media/libvpx/vp8/common/invtrans.h@ac0c01689b40
media/libvpx/vp8/common/invtrans.h
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 #ifndef __INC_INVTRANS_H
13 #define __INC_INVTRANS_H
15 #include "vpx_config.h"
16 #include "vp8_rtcd.h"
17 #include "blockd.h"
18 #include "onyxc_int.h"
20 #if CONFIG_MULTITHREAD
21 #include "vpx_mem/vpx_mem.h"
22 #endif
24 static void eob_adjust(char *eobs, short *diff)
25 {
26 /* eob adjust.... the idct can only skip if both the dc and eob are zero */
27 int js;
28 for(js = 0; js < 16; js++)
29 {
30 if((eobs[js] == 0) && (diff[0] != 0))
31 eobs[js]++;
32 diff+=16;
33 }
34 }
36 static void vp8_inverse_transform_mby(MACROBLOCKD *xd)
37 {
38 short *DQC = xd->dequant_y1;
40 if (xd->mode_info_context->mbmi.mode != SPLITMV)
41 {
42 /* do 2nd order transform on the dc block */
43 if (xd->eobs[24] > 1)
44 {
45 vp8_short_inv_walsh4x4
46 (&xd->block[24].dqcoeff[0], xd->qcoeff);
47 }
48 else
49 {
50 vp8_short_inv_walsh4x4_1
51 (&xd->block[24].dqcoeff[0], xd->qcoeff);
52 }
53 eob_adjust(xd->eobs, xd->qcoeff);
55 DQC = xd->dequant_y1_dc;
56 }
57 vp8_dequant_idct_add_y_block
58 (xd->qcoeff, DQC,
59 xd->dst.y_buffer,
60 xd->dst.y_stride, xd->eobs);
61 }
62 #endif
