dali-toolkit/internal/texture-manager/texture-manager-impl.cpp

   1 /*
   2  * Copyright (c) 2023 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 <dali-toolkit/internal/texture-manager/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/adaptor-framework/adaptor.h>
  26 #include <dali/integration-api/debug.h>
  27 #include <dali/public-api/rendering/geometry.h>
  28
  29 // INTERNAL HEADERS
  30 #include <dali-toolkit/internal/texture-manager/texture-async-loading-helper.h>
  31 #include <dali-toolkit/internal/texture-manager/texture-cache-manager.h>
  32 #include <dali-toolkit/internal/visuals/image-atlas-manager.h>
  33 #include <dali-toolkit/internal/visuals/rendering-addon.h>
  34
  35 namespace
  36 {
  37 constexpr auto INITIAL_HASH_NUMBER = size_t{0u};
  38
  39 constexpr auto TEXTURE_INDEX      = 0u; ///< The Index for texture
  40 constexpr auto MASK_TEXTURE_INDEX = 1u; ///< The Index for mask texture
  41
  42 constexpr auto NUMBER_OF_LOCAL_LOADER_THREADS_ENV  = "DALI_TEXTURE_LOCAL_THREADS";
  43 constexpr auto NUMBER_OF_REMOTE_LOADER_THREADS_ENV = "DALI_TEXTURE_REMOTE_THREADS";
  44 constexpr auto LOAD_IMAGE_YUV_PLANES_ENV           = "DALI_LOAD_IMAGE_YUV_PLANES";
  45
  46 bool NeedToLoadYuvPlanes()
  47 {
  48   auto loadYuvPlanesString = Dali::EnvironmentVariable::GetEnvironmentVariable(LOAD_IMAGE_YUV_PLANES_ENV);
  49   bool loadYuvPlanes       = loadYuvPlanesString ? std::atoi(loadYuvPlanesString) : false;
  50   return loadYuvPlanes;
  51 }
  52 } // namespace
  53
  54 namespace Dali
  55 {
  56 namespace Toolkit
  57 {
  58 namespace Internal
  59 {
  60 #ifdef DEBUG_ENABLED
  61 // Define logfilter Internal namespace level so other files (e.g. texture-cache-manager.cpp) can also use this filter.
  62 Debug::Filter* gTextureManagerLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_TEXTURE_MANAGER");
  63
  64 // clang-format off
  65 #define GET_LOAD_STATE_STRING(loadState) \
  66   loadState == TextureManagerType::LoadState::NOT_STARTED      ? "NOT_STARTED"      : \
  67   loadState == TextureManagerType::LoadState::LOADING          ? "LOADING"          : \
  68   loadState == TextureManagerType::LoadState::LOAD_FINISHED    ? "LOAD_FINISHED"    : \
  69   loadState == TextureManagerType::LoadState::WAITING_FOR_MASK ? "WAITING_FOR_MASK" : \
  70   loadState == TextureManagerType::LoadState::MASK_APPLYING    ? "MASK_APPLYING"    : \
  71   loadState == TextureManagerType::LoadState::MASK_APPLIED     ? "MASK_APPLIED"     : \
  72   loadState == TextureManagerType::LoadState::UPLOADED         ? "UPLOADED"         : \
  73   loadState == TextureManagerType::LoadState::CANCELLED        ? "CANCELLED"        : \
  74   loadState == TextureManagerType::LoadState::MASK_CANCELLED   ? "MASK_CANCELLED"   : \
  75   loadState == TextureManagerType::LoadState::LOAD_FAILED      ? "LOAD_FAILED"      : \
  76                                                                  "Unknown"
  77 // clang-format on
  78 #endif
  79
  80 namespace
  81 {
  82 const uint32_t DEFAULT_ATLAS_SIZE(1024u);               ///< This size can fit 8 by 8 images of average size 128 * 128
  83 const Vector4  FULL_ATLAS_RECT(0.0f, 0.0f, 1.0f, 1.0f); ///< UV Rectangle that covers the full Texture
  84
  85 void PreMultiply(Devel::PixelBuffer pixelBuffer, TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
  86 {
  87   if(Pixel::HasAlpha(pixelBuffer.GetPixelFormat()))
  88   {
  89     if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
  90     {
  91       pixelBuffer.MultiplyColorByAlpha();
  92     }
  93   }
  94   else
  95   {
  96     preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
  97   }
  98 }
  99
 100 } // Anonymous namespace
 101
 102 TextureManager::MaskingData::MaskingData()
 103 : mAlphaMaskUrl(),
 104   mAlphaMaskId(INVALID_TEXTURE_ID),
 105   mContentScaleFactor(1.0f),
 106   mCropToMask(true),
 107   mPreappliedMasking(true),
 108   mMaskImageLoadingFailed(false)
 109 {
 110 }
 111
 112 TextureManager::TextureManager()
 113 : mTextureCacheManager(),
 114   mAsyncLoader(std::unique_ptr<TextureAsyncLoadingHelper>(new TextureAsyncLoadingHelper(*this))),
 115   mLifecycleObservers(),
 116   mLoadQueue(),
 117   mLoadingQueueTextureId(INVALID_TEXTURE_ID),
 118   mRemoveQueue(),
 119   mLoadYuvPlanes(NeedToLoadYuvPlanes()),
 120   mRemoveProcessorRegistered(false)
 121 {
 122   // Initialize the AddOn
 123   RenderingAddOn::Get();
 124 }
 125
 126 TextureManager::~TextureManager()
 127 {
 128   if(mRemoveProcessorRegistered && Adaptor::IsAvailable())
 129   {
 130     Adaptor::Get().UnregisterProcessor(*this, true);
 131     mRemoveProcessorRegistered = false;
 132   }
 133
 134   for(auto iter = mLifecycleObservers.Begin(), endIter = mLifecycleObservers.End(); iter != endIter; ++iter)
 135   {
 136     (*iter)->TextureManagerDestroyed();
 137   }
 138 }
 139
 140 TextureSet TextureManager::LoadAnimatedImageTexture(
 141   const VisualUrl&                url,
 142   Dali::AnimatedImageLoading      animatedImageLoading,
 143   const uint32_t&                 frameIndex,
 144   TextureManager::TextureId&      textureId,
 145   MaskingDataPointer&             maskInfo,
 146   const Dali::ImageDimensions&    desiredSize,
 147   const Dali::FittingMode::Type&  fittingMode,
 148   const Dali::SamplingMode::Type& samplingMode,
 149   const bool&                     synchronousLoading,
 150   TextureUploadObserver*          textureObserver,
 151   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 152 {
 153   TextureSet textureSet;
 154
 155   if(synchronousLoading)
 156   {
 157     Devel::PixelBuffer pixelBuffer;
 158     if(animatedImageLoading)
 159     {
 160       pixelBuffer = animatedImageLoading.LoadFrame(frameIndex, desiredSize, fittingMode, samplingMode);
 161     }
 162     if(!pixelBuffer)
 163     {
 164       DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous loading is failed\n");
 165     }
 166     else
 167     {
 168       Texture maskTexture;
 169       if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 170       {
 171         Devel::PixelBuffer maskPixelBuffer = LoadImageFromFile(maskInfo->mAlphaMaskUrl.GetUrl(), desiredSize, fittingMode, samplingMode, true);
 172         if(maskPixelBuffer)
 173         {
 174           if(!maskInfo->mPreappliedMasking)
 175           {
 176             PixelData maskPixelData = Devel::PixelBuffer::Convert(maskPixelBuffer); // takes ownership of buffer
 177             maskTexture             = Texture::New(Dali::TextureType::TEXTURE_2D, maskPixelData.GetPixelFormat(), maskPixelData.GetWidth(), maskPixelData.GetHeight());
 178             maskTexture.Upload(maskPixelData);
 179           }
 180           else
 181           {
 182             pixelBuffer.ApplyMask(maskPixelBuffer, maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 183           }
 184         }
 185         else
 186         {
 187           DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous mask image loading is failed\n");
 188         }
 189       }
 190
 191       if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 192       {
 193         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 194       }
 195
 196       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer); // takes ownership of buffer
 197       if(!textureSet)
 198       {
 199         Texture texture = Texture::New(Dali::TextureType::TEXTURE_2D, pixelData.GetPixelFormat(), pixelData.GetWidth(), pixelData.GetHeight());
 200         texture.Upload(pixelData);
 201         textureSet = TextureSet::New();
 202         textureSet.SetTexture(TEXTURE_INDEX, texture);
 203         if(maskTexture)
 204         {
 205           textureSet.SetTexture(MASK_TEXTURE_INDEX, maskTexture);
 206         }
 207       }
 208     }
 209   }
 210   else
 211   {
