blob: 188b57f389805ea484cfcc18ad5b5c43b7ad1331 (
plain)
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
|
/*
* 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 "blockd.h"
void vp8_setup_block_dptrs(MACROBLOCKD *x) {
int r, c;
for (r = 0; r < 4; ++r) {
for (c = 0; c < 4; ++c) {
x->block[r * 4 + c].predictor = x->predictor + r * 4 * 16 + c * 4;
}
}
for (r = 0; r < 2; ++r) {
for (c = 0; c < 2; ++c) {
x->block[16 + r * 2 + c].predictor =
x->predictor + 256 + r * 4 * 8 + c * 4;
}
}
for (r = 0; r < 2; ++r) {
for (c = 0; c < 2; ++c) {
x->block[20 + r * 2 + c].predictor =
x->predictor + 320 + r * 4 * 8 + c * 4;
}
}
for (r = 0; r < 25; ++r) {
x->block[r].qcoeff = x->qcoeff + r * 16;
x->block[r].dqcoeff = x->dqcoeff + r * 16;
x->block[r].eob = x->eobs + r;
}
}
void vp8_build_block_doffsets(MACROBLOCKD *x) {
int block;
for (block = 0; block < 16; ++block) /* y blocks */
{
x->block[block].offset =
(block >> 2) * 4 * x->dst.y_stride + (block & 3) * 4;
}
for (block = 16; block < 20; ++block) /* U and V blocks */
{
x->block[block + 4].offset = x->block[block].offset =
((block - 16) >> 1) * 4 * x->dst.uv_stride + (block & 1) * 4;
}
}
|
