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   const VisualUrl&                url,
 143   Dali::AnimatedImageLoading      animatedImageLoading,
 144   const uint32_t&                 frameIndex,
 145   TextureManager::TextureId&      textureId,
 146   MaskingDataPointer&             maskInfo,
 147   const Dali::SamplingMode::Type& samplingMode,
 148   const Dali::WrapMode::Type&     wrapModeU,
 149   const Dali::WrapMode::Type&     wrapModeV,
 150   const bool&                     synchronousLoading,
 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(url, alphaMaskId, contentScaleFactor, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::BOX_THEN_LINEAR, UseAtlas::NO_ATLAS, cropToMask, StorageType::UPLOAD_TO_TEXTURE, textureObserver, true, TextureManager::ReloadPolicy::CACHED, preMultiply, animatedImageLoading, frameIndex, false);
 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);
 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);
 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);
 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);
 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 {
 509   TextureHash       textureHash = INITIAL_HASH_NUMBER;
 510   TextureCacheIndex cacheIndex  = INVALID_CACHE_INDEX;
 511   if(storageType != StorageType::RETURN_PIXEL_BUFFER)
 512   {
 513     textureHash = mTextureCacheManager.GenerateHash(url, desiredSize, fittingMode, samplingMode, useAtlas, maskTextureId, cropToMask, frameIndex);
 514
 515     // Look up the texture by hash. Note: The extra parameters are used in case of a hash collision.
 516     cacheIndex = mTextureCacheManager.FindCachedTexture(textureHash, url, desiredSize, fittingMode, samplingMode, useAtlas, maskTextureId, cropToMask, preMultiplyOnLoad, (animatedImageLoading) ? true : false, frameIndex);
 517   }
 518
 519   TextureManager::TextureId textureId = INVALID_TEXTURE_ID;
 520   // Check if the requested Texture exists in the cache.
 521   if(cacheIndex != INVALID_CACHE_INDEX)
 522   {
 523     if(TextureManager::ReloadPolicy::CACHED == reloadPolicy)
 524     {
 525       // Mark this texture being used by another client resource. Forced reload would replace the current texture
 526       // without the need for incrementing the reference count.
 527       ++(mTextureCacheManager[cacheIndex].referenceCount);
 528     }
 529     textureId = mTextureCacheManager[cacheIndex].textureId;
 530
 531     // Update preMultiplyOnLoad value. It should be changed according to preMultiplied value of the cached info.
 532     preMultiplyOnLoad = mTextureCacheManager[cacheIndex].preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 533
 534     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);
 535   }
 536
 537   if(textureId == INVALID_TEXTURE_ID) // There was no caching, or caching not required
 538   {
 539     textureId = mTextureCacheManager.GenerateTextureId();
 540
 541     bool preMultiply = (preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 542
 543     // Cache new texutre, and get cacheIndex.
 544     cacheIndex = mTextureCacheManager.AppendCache(TextureInfo(textureId, maskTextureId, url, desiredSize, contentScale, fittingMode, samplingMode, false, cropToMask, useAtlas, textureHash, orientationCorrection, preMultiply, animatedImageLoading, frameIndex));
 545
 546     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);
 547   }
 548
 549   // The below code path is common whether we are using the cache or not.
 550   // The textureInfoIndex now refers to either a pre-existing cached TextureInfo,
 551   // or a new TextureInfo just created.
 552   TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 553   textureInfo.maskTextureId         = maskTextureId;
 554   textureInfo.storageType           = storageType;
 555   textureInfo.orientationCorrection = orientationCorrection;
 556
 557   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureInfo loadState:%s\n", GET_LOAD_STATE_STRING(textureInfo.loadState));
 558
 559   // Force reloading of texture by setting loadState unless already loading or cancelled.