 212     TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 213     float     contentScaleFactor = 1.0f;
 214     bool      cropToMask         = false;
 215     if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 216     {
 217       maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? StorageType::KEEP_PIXEL_BUFFER : StorageType::KEEP_TEXTURE);
 218       alphaMaskId            = maskInfo->mAlphaMaskId;
 219       if(maskInfo->mPreappliedMasking)
 220       {
 221         contentScaleFactor = maskInfo->mContentScaleFactor;
 222         cropToMask         = maskInfo->mCropToMask;
 223       }
 224     }
 225
 226     textureId = RequestLoadInternal(url, alphaMaskId, textureId, contentScaleFactor, desiredSize, fittingMode, samplingMode, UseAtlas::NO_ATLAS, cropToMask, StorageType::UPLOAD_TO_TEXTURE, textureObserver, true, TextureManager::ReloadPolicy::CACHED, preMultiplyOnLoad, animatedImageLoading, frameIndex, false);
 227
 228     TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 229     if(loadState == TextureManager::LoadState::UPLOADED)
 230     {
 231       // LoadComplete has already been called - keep the same texture set
 232       textureSet = GetTextureSet(textureId);
 233     }
 234   }
 235
 236   return textureSet;
 237 }
 238
 239 Devel::PixelBuffer TextureManager::LoadPixelBuffer(
 240   const VisualUrl&                url,
 241   const Dali::ImageDimensions&    desiredSize,
 242   const Dali::FittingMode::Type&  fittingMode,
 243   const Dali::SamplingMode::Type& samplingMode,
 244   const bool&                     synchronousLoading,
 245   TextureUploadObserver*          textureObserver,
 246   const bool&                     orientationCorrection,
 247   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 248 {
 249   Devel::PixelBuffer pixelBuffer;
 250   if(synchronousLoading)
 251   {
 252     if(url.IsValid())
 253     {
 254       if(url.IsBufferResource())
 255       {
 256         const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 257         if(encodedImageBuffer)
 258         {
 259           pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 260         }
 261       }
 262       else
 263       {
 264         pixelBuffer = LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 265       }
 266       if(pixelBuffer && preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 267       {
 268         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 269       }
 270     }
 271   }
 272   else
 273   {
 274     RequestLoadInternal(url, INVALID_TEXTURE_ID, 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);
 275   }
 276
 277   return pixelBuffer;
 278 }
 279
 280 TextureSet TextureManager::LoadTexture(
 281   const VisualUrl&                    url,
 282   const Dali::ImageDimensions&        desiredSize,
 283   const Dali::FittingMode::Type&      fittingMode,
 284   const Dali::SamplingMode::Type&     samplingMode,
 285   MaskingDataPointer&                 maskInfo,
 286   const bool&                         synchronousLoading,
 287   TextureManager::TextureId&          textureId,
 288   Vector4&                            textureRect,
 289   Dali::ImageDimensions&              textureRectSize,
 290   bool&                               atlasingStatus,
 291   bool&                               loadingStatus,
 292   TextureUploadObserver*              textureObserver,
 293   AtlasUploadObserver*                atlasObserver,
 294   ImageAtlasManagerPtr                imageAtlasManager,
 295   const bool&                         orientationCorrection,
 296   const TextureManager::ReloadPolicy& reloadPolicy,
 297   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad)
 298 {
 299   TextureSet textureSet;
 300
 301   loadingStatus = false;
 302   textureRect   = FULL_ATLAS_RECT;
 303
 304   if(VisualUrl::TEXTURE == url.GetProtocolType())
 305   {
 306     std::string location = url.GetLocation();
 307     if(location.size() > 0u)
 308     {
 309       TextureId id                  = std::stoi(location);
 310       auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
 311       if(externalTextureInfo.textureSet)
 312       {
 313         if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 314         {
 315           // Change preMultiplyOnLoad value so make caller determine to preMultiplyAlpha or not.
 316           // TODO : Should we seperate input and output value?
 317           preMultiplyOnLoad = externalTextureInfo.preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 318         }
 319
 320         TextureId alphaMaskId = INVALID_TEXTURE_ID;
 321         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 322         {
 323           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, StorageType::KEEP_TEXTURE, synchronousLoading);
 324           alphaMaskId            = maskInfo->mAlphaMaskId;
 325
 326           // Create new textureId. this textureId is not same as location
 327           textureId = RequestLoad(url, alphaMaskId, textureId, 1.0f, desiredSize, fittingMode, samplingMode, UseAtlas::NO_ATLAS, false, textureObserver, orientationCorrection, reloadPolicy, preMultiplyOnLoad, synchronousLoading);
 328
 329           TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 330           if(loadState == TextureManager::LoadState::UPLOADED)
 331           {
 332             textureSet = GetTextureSet(textureId);
 333           }
 334         }
 335         else
 336         {
 337           // TextureId is same as location
 338           textureId = id;
 339
 340           textureSet = TextureSet::New();
 341           textureSet.SetTexture(TEXTURE_INDEX, externalTextureInfo.textureSet.GetTexture(TEXTURE_INDEX));
 342         }
 343       }
 344     }
 345   }
 346   else
 347   {
 348     // For Atlas
 349     if(synchronousLoading && atlasingStatus)
 350     {
 351       const bool synchronousAtlasAvaliable = (desiredSize != ImageDimensions() || url.IsLocalResource()) ? imageAtlasManager->CheckAtlasAvailable(url, desiredSize)
 352                                                                                                          : false;
 353       if(synchronousAtlasAvaliable)
 354       {
 355         std::vector<Devel::PixelBuffer> pixelBuffers;
 356         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, false, pixelBuffers);
 357
 358         if(!pixelBuffers.empty() && maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 359         {
 360           std::vector<Devel::PixelBuffer> maskPixelBuffers;
 361           LoadImageSynchronously(maskInfo->mAlphaMaskUrl, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, true, false, maskPixelBuffers);
 362           if(!maskPixelBuffers.empty())
 363           {
 364             pixelBuffers[0].ApplyMask(maskPixelBuffers[0], maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 365           }
 366         }
 367
 368         PixelData data;
 369         if(!pixelBuffers.empty())
 370         {
 371           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 372           data = Devel::PixelBuffer::Convert(pixelBuffers[0]); // takes ownership of buffer
 373
 374           if(data)
 375           {
 376             textureSet = imageAtlasManager->Add(textureRect, data);
 377             if(textureSet)
 378             {
 379               textureRectSize.SetWidth(data.GetWidth());
 380               textureRectSize.SetHeight(data.GetHeight());
 381             }
 382           }
 383           else
 384           {
 385             DALI_LOG_ERROR("TextureManager::LoadTexture: Synchronous Texture loading with atlasing is failed.\n");
 386           }
 387         }
 388         if(!textureSet)
 389         {
 390           atlasingStatus = false;
 391         }
 392       }
 393     }
 394
 395     if(!textureSet)
 396     {
 397       loadingStatus = true;
 398       // Atlas manager can chage desired size when it is set by 0,0.
