The Tor Browser: gfx/2d/SourceSurfaceD2D.h@97036ab72558

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.

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef MOZILLA_GFX_SOURCESURFACED2D_H_

     7 #define MOZILLA_GFX_SOURCESURFACED2D_H_

     9 #include "2D.h"

    10 #include "HelpersD2D.h"

    11 #include <vector>

    13 namespace mozilla {

    14 namespace gfx {

    16 class DataSourceSurfaceD2D;

    18 class SourceSurfaceD2D : public SourceSurface

    19 {

    20 public:

    21   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SourceSurfaceD2D)

    22   SourceSurfaceD2D();

    23   ~SourceSurfaceD2D();

    25   virtual SurfaceType GetType() const { return SurfaceType::D2D1_BITMAP; }

    26   virtual IntSize GetSize() const;

    27   virtual SurfaceFormat GetFormat() const;

    28   virtual bool IsValid() const;

    30   virtual TemporaryRef<DataSourceSurface> GetDataSurface();

    32   ID2D1Bitmap *GetBitmap() { return mBitmap; }

    34   bool InitFromData(unsigned char *aData,

    35                     const IntSize &aSize,

    36                     int32_t aStride,

    37                     SurfaceFormat aFormat,

    38                     ID2D1RenderTarget *aRT);

    39   bool InitFromTexture(ID3D10Texture2D *aTexture,

    40                        SurfaceFormat aFormat,

    41                        ID2D1RenderTarget *aRT);

    42 private:

    43   friend class DrawTargetD2D;

    44   friend class DataSourceSurfaceD2D;

    46   uint32_t GetByteSize() const;

    48   RefPtr<ID2D1Bitmap> mBitmap;

    49   // We need to keep this pointer here to check surface validity.

    50   RefPtr<ID3D10Device> mDevice;

    51   SurfaceFormat mFormat;

    52   IntSize mSize;

    53 };

    56 class DataSourceSurfaceD2D : public DataSourceSurface

    57 {

    58 public:

    59   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DataSourceSurfaceD2D)

    60   DataSourceSurfaceD2D(SourceSurfaceD2D* aSourceSurface);

    61   virtual ~DataSourceSurfaceD2D();

    63   virtual unsigned char* GetData();

    64   virtual int32_t Stride();

    65   virtual IntSize GetSize() const;

    66   virtual SurfaceFormat GetFormat() const;

    67   virtual bool Map(MapType, MappedSurface *aMappedSurface);

    68   virtual void Unmap();

    70   bool IsValid()

    71   {

    72     return mTexture;

    73   }

    75 private:

    76   void EnsureMappedTexture();

    78   RefPtr<ID3D10Texture2D> mTexture;

    80   D3D10_MAPPED_TEXTURE2D mData;

    82   SurfaceFormat mFormat;

    83   IntSize mSize;

    84   bool mMapped;

    85 };

    87 }

    88 }

    90 #endif /* MOZILLA_GFX_SOURCESURFACED2D_H_ */

The Tor Browser / file revision

gfx/2d/SourceSurfaceD2D.h@97036ab72558

gfx/2d/SourceSurfaceD2D.h