 560   if(TextureManager::ReloadPolicy::FORCED == reloadPolicy &&
 561      TextureManager::LoadState::LOADING != textureInfo.loadState &&
 562      TextureManager::LoadState::WAITING_FOR_MASK != textureInfo.loadState &&
 563      TextureManager::LoadState::MASK_APPLYING != textureInfo.loadState &&
 564      TextureManager::LoadState::MASK_APPLIED != textureInfo.loadState &&
 565      TextureManager::LoadState::CANCELLED != textureInfo.loadState)
 566   {
 567     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);
 568
 569     textureInfo.loadState = TextureManager::LoadState::NOT_STARTED;
 570   }
 571
 572   if(!synchronousLoading)
 573   {
 574     // Check if we should add the observer.
 575     // Only do this if we have not loaded yet and it will not have loaded by the end of this method.
 576     switch(textureInfo.loadState)
 577     {
 578       case TextureManager::LoadState::LOAD_FAILED: // Failed notifies observer which then stops observing.
 579       case TextureManager::LoadState::NOT_STARTED:
 580       {
 581         LoadOrQueueTexture(textureInfo, observer); // If called inside NotifyObservers, queues until afterwards
 582         break;
 583       }
 584       case TextureManager::LoadState::LOADING:
 585       case TextureManager::LoadState::WAITING_FOR_MASK:
 586       case TextureManager::LoadState::MASK_APPLYING:
 587       case TextureManager::LoadState::MASK_APPLIED:
 588       {
 589         ObserveTexture(textureInfo, observer);
 590         break;
 591       }
 592       case TextureManager::LoadState::UPLOADED:
 593       {
 594         if(observer)
 595         {
 596           LoadOrQueueTexture(textureInfo, observer);
 597         }
 598         break;
 599       }
 600       case TextureManager::LoadState::CANCELLED:
 601       {
 602         // A cancelled texture hasn't finished loading yet. Treat as a loading texture
 603         // (it's ref count has already been incremented, above)
 604         textureInfo.loadState = TextureManager::LoadState::LOADING;
 605         ObserveTexture(textureInfo, observer);
 606         break;
 607       }
 608       case TextureManager::LoadState::LOAD_FINISHED:
 609       {
 610         // Loading has already completed.
 611         if(observer && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
 612         {
 613           LoadOrQueueTexture(textureInfo, observer);
 614         }
 615         break;
 616       }
 617     }
 618   }
 619   else
 620   {
 621     // If the image is already finished to load, use cached texture.
 622     // We don't need to consider Observer because this is synchronous loading.
 623     if(!(textureInfo.loadState == TextureManager::LoadState::UPLOADED ||
 624          textureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED))
 625     {
 626       Devel::PixelBuffer pixelBuffer = LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection);
 627
 628       if(!pixelBuffer)
 629       {
 630         // If pixelBuffer loading is failed in synchronously, call Remove() method.
 631         Remove(textureId, nullptr);
 632         return INVALID_TEXTURE_ID;
 633       }
 634
 635       if(storageType == StorageType::KEEP_PIXEL_BUFFER) // For the mask image loading.
 636       {
 637         textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
 638         textureInfo.loadState   = LoadState::LOAD_FINISHED;
 639       }
 640       else // For the image loading.
 641       {
 642         if(maskTextureId != INVALID_TEXTURE_ID)
 643         {
 644           TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 645           if(maskCacheIndex != INVALID_CACHE_INDEX)
 646           {
 647             Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
 648             if(maskPixelBuffer)
 649             {
 650               pixelBuffer.ApplyMask(maskPixelBuffer, contentScale, cropToMask);
 651             }
 652             else
 653             {
 654               DALI_LOG_ERROR("Mask image cached invalid pixel buffer!\n");
 655             }
 656           }
 657           else
 658           {
 659             DALI_LOG_ERROR("Mask image is not stored in cache.\n");
 660           }
 661         }
 662         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 663
 664         // Upload texture
 665         UploadTexture(pixelBuffer, textureInfo);
 666       }
 667     }
 668   }
 669   return textureId;
 670 }
 671
 672 void TextureManager::Remove(const TextureManager::TextureId& textureId, TextureUploadObserver* observer)
 673 {
 674   if(textureId != INVALID_TEXTURE_ID)
 675   {
 676     if(mQueueLoadFlag)
 677     {
 678       // Remove textureId after NotifyObserver finished
 679       mRemoveQueue.PushBack(textureId);
 680     }
 681     else
 682     {
 683       // Remove textureId in CacheManager.
