dali-toolkit/internal/texture-manager/texture-manager-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 "texture-manager-impl.h"
  20
  21 // EXTERNAL HEADERS
  22 #include <dali/devel-api/adaptor-framework/environment-variable.h>
  23 #include <dali/devel-api/adaptor-framework/image-loading.h>
  24 #include <dali/devel-api/adaptor-framework/pixel-buffer.h>
  25 #include <dali/integration-api/debug.h>
  26 #include <dali/public-api/rendering/geometry.h>
  27
  28 // INTERNAL HEADERS
  29 #include <dali-toolkit/internal/texture-manager/texture-async-loading-helper.h>
  30 #include <dali-toolkit/internal/texture-manager/texture-cache-manager.h>
  31 #include <dali-toolkit/internal/visuals/image-atlas-manager.h>
  32 #include <dali-toolkit/internal/visuals/rendering-addon.h>
  33
  34 namespace
  35 {
  36 constexpr auto INITIAL_HASH_NUMBER                     = size_t{0u};
  37 constexpr auto DEFAULT_NUMBER_OF_LOCAL_LOADER_THREADS  = size_t{4u};
  38 constexpr auto DEFAULT_NUMBER_OF_REMOTE_LOADER_THREADS = size_t{8u};
  39
  40 constexpr auto NUMBER_OF_LOCAL_LOADER_THREADS_ENV  = "DALI_TEXTURE_LOCAL_THREADS";
  41 constexpr auto NUMBER_OF_REMOTE_LOADER_THREADS_ENV = "DALI_TEXTURE_REMOTE_THREADS";
  42
  43 size_t GetNumberOfThreads(const char* environmentVariable, size_t defaultValue)
  44 {
  45   using Dali::EnvironmentVariable::GetEnvironmentVariable;
  46   auto           numberString          = GetEnvironmentVariable(environmentVariable);
  47   auto           numberOfThreads       = numberString ? std::strtoul(numberString, nullptr, 10) : 0;
  48   constexpr auto MAX_NUMBER_OF_THREADS = 100u;
  49   DALI_ASSERT_DEBUG(numberOfThreads < MAX_NUMBER_OF_THREADS);
  50   return (numberOfThreads > 0 && numberOfThreads < MAX_NUMBER_OF_THREADS) ? numberOfThreads : defaultValue;
  51 }
  52
  53 size_t GetNumberOfLocalLoaderThreads()
  54 {
  55   return GetNumberOfThreads(NUMBER_OF_LOCAL_LOADER_THREADS_ENV, DEFAULT_NUMBER_OF_LOCAL_LOADER_THREADS);
  56 }
  57
  58 size_t GetNumberOfRemoteLoaderThreads()
  59 {
  60   return GetNumberOfThreads(NUMBER_OF_REMOTE_LOADER_THREADS_ENV, DEFAULT_NUMBER_OF_REMOTE_LOADER_THREADS);
  61 }
  62
  63 } // namespace
  64
  65 namespace Dali
  66 {
  67 namespace Toolkit
  68 {
  69 namespace Internal
  70 {
  71 #ifdef DEBUG_ENABLED
  72 // Define logfilter Internal namespace level so other files (e.g. texture-cache-manager.cpp) can also use this filter.
  73 Debug::Filter* gTextureManagerLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_TEXTURE_MANAGER");
  74
  75 // clang-format off
  76 #define GET_LOAD_STATE_STRING(loadState) \
  77   loadState == TextureManagerType::LoadState::NOT_STARTED      ? "NOT_STARTED"      : \
  78   loadState == TextureManagerType::LoadState::LOADING          ? "LOADING"          : \
  79   loadState == TextureManagerType::LoadState::LOAD_FINISHED    ? "LOAD_FINISHED"    : \
  80   loadState == TextureManagerType::LoadState::WAITING_FOR_MASK ? "WAITING_FOR_MASK" : \
  81   loadState == TextureManagerType::LoadState::MASK_APPLYING    ? "MASK_APPLYING"    : \
  82   loadState == TextureManagerType::LoadState::MASK_APPLIED     ? "MASK_APPLIED"     : \
  83   loadState == TextureManagerType::LoadState::UPLOADED         ? "UPLOADED"         : \
  84   loadState == TextureManagerType::LoadState::CANCELLED        ? "CANCELLED"        : \
  85   loadState == TextureManagerType::LoadState::LOAD_FAILED      ? "LOAD_FAILED"      : \
  86                                                                  "Unknown"
  87 // clang-format on
  88 #endif
  89
  90 namespace
  91 {
  92 const uint32_t DEFAULT_ATLAS_SIZE(1024u);               ///< This size can fit 8 by 8 images of average size 128 * 128
  93 const Vector4  FULL_ATLAS_RECT(0.0f, 0.0f, 1.0f, 1.0f); ///< UV Rectangle that covers the full Texture
  94
  95 void PreMultiply(Devel::PixelBuffer pixelBuffer, TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
  96 {
  97   if(Pixel::HasAlpha(pixelBuffer.GetPixelFormat()))
  98   {
  99     if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 100     {
 101       pixelBuffer.MultiplyColorByAlpha();
 102     }
 103   }
 104   else
 105   {
 106     preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 107   }
 108 }
 109
 110 } // Anonymous namespace
 111
 112 TextureManager::MaskingData::MaskingData()
 113 : mAlphaMaskUrl(),
 114   mAlphaMaskId(INVALID_TEXTURE_ID),
 115   mContentScaleFactor(1.0f),
 116   mCropToMask(true),
 117   mPreappliedMasking(true),
 118   mMaskImageLoadingFailed(false)
 119 {
 120 }
 121
 122 TextureManager::TextureManager()
 123 : mTextureCacheManager(),
 124   mAsyncLocalLoaders(GetNumberOfLocalLoaderThreads(), [&]()
 125                      { return TextureAsyncLoadingHelper(*this); }),
 126   mAsyncRemoteLoaders(GetNumberOfRemoteLoaderThreads(), [&]()
 127                       { return TextureAsyncLoadingHelper(*this); }),
 128   mLifecycleObservers(),
 129   mLoadQueue(),
 130   mRemoveQueue(),
 131   mQueueLoadFlag(false)
 132 {
 133   // Initialize the AddOn
 134   RenderingAddOn::Get();
 135 }
 136
 137 TextureManager::~TextureManager()
 138 {
 139   for(auto iter = mLifecycleObservers.Begin(), endIter = mLifecycleObservers.End(); iter != endIter; ++iter)
 140   {
 141     (*iter)->TextureManagerDestroyed();
 142   }
 143 }
 144
 145 TextureSet TextureManager::LoadAnimatedImageTexture(
 146   const VisualUrl&                url,
 147   Dali::AnimatedImageLoading      animatedImageLoading,
 148   const uint32_t&                 frameIndex,
 149   TextureManager::TextureId&      textureId,
 150   MaskingDataPointer&             maskInfo,
 151   const Dali::SamplingMode::Type& samplingMode,
 152   const Dali::WrapMode::Type&     wrapModeU,
 153   const Dali::WrapMode::Type&     wrapModeV,
 154   const bool&                     synchronousLoading,
 155   TextureUploadObserver*          textureObserver,
 156   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 157 {
 158   TextureSet textureSet;
 159
 160   if(synchronousLoading)
 161   {
 162     Devel::PixelBuffer pixelBuffer;
 163     if(animatedImageLoading)
 164     {
 165       pixelBuffer = animatedImageLoading.LoadFrame(frameIndex);
 166     }
 167     if(!pixelBuffer)
 168     {
 169       DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous loading is failed\n");
 170     }
 171     else
 172     {
 173       Texture maskTexture;
 174       if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 175       {
 176         Devel::PixelBuffer maskPixelBuffer = LoadImageFromFile(maskInfo->mAlphaMaskUrl.GetUrl(), ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, true);
 177         if(maskPixelBuffer)
 178         {
 179           if(!maskInfo->mPreappliedMasking)
 180           {
 181             PixelData maskPixelData = Devel::PixelBuffer::Convert(maskPixelBuffer); // takes ownership of buffer
