);
+ (void)filter_x;
+ (void)x_step_q4;
+
+ highbd_convolve_add_src_vert(src, src_stride, dst, dst_stride, filters_y,
+ y0_q4, y_step_q4, w, h, bd);
+}
+
+void aom_highbd_convolve8_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, 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);
+
+ highbd_convolve_add_src(src, src_stride, dst, dst_stride, filters_x, x0_q4,
+ x_step_q4, filters_y, y0_q4, y_step_q4, w, h, bd);
+}
+#endif // CONFIG_LOOP_RESTORATION
+#endif // CONFIG_HIGHBITDEPTH