 684       mTextureCacheManager.RemoveCache(textureId);
 685     }
 686
 687     if(observer)
 688     {
 689       // Remove element from the LoadQueue
 690       for(auto&& element : mLoadQueue)
 691       {
 692         if(element.mObserver == observer)
 693         {
 694           // Do not erase the item. We will clear it later in ProcessLoadQueue().
 695           element.mObserver = nullptr;
 696           break;
 697         }
 698       }
 699     }
 700   }
 701 }
 702
 703 Devel::PixelBuffer TextureManager::LoadImageSynchronously(
 704   const VisualUrl&                url,
 705   const Dali::ImageDimensions&    desiredSize,
 706   const Dali::FittingMode::Type&  fittingMode,
 707   const Dali::SamplingMode::Type& samplingMode,
 708   const bool&                     orientationCorrection)
 709 {
 710   Devel::PixelBuffer pixelBuffer;
 711   if(url.IsBufferResource())
 712   {
 713     const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 714     if(encodedImageBuffer)
 715     {
 716       pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 717     }
 718   }
 719   else
 720   {
 721     pixelBuffer = LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 722   }
 723   return pixelBuffer;
 724 }
 725
 726 void TextureManager::AddObserver(TextureManager::LifecycleObserver& observer)
 727 {
 728   // make sure an observer doesn't observe the same object twice
 729   // otherwise it will get multiple calls to ObjectDestroyed()
 730   DALI_ASSERT_DEBUG(mLifecycleObservers.End() == std::find(mLifecycleObservers.Begin(), mLifecycleObservers.End(), &observer));
 731   mLifecycleObservers.PushBack(&observer);
 732 }
 733
 734 void TextureManager::RemoveObserver(TextureManager::LifecycleObserver& observer)
 735 {
 736   // Find the observer...
 737   auto endIter = mLifecycleObservers.End();
 738   for(auto iter = mLifecycleObservers.Begin(); iter != endIter; ++iter)
 739   {
 740     if((*iter) == &observer)
 741     {
 742       mLifecycleObservers.Erase(iter);
 743       break;
 744     }
 745   }
 746   DALI_ASSERT_DEBUG(endIter != mLifecycleObservers.End());
 747 }
 748
 749 void TextureManager::LoadOrQueueTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 750 {
 751   switch(textureInfo.loadState)
 752   {
 753     case LoadState::NOT_STARTED:
 754     case LoadState::LOAD_FAILED:
 755     {
 756       if(mQueueLoadFlag)
 757       {
 758         QueueLoadTexture(textureInfo, observer);
 759       }
 760       else
 761       {
 762         LoadTexture(textureInfo, observer);
 763       }
 764       break;
 765     }
 766     case LoadState::UPLOADED:
 767     {
 768       if(mQueueLoadFlag)
 769       {
 770         QueueLoadTexture(textureInfo, observer);
 771       }
 772       else
 773       {
 774         // The Texture has already loaded. The other observers have already been notified.
 775         // We need to send a "late" loaded notification for this observer.
