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