| /* |
| * 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_config.h" |
| #include "config/aom_dsp_rtcd.h" |
| |
| #include "aom/aom_integer.h" |
| #include "aom_dsp/aom_dsp_common.h" |
| #include "aom_dsp/aom_filter.h" |
| #include "aom_ports/mem.h" |
| |
| 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 vert_scalar_product(const uint8_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 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) { |
| 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 sum = horz_scalar_product(src_x, x_filter); |
| 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_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) { |
| 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 unsigned char *src_y = &src[(y_q4 >> SUBPEL_BITS) * src_stride]; |
| const int16_t *const y_filter = y_filters[y_q4 & SUBPEL_MASK]; |
| const int sum = vert_scalar_product(src_y, src_stride, y_filter); |
| dst[y * dst_stride] = clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS)); |
| y_q4 += y_step_q4; |
| } |
| ++src; |
| ++dst; |
| } |
| } |
| |
| 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_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_convolve_copy_c(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst, |
| ptrdiff_t dst_stride, int w, int h) { |
| for (int y = 0; y < h; ++y) { |
| memmove(dst, src, w * sizeof(src[0])); |
| src += src_stride; |
| dst += dst_stride; |
| } |
| } |
| |
| 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 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 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) { |
| uint16_t *src = CONVERT_TO_SHORTPTR(src8); |
| uint16_t *dst = CONVERT_TO_SHORTPTR(dst8); |
| 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 sum = highbd_horz_scalar_product(src_x, x_filter); |
| 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_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) { |
| uint16_t *src = CONVERT_TO_SHORTPTR(src8); |
| 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 sum = highbd_vert_scalar_product(src_y, src_stride, y_filter); |
| dst[y * dst_stride] = |
| clip_pixel_highbd(ROUND_POWER_OF_TWO(sum, FILTER_BITS), bd); |
| y_q4 += y_step_q4; |
| } |
| ++src; |
| ++dst; |
| } |
| } |
| |
| 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_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_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; |
| } |
| } |