 776         EmitLoadComplete(observer, textureInfo, true);
 777       }
 778       break;
 779     }
 780     case LoadState::LOADING:
 781     case LoadState::CANCELLED:
 782     case LoadState::LOAD_FINISHED:
 783     case LoadState::WAITING_FOR_MASK:
 784     case LoadState::MASK_APPLYING:
 785     case LoadState::MASK_APPLIED:
 786     {
 787       break;
 788     }
 789   }
 790 }
 791
 792 void TextureManager::QueueLoadTexture(const TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 793 {
 794   const auto& textureId = textureInfo.textureId;
 795   mLoadQueue.PushBack(LoadQueueElement(textureId, observer));
 796
 797   observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 798 }
 799
 800 void TextureManager::LoadTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 801 {
 802   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::LoadTexture(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
 803
 804   textureInfo.loadState = LoadState::LOADING;
 805   if(!textureInfo.loadSynchronously)
 806   {
 807     auto& loadersContainer  = (textureInfo.url.IsLocalResource() || textureInfo.url.IsBufferResource()) ? mAsyncLocalLoaders : mAsyncRemoteLoaders;
 808     auto  loadingHelperIt   = loadersContainer.GetNext();
 809     auto  premultiplyOnLoad = (textureInfo.preMultiplyOnLoad && textureInfo.maskTextureId == INVALID_TEXTURE_ID) ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
 810     DALI_ASSERT_ALWAYS(loadingHelperIt != loadersContainer.End());
 811     if(textureInfo.animatedImageLoading)
 812     {
 813       loadingHelperIt->LoadAnimatedImage(textureInfo.textureId, textureInfo.animatedImageLoading, textureInfo.frameIndex);
 814     }
 815     else
 816     {
 817       loadingHelperIt->Load(textureInfo.textureId, textureInfo.url, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, textureInfo.orientationCorrection, premultiplyOnLoad);
 818     }
 819   }
 820   ObserveTexture(textureInfo, observer);
 821 }
 822
 823 void TextureManager::ProcessLoadQueue()
 824 {
 825   for(auto&& element : mLoadQueue)
 826   {
 827     if(!element.mObserver)
 828     {
 829       continue;
 830     }
 831
 832     TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(element.mTextureId);
 833     if(cacheIndex != INVALID_CACHE_INDEX)
 834     {
 835       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 836       if((textureInfo.loadState == LoadState::UPLOADED) || (textureInfo.loadState == LoadState::LOAD_FINISHED && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER))
 837       {
 838         EmitLoadComplete(element.mObserver, textureInfo, true);
 839       }
 840       else
 841       {
 842         LoadTexture(textureInfo, element.mObserver);
 843       }
 844     }
 845   }
 846   mLoadQueue.Clear();
 847 }
 848
 849 void TextureManager::ProcessRemoveQueue()
 850 {
 851   for(const auto& textureId : mRemoveQueue)
 852   {
 853     mTextureCacheManager.RemoveCache(textureId);
 854   }
 855   mRemoveQueue.Clear();
 856 }
 857
 858 void TextureManager::ObserveTexture(TextureManager::TextureInfo& textureInfo,
 859                                     TextureUploadObserver*       observer)
 860 {
 861   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ObserveTexture(): url:%s observer:%p\n", textureInfo.url.GetUrl().c_str(), observer);
 862
 863   if(observer)
 864   {
 865     textureInfo.observerList.PushBack(observer);
 866     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 867   }
 868 }
 869
 870 void TextureManager::AsyncLoadComplete(const TextureManager::TextureId& textureId, Devel::PixelBuffer pixelBuffer)
 871 {
 872   TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 873   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::AsyncLoadComplete( textureId:%d CacheIndex:%d )\n", textureId, cacheIndex.GetIndex());
 874   if(cacheIndex != INVALID_CACHE_INDEX)
 875   {
 876     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 877
 878     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));
 879
 880     if(textureInfo.loadState != LoadState::CANCELLED)
 881     {
 882       // textureInfo can be invalidated after this call (as the mTextureInfoContainer may be modified)
 883       PostLoad(textureInfo, pixelBuffer);
 884     }
 885     else
 886     {
 887       Remove(textureInfo.textureId, nullptr);
 888     }
 889   }
 890 }
 891
 892 void TextureManager::PostLoad(TextureManager::TextureInfo& textureInfo, Devel::PixelBuffer& pixelBuffer)
 893 {
 894   // Was the load successful?