 182             maskTexture             = Texture::New(Dali::TextureType::TEXTURE_2D, maskPixelData.GetPixelFormat(), maskPixelData.GetWidth(), maskPixelData.GetHeight());
 183             maskTexture.Upload(maskPixelData);
 184           }
 185           else
 186           {
 187             pixelBuffer.ApplyMask(maskPixelBuffer, maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 188           }
 189         }
 190         else
 191         {
 192           DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous mask image loading is failed\n");
 193         }
 194       }
 195
 196       if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 197       {
 198         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 199       }
 200
 201       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer); // takes ownership of buffer
 202       if(!textureSet)
 203       {
 204         Texture texture = Texture::New(Dali::TextureType::TEXTURE_2D, pixelData.GetPixelFormat(), pixelData.GetWidth(), pixelData.GetHeight());
 205         texture.Upload(pixelData);
 206         textureSet = TextureSet::New();
 207         textureSet.SetTexture(0u, texture);
 208         if(maskTexture)
 209         {
 210           textureSet.SetTexture(1u, maskTexture);
 211         }
 212       }
 213     }
 214   }
 215   else
 216   {
 217     TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 218     float     contentScaleFactor = 1.0f;
 219     bool      cropToMask         = false;
 220     if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 221     {
 222       maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? StorageType::KEEP_PIXEL_BUFFER : StorageType::KEEP_TEXTURE);
 223       alphaMaskId            = maskInfo->mAlphaMaskId;
 224       if(maskInfo->mPreappliedMasking)
 225       {
 226         contentScaleFactor = maskInfo->mContentScaleFactor;
 227         cropToMask         = maskInfo->mCropToMask;
 228       }
 229     }
 230
 231     textureId = RequestLoadInternal(url, alphaMaskId, contentScaleFactor, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::BOX_THEN_LINEAR, UseAtlas::NO_ATLAS, cropToMask, StorageType::UPLOAD_TO_TEXTURE, textureObserver, true, TextureManager::ReloadPolicy::CACHED, preMultiplyOnLoad, animatedImageLoading, frameIndex, false);
 232
 233     TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 234     if(loadState == TextureManager::LoadState::UPLOADED)
 235     {
 236       // LoadComplete has already been called - keep the same texture set
 237       textureSet = GetTextureSet(textureId);
 238     }
 239   }
 240
 241   if(textureSet)
 242   {
 243     Sampler sampler = Sampler::New();
 244     sampler.SetWrapMode(wrapModeU, wrapModeV);
 245     textureSet.SetSampler(0u, sampler);
 246   }
 247
 248   return textureSet;
 249 }
 250
 251 Devel::PixelBuffer TextureManager::LoadPixelBuffer(
 252   const VisualUrl&                url,
 253   const Dali::ImageDimensions&    desiredSize,
 254   const Dali::FittingMode::Type&  fittingMode,
 255   const Dali::SamplingMode::Type& samplingMode,
 256   const bool&                     synchronousLoading,
 257   TextureUploadObserver*          textureObserver,
 258   const bool&                     orientationCorrection,
 259   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 260 {
 261   Devel::PixelBuffer pixelBuffer;
 262   if(synchronousLoading)
 263   {
 264     if(url.IsValid())
 265     {
 266       if(url.IsBufferResource())
 267       {
 268         const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 269         if(encodedImageBuffer)
 270         {
 271           pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 272         }
 273       }
 274       else
 275       {
 276         pixelBuffer = LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 277       }
 278       if(pixelBuffer && preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 279       {
 280         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 281       }
 282     }
 283   }
 284   else
 285   {
 286     RequestLoadInternal(url, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, UseAtlas::NO_ATLAS, false, StorageType::RETURN_PIXEL_BUFFER, textureObserver, orientationCorrection, TextureManager::ReloadPolicy::FORCED, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, false);
 287   }
 288
 289   return pixelBuffer;
 290 }
 291
 292 TextureSet TextureManager::LoadTexture(
 293   const VisualUrl&                    url,
 294   const Dali::ImageDimensions&        desiredSize,
 295   const Dali::FittingMode::Type&      fittingMode,
 296   const Dali::SamplingMode::Type&     samplingMode,
 297   MaskingDataPointer&                 maskInfo,
 298   const bool&                         synchronousLoading,
 299   TextureManager::TextureId&          textureId,
 300   Vector4&                            textureRect,
 301   Dali::ImageDimensions&              textureRectSize,
 302   bool&                               atlasingStatus,
 303   bool&                               loadingStatus,
 304   const Dali::WrapMode::Type&         wrapModeU,
 305   const Dali::WrapMode::Type&         wrapModeV,
 306   TextureUploadObserver*              textureObserver,
 307   AtlasUploadObserver*                atlasObserver,
 308   ImageAtlasManagerPtr                imageAtlasManager,
 309   const bool&                         orientationCorrection,
 310   const TextureManager::ReloadPolicy& reloadPolicy,
 311   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad)
 312 {
 313   TextureSet textureSet;
 314
 315   loadingStatus = false;
 316   textureRect   = FULL_ATLAS_RECT;
 317
 318   if(VisualUrl::TEXTURE == url.GetProtocolType())
 319   {
 320     std::string location = url.GetLocation();
 321     if(location.size() > 0u)
 322     {
 323       TextureId id = std::stoi(location);
 324       textureSet   = mTextureCacheManager.GetExternalTextureSet(id);
 325       if(textureSet)
 326       {
 327         preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 328         textureId         = id;
 329         return textureSet;
 330       }
 331     }
 332   }
 333   else
 334   {
 335     // For Atlas
 336     if(synchronousLoading && atlasingStatus)
 337     {
 338       const bool synchronousAtlasAvaliable = (desiredSize != ImageDimensions() || url.IsLocalResource()) ? imageAtlasManager->CheckAtlasAvailable(url, desiredSize)
 339                                                                                                          : false;
 340       if(synchronousAtlasAvaliable)
 341       {
 342         Devel::PixelBuffer pixelBuffer = LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection);
 343
 344         if(pixelBuffer && maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 345         {
 346           Devel::PixelBuffer maskPixelBuffer = LoadImageSynchronously(maskInfo->mAlphaMaskUrl, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, true);
