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