 895   if(pixelBuffer && (pixelBuffer.GetWidth() != 0) && (pixelBuffer.GetHeight() != 0))
 896   {
 897     // No atlas support for now
 898     textureInfo.useAtlas      = UseAtlas::NO_ATLAS;
 899     textureInfo.preMultiplied = pixelBuffer.IsAlphaPreMultiplied();
 900
 901     if(textureInfo.storageType == StorageType::UPLOAD_TO_TEXTURE)
 902     {
 903       // If there is a mask texture ID associated with this texture, then apply the mask
 904       // if it's already loaded. If it hasn't, and the mask is still loading,
 905       // wait for the mask to finish loading.
 906       // note, If the texture is already uploaded synchronously during loading,
 907       // we don't need to apply mask.
 908       if(textureInfo.loadState != LoadState::UPLOADED &&
 909          textureInfo.maskTextureId != INVALID_TEXTURE_ID)
 910       {
 911         if(textureInfo.loadState == LoadState::MASK_APPLYING)
 912         {
 913           textureInfo.loadState = LoadState::MASK_APPLIED;
 914           UploadTexture(pixelBuffer, textureInfo);
 915           NotifyObservers(textureInfo, true);
 916         }
 917         else
 918         {
 919           LoadState maskLoadState = mTextureCacheManager.GetTextureStateInternal(textureInfo.maskTextureId);
 920           textureInfo.pixelBuffer = pixelBuffer; // Store the pixel buffer temporarily
 921           if(maskLoadState == LoadState::LOADING)
 922           {
 923             textureInfo.loadState = LoadState::WAITING_FOR_MASK;
 924           }
 925           else if(maskLoadState == LoadState::LOAD_FINISHED)
 926           {
 927             // Send New Task to Thread
 928             ApplyMask(textureInfo, textureInfo.maskTextureId);
 929           }
 930           else // maskLoadState == LoadState::LOAD_FAILED
 931           {
 932             // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
 933             DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
 934             UploadTexture(pixelBuffer, textureInfo);
 935             NotifyObservers(textureInfo, true);
 936           }
 937         }
 938       }
 939       else
 940       {
 941         UploadTexture(pixelBuffer, textureInfo);
 942         NotifyObservers(textureInfo, true);
 943       }
 944     }
 945     else
 946     {
 947       textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
 948       textureInfo.loadState   = LoadState::LOAD_FINISHED;
 949
 950       if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
 951       {
 952         NotifyObservers(textureInfo, true);
 953       }
 954       else
 955       {
 956         // Check if there was another texture waiting for this load to complete
 957         // (e.g. if this was an image mask, and its load is on a different thread)
 958         CheckForWaitingTexture(textureInfo);
 959       }
 960     }
 961   }
 962   else
 963   {
 964     textureInfo.loadState = LoadState::LOAD_FAILED;
 965     if(textureInfo.storageType != StorageType::KEEP_PIXEL_BUFFER)
 966     {
 967       NotifyObservers(textureInfo, false);
 968     }
 969     else // if(textureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER) // image mask case
 970     {
 971       // Check if there was another texture waiting for this load to complete
 972       // (e.g. if this was an image mask, and its load is on a different thread)
 973       CheckForWaitingTexture(textureInfo);
 974     }
 975   }
 976 }
 977
 978 void TextureManager::CheckForWaitingTexture(TextureManager::TextureInfo& maskTextureInfo)
 979 {
 980   // Search the cache, checking if any texture has this texture id as a
 981   // maskTextureId:
 982   const std::size_t size = mTextureCacheManager.size();
 983
 984   const bool maskLoadSuccess = maskTextureInfo.loadState == LoadState::LOAD_FINISHED ? true : false;
 985
 986   // TODO : Refactorize here to not iterate whole cached image.
