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

gfx/skia/trunk/src/gpu/SkGr.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/gpu/SkGr.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 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkGr.h"
 #include "SkConfig8888.h"
 #include "SkMessageBus.h"
 #include "SkPixelRef.h"
 #include "GrResourceCache.h"
 /*  Fill out buffer with the compressed format Ganesh expects from a colortable
  based bitmap. [palette (colortable) + indices].
  At the moment Ganesh only supports 8bit version. If Ganesh allowed we others
  we could detect that the colortable.count is <= 16, and then repack the
  indices as nibbles to save RAM, but it would take more time (i.e. a lot
  slower than memcpy), so skipping that for now.
  Ganesh wants a full 256 palette entry, even though Skia's ctable is only as big
  as the colortable.count says it is.
  */
 static void build_compressed_data(void* buffer, const SkBitmap& bitmap) {
     SkASSERT(SkBitmap::kIndex8_Config == bitmap.config());
     SkAutoLockPixels alp(bitmap);
     if (!bitmap.readyToDraw()) {
         SkDEBUGFAIL("bitmap not ready to draw!");
         return;
     }
     SkColorTable* ctable = bitmap.getColorTable();
     char* dst = (char*)buffer;
     uint32_t* colorTableDst = reinterpret_cast<uint32_t*>(dst);
     const uint32_t* colorTableSrc = reinterpret_cast<const uint32_t*>(ctable->lockColors());
     SkConvertConfig8888Pixels(colorTableDst, 0, SkCanvas::kRGBA_Premul_Config8888,
                               colorTableSrc, 0, SkCanvas::kNative_Premul_Config8888,
                               ctable->count(), 1);
     ctable->unlockColors();
     // always skip a full 256 number of entries, even if we memcpy'd fewer
     dst += kGrColorTableSize;
     if ((unsigned)bitmap.width() == bitmap.rowBytes()) {
         memcpy(dst, bitmap.getPixels(), bitmap.getSize());
     } else {
         // need to trim off the extra bytes per row
         size_t width = bitmap.width();
         size_t rowBytes = bitmap.rowBytes();
         const char* src = (const char*)bitmap.getPixels();
         for (int y = 0; y < bitmap.height(); y++) {
             memcpy(dst, src, width);
             src += rowBytes;
             dst += width;
         }
     }
 }
 ////////////////////////////////////////////////////////////////////////////////
 static void generate_bitmap_cache_id(const SkBitmap& bitmap, GrCacheID* id) {
     // Our id includes the offset, width, and height so that bitmaps created by extractSubset()
     // are unique.
     uint32_t genID = bitmap.getGenerationID();
     SkIPoint origin = bitmap.pixelRefOrigin();
     int16_t width = SkToS16(bitmap.width());
     int16_t height = SkToS16(bitmap.height());
     GrCacheID::Key key;
     memcpy(key.fData8 +  0, &genID,     4);
     memcpy(key.fData8 +  4, &origin.fX, 4);
     memcpy(key.fData8 +  8, &origin.fY, 4);
     memcpy(key.fData8 + 12, &width,     2);
     memcpy(key.fData8 + 14, &height,    2);
     static const size_t kKeyDataSize = 16;
     memset(key.fData8 + kKeyDataSize, 0, sizeof(key) - kKeyDataSize);
     GR_STATIC_ASSERT(sizeof(key) >= kKeyDataSize);
     static const GrCacheID::Domain gBitmapTextureDomain = GrCacheID::GenerateDomain();
     id->reset(gBitmapTextureDomain, key);
 }
 static void generate_bitmap_texture_desc(const SkBitmap& bitmap, GrTextureDesc* desc) {
     desc->fFlags = kNone_GrTextureFlags;
     desc->fWidth = bitmap.width();
     desc->fHeight = bitmap.height();
     desc->fConfig = SkBitmapConfig2GrPixelConfig(bitmap.config());
     desc->fSampleCnt = 0;
 }
 namespace {
 // When the SkPixelRef genID changes, invalidate a corresponding GrResource described by key.
