The Tor Browser: gfx/skia/trunk/src/images/SkImageRef.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/images/SkImageRef.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/images/SkImageRef.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.

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkImageRef.h"
 #include "SkBitmap.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 #include "SkImageDecoder.h"
 #include "SkStream.h"
 #include "SkTemplates.h"
 #include "SkThread.h"
 //#define DUMP_IMAGEREF_LIFECYCLE
 ///////////////////////////////////////////////////////////////////////////////
 SkImageRef::SkImageRef(const SkImageInfo& info, SkStreamRewindable* stream,
                        int sampleSize, SkBaseMutex* mutex)
         : INHERITED(info, mutex), fErrorInDecoding(false)
 {
     SkASSERT(stream);
     stream->ref();
     fStream = stream;
     fSampleSize = sampleSize;
     fDoDither = true;
     fPrev = fNext = NULL;
     fFactory = NULL;
     // This sets the colortype/alphatype to exactly match our info, so that this
     // can get communicated down to the codec.
     fBitmap.setConfig(info);
 #ifdef DUMP_IMAGEREF_LIFECYCLE
     SkDebugf("add ImageRef %p [%d] data=%d\n",
               this, this->info().fColorType, (int)stream->getLength());
 #endif
 }
 SkImageRef::~SkImageRef() {
 #ifdef DUMP_IMAGEREF_LIFECYCLE
     SkDebugf("delete ImageRef %p [%d] data=%d\n",
               this, this->info().fColorType, (int)fStream->getLength());
 #endif
     fStream->unref();
     SkSafeUnref(fFactory);
 }
 bool SkImageRef::getInfo(SkBitmap* bitmap) {
     SkAutoMutexAcquire ac(this->mutex());
     if (!this->prepareBitmap(SkImageDecoder::kDecodeBounds_Mode)) {
         return false;
     }
     SkASSERT(SkBitmap::kNo_Config != fBitmap.config());
     if (bitmap) {
         bitmap->setConfig(fBitmap.config(), fBitmap.width(), fBitmap.height());
     }
     return true;
 }
 bool SkImageRef::isOpaque(SkBitmap* bitmap) {
     if (bitmap && bitmap->pixelRef() == this) {
         bitmap->lockPixels();
         // what about colortables??????
         bitmap->setAlphaType(fBitmap.alphaType());
         bitmap->unlockPixels();
         return true;
     }
     return false;
 }
 SkImageDecoderFactory* SkImageRef::setDecoderFactory(
                                                 SkImageDecoderFactory* fact) {
     SkRefCnt_SafeAssign(fFactory, fact);
     return fact;
 }
 ///////////////////////////////////////////////////////////////////////////////
 bool SkImageRef::onDecode(SkImageDecoder* codec, SkStreamRewindable* stream,
                           SkBitmap* bitmap, SkBitmap::Config config,
                           SkImageDecoder::Mode mode) {
     return codec->decode(stream, bitmap, config, mode);
 }
 bool SkImageRef::prepareBitmap(SkImageDecoder::Mode mode) {
     if (fErrorInDecoding) {
         return false;
     }
     if (NULL != fBitmap.getPixels() ||
             (SkBitmap::kNo_Config != fBitmap.config() &&
              SkImageDecoder::kDecodeBounds_Mode == mode)) {
         return true;
     }
     SkASSERT(fBitmap.getPixels() == NULL);
     if (!fStream->rewind()) {
         SkDEBUGF(("Failed to rewind SkImageRef stream!"));
         return false;
     }
     SkImageDecoder* codec;
     if (fFactory) {
         codec = fFactory->newDecoder(fStream);
     } else {
         codec = SkImageDecoder::Factory(fStream);
     }
     if (codec) {
         SkAutoTDelete<SkImageDecoder> ad(codec);
         codec->setSampleSize(fSampleSize);
         codec->setDitherImage(fDoDither);
         codec->setRequireUnpremultipliedColors(this->info().fAlphaType == kUnpremul_SkAlphaType);
         if (this->onDecode(codec, fStream, &fBitmap, fBitmap.config(), mode)) {
             if (kOpaque_SkAlphaType == fBitmap.alphaType()) {
                 this->changeAlphaType(kOpaque_SkAlphaType);
             }
             SkASSERT(this->info() == fBitmap.info());
             return true;
         }
     }
 #ifdef DUMP_IMAGEREF_LIFECYCLE
     if (NULL == codec) {
         SkDebugf("--- ImageRef: <%s> failed to find codec\n", this->getURI());
     } else {
         SkDebugf("--- ImageRef: <%s> failed in codec for %d mode\n",
                  this->getURI(), mode);
     }
 #endif
     fErrorInDecoding = true;
     fBitmap.reset();
     return false;
 }
 bool SkImageRef::onNewLockPixels(LockRec* rec) {
     if (NULL == fBitmap.getPixels()) {
         (void)this->prepareBitmap(SkImageDecoder::kDecodePixels_Mode);
     }
     if (NULL == fBitmap.getPixels()) {
         return false;
     }
     rec->fPixels = fBitmap.getPixels();
     rec->fColorTable = NULL;
     rec->fRowBytes = fBitmap.rowBytes();
     return true;
 }
 size_t SkImageRef::ramUsed() const {
     size_t size = 0;
     if (fBitmap.getPixels()) {
         size = fBitmap.getSize();
         if (fBitmap.getColorTable()) {
             size += fBitmap.getColorTable()->count() * sizeof(SkPMColor);
         }
     }
     return size;
 }
 ///////////////////////////////////////////////////////////////////////////////
 SkImageRef::SkImageRef(SkReadBuffer& buffer, SkBaseMutex* mutex)
         : INHERITED(buffer, mutex), fErrorInDecoding(false) {
     fSampleSize = buffer.readInt();
     fDoDither = buffer.readBool();
     size_t length = buffer.getArrayCount();
     if (buffer.validateAvailable(length)) {
         fStream = SkNEW_ARGS(SkMemoryStream, (length));
         buffer.readByteArray((void*)fStream->getMemoryBase(), length);
     } else {
         fStream = NULL;
     }
     fPrev = fNext = NULL;
     fFactory = NULL;
     // This sets the colortype/alphatype to exactly match our info, so that this
     // can get communicated down to the codec.
     fBitmap.setConfig(this->info());
 }
 void SkImageRef::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
     buffer.writeInt(fSampleSize);
     buffer.writeBool(fDoDither);
     // FIXME: Consider moving this logic should go into writeStream itself.
     // writeStream currently has no other callers, so this may be fine for
     // now.
     if (!fStream->rewind()) {
         SkDEBUGF(("Failed to rewind SkImageRef stream!"));
         buffer.write32(0);
     } else {
         // FIXME: Handle getLength properly here. Perhaps this class should
         // take an SkStreamAsset.
         buffer.writeStream(fStream, fStream->getLength());
     }
 }

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gfx/skia/trunk/src/images/SkImageRef.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/images/SkImageRef.cpp