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

   1 /*
   2  * Copyright (c) 2024 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/integration-api/trace.h>
  27 #include <dali/public-api/rendering/geometry.h>
  28
  29 // INTERNAL HEADERS
  30 #include <dali-toolkit/internal/texture-manager/texture-async-loading-helper.h>
  31 #include <dali-toolkit/internal/texture-manager/texture-cache-manager.h>
  32 #include <dali-toolkit/internal/visuals/image-atlas-manager.h>
  33 #include <dali-toolkit/internal/visuals/rendering-addon.h>
  34
  35 namespace
  36 {
  37 constexpr auto INITIAL_HASH_NUMBER = size_t{0u};
  38
  39 constexpr auto TEXTURE_INDEX      = 0u; ///< The Index for texture
  40 constexpr auto MASK_TEXTURE_INDEX = 1u; ///< The Index for mask texture
  41
  42 DALI_INIT_TRACE_FILTER(gTraceFilter, DALI_TRACE_IMAGE_PERFORMANCE_MARKER, false);
  43 } // namespace
  44
  45 namespace Dali
  46 {
  47 namespace Toolkit
  48 {
  49 namespace Internal
  50 {
  51 #ifdef DEBUG_ENABLED
  52 // Define logfilter Internal namespace level so other files (e.g. texture-cache-manager.cpp) can also use this filter.
  53 Debug::Filter* gTextureManagerLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_TEXTURE_MANAGER");
  54
  55 // clang-format off
  56 #define GET_LOAD_STATE_STRING(loadState) \
  57   loadState == TextureManagerType::LoadState::NOT_STARTED      ? "NOT_STARTED"      : \
  58   loadState == TextureManagerType::LoadState::LOADING          ? "LOADING"          : \
  59   loadState == TextureManagerType::LoadState::LOAD_FINISHED    ? "LOAD_FINISHED"    : \
  60   loadState == TextureManagerType::LoadState::WAITING_FOR_MASK ? "WAITING_FOR_MASK" : \
  61   loadState == TextureManagerType::LoadState::MASK_APPLYING    ? "MASK_APPLYING"    : \
  62   loadState == TextureManagerType::LoadState::MASK_APPLIED     ? "MASK_APPLIED"     : \
  63   loadState == TextureManagerType::LoadState::UPLOADED         ? "UPLOADED"         : \
  64   loadState == TextureManagerType::LoadState::CANCELLED        ? "CANCELLED"        : \
  65   loadState == TextureManagerType::LoadState::MASK_CANCELLED   ? "MASK_CANCELLED"   : \
  66   loadState == TextureManagerType::LoadState::LOAD_FAILED      ? "LOAD_FAILED"      : \
  67                                                                  "Unknown"
  68 // clang-format on
  69 #endif
  70
  71 namespace
  72 {
  73 const Vector4 FULL_ATLAS_RECT(0.0f, 0.0f, 1.0f, 1.0f); ///< UV Rectangle that covers the full Texture
  74
  75 void PreMultiply(Devel::PixelBuffer pixelBuffer, TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
  76 {
  77   if(Pixel::HasAlpha(pixelBuffer.GetPixelFormat()))
  78   {
  79     if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
  80     {
  81       pixelBuffer.MultiplyColorByAlpha();
  82     }
  83   }
  84   else
  85   {
  86     preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
  87   }
  88 }
  89
  90 } // Anonymous namespace
  91
  92 TextureManager::MaskingData::MaskingData()
  93 : mAlphaMaskUrl(),
  94   mAlphaMaskId(INVALID_TEXTURE_ID),
  95   mContentScaleFactor(1.0f),
  96   mCropToMask(true),
  97   mPreappliedMasking(true),
  98   mMaskImageLoadingFailed(false)
  99 {
 100 }
 101
 102 TextureManager::TextureManager(bool loadYuvPlanes)
 103 : mTextureCacheManager(),
 104   mAsyncLoader(std::unique_ptr<TextureAsyncLoadingHelper>(new TextureAsyncLoadingHelper(*this))),
 105   mLoadQueue(),
 106   mLoadingQueueTextureId(INVALID_TEXTURE_ID),
 107   mRemoveQueue(),
 108   mLoadYuvPlanes(loadYuvPlanes),
 109   mRemoveProcessorRegistered(false)
 110 {
 111   // Initialize the AddOn
 112   RenderingAddOn::Get();
 113 }
 114
 115 TextureManager::~TextureManager()
 116 {
 117   if(mRemoveProcessorRegistered && Adaptor::IsAvailable())
 118   {
 119     Adaptor::Get().UnregisterProcessor(*this, true);
 120     mRemoveProcessorRegistered = false;
 121   }
 122 }
 123
 124 TextureSet TextureManager::LoadAnimatedImageTexture(
 125   const VisualUrl&                url,
 126   Dali::AnimatedImageLoading      animatedImageLoading,
 127   const uint32_t                  frameIndex,
 128   TextureManager::TextureId&      textureId,
 129   MaskingDataPointer&             maskInfo,
 130   const Dali::ImageDimensions&    desiredSize,
 131   const Dali::FittingMode::Type   fittingMode,
 132   const Dali::SamplingMode::Type  samplingMode,
 133   const bool                      synchronousLoading,
 134   TextureUploadObserver*          textureObserver,
 135   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 136 {
 137   TextureSet textureSet;
 138
 139   if(synchronousLoading)
 140   {
 141     Devel::PixelBuffer pixelBuffer;
 142     if(animatedImageLoading)
 143     {
 144       pixelBuffer = animatedImageLoading.LoadFrame(frameIndex, desiredSize, fittingMode, samplingMode);
 145     }
 146     if(!pixelBuffer)
 147     {
 148       DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous loading is failed\n");
 149     }
 150     else
 151     {
 152       Texture maskTexture;
 153       if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 154       {
 155         Devel::PixelBuffer maskPixelBuffer = LoadImageFromFile(maskInfo->mAlphaMaskUrl.GetUrl(), desiredSize, fittingMode, samplingMode, true);
 156         if(maskPixelBuffer)
 157         {
 158           if(!maskInfo->mPreappliedMasking)
 159           {
 160             PixelData maskPixelData = Devel::PixelBuffer::Convert(maskPixelBuffer); // takes ownership of buffer
 161             maskTexture             = Texture::New(Dali::TextureType::TEXTURE_2D, maskPixelData.GetPixelFormat(), maskPixelData.GetWidth(), maskPixelData.GetHeight());
 162             maskTexture.Upload(maskPixelData);
 163           }
 164           else
 165           {
 166             pixelBuffer.ApplyMask(maskPixelBuffer, maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 167           }
 168         }
 169         else
 170         {
 171           DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous mask image loading is failed\n");
 172         }
 173       }
 174
 175       if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 176       {
 177         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 178       }
 179
 180       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer); // takes ownership of buffer
 181       if(!textureSet)
 182       {
 183         Texture texture = Texture::New(Dali::TextureType::TEXTURE_2D, pixelData.GetPixelFormat(), pixelData.GetWidth(), pixelData.GetHeight());
 184         texture.Upload(pixelData);
 185         textureSet = TextureSet::New();
 186         textureSet.SetTexture(TEXTURE_INDEX, texture);
 187         if(maskTexture)
 188         {
 189           textureSet.SetTexture(MASK_TEXTURE_INDEX, maskTexture);
 190         }
 191       }
 192     }
 193   }
 194   else
 195   {
 196     TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 197     float     contentScaleFactor = 1.0f;
 198     bool      cropToMask         = false;
 199     if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 200     {
 201       maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? TextureManager::StorageType::KEEP_PIXEL_BUFFER : TextureManager::StorageType::KEEP_TEXTURE);
 202       alphaMaskId            = maskInfo->mAlphaMaskId;
 203       if(maskInfo->mPreappliedMasking)
 204       {
 205         contentScaleFactor = maskInfo->mContentScaleFactor;
 206         cropToMask         = maskInfo->mCropToMask;
 207       }
 208     }
 209
