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