1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/*
* Copyright (c) 2018, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. 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 www.aomedia.org/license/patent.
*/
#include <assert.h>
#include <stdlib.h>
#include <math.h>
#include "config/av1_rtcd.h"
#include "av1/encoder/dwt.h"
// Note: block length must be even for this implementation
static void analysis_53_row(int length, tran_low_t *x, tran_low_t *lowpass,
tran_low_t *highpass) {
int n;
tran_low_t r, *a, *b;
n = length >> 1;
b = highpass;
a = lowpass;
while (--n) {
*a++ = (r = *x++) * 2;
*b++ = *x - ((r + x[1] + 1) >> 1);
x++;
}
*a = (r = *x++) * 2;
*b = *x - r;
n = length >> 1;
b = highpass;
a = lowpass;
r = *highpass;
while (n--) {
*a++ += (r + (*b) + 1) >> 1;
r = *b++;
}
}
static void analysis_53_col(int length, tran_low_t *x, tran_low_t *lowpass,
tran_low_t *highpass) {
int n;
tran_low_t r, *a, *b;
n = length >> 1;
b = highpass;
a = lowpass;
while (--n) {
*a++ = (r = *x++);
*b++ = (((*x) * 2) - (r + x[1]) + 2) >> 2;
x++;
}
*a = (r = *x++);
*b = (*x - r + 1) >> 1;
n = length >> 1;
b = highpass;
a = lowpass;
r = *highpass;
while (n--) {
*a++ += (r + (*b) + 1) >> 1;
r = *b++;
}
}
static void dyadic_analyze_53_uint8_input(int levels, int width, int height,
uint8_t *x, int pitch_x,
tran_low_t *c, int pitch_c,
int dwt_scale_bits, int hbd) {
int lv, i, j, nh, nw, hh = height, hw = width;
tran_low_t buffer[2 * DWT_MAX_LENGTH];
if (hbd) {
uint16_t *x16 = CONVERT_TO_SHORTPTR(x);
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
c[i * pitch_c + j] = x16[i * pitch_x + j] << dwt_scale_bits;
}
}
} else {
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
c[i * pitch_c + j] = x[i * pitch_x + j] << dwt_scale_bits;
}
}
}
for (lv = 0; lv < levels; lv++) {
nh = hh;
hh = (hh + 1) >> 1;
nw = hw;
hw = (hw + 1) >> 1;
if ((nh < 2) || (nw < 2)) return;
for (i = 0; i < nh; i++) {
memcpy(buffer, &c[i * pitch_c], nw * sizeof(tran_low_t));
analysis_53_row(nw, buffer, &c[i * pitch_c], &c[i * pitch_c] + hw);
}
for (j = 0; j < nw; j++) {
for (i = 0; i < nh; i++) buffer[i + nh] = c[i * pitch_c + j];
analysis_53_col(nh, buffer + nh, buffer, buffer + hh);
for (i = 0; i < nh; i++) c[i * pitch_c + j] = buffer[i];
}
}
}
void av1_fdwt8x8_uint8_input_c(uint8_t *input, tran_low_t *output, int stride,
int hbd) {
dyadic_analyze_53_uint8_input(4, 8, 8, input, stride, output, 8, 2, hbd);
}
int av1_haar_ac_sad(tran_low_t *output, int bw, int bh, int stride) {
int acsad = 0;
for (int r = 0; r < bh; ++r)
for (int c = 0; c < bw; ++c) {
if (r >= bh / 2 || c >= bw / 2) acsad += abs(output[r * stride + c]);
}
return acsad;
}
uint64_t av1_dct_ac_sad(tran_low_t *output, int bw, int bh, int stride) {
uint64_t acsad = 0;
for (int r = 0; r < bh; ++r)
for (int c = 0; c < bw; ++c) {
if (r > 0 || c > 0) acsad += abs(output[r * stride + c]);
}
return acsad;
}
uint32_t av1_variance(uint8_t *input, int bw, int bh, int stride) {
int sum = 0;
uint32_t sse = 0;
for (int r = 0; r < bh; ++r)
for (int c = 0; c < bw; ++c) {
sum += input[r * stride + c];
sse += input[r * stride + c] * input[r * stride + c];
}
return sse - (uint32_t)(((int64_t)sum * sum) / (bw * bh));
}
int av1_haar_ac_sad_8x8_uint8_input(uint8_t *input, int stride, int hbd) {
tran_low_t output[64];
av1_fdwt8x8_uint8_input_c(input, output, stride, hbd);
return av1_haar_ac_sad(output, 8, 8, 8);
}
|