 987   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
 988   {
 989     if(mTextureCacheManager[cacheIndex].maskTextureId == maskTextureInfo.textureId &&
 990        mTextureCacheManager[cacheIndex].loadState == LoadState::WAITING_FOR_MASK)
 991     {
 992       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 993
 994       if(maskLoadSuccess)
 995       {
 996         // Send New Task to Thread
 997         ApplyMask(textureInfo, maskTextureInfo.textureId);
 998       }
 999       else
1000       {
1001         // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1002         DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1003         UploadTexture(textureInfo.pixelBuffer, textureInfo);
1004         NotifyObservers(textureInfo, true);
1005       }
1006     }
1007   }
1008 }
1009
1010 void TextureManager::ApplyMask(TextureManager::TextureInfo& textureInfo, const TextureManager::TextureId& maskTextureId)
1011 {
1012   TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
1013   if(maskCacheIndex != INVALID_CACHE_INDEX)
1014   {
1015     Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
1016     Devel::PixelBuffer pixelBuffer     = textureInfo.pixelBuffer;
1017     textureInfo.pixelBuffer.Reset();
1018
1019     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ApplyMask(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
1020
1021     textureInfo.loadState   = LoadState::MASK_APPLYING;
1022     auto& loadersContainer  = (textureInfo.url.IsLocalResource() || textureInfo.url.IsBufferResource()) ? mAsyncLocalLoaders : mAsyncRemoteLoaders;
1023     auto  loadingHelperIt   = loadersContainer.GetNext();
1024     auto  premultiplyOnLoad = textureInfo.preMultiplyOnLoad ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
1025     DALI_ASSERT_ALWAYS(loadingHelperIt != loadersContainer.End());
1026     loadingHelperIt->ApplyMask(textureInfo.textureId, pixelBuffer, maskPixelBuffer, textureInfo.scaleFactor, textureInfo.cropToMask, premultiplyOnLoad);
1027   }
1028 }
1029
1030 void TextureManager::UploadTexture(Devel::PixelBuffer& pixelBuffer, TextureManager::TextureInfo& textureInfo)
1031 {
1032   if(textureInfo.loadState != LoadState::UPLOADED && textureInfo.useAtlas != UseAtlas::USE_ATLAS)
1033   {
1034     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "  TextureManager::UploadTexture() New Texture for textureId:%d\n", textureInfo.textureId);
1035
1036     // Check if this pixelBuffer is premultiplied
1037     textureInfo.preMultiplied = pixelBuffer.IsAlphaPreMultiplied();
1038
1039     auto& renderingAddOn = RenderingAddOn::Get();
1040     if(renderingAddOn.IsValid())
1041     {
1042       renderingAddOn.CreateGeometry(textureInfo.textureId, pixelBuffer);
1043     }
1044
1045     Texture texture = Texture::New(Dali::TextureType::TEXTURE_2D, pixelBuffer.GetPixelFormat(), pixelBuffer.GetWidth(), pixelBuffer.GetHeight());
1046
1047     PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer);
1048     texture.Upload(pixelData);
1049     if(!textureInfo.textureSet)
1050     {
1051       textureInfo.textureSet = TextureSet::New();
1052     }
1053     textureInfo.textureSet.SetTexture(0u, texture);
1054   }
1055
1056   // Update the load state.
1057   // Note: This is regardless of success as we care about whether a
1058   // load attempt is in progress or not.  If unsuccessful, a broken
1059   // image is still loaded.
1060   textureInfo.loadState = LoadState::UPLOADED;
1061 }
1062
1063 void TextureManager::NotifyObservers(TextureManager::TextureInfo& textureInfo, const bool& success)
1064 {
1065   TextureId textureId = textureInfo.textureId;
1066
1067   // If there is an observer: Notify the load is complete, whether successful or not,
1068   // and erase it from the list
1069   TextureInfo* info = &textureInfo;
1070
1071   if(info->animatedImageLoading)
1072   {
1073     // If loading failed, we don't need to get frameCount and frameInterval.
1074     if(success)
1075     {
1076       info->frameCount    = info->animatedImageLoading.GetImageCount();
1077       info->frameInterval = info->animatedImageLoading.GetFrameInterval(info->frameIndex);
1078     }
1079     info->animatedImageLoading.Reset();
1080   }
1081
1082   mQueueLoadFlag = true;
1083
1084   // Reverse observer list that we can pop_back the observer.