 399       // We should store into textureRectSize only if atlasing successed.
 400       // So copy inputed desiredSize, and replace value into textureRectSize only if atlasing success.
 401       Dali::ImageDimensions atlasDesiredSize = desiredSize;
 402       if(atlasingStatus)
 403       {
 404         if(url.IsBufferResource())
 405         {
 406           const EncodedImageBuffer& encodedImageBuffer = GetEncodedImageBuffer(url.GetUrl());
 407           if(encodedImageBuffer)
 408           {
 409             textureSet = imageAtlasManager->Add(textureRect, encodedImageBuffer, desiredSize, fittingMode, true, atlasObserver);
 410           }
 411         }
 412         else
 413         {
 414           textureSet = imageAtlasManager->Add(textureRect, url, atlasDesiredSize, fittingMode, true, atlasObserver);
 415         }
 416       }
 417       if(!textureSet) // big image, no atlasing or atlasing failed
 418       {
 419         atlasingStatus = false;
 420
 421         TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 422         float     contentScaleFactor = 1.0f;
 423         bool      cropToMask         = false;
 424         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 425         {
 426           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? StorageType::KEEP_PIXEL_BUFFER : StorageType::KEEP_TEXTURE, synchronousLoading);
 427           alphaMaskId            = maskInfo->mAlphaMaskId;
 428           if(maskInfo && maskInfo->mPreappliedMasking)
 429           {
 430             contentScaleFactor = maskInfo->mContentScaleFactor;
 431             cropToMask         = maskInfo->mCropToMask;
 432           }
 433         }
 434
 435         textureId = RequestLoad(
 436           url,
 437           alphaMaskId,
 438           textureId,
 439           contentScaleFactor,
 440           desiredSize,
 441           fittingMode,
 442           samplingMode,
 443           UseAtlas::NO_ATLAS,
 444           cropToMask,
 445           textureObserver,
 446           orientationCorrection,
 447           reloadPolicy,
 448           preMultiplyOnLoad,
 449           synchronousLoading);
 450
 451         TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 452         if(loadState == TextureManager::LoadState::UPLOADED)
 453         {
 454           // LoadComplete has already been called - keep the same texture set
 455           textureSet = GetTextureSet(textureId);
 456         }
 457
 458         // If we are loading the texture, or waiting for the ready signal handler to complete, inform
 459         // caller that they need to wait.
 460         loadingStatus = (loadState == TextureManager::LoadState::LOADING ||
 461                          loadState == TextureManager::LoadState::WAITING_FOR_MASK ||
 462                          loadState == TextureManager::LoadState::MASK_APPLYING ||
 463                          loadState == TextureManager::LoadState::MASK_APPLIED ||
 464                          loadState == TextureManager::LoadState::NOT_STARTED ||
 465                          mLoadingQueueTextureId != INVALID_TEXTURE_ID);
 466       }
 467       else
 468       {
 469         textureRectSize = atlasDesiredSize;
 470       }
 471     }
 472   }
 473
 474   if(synchronousLoading)
 475   {
 476     loadingStatus = false;
 477   }
 478
 479   return textureSet;
 480 }
 481
 482 TextureManager::TextureId TextureManager::RequestLoad(
 483   const VisualUrl&                    url,
 484   const ImageDimensions&              desiredSize,
 485   const Dali::FittingMode::Type&      fittingMode,
 486   const Dali::SamplingMode::Type&     samplingMode,
 487   const UseAtlas&                     useAtlas,
 488   TextureUploadObserver*              observer,
 489   const bool&                         orientationCorrection,
 490   const TextureManager::ReloadPolicy& reloadPolicy,
 491   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 492   const bool&                         synchronousLoading)
 493 {
 494   return RequestLoadInternal(url, INVALID_TEXTURE_ID, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, useAtlas, false, StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 495 }
 496
 497 TextureManager::TextureId TextureManager::RequestLoad(
 498   const VisualUrl&                    url,
 499   const TextureManager::TextureId&    maskTextureId,
 500   const TextureManager::TextureId&    previousTextureId,
 501   const float&                        contentScale,
 502   const Dali::ImageDimensions&        desiredSize,
 503   const Dali::FittingMode::Type&      fittingMode,
 504   const Dali::SamplingMode::Type&     samplingMode,
 505   const TextureManager::UseAtlas&     useAtlas,
 506   const bool&                         cropToMask,
 507   TextureUploadObserver*              observer,
 508   const bool&                         orientationCorrection,
 509   const TextureManager::ReloadPolicy& reloadPolicy,
 510   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 511   const bool&                         synchronousLoading)
 512 {
 513   return RequestLoadInternal(url, maskTextureId, previousTextureId, contentScale, desiredSize, fittingMode, samplingMode, useAtlas, cropToMask, StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 514 }
 515
 516 TextureManager::TextureId TextureManager::RequestMaskLoad(
 517   const VisualUrl& maskUrl,
 518   StorageType      storageType,
 519   const bool&      synchronousLoading)
 520 {
 521   // Use the normal load procedure to get the alpha mask.
 522   auto preMultiply = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 523   return RequestLoadInternal(maskUrl, INVALID_TEXTURE_ID, INVALID_TEXTURE_ID, 1.0f, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, UseAtlas::NO_ATLAS, false, storageType, NULL, true, TextureManager::ReloadPolicy::CACHED, preMultiply, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 524 }
 525
 526 TextureManager::TextureId TextureManager::RequestLoadInternal(
 527   const VisualUrl&                    url,
 528   const TextureManager::TextureId&    maskTextureId,
 529   const TextureManager::TextureId&    previousTextureId,
 530   const float&                        contentScale,
 531   const Dali::ImageDimensions&        desiredSize,
 532   const Dali::FittingMode::Type&      fittingMode,
 533   const Dali::SamplingMode::Type&     samplingMode,
 534   const TextureManager::UseAtlas&     useAtlas,
 535   const bool&                         cropToMask,
 536   const TextureManager::StorageType&  storageType,
 537   TextureUploadObserver*              observer,
 538   const bool&                         orientationCorrection,
 539   const TextureManager::ReloadPolicy& reloadPolicy,
 540   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 541   Dali::AnimatedImageLoading          animatedImageLoading,
 542   const std::uint32_t&                frameIndex,
 543   const bool&                         synchronousLoading)
 544 {
 545   TextureHash       textureHash   = INITIAL_HASH_NUMBER;
 546   TextureCacheIndex cacheIndex    = INVALID_CACHE_INDEX;
 547   bool              loadYuvPlanes = (mLoadYuvPlanes && maskTextureId == INVALID_TEXTURE_ID && storageType == StorageType::UPLOAD_TO_TEXTURE);
 548
 549   if(storageType != StorageType::RETURN_PIXEL_BUFFER)
 550   {
 551     textureHash = mTextureCacheManager.GenerateHash(url, desiredSize, fittingMode, samplingMode, useAtlas, maskTextureId, cropToMask, frameIndex);
 552
 553     // Look up the texture by hash. Note: The extra parameters are used in case of a hash collision.
 554     cacheIndex = mTextureCacheManager.FindCachedTexture(textureHash, url, desiredSize, fittingMode, samplingMode, useAtlas, storageType, maskTextureId, cropToMask, preMultiplyOnLoad, (animatedImageLoading) ? true : false, frameIndex);
 555   }
 556
 557   TextureManager::TextureId textureId = INVALID_TEXTURE_ID;
 558   // Check if the requested Texture exists in the cache.
 559   if(cacheIndex != INVALID_CACHE_INDEX)
 560   {
 561     if(TextureManager::ReloadPolicy::CACHED == reloadPolicy || TextureManager::INVALID_TEXTURE_ID == previousTextureId)
 562     {
 563       // Mark this texture being used by another client resource, or Reload forced without request load before.
