The Tor Browser: gfx/layers/D3D9SurfaceImage.cpp@97036ab72558 (annotated)

gfx/layers/D3D9SurfaceImage.cpp@97036ab72558 (annotated)

gfx/layers/D3D9SurfaceImage.cpp

Tue, 06 Jan 2015 21:39:09 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 06 Jan 2015 21:39:09 +0100
branch: TOR_BUG_9701
changeset 8: 97036ab72558
permissions: -rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /* -*- 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 "D3D9SurfaceImage.h"
 #include "gfx2DGlue.h"
 #include "mozilla/layers/TextureD3D9.h"
 #include "mozilla/gfx/Types.h"
 namespace mozilla {
 namespace layers {
 D3D9SurfaceImage::D3D9SurfaceImage()
   : Image(nullptr, ImageFormat::D3D9_RGB32_TEXTURE)
   , mSize(0, 0)
 {}
 D3D9SurfaceImage::~D3D9SurfaceImage() {}
 HRESULT
 D3D9SurfaceImage::SetData(const Data& aData)
 {
   NS_ENSURE_TRUE(aData.mSurface, E_POINTER);
   HRESULT hr;
   RefPtr<IDirect3DSurface9> surface = aData.mSurface;
   RefPtr<IDirect3DDevice9> device;
   hr = surface->GetDevice(byRef(device));
   NS_ENSURE_TRUE(SUCCEEDED(hr), E_FAIL);
   RefPtr<IDirect3D9> d3d9;
   hr = device->GetDirect3D(byRef(d3d9));
   NS_ENSURE_TRUE(SUCCEEDED(hr), E_FAIL);
   D3DSURFACE_DESC desc;
   surface->GetDesc(&desc);
   // Ensure we can convert the textures format to RGB conversion
   // in StretchRect. Fail if we can't.
   hr = d3d9->CheckDeviceFormatConversion(D3DADAPTER_DEFAULT,
                                          D3DDEVTYPE_HAL,
                                          desc.Format,
                                          D3DFMT_X8R8G8B8);
   NS_ENSURE_TRUE(SUCCEEDED(hr), hr);
   // DXVA surfaces aren't created sharable, so we need to copy the surface
   // to a sharable texture to that it's accessible to the layer manager's
   // device.
   const nsIntRect& region = aData.mRegion;
   RefPtr<IDirect3DTexture9> texture;
   HANDLE shareHandle = nullptr;
   hr = device->CreateTexture(region.width,
                              region.height,
 ,
                              D3DUSAGE_RENDERTARGET,
                              D3DFMT_X8R8G8B8,
                              D3DPOOL_DEFAULT,
                              byRef(texture),
                              &shareHandle);
   NS_ENSURE_TRUE(SUCCEEDED(hr) && shareHandle, hr);
   // Copy the image onto the texture, preforming YUV -> RGB conversion if necessary.
   RefPtr<IDirect3DSurface9> textureSurface;
   hr = texture->GetSurfaceLevel(0, byRef(textureSurface));
   NS_ENSURE_TRUE(SUCCEEDED(hr), hr);
   // Stash the surface description for later use.
   textureSurface->GetDesc(&mDesc);
   RECT src = { region.x, region.y, region.x+region.width, region.y+region.height };
   hr = device->StretchRect(surface, &src, textureSurface, nullptr, D3DTEXF_NONE);
   NS_ENSURE_TRUE(SUCCEEDED(hr), hr);
   // Flush the draw command now, so that by the time we come to draw this
   // image, we're less likely to need to wait for the draw operation to
   // complete.
   RefPtr<IDirect3DQuery9> query;
   hr = device->CreateQuery(D3DQUERYTYPE_EVENT, byRef(query));
   NS_ENSURE_TRUE(SUCCEEDED(hr), hr);
   hr = query->Issue(D3DISSUE_END);
   NS_ENSURE_TRUE(SUCCEEDED(hr), hr);
   mTexture = texture;
   mShareHandle = shareHandle;
   mSize = gfx::IntSize(region.width, region.height);
   mQuery = query;
   return S_OK;
 }
 void
