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::ApplyMask(Devel::PixelBuffer                       pixelBuffer,
  80                                      Devel::PixelBuffer                       maskPixelBuffer,
  81                                      float                                    contentScale,
  82                                      bool                                     cropToMask,
  83                                      DevelAsyncImageLoader::PreMultiplyOnLoad preMultiplyOnLoad)
  84 {
  85   if(!mIsLoadThreadStarted)
  86   {
  87     mLoadThread.Start();
  88     mIsLoadThreadStarted = true;
  89   }
  90   mLoadThread.AddTask(new LoadingTask(++mLoadTaskId, pixelBuffer, maskPixelBuffer, contentScale, cropToMask, preMultiplyOnLoad));
  91
  92   return mLoadTaskId;
  93 }
  94
  95 Toolkit::AsyncImageLoader::ImageLoadedSignalType& AsyncImageLoader::ImageLoadedSignal()
  96 {
  97   return mLoadedSignal;
  98 }
  99
 100 Toolkit::DevelAsyncImageLoader::PixelBufferLoadedSignalType& AsyncImageLoader::PixelBufferLoadedSignal()
 101 {
 102   return mPixelBufferLoadedSignal;
 103 }
 104
 105 bool AsyncImageLoader::Cancel(uint32_t loadingTaskId)
 106 {
 107   return mLoadThread.CancelTask(loadingTaskId);
 108 }
 109
 110 void AsyncImageLoader::CancelAll()
 111 {
 112   mLoadThread.CancelAll();
 113 }
 114
 115 void AsyncImageLoader::ProcessLoadedImage()
 116 {
 117   while(LoadingTask* next = mLoadThread.NextCompletedTask())
 118   {
 119     if(mPixelBufferLoadedSignal.GetConnectionCount() > 0)
 120     {
 121       mPixelBufferLoadedSignal.Emit(next->id, next->pixelBuffer);
 122     }
 123     else if(mLoadedSignal.GetConnectionCount() > 0)
 124     {
 125       PixelData pixelData;
 126       if(next->pixelBuffer)
 127       {
 128         pixelData = Devel::PixelBuffer::Convert(next->pixelBuffer);
 129       }
 130       mLoadedSignal.Emit(next->id, pixelData);
 131     }
 132
 133     delete next;
 134   }
 135 }
 136
 137 } // namespace Internal
 138
 139 } // namespace Toolkit
 140
 141 } // namespace Dali