227 lines
6.4 KiB
C
227 lines
6.4 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_rtcd.h"
|
|
#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;
|
|
}
|
|
|
|
// src_diff: first pass, 9 bit, dynamic range [-255, 255]
|
|
// second pass, 12 bit, dynamic range [-2040, 2040]
|
|
static void hadamard_col8(const int16_t *src_diff, int src_stride,
|
|
int16_t *coeff) {
|
|
int16_t b0 = src_diff[0 * src_stride] + src_diff[1 * src_stride];
|
|
int16_t b1 = src_diff[0 * src_stride] - src_diff[1 * src_stride];
|
|
int16_t b2 = src_diff[2 * src_stride] + src_diff[3 * src_stride];
|
|
int16_t b3 = src_diff[2 * src_stride] - src_diff[3 * src_stride];
|
|
int16_t b4 = src_diff[4 * src_stride] + src_diff[5 * src_stride];
|
|
int16_t b5 = src_diff[4 * src_stride] - src_diff[5 * src_stride];
|
|
int16_t b6 = src_diff[6 * src_stride] + src_diff[7 * src_stride];
|
|
int16_t b7 = src_diff[6 * src_stride] - src_diff[7 * src_stride];
|
|
|
|
int16_t c0 = b0 + b2;
|
|
int16_t c1 = b1 + b3;
|
|
int16_t c2 = b0 - b2;
|
|
int16_t c3 = b1 - b3;
|
|
int16_t c4 = b4 + b6;
|
|
int16_t c5 = b5 + b7;
|
|
int16_t c6 = b4 - b6;
|
|
int16_t c7 = b5 - b7;
|
|
|
|
coeff[0] = c0 + c4;
|
|
coeff[7] = c1 + c5;
|
|
coeff[3] = c2 + c6;
|
|
coeff[4] = c3 + c7;
|
|
coeff[2] = c0 - c4;
|
|
coeff[6] = c1 - c5;
|
|
coeff[1] = c2 - c6;
|
|
coeff[5] = c3 - c7;
|
|
}
|
|
|
|
void vp9_hadamard_8x8_c(int16_t const *src_diff, int src_stride,
|
|
int16_t *coeff) {
|
|
int idx;
|
|
int16_t buffer[64];
|
|
int16_t *tmp_buf = &buffer[0];
|
|
for (idx = 0; idx < 8; ++idx) {
|
|
hadamard_col8(src_diff, src_stride, tmp_buf); // src_diff: 9 bit
|
|
// dynamic range [-255, 255]
|
|
tmp_buf += 8;
|
|
++src_diff;
|
|
}
|
|
|
|
tmp_buf = &buffer[0];
|
|
for (idx = 0; idx < 8; ++idx) {
|
|
hadamard_col8(tmp_buf, 8, coeff); // tmp_buf: 12 bit
|
|
// dynamic range [-2040, 2040]
|
|
coeff += 8; // coeff: 15 bit
|
|
// dynamic range [-16320, 16320]
|
|
++tmp_buf;
|
|
}
|
|
}
|
|
|
|
// In place 16x16 2D Hadamard transform
|
|
void vp9_hadamard_16x16_c(int16_t const *src_diff, int src_stride,
|
|
int16_t *coeff) {
|
|
int idx;
|
|
for (idx = 0; idx < 4; ++idx) {
|
|
// src_diff: 9 bit, dynamic range [-255, 255]
|
|
int16_t const *src_ptr = src_diff + (idx >> 1) * 8 * src_stride
|
|
+ (idx & 0x01) * 8;
|
|
vp9_hadamard_8x8_c(src_ptr, src_stride, coeff + idx * 64);
|
|
}
|
|
|
|
// coeff: 15 bit, dynamic range [-16320, 16320]
|
|
for (idx = 0; idx < 64; ++idx) {
|
|
int16_t a0 = coeff[0];
|
|
int16_t a1 = coeff[64];
|
|
int16_t a2 = coeff[128];
|
|
int16_t a3 = coeff[192];
|
|
|
|
int16_t b0 = (a0 + a1) >> 1; // (a0 + a1): 16 bit, [-32640, 32640]
|
|
int16_t b1 = (a0 - a1) >> 1; // b0-b3: 15 bit, dynamic range
|
|
int16_t b2 = (a2 + a3) >> 1; // [-16320, 16320]
|
|
int16_t b3 = (a2 - a3) >> 1;
|
|
|
|
coeff[0] = b0 + b2; // 16 bit, [-32640, 32640]
|
|
coeff[64] = b1 + b3;
|
|
coeff[128] = b0 - b2;
|
|
coeff[192] = b1 - b3;
|
|
|
|
++coeff;
|
|
}
|
|
}
|
|
|
|
// coeff: 16 bits, dynamic range [-32640, 32640].