 347           if(maskPixelBuffer)
 348           {
 349             pixelBuffer.ApplyMask(maskPixelBuffer, maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 350           }
 351         }
 352
 353         PixelData data;
 354         if(pixelBuffer)
 355         {
 356           PreMultiply(pixelBuffer, preMultiplyOnLoad);
 357           data = Devel::PixelBuffer::Convert(pixelBuffer); // takes ownership of buffer
 358
 359           if(data)
 360           {
 361             textureSet = imageAtlasManager->Add(textureRect, data);
 362             if(textureSet)
 363             {
 364               textureRectSize.SetWidth(data.GetWidth());
 365               textureRectSize.SetHeight(data.GetHeight());
 366             }
 367           }
 368           else
 369           {
 370             DALI_LOG_ERROR("TextureManager::LoadTexture: Synchronous Texture loading with atlasing is failed.\n");
 371           }
 372         }
 373         if(!textureSet)
 374         {
 375           atlasingStatus = false;
 376         }
 377       }
 378     }
 379
 380     if(!textureSet)
 381     {
 382       loadingStatus = true;
 383       // Atlas manager can chage desired size when it is set by 0,0.
 384       // We should store into textureRectSize only if atlasing successed.
 385       // So copy inputed desiredSize, and replace value into textureRectSize only if atlasing success.
 386       Dali::ImageDimensions atlasDesiredSize = desiredSize;
 387       if(atlasingStatus)
 388       {
 389         if(url.IsBufferResource())
 390         {
 391           const EncodedImageBuffer& encodedImageBuffer = GetEncodedImageBuffer(url.GetUrl());
 392           if(encodedImageBuffer)
 393           {
 394             textureSet = imageAtlasManager->Add(textureRect, encodedImageBuffer, desiredSize, fittingMode, true, atlasObserver);
 395           }
 396         }
 397         else
 398         {
 399           textureSet = imageAtlasManager->Add(textureRect, url, atlasDesiredSize, fittingMode, true, atlasObserver);
 400         }
 401       }
 402       if(!textureSet) // big image, no atlasing or atlasing failed
 403       {
 404         atlasingStatus = false;
 405
 406         TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 407         float     contentScaleFactor = 1.0f;
 408         bool      cropToMask         = false;
 409         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 410         {
 411           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? StorageType::KEEP_PIXEL_BUFFER : StorageType::KEEP_TEXTURE, synchronousLoading);
 412           alphaMaskId            = maskInfo->mAlphaMaskId;
 413           if(maskInfo && maskInfo->mPreappliedMasking)
 414           {
 415             contentScaleFactor = maskInfo->mContentScaleFactor;
 416             cropToMask         = maskInfo->mCropToMask;
 417           }
 418         }
 419
 420         textureId = RequestLoad(
 421           url,
 422           alphaMaskId,
 423           contentScaleFactor,
 424           desiredSize,
 425           fittingMode,
 426           samplingMode,
 427           UseAtlas::NO_ATLAS,
 428           cropToMask,
 429           textureObserver,
 430           orientationCorrection,
 431           reloadPolicy,
 432           preMultiplyOnLoad,
 433           synchronousLoading);
 434
 435         TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 436         if(loadState == TextureManager::LoadState::UPLOADED)
 437         {
 438           // LoadComplete has already been called - keep the same texture set
 439           textureSet = mTextureCacheManager.GetTextureSet(textureId);
 440         }
 441
 442         // If we are loading the texture, or waiting for the ready signal handler to complete, inform
 443         // caller that they need to wait.
 444         loadingStatus = (loadState == TextureManager::LoadState::LOADING ||
 445                          loadState == TextureManager::LoadState::WAITING_FOR_MASK ||
 446                          loadState == TextureManager::LoadState::MASK_APPLYING ||
 447                          loadState == TextureManager::LoadState::MASK_APPLIED ||
 448                          loadState == TextureManager::LoadState::NOT_STARTED ||
 449                          mQueueLoadFlag);
 450       }
 451       else
 452       {
 453         textureRectSize = atlasDesiredSize;
 454       }
 455     }
 456   }
 457
 458   if(!atlasingStatus && textureSet)
 459   {
 460     Sampler sampler = Sampler::New();
 461     sampler.SetWrapMode(wrapModeU, wrapModeV);
 462     textureSet.SetSampler(0u, sampler);
 463   }
 464
 465   if(synchronousLoading)
 466   {
 467     loadingStatus = false;
 468   }
 469
 470   return textureSet;
 471 }
 472
 473 TextureManager::TextureId TextureManager::RequestLoad(
 474   const VisualUrl&                    url,
 475   const ImageDimensions&              desiredSize,
 476   const Dali::FittingMode::Type&      fittingMode,
 477   const Dali::SamplingMode::Type&     samplingMode,
 478   const UseAtlas&                     useAtlas,
 479   TextureUploadObserver*              observer,
 480   const bool&                         orientationCorrection,
 481   const TextureManager::ReloadPolicy& reloadPolicy,
 482   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 483   const bool&                         synchronousLoading)
 484 {
 485   return RequestLoadInternal(url, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, useAtlas, false, StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 486 }
 487
 488 TextureManager::TextureId TextureManager::RequestLoad(
 489   const VisualUrl&                    url,
 490   const TextureManager::TextureId&    maskTextureId,
 491   const float&                        contentScale,
 492   const Dali::ImageDimensions&        desiredSize,
 493   const Dali::FittingMode::Type&      fittingMode,
 494   const Dali::SamplingMode::Type&     samplingMode,
 495   const TextureManager::UseAtlas&     useAtlas,
 496   const bool&                         cropToMask,
 497   TextureUploadObserver*              observer,
 498   const bool&                         orientationCorrection,
 499   const TextureManager::ReloadPolicy& reloadPolicy,
 500   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 501   const bool&                         synchronousLoading)
 502 {
 503   return RequestLoadInternal(url, maskTextureId, contentScale, desiredSize, fittingMode, samplingMode, useAtlas, cropToMask, StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 504 }
 505
 506 TextureManager::TextureId TextureManager::RequestMaskLoad(
 507   const VisualUrl& maskUrl,
 508   StorageType      storageType,
 509   const bool&      synchronousLoading)
 510 {
 511   // Use the normal load procedure to get the alpha mask.