 210     textureId = RequestLoadInternal(url, alphaMaskId, textureId, contentScaleFactor, desiredSize, fittingMode, samplingMode, cropToMask, TextureManager::StorageType::UPLOAD_TO_TEXTURE, textureObserver, true, TextureManager::ReloadPolicy::CACHED, preMultiplyOnLoad, animatedImageLoading, frameIndex, false);
 211
 212     TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 213     if(loadState == TextureManager::LoadState::UPLOADED)
 214     {
 215       // LoadComplete has already been called - keep the same texture set
 216       textureSet = GetTextureSet(textureId);
 217     }
 218   }
 219
 220   return textureSet;
 221 }
 222
 223 Devel::PixelBuffer TextureManager::LoadPixelBuffer(
 224   const VisualUrl&                url,
 225   const Dali::ImageDimensions&    desiredSize,
 226   const Dali::FittingMode::Type   fittingMode,
 227   const Dali::SamplingMode::Type  samplingMode,
 228   const bool                      synchronousLoading,
 229   TextureUploadObserver*          textureObserver,
 230   const bool                      orientationCorrection,
 231   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 232 {
 233   Devel::PixelBuffer pixelBuffer;
 234   if(synchronousLoading)
 235   {
 236     if(url.IsValid())
 237     {
 238       if(url.IsBufferResource())
 239       {
 240         const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 241         if(encodedImageBuffer)
 242         {
 243           pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 244         }
 245       }
 246       else
 247       {
 248         pixelBuffer = LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 249       }
 250       if(pixelBuffer && preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 251       {
 252         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 253       }
 254     }
 255   }
 256   else
 257   {
 258     RequestLoadInternal(url, INVALID_TEXTURE_ID, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, false, TextureManager::StorageType::RETURN_PIXEL_BUFFER, textureObserver, orientationCorrection, TextureManager::ReloadPolicy::FORCED, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, false);
 259   }
 260
 261   return pixelBuffer;
 262 }
 263
 264 TextureSet TextureManager::LoadTexture(
 265   const VisualUrl&                   url,
 266   const Dali::ImageDimensions&       desiredSize,
 267   const Dali::FittingMode::Type      fittingMode,
 268   const Dali::SamplingMode::Type     samplingMode,
 269   MaskingDataPointer&                maskInfo,
 270   const bool                         synchronousLoading,
 271   TextureManager::TextureId&         textureId,
 272   Vector4&                           textureRect,
 273   Dali::ImageDimensions&             textureRectSize,
 274   bool&                              atlasingStatus,
 275   bool&                              loadingStatus,
 276   TextureUploadObserver*             textureObserver,
 277   AtlasUploadObserver*               atlasObserver,
 278   ImageAtlasManagerPtr               imageAtlasManager,
 279   const bool                         orientationCorrection,
 280   const TextureManager::ReloadPolicy reloadPolicy,
 281   TextureManager::MultiplyOnLoad&    preMultiplyOnLoad)
 282 {
 283   TextureSet textureSet;
 284
 285   loadingStatus = false;
 286   textureRect   = FULL_ATLAS_RECT;
 287
 288   if(VisualUrl::TEXTURE == url.GetProtocolType())
 289   {
 290     std::string location = url.GetLocation();
 291     if(location.size() > 0u)
 292     {
 293       TextureId id                  = std::stoi(location);
 294       auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
 295       if(externalTextureInfo.textureSet)
 296       {
 297         if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 298         {
 299           // Change preMultiplyOnLoad value so make caller determine to preMultiplyAlpha or not.
 300           // TODO : Should we seperate input and output value?
 301           preMultiplyOnLoad = externalTextureInfo.preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 302         }
 303
 304         TextureId alphaMaskId = INVALID_TEXTURE_ID;
 305         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 306         {
 307           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, TextureManager::StorageType::KEEP_TEXTURE, synchronousLoading);
 308           alphaMaskId            = maskInfo->mAlphaMaskId;
 309
 310           // Create new textureId. this textureId is not same as location
 311           textureId = RequestLoad(url, alphaMaskId, textureId, 1.0f, desiredSize, fittingMode, samplingMode, false, textureObserver, orientationCorrection, reloadPolicy, preMultiplyOnLoad, synchronousLoading);
 312
 313           TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 314           if(loadState == TextureManager::LoadState::UPLOADED)
 315           {
 316             textureSet = GetTextureSet(textureId);
 317           }
 318         }
 319         else
 320         {
 321           // TextureId is same as location
 322           textureId = id;
 323
 324           textureSet = TextureSet::New();
 325           textureSet.SetTexture(TEXTURE_INDEX, externalTextureInfo.textureSet.GetTexture(TEXTURE_INDEX));
 326         }
 327       }
 328     }
 329   }
 330   else
 331   {
 332     // For Atlas
 333     if(synchronousLoading && atlasingStatus)
 334     {
 335       const bool synchronousAtlasAvaliable = (desiredSize != ImageDimensions() || url.IsLocalResource()) ? imageAtlasManager->CheckAtlasAvailable(url, desiredSize)
 336                                                                                                          : false;
 337       if(synchronousAtlasAvaliable)
 338       {
 339         std::vector<Devel::PixelBuffer> pixelBuffers;
 340         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, false, pixelBuffers);
 341
 342         if(!pixelBuffers.empty() && maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 343         {
 344           std::vector<Devel::PixelBuffer> maskPixelBuffers;
 345           LoadImageSynchronously(maskInfo->mAlphaMaskUrl, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, true, false, maskPixelBuffers);
 346           if(!maskPixelBuffers.empty())
 347           {
 348             pixelBuffers[0].ApplyMask(maskPixelBuffers[0], maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 349           }
 350         }
 351
 352         PixelData data;
 353         if(!pixelBuffers.empty())
 354         {
 355           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 356           data = Devel::PixelBuffer::Convert(pixelBuffers[0]); // takes ownership of buffer
 357
 358           if(data)
 359           {
 360             textureSet = imageAtlasManager->Add(textureRect, data);
 361             if(textureSet)
 362             {
 363               textureRectSize.SetWidth(data.GetWidth());
 364               textureRectSize.SetHeight(data.GetHeight());
 365             }
 366           }
 367           else
 368           {
 369             DALI_LOG_ERROR("TextureManager::LoadTexture: Synchronous Texture loading with atlasing is failed.\n");
 370           }
 371         }
 372         if(!textureSet)
 373         {
 374           atlasingStatus = false;
 375         }
 376       }
 377     }
 378
 379     if(!textureSet)
 380     {
 381       loadingStatus = true;
 382       // Atlas manager can chage desired size when it is set by 0,0.
 383       // We should store into textureRectSize only if atlasing successed.
 384       // So copy inputed desiredSize, and replace value into textureRectSize only if atlasing success.
