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 {
  52   if(!mIsLoadThreadStarted)
  53   {
  54     mLoadThread.Start();
  55     mIsLoadThreadStarted = true;
  56   }
  57   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, animatedImageLoading, frameIndex));
  58
  59   return mLoadTaskId;
  60 }
  61
  62 uint32_t AsyncImageLoader::Load(const VisualUrl&                         url,
  63                                 ImageDimensions                          dimensions,
  64                                 FittingMode::Type                        fittingMode,
  65                                 SamplingMode::Type                       samplingMode,
  66                                 bool                                     orientationCorrection,
  67                                 DevelAsyncImageLoader::PreMultiplyOnLoad preMultiplyOnLoad)
  68 {
  69   if(!mIsLoadThreadStarted)
  70   {
  71     mLoadThread.Start();
  72     mIsLoadThreadStarted = true;
  73   }
  74   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, url, dimensions, fittingMode, samplingMode, orientationCorrection, preMultiplyOnLoad));
  75
  76   return mLoadTaskId;
  77 }
  78
  79 uint32_t AsyncImageLoader::LoadEncodedImageBuffer(const EncodedImageBuffer&                encodedImageBuffer,
  80                                                   ImageDimensions                          dimensions,
  81                                                   FittingMode::Type                        fittingMode,
  82                                                   SamplingMode::Type                       samplingMode,
  83                                                   bool                                     orientationCorrection,
  84                                                   DevelAsyncImageLoader::PreMultiplyOnLoad preMultiplyOnLoad)
  85 {
  86   if(!mIsLoadThreadStarted)
  87   {
  88     mLoadThread.Start();
  89     mIsLoadThreadStarted = true;
  90   }
  91   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, encodedImageBuffer, dimensions, fittingMode, samplingMode, orientationCorrection, preMultiplyOnLoad));
  92
  93   return mLoadTaskId;
  94 }
  95
  96 uint32_t AsyncImageLoader::ApplyMask(Devel::PixelBuffer                       pixelBuffer,
  97                                      Devel::PixelBuffer                       maskPixelBuffer,
  98                                      float                                    contentScale,
  99                                      bool                                     cropToMask,
 100                                      DevelAsyncImageLoader::PreMultiplyOnLoad preMultiplyOnLoad)
 101 {
 102   if(!mIsLoadThreadStarted)
 103   {
 104     mLoadThread.Start();
 105     mIsLoadThreadStarted = true;
 106   }
 107   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, pixelBuffer, maskPixelBuffer, contentScale, cropToMask, preMultiplyOnLoad));
 108
 109   return mLoadTaskId;
 110 }
 111
 112 Toolkit::AsyncImageLoader::ImageLoadedSignalType& AsyncImageLoader::ImageLoadedSignal()
 113 {
 114   return mLoadedSignal;
 115 }
 116
 117 Toolkit::DevelAsyncImageLoader::PixelBufferLoadedSignalType& AsyncImageLoader::PixelBufferLoadedSignal()
 118 {
 119   return mPixelBufferLoadedSignal;
 120 }
 121
 122 bool AsyncImageLoader::Cancel(uint32_t loadingTaskId)
 123 {
 124   return mLoadThread.CancelTask(loadingTaskId);
 125 }
 126
 127 void AsyncImageLoader::CancelAll()
 128 {
 129   mLoadThread.CancelAll();
 130 }
 131
 132 void AsyncImageLoader::ProcessLoadedImage()
 133 {
 134   while(LoadingTask* next = mLoadThread.NextCompletedTask())
 135   {
 136     if(mPixelBufferLoadedSignal.GetConnectionCount() > 0)
 137     {
 138       mPixelBufferLoadedSignal.Emit(next->id, next->pixelBuffer);
 139     }
 140     else if(mLoadedSignal.GetConnectionCount() > 0)
 141     {
 142       PixelData pixelData;
 143       if(next->pixelBuffer)
 144       {
 145         pixelData = Devel::PixelBuffer::Convert(next->pixelBuffer);
 146       }
 147       mLoadedSignal.Emit(next->id, pixelData);
 148     }
 149
 150     delete next;
 151   }
 152 }
 153
 154 } // namespace Internal
 155
 156 } // namespace Toolkit
 157
 158 } // namespace Dali