 512   auto preMultiply = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 513   return RequestLoadInternal(maskUrl, INVALID_TEXTURE_ID, 1.0f, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, UseAtlas::NO_ATLAS, false, storageType, NULL, true, TextureManager::ReloadPolicy::CACHED, preMultiply, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 514 }
 515
 516 TextureManager::TextureId TextureManager::RequestLoadInternal(
 517   const VisualUrl&                    url,
 518   const TextureManager::TextureId&    maskTextureId,
 519   const float&                        contentScale,
 520   const Dali::ImageDimensions&        desiredSize,
 521   const Dali::FittingMode::Type&      fittingMode,
 522   const Dali::SamplingMode::Type&     samplingMode,
 523   const TextureManager::UseAtlas&     useAtlas,
 524   const bool&                         cropToMask,
 525   const TextureManager::StorageType&  storageType,
 526   TextureUploadObserver*              observer,
 527   const bool&                         orientationCorrection,
 528   const TextureManager::ReloadPolicy& reloadPolicy,
 529   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 530   Dali::AnimatedImageLoading          animatedImageLoading,
 531   const std::uint32_t&                frameIndex,
 532   const bool&                         synchronousLoading)
 533 {
 534   TextureHash       textureHash = INITIAL_HASH_NUMBER;
 535   TextureCacheIndex cacheIndex  = INVALID_CACHE_INDEX;
 536   if(storageType != StorageType::RETURN_PIXEL_BUFFER && frameIndex == 0)
 537   {
 538     textureHash = mTextureCacheManager.GenerateHash(url, desiredSize, fittingMode, samplingMode, useAtlas, maskTextureId, cropToMask, frameIndex);
 539
 540     // Look up the texture by hash. Note: The extra parameters are used in case of a hash collision.
 541     cacheIndex = mTextureCacheManager.FindCachedTexture(textureHash, url, desiredSize, fittingMode, samplingMode, useAtlas, storageType, maskTextureId, cropToMask, preMultiplyOnLoad, (animatedImageLoading) ? true : false, frameIndex);
 542   }
 543
 544   TextureManager::TextureId textureId = INVALID_TEXTURE_ID;
 545   // Check if the requested Texture exists in the cache.
 546   if(cacheIndex != INVALID_CACHE_INDEX)
 547   {
 548     if(TextureManager::ReloadPolicy::CACHED == reloadPolicy)
 549     {
 550       // Mark this texture being used by another client resource. Forced reload would replace the current texture
 551       // without the need for incrementing the reference count.
 552       ++(mTextureCacheManager[cacheIndex].referenceCount);
 553     }
 554     textureId = mTextureCacheManager[cacheIndex].textureId;
 555
 556     // Update preMultiplyOnLoad value. It should be changed according to preMultiplied value of the cached info.
 557     preMultiplyOnLoad = mTextureCacheManager[cacheIndex].preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 558
 559     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) Using cached texture id@%d, textureId=%d, frameindex=%d, premultiplied=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, frameIndex, mTextureCacheManager[cacheIndex].preMultiplied ? 1 : 0);
 560   }
 561
 562   if(textureId == INVALID_TEXTURE_ID) // There was no caching, or caching not required
 563   {
 564     textureId = mTextureCacheManager.GenerateTextureId();
 565
 566     bool preMultiply = (preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 567
 568     // Cache new texutre, and get cacheIndex.
 569     cacheIndex = mTextureCacheManager.AppendCache(TextureInfo(textureId, maskTextureId, url, desiredSize, contentScale, fittingMode, samplingMode, false, cropToMask, useAtlas, textureHash, orientationCorrection, preMultiply, animatedImageLoading, frameIndex));
 570
 571     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) New texture, cacheIndex:%d, textureId=%d, frameindex=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, frameIndex);
 572   }
 573
 574   // The below code path is common whether we are using the cache or not.
 575   // The textureInfoIndex now refers to either a pre-existing cached TextureInfo,
 576   // or a new TextureInfo just created.
 577   TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 578   textureInfo.maskTextureId         = maskTextureId;
 579   textureInfo.storageType           = storageType;
 580   textureInfo.orientationCorrection = orientationCorrection;
 581
 582   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureInfo loadState:%s\n", GET_LOAD_STATE_STRING(textureInfo.loadState));
 583
 584   // Force reloading of texture by setting loadState unless already loading or cancelled.
 585   if(TextureManager::ReloadPolicy::FORCED == reloadPolicy &&
 586      TextureManager::LoadState::LOADING != textureInfo.loadState &&
 587      TextureManager::LoadState::WAITING_FOR_MASK != textureInfo.loadState &&
 588      TextureManager::LoadState::MASK_APPLYING != textureInfo.loadState &&
 589      TextureManager::LoadState::MASK_APPLIED != textureInfo.loadState &&
 590      TextureManager::LoadState::CANCELLED != textureInfo.loadState)
 591   {
 592     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "TextureManager::RequestLoad( url=%s observer=%p ) ForcedReload cacheIndex:%d, textureId=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId);
 593
 594     textureInfo.loadState = TextureManager::LoadState::NOT_STARTED;
 595   }
 596
 597   if(!synchronousLoading)
 598   {
 599     // Check if we should add the observer.
 600     // Only do this if we have not loaded yet and it will not have loaded by the end of this method.