 385       Dali::ImageDimensions atlasDesiredSize = desiredSize;
 386       if(atlasingStatus)
 387       {
 388         if(url.IsBufferResource())
 389         {
 390           const EncodedImageBuffer& encodedImageBuffer = GetEncodedImageBuffer(url.GetUrl());
 391           if(encodedImageBuffer)
 392           {
 393             textureSet = imageAtlasManager->Add(textureRect, encodedImageBuffer, desiredSize, fittingMode, true, atlasObserver);
 394           }
 395         }
 396         else
 397         {
 398           textureSet = imageAtlasManager->Add(textureRect, url, atlasDesiredSize, fittingMode, true, atlasObserver);
 399         }
 400       }
 401       if(!textureSet) // big image, no atlasing or atlasing failed
 402       {
 403         atlasingStatus = false;
 404
 405         TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 406         float     contentScaleFactor = 1.0f;
 407         bool      cropToMask         = false;
 408         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 409         {
 410           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? TextureManager::StorageType::KEEP_PIXEL_BUFFER : TextureManager::StorageType::KEEP_TEXTURE, synchronousLoading);
 411           alphaMaskId            = maskInfo->mAlphaMaskId;
 412           if(maskInfo && maskInfo->mPreappliedMasking)
 413           {
 414             contentScaleFactor = maskInfo->mContentScaleFactor;
 415             cropToMask         = maskInfo->mCropToMask;
 416           }
 417         }
 418
 419         textureId = RequestLoad(
 420           url,
 421           alphaMaskId,
 422           textureId,
 423           contentScaleFactor,
 424           desiredSize,
 425           fittingMode,
 426           samplingMode,
 427           cropToMask,
 428           textureObserver,
 429           orientationCorrection,
 430           reloadPolicy,
 431           preMultiplyOnLoad,
 432           synchronousLoading);
 433
 434         TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 435         if(loadState == TextureManager::LoadState::UPLOADED)
 436         {
 437           // LoadComplete has already been called - keep the same texture set
 438           textureSet = GetTextureSet(textureId);
 439         }
 440
 441         // If we are loading the texture, or waiting for the ready signal handler to complete, inform
 442         // caller that they need to wait.
 443         loadingStatus = (loadState == TextureManager::LoadState::LOADING ||
 444                          loadState == TextureManager::LoadState::WAITING_FOR_MASK ||
 445                          loadState == TextureManager::LoadState::MASK_APPLYING ||
 446                          loadState == TextureManager::LoadState::MASK_APPLIED ||
 447                          loadState == TextureManager::LoadState::NOT_STARTED ||
 448                          mLoadingQueueTextureId != INVALID_TEXTURE_ID);
 449       }
 450       else
 451       {
 452         textureRectSize = atlasDesiredSize;
 453       }
 454     }
 455   }
 456
 457   if(synchronousLoading)
 458   {
 459     loadingStatus = false;
 460   }
 461
 462   return textureSet;
 463 }
 464
 465 TextureManager::TextureId TextureManager::RequestLoad(
 466   const VisualUrl&                   url,
 467   const ImageDimensions&             desiredSize,
 468   const Dali::FittingMode::Type      fittingMode,
 469   const Dali::SamplingMode::Type     samplingMode,
 470   TextureUploadObserver*             observer,
 471   const bool                         orientationCorrection,
 472   const TextureManager::ReloadPolicy reloadPolicy,
 473   TextureManager::MultiplyOnLoad&    preMultiplyOnLoad,
 474   const bool                         synchronousLoading)
 475 {
 476   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);
 477 }
 478
 479 TextureManager::TextureId TextureManager::RequestLoad(
 480   const VisualUrl&                   url,
 481   const TextureManager::TextureId    maskTextureId,
 482   const TextureManager::TextureId    previousTextureId,
 483   const float                        contentScale,
 484   const Dali::ImageDimensions&       desiredSize,
 485   const Dali::FittingMode::Type      fittingMode,
 486   const Dali::SamplingMode::Type     samplingMode,
 487   const bool                         cropToMask,
 488   TextureUploadObserver*             observer,
 489   const bool                         orientationCorrection,
 490   const TextureManager::ReloadPolicy reloadPolicy,
 491   TextureManager::MultiplyOnLoad&    preMultiplyOnLoad,
 492   const bool                         synchronousLoading)
 493 {
 494   return RequestLoadInternal(url, maskTextureId, previousTextureId, contentScale, desiredSize, fittingMode, samplingMode, cropToMask, TextureManager::StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 495 }
 496
 497 TextureManager::TextureId TextureManager::RequestMaskLoad(
 498   const VisualUrl&                  maskUrl,
 499   const TextureManager::StorageType storageType,
 500   const bool                        synchronousLoading)
 501 {
 502   // Use the normal load procedure to get the alpha mask.
 503   auto preMultiply = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 504   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);
 505 }
 506
 507 TextureManager::TextureId TextureManager::RequestLoadInternal(
 508   const VisualUrl&                   url,
 509   const TextureManager::TextureId    maskTextureId,
 510   const TextureManager::TextureId    previousTextureId,
 511   const float                        contentScale,
 512   const Dali::ImageDimensions&       desiredSize,
 513   const Dali::FittingMode::Type      fittingMode,
 514   const Dali::SamplingMode::Type     samplingMode,
 515   const bool                         cropToMask,
 516   const TextureManager::StorageType  storageType,
 517   TextureUploadObserver*             observer,
 518   const bool                         orientationCorrection,
 519   const TextureManager::ReloadPolicy reloadPolicy,
 520   TextureManager::MultiplyOnLoad&    preMultiplyOnLoad,
 521   Dali::AnimatedImageLoading         animatedImageLoading,
 522   const uint32_t                     frameIndex,
 523   const bool                         synchronousLoading)
 524 {
 525   TextureHash       textureHash   = INITIAL_HASH_NUMBER;
 526   TextureCacheIndex cacheIndex    = INVALID_CACHE_INDEX;
 527   bool              loadYuvPlanes = (mLoadYuvPlanes && maskTextureId == INVALID_TEXTURE_ID && storageType == TextureManager::StorageType::UPLOAD_TO_TEXTURE);
 528
 529   if(storageType != TextureManager::StorageType::RETURN_PIXEL_BUFFER)
 530   {
 531     textureHash = mTextureCacheManager.GenerateHash(url, desiredSize, fittingMode, samplingMode, maskTextureId, cropToMask, frameIndex);
 532
 533     // Look up the texture by hash. Note: The extra parameters are used in case of a hash collision.
 534     cacheIndex = mTextureCacheManager.FindCachedTexture(textureHash, url, desiredSize, fittingMode, samplingMode, storageType, maskTextureId, cropToMask, preMultiplyOnLoad, (animatedImageLoading) ? true : false, frameIndex);
 535   }
 536
 537   TextureManager::TextureId textureId = INVALID_TEXTURE_ID;
 538   // Check if the requested Texture exists in the cache.
 539   if(cacheIndex != INVALID_CACHE_INDEX)
 540   {
 541     if(TextureManager::ReloadPolicy::CACHED == reloadPolicy || TextureManager::INVALID_TEXTURE_ID == previousTextureId)
 542     {
 543       // Mark this texture being used by another client resource, or Reload forced without request load before.
 544       // Forced reload which have current texture before, would replace the current texture.
 545       // without the need for incrementing the reference count.
 546       ++(mTextureCacheManager[cacheIndex].referenceCount);
 547     }
 548     textureId = mTextureCacheManager[cacheIndex].textureId;
 549
 550     // Update preMultiplyOnLoad value. It should be changed according to preMultiplied value of the cached info.
