media/libvpx/vp8/common/invtrans.h@ac0c01689b40 (annotated)
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.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license |
| michael@0 | 5 | * that can be found in the LICENSE file in the root of the source |
| michael@0 | 6 | * tree. An additional intellectual property rights grant can be found |
| michael@0 | 7 | * in the file PATENTS. All contributing project authors may |
| michael@0 | 8 | * be found in the AUTHORS file in the root of the source tree. |
| michael@0 | 9 | */ |
| michael@0 | 10 | |
| michael@0 | 11 | |
| michael@0 | 12 | #ifndef __INC_INVTRANS_H |
| michael@0 | 13 | #define __INC_INVTRANS_H |
| michael@0 | 14 | |
| michael@0 | 15 | #include "vpx_config.h" |
| michael@0 | 16 | #include "vp8_rtcd.h" |
| michael@0 | 17 | #include "blockd.h" |
| michael@0 | 18 | #include "onyxc_int.h" |
| michael@0 | 19 | |
| michael@0 | 20 | #if CONFIG_MULTITHREAD |
| michael@0 | 21 | #include "vpx_mem/vpx_mem.h" |
| michael@0 | 22 | #endif |
| michael@0 | 23 | |
| michael@0 | 24 | static void eob_adjust(char *eobs, short *diff) |
| michael@0 | 25 | { |
| michael@0 | 26 | /* eob adjust.... the idct can only skip if both the dc and eob are zero */ |
| michael@0 | 27 | int js; |
| michael@0 | 28 | for(js = 0; js < 16; js++) |
| michael@0 | 29 | { |
| michael@0 | 30 | if((eobs[js] == 0) && (diff[0] != 0)) |
| michael@0 | 31 | eobs[js]++; |
| michael@0 | 32 | diff+=16; |
| michael@0 | 33 | } |
| michael@0 | 34 | } |
| michael@0 | 35 | |
| michael@0 | 36 | static void vp8_inverse_transform_mby(MACROBLOCKD *xd) |
| michael@0 | 37 | { |
| michael@0 | 38 | short *DQC = xd->dequant_y1; |
| michael@0 | 39 | |
| michael@0 | 40 | if (xd->mode_info_context->mbmi.mode != SPLITMV) |
| michael@0 | 41 | { |
| michael@0 | 42 | /* do 2nd order transform on the dc block */ |
| michael@0 | 43 | if (xd->eobs[24] > 1) |
| michael@0 | 44 | { |
| michael@0 | 45 | vp8_short_inv_walsh4x4 |
| michael@0 | 46 | (&xd->block[24].dqcoeff[0], xd->qcoeff); |
| michael@0 | 47 | } |
| michael@0 | 48 | else |
| michael@0 | 49 | { |
| michael@0 | 50 | vp8_short_inv_walsh4x4_1 |
| michael@0 | 51 | (&xd->block[24].dqcoeff[0], xd->qcoeff); |
| michael@0 | 52 | } |
| michael@0 | 53 | eob_adjust(xd->eobs, xd->qcoeff); |
| michael@0 | 54 | |
| michael@0 | 55 | DQC = xd->dequant_y1_dc; |
| michael@0 | 56 | } |
| michael@0 | 57 | vp8_dequant_idct_add_y_block |
| michael@0 | 58 | (xd->qcoeff, DQC, |
| michael@0 | 59 | xd->dst.y_buffer, |
| michael@0 | 60 | xd->dst.y_stride, xd->eobs); |
| michael@0 | 61 | } |
| michael@0 | 62 | #endif |
