| /* |
| * Copyright (c) 2021, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 3-Clause Clear License |
| * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear |
| * License was not distributed with this source code in the LICENSE file, you |
| * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. 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 |
| * aomedia.org/license/patent-license/. |
| */ |
| |
| #include <assert.h> |
| |
| #include "config/aom_dsp_rtcd.h" |
| |
| uint64_t aom_sum_squares_2d_i16_c(const int16_t *src, int src_stride, int width, |
| int height) { |
| int r, c; |
| uint64_t ss = 0; |
| |
| for (r = 0; r < height; r++) { |
| for (c = 0; c < width; c++) { |
| const int16_t v = src[c]; |
| ss += v * v; |
| } |
| src += src_stride; |
| } |
| |
| return ss; |
| } |
| |
| uint64_t aom_sum_squares_i16_c(const int16_t *src, uint32_t n) { |
| uint64_t ss = 0; |
| do { |
| const int16_t v = *src++; |
| ss += v * v; |
| } while (--n); |
| |
| return ss; |
| } |
| |
| uint64_t aom_var_2d_u8_c(uint8_t *src, int src_stride, int width, int height) { |
| int r, c; |
| uint64_t ss = 0, s = 0; |
| |
| for (r = 0; r < height; r++) { |
| for (c = 0; c < width; c++) { |
| const uint8_t v = src[c]; |
| ss += v * v; |
| s += v; |
| } |
| src += src_stride; |
| } |
| |
| return (ss - s * s / (width * height)); |
| } |
| |
| uint64_t aom_var_2d_u16_c(uint8_t *src, int src_stride, int width, int height) { |
| uint16_t *srcp = CONVERT_TO_SHORTPTR(src); |
| int r, c; |
| uint64_t ss = 0, s = 0; |
| |
| for (r = 0; r < height; r++) { |
| for (c = 0; c < width; c++) { |
| const uint16_t v = srcp[c]; |
| ss += v * v; |
| s += v; |
| } |
| srcp += src_stride; |
| } |
| |
| return (ss - s * s / (width * height)); |
| } |
| |
| uint64_t aom_sum_sse_2d_i16_c(const int16_t *src, int src_stride, int width, |
| int height, int *sum) { |
| int r, c; |
| int16_t *srcp = (int16_t *)src; |
| int64_t ss = 0; |
| |
| for (r = 0; r < height; r++) { |
| for (c = 0; c < width; c++) { |
| const int16_t v = srcp[c]; |
| ss += v * v; |
| *sum += v; |
| } |
| srcp += src_stride; |
| } |
| return ss; |
| } |