The Tor Browser: gfx/layers/client/ImageClient.cpp@b8a032363ba2 (annotated)

gfx/layers/client/ImageClient.cpp@b8a032363ba2 (annotated)

gfx/layers/client/ImageClient.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "ImageClient.h"
 #include <stdint.h>                     // for uint32_t
 #include "ImageContainer.h"             // for Image, PlanarYCbCrImage, etc
 #include "ImageTypes.h"                 // for ImageFormat::PLANAR_YCBCR, etc
 #include "SharedTextureImage.h"         // for SharedTextureImage::Data, etc
 #include "gfx2DGlue.h"                  // for ImageFormatToSurfaceFormat
 #include "gfxPlatform.h"                // for gfxPlatform
 #include "mozilla/Assertions.h"         // for MOZ_ASSERT, etc
 #include "mozilla/RefPtr.h"             // for RefPtr, TemporaryRef
 #include "mozilla/gfx/BaseSize.h"       // for BaseSize
 #include "mozilla/gfx/Point.h"          // for IntSize
 #include "mozilla/gfx/Types.h"          // for SurfaceFormat, etc
 #include "mozilla/layers/CompositableClient.h"  // for CompositableClient
 #include "mozilla/layers/CompositableForwarder.h"
 #include "mozilla/layers/CompositorTypes.h"  // for CompositableType, etc
 #include "mozilla/layers/ISurfaceAllocator.h"
 #include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor, etc
 #include "mozilla/layers/ShadowLayers.h"  // for ShadowLayerForwarder
 #include "mozilla/layers/SharedPlanarYCbCrImage.h"
 #include "mozilla/layers/SharedRGBImage.h"
 #include "mozilla/layers/TextureClient.h"  // for TextureClient, etc
 #include "mozilla/layers/TextureClientOGL.h"  // for SharedTextureClientOGL
 #include "mozilla/mozalloc.h"           // for operator delete, etc
 #include "nsAutoPtr.h"                  // for nsRefPtr
 #include "nsCOMPtr.h"                   // for already_AddRefed
 #include "nsDebug.h"                    // for NS_WARNING, NS_ASSERTION
 #include "nsISupportsImpl.h"            // for Image::Release, etc
 #include "nsRect.h"                     // for nsIntRect
 #include "mozilla/gfx/2D.h"
 #ifdef MOZ_WIDGET_GONK
 #include "GrallocImages.h"
 #endif
 using namespace mozilla::gfx;
 namespace mozilla {
 namespace layers {
 /* static */ TemporaryRef<ImageClient>
 ImageClient::CreateImageClient(CompositableType aCompositableHostType,
                                CompositableForwarder* aForwarder,
                                TextureFlags aFlags)
 {
   RefPtr<ImageClient> result = nullptr;
   switch (aCompositableHostType) {
   case COMPOSITABLE_IMAGE:
   case BUFFER_IMAGE_SINGLE:
     result = new ImageClientSingle(aForwarder, aFlags, COMPOSITABLE_IMAGE);
     break;
   case BUFFER_IMAGE_BUFFERED:
     result = new ImageClientBuffered(aForwarder, aFlags, COMPOSITABLE_IMAGE);
     break;
   case BUFFER_BRIDGE:
     result = new ImageClientBridge(aForwarder, aFlags);
     break;
   case BUFFER_UNKNOWN:
     result = nullptr;
     break;
   default:
     MOZ_CRASH("unhandled program type");
   }
   NS_ASSERTION(result, "Failed to create ImageClient");
   return result.forget();
 }
 ImageClientSingle::ImageClientSingle(CompositableForwarder* aFwd,
                                      TextureFlags aFlags,
                                      CompositableType aType)
   : ImageClient(aFwd, aFlags, aType)
 {
 }
 ImageClientBuffered::ImageClientBuffered(CompositableForwarder* aFwd,
                                          TextureFlags aFlags,
                                          CompositableType aType)
   : ImageClientSingle(aFwd, aFlags, aType)
 {
 }
 TextureInfo ImageClientSingle::GetTextureInfo() const
 {
   return TextureInfo(COMPOSITABLE_IMAGE);
 }
 void
 ImageClientSingle::FlushAllImages(bool aExceptFront)
 {
   if (!aExceptFront && mFrontBuffer) {
     GetForwarder()->RemoveTextureFromCompositable(this, mFrontBuffer);
     mFrontBuffer = nullptr;
   }
 }
 void
 ImageClientBuffered::FlushAllImages(bool aExceptFront)
 {
   if (!aExceptFront && mFrontBuffer) {
     GetForwarder()->RemoveTextureFromCompositable(this, mFrontBuffer);
     mFrontBuffer = nullptr;
   }
   if (mBackBuffer) {