 551     preMultiplyOnLoad = mTextureCacheManager[cacheIndex].preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 552     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));
 553   }
 554
 555   if(textureId == INVALID_TEXTURE_ID) // There was no caching, or caching not required
 556   {
 557     textureId = mTextureCacheManager.GenerateTextureId();
 558
 559     bool preMultiply = (preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 560
 561     // Cache new texutre, and get cacheIndex.
 562     cacheIndex = mTextureCacheManager.AppendCache(TextureInfo(textureId, maskTextureId, url, desiredSize, contentScale, fittingMode, samplingMode, false, cropToMask, textureHash, orientationCorrection, preMultiply, animatedImageLoading, frameIndex, loadYuvPlanes));
 563     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);
 564   }
 565
 566   // The below code path is common whether we are using the cache or not.
 567   // The textureInfoIndex now refers to either a pre-existing cached TextureInfo,
 568   // or a new TextureInfo just created.
 569   TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 570   textureInfo.maskTextureId         = maskTextureId;
 571   textureInfo.storageType           = storageType;
 572   textureInfo.orientationCorrection = orientationCorrection;
 573
 574   // the case using external texture has already been loaded texture, so change its status to WAITING_FOR_MASK.
 575   if(url.GetProtocolType() == VisualUrl::TEXTURE)
 576   {
 577     if(textureInfo.loadState != TextureManager::LoadState::UPLOADED)
 578     {
 579       textureInfo.preMultiplied = (preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 580       textureInfo.loadState     = TextureManager::LoadState::WAITING_FOR_MASK;
 581     }
 582   }
 583
 584   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureInfo loadState:%s\n", GET_LOAD_STATE_STRING(textureInfo.loadState));
 585
 586   // Force reloading of texture by setting loadState unless already loading or cancelled.
 587   if(TextureManager::ReloadPolicy::FORCED == reloadPolicy &&
 588      TextureManager::LoadState::LOADING != textureInfo.loadState &&
 589      TextureManager::LoadState::WAITING_FOR_MASK != textureInfo.loadState &&
 590      TextureManager::LoadState::MASK_APPLYING != textureInfo.loadState &&
 591      TextureManager::LoadState::MASK_APPLIED != textureInfo.loadState &&
 592      TextureManager::LoadState::CANCELLED != textureInfo.loadState &&
 593      TextureManager::LoadState::MASK_CANCELLED != textureInfo.loadState)
 594   {
 595     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);
 596     textureInfo.loadState = TextureManager::LoadState::NOT_STARTED;
 597   }
 598
 599   if(!synchronousLoading)
 600   {
 601     // Check if we should add the observer.
 602     // Only do this if we have not loaded yet and it will not have loaded by the end of this method.
 603     switch(textureInfo.loadState)
 604     {
 605       case TextureManager::LoadState::LOAD_FAILED: // Failed notifies observer which then stops observing.
 606       case TextureManager::LoadState::NOT_STARTED:
 607       {
 608         LoadOrQueueTexture(textureInfo, observer); // If called inside NotifyObservers, queues until afterwards
 609         break;
 610       }
 611       case TextureManager::LoadState::LOADING:
 612       case TextureManager::LoadState::WAITING_FOR_MASK:
 613       case TextureManager::LoadState::MASK_APPLYING:
 614       case TextureManager::LoadState::MASK_APPLIED:
 615       {
 616         // Do not observe even we reload forced when texture is already loading state.
 617         if(TextureManager::ReloadPolicy::CACHED == reloadPolicy || TextureManager::INVALID_TEXTURE_ID == previousTextureId)
 618         {
 619           ObserveTexture(textureInfo, observer);
 620         }
 621         break;
 622       }
 623       case TextureManager::LoadState::UPLOADED:
 624       {
 625         if(observer)
 626         {
 627           LoadOrQueueTexture(textureInfo, observer);
 628         }
 629         break;
 630       }
 631       case TextureManager::LoadState::CANCELLED:
 632       {
 633         // A cancelled texture hasn't finished loading yet. Treat as a loading texture
 634         // (it's ref count has already been incremented, above)
 635         textureInfo.loadState = TextureManager::LoadState::LOADING;
 636         ObserveTexture(textureInfo, observer);
 637         break;
 638       }
 639       case TextureManager::LoadState::MASK_CANCELLED:
 640       {
 641         // A cancelled texture hasn't finished mask applying yet. Treat as a mask applying texture
 642         // (it's ref count has already been incremented, above)
 643         textureInfo.loadState = TextureManager::LoadState::MASK_APPLYING;
 644         ObserveTexture(textureInfo, observer);
 645         break;
 646       }
 647       case TextureManager::LoadState::LOAD_FINISHED:
 648       {
 649         // Loading has already completed.
 650         if(observer && textureInfo.storageType == TextureManager::StorageType::RETURN_PIXEL_BUFFER)
 651         {
 652           LoadOrQueueTexture(textureInfo, observer);
 653         }
 654         break;
 655       }
 656     }
 657   }
 658   else
 659   {
 660     // If the image is already finished to load, use cached texture.
 661     // We don't need to consider Observer because this is synchronous loading.
 662     if(!(textureInfo.loadState == TextureManager::LoadState::UPLOADED ||
 663          textureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED))
 664     {
 665       if(url.GetProtocolType() == VisualUrl::TEXTURE)
 666       {
 667         // Get external textureSet from cacheManager.
 668         std::string location = textureInfo.url.GetLocation();
 669         if(!location.empty())
 670         {
 671           TextureId id                  = std::stoi(location);
 672           auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
 673           textureInfo.textures.push_back(externalTextureInfo.textureSet.GetTexture(0));
 674           textureInfo.loadState = TextureManager::LoadState::UPLOADED;
 675         }
 676       }
 677       else
 678       {
 679         std::vector<Devel::PixelBuffer> pixelBuffers;
 680         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, loadYuvPlanes, pixelBuffers);
 681
 682         if(pixelBuffers.empty())
 683         {
 684           // If pixelBuffer loading is failed in synchronously, call RequestRemove() method.
 685           RequestRemove(textureId, nullptr);
 686           return INVALID_TEXTURE_ID;
 687         }
 688
 689         if(storageType == TextureManager::StorageType::KEEP_PIXEL_BUFFER) // For the mask image loading.
 690         {
 691           textureInfo.pixelBuffer = pixelBuffers[0]; // Store the pixel data
 692           textureInfo.loadState   = TextureManager::LoadState::LOAD_FINISHED;
 693         }
 694         else // For the image loading.
 695         {
 696           Texture maskTexture;
 697           if(maskTextureId != INVALID_TEXTURE_ID)
 698           {
 699             TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 700             if(maskCacheIndex != INVALID_CACHE_INDEX)
 701             {
 702               if(mTextureCacheManager[maskCacheIndex].storageType == TextureManager::StorageType::KEEP_PIXEL_BUFFER)
 703               {
 704                 Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
 705                 if(maskPixelBuffer)
 706                 {
 707                   pixelBuffers[0].ApplyMask(maskPixelBuffer, contentScale, cropToMask);
 708                 }
 709                 else
 710                 {
 711                   DALI_LOG_ERROR("Mask image cached invalid pixel buffer!\n");
 712                 }
 713               }
 714             }
 715             else
 716             {
 717               DALI_LOG_ERROR("Mask image is not stored in cache.\n");
 718             }
 719           }
 720           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 721
 722           // Upload texture
 723           UploadTextures(pixelBuffers, textureInfo);
 724         }
 725       }
 726     }
 727   }
 728
 729   return textureId;
 730 }
 731
 732 void TextureManager::RequestRemove(const TextureManager::TextureId textureId, TextureUploadObserver* observer)
 733 {
 734   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestRemove( textureId=%d observer=%p )\n", textureId, observer);
 735
 736   // Queue to remove.
