ref: f92c0b16888dfcc07829dc18c779ec84f69ab5d8
dir: /vp9/encoder/vp9_avg.c/
/*
* Copyright (c) 2014 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 "vp9/common/vp9_common.h"
#include "vpx_ports/mem.h"
unsigned int vp9_avg_8x8_c(const uint8_t *s, int p) {
int i, j;
int sum = 0;
for (i = 0; i < 8; ++i, s+=p)
for (j = 0; j < 8; sum += s[j], ++j) {}
return (sum + 32) >> 6;
}
unsigned int vp9_avg_4x4_c(const uint8_t *s, int p) {
int i, j;
int sum = 0;
for (i = 0; i < 4; ++i, s+=p)
for (j = 0; j < 4; sum += s[j], ++j) {}
return (sum + 8) >> 4;
}
#if CONFIG_VP9_HIGHBITDEPTH
unsigned int vp9_highbd_avg_8x8_c(const uint8_t *s8, int p) {
int i, j;
int sum = 0;
const uint16_t* s = CONVERT_TO_SHORTPTR(s8);
for (i = 0; i < 8; ++i, s+=p)
for (j = 0; j < 8; sum += s[j], ++j) {}
return (sum + 32) >> 6;
}
unsigned int vp9_highbd_avg_4x4_c(const uint8_t *s8, int p) {
int i, j;
int sum = 0;
const uint16_t* s = CONVERT_TO_SHORTPTR(s8);
for (i = 0; i < 4; ++i, s+=p)
for (j = 0; j < 4; sum += s[j], ++j) {}
return (sum + 8) >> 4;
}
#endif // CONFIG_VP9_HIGHBITDEPTH