 564       // Forced reload which have current texture before, would replace the current texture.
 565       // without the need for incrementing the reference count.
 566       ++(mTextureCacheManager[cacheIndex].referenceCount);
 567     }
 568     textureId = mTextureCacheManager[cacheIndex].textureId;
 569
 570     // Update preMultiplyOnLoad value. It should be changed according to preMultiplied value of the cached info.
 571     preMultiplyOnLoad = mTextureCacheManager[cacheIndex].preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 572     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) Using cached texture id@%d, textureId=%d, maskTextureId=%d, prevTextureId=%d, frameindex=%d, premultiplied=%d, refCount=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, maskTextureId, previousTextureId, frameIndex, mTextureCacheManager[cacheIndex].preMultiplied ? 1 : 0, static_cast<int>(mTextureCacheManager[cacheIndex].referenceCount));
 573   }
 574
 575   if(textureId == INVALID_TEXTURE_ID) // There was no caching, or caching not required
 576   {
 577     textureId = mTextureCacheManager.GenerateTextureId();
 578
 579     bool preMultiply = (preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 580
 581     // Cache new texutre, and get cacheIndex.
 582     cacheIndex = mTextureCacheManager.AppendCache(TextureInfo(textureId, maskTextureId, url, desiredSize, contentScale, fittingMode, samplingMode, false, cropToMask, useAtlas, textureHash, orientationCorrection, preMultiply, animatedImageLoading, frameIndex, loadYuvPlanes));
 583     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) New texture, cacheIndex:%d, textureId=%d, maskTextureId=%d, frameindex=%d premultiply=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, maskTextureId, frameIndex, preMultiply);
 584   }
 585
 586   // The below code path is common whether we are using the cache or not.
 587   // The textureInfoIndex now refers to either a pre-existing cached TextureInfo,
 588   // or a new TextureInfo just created.
 589   TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 590   textureInfo.maskTextureId         = maskTextureId;
 591   textureInfo.storageType           = storageType;
 592   textureInfo.orientationCorrection = orientationCorrection;
 593
 594   // the case using external texture has already been loaded texture, so change its status to WAITING_FOR_MASK.
 595   if(url.GetProtocolType() == VisualUrl::TEXTURE)
 596   {
 597     if(textureInfo.loadState != LoadState::UPLOADED)
 598     {
 599       textureInfo.loadState = TextureManager::LoadState::WAITING_FOR_MASK;
 600     }
 601   }
 602
 603   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureInfo loadState:%s\n", GET_LOAD_STATE_STRING(textureInfo.loadState));
 604
 605   // Force reloading of texture by setting loadState unless already loading or cancelled.
 606   if(TextureManager::ReloadPolicy::FORCED == reloadPolicy &&
 607      TextureManager::LoadState::LOADING != textureInfo.loadState &&
 608      TextureManager::LoadState::WAITING_FOR_MASK != textureInfo.loadState &&
 609      TextureManager::LoadState::MASK_APPLYING != textureInfo.loadState &&
 610      TextureManager::LoadState::MASK_APPLIED != textureInfo.loadState &&
 611      TextureManager::LoadState::CANCELLED != textureInfo.loadState &&
 612      TextureManager::LoadState::MASK_CANCELLED != textureInfo.loadState)
 613   {
 614     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "TextureManager::RequestLoad( url=%s observer=%p ) ForcedReload cacheIndex:%d, textureId=%d, maskTextureId=%d, prevTextureId=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, maskTextureId, previousTextureId);
 615     textureInfo.loadState = TextureManager::LoadState::NOT_STARTED;
 616   }
 617
 618   if(!synchronousLoading)
 619   {
 620     // Check if we should add the observer.
 621     // Only do this if we have not loaded yet and it will not have loaded by the end of this method.
 622     switch(textureInfo.loadState)
 623     {
 624       case TextureManager::LoadState::LOAD_FAILED: // Failed notifies observer which then stops observing.
 625       case TextureManager::LoadState::NOT_STARTED:
 626       {
 627         LoadOrQueueTexture(textureInfo, observer); // If called inside NotifyObservers, queues until afterwards
 628         break;
 629       }
 630       case TextureManager::LoadState::LOADING:
 631       case TextureManager::LoadState::WAITING_FOR_MASK:
 632       case TextureManager::LoadState::MASK_APPLYING:
 633       case TextureManager::LoadState::MASK_APPLIED:
 634       {
 635         // Do not observe even we reload forced when texture is already loading state.
 636         if(TextureManager::ReloadPolicy::CACHED == reloadPolicy || TextureManager::INVALID_TEXTURE_ID == previousTextureId)
 637         {
 638           ObserveTexture(textureInfo, observer);
 639         }
 640         break;
 641       }
 642       case TextureManager::LoadState::UPLOADED:
 643       {
 644         if(observer)
 645         {
 646           LoadOrQueueTexture(textureInfo, observer);
 647         }
 648         break;
 649       }
 650       case TextureManager::LoadState::CANCELLED:
 651       {
 652         // A cancelled texture hasn't finished loading yet. Treat as a loading texture
 653         // (it's ref count has already been incremented, above)
 654         textureInfo.loadState = TextureManager::LoadState::LOADING;
 655         ObserveTexture(textureInfo, observer);
 656         break;
 657       }
 658       case TextureManager::LoadState::MASK_CANCELLED:
 659       {
 660         // A cancelled texture hasn't finished mask applying yet. Treat as a mask applying texture
 661         // (it's ref count has already been incremented, above)
 662         textureInfo.loadState = TextureManager::LoadState::MASK_APPLYING;
 663         ObserveTexture(textureInfo, observer);
 664         break;
 665       }
 666       case TextureManager::LoadState::LOAD_FINISHED:
 667       {
 668         // Loading has already completed.
 669         if(observer && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
 670         {
 671           LoadOrQueueTexture(textureInfo, observer);
 672         }
 673         break;
 674       }
 675     }
 676   }
 677   else
 678   {
 679     // If the image is already finished to load, use cached texture.
 680     // We don't need to consider Observer because this is synchronous loading.
 681     if(!(textureInfo.loadState == TextureManager::LoadState::UPLOADED ||
 682          textureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED))
 683     {
 684       if(url.GetProtocolType() == VisualUrl::TEXTURE)
 685       {
 686         // Get external textureSet from cacheManager.
 687         std::string location = textureInfo.url.GetLocation();
 688         if(!location.empty())
 689         {
 690           TextureId id                  = std::stoi(location);
 691           auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
 692           textureInfo.textures.push_back(externalTextureInfo.textureSet.GetTexture(0));
 693           textureInfo.loadState = LoadState::UPLOADED;
 694         }
 695       }
 696       else
 697       {
 698         std::vector<Devel::PixelBuffer> pixelBuffers;
 699         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, loadYuvPlanes, pixelBuffers);
 700
 701         if(pixelBuffers.empty())
 702         {
 703           // If pixelBuffer loading is failed in synchronously, call RequestRemove() method.
 704           RequestRemove(textureId, nullptr);
 705           return INVALID_TEXTURE_ID;
 706         }
 707
 708         if(storageType == StorageType::KEEP_PIXEL_BUFFER) // For the mask image loading.
 709         {
 710           textureInfo.pixelBuffer = pixelBuffers[0]; // Store the pixel data
 711           textureInfo.loadState   = LoadState::LOAD_FINISHED;
 712         }
 713         else // For the image loading.