 737   if(textureId != INVALID_TEXTURE_ID)
 738   {
 739     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 740     if(textureCacheIndex != INVALID_CACHE_INDEX)
 741     {
 742       if(observer)
 743       {
 744         // Remove observer from cached texture info
 745         TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
 746         RemoveTextureObserver(textureInfo, observer);
 747       }
 748
 749       mRemoveQueue.PushBack(textureId);
 750
 751       if(!mRemoveProcessorRegistered && Adaptor::IsAvailable())
 752       {
 753         mRemoveProcessorRegistered = true;
 754         Adaptor::Get().RegisterProcessor(*this, true);
 755       }
 756     }
 757   }
 758 }
 759
 760 void TextureManager::Remove(const TextureManager::TextureId textureId)
 761 {
 762   if(textureId != INVALID_TEXTURE_ID)
 763   {
 764     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 765     if(textureCacheIndex != INVALID_CACHE_INDEX)
 766     {
 767       TextureManager::TextureId maskTextureId = INVALID_TEXTURE_ID;
 768       TextureInfo&              textureInfo(mTextureCacheManager[textureCacheIndex]);
 769       // We only need to consider maskTextureId when texture's loadState is not cancelled. Because it is already deleted.
 770       if(textureInfo.loadState != TextureManager::LoadState::CANCELLED && textureInfo.loadState != TextureManager::LoadState::MASK_CANCELLED)
 771       {
 772         if(textureInfo.maskTextureId != INVALID_TEXTURE_ID)
 773         {
 774           maskTextureId = textureInfo.maskTextureId;
 775         }
 776       }
 777
 778       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));
 779
 780       // Remove textureId in CacheManager. Now, textureInfo is invalidate.
 781       mTextureCacheManager.RemoveCache(textureInfo);
 782
 783       // Remove maskTextureId in CacheManager
 784       if(maskTextureId != INVALID_TEXTURE_ID)
 785       {
 786         TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 787         if(maskCacheIndex != INVALID_CACHE_INDEX)
 788         {
 789           TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
 790
 791           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));
 792
 793           mTextureCacheManager.RemoveCache(maskTextureInfo);
 794         }
 795       }
 796     }
 797   }
 798 }
 799
 800 void TextureManager::ProcessRemoveQueue()
 801 {
 802   DALI_TRACE_BEGIN_WITH_MESSAGE_GENERATOR(gTraceFilter, "DALI_TEXTURE_MANAGER_PROCESS_REMOVE_QUEUE", [&](std::ostringstream& oss) {
 803     oss << "[" << mRemoveQueue.Count() << "]";
 804   });
 805
 806   // Note that RemoveQueue is not be changed during Remove().
 807   for(auto&& textureId : mRemoveQueue)
 808   {
 809     if(textureId != INVALID_TEXTURE_ID)
 810     {
 811       Remove(textureId);
 812     }
 813   }
 814
 815   mRemoveQueue.Clear();
 816
 817   DALI_TRACE_END(gTraceFilter, "DALI_TEXTURE_MANAGER_PROCESS_REMOVE_QUEUE");
 818 }
 819
 820 void TextureManager::Process(bool postProcessor)
 821 {
 822   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::Process()\n");
 823
 824   ProcessRemoveQueue();
 825
 826   if(Adaptor::IsAvailable())
 827   {
 828     Adaptor::Get().UnregisterProcessor(*this, true);
 829     mRemoveProcessorRegistered = false;
 830   }
 831 }
 832
 833 void TextureManager::LoadImageSynchronously(
 834   const VisualUrl&                 url,
 835   const Dali::ImageDimensions&     desiredSize,
 836   const Dali::FittingMode::Type    fittingMode,
 837   const Dali::SamplingMode::Type   samplingMode,
 838   const bool                       orientationCorrection,
 839   const bool                       loadYuvPlanes,
 840   std::vector<Devel::PixelBuffer>& pixelBuffers)
 841 {
 842   Devel::PixelBuffer pixelBuffer;
 843   if(url.IsBufferResource())
 844   {
 845     const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 846     if(encodedImageBuffer)
 847     {
 848       pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 849     }
 850   }
 851   else
 852   {
 853     if(loadYuvPlanes)
 854     {
 855       Dali::LoadImagePlanesFromFile(url.GetUrl(), pixelBuffers, desiredSize, fittingMode, samplingMode, orientationCorrection);
 856     }
 857     else
 858     {
 859       pixelBuffer = Dali::LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 860     }
 861   }
 862
 863   if(pixelBuffer)
 864   {
 865     pixelBuffers.push_back(pixelBuffer);
 866   }
 867 }
 868
 869 void TextureManager::LoadOrQueueTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 870 {
 871   switch(textureInfo.loadState)
 872   {
 873     case TextureManager::LoadState::NOT_STARTED:
 874     case TextureManager::LoadState::LOAD_FAILED:
 875     {
 876       if(mLoadingQueueTextureId != INVALID_TEXTURE_ID)
 877       {
 878         QueueLoadTexture(textureInfo, observer);
 879       }
 880       else
 881       {
 882         LoadTexture(textureInfo, observer);
 883       }
 884       break;
 885     }
 886     case TextureManager::LoadState::UPLOADED:
 887     {
 888       if(mLoadingQueueTextureId != INVALID_TEXTURE_ID)
 889       {
 890         QueueLoadTexture(textureInfo, observer);
 891       }
 892       else
 893       {
 894         // The Texture has already loaded. The other observers have already been notified.
 895         // We need to send a "late" loaded notification for this observer.
 896         if(observer)
 897         {
 898           EmitLoadComplete(observer, textureInfo, true);
 899         }
 900       }
 901       break;
 902     }
 903     case TextureManager::LoadState::LOADING:
 904     case TextureManager::LoadState::CANCELLED:
 905     case TextureManager::LoadState::MASK_CANCELLED:
 906     case TextureManager::LoadState::LOAD_FINISHED:
 907     case TextureManager::LoadState::WAITING_FOR_MASK:
 908     case TextureManager::LoadState::MASK_APPLYING:
 909     case TextureManager::LoadState::MASK_APPLIED:
 910     {
 911       break;
 912     }
 913   }
 914 }
 915
 916 void TextureManager::QueueLoadTexture(const TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 917 {
 918   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "Add observer to observer queue (textureId:%d, observer:%p)\n", textureInfo.textureId, observer);
 919
 920   const auto& textureId = textureInfo.textureId;
 921   mLoadQueue.PushBack(QueueElement(textureId, observer));
 922
 923   if(observer)
 924   {
 925     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Connect DestructionSignal to observer:%p\n", observer);
 926     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 927   }
 928 }
 929
 930 void TextureManager::LoadTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 931 {
 932   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::LoadTexture(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
 933   textureInfo.loadState = TextureManager::LoadState::LOADING;
 934   if(!textureInfo.loadSynchronously)
 935   {
 936     auto premultiplyOnLoad = (textureInfo.preMultiplyOnLoad && textureInfo.maskTextureId == INVALID_TEXTURE_ID) ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
 937     if(textureInfo.animatedImageLoading)
 938     {
 939       mAsyncLoader->LoadAnimatedImage(textureInfo.textureId, textureInfo.animatedImageLoading, textureInfo.frameIndex, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, premultiplyOnLoad);
 940     }
 941     else
 942     {
 943       mAsyncLoader->Load(textureInfo.textureId, textureInfo.url, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, textureInfo.orientationCorrection, premultiplyOnLoad, textureInfo.loadYuvPlanes);
 944     }
 945   }
 946   ObserveTexture(textureInfo, observer);
 947 }
 948
 949 void TextureManager::ProcessLoadQueue()
 950 {
 951   for(auto&& element : mLoadQueue)
 952   {
 953     if(element.mTextureId == INVALID_TEXTURE_ID)
 954     {
 955       continue;
 956     }
 957
 958     TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(element.mTextureId);
 959     if(cacheIndex != INVALID_CACHE_INDEX)
 960     {
 961       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 962
 963       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));
 964
 965       if((textureInfo.loadState == TextureManager::LoadState::UPLOADED) ||
 966          (textureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED &&
 967           textureInfo.storageType == TextureManager::StorageType::RETURN_PIXEL_BUFFER))
 968       {
 969         if(element.mObserver)
 970         {
 971           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", element.mObserver);
 972           element.mObserver->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
 973
 974           EmitLoadComplete(element.mObserver, textureInfo, true);
 975         }
 976       }
 977       else if(textureInfo.loadState == TextureManager::LoadState::LOADING)
 978       {
 979         // Note : LOADING state texture cannot be queue.
