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

   1 /*
   2  * Copyright (c) 2015 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 FrameBufferImagePtr FrameBufferImage::New( unsigned int width,
  38                                            unsigned int height,
  39                                            Pixel::Format pixelFormat,
  40                                            RenderBuffer::Format bufferformat )
  41 {
  42   FrameBufferImagePtr image = new FrameBufferImage( width, height, pixelFormat, bufferformat );
  43   image->Initialize();
  44   return image;
  45 }
  46
  47 FrameBufferImagePtr FrameBufferImage::New( NativeImageInterface& nativeImage )
  48 {
  49   FrameBufferImagePtr image = new FrameBufferImage( nativeImage );
  50   image->Initialize();
  51   return image;
  52 }
  53
  54
  55 FrameBufferImage::FrameBufferImage( unsigned int width,
  56                                     unsigned int height,
  57                                     Pixel::Format pixelFormat,
  58                                     RenderBuffer::Format bufferformat )
  59 : Image(),
  60   mNativeImage(0),
  61   mPixelFormat( pixelFormat ),
  62   mBufferFormat( bufferformat ),
  63   mIsNativeFbo( false )
  64 {
  65   mWidth  = width;
  66   mHeight = height;
  67 }
  68
  69 FrameBufferImage::FrameBufferImage( NativeImageInterface& nativeImage )
  70 : Image(),
  71   mNativeImage( &nativeImage ),
  72   mPixelFormat( Pixel::FIRST_VALID_PIXEL_FORMAT ),
  73   mBufferFormat( RenderBuffer::COLOR ),
  74   mIsNativeFbo( true )
  75 {
  76   mWidth = nativeImage.GetWidth();
  77   mHeight = nativeImage.GetHeight();
  78 }
  79
  80 void FrameBufferImage::Connect()
  81 {
  82   ++mConnectionCount;
  83
  84   if (mConnectionCount == 1)
  85   {
  86     // ticket was thrown away when related actors went offstage
  87     if (!mTicket)
  88     {
  89       ResourceClient& resourceClient = ThreadLocalStorage::Get().GetResourceClient();
  90       if (mNativeImage)
  91       {
  92         mTicket = resourceClient.AddFrameBufferImage(*mNativeImage);
  93         mTicket->AddObserver(*this);
  94       }
  95       else
  96       {
  97         mTicket = resourceClient.AddFrameBufferImage(mWidth, mHeight, mPixelFormat, mBufferFormat);
  98         mTicket->AddObserver(*this);
  99       }
 100     }
 101   }
 102 }
 103
 104 void FrameBufferImage::Disconnect()
 105 {
 106   if(!mTicket)
 107   {
 108     return;
 109   }
 110
 111   DALI_ASSERT_DEBUG(mConnectionCount > 0);
 112   --mConnectionCount;
 113   if (mConnectionCount == 0 && mReleasePolicy == Dali::Image::UNUSED)
 114   {
 115     // release image memory when it's not visible anymore (decrease ref. count of texture)
 116     mTicket->RemoveObserver(*this);
 117     mTicket.Reset();
 118   }
 119 }
 120
 121 bool FrameBufferImage::IsNativeFbo() const
 122 {
 123   return mIsNativeFbo;
 124 }
 125 FrameBufferImage::~FrameBufferImage()
 126 {
 127 }
 128
 129 } // namespace Internal
 130
 131 } // namespace Dali