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/internal/event/common/thread-local-storage.h>
  23 #include <dali/internal/event/resources/resource-client.h>
  24
  25 namespace Dali
  26 {
  27
  28 namespace Internal
  29 {
  30
  31 FrameBufferImage::~FrameBufferImage()
  32 {
  33 }
  34
  35 FrameBufferImage::FrameBufferImage(unsigned int width, unsigned int height, Pixel::Format pixelFormat, ReleasePolicy releasePolicy)
  36 : Image(Dali::Image::Immediate, releasePolicy),
  37   mPixelFormat(pixelFormat)
  38 {
  39   mWidth  = width;
  40   mHeight = height;
  41 }
  42
  43 FrameBufferImage::FrameBufferImage( NativeImage& nativeImage )
  44 : Image(Dali::Image::Immediate),
  45   mNativeImage(&nativeImage),
  46   mPixelFormat(nativeImage.GetPixelFormat())
  47 {
  48   mWidth = nativeImage.GetWidth();
  49   mHeight = nativeImage.GetHeight();
  50 }
  51
  52 FrameBufferImage::FrameBufferImage( NativeImage& nativeImage, ReleasePolicy releasePolicy )
  53 : Image(Dali::Image::Immediate, releasePolicy),
  54   mNativeImage(&nativeImage),
  55   mPixelFormat(nativeImage.GetPixelFormat())
  56 {
  57   mWidth = nativeImage.GetWidth();
  58   mHeight = nativeImage.GetHeight();
  59 }
  60
  61 void FrameBufferImage::Connect()
  62 {
  63   ++mConnectionCount;
  64
  65   if (mConnectionCount == 1)
  66   {
  67     // ticket was thrown away when related actors went offstage
  68     if (!mTicket)
  69     {
  70       ResourceClient& resourceClient = ThreadLocalStorage::Get().GetResourceClient();
  71       if (mNativeImage)
  72       {
  73         mTicket = resourceClient.AddFrameBufferImage(*mNativeImage);
  74         mTicket->AddObserver(*this);
  75       }
  76       else
  77       {
  78         mTicket = resourceClient.AddFrameBufferImage(mWidth, mHeight, mPixelFormat);
  79         mTicket->AddObserver(*this);
  80       }
  81     }
  82   }
  83 }
  84
  85 void FrameBufferImage::Disconnect()
  86 {
  87   if(!mTicket)
  88   {
  89     return;
  90   }
  91
  92   DALI_ASSERT_DEBUG(mConnectionCount > 0);
  93   --mConnectionCount;
  94   if (mConnectionCount == 0 && mReleasePolicy == Dali::Image::Unused)
  95   {
  96     // release image memory when it's not visible anymore (decrease ref. count of texture)
  97     mTicket->RemoveObserver(*this);
  98     mTicket.Reset();
  99   }
 100 }
 101
 102 } // namespace Internal
 103
 104 } // namespace Dali