 980         // This case be occured when same texture id are queue in mLoadQueue.
 981         ObserveTexture(textureInfo, element.mObserver);
 982       }
 983       else
 984       {
 985         LoadTexture(textureInfo, element.mObserver);
 986       }
 987     }
 988   }
 989
 990   mLoadQueue.Clear();
 991 }
 992
 993 void TextureManager::ObserveTexture(TextureManager::TextureInfo& textureInfo,
 994                                     TextureUploadObserver*       observer)
 995 {
 996   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ObserveTexture(): url:%s observer:%p\n", textureInfo.url.GetUrl().c_str(), observer);
 997
 998   if(observer)
 999   {
1000     textureInfo.observerList.PushBack(observer);
1001
1002     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Connect DestructionSignal to observer:%p\n", observer);
1003     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
1004   }
1005 }
1006
1007 void TextureManager::AsyncLoadComplete(const TextureManager::TextureId textureId, std::vector<Devel::PixelBuffer>& pixelBuffers)
1008 {
1009   TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1010   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::AsyncLoadComplete( textureId:%d CacheIndex:%d )\n", textureId, cacheIndex.GetIndex());
1011   if(cacheIndex != INVALID_CACHE_INDEX)
1012   {
1013     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1014
1015     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));
1016     if(textureInfo.loadState != TextureManager::LoadState::CANCELLED && textureInfo.loadState != TextureManager::LoadState::MASK_CANCELLED)
1017     {
1018       // textureInfo can be invalidated after this call (as the mTextureInfoContainer may be modified)
1019       PostLoad(textureInfo, pixelBuffers);
1020     }
1021     else
1022     {
1023       Remove(textureInfo.textureId);
1024     }
1025   }
1026 }
1027
1028 void TextureManager::PostLoad(TextureManager::TextureInfo& textureInfo, std::vector<Devel::PixelBuffer>& pixelBuffers)
1029 {
1030   if(!pixelBuffers.empty()) ///< Load success
1031   {
1032     if(pixelBuffers.size() == 1)
1033     {
1034       Devel::PixelBuffer pixelBuffer = pixelBuffers[0];
1035       if(pixelBuffer && (pixelBuffer.GetWidth() != 0) && (pixelBuffer.GetHeight() != 0))
1036       {
1037         textureInfo.preMultiplied = pixelBuffer.IsAlphaPreMultiplied();
1038
1039         if(textureInfo.storageType == TextureManager::StorageType::UPLOAD_TO_TEXTURE)
1040         {
1041           // If there is a mask texture ID associated with this texture, then apply the mask
1042           // if it's already loaded. If it hasn't, and the mask is still loading,
1043           // wait for the mask to finish loading.
1044           // note, If the texture is already uploaded synchronously during loading,
1045           // we don't need to apply mask.
1046           if(textureInfo.loadState != TextureManager::LoadState::UPLOADED &&
1047              textureInfo.maskTextureId != INVALID_TEXTURE_ID)
1048           {
1049             if(textureInfo.loadState == TextureManager::LoadState::MASK_APPLYING)
1050             {
1051               textureInfo.loadState = TextureManager::LoadState::MASK_APPLIED;
1052               UploadTextures(pixelBuffers, textureInfo);
1053               NotifyObservers(textureInfo, true);
1054             }
1055             else
1056             {
1057               LoadState maskLoadState = mTextureCacheManager.GetTextureStateInternal(textureInfo.maskTextureId);
1058               textureInfo.pixelBuffer = pixelBuffer; // Store the pixel buffer temporarily
1059               if(maskLoadState == TextureManager::LoadState::LOADING)
1060               {
1061                 textureInfo.loadState = TextureManager::LoadState::WAITING_FOR_MASK;
1062               }
1063               else if(maskLoadState == TextureManager::LoadState::LOAD_FINISHED || maskLoadState == TextureManager::LoadState::UPLOADED)
1064               {
1065                 TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1066                 if(maskCacheIndex != INVALID_CACHE_INDEX)
1067                 {
1068                   TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1069                   if(maskTextureInfo.storageType == TextureManager::StorageType::KEEP_PIXEL_BUFFER)
1070                   {
1071                     ApplyMask(textureInfo, textureInfo.maskTextureId);
1072                   }
1073                   else if(maskTextureInfo.storageType == TextureManager::StorageType::KEEP_TEXTURE)
1074                   {
1075                     // Upload image texture. textureInfo.loadState will be UPLOADED.
1076                     UploadTextures(pixelBuffers, textureInfo);
1077
1078                     // notify mask texture set.
1079                     NotifyObservers(textureInfo, true);
1080                   }
1081                 }
1082               }
1083               else // maskLoadState == TextureManager::LoadState::LOAD_FAILED
1084               {
1085                 // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1086                 DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1087                 UploadTextures(pixelBuffers, textureInfo);
1088                 NotifyObservers(textureInfo, true);
1089               }
1090             }
1091           }
1092           else
1093           {
1094             UploadTextures(pixelBuffers, textureInfo);
1095             NotifyObservers(textureInfo, true);
1096           }
1097         }
1098         else
1099         {
1100           textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
1101           textureInfo.loadState   = TextureManager::LoadState::LOAD_FINISHED;
1102
1103           if(textureInfo.storageType == TextureManager::StorageType::RETURN_PIXEL_BUFFER)
1104           {
1105             NotifyObservers(textureInfo, true);
1106           }
1107           else // for the TextureManager::StorageType::KEEP_PIXEL_BUFFER and TextureManager::StorageType::KEEP_TEXTURE
1108           {
1109             // Check if there was another texture waiting for this load to complete
1110             // (e.g. if this was an image mask, and its load is on a different thread)
1111             CheckForWaitingTexture(textureInfo);
1112           }
1113         }
1114       }
1115     }
1116     else
1117     {
1118       // YUV case
1119       textureInfo.preMultiplied = false;
1120
1121       UploadTextures(pixelBuffers, textureInfo);
1122       NotifyObservers(textureInfo, true);
1123     }
1124   }
1125   else ///< Load fail
1126   {
1127     textureInfo.loadState = TextureManager::LoadState::LOAD_FAILED;
1128     if(textureInfo.storageType == TextureManager::StorageType::KEEP_PIXEL_BUFFER || textureInfo.storageType == TextureManager::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     else
1135     {
1136       NotifyObservers(textureInfo, false);
1137     }
1138   }
1139 }
1140
1141 void TextureManager::CheckForWaitingTexture(TextureManager::TextureInfo& maskTextureInfo)
1142 {
1143   if(maskTextureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED &&
1144      maskTextureInfo.storageType == TextureManager::StorageType::KEEP_TEXTURE)
1145   {
1146     // Upload mask texture. textureInfo.loadState will be UPLOADED.