     GetForwarder()->RemoveTextureFromCompositable(this, mBackBuffer);
     mBackBuffer = nullptr;
   }
 }
 bool
 ImageClientSingle::UpdateImage(ImageContainer* aContainer,
                                uint32_t aContentFlags)
 {
   bool isSwapped = false;
   return UpdateImageInternal(aContainer, aContentFlags, &isSwapped);
 }
 bool
 ImageClientSingle::UpdateImageInternal(ImageContainer* aContainer,
                                        uint32_t aContentFlags, bool* aIsSwapped)
 {
   AutoLockImage autoLock(aContainer);
   *aIsSwapped = false;
   Image *image = autoLock.GetImage();
   if (!image) {
     return false;
   }
   if (mLastPaintedImageSerial == image->GetSerial()) {
     return true;
   }
   if (image->AsSharedImage() && image->AsSharedImage()->GetTextureClient(this)) {
     // fast path: no need to allocate and/or copy image data
     RefPtr<TextureClient> texture = image->AsSharedImage()->GetTextureClient(this);
     if (mFrontBuffer) {
       GetForwarder()->RemoveTextureFromCompositable(this, mFrontBuffer);
     }
     mFrontBuffer = texture;
     if (!AddTextureClient(texture)) {
       mFrontBuffer = nullptr;
       return false;
     }
     GetForwarder()->UpdatedTexture(this, texture, nullptr);
     GetForwarder()->UseTexture(this, texture);
   } else if (image->GetFormat() == ImageFormat::PLANAR_YCBCR) {
     PlanarYCbCrImage* ycbcr = static_cast<PlanarYCbCrImage*>(image);
     const PlanarYCbCrData* data = ycbcr->GetData();
     if (!data) {
       return false;
     }
     if (mFrontBuffer && mFrontBuffer->IsImmutable()) {
       GetForwarder()->RemoveTextureFromCompositable(this, mFrontBuffer);
       mFrontBuffer = nullptr;
     }
     bool bufferCreated = false;
     if (!mFrontBuffer) {
       mFrontBuffer = CreateBufferTextureClient(gfx::SurfaceFormat::YUV, TEXTURE_FLAGS_DEFAULT);
       gfx::IntSize ySize(data->mYSize.width, data->mYSize.height);
       gfx::IntSize cbCrSize(data->mCbCrSize.width, data->mCbCrSize.height);
       if (!mFrontBuffer->AsTextureClientYCbCr()->AllocateForYCbCr(ySize, cbCrSize, data->mStereoMode)) {
         mFrontBuffer = nullptr;
         return false;
       }
       bufferCreated = true;
     }
     if (!mFrontBuffer->Lock(OPEN_WRITE_ONLY)) {
       mFrontBuffer = nullptr;
       return false;
     }
     bool status = mFrontBuffer->AsTextureClientYCbCr()->UpdateYCbCr(*data);
     mFrontBuffer->Unlock();
     if (bufferCreated) {
       if (!AddTextureClient(mFrontBuffer)) {
         mFrontBuffer = nullptr;
         return false;
       }
     }
     if (status) {
       GetForwarder()->UpdatedTexture(this, mFrontBuffer, nullptr);
       GetForwarder()->UseTexture(this, mFrontBuffer);
     } else {
       MOZ_ASSERT(false);
       return false;
     }
   } else if (image->GetFormat() == ImageFormat::SHARED_TEXTURE) {
     SharedTextureImage* sharedImage = static_cast<SharedTextureImage*>(image);
     const SharedTextureImage::Data *data = sharedImage->GetData();
     gfx::IntSize size = gfx::IntSize(image->GetSize().width, image->GetSize().height);
     if (mFrontBuffer) {
       GetForwarder()->RemoveTextureFromCompositable(this, mFrontBuffer);
       mFrontBuffer = nullptr;
     }
     RefPtr<SharedTextureClientOGL> buffer = new SharedTextureClientOGL(mTextureFlags);
     buffer->InitWith(data->mHandle, size, data->mShareType, data->mInverted);
     mFrontBuffer = buffer;
     if (!AddTextureClient(mFrontBuffer)) {
       mFrontBuffer = nullptr;
       return false;
     }
     GetForwarder()->UseTexture(this, mFrontBuffer);
   } else {
     RefPtr<gfx::SourceSurface> surface = image->GetAsSourceSurface();
     MOZ_ASSERT(surface);
     gfx::IntSize size = image->GetSize();
     if (mFrontBuffer &&
         (mFrontBuffer->IsImmutable() || mFrontBuffer->GetSize() != size)) {
       GetForwarder()->RemoveTextureFromCompositable(this, mFrontBuffer);
       mFrontBuffer = nullptr;
     }
     bool bufferCreated = false;
     if (!mFrontBuffer) {
       gfxImageFormat format
         = gfxPlatform::GetPlatform()->OptimalFormatForContent(gfx::ContentForFormat(surface->GetFormat()));