 601     switch(textureInfo.loadState)
 602     {
 603       case TextureManager::LoadState::LOAD_FAILED: // Failed notifies observer which then stops observing.
 604       case TextureManager::LoadState::NOT_STARTED:
 605       {
 606         LoadOrQueueTexture(textureInfo, observer); // If called inside NotifyObservers, queues until afterwards
 607         break;
 608       }
 609       case TextureManager::LoadState::LOADING:
 610       case TextureManager::LoadState::WAITING_FOR_MASK:
 611       case TextureManager::LoadState::MASK_APPLYING:
 612       case TextureManager::LoadState::MASK_APPLIED:
 613       {
 614         ObserveTexture(textureInfo, observer);
 615         break;
 616       }
 617       case TextureManager::LoadState::UPLOADED:
 618       {
 619         if(observer)
 620         {
 621           LoadOrQueueTexture(textureInfo, observer);
 622         }
 623         break;
 624       }
 625       case TextureManager::LoadState::CANCELLED:
 626       {
 627         // A cancelled texture hasn't finished loading yet. Treat as a loading texture
 628         // (it's ref count has already been incremented, above)
 629         textureInfo.loadState = TextureManager::LoadState::LOADING;
 630         ObserveTexture(textureInfo, observer);
 631         break;
 632       }
 633       case TextureManager::LoadState::LOAD_FINISHED:
 634       {
 635         // Loading has already completed.
 636         if(observer && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
 637         {
 638           LoadOrQueueTexture(textureInfo, observer);
 639         }
 640         break;
 641       }
 642     }
 643   }
 644   else
 645   {
 646     // If the image is already finished to load, use cached texture.
 647     // We don't need to consider Observer because this is synchronous loading.
 648     if(!(textureInfo.loadState == TextureManager::LoadState::UPLOADED ||
 649          textureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED))
 650     {
 651       Devel::PixelBuffer pixelBuffer = LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection);
 652
 653       if(!pixelBuffer)
 654       {
 655         // If pixelBuffer loading is failed in synchronously, call Remove() method.
 656         Remove(textureId, nullptr);
 657         return INVALID_TEXTURE_ID;
 658       }
 659
 660       if(storageType == StorageType::KEEP_PIXEL_BUFFER) // For the mask image loading.
 661       {
 662         textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
 663         textureInfo.loadState   = LoadState::LOAD_FINISHED;
 664       }
 665       else // For the image loading.
 666       {
 667         Texture maskTexture;
 668         if(maskTextureId != INVALID_TEXTURE_ID)
 669         {
 670           TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 671           if(maskCacheIndex != INVALID_CACHE_INDEX)
 672           {
 673             if(mTextureCacheManager[maskCacheIndex].storageType == StorageType::KEEP_TEXTURE)
 674             {
 675               TextureSet maskTextures = mTextureCacheManager[maskCacheIndex].textureSet;
 676               if(maskTextures && maskTextures.GetTextureCount())
 677               {
 678                 maskTexture = maskTextures.GetTexture(0u);
 679               }
 680             }
 681             else if(mTextureCacheManager[maskCacheIndex].storageType == StorageType::KEEP_PIXEL_BUFFER)
 682             {
 683               Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
 684               if(maskPixelBuffer)
 685               {
 686                 pixelBuffer.ApplyMask(maskPixelBuffer, contentScale, cropToMask);
 687               }
 688               else
 689               {
 690                 DALI_LOG_ERROR("Mask image cached invalid pixel buffer!\n");
 691               }
 692             }
 693           }
 694           else
 695           {
 696             DALI_LOG_ERROR("Mask image is not stored in cache.\n");
 697           }
 698         }
 699         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 700
 701         // Upload texture
 702         UploadTexture(pixelBuffer, textureInfo);
 703         if(maskTexture && textureInfo.textureSet)
 704         {
 705           textureInfo.textureSet.SetTexture(1u, maskTexture);
 706         }
 707       }
 708     }
 709   }
 710   return textureId;
 711 }
 712
 713 void TextureManager::Remove(const TextureManager::TextureId& textureId, TextureUploadObserver* observer)
 714 {
 715   if(textureId != INVALID_TEXTURE_ID)
 716   {
 717     if(mQueueLoadFlag)
 718     {
 719       // Remove textureId after NotifyObserver finished
 720       mRemoveQueue.PushBack(textureId);
 721     }
 722     else
 723     {
 724       // Remove textureId in CacheManager.
 725       mTextureCacheManager.RemoveCache(textureId);
 726     }
 727
 728     if(observer)
 729     {
 730       // Remove element from the LoadQueue
 731       for(auto&& element : mLoadQueue)
 732       {
 733         if(element.mObserver == observer)
 734         {
 735           // Do not erase the item. We will clear it later in ProcessLoadQueue().
 736           element.mObserver = nullptr;
 737           break;
 738         }
 739       }
 740     }
 741   }
 742 }
 743
 744 Devel::PixelBuffer TextureManager::LoadImageSynchronously(
 745   const VisualUrl&                url,
 746   const Dali::ImageDimensions&    desiredSize,
 747   const Dali::FittingMode::Type&  fittingMode,
 748   const Dali::SamplingMode::Type& samplingMode,
 749   const bool&                     orientationCorrection)
 750 {
 751   Devel::PixelBuffer pixelBuffer;
 752   if(url.IsBufferResource())
 753   {
 754     const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 755     if(encodedImageBuffer)
 756     {
 757       pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 758     }
 759   }
 760   else
 761   {
 762     pixelBuffer = LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 763   }
 764   return pixelBuffer;
 765 }
 766
 767 void TextureManager::AddObserver(TextureManager::LifecycleObserver& observer)
 768 {
 769   // make sure an observer doesn't observe the same object twice
 770   // otherwise it will get multiple calls to ObjectDestroyed()
 771   DALI_ASSERT_DEBUG(mLifecycleObservers.End() == std::find(mLifecycleObservers.Begin(), mLifecycleObservers.End(), &observer));
 772   mLifecycleObservers.PushBack(&observer);
 773 }
 774
 775 void TextureManager::RemoveObserver(TextureManager::LifecycleObserver& observer)
 776 {
 777   // Find the observer...