1147     std::vector<Devel::PixelBuffer> pixelBuffers;
1148     pixelBuffers.push_back(maskTextureInfo.pixelBuffer);
1149     UploadTextures(pixelBuffers, maskTextureInfo);
1150   }
1151
1152   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): maskTextureId=%d, maskTextureUrl=%s\n", maskTextureInfo.textureId, maskTextureInfo.url.GetUrl().c_str());
1153
1154   // Search the cache, checking if any texture has this texture id as a maskTextureId
1155   const size_t size = mTextureCacheManager.size();
1156
1157   // Keep notify observer required textureIds.
1158   // Note : NotifyObservers can change mTextureCacheManager cache struct. We should check id's validation before notify.
1159   std::vector<TextureId> notifyRequiredTextureIds;
1160
1161   // TODO : Refactorize here to not iterate whole cached image.
1162   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1163   {
1164     if(mTextureCacheManager[cacheIndex].maskTextureId == maskTextureInfo.textureId &&
1165        mTextureCacheManager[cacheIndex].loadState == TextureManager::LoadState::WAITING_FOR_MASK)
1166     {
1167       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1168
1169       if(maskTextureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED)
1170       {
1171         if(maskTextureInfo.storageType == TextureManager::StorageType::KEEP_PIXEL_BUFFER)
1172         {
1173           ApplyMask(textureInfo, maskTextureInfo.textureId);
1174         }
1175       }
1176       else if(maskTextureInfo.loadState == TextureManager::LoadState::UPLOADED)
1177       {
1178         if(maskTextureInfo.storageType == TextureManager::StorageType::KEEP_TEXTURE)
1179         {
1180           if(textureInfo.url.GetProtocolType() == VisualUrl::TEXTURE)
1181           {
1182             // Get external textureSet from cacheManager.
1183             std::string location = textureInfo.url.GetLocation();
1184             if(!location.empty())
1185             {
1186               TextureId id                  = std::stoi(location);
1187               auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
1188               textureInfo.textures.push_back(externalTextureInfo.textureSet.GetTexture(0));
1189               textureInfo.loadState = TextureManager::LoadState::UPLOADED;
1190             }
1191           }
1192           else
1193           {
1194             // Upload image texture. textureInfo.loadState will be UPLOADED.
1195             std::vector<Devel::PixelBuffer> pixelBuffers;
1196             pixelBuffers.push_back(textureInfo.pixelBuffer);
1197             UploadTextures(pixelBuffers, textureInfo);
1198           }
1199
1200           // Increase reference counts for notify required textureId.
1201           // Now we can assume that we don't remove & re-assign this textureId
1202           // during NotifyObserver signal emit.
1203           maskTextureInfo.referenceCount++;
1204           textureInfo.referenceCount++;
1205
1206           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): Ready to notify textureId=%d\n", textureInfo.textureId);
1207
1208           notifyRequiredTextureIds.push_back(textureInfo.textureId);
1209         }
1210       }
1211       else // maskTextureInfo.loadState == TextureManager::LoadState::LOAD_FAILED
1212       {
1213         // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1214         DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1215         std::vector<Devel::PixelBuffer> pixelBuffers;
1216         pixelBuffers.push_back(textureInfo.pixelBuffer);
1217         UploadTextures(pixelBuffers, textureInfo);
1218
1219         // Increase reference counts for notify required textureId.
1220         // Now we can assume that we don't remove & re-assign this textureId
1221         // during NotifyObserver signal emit.
1222         maskTextureInfo.referenceCount++;
1223         textureInfo.referenceCount++;
1224
1225         DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): Ready to notify textureId=%d\n", textureInfo.textureId);
1226
1227         notifyRequiredTextureIds.push_back(textureInfo.textureId);
1228       }
1229     }
1230   }
1231
1232   // Notify textures are masked
1233   for(const auto textureId : notifyRequiredTextureIds)
1234   {
1235     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1236     if(textureCacheIndex != INVALID_CACHE_INDEX)
1237     {
1238       TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
1239       NotifyObservers(textureInfo, true);
1240     }
1241   }
1242
1243   // Decrease reference count
1244   for(const auto textureId : notifyRequiredTextureIds)
1245   {
1246     RequestRemove(textureId, nullptr);
1247   }
1248 }
1249
1250 void TextureManager::ApplyMask(TextureManager::TextureInfo& textureInfo, const TextureManager::TextureId maskTextureId)
1251 {
1252   TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
1253   if(maskCacheIndex != INVALID_CACHE_INDEX)
1254   {
1255     Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
1256     Devel::PixelBuffer pixelBuffer     = textureInfo.pixelBuffer;
1257     textureInfo.pixelBuffer.Reset();
1258
1259     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ApplyMask(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
1260
1261     textureInfo.loadState  = TextureManager::LoadState::MASK_APPLYING;
1262     auto premultiplyOnLoad = textureInfo.preMultiplyOnLoad ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
1263     mAsyncLoader->ApplyMask(textureInfo.textureId, pixelBuffer, maskPixelBuffer, textureInfo.scaleFactor, textureInfo.cropToMask, premultiplyOnLoad);
1264   }
1265 }
1266
1267 void TextureManager::UploadTextures(std::vector<Devel::PixelBuffer>& pixelBuffers, TextureManager::TextureInfo& textureInfo)
1268 {
1269   if(!pixelBuffers.empty() && textureInfo.loadState != TextureManager::LoadState::UPLOADED)
1270   {
1271     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "  TextureManager::UploadTextures() New Texture for textureId:%d\n", textureInfo.textureId);
1272
1273     // Check if this pixelBuffer is premultiplied
1274     textureInfo.preMultiplied = pixelBuffers[0].IsAlphaPreMultiplied();
1275
1276     auto& renderingAddOn = RenderingAddOn::Get();
1277     if(renderingAddOn.IsValid())
1278     {
1279       renderingAddOn.CreateGeometry(textureInfo.textureId, pixelBuffers[0]);
1280     }
1281
1282     // Remove previous textures and insert new textures
1283     textureInfo.textures.clear();
1284
1285     for(auto&& pixelBuffer : pixelBuffers)
1286     {
1287       Texture   texture   = Texture::New(Dali::TextureType::TEXTURE_2D, pixelBuffer.GetPixelFormat(), pixelBuffer.GetWidth(), pixelBuffer.GetHeight());
1288       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer);
1289       texture.Upload(pixelData);
1290       textureInfo.textures.push_back(texture);
1291     }
1292   }
1293
1294   // Update the load state.
1295   // Note: This is regardless of success as we care about whether a
1296   // load attempt is in progress or not.  If unsuccessful, a broken
1297   // image is still loaded.
1298   textureInfo.loadState = TextureManager::LoadState::UPLOADED;
1299 }
1300
1301 void TextureManager::NotifyObservers(TextureManager::TextureInfo& textureInfo, const bool success)
1302 {
1303   TextureId textureId = textureInfo.textureId;
1304
1305   // If there is an observer: Notify the load is complete, whether successful or not,
1306   // and erase it from the list
1307   TextureInfo* info = &textureInfo;
1308
1309   if(info->animatedImageLoading)
1310   {
1311     // If loading failed, we don't need to get frameCount and frameInterval.