 714         {
 715           Texture maskTexture;
 716           if(maskTextureId != INVALID_TEXTURE_ID)
 717           {
 718             TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 719             if(maskCacheIndex != INVALID_CACHE_INDEX)
 720             {
 721               if(mTextureCacheManager[maskCacheIndex].storageType == StorageType::KEEP_PIXEL_BUFFER)
 722               {
 723                 Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
 724                 if(maskPixelBuffer)
 725                 {
 726                   pixelBuffers[0].ApplyMask(maskPixelBuffer, contentScale, cropToMask);
 727                 }
 728                 else
 729                 {
 730                   DALI_LOG_ERROR("Mask image cached invalid pixel buffer!\n");
 731                 }
 732               }
 733             }
 734             else
 735             {
 736               DALI_LOG_ERROR("Mask image is not stored in cache.\n");
 737             }
 738           }
 739           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 740
 741           // Upload texture
 742           UploadTextures(pixelBuffers, textureInfo);
 743         }
 744       }
 745     }
 746   }
 747
 748   return textureId;
 749 }
 750
 751 void TextureManager::RequestRemove(const TextureManager::TextureId& textureId, TextureUploadObserver* observer)
 752 {
 753   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestRemove( textureId=%d observer=%p )\n", textureId, observer);
 754
 755   // Queue to remove.
 756   if(textureId != INVALID_TEXTURE_ID)
 757   {
 758     if(observer)
 759     {
 760       // Remove observer from cached texture info
 761       TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 762       if(textureCacheIndex != INVALID_CACHE_INDEX)
 763       {
 764         TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
 765         RemoveTextureObserver(textureInfo, observer);
 766       }
 767     }
 768     mRemoveQueue.PushBack(textureId);
 769
 770     if(!mRemoveProcessorRegistered && Adaptor::IsAvailable())
 771     {
 772       mRemoveProcessorRegistered = true;
 773       Adaptor::Get().RegisterProcessor(*this, true);
 774     }
 775   }
 776 }
 777
 778 void TextureManager::Remove(const TextureManager::TextureId& textureId)
 779 {
 780   if(textureId != INVALID_TEXTURE_ID)
 781   {
 782     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 783     if(textureCacheIndex != INVALID_CACHE_INDEX)
 784     {
 785       TextureManager::TextureId maskTextureId = INVALID_TEXTURE_ID;
 786       TextureInfo&              textureInfo(mTextureCacheManager[textureCacheIndex]);
 787       // We only need to consider maskTextureId when texture's loadState is not cancelled. Because it is already deleted.
 788       if(textureInfo.loadState != LoadState::CANCELLED && textureInfo.loadState != LoadState::MASK_CANCELLED)
 789       {
 790         if(textureInfo.maskTextureId != INVALID_TEXTURE_ID)
 791         {
 792           maskTextureId = textureInfo.maskTextureId;
 793         }
 794       }
 795
 796       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::Remove( textureId=%d ) cacheIndex:%d removal maskTextureId=%d, loadState=%s\n", textureId, textureCacheIndex.GetIndex(), maskTextureId, GET_LOAD_STATE_STRING(textureInfo.loadState));
 797
 798       // Remove textureId in CacheManager. Now, textureInfo is invalidate.
 799       mTextureCacheManager.RemoveCache(textureInfo);
 800
 801       // Remove maskTextureId in CacheManager
 802       if(maskTextureId != INVALID_TEXTURE_ID)
 803       {
 804         TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 805         if(maskCacheIndex != INVALID_CACHE_INDEX)
 806         {
 807           TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
 808
 809           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::Remove mask texture( maskTextureId=%d ) cacheIndex:%d, loadState=%s\n", maskTextureId, maskCacheIndex.GetIndex(), GET_LOAD_STATE_STRING(maskTextureInfo.loadState));
 810
 811           mTextureCacheManager.RemoveCache(maskTextureInfo);
 812         }
 813       }
 814     }
 815   }
 816 }
 817
 818 void TextureManager::ProcessRemoveQueue()
 819 {
 820   // Note that RemoveQueue is not be changed during Remove().
 821   for(auto&& textureId : mRemoveQueue)
 822   {
 823     if(textureId != INVALID_TEXTURE_ID)
 824     {
 825       Remove(textureId);
 826     }
 827   }
 828   mRemoveQueue.Clear();
 829 }
 830
 831 void TextureManager::Process(bool postProcessor)
 832 {
 833   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::Process()\n");
 834
 835   ProcessRemoveQueue();
 836
 837   if(Adaptor::IsAvailable())
 838   {
 839     Adaptor::Get().UnregisterProcessor(*this, true);
 840     mRemoveProcessorRegistered = false;
 841   }
 842 }
 843
 844 void TextureManager::LoadImageSynchronously(
 845   const VisualUrl&                 url,
 846   const Dali::ImageDimensions&     desiredSize,
 847   const Dali::FittingMode::Type&   fittingMode,
 848   const Dali::SamplingMode::Type&  samplingMode,
 849   const bool&                      orientationCorrection,
 850   const bool&                      loadYuvPlanes,
 851   std::vector<Devel::PixelBuffer>& pixelBuffers)
 852 {
 853   Devel::PixelBuffer pixelBuffer;
 854   if(url.IsBufferResource())
 855   {
 856     const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 857     if(encodedImageBuffer)
 858     {
 859       pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 860     }
 861   }
 862   else
 863   {
 864     if(loadYuvPlanes)
 865     {
 866       Dali::LoadImagePlanesFromFile(url.GetUrl(), pixelBuffers, desiredSize, fittingMode, samplingMode, orientationCorrection);
 867     }
 868     else
 869     {
 870       pixelBuffer = Dali::LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 871     }
 872   }
 873
 874   if(pixelBuffer)
 875   {
 876     pixelBuffers.push_back(pixelBuffer);
 877   }
 878 }
 879
 880 void TextureManager::AddObserver(TextureManager::LifecycleObserver& observer)
 881 {
 882   // make sure an observer doesn't observe the same object twice
 883   // otherwise it will get multiple calls to ObjectDestroyed()
 884   DALI_ASSERT_DEBUG(mLifecycleObservers.End() == std::find(mLifecycleObservers.Begin(), mLifecycleObservers.End(), &observer));
 885   mLifecycleObservers.PushBack(&observer);
 886 }
 887
 888 void TextureManager::RemoveObserver(TextureManager::LifecycleObserver& observer)
 889 {
 890   // Find the observer...
 891   auto endIter = mLifecycleObservers.End();
 892   for(auto iter = mLifecycleObservers.Begin(); iter != endIter; ++iter)
 893   {
 894     if((*iter) == &observer)
 895     {
 896       mLifecycleObservers.Erase(iter);
 897       break;
 898     }
 899   }
 900   DALI_ASSERT_DEBUG(endIter != mLifecycleObservers.End());
 901 }
 902
 903 void TextureManager::LoadOrQueueTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 904 {
 905   switch(textureInfo.loadState)
 906   {
 907     case LoadState::NOT_STARTED:
 908     case LoadState::LOAD_FAILED:
 909     {
 910       if(mLoadingQueueTextureId != INVALID_TEXTURE_ID)
 911       {
 912         QueueLoadTexture(textureInfo, observer);
 913       }
 914       else
 915       {
 916         LoadTexture(textureInfo, observer);
 917       }
 918       break;
 919     }
 920     case LoadState::UPLOADED:
 921     {
 922       if(mLoadingQueueTextureId != INVALID_TEXTURE_ID)
 923       {
 924         QueueLoadTexture(textureInfo, observer);
 925       }
 926       else
 927       {
 928         // The Texture has already loaded. The other observers have already been notified.
 929         // We need to send a "late" loaded notification for this observer.
