LCOV - code coverage report
Current view: directory - gfx/layers/opengl - ImageLayerOGL.h (source / functions) Found Hit Coverage
Test: app.info Lines: 23 0 0.0 %
Date: 2012-06-02 Functions: 19 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2                 :  * ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Corporation code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is Mozilla Foundation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2009
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Bas Schouten <bschouten@mozilla.org>
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #ifndef GFX_IMAGELAYEROGL_H
      39                 : #define GFX_IMAGELAYEROGL_H
      40                 : 
      41                 : #include "mozilla/layers/PLayers.h"
      42                 : #include "mozilla/layers/ShadowLayers.h"
      43                 : 
      44                 : #include "LayerManagerOGL.h"
      45                 : #include "ImageLayers.h"
      46                 : #include "yuv_convert.h"
      47                 : #include "mozilla/Mutex.h"
      48                 : 
      49                 : namespace mozilla {
      50                 : namespace layers {
      51                 : 
      52                 : /**
      53                 :  * This class wraps a GL texture. It includes a GLContext reference
      54                 :  * so we can use to free the texture when destroyed. The implementation
      55                 :  * makes sure to always free the texture on the main thread, even if the
      56                 :  * destructor runs on another thread.
      57                 :  *
      58                 :  * We ensure that the GLContext reference is only addrefed and released
      59                 :  * on the main thread, although it uses threadsafe recounting so we don't
      60                 :  * really have to.
      61                 :  *
      62                 :  * Initially the texture is not allocated --- it's in a "null" state.
      63                 :  */
      64                 : class GLTexture {
      65                 :   typedef mozilla::gl::GLContext GLContext;
      66                 : 
      67                 : public:
      68               0 :   GLTexture() : mTexture(0) {}
      69               0 :   ~GLTexture() { Release(); }
      70                 : 
      71                 :   /**
      72                 :    * Allocate the texture. This can only be called on the main thread.
      73                 :    */
      74                 :   void Allocate(GLContext *aContext);
      75                 :   /**
      76                 :    * Move the state of aOther to this GLTexture. If this GLTexture currently
      77                 :    * has a texture, it is released. This can be called on any thread.
      78                 :    */
      79                 :   void TakeFrom(GLTexture *aOther);
      80                 : 
      81               0 :   bool IsAllocated() { return mTexture != 0; }
      82               0 :   GLuint GetTextureID() { return mTexture; }
      83               0 :   GLContext *GetGLContext() { return mContext; }
      84                 : 
      85                 : private:
      86                 :   void Release();
      87                 : 
      88                 :   nsRefPtr<GLContext> mContext;
      89                 :   GLuint mTexture;
      90                 : };
      91                 : 
      92                 : /**
      93                 :  * A RecycleBin is owned by an ImageLayer. We store textures in it that we
      94                 :  * want to recycle from one image to the next. It's a separate object from 
      95                 :  * ImageContainer because images need to store a strong ref to their RecycleBin
      96                 :  * and we must avoid creating a reference loop between an ImageContainer and
      97                 :  * its active image.