 class GrResourceInvalidator : public SkPixelRef::GenIDChangeListener {
 public:
     explicit GrResourceInvalidator(GrResourceKey key) : fKey(key) {}
 private:
     GrResourceKey fKey;
     virtual void onChange() SK_OVERRIDE {
         const GrResourceInvalidatedMessage message = { fKey };
         SkMessageBus<GrResourceInvalidatedMessage>::Post(message);
     }
 };
 }  // namespace
 static void add_genID_listener(GrResourceKey key, SkPixelRef* pixelRef) {
     SkASSERT(NULL != pixelRef);
     pixelRef->addGenIDChangeListener(SkNEW_ARGS(GrResourceInvalidator, (key)));
 }
 static GrTexture* sk_gr_create_bitmap_texture(GrContext* ctx,
                                               bool cache,
                                               const GrTextureParams* params,
                                               const SkBitmap& origBitmap) {
     SkBitmap tmpBitmap;
     const SkBitmap* bitmap = &origBitmap;
     GrTextureDesc desc;
     generate_bitmap_texture_desc(*bitmap, &desc);
     if (SkBitmap::kIndex8_Config == bitmap->config()) {
         // build_compressed_data doesn't do npot->pot expansion
         // and paletted textures can't be sub-updated
         if (ctx->supportsIndex8PixelConfig(params, bitmap->width(), bitmap->height())) {
             size_t imagesize = bitmap->width() * bitmap->height() + kGrColorTableSize;
             SkAutoMalloc storage(imagesize);
             build_compressed_data(storage.get(), origBitmap);
             // our compressed data will be trimmed, so pass width() for its
             // "rowBytes", since they are the same now.
             if (cache) {
                 GrCacheID cacheID;
                 generate_bitmap_cache_id(origBitmap, &cacheID);
                 GrResourceKey key;
                 GrTexture* result = ctx->createTexture(params, desc, cacheID,
                                                        storage.get(), bitmap->width(), &key);
                 if (NULL != result) {
                     add_genID_listener(key, origBitmap.pixelRef());
                 }
                 return result;
             } else {
                 GrTexture* result = ctx->lockAndRefScratchTexture(desc,
                                                             GrContext::kExact_ScratchTexMatch);
                 result->writePixels(0, 0, bitmap->width(),
                                     bitmap->height(), desc.fConfig,
                                     storage.get());
                 return result;
             }
         } else {
             origBitmap.copyTo(&tmpBitmap, kPMColor_SkColorType);
             // now bitmap points to our temp, which has been promoted to 32bits
             bitmap = &tmpBitmap;
             desc.fConfig = SkBitmapConfig2GrPixelConfig(bitmap->config());
         }
     }
     SkAutoLockPixels alp(*bitmap);
     if (!bitmap->readyToDraw()) {
         return NULL;
     }
     if (cache) {
         // This texture is likely to be used again so leave it in the cache
         GrCacheID cacheID;
         generate_bitmap_cache_id(origBitmap, &cacheID);
         GrResourceKey key;
         GrTexture* result = ctx->createTexture(params, desc, cacheID,
                                                bitmap->getPixels(), bitmap->rowBytes(), &key);
         if (NULL != result) {
             add_genID_listener(key, origBitmap.pixelRef());
         }
         return result;
    } else {
         // This texture is unlikely to be used again (in its present form) so
         // just use a scratch texture. This will remove the texture from the
         // cache so no one else can find it. Additionally, once unlocked, the
         // scratch texture will go to the end of the list for purging so will
         // likely be available for this volatile bitmap the next time around.
         GrTexture* result = ctx->lockAndRefScratchTexture(desc, GrContext::kExact_ScratchTexMatch);
         result->writePixels(0, 0,
                             bitmap->width(), bitmap->height(),
                             desc.fConfig,
                             bitmap->getPixels(),
                             bitmap->rowBytes());
         return result;
     }
 }
 bool GrIsBitmapInCache(const GrContext* ctx,
                        const SkBitmap& bitmap,
                        const GrTextureParams* params) {
     GrCacheID cacheID;
     generate_bitmap_cache_id(bitmap, &cacheID);
     GrTextureDesc desc;
     generate_bitmap_texture_desc(bitmap, &desc);
     return ctx->isTextureInCache(desc, cacheID, params);
 }
 GrTexture* GrLockAndRefCachedBitmapTexture(GrContext* ctx,
                                            const SkBitmap& bitmap,
                                            const GrTextureParams* params) {
     GrTexture* result = NULL;
     bool cache = !bitmap.isVolatile();
     if (cache) {
         // If the bitmap isn't changing try to find a cached copy first.