 930         if(observer)
 931         {
 932           EmitLoadComplete(observer, textureInfo, true);
 933         }
 934       }
 935       break;
 936     }
 937     case LoadState::LOADING:
 938     case LoadState::CANCELLED:
 939     case LoadState::MASK_CANCELLED:
 940     case LoadState::LOAD_FINISHED:
 941     case LoadState::WAITING_FOR_MASK:
 942     case LoadState::MASK_APPLYING:
 943     case LoadState::MASK_APPLIED:
 944     {
 945       break;
 946     }
 947   }
 948 }
 949
 950 void TextureManager::QueueLoadTexture(const TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 951 {
 952   const auto& textureId = textureInfo.textureId;
 953   mLoadQueue.PushBack(QueueElement(textureId, observer));
 954
 955   if(observer)
 956   {
 957     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Connect DestructionSignal to observer:%p\n", observer);
 958     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 959   }
 960 }
 961
 962 void TextureManager::LoadTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 963 {
 964   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::LoadTexture(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
 965   textureInfo.loadState = LoadState::LOADING;
 966   if(!textureInfo.loadSynchronously)
 967   {
 968     auto premultiplyOnLoad = (textureInfo.preMultiplyOnLoad && textureInfo.maskTextureId == INVALID_TEXTURE_ID) ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
 969     if(textureInfo.animatedImageLoading)
 970     {
 971       mAsyncLoader->LoadAnimatedImage(textureInfo.textureId, textureInfo.animatedImageLoading, textureInfo.frameIndex, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, premultiplyOnLoad);
 972     }
 973     else
 974     {
 975       mAsyncLoader->Load(textureInfo.textureId, textureInfo.url, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, textureInfo.orientationCorrection, premultiplyOnLoad, textureInfo.loadYuvPlanes);
 976     }
 977   }
 978   ObserveTexture(textureInfo, observer);
 979 }
 980
 981 void TextureManager::ProcessLoadQueue()
 982 {
 983   for(auto&& element : mLoadQueue)
 984   {
 985     if(element.mTextureId == INVALID_TEXTURE_ID)
 986     {
 987       continue;
 988     }
 989
 990     TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(element.mTextureId);
 991     if(cacheIndex != INVALID_CACHE_INDEX)
 992     {
 993       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 994
 995       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::ProcessLoadQueue() textureId=%d, observer=%p, cacheIndex=@%d, loadState:%s\n", element.mTextureId, element.mObserver, cacheIndex.GetIndex(), GET_LOAD_STATE_STRING(textureInfo.loadState));
 996
 997       if((textureInfo.loadState == LoadState::UPLOADED) || (textureInfo.loadState == LoadState::LOAD_FINISHED && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER))
 998       {
 999         if(element.mObserver)
1000         {
1001           EmitLoadComplete(element.mObserver, textureInfo, true);
1002         }
1003       }
1004       else if(textureInfo.loadState == LoadState::LOADING)
1005       {
1006         // Note : LOADING state texture cannot be queue.
1007         // This case be occured when same texture id are queue in mLoadQueue.
1008         ObserveTexture(textureInfo, element.mObserver);
1009       }
1010       else
1011       {
1012         LoadTexture(textureInfo, element.mObserver);
1013       }
1014     }
1015   }
1016   mLoadQueue.Clear();
1017 }
1018
1019 void TextureManager::ObserveTexture(TextureManager::TextureInfo& textureInfo,
1020                                     TextureUploadObserver*       observer)
1021 {
1022   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ObserveTexture(): url:%s observer:%p\n", textureInfo.url.GetUrl().c_str(), observer);
1023
1024   if(observer)
1025   {
1026     textureInfo.observerList.PushBack(observer);
1027
1028     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Connect DestructionSignal to observer:%p\n", observer);
1029     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
1030   }
1031 }
1032
1033 void TextureManager::AsyncLoadComplete(const TextureManager::TextureId& textureId, std::vector<Devel::PixelBuffer>& pixelBuffers)
1034 {
1035   TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1036   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::AsyncLoadComplete( textureId:%d CacheIndex:%d )\n", textureId, cacheIndex.GetIndex());
1037   if(cacheIndex != INVALID_CACHE_INDEX)
1038   {
1039     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1040
1041     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));
1042     if(textureInfo.loadState != LoadState::CANCELLED && textureInfo.loadState != LoadState::MASK_CANCELLED)
1043     {
1044       // textureInfo can be invalidated after this call (as the mTextureInfoContainer may be modified)
1045       PostLoad(textureInfo, pixelBuffers);
1046     }
1047     else
1048     {
1049       RequestRemove(textureInfo.textureId, nullptr);
1050     }
1051   }
1052 }
1053
1054 void TextureManager::PostLoad(TextureManager::TextureInfo& textureInfo, std::vector<Devel::PixelBuffer>& pixelBuffers)
1055 {
1056   // Was the load successful?
1057   if(!pixelBuffers.empty())
1058   {
1059     if(pixelBuffers.size() == 1)
1060     {
1061       Devel::PixelBuffer pixelBuffer = pixelBuffers[0];
1062       if(pixelBuffer && (pixelBuffer.GetWidth() != 0) && (pixelBuffer.GetHeight() != 0))
1063       {
1064         // No atlas support for now
1065         textureInfo.useAtlas      = UseAtlas::NO_ATLAS;
1066         textureInfo.preMultiplied = pixelBuffer.IsAlphaPreMultiplied();
1067
1068         if(textureInfo.storageType == StorageType::UPLOAD_TO_TEXTURE)
1069         {
1070           // If there is a mask texture ID associated with this texture, then apply the mask
1071           // if it's already loaded. If it hasn't, and the mask is still loading,
1072           // wait for the mask to finish loading.
1073           // note, If the texture is already uploaded synchronously during loading,
1074           // we don't need to apply mask.
1075           if(textureInfo.loadState != LoadState::UPLOADED &&
1076              textureInfo.maskTextureId != INVALID_TEXTURE_ID)
1077           {
1078             if(textureInfo.loadState == LoadState::MASK_APPLYING)
1079             {
1080               textureInfo.loadState = LoadState::MASK_APPLIED;
1081               UploadTextures(pixelBuffers, textureInfo);
1082               NotifyObservers(textureInfo, true);
1083             }
1084             else
1085             {
1086               LoadState maskLoadState = mTextureCacheManager.GetTextureStateInternal(textureInfo.maskTextureId);
1087               textureInfo.pixelBuffer = pixelBuffer; // Store the pixel buffer temporarily
1088               if(maskLoadState == LoadState::LOADING)
1089               {
1090                 textureInfo.loadState = LoadState::WAITING_FOR_MASK;
1091               }
1092               else if(maskLoadState == LoadState::LOAD_FINISHED || maskLoadState == LoadState::UPLOADED)
1093               {
1094                 // Send New Task to Thread
1095                 TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1096                 if(maskCacheIndex != INVALID_CACHE_INDEX)
1097                 {
1098                   TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1099                   if(maskTextureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER)
1100                   {
1101                     // Send New Task to Thread
1102                     ApplyMask(textureInfo, textureInfo.maskTextureId);
1103                   }
1104                   else if(maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1105                   {
1106                     // Upload image texture. textureInfo.loadState will be UPLOADED.
1107                     UploadTextures(pixelBuffers, textureInfo);
1108
1109                     // notify mask texture set.
