media/libvpx/vp8/common/mbpitch.c@ac0c01689b40
media/libvpx/vp8/common/mbpitch.c
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
12 #include "blockd.h"
14 void vp8_setup_block_dptrs(MACROBLOCKD *x)
15 {
16 int r, c;
18 for (r = 0; r < 4; r++)
19 {
20 for (c = 0; c < 4; c++)
21 {
22 x->block[r*4+c].predictor = x->predictor + r * 4 * 16 + c * 4;
23 }
24 }
26 for (r = 0; r < 2; r++)
27 {
28 for (c = 0; c < 2; c++)
29 {
30 x->block[16+r*2+c].predictor = x->predictor + 256 + r * 4 * 8 + c * 4;
32 }
33 }
35 for (r = 0; r < 2; r++)
36 {
37 for (c = 0; c < 2; c++)
38 {
39 x->block[20+r*2+c].predictor = x->predictor + 320 + r * 4 * 8 + c * 4;
41 }
42 }
44 for (r = 0; r < 25; r++)
45 {
46 x->block[r].qcoeff = x->qcoeff + r * 16;
47 x->block[r].dqcoeff = x->dqcoeff + r * 16;
48 x->block[r].eob = x->eobs + r;
49 }
50 }
52 void vp8_build_block_doffsets(MACROBLOCKD *x)
53 {
54 int block;
56 for (block = 0; block < 16; block++) /* y blocks */
57 {
58 x->block[block].offset =
59 (block >> 2) * 4 * x->dst.y_stride + (block & 3) * 4;
60 }
62 for (block = 16; block < 20; block++) /* U and V blocks */
63 {
64 x->block[block+4].offset =
65 x->block[block].offset =
66 ((block - 16) >> 1) * 4 * x->dst.uv_stride + (block & 1) * 4;
67 }
68 }