1312     if(success)
1313     {
1314       info->frameCount    = info->animatedImageLoading.GetImageCount();
1315       info->frameInterval = info->animatedImageLoading.GetFrameInterval(info->frameIndex);
1316     }
1317     info->animatedImageLoading.Reset();
1318   }
1319
1320   mLoadingQueueTextureId = textureId;
1321
1322   // Reverse observer list that we can pop_back the observer.
1323   std::reverse(info->observerList.Begin(), info->observerList.End());
1324
1325   while(info->observerList.Count())
1326   {
1327     TextureUploadObserver* observer = *(info->observerList.End() - 1u);
1328
1329     // During LoadComplete() a Control ResourceReady() signal is emitted.
1330     // During that signal the app may add remove /add Textures (e.g. via
1331     // ImageViews).
1332     // It is possible for observers to be removed from the observer list,
1333     // and it is also possible for the mTextureInfoContainer to be modified,
1334     // invalidating the reference to the textureInfo struct.
1335     // Texture load requests for the same URL are deferred until the end of this
1336     // method.
1337     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));
1338     // It is possible for the observer to be deleted.
1339     // Disconnect and remove the observer first.
1340     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1341     observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1342
1343     info->observerList.Erase(info->observerList.End() - 1u);
1344
1345     EmitLoadComplete(observer, *info, success);
1346
1347     // Get the textureInfo from the container again as it may have been invalidated.
1348     TextureCacheIndex textureInfoIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1349     if(textureInfoIndex == INVALID_CACHE_INDEX)
1350     {
1351       break; // texture has been removed - can stop.
1352     }
1353     info = &mTextureCacheManager[textureInfoIndex];
1354   }
1355
1356   mLoadingQueueTextureId = INVALID_TEXTURE_ID;
1357   ProcessLoadQueue();
1358
1359   if(info->storageType == TextureManager::StorageType::RETURN_PIXEL_BUFFER && info->observerList.Count() == 0)
1360   {
1361     RequestRemove(info->textureId, nullptr);
1362   }
1363 }
1364
1365 void TextureManager::ObserverDestroyed(TextureUploadObserver* observer)
1366 {
1367   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "TextureManager::ObserverDestroyed() observer:%p\n", observer);
1368
1369   const std::size_t size = mTextureCacheManager.size();
1370   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1371   {
1372     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1373     for(TextureInfo::ObserverListType::Iterator j = textureInfo.observerList.Begin();
1374         j != textureInfo.observerList.End();)
1375     {
1376       if(*j == observer)
1377       {
1378         j = textureInfo.observerList.Erase(j);
1379       }
1380       else
1381       {
1382         ++j;
1383       }
1384     }
1385   }
1386
1387   // Remove element from the LoadQueue
1388   for(auto&& element : mLoadQueue)
1389   {
1390     if(element.mObserver == observer)
1391     {
1392       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "Remove observer from observer queue (textureId:%d, observer:%p)\n", element.mTextureId, element.mObserver);
1393       element.mTextureId = INVALID_TEXTURE_ID;
1394       element.mObserver  = nullptr;
1395     }
1396   }
1397 }
1398
1399 Dali::Geometry TextureManager::GetRenderGeometry(const TextureManager::TextureId textureId, uint32_t& frontElements, uint32_t& backElements)
1400 {
1401   return RenderingAddOn::Get().IsValid() ? RenderingAddOn::Get().GetGeometry(textureId, frontElements, backElements) : Geometry();
1402 }
1403
1404 void TextureManager::EmitLoadComplete(TextureUploadObserver* observer, TextureManager::TextureInfo& textureInfo, const bool success)
1405 {
1406   if(textureInfo.storageType == TextureManager::StorageType::RETURN_PIXEL_BUFFER)
1407   {
1408     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::PIXEL_BUFFER, textureInfo.pixelBuffer, textureInfo.url.GetUrl(), textureInfo.preMultiplied));
1409   }
1410   else
1411   {
1412     TextureSet textureSet = GetTextureSet(textureInfo);
1413     if(textureInfo.isAnimatedImageFormat)
1414     {
1415       observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::ANIMATED_IMAGE_TEXTURE, textureInfo.textureId, textureSet, textureInfo.frameCount, textureInfo.frameInterval, textureInfo.preMultiplied));
1416     }
1417     else
1418     {
1419       observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::TEXTURE, textureInfo.textureId, textureSet, textureInfo.preMultiplied));
1420     }
1421   }
1422 }
1423
1424 TextureSet TextureManager::GetTextureSet(const TextureManager::TextureId textureId)
1425 {
1426   TextureSet                textureSet;
1427   TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
1428   if(loadState == TextureManager::LoadState::UPLOADED)
1429   {
1430     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1431     if(textureCacheIndex != INVALID_CACHE_INDEX)
1432     {
1433       TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
1434       textureSet = GetTextureSet(textureInfo);
1435     }
1436   }
1437   else
1438   {
1439     DALI_LOG_ERROR("GetTextureSet is failed. texture is not uploaded \n");
1440   }
1441   return textureSet;
1442 }
1443
1444 TextureSet TextureManager::GetTextureSet(const TextureManager::TextureInfo& textureInfo)
1445 {
1446   TextureSet textureSet;
1447
1448   // Always create new TextureSet here, so we don't share same TextureSets for multiple visuals.
1449   textureSet = TextureSet::New();
1450
1451   if(!textureInfo.textures.empty())
1452   {
1453     if(textureInfo.textures.size() > 1) // For YUV case
1454     {
1455       uint32_t index = 0u;
1456       for(auto&& texture : textureInfo.textures)
1457       {
1458         textureSet.SetTexture(index++, texture);
1459       }
1460     }
1461     else
1462     {
1463       textureSet.SetTexture(TEXTURE_INDEX, textureInfo.textures[0]);
1464       TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1465       if(maskCacheIndex != INVALID_CACHE_INDEX)
1466       {
1467         TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1468         if(maskTextureInfo.storageType == TextureManager::StorageType::UPLOAD_TO_TEXTURE || maskTextureInfo.storageType == TextureManager::StorageType::KEEP_TEXTURE)
1469         {
1470           if(!maskTextureInfo.textures.empty())
1471           {
1472             textureSet.SetTexture(MASK_TEXTURE_INDEX, maskTextureInfo.textures[0]);
1473           }
1474         }
1475       }
1476     }
1477   }
1478   return textureSet;
1479 }
1480
1481 void TextureManager::RemoveTextureObserver(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
1482 {
1483   if(observer)
1484   {
1485     const auto iterEnd = textureInfo.observerList.End();
1486     const auto iter    = std::find(textureInfo.observerList.Begin(), iterEnd, observer);
1487     if(iter != iterEnd)
1488     {
1489       // Disconnect and remove the observer.
1490       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1491       observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1492       textureInfo.observerList.Erase(iter);
1493     }
1494     else
1495     {
1496       // Given textureId might exist at load queue.
1497       // Remove observer from the LoadQueue
1498       for(auto&& element : mLoadQueue)
1499       {
1500         if(element.mTextureId == textureInfo.textureId && element.mObserver == observer)
1501         {
1502           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "Remove observer from observer queue (textureId:%d, observer:%p)\n", element.mTextureId, element.mObserver);
1503           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1504           observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1505           element.mObserver = nullptr;
1506           break;
1507         }
1508       }
1509     }
1510   }
1511 }
1512
1513 } // namespace Internal
1514
1515 } // namespace Toolkit
1516
1517 } // namespace Dali