c932584f0f
Make the C and SSE2 versions consistent. Change-Id: I03c405d22a36bd1a97480efb96dc5af230667424
93 lines
2.3 KiB
C
93 lines
2.3 KiB
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;
|
|
}
|
|
|
|
// Integer projection onto row vectors.
|
|
void vp9_int_pro_row_c(int16_t *hbuf, uint8_t const *ref,
|
|
const int ref_stride, const int height) {
|
|
int idx;
|
|
const int norm_factor = MAX(8, height >> 1);
|
|
for (idx = 0; idx < 16; ++idx) {
|
|
int i;
|
|
hbuf[idx] = 0;
|
|
for (i = 0; i < height; ++i)
|
|
hbuf[idx] += ref[i * ref_stride];
|
|
hbuf[idx] /= norm_factor;
|
|
++ref;
|
|
}
|
|
}
|
|
|
|
int16_t vp9_int_pro_col_c(uint8_t const *ref, const int width) {
|
|
int idx;
|
|
int16_t sum = 0;
|
|
for (idx = 0; idx < width; ++idx)
|
|
sum += ref[idx];
|
|
return sum;
|
|
}
|
|
|
|
int vp9_vector_var_c(int16_t const *ref, int16_t const *src,
|
|
const int bwl) {
|
|
int i;
|
|
int width = 4 << bwl;
|
|
int sse = 0, mean = 0, var;
|
|
|
|
for (i = 0; i < width; ++i) {
|
|
int diff = ref[i] - src[i];
|
|
mean += diff;
|
|
sse += diff * diff;
|
|
}
|
|
|
|
var = sse - ((mean * mean) >> (bwl + 2));
|
|
return var;
|
|
}
|
|
|
|
#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
|
|
|
|
|