1085   std::reverse(info->observerList.Begin(), info->observerList.End());
1086
1087   while(info->observerList.Count())
1088   {
1089     TextureUploadObserver* observer = *(info->observerList.End() - 1u);
1090
1091     // During LoadComplete() a Control ResourceReady() signal is emitted.
1092     // During that signal the app may add remove /add Textures (e.g. via
1093     // ImageViews).
1094     // It is possible for observers to be removed from the observer list,
1095     // and it is also possible for the mTextureInfoContainer to be modified,
1096     // invalidating the reference to the textureInfo struct.
1097     // Texture load requests for the same URL are deferred until the end of this
1098     // method.
1099     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));
1100
1101     // It is possible for the observer to be deleted.
1102     // Disconnect and remove the observer first.
1103     observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1104
1105     info->observerList.Erase(info->observerList.End() - 1u);
1106
1107     EmitLoadComplete(observer, *info, success);
1108
1109     // Get the textureInfo from the container again as it may have been invalidated.
1110     TextureCacheIndex textureInfoIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1111     if(textureInfoIndex == INVALID_CACHE_INDEX)
1112     {
1113       break; // texture has been removed - can stop.
1114     }
1115     info = &mTextureCacheManager[textureInfoIndex];
1116   }
1117
1118   mQueueLoadFlag = false;
1119   ProcessLoadQueue();
1120   ProcessRemoveQueue();
1121
1122   if(info->storageType == StorageType::RETURN_PIXEL_BUFFER && info->observerList.Count() == 0)
1123   {
1124     Remove(info->textureId, nullptr);
1125   }
1126 }
1127
1128 void TextureManager::ObserverDestroyed(TextureUploadObserver* observer)
1129 {
1130   const std::size_t size = mTextureCacheManager.size();
1131   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1132   {
1133     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1134     for(TextureInfo::ObserverListType::Iterator j = textureInfo.observerList.Begin();
1135         j != textureInfo.observerList.End();)
1136     {
1137       if(*j == observer)
1138       {
1139         j = textureInfo.observerList.Erase(j);
1140       }
1141       else
1142       {
1143         ++j;
1144       }
1145     }
1146   }
1147
1148   // Remove element from the LoadQueue
1149   for(auto&& element : mLoadQueue)
1150   {
1151     if(element.mObserver == observer)
1152     {
1153       element.mObserver = nullptr;
1154     }
1155   }
1156 }
1157
1158 Dali::Geometry TextureManager::GetRenderGeometry(const TextureManager::TextureId& textureId, std::uint32_t& frontElements, std::uint32_t& backElements)
1159 {
1160   return RenderingAddOn::Get().IsValid() ? RenderingAddOn::Get().GetGeometry(textureId, frontElements, backElements) : Geometry();
1161 }
1162
1163 void TextureManager::EmitLoadComplete(TextureUploadObserver* observer, TextureManager::TextureInfo& textureInfo, const bool& success)
1164 {
1165   if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1166   {
1167     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::PIXEL_BUFFER, textureInfo.pixelBuffer, textureInfo.url.GetUrl(), textureInfo.preMultiplied));
1168   }
1169   else if(textureInfo.isAnimatedImageFormat)
1170   {
1171     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::ANIMATED_IMAGE_TEXTURE, textureInfo.textureId, textureInfo.frameCount, textureInfo.frameInterval));
1172   }
1173   else
1174   {
1175     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::TEXTURE, textureInfo.textureId, textureInfo.textureSet, (textureInfo.useAtlas == UseAtlas::USE_ATLAS) ? true : false, textureInfo.atlasRect, textureInfo.preMultiplied));
1176   }
1177 }
1178
1179 } // namespace Internal
1180
1181 } // namespace Toolkit
1182
1183 } // namespace Dali