 D3D9SurfaceImage::EnsureSynchronized()
 {
   if (!mQuery) {
     // Not setup, or already synchronized.
     return;
   }
   int iterations = 0;
   while (iterations < 10 && S_FALSE == mQuery->GetData(nullptr, 0, D3DGETDATA_FLUSH)) {
     Sleep(1);
     iterations++;
   }
   mQuery = nullptr;
 }
 HANDLE
 D3D9SurfaceImage::GetShareHandle()
 {
   // Ensure the image has completed its synchronization,
   // and safe to used by the caller on another device.
   EnsureSynchronized();
   return mShareHandle;
 }
 const D3DSURFACE_DESC&
 D3D9SurfaceImage::GetDesc() const
 {
   return mDesc;
 }
 gfx::IntSize
 D3D9SurfaceImage::GetSize()
 {
   return mSize;
 }
 TextureClient*
 D3D9SurfaceImage::GetTextureClient(CompositableClient* aClient)
 {
   EnsureSynchronized();
   if (!mTextureClient) {
     RefPtr<SharedTextureClientD3D9> textureClient =
       new SharedTextureClientD3D9(gfx::SurfaceFormat::B8G8R8X8, TEXTURE_FLAGS_DEFAULT);
     textureClient->InitWith(mTexture, mShareHandle, mDesc);
     mTextureClient = textureClient;
   }
   return mTextureClient;
 }
 TemporaryRef<gfx::SourceSurface>
 D3D9SurfaceImage::GetAsSourceSurface()
 {
   NS_ENSURE_TRUE(mTexture, nullptr);
   HRESULT hr;
   RefPtr<gfx::DataSourceSurface> surface = gfx::Factory::CreateDataSourceSurface(mSize, gfx::SurfaceFormat::B8G8R8X8);
   if (!surface) {
     NS_WARNING("Failed to created SourceSurface for D3D9SurfaceImage.");
     return nullptr;
   }
   // Ensure that the texture is ready to be used.
   EnsureSynchronized();
   // Readback the texture from GPU memory into system memory, so that
   // we can copy it into the Cairo image. This is expensive.
   RefPtr<IDirect3DSurface9> textureSurface;
   hr = mTexture->GetSurfaceLevel(0, byRef(textureSurface));
   NS_ENSURE_TRUE(SUCCEEDED(hr), nullptr);
   RefPtr<IDirect3DDevice9> device;
   hr = mTexture->GetDevice(byRef(device));
   NS_ENSURE_TRUE(SUCCEEDED(hr), nullptr);
   RefPtr<IDirect3DSurface9> systemMemorySurface;
   hr = device->CreateOffscreenPlainSurface(mDesc.Width,
                                            mDesc.Height,
                                            D3DFMT_X8R8G8B8,
                                            D3DPOOL_SYSTEMMEM,
                                            byRef(systemMemorySurface),
 );
   NS_ENSURE_TRUE(SUCCEEDED(hr), nullptr);
   hr = device->GetRenderTargetData(textureSurface, systemMemorySurface);
   NS_ENSURE_TRUE(SUCCEEDED(hr), nullptr);
   D3DLOCKED_RECT rect;
   hr = systemMemorySurface->LockRect(&rect, nullptr, 0);
   NS_ENSURE_TRUE(SUCCEEDED(hr), nullptr);
   gfx::DataSourceSurface::MappedSurface mappedSurface;
   if (!surface->Map(gfx::DataSourceSurface::WRITE, &mappedSurface)) {
     systemMemorySurface->UnlockRect();
     return nullptr;
   }
   const unsigned char* src = (const unsigned char*)(rect.pBits);
   const unsigned srcPitch = rect.Pitch;
   for (int y = 0; y < mSize.height; y++) {
     memcpy(mappedSurface.mData + mappedSurface.mStride * y,
            (unsigned char*)(src) + srcPitch * y,
            mSize.width * 4);
   }
   systemMemorySurface->UnlockRect();
   surface->Unmap();
   return surface;
 }
 } /* layers */
 } /* mozilla */

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gfx/layers/D3D9SurfaceImage.cpp@97036ab72558 (annotated)

gfx/layers/D3D9SurfaceImage.cpp