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