         GrCacheID cacheID;
         generate_bitmap_cache_id(bitmap, &cacheID);
         GrTextureDesc desc;
         generate_bitmap_texture_desc(bitmap, &desc);
         result = ctx->findAndRefTexture(desc, cacheID, params);
     }
     if (NULL == result) {
         result = sk_gr_create_bitmap_texture(ctx, cache, params, bitmap);
     }
     if (NULL == result) {
         GrPrintf("---- failed to create texture for cache [%d %d]\n",
                     bitmap.width(), bitmap.height());
     }
     return result;
 }
 void GrUnlockAndUnrefCachedBitmapTexture(GrTexture* texture) {
     SkASSERT(NULL != texture->getContext());
     texture->getContext()->unlockScratchTexture(texture);
     texture->unref();
 }
 ///////////////////////////////////////////////////////////////////////////////
 GrPixelConfig SkBitmapConfig2GrPixelConfig(SkBitmap::Config config) {
     switch (config) {
         case SkBitmap::kA8_Config:
             return kAlpha_8_GrPixelConfig;
         case SkBitmap::kIndex8_Config:
             return kIndex_8_GrPixelConfig;
         case SkBitmap::kRGB_565_Config:
             return kRGB_565_GrPixelConfig;
         case SkBitmap::kARGB_4444_Config:
             return kRGBA_4444_GrPixelConfig;
         case SkBitmap::kARGB_8888_Config:
             return kSkia8888_GrPixelConfig;
         default:
             // kNo_Config, kA1_Config missing
             return kUnknown_GrPixelConfig;
     }
 }
 // alphatype is ignore for now, but if GrPixelConfig is expanded to encompass
 // alpha info, that will be considered.
 GrPixelConfig SkImageInfo2GrPixelConfig(SkColorType ct, SkAlphaType) {
     switch (ct) {
         case kUnknown_SkColorType:
             return kUnknown_GrPixelConfig;
         case kAlpha_8_SkColorType:
             return kAlpha_8_GrPixelConfig;
         case kRGB_565_SkColorType:
             return kRGB_565_GrPixelConfig;
         case kARGB_4444_SkColorType:
             return kRGBA_4444_GrPixelConfig;
         case kRGBA_8888_SkColorType:
             return kRGBA_8888_GrPixelConfig;
         case kBGRA_8888_SkColorType:
             return kBGRA_8888_GrPixelConfig;
         case kIndex_8_SkColorType:
             return kIndex_8_GrPixelConfig;
     }
     SkASSERT(0);    // shouldn't get here
     return kUnknown_GrPixelConfig;
 }
 bool GrPixelConfig2ColorType(GrPixelConfig config, SkColorType* ctOut) {
     SkColorType ct;
     switch (config) {
         case kAlpha_8_GrPixelConfig:
             ct = kAlpha_8_SkColorType;
             break;
         case kIndex_8_GrPixelConfig:
             ct = kIndex_8_SkColorType;
             break;
         case kRGB_565_GrPixelConfig:
             ct = kRGB_565_SkColorType;
             break;
         case kRGBA_4444_GrPixelConfig:
             ct = kARGB_4444_SkColorType;
             break;
         case kRGBA_8888_GrPixelConfig:
             ct = kRGBA_8888_SkColorType;
             break;
         case kBGRA_8888_GrPixelConfig:
             ct = kBGRA_8888_SkColorType;
             break;
         default:
             return false;
     }
     if (ctOut) {
         *ctOut = ct;
     }
     return true;
 }

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gfx/skia/trunk/src/gpu/SkGr.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/gpu/SkGr.cpp