|
|
// length: value range {16, 64, 256, 1024}.
|
|
int16_t vp9_satd_c(const int16_t *coeff, int length) {
|
|
int i;
|
|
int satd = 0;
|
|
for (i = 0; i < length; ++i)
|
|
satd += abs(coeff[i]);
|
|
|
|
// satd: 26 bits, dynamic range [-32640 * 1024, 32640 * 1024]
|
|
return (int16_t)satd;
|
|
}
|
|
|
|
// Integer projection onto row vectors.
|
|
// height: value range {16, 32, 64}.
|
|
void vp9_int_pro_row_c(int16_t hbuf[16], uint8_t const *ref,
|
|
const int ref_stride, const int height) {
|
|
int idx;
|
|
const int norm_factor = height >> 1;
|
|
for (idx = 0; idx < 16; ++idx) {
|
|
int i;
|
|
hbuf[idx] = 0;
|
|
// hbuf[idx]: 14 bit, dynamic range [0, 16320].
|
|
for (i = 0; i < height; ++i)
|
|
hbuf[idx] += ref[i * ref_stride];
|
|
// hbuf[idx]: 9 bit, dynamic range [0, 510].
|
|
hbuf[idx] /= norm_factor;
|
|
++ref;
|
|
}
|
|
}
|
|
|
|
// width: value range {16, 32, 64}.
|
|
int16_t vp9_int_pro_col_c(uint8_t const *ref, const int width) {
|
|
int idx;
|
|
int16_t sum = 0;
|
|
// sum: 14 bit, dynamic range [0, 16320]
|
|
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;
|
|
}
|
|
|
|
void vp9_minmax_8x8_c(const uint8_t *s, int p, const uint8_t *d, int dp,
|
|
int *min, int *max) {
|
|
int i, j;
|
|
*min = 255;
|
|
*max = 0;
|
|
for (i = 0; i < 8; ++i, s += p, d += dp) {
|
|
for (j = 0; j < 8; ++j) {
|
|
int diff = abs(s[j]-d[j]);
|
|
*min = diff < *min ? diff : *min;
|
|
*max = diff > *max ? diff : *max;
|
|
}
|
|
}
|
|
}
|
|
|
|
#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;
|
|
}
|
|
|
|
void vp9_highbd_minmax_8x8_c(const uint8_t *s8, int p, const uint8_t *d8,
|
|
int dp, int *min, int *max) {
|
|
int i, j;
|
|
const uint16_t* s = CONVERT_TO_SHORTPTR(s8);
|
|
const uint16_t* d = CONVERT_TO_SHORTPTR(d8);
|
|
*min = 255;
|
|
*max = 0;
|
|
for (i = 0; i < 8; ++i, s += p, d += dp) {
|
|
for (j = 0; j < 8; ++j) {
|
|
int diff = abs(s[j]-d[j]);
|
|
*min = diff < *min ? diff : *min;
|
|
*max = diff > *max ? diff : *max;
|
|
}
|
|
}
|
|
}
|
|
#endif // CONFIG_VP9_HIGHBITDEPTH
|
|
|
|
|