gfx/skia/trunk/src/lazy/SkCachingPixelRef.cpp@129ffea94266 (annotated)
gfx/skia/trunk/src/lazy/SkCachingPixelRef.cpp
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2013 Google Inc. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 5 | * found in the LICENSE file. |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "SkCachingPixelRef.h" |
| michael@0 | 9 | #include "SkScaledImageCache.h" |
| michael@0 | 10 | |
| michael@0 | 11 | bool SkCachingPixelRef::Install(SkImageGenerator* generator, |
| michael@0 | 12 | SkBitmap* dst) { |
| michael@0 | 13 | SkImageInfo info; |
| michael@0 | 14 | SkASSERT(dst != NULL); |
| michael@0 | 15 | if ((NULL == generator) |
| michael@0 | 16 | || !(generator->getInfo(&info)) |
| michael@0 | 17 | || !dst->setConfig(info, 0)) { |
| michael@0 | 18 | SkDELETE(generator); |
| michael@0 | 19 | return false; |
| michael@0 | 20 | } |
| michael@0 | 21 | SkAutoTUnref<SkCachingPixelRef> ref(SkNEW_ARGS(SkCachingPixelRef, |
| michael@0 | 22 | (info, generator, dst->rowBytes()))); |
| michael@0 | 23 | dst->setPixelRef(ref); |
| michael@0 | 24 | return true; |
| michael@0 | 25 | } |
| michael@0 | 26 | |
| michael@0 | 27 | SkCachingPixelRef::SkCachingPixelRef(const SkImageInfo& info, |
| michael@0 | 28 | SkImageGenerator* generator, |
| michael@0 | 29 | size_t rowBytes) |
| michael@0 | 30 | : INHERITED(info) |
| michael@0 | 31 | , fImageGenerator(generator) |
| michael@0 | 32 | , fErrorInDecoding(false) |
| michael@0 | 33 | , fScaledCacheId(NULL) |
| michael@0 | 34 | , fRowBytes(rowBytes) { |
| michael@0 | 35 | SkASSERT(fImageGenerator != NULL); |
| michael@0 | 36 | } |
| michael@0 | 37 | SkCachingPixelRef::~SkCachingPixelRef() { |
| michael@0 | 38 | SkDELETE(fImageGenerator); |
| michael@0 | 39 | SkASSERT(NULL == fScaledCacheId); |
| michael@0 | 40 | // Assert always unlock before unref. |
| michael@0 | 41 | } |
| michael@0 | 42 | |
| michael@0 | 43 | bool SkCachingPixelRef::onNewLockPixels(LockRec* rec) { |
| michael@0 | 44 | if (fErrorInDecoding) { |
| michael@0 | 45 | return false; // don't try again. |
| michael@0 | 46 | } |
| michael@0 | 47 | |
| michael@0 | 48 | const SkImageInfo& info = this->info(); |
| michael@0 | 49 | SkBitmap bitmap; |
| michael@0 | 50 | SkASSERT(NULL == fScaledCacheId); |
| michael@0 | 51 | fScaledCacheId = SkScaledImageCache::FindAndLock(this->getGenerationID(), |
| michael@0 | 52 | info.fWidth, |
| michael@0 | 53 | info.fHeight, |
| michael@0 | 54 | &bitmap); |
| michael@0 | 55 | if (NULL == fScaledCacheId) { |
| michael@0 | 56 | // Cache has been purged, must re-decode. |
| michael@0 | 57 | if ((!bitmap.setConfig(info, fRowBytes)) || !bitmap.allocPixels()) { |
| michael@0 | 58 | fErrorInDecoding = true; |
| michael@0 | 59 | return false; |
| michael@0 | 60 | } |
| michael@0 | 61 | SkAutoLockPixels autoLockPixels(bitmap); |
| michael@0 | 62 | if (!fImageGenerator->getPixels(info, bitmap.getPixels(), fRowBytes)) { |
| michael@0 | 63 | fErrorInDecoding = true; |
| michael@0 | 64 | return false; |
| michael@0 | 65 | } |
| michael@0 | 66 | fScaledCacheId = SkScaledImageCache::AddAndLock(this->getGenerationID(), |
| michael@0 | 67 | info.fWidth, |
| michael@0 | 68 | info.fHeight, |
| michael@0 | 69 | bitmap); |
| michael@0 | 70 | SkASSERT(fScaledCacheId != NULL); |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | // Now bitmap should contain a concrete PixelRef of the decoded |
| michael@0 | 74 | // image. |
| michael@0 | 75 | SkAutoLockPixels autoLockPixels(bitmap); |
| michael@0 | 76 | void* pixels = bitmap.getPixels(); |
| michael@0 | 77 | SkASSERT(pixels != NULL); |
| michael@0 | 78 | |
| michael@0 | 79 | // At this point, the autoLockPixels will unlockPixels() |
| michael@0 | 80 | // to remove bitmap's lock on the pixels. We will then |
| michael@0 | 81 | // destroy bitmap. The *only* guarantee that this pointer |
| michael@0 | 82 | // remains valid is the guarantee made by |
| michael@0 | 83 | // SkScaledImageCache that it will not destroy the *other* |
| michael@0 | 84 | // bitmap (SkScaledImageCache::Rec.fBitmap) that holds a |
| michael@0 | 85 | // reference to the concrete PixelRef while this record is |
| michael@0 | 86 | // locked. |
| michael@0 | 87 | rec->fPixels = pixels; |
| michael@0 | 88 | rec->fColorTable = NULL; |
| michael@0 | 89 | rec->fRowBytes = bitmap.rowBytes(); |
| michael@0 | 90 | return true; |
| michael@0 | 91 | } |
| michael@0 | 92 | |
| michael@0 | 93 | void SkCachingPixelRef::onUnlockPixels() { |
| michael@0 | 94 | SkASSERT(fScaledCacheId != NULL); |
| michael@0 | 95 | SkScaledImageCache::Unlock( static_cast<SkScaledImageCache::ID*>(fScaledCacheId)); |
| michael@0 | 96 | fScaledCacheId = NULL; |
| michael@0 | 97 | } |