       mFrontBuffer = CreateTextureClientForDrawing(gfx::ImageFormatToSurfaceFormat(format),
                                                    mTextureFlags, gfx::BackendType::NONE, size);
       MOZ_ASSERT(mFrontBuffer->CanExposeDrawTarget());
       if (!mFrontBuffer->AllocateForSurface(size)) {
         mFrontBuffer = nullptr;
         return false;
       }
       bufferCreated = true;
     }
     if (!mFrontBuffer->Lock(OPEN_WRITE_ONLY)) {
       mFrontBuffer = nullptr;
       return false;
     }
     {
       // We must not keep a reference to the DrawTarget after it has been unlocked.
       RefPtr<DrawTarget> dt = mFrontBuffer->GetAsDrawTarget();
       MOZ_ASSERT(surface.get());
       dt->CopySurface(surface, IntRect(IntPoint(), surface->GetSize()), IntPoint());
     }
     mFrontBuffer->Unlock();
     if (bufferCreated) {
       if (!AddTextureClient(mFrontBuffer)) {
         mFrontBuffer = nullptr;
         return false;
       }
     }
     GetForwarder()->UpdatedTexture(this, mFrontBuffer, nullptr);
     GetForwarder()->UseTexture(this, mFrontBuffer);
   }
   UpdatePictureRect(image->GetPictureRect());
   mLastPaintedImageSerial = image->GetSerial();
   aContainer->NotifyPaintedImage(image);
   *aIsSwapped = true;
   return true;
 }
 bool
 ImageClientBuffered::UpdateImage(ImageContainer* aContainer,
                                  uint32_t aContentFlags)
 {
   RefPtr<TextureClient> temp = mFrontBuffer;
   mFrontBuffer = mBackBuffer;
   mBackBuffer = temp;
   bool isSwapped = false;
   bool ret = ImageClientSingle::UpdateImageInternal(aContainer, aContentFlags, &isSwapped);
   if (!isSwapped) {
     // If buffer swap did not happen at Host side, swap back the buffers.
     RefPtr<TextureClient> temp = mFrontBuffer;
     mFrontBuffer = mBackBuffer;
     mBackBuffer = temp;
   }
   return ret;
 }
 bool
 ImageClientSingle::AddTextureClient(TextureClient* aTexture)
 {
   MOZ_ASSERT((mTextureFlags & aTexture->GetFlags()) == mTextureFlags);
   return CompositableClient::AddTextureClient(aTexture);
 }
 void
 ImageClientSingle::OnDetach()
 {
   mFrontBuffer = nullptr;
 }
 void
 ImageClientBuffered::OnDetach()
 {
   mFrontBuffer = nullptr;
   mBackBuffer = nullptr;
 }
 ImageClient::ImageClient(CompositableForwarder* aFwd, TextureFlags aFlags,
                          CompositableType aType)
 : CompositableClient(aFwd, aFlags)
 , mType(aType)
 , mLastPaintedImageSerial(0)
 {}
 void
 ImageClient::UpdatePictureRect(nsIntRect aRect)
 {
   if (mPictureRect == aRect) {
     return;
   }
   mPictureRect = aRect;
   MOZ_ASSERT(mForwarder);
   GetForwarder()->UpdatePictureRect(this, aRect);
 }
 ImageClientBridge::ImageClientBridge(CompositableForwarder* aFwd,
                                      TextureFlags aFlags)
 : ImageClient(aFwd, aFlags, BUFFER_BRIDGE)
 , mAsyncContainerID(0)
 , mLayer(nullptr)
 {
 }
 bool
 ImageClientBridge::UpdateImage(ImageContainer* aContainer, uint32_t aContentFlags)
 {
   if (!GetForwarder() || !mLayer) {
     return false;
   }
   if (mAsyncContainerID == aContainer->GetAsyncContainerID()) {
     return true;
   }
   mAsyncContainerID = aContainer->GetAsyncContainerID();
   static_cast<ShadowLayerForwarder*>(GetForwarder())->AttachAsyncCompositable(mAsyncContainerID, mLayer);
   AutoLockImage autoLock(aContainer);
   aContainer->NotifyPaintedImage(autoLock.GetImage());
   Updated();
   return true;
 }
 already_AddRefed<Image>
 ImageClientSingle::CreateImage(ImageFormat aFormat)
 {
   nsRefPtr<Image> img;
   switch (aFormat) {
     case ImageFormat::PLANAR_YCBCR:
       img = new SharedPlanarYCbCrImage(this);
       return img.forget();
     case ImageFormat::SHARED_RGB:
       img = new SharedRGBImage(this);
       return img.forget();
 #ifdef MOZ_WIDGET_GONK
     case ImageFormat::GRALLOC_PLANAR_YCBCR:
       img = new GrallocImage();
       return img.forget();
 #endif
     default:
       return nullptr;
   }
 }
 }
 }

The Tor Browser / annotate

gfx/layers/client/ImageClient.cpp@b8a032363ba2 (annotated)

gfx/layers/client/ImageClient.cpp