1110                     NotifyObservers(textureInfo, true);
1111                   }
1112                 }
1113               }
1114               else // maskLoadState == LoadState::LOAD_FAILED
1115               {
1116                 // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1117                 DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1118                 UploadTextures(pixelBuffers, textureInfo);
1119                 NotifyObservers(textureInfo, true);
1120               }
1121             }
1122           }
1123           else
1124           {
1125             UploadTextures(pixelBuffers, textureInfo);
1126             NotifyObservers(textureInfo, true);
1127           }
1128         }
1129         else
1130         {
1131           textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
1132           textureInfo.loadState   = LoadState::LOAD_FINISHED;
1133
1134           if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1135           {
1136             NotifyObservers(textureInfo, true);
1137           }
1138           else // for the StorageType::KEEP_PIXEL_BUFFER and StorageType::KEEP_TEXTURE
1139           {
1140             // Check if there was another texture waiting for this load to complete
1141             // (e.g. if this was an image mask, and its load is on a different thread)
1142             CheckForWaitingTexture(textureInfo);
1143           }
1144         }
1145       }
1146     }
1147     else
1148     {
1149       // YUV case
1150       // No atlas support for now
1151       textureInfo.useAtlas      = UseAtlas::NO_ATLAS;
1152       textureInfo.preMultiplied = false;
1153
1154       UploadTextures(pixelBuffers, textureInfo);
1155       NotifyObservers(textureInfo, true);
1156     }
1157   }
1158   else
1159   {
1160     textureInfo.loadState = LoadState::LOAD_FAILED;
1161     if(textureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER || textureInfo.storageType == StorageType::KEEP_TEXTURE)
1162     {
1163       // Check if there was another texture waiting for this load to complete
1164       // (e.g. if this was an image mask, and its load is on a different thread)
1165       CheckForWaitingTexture(textureInfo);
1166     }
1167     else
1168     {
1169       NotifyObservers(textureInfo, false);
1170     }
1171   }
1172 }
1173
1174 void TextureManager::CheckForWaitingTexture(TextureManager::TextureInfo& maskTextureInfo)
1175 {
1176   if(maskTextureInfo.loadState == LoadState::LOAD_FINISHED &&
1177      maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1178   {
1179     // Upload mask texture. textureInfo.loadState will be UPLOADED.
1180     std::vector<Devel::PixelBuffer> pixelBuffers;
1181     pixelBuffers.push_back(maskTextureInfo.pixelBuffer);
1182     UploadTextures(pixelBuffers, maskTextureInfo);
1183   }
1184
1185   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): maskTextureId=%d, maskTextureUrl=%s\n", maskTextureInfo.textureId, maskTextureInfo.url.GetUrl().c_str());
1186
1187   // Search the cache, checking if any texture has this texture id as a maskTextureId
1188   const std::size_t size = mTextureCacheManager.size();
1189
1190   // Keep notify observer required textureIds.
1191   // Note : NotifyObservers can change mTextureCacheManager cache struct. We should check id's validation before notify.
1192   std::vector<TextureId> notifyRequiredTextureIds;
1193
1194   // TODO : Refactorize here to not iterate whole cached image.
1195   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1196   {
1197     if(mTextureCacheManager[cacheIndex].maskTextureId == maskTextureInfo.textureId &&
1198        mTextureCacheManager[cacheIndex].loadState == LoadState::WAITING_FOR_MASK)
1199     {
1200       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1201
1202       if(maskTextureInfo.loadState == LoadState::LOAD_FINISHED)
1203       {
1204         if(maskTextureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER)
1205         {
1206           // Send New Task to Thread
1207           ApplyMask(textureInfo, maskTextureInfo.textureId);
1208         }
1209       }
1210       else if(maskTextureInfo.loadState == LoadState::UPLOADED)
1211       {
1212         if(maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1213         {
1214           if(textureInfo.url.GetProtocolType() == VisualUrl::TEXTURE)
1215           {
1216             // Get external textureSet from cacheManager.
1217             std::string location = textureInfo.url.GetLocation();
1218             if(!location.empty())
1219             {
1220               TextureId id                  = std::stoi(location);
1221               auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
1222               textureInfo.textures.push_back(externalTextureInfo.textureSet.GetTexture(0));
1223               textureInfo.loadState = LoadState::UPLOADED;
1224             }
1225           }
1226           else
1227           {
1228             // Upload image texture. textureInfo.loadState will be UPLOADED.
1229             std::vector<Devel::PixelBuffer> pixelBuffers;
1230             pixelBuffers.push_back(textureInfo.pixelBuffer);
1231             UploadTextures(pixelBuffers, textureInfo);
1232           }
1233
1234           // Increase reference counts for notify required textureId.
1235           // Now we can assume that we don't remove & re-assign this textureId
1236           // during NotifyObserver signal emit.
1237           maskTextureInfo.referenceCount++;
1238           textureInfo.referenceCount++;
1239
1240           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): Ready to notify textureId=%d\n", textureInfo.textureId);
1241
1242           notifyRequiredTextureIds.push_back(textureInfo.textureId);
1243         }
1244       }
1245       else // maskTextureInfo.loadState == LoadState::LOAD_FAILED
1246       {
1247         // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1248         DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1249         std::vector<Devel::PixelBuffer> pixelBuffers;
1250         pixelBuffers.push_back(textureInfo.pixelBuffer);
1251         UploadTextures(pixelBuffers, textureInfo);
1252
1253         // Increase reference counts for notify required textureId.
1254         // Now we can assume that we don't remove & re-assign this textureId
1255         // during NotifyObserver signal emit.
1256         maskTextureInfo.referenceCount++;
1257         textureInfo.referenceCount++;
1258
1259         DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): Ready to notify textureId=%d\n", textureInfo.textureId);
1260
1261         notifyRequiredTextureIds.push_back(textureInfo.textureId);
1262       }
1263     }
1264   }
1265
1266   // Notify textures are masked
1267   for(const auto textureId : notifyRequiredTextureIds)
1268   {
1269     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1270     if(textureCacheIndex != INVALID_CACHE_INDEX)
1271     {
1272       TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
1273       NotifyObservers(textureInfo, true);
1274     }
1275   }
1276
1277   // Decrease reference count
1278   for(const auto textureId : notifyRequiredTextureIds)
1279   {
1280     RequestRemove(textureId, nullptr);
1281   }
1282 }
1283
1284 void TextureManager::ApplyMask(TextureManager::TextureInfo& textureInfo, const TextureManager::TextureId& maskTextureId)
1285 {
1286   TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
1287   if(maskCacheIndex != INVALID_CACHE_INDEX)
1288   {
1289     Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
1290     Devel::PixelBuffer pixelBuffer     = textureInfo.pixelBuffer;
1291     textureInfo.pixelBuffer.Reset();
1292
1293     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ApplyMask(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
1294
1295     textureInfo.loadState  = LoadState::MASK_APPLYING;
1296     auto premultiplyOnLoad = textureInfo.preMultiplyOnLoad ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
1297     mAsyncLoader->ApplyMask(textureInfo.textureId, pixelBuffer, maskPixelBuffer, textureInfo.scaleFactor, textureInfo.cropToMask, premultiplyOnLoad);
1298   }
1299 }
1300
1301 void TextureManager::UploadTextures(std::vector<Devel::PixelBuffer>& pixelBuffers, TextureManager::TextureInfo& textureInfo)
1302 {
1303   if(!pixelBuffers.empty() && textureInfo.loadState != LoadState::UPLOADED && textureInfo.useAtlas != UseAtlas::USE_ATLAS)
1304   {
1305     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "  TextureManager::UploadTextures() New Texture for textureId:%d\n", textureInfo.textureId);
1306
1307     // Check if this pixelBuffer is premultiplied
1308     textureInfo.preMultiplied = pixelBuffers[0].IsAlphaPreMultiplied();
1309
1310     auto& renderingAddOn = RenderingAddOn::Get();
1311     if(renderingAddOn.IsValid())
1312     {
1313       renderingAddOn.CreateGeometry(textureInfo.textureId, pixelBuffers[0]);
1314     }
1315
1316     // Remove previous textures and insert new textures
1317     textureInfo.textures.clear();
1318
1319     for(auto&& pixelBuffer : pixelBuffers)
1320     {
1321       Texture   texture   = Texture::New(Dali::TextureType::TEXTURE_2D, pixelBuffer.GetPixelFormat(), pixelBuffer.GetWidth(), pixelBuffer.GetHeight());
1322       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer);
1323       texture.Upload(pixelData);
1324       textureInfo.textures.push_back(texture);
1325     }
1326   }
1327
1328   // Update the load state.
