ref: fc5ab625b5f8daa7f9f10667ca022fd404a71f61
dir: libvpx/vpx_dsp/sad.c
/*
* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <stdlib.h>
#include "./vpx_config.h"
#include "./vpx_dsp_rtcd.h"
#include "vpx/vpx_integer.h"
#include "vpx_ports/mem.h"
/* Sum the difference between every corresponding element of the buffers. */
static INLINE unsigned int sad(const uint8_t *src_ptr, int src_stride,
const uint8_t *ref_ptr, int ref_stride,
int width, int height) {
int y, x;
unsigned int sad = 0;
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) sad += abs(src_ptr[x] - ref_ptr[x]);
src_ptr += src_stride;
ref_ptr += ref_stride;
}
return sad;
}
#define sadMxN(m, n) \
unsigned int vpx_sad##m##x##n##_c(const uint8_t *src_ptr, int src_stride, \
const uint8_t *ref_ptr, int ref_stride) { \
return sad(src_ptr, src_stride, ref_ptr, ref_stride, m, n); \
} \
unsigned int vpx_sad##m##x##n##_avg_c( \
const uint8_t *src_ptr, int src_stride, const uint8_t *ref_ptr, \
int ref_stride, const uint8_t *second_pred) { \
DECLARE_ALIGNED(16, uint8_t, comp_pred[m * n]); \
vpx_comp_avg_pred_c(comp_pred, second_pred, m, n, ref_ptr, ref_stride); \
return sad(src_ptr, src_stride, comp_pred, m, m, n); \
}
// depending on call sites, pass **ref_array to avoid & in subsequent call and
// de-dup with 4D below.
#define sadMxNxK(m, n, k) \
void vpx_sad##m##x##n##x##k##_c(const uint8_t *src_ptr, int src_stride, \
const uint8_t *ref_ptr, int ref_stride, \
uint32_t *sad_array) { \
int i; \
for (i = 0; i < k; ++i) \
sad_array[i] = \
vpx_sad##m##x##n##_c(src_ptr, src_stride, &ref_ptr[i], ref_stride); \
}
// This appears to be equivalent to the above when k == 4 and refs is const
#define sadMxNx4D(m, n) \
void vpx_sad##m##x##n##x4d_c(const uint8_t *src_ptr, int src_stride, \
const uint8_t *const ref_array[], \
int ref_stride, uint32_t *sad_array) { \
int i; \
for (i = 0; i < 4; ++i) \
sad_array[i] = \
vpx_sad##m##x##n##_c(src_ptr, src_stride, ref_array[i], ref_stride); \
}
/* clang-format off */
// 64x64
sadMxN(64, 64)
sadMxNx4D(64, 64)
// 64x32
sadMxN(64, 32)
sadMxNx4D(64, 32)
// 32x64
sadMxN(32, 64)
sadMxNx4D(32, 64)
// 32x32
sadMxN(32, 32)
sadMxNxK(32, 32, 8)
sadMxNx4D(32, 32)
// 32x16
sadMxN(32, 16)
sadMxNx4D(32, 16)
// 16x32
sadMxN(16, 32)
sadMxNx4D(16, 32)
// 16x16
sadMxN(16, 16)
sadMxNxK(16, 16, 3)
sadMxNxK(16, 16, 8)
sadMxNx4D(16, 16)
// 16x8
sadMxN(16, 8)
sadMxNxK(16, 8, 3)
sadMxNxK(16, 8, 8)
sadMxNx4D(16, 8)
// 8x16
sadMxN(8, 16)
sadMxNxK(8, 16, 3)
sadMxNxK(8, 16, 8)
sadMxNx4D(8, 16)
// 8x8
sadMxN(8, 8)
sadMxNxK(8, 8, 3)
sadMxNxK(8, 8, 8)
sadMxNx4D(8, 8)
// 8x4
sadMxN(8, 4)
sadMxNx4D(8, 4)
// 4x8
sadMxN(4, 8)
sadMxNx4D(4, 8)
// 4x4
sadMxN(4, 4)