 778   auto endIter = mLifecycleObservers.End();
 779   for(auto iter = mLifecycleObservers.Begin(); iter != endIter; ++iter)
 780   {
 781     if((*iter) == &observer)
 782     {
 783       mLifecycleObservers.Erase(iter);
 784       break;
 785     }
 786   }
 787   DALI_ASSERT_DEBUG(endIter != mLifecycleObservers.End());
 788 }
 789
 790 void TextureManager::LoadOrQueueTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 791 {
 792   switch(textureInfo.loadState)
 793   {
 794     case LoadState::NOT_STARTED:
 795     case LoadState::LOAD_FAILED:
 796     {
 797       if(mQueueLoadFlag)
 798       {
 799         QueueLoadTexture(textureInfo, observer);
 800       }
 801       else
 802       {
 803         LoadTexture(textureInfo, observer);
 804       }
 805       break;
 806     }
 807     case LoadState::UPLOADED:
 808     {
 809       if(mQueueLoadFlag)
 810       {
 811         QueueLoadTexture(textureInfo, observer);
 812       }
 813       else
 814       {
 815         // The Texture has already loaded. The other observers have already been notified.
 816         // We need to send a "late" loaded notification for this observer.
 817         EmitLoadComplete(observer, textureInfo, true);
 818       }
 819       break;
 820     }
 821     case LoadState::LOADING:
 822     case LoadState::CANCELLED:
 823     case LoadState::LOAD_FINISHED:
 824     case LoadState::WAITING_FOR_MASK:
 825     case LoadState::MASK_APPLYING:
 826     case LoadState::MASK_APPLIED:
 827     {
 828       break;
 829     }
 830   }
 831 }
 832
 833 void TextureManager::QueueLoadTexture(const TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 834 {
 835   const auto& textureId = textureInfo.textureId;
 836   mLoadQueue.PushBack(LoadQueueElement(textureId, observer));
 837
 838   observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 839 }
 840
 841 void TextureManager::LoadTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 842 {
 843   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::LoadTexture(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
 844
 845   textureInfo.loadState = LoadState::LOADING;
 846   if(!textureInfo.loadSynchronously)
 847   {
 848     auto& loadersContainer  = (textureInfo.url.IsLocalResource() || textureInfo.url.IsBufferResource()) ? mAsyncLocalLoaders : mAsyncRemoteLoaders;
 849     auto  loadingHelperIt   = loadersContainer.GetNext();
 850     auto  premultiplyOnLoad = (textureInfo.preMultiplyOnLoad && textureInfo.maskTextureId == INVALID_TEXTURE_ID) ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
 851     DALI_ASSERT_ALWAYS(loadingHelperIt != loadersContainer.End());
 852     if(textureInfo.animatedImageLoading)
 853     {
 854       loadingHelperIt->LoadAnimatedImage(textureInfo.textureId, textureInfo.animatedImageLoading, textureInfo.frameIndex, premultiplyOnLoad);
 855     }
 856     else
 857     {
 858       loadingHelperIt->Load(textureInfo.textureId, textureInfo.url, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, textureInfo.orientationCorrection, premultiplyOnLoad);
 859     }
 860   }
 861   ObserveTexture(textureInfo, observer);
 862 }
 863
 864 void TextureManager::ProcessLoadQueue()
 865 {
 866   for(auto&& element : mLoadQueue)
 867   {
 868     if(!element.mObserver)
 869     {
 870       continue;
 871     }
 872
 873     TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(element.mTextureId);
 874     if(cacheIndex != INVALID_CACHE_INDEX)
 875     {
 876       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 877       if((textureInfo.loadState == LoadState::UPLOADED) || (textureInfo.loadState == LoadState::LOAD_FINISHED && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER))
 878       {
 879         EmitLoadComplete(element.mObserver, textureInfo, true);
 880       }
 881       else
 882       {
 883         LoadTexture(textureInfo, element.mObserver);
 884       }
 885     }
 886   }
 887   mLoadQueue.Clear();
 888 }
 889
 890 void TextureManager::ProcessRemoveQueue()
 891 {
 892   for(const auto& textureId : mRemoveQueue)
 893   {
 894     mTextureCacheManager.RemoveCache(textureId);
 895   }
 896   mRemoveQueue.Clear();
 897 }
 898
 899 void TextureManager::ObserveTexture(TextureManager::TextureInfo& textureInfo,
 900                                     TextureUploadObserver*       observer)
 901 {
 902   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ObserveTexture(): url:%s observer:%p\n", textureInfo.url.GetUrl().c_str(), observer);
 903
 904   if(observer)
 905   {
 906     textureInfo.observerList.PushBack(observer);
 907     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 908   }
 909 }
 910
 911 void TextureManager::AsyncLoadComplete(const TextureManager::TextureId& textureId, Devel::PixelBuffer pixelBuffer)
 912 {
 913   TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 914   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::AsyncLoadComplete( textureId:%d CacheIndex:%d )\n", textureId, cacheIndex.GetIndex());
 915   if(cacheIndex != INVALID_CACHE_INDEX)
 916   {
 917     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 918
 919     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "  textureId:%d Url:%s CacheIndex:%d LoadState: %s\n", textureInfo.textureId, textureInfo.url.GetUrl().c_str(), cacheIndex.GetIndex(), GET_LOAD_STATE_STRING(textureInfo.loadState));
 920
 921     if(textureInfo.loadState != LoadState::CANCELLED)
 922     {
 923       // textureInfo can be invalidated after this call (as the mTextureInfoContainer may be modified)
 924       PostLoad(textureInfo, pixelBuffer);
 925     }
 926     else
 927     {
 928       Remove(textureInfo.textureId, nullptr);
 929     }
 930   }
 931 }
 932
 933 void TextureManager::PostLoad(TextureManager::TextureInfo& textureInfo, Devel::PixelBuffer& pixelBuffer)
 934 {
 935   // Was the load successful?
 936   if(pixelBuffer && (pixelBuffer.GetWidth() != 0) && (pixelBuffer.GetHeight() != 0))
 937   {
 938     // No atlas support for now
 939     textureInfo.useAtlas      = UseAtlas::NO_ATLAS;
 940     textureInfo.preMultiplied = pixelBuffer.IsAlphaPreMultiplied();
 941
 942     if(textureInfo.storageType == StorageType::UPLOAD_TO_TEXTURE)
 943     {
 944       // If there is a mask texture ID associated with this texture, then apply the mask
 945       // if it's already loaded. If it hasn't, and the mask is still loading,
 946       // wait for the mask to finish loading.
 947       // note, If the texture is already uploaded synchronously during loading,
 948       // we don't need to apply mask.
