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

   1 /*
   2  * Copyright (c) 2021 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 {
  70   if(!mIsLoadThreadStarted)
  71   {
  72     mLoadThread.Start();
  73     mIsLoadThreadStarted = true;
  74   }
  75   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, url, dimensions, fittingMode, samplingMode, orientationCorrection, preMultiplyOnLoad));
  76
  77   return mLoadTaskId;
  78 }
  79
  80 uint32_t AsyncImageLoader::LoadEncodedImageBuffer(const EncodedImageBuffer&                encodedImageBuffer,
  81                                                   ImageDimensions                          dimensions,
  82                                                   FittingMode::Type                        fittingMode,
  83                                                   SamplingMode::Type                       samplingMode,
  84                                                   bool                                     orientationCorrection,
  85                                                   DevelAsyncImageLoader::PreMultiplyOnLoad preMultiplyOnLoad)
  86 {
  87   if(!mIsLoadThreadStarted)
  88   {
  89     mLoadThread.Start();
  90     mIsLoadThreadStarted = true;
  91   }
  92   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, encodedImageBuffer, dimensions, fittingMode, samplingMode, orientationCorrection, preMultiplyOnLoad));
  93
  94   return mLoadTaskId;
  95 }
  96
  97 uint32_t AsyncImageLoader::ApplyMask(Devel::PixelBuffer                       pixelBuffer,
  98                                      Devel::PixelBuffer                       maskPixelBuffer,
  99                                      float                                    contentScale,
 100                                      bool                                     cropToMask,
 101                                      DevelAsyncImageLoader::PreMultiplyOnLoad preMultiplyOnLoad)
 102 {
 103   if(!mIsLoadThreadStarted)
 104   {
 105     mLoadThread.Start();
 106     mIsLoadThreadStarted = true;
 107   }
 108   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, pixelBuffer, maskPixelBuffer, contentScale, cropToMask, preMultiplyOnLoad));
 109
 110   return mLoadTaskId;
 111 }
 112
 113 Toolkit::AsyncImageLoader::ImageLoadedSignalType& AsyncImageLoader::ImageLoadedSignal()
 114 {
 115   return mLoadedSignal;
 116 }
 117
 118 Toolkit::DevelAsyncImageLoader::PixelBufferLoadedSignalType& AsyncImageLoader::PixelBufferLoadedSignal()
 119 {
 120   return mPixelBufferLoadedSignal;
 121 }
 122
 123 bool AsyncImageLoader::Cancel(uint32_t loadingTaskId)
 124 {
 125   return mLoadThread.CancelTask(loadingTaskId);
 126 }
 127
 128 void AsyncImageLoader::CancelAll()
 129 {
 130   mLoadThread.CancelAll();
 131 }
 132
 133 void AsyncImageLoader::ProcessLoadedImage()
 134 {
 135   while(LoadingTask* next = mLoadThread.NextCompletedTask())
 136   {
 137     if(mPixelBufferLoadedSignal.GetConnectionCount() > 0)
 138     {
 139       mPixelBufferLoadedSignal.Emit(next->id, next->pixelBuffer);
 140     }
 141     else if(mLoadedSignal.GetConnectionCount() > 0)
 142     {
 143       PixelData pixelData;
 144       if(next->pixelBuffer)
 145       {
 146         pixelData = Devel::PixelBuffer::Convert(next->pixelBuffer);
 147       }
 148       mLoadedSignal.Emit(next->id, pixelData);
 149     }
 150
 151     delete next;
 152   }
 153 }
 154
 155 } // namespace Internal
 156
 157 } // namespace Toolkit
 158
 159 } // namespace Dali