1329   // Note: This is regardless of success as we care about whether a
1330   // load attempt is in progress or not.  If unsuccessful, a broken
1331   // image is still loaded.
1332   textureInfo.loadState = LoadState::UPLOADED;
1333 }
1334
1335 void TextureManager::NotifyObservers(TextureManager::TextureInfo& textureInfo, const bool& success)
1336 {
1337   TextureId textureId = textureInfo.textureId;
1338
1339   // If there is an observer: Notify the load is complete, whether successful or not,
1340   // and erase it from the list
1341   TextureInfo* info = &textureInfo;
1342
1343   if(info->animatedImageLoading)
1344   {
1345     // If loading failed, we don't need to get frameCount and frameInterval.
1346     if(success)
1347     {
1348       info->frameCount    = info->animatedImageLoading.GetImageCount();
1349       info->frameInterval = info->animatedImageLoading.GetFrameInterval(info->frameIndex);
1350     }
1351     info->animatedImageLoading.Reset();
1352   }
1353
1354   mLoadingQueueTextureId = textureId;
1355
1356   // Reverse observer list that we can pop_back the observer.
1357   std::reverse(info->observerList.Begin(), info->observerList.End());
1358
1359   while(info->observerList.Count())
1360   {
1361     TextureUploadObserver* observer = *(info->observerList.End() - 1u);
1362
1363     // During LoadComplete() a Control ResourceReady() signal is emitted.
1364     // During that signal the app may add remove /add Textures (e.g. via
1365     // ImageViews).
1366     // It is possible for observers to be removed from the observer list,
1367     // and it is also possible for the mTextureInfoContainer to be modified,
1368     // invalidating the reference to the textureInfo struct.
1369     // Texture load requests for the same URL are deferred until the end of this
1370     // method.
1371     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::NotifyObservers() observer:%p textureId:%d url:%s loadState:%s\n", observer, textureId, info->url.GetUrl().c_str(), GET_LOAD_STATE_STRING(info->loadState));
1372     // It is possible for the observer to be deleted.
1373     // Disconnect and remove the observer first.
1374     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1375     observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1376
1377     info->observerList.Erase(info->observerList.End() - 1u);
1378
1379     EmitLoadComplete(observer, *info, success);
1380
1381     // Get the textureInfo from the container again as it may have been invalidated.
1382     TextureCacheIndex textureInfoIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1383     if(textureInfoIndex == INVALID_CACHE_INDEX)
1384     {
1385       break; // texture has been removed - can stop.
1386     }
1387     info = &mTextureCacheManager[textureInfoIndex];
1388   }
1389
1390   mLoadingQueueTextureId = INVALID_TEXTURE_ID;
1391   ProcessLoadQueue();
1392
1393   if(info->storageType == StorageType::RETURN_PIXEL_BUFFER && info->observerList.Count() == 0)
1394   {
1395     RequestRemove(info->textureId, nullptr);
1396   }
1397 }
1398
1399 void TextureManager::ObserverDestroyed(TextureUploadObserver* observer)
1400 {
1401   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "TextureManager::ObserverDestroyed() observer:%p\n", observer);
1402
1403   const std::size_t size = mTextureCacheManager.size();
1404   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1405   {
1406     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1407     for(TextureInfo::ObserverListType::Iterator j = textureInfo.observerList.Begin();
1408         j != textureInfo.observerList.End();)
1409     {
1410       if(*j == observer)
1411       {
1412         j = textureInfo.observerList.Erase(j);
1413       }
1414       else
1415       {
1416         ++j;
1417       }
1418     }
1419   }
1420
1421   // Remove element from the LoadQueue
1422   for(auto&& element : mLoadQueue)
1423   {
1424     if(element.mObserver == observer)
1425     {
1426       element.mTextureId = INVALID_TEXTURE_ID;
1427       element.mObserver  = nullptr;
1428     }
1429   }
1430 }
1431
1432 Dali::Geometry TextureManager::GetRenderGeometry(const TextureManager::TextureId& textureId, std::uint32_t& frontElements, std::uint32_t& backElements)
1433 {
1434   return RenderingAddOn::Get().IsValid() ? RenderingAddOn::Get().GetGeometry(textureId, frontElements, backElements) : Geometry();
1435 }
1436
1437 void TextureManager::EmitLoadComplete(TextureUploadObserver* observer, TextureManager::TextureInfo& textureInfo, const bool& success)
1438 {
1439   if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1440   {
1441     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::PIXEL_BUFFER, textureInfo.pixelBuffer, textureInfo.url.GetUrl(), textureInfo.preMultiplied));
1442   }
1443   else
1444   {
1445     TextureSet textureSet = GetTextureSet(textureInfo);
1446     if(textureInfo.isAnimatedImageFormat)
1447     {
1448       observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::ANIMATED_IMAGE_TEXTURE, textureInfo.textureId, textureSet, textureInfo.frameCount, textureInfo.frameInterval));
1449     }
1450     else
1451     {
1452       observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::TEXTURE, textureInfo.textureId, textureSet, (textureInfo.useAtlas == UseAtlas::USE_ATLAS) ? true : false, textureInfo.atlasRect, textureInfo.preMultiplied));
1453     }
1454   }
1455 }
1456
1457 TextureSet TextureManager::GetTextureSet(const TextureManager::TextureId& textureId)
1458 {
1459   TextureSet                textureSet;
1460   TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
1461   if(loadState == TextureManager::LoadState::UPLOADED)
1462   {
1463     // LoadComplete has already been called - keep the same texture set
1464     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1465     if(textureCacheIndex != INVALID_CACHE_INDEX)
1466     {
1467       TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
1468       textureSet = GetTextureSet(textureInfo);
1469     }
1470   }
1471   else
1472   {
1473     DALI_LOG_ERROR("GetTextureSet is failed. texture is not uploaded \n");
1474   }
1475   return textureSet;
1476 }
1477
1478 TextureSet TextureManager::GetTextureSet(const TextureManager::TextureInfo& textureInfo)
1479 {
1480   TextureSet textureSet;
1481
1482   // LoadComplete has already been called - keep the same texture set
1483   textureSet = TextureSet::New();
1484   if(!textureInfo.textures.empty())
1485   {
1486     if(textureInfo.textures.size() > 1) // For YUV case
1487     {
1488       uint32_t index = 0u;
1489       for(auto&& texture : textureInfo.textures)
1490       {
1491         textureSet.SetTexture(index++, texture);
1492       }
1493     }
1494     else
1495     {
1496       textureSet.SetTexture(TEXTURE_INDEX, textureInfo.textures[0]);
1497       TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1498       if(maskCacheIndex != INVALID_CACHE_INDEX)
1499       {
1500         TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1501         if(maskTextureInfo.storageType == StorageType::UPLOAD_TO_TEXTURE || maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1502         {
1503           if(!maskTextureInfo.textures.empty())
1504           {
1505             textureSet.SetTexture(MASK_TEXTURE_INDEX, maskTextureInfo.textures[0]);
1506           }
1507         }
1508       }
1509     }
1510   }
1511   return textureSet;
1512 }
1513
1514 void TextureManager::RemoveTextureObserver(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
1515 {
1516   // Remove its observer
1517   if(observer)
1518   {
1519     const auto iterEnd = textureInfo.observerList.End();
1520     const auto iter    = std::find(textureInfo.observerList.Begin(), iterEnd, observer);
1521     if(iter != iterEnd)
1522     {
1523       // Disconnect and remove the observer.
1524       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1525       observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1526       textureInfo.observerList.Erase(iter);
1527     }
1528   }
1529 }
1530
1531 } // namespace Internal
1532
1533 } // namespace Toolkit
1534
1535 } // namespace Dali