dali/internal/event/images/frame-buffer-image-impl.cpp

   1 /*
   2  * Copyright (c) 2014 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali/internal/event/images/frame-buffer-image-impl.h>
  20
  21 // INTERNAL INCLUDES
  22 #include <dali/public-api/object/type-registry.h>
  23 #include <dali/internal/event/common/thread-local-storage.h>
  24 #include <dali/internal/event/resources/resource-client.h>
  25
  26 namespace Dali
  27 {
  28
  29 namespace Internal
  30 {
  31
  32 namespace
  33 {
  34 TypeRegistration mType( typeid( Dali::FrameBufferImage ), typeid( Dali::Image ), NULL );
  35 } // unnamed namespace
  36
  37 FrameBufferImage::~FrameBufferImage()
  38 {
  39 }
  40
  41 FrameBufferImagePtr  FrameBufferImage::New(unsigned int width, unsigned int height, Pixel::Format pixelFormat, ReleasePolicy releasePolicy)
  42 {
  43   FrameBufferImagePtr image = new FrameBufferImage(width, height, pixelFormat, releasePolicy);
  44   image->Initialize();
  45   return image;
  46 }
  47
  48 FrameBufferImagePtr  FrameBufferImage::New( NativeImageInterface& nativeImage )
  49 {
  50   FrameBufferImagePtr image = new FrameBufferImage(nativeImage);
  51   image->Initialize();
  52   return image;
  53 }
  54
  55 FrameBufferImagePtr  FrameBufferImage::New( NativeImageInterface& nativeImage, ReleasePolicy releasePolicy )
  56 {
  57   FrameBufferImagePtr image = new FrameBufferImage(nativeImage, releasePolicy);
  58   image->Initialize();
  59   return image;
  60 }
  61
  62 FrameBufferImage::FrameBufferImage(unsigned int width, unsigned int height, Pixel::Format pixelFormat, ReleasePolicy releasePolicy)
  63 : Image(releasePolicy),
  64   mPixelFormat(pixelFormat)
  65 {
  66   mWidth  = width;
  67   mHeight = height;
  68 }
  69
  70 FrameBufferImage::FrameBufferImage( NativeImageInterface& nativeImage )
  71 : Image(),
  72   mNativeImage(&nativeImage)
  73 {
  74   mWidth = nativeImage.GetWidth();
  75   mHeight = nativeImage.GetHeight();
  76 }
  77
  78 FrameBufferImage::FrameBufferImage( NativeImageInterface& nativeImage, ReleasePolicy releasePolicy )
  79 : Image(releasePolicy),
  80   mNativeImage(&nativeImage)
  81 {
  82   mWidth = nativeImage.GetWidth();
  83   mHeight = nativeImage.GetHeight();
  84 }
  85
  86 void FrameBufferImage::Connect()
  87 {
  88   ++mConnectionCount;
  89
  90   if (mConnectionCount == 1)
  91   {
  92     // ticket was thrown away when related actors went offstage
  93     if (!mTicket)
  94     {
  95       ResourceClient& resourceClient = ThreadLocalStorage::Get().GetResourceClient();
  96       if (mNativeImage)
  97       {
  98         mTicket = resourceClient.AddFrameBufferImage(*mNativeImage);
  99         mTicket->AddObserver(*this);
 100       }
 101       else
 102       {
 103         mTicket = resourceClient.AddFrameBufferImage(mWidth, mHeight, mPixelFormat);
 104         mTicket->AddObserver(*this);
 105       }
 106     }
 107   }
 108 }
 109
 110 void FrameBufferImage::Disconnect()
 111 {
 112   if(!mTicket)
 113   {
 114     return;
 115   }
 116
 117   DALI_ASSERT_DEBUG(mConnectionCount > 0);
 118   --mConnectionCount;
 119   if (mConnectionCount == 0 && mReleasePolicy == Dali::Image::UNUSED)
 120   {
 121     // release image memory when it's not visible anymore (decrease ref. count of texture)
 122     mTicket->RemoveObserver(*this);
 123     mTicket.Reset();
 124   }
 125 }
 126
 127 } // namespace Internal
 128
 129 } // namespace Dali