sadMxNxK(4, 4, 3)
sadMxNxK(4, 4, 8)
sadMxNx4D(4, 4)
/* clang-format on */
#if CONFIG_VP9_HIGHBITDEPTH
static INLINE
unsigned int highbd_sad(const uint8_t *src8_ptr, int src_stride,
const uint8_t *ref8_ptr, int ref_stride, int width,
int height) {
int y, x;
unsigned int sad = 0;
const uint16_t *src = CONVERT_TO_SHORTPTR(src8_ptr);
const uint16_t *ref_ptr = CONVERT_TO_SHORTPTR(ref8_ptr);
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) sad += abs(src[x] - ref_ptr[x]);
src += src_stride;
ref_ptr += ref_stride;
}
return sad;
}
static INLINE unsigned int highbd_sadb(const uint8_t *src8_ptr, int src_stride,
const uint16_t *ref_ptr, int ref_stride,
int width, int height) {
int y, x;
unsigned int sad = 0;
const uint16_t *src = CONVERT_TO_SHORTPTR(src8_ptr);
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) sad += abs(src[x] - ref_ptr[x]);
src += src_stride;
ref_ptr += ref_stride;
}
return sad;
}
#define highbd_sadMxN(m, n) \
unsigned int vpx_highbd_sad##m##x##n##_c( \
const uint8_t *src_ptr, int src_stride, const uint8_t *ref_ptr, \
int ref_stride) { \
return highbd_sad(src_ptr, src_stride, ref_ptr, ref_stride, m, n); \
} \
unsigned int vpx_highbd_sad##m##x##n##_avg_c( \
const uint8_t *src_ptr, int src_stride, const uint8_t *ref_ptr, \
int ref_stride, const uint8_t *second_pred) { \
DECLARE_ALIGNED(16, uint16_t, comp_pred[m * n]); \
vpx_highbd_comp_avg_pred_c(comp_pred, CONVERT_TO_SHORTPTR(second_pred), m, \
n, CONVERT_TO_SHORTPTR(ref_ptr), ref_stride); \
return highbd_sadb(src_ptr, src_stride, comp_pred, m, m, n); \
}
#define highbd_sadMxNx4D(m, n) \
void vpx_highbd_sad##m##x##n##x4d_c(const uint8_t *src_ptr, int src_stride, \
const uint8_t *const ref_array[], \
int ref_stride, uint32_t *sad_array) { \
int i; \
for (i = 0; i < 4; ++i) { \
sad_array[i] = vpx_highbd_sad##m##x##n##_c(src_ptr, src_stride, \
ref_array[i], ref_stride); \
} \
}
/* clang-format off */
// 64x64
highbd_sadMxN(64, 64)
highbd_sadMxNx4D(64, 64)
// 64x32
highbd_sadMxN(64, 32)
highbd_sadMxNx4D(64, 32)
// 32x64
highbd_sadMxN(32, 64)
highbd_sadMxNx4D(32, 64)
// 32x32
highbd_sadMxN(32, 32)
highbd_sadMxNx4D(32, 32)
// 32x16
highbd_sadMxN(32, 16)
highbd_sadMxNx4D(32, 16)
// 16x32
highbd_sadMxN(16, 32)
highbd_sadMxNx4D(16, 32)
// 16x16
highbd_sadMxN(16, 16)
highbd_sadMxNx4D(16, 16)
// 16x8
highbd_sadMxN(16, 8)
highbd_sadMxNx4D(16, 8)
// 8x16
highbd_sadMxN(8, 16)
highbd_sadMxNx4D(8, 16)
// 8x8
highbd_sadMxN(8, 8)
highbd_sadMxNx4D(8, 8)
// 8x4
highbd_sadMxN(8, 4)
highbd_sadMxNx4D(8, 4)
// 4x8
highbd_sadMxN(4, 8)
highbd_sadMxNx4D(4, 8)
// 4x4
highbd_sadMxN(4, 4)
highbd_sadMxNx4D(4, 4)
/* clang-format on */
#endif // CONFIG_VP9_HIGHBITDEPTH