 949       if(textureInfo.loadState != LoadState::UPLOADED &&
 950          textureInfo.maskTextureId != INVALID_TEXTURE_ID)
 951       {
 952         if(textureInfo.loadState == LoadState::MASK_APPLYING)
 953         {
 954           textureInfo.loadState = LoadState::MASK_APPLIED;
 955           UploadTexture(pixelBuffer, textureInfo);
 956           NotifyObservers(textureInfo, true);
 957         }
 958         else
 959         {
 960           LoadState maskLoadState = mTextureCacheManager.GetTextureStateInternal(textureInfo.maskTextureId);
 961           textureInfo.pixelBuffer = pixelBuffer; // Store the pixel buffer temporarily
 962           if(maskLoadState == LoadState::LOADING)
 963           {
 964             textureInfo.loadState = LoadState::WAITING_FOR_MASK;
 965           }
 966           else if(maskLoadState == LoadState::LOAD_FINISHED || maskLoadState == LoadState::UPLOADED)
 967           {
 968             // Send New Task to Thread
 969             TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
 970             if(maskCacheIndex != INVALID_CACHE_INDEX)
 971             {
 972               TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
 973               if(maskTextureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER)
 974               {
 975                 // Send New Task to Thread
 976                 ApplyMask(textureInfo, textureInfo.maskTextureId);
 977               }
 978               else if(maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
 979               {
 980                 // Upload image texture. textureInfo.loadState will be UPLOADED.
 981                 UploadTexture(textureInfo.pixelBuffer, textureInfo);
 982                 if(maskTextureInfo.textureSet.GetTextureCount() > 0u)
 983                 {
 984                   Texture maskTexture = maskTextureInfo.textureSet.GetTexture(0u);
 985                   textureInfo.textureSet.SetTexture(1u, maskTexture);
 986                 }
 987                 // notify mask texture set.
 988                 NotifyObservers(textureInfo, true);
 989               }
 990             }
 991           }
 992           else // maskLoadState == LoadState::LOAD_FAILED
 993           {
 994             // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
 995             DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
 996             UploadTexture(pixelBuffer, textureInfo);
 997             NotifyObservers(textureInfo, true);
 998           }
 999         }
1000       }
1001       else
1002       {
1003         UploadTexture(pixelBuffer, textureInfo);
1004         NotifyObservers(textureInfo, true);
1005       }
1006     }
1007     else
1008     {
1009       textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
1010       textureInfo.loadState   = LoadState::LOAD_FINISHED;
1011
1012       if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1013       {
1014         NotifyObservers(textureInfo, true);
1015       }
1016       else // for the StorageType::KEEP_PIXEL_BUFFER and StorageType::KEEP_TEXTURE
1017       {
1018         // Check if there was another texture waiting for this load to complete
1019         // (e.g. if this was an image mask, and its load is on a different thread)
1020         CheckForWaitingTexture(textureInfo);
1021       }
1022     }
1023   }
1024   else
1025   {
1026     textureInfo.loadState = LoadState::LOAD_FAILED;
1027     if(textureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER || textureInfo.storageType == StorageType::KEEP_TEXTURE)
1028     {
1029       // Check if there was another texture waiting for this load to complete
1030       // (e.g. if this was an image mask, and its load is on a different thread)
1031       CheckForWaitingTexture(textureInfo);
1032     }
1033     else
1034     {
1035       NotifyObservers(textureInfo, false);
1036     }
1037   }
1038 }
1039
1040 void TextureManager::CheckForWaitingTexture(TextureManager::TextureInfo& maskTextureInfo)
1041 {
1042   if(maskTextureInfo.loadState == LoadState::LOAD_FINISHED &&
1043      maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1044   {
1045     // Upload mask texture. textureInfo.loadState will be UPLOADED.
1046     UploadTexture(maskTextureInfo.pixelBuffer, maskTextureInfo);
1047   }
1048
1049   // Search the cache, checking if any texture has this texture id as a
1050   // maskTextureId:
1051   const std::size_t size = mTextureCacheManager.size();
1052
1053   // TODO : Refactorize here to not iterate whole cached image.
1054   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1055   {
1056     if(mTextureCacheManager[cacheIndex].maskTextureId == maskTextureInfo.textureId &&
1057        mTextureCacheManager[cacheIndex].loadState == LoadState::WAITING_FOR_MASK)
1058     {
1059       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1060
1061       if(maskTextureInfo.loadState == LoadState::LOAD_FINISHED)
1062       {
1063         if(maskTextureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER)
1064         {
1065           // Send New Task to Thread
1066           ApplyMask(textureInfo, maskTextureInfo.textureId);
1067         }
1068       }
1069       else if(maskTextureInfo.loadState == LoadState::UPLOADED)
1070       {
1071         if(maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1072         {
1073           // Upload image texture. textureInfo.loadState will be UPLOADED.
1074           UploadTexture(textureInfo.pixelBuffer, textureInfo);
1075           if(maskTextureInfo.textureSet.GetTextureCount() > 0u)
1076           {
1077             Texture maskTexture = maskTextureInfo.textureSet.GetTexture(0u);
1078             textureInfo.textureSet.SetTexture(1u, maskTexture);
1079           }
1080           // notify mask texture set.