      98                 :  */
      99               0 : class TextureRecycleBin {
     100               0 :   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(TextureRecycleBin)
     101                 : 
     102                 :   typedef mozilla::gl::GLContext GLContext;
     103                 : 
     104                 : public:
     105                 :   TextureRecycleBin();
     106                 : 
     107                 :   enum TextureType {
     108                 :     TEXTURE_Y,
     109                 :     TEXTURE_C
     110                 :   };
     111                 : 
     112                 :   void RecycleTexture(GLTexture *aTexture, TextureType aType,
     113                 :                       const gfxIntSize& aSize);
     114                 :   void GetTexture(TextureType aType, const gfxIntSize& aSize,
     115                 :                   GLContext *aContext, GLTexture *aOutTexture);
     116                 : 
     117                 : private:
     118                 :   typedef mozilla::Mutex Mutex;
     119                 : 
     120                 :   // This protects mRecycledBuffers, mRecycledBufferSize, mRecycledTextures
     121                 :   // and mRecycledTextureSizes
     122                 :   Mutex mLock;
     123                 : 
     124                 :   nsTArray<GLTexture> mRecycledTextures[2];
     125                 :   gfxIntSize mRecycledTextureSizes[2];
     126                 : };
     127                 : 
     128                 : class THEBES_API ImageLayerOGL : public ImageLayer,
     129                 :                                  public LayerOGL
     130                 : {
     131                 : public:
     132                 :   ImageLayerOGL(LayerManagerOGL *aManager);
     133               0 :   ~ImageLayerOGL() { Destroy(); }
     134                 : 
     135                 :   // LayerOGL Implementation
     136               0 :   virtual void Destroy() { mDestroyed = true; }
     137                 :   virtual Layer* GetLayer();
     138                 : 
     139                 :   virtual void RenderLayer(int aPreviousFrameBuffer,
     140                 :                            const nsIntPoint& aOffset);
     141               0 :   virtual void CleanupResources() {}
     142                 : 
     143                 :   void AllocateTexturesYCbCr(PlanarYCbCrImage *aImage);
     144                 :   void AllocateTexturesCairo(CairoImage *aImage);
     145                 : 
     146                 : protected:
     147                 :   nsRefPtr<TextureRecycleBin> mTextureRecycleBin;
     148                 : };
     149                 : 
     150                 : struct THEBES_API PlanarYCbCrOGLBackendData : public ImageBackendData
     151               0 : {
     152               0 :   ~PlanarYCbCrOGLBackendData()
     153               0 :   {
     154               0 :     if (HasTextures()) {
     155               0 :       mTextureRecycleBin->RecycleTexture(&mTextures[0], TextureRecycleBin::TEXTURE_Y, mYSize);
     156               0 :       mTextureRecycleBin->RecycleTexture(&mTextures[1], TextureRecycleBin::TEXTURE_C, mCbCrSize);
     157               0 :       mTextureRecycleBin->RecycleTexture(&mTextures[2], TextureRecycleBin::TEXTURE_C, mCbCrSize);
     158                 :     }
     159               0 :   }
     160                 : 
     161               0 :   bool HasTextures()
     162                 :   {
     163               0 :     return mTextures[0].IsAllocated() && mTextures[1].IsAllocated() &&
     164               0 :            mTextures[2].IsAllocated();
     165                 :   }
     166                 : 
     167                 :   GLTexture mTextures[3];
     168                 :   gfxIntSize mYSize, mCbCrSize;
     169                 :   nsRefPtr<TextureRecycleBin> mTextureRecycleBin;
     170                 : };
     171                 : 
     172                 : 
     173                 : struct CairoOGLBackendData : public ImageBackendData
     174               0 : {
     175               0 :   CairoOGLBackendData() : mLayerProgram(gl::RGBALayerProgramType), mTiling(false) {}
     176                 :   void SetTiling(bool aTiling);
     177                 :   GLTexture mTexture;
     178                 :   gl::ShaderProgramType mLayerProgram;
     179                 :   bool mTiling;
     180                 : };
     181                 : 
     182                 : class ShadowImageLayerOGL : public ShadowImageLayer,
     183                 :                             public LayerOGL
     184                 : {
     185                 :   typedef gl::TextureImage TextureImage;
     186                 : 
     187                 : public:
     188                 :   ShadowImageLayerOGL(LayerManagerOGL* aManager);
     189                 :   virtual ~ShadowImageLayerOGL();
     190                 : 
     191                 :   // ShadowImageLayer impl
     192                 :   virtual void Swap(const SharedImage& aFront,
     193                 :                     SharedImage* aNewBack);
     194                 : 
     195                 :   virtual void Disconnect();
     196                 : 
     197                 :   // LayerOGL impl
     198                 :   virtual void Destroy();
     199                 : 
     200                 :   virtual Layer* GetLayer();
     201                 : 
     202                 :   virtual void RenderLayer(int aPreviousFrameBuffer,
     203                 :                            const nsIntPoint& aOffset);
     204                 : 
     205                 :   virtual void CleanupResources();
     206                 : 
     207                 : private:
     208                 :   bool Init(const SharedImage& aFront);
     209                 : 
     210                 :   nsRefPtr<TextureImage> mTexImage;
     211                 :   GLTexture mYUVTexture[3];
     212                 :   gfxIntSize mSize;
     213                 :   gfxIntSize mCbCrSize;
     214                 :   nsIntRect mPictureRect;
     215                 : };
     216                 : 
     217                 : } /* layers */
     218                 : } /* mozilla */
     219                 : #endif /* GFX_IMAGELAYEROGL_H */

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