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
|
/*
* Copyright (c) 2010 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 "vpx_config.h"
#include "vp8_rtcd.h"
#include "vpx_mem/vpx_mem.h"
void vp8_dequant_idct_add_y_block_c(short *q, short *dq, unsigned char *dst,
int stride, char *eobs) {
int i, j;
for (i = 0; i < 4; ++i) {
for (j = 0; j < 4; ++j) {
if (*eobs++ > 1) {
vp8_dequant_idct_add_c(q, dq, dst, stride);
} else {
vp8_dc_only_idct_add_c(q[0] * dq[0], dst, stride, dst, stride);
memset(q, 0, 2 * sizeof(q[0]));
}
q += 16;
dst += 4;
}
dst += 4 * stride - 16;
}
}
void vp8_dequant_idct_add_uv_block_c(short *q, short *dq, unsigned char *dst_u,
unsigned char *dst_v, int stride,
char *eobs) {
int i, j;
for (i = 0; i < 2; ++i) {
for (j = 0; j < 2; ++j) {
if (*eobs++ > 1) {
vp8_dequant_idct_add_c(q, dq, dst_u, stride);
} else {
vp8_dc_only_idct_add_c(q[0] * dq[0], dst_u, stride, dst_u, stride);
memset(q, 0, 2 * sizeof(q[0]));
}
q += 16;
dst_u += 4;
}
dst_u += 4 * stride - 8;
}
for (i = 0; i < 2; ++i) {
for (j = 0; j < 2; ++j) {
if (*eobs++ > 1) {
vp8_dequant_idct_add_c(q, dq, dst_v, stride);
} else {
vp8_dc_only_idct_add_c(q[0] * dq[0], dst_v, stride, dst_v, stride);
memset(q, 0, 2 * sizeof(q[0]));
}
q += 16;
dst_v += 4;
}
dst_v += 4 * stride - 8;
}
}
|