1081           NotifyObservers(textureInfo, true);
1082         }
1083       }
1084       else
1085       {
1086         // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1087         DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1088         UploadTexture(textureInfo.pixelBuffer, textureInfo);
1089         NotifyObservers(textureInfo, true);
1090       }
1091     }
1092   }
1093 }
1094
1095 void TextureManager::ApplyMask(TextureManager::TextureInfo& textureInfo, const TextureManager::TextureId& maskTextureId)
1096 {
1097   TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
1098   if(maskCacheIndex != INVALID_CACHE_INDEX)
1099   {
1100     Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
1101     Devel::PixelBuffer pixelBuffer     = textureInfo.pixelBuffer;
1102     textureInfo.pixelBuffer.Reset();
1103
1104     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ApplyMask(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
1105
1106     textureInfo.loadState   = LoadState::MASK_APPLYING;
1107     auto& loadersContainer  = (textureInfo.url.IsLocalResource() || textureInfo.url.IsBufferResource()) ? mAsyncLocalLoaders : mAsyncRemoteLoaders;
1108     auto  loadingHelperIt   = loadersContainer.GetNext();
1109     auto  premultiplyOnLoad = textureInfo.preMultiplyOnLoad ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
1110     DALI_ASSERT_ALWAYS(loadingHelperIt != loadersContainer.End());
1111     loadingHelperIt->ApplyMask(textureInfo.textureId, pixelBuffer, maskPixelBuffer, textureInfo.scaleFactor, textureInfo.cropToMask, premultiplyOnLoad);
1112   }
1113 }
1114
1115 void TextureManager::UploadTexture(Devel::PixelBuffer& pixelBuffer, TextureManager::TextureInfo& textureInfo)
1116 {
1117   if(textureInfo.loadState != LoadState::UPLOADED && textureInfo.useAtlas != UseAtlas::USE_ATLAS)
1118   {
1119     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "  TextureManager::UploadTexture() New Texture for textureId:%d\n", textureInfo.textureId);
1120
1121     // Check if this pixelBuffer is premultiplied
1122     textureInfo.preMultiplied = pixelBuffer.IsAlphaPreMultiplied();
1123
1124     auto& renderingAddOn = RenderingAddOn::Get();
1125     if(renderingAddOn.IsValid())
1126     {
1127       renderingAddOn.CreateGeometry(textureInfo.textureId, pixelBuffer);
1128     }
1129
1130     Texture texture = Texture::New(Dali::TextureType::TEXTURE_2D, pixelBuffer.GetPixelFormat(), pixelBuffer.GetWidth(), pixelBuffer.GetHeight());
1131
1132     PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer);
1133     texture.Upload(pixelData);
1134     if(!textureInfo.textureSet)
1135     {
1136       textureInfo.textureSet = TextureSet::New();
1137     }
1138     textureInfo.textureSet.SetTexture(0u, texture);
1139   }
1140
1141   // Update the load state.
1142   // Note: This is regardless of success as we care about whether a
1143   // load attempt is in progress or not.  If unsuccessful, a broken
1144   // image is still loaded.
1145   textureInfo.loadState = LoadState::UPLOADED;
1146 }
1147
1148 void TextureManager::NotifyObservers(TextureManager::TextureInfo& textureInfo, const bool& success)
1149 {
1150   TextureId textureId = textureInfo.textureId;
1151
1152   // If there is an observer: Notify the load is complete, whether successful or not,
1153   // and erase it from the list
1154   TextureInfo* info = &textureInfo;
1155
1156   if(info->animatedImageLoading)
1157   {
1158     // If loading failed, we don't need to get frameCount and frameInterval.
1159     if(success)
1160     {
1161       info->frameCount    = info->animatedImageLoading.GetImageCount();
1162       info->frameInterval = info->animatedImageLoading.GetFrameInterval(info->frameIndex);
1163     }
1164     info->animatedImageLoading.Reset();
1165   }
1166
1167   mQueueLoadFlag = true;
1168
1169   // Reverse observer list that we can pop_back the observer.
1170   std::reverse(info->observerList.Begin(), info->observerList.End());
1171
1172   while(info->observerList.Count())
1173   {
1174     TextureUploadObserver* observer = *(info->observerList.End() - 1u);
1175
1176     // During LoadComplete() a Control ResourceReady() signal is emitted.
1177     // During that signal the app may add remove /add Textures (e.g. via
1178     // ImageViews).
1179     // It is possible for observers to be removed from the observer list,
1180     // and it is also possible for the mTextureInfoContainer to be modified,
1181     // invalidating the reference to the textureInfo struct.
1182     // Texture load requests for the same URL are deferred until the end of this
1183     // method.
1184     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::NotifyObservers() textureId:%d url:%s loadState:%s\n", textureId, info->url.GetUrl().c_str(), GET_LOAD_STATE_STRING(info->loadState));
1185
1186     // It is possible for the observer to be deleted.
1187     // Disconnect and remove the observer first.
1188     observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1189
1190     info->observerList.Erase(info->observerList.End() - 1u);
1191
1192     EmitLoadComplete(observer, *info, success);
1193
1194     // Get the textureInfo from the container again as it may have been invalidated.
1195     TextureCacheIndex textureInfoIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1196     if(textureInfoIndex == INVALID_CACHE_INDEX)
1197     {
1198       break; // texture has been removed - can stop.
1199     }
1200     info = &mTextureCacheManager[textureInfoIndex];
1201   }
1202
1203   mQueueLoadFlag = false;
1204   ProcessLoadQueue();
1205   ProcessRemoveQueue();
1206
1207   if(info->storageType == StorageType::RETURN_PIXEL_BUFFER && info->observerList.Count() == 0)
1208   {
1209     Remove(info->textureId, nullptr);
1210   }
1211 }
1212
1213 void TextureManager::ObserverDestroyed(TextureUploadObserver* observer)
1214 {
1215   const std::size_t size = mTextureCacheManager.size();
1216   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1217   {
1218     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1219     for(TextureInfo::ObserverListType::Iterator j = textureInfo.observerList.Begin();
1220         j != textureInfo.observerList.End();)
1221     {
1222       if(*j == observer)
1223       {
1224         j = textureInfo.observerList.Erase(j);
1225       }
1226       else
1227       {
1228         ++j;
1229       }
1230     }
1231   }
1232
1233   // Remove element from the LoadQueue
1234   for(auto&& element : mLoadQueue)
1235   {
1236     if(element.mObserver == observer)
1237     {
1238       element.mObserver = nullptr;
1239     }
1240   }
1241 }
1242
1243 Dali::Geometry TextureManager::GetRenderGeometry(const TextureManager::TextureId& textureId, std::uint32_t& frontElements, std::uint32_t& backElements)
1244 {
1245   return RenderingAddOn::Get().IsValid() ? RenderingAddOn::Get().GetGeometry(textureId, frontElements, backElements) : Geometry();
1246 }
1247
1248 void TextureManager::EmitLoadComplete(TextureUploadObserver* observer, TextureManager::TextureInfo& textureInfo, const bool& success)
1249 {
1250   if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1251   {
1252     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::PIXEL_BUFFER, textureInfo.pixelBuffer, textureInfo.url.GetUrl(), textureInfo.preMultiplied));
1253   }
1254   else if(textureInfo.isAnimatedImageFormat)
1255   {
1256     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::ANIMATED_IMAGE_TEXTURE, textureInfo.textureId, textureInfo.frameCount, textureInfo.frameInterval));
1257   }
1258   else
1259   {
1260     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::TEXTURE, textureInfo.textureId, textureInfo.textureSet, (textureInfo.useAtlas == UseAtlas::USE_ATLAS) ? true : false, textureInfo.atlasRect, textureInfo.preMultiplied));
1261   }
1262 }
1263
1264 } // namespace Internal
1265
1266 } // namespace Toolkit
1267
1268 } // namespace Dali