dali-toolkit/internal/image-loader/async-image-loader-impl.cpp

   1 /*
   2  * Copyright (c) 2022 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 "async-image-loader-impl.h"
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/integration-api/adaptor-framework/adaptor.h>
  23
  24 namespace Dali
  25 {
  26 namespace Toolkit
  27 {
  28 namespace Internal
  29 {
  30 AsyncImageLoader::AsyncImageLoader()
  31 : mLoadedSignal(),
  32   mLoadThread(new EventThreadCallback(MakeCallback(this, &AsyncImageLoader::ProcessLoadedImage))),
  33   mLoadTaskId(0u),
  34   mIsLoadThreadStarted(false)
  35 {
  36 }
  37
  38 AsyncImageLoader::~AsyncImageLoader()
  39 {
  40   mLoadThread.CancelAll();
  41 }
  42
  43 IntrusivePtr<AsyncImageLoader> AsyncImageLoader::New()
  44 {
  45   IntrusivePtr<AsyncImageLoader> internal = new AsyncImageLoader();
  46   return internal;
  47 }
  48
  49 uint32_t AsyncImageLoader::LoadAnimatedImage(Dali::AnimatedImageLoading               animatedImageLoading,
  50                                              uint32_t                                 frameIndex,
  51                                              DevelAsyncImageLoader::PreMultiplyOnLoad preMultiplyOnLoad)
  52 {
  53   if(!mIsLoadThreadStarted)
  54   {
  55     mLoadThread.Start();
  56     mIsLoadThreadStarted = true;
  57   }
  58   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, animatedImageLoading, frameIndex, preMultiplyOnLoad));
  59
  60   return mLoadTaskId;
  61 }
  62
  63 uint32_t AsyncImageLoader::Load(const VisualUrl&                         url,
  64                                 ImageDimensions                          dimensions,
  65                                 FittingMode::Type                        fittingMode,
  66                                 SamplingMode::Type                       samplingMode,
  67                                 bool                                     orientationCorrection,
  68                                 DevelAsyncImageLoader::PreMultiplyOnLoad preMultiplyOnLoad,
  69                                 bool                                     loadPlanes)
  70 {
  71   if(!mIsLoadThreadStarted)
  72   {
  73     mLoadThread.Start();
  74     mIsLoadThreadStarted = true;
  75   }
  76   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, url, dimensions, fittingMode, samplingMode, orientationCorrection, preMultiplyOnLoad, loadPlanes));
  77
  78   return mLoadTaskId;
  79 }
  80
  81 uint32_t AsyncImageLoader::LoadEncodedImageBuffer(const EncodedImageBuffer&                encodedImageBuffer,
  82                                                   ImageDimensions                          dimensions,
  83                                                   FittingMode::Type                        fittingMode,
  84                                                   SamplingMode::Type                       samplingMode,
  85                                                   bool                                     orientationCorrection,
  86                                                   DevelAsyncImageLoader::PreMultiplyOnLoad preMultiplyOnLoad)
  87 {
  88   if(!mIsLoadThreadStarted)
  89   {
  90     mLoadThread.Start();
  91     mIsLoadThreadStarted = true;
  92   }
  93   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, encodedImageBuffer, dimensions, fittingMode, samplingMode, orientationCorrection, preMultiplyOnLoad));
  94
  95   return mLoadTaskId;
  96 }
  97
  98 uint32_t AsyncImageLoader::ApplyMask(Devel::PixelBuffer                       pixelBuffer,
  99                                      Devel::PixelBuffer                       maskPixelBuffer,
 100                                      float                                    contentScale,
 101                                      bool                                     cropToMask,
 102                                      DevelAsyncImageLoader::PreMultiplyOnLoad preMultiplyOnLoad)
 103 {
 104   if(!mIsLoadThreadStarted)
 105   {
 106     mLoadThread.Start();
 107     mIsLoadThreadStarted = true;
 108   }
 109   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, pixelBuffer, maskPixelBuffer, contentScale, cropToMask, preMultiplyOnLoad));
 110
 111   return mLoadTaskId;
 112 }
 113
 114 Toolkit::AsyncImageLoader::ImageLoadedSignalType& AsyncImageLoader::ImageLoadedSignal()
 115 {
 116   return mLoadedSignal;
 117 }
 118
 119 Toolkit::DevelAsyncImageLoader::PixelBufferLoadedSignalType& AsyncImageLoader::PixelBufferLoadedSignal()
 120 {
 121   return mPixelBufferLoadedSignal;
 122 }
 123
 124 bool AsyncImageLoader::Cancel(uint32_t loadingTaskId)
 125 {
 126   return mLoadThread.CancelTask(loadingTaskId);
 127 }
 128
 129 void AsyncImageLoader::CancelAll()
 130 {
 131   mLoadThread.CancelAll();
 132 }
 133
 134 void AsyncImageLoader::ProcessLoadedImage()
 135 {
 136   while(LoadingTask* next = mLoadThread.NextCompletedTask())
 137   {
 138     if(mPixelBufferLoadedSignal.GetConnectionCount() > 0)
 139     {
 140       mPixelBufferLoadedSignal.Emit(next->id, next->pixelBuffers);
 141     }
 142     else if(mLoadedSignal.GetConnectionCount() > 0)
 143     {
 144       PixelData pixelData;
 145       if(!next->pixelBuffers.empty())
 146       {
 147         pixelData = Devel::PixelBuffer::Convert(next->pixelBuffers[0]);
 148       }
 149       mLoadedSignal.Emit(next->id, pixelData);
 150     }
 151
 152     delete next;
 153   }
 154 }
 155
 156 } // namespace Internal
 157
 158 } // namespace Toolkit
 159
 160 } // namespace Dali