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

   1 /*
   2  * Copyright (c) 2023 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali-toolkit/internal/texture-manager/texture-manager-impl.h>
  20
  21 // EXTERNAL HEADERS
  22 #include <dali/devel-api/adaptor-framework/image-loading.h>
  23 #include <dali/devel-api/adaptor-framework/pixel-buffer.h>
  24 #include <dali/integration-api/adaptor-framework/adaptor.h>
  25 #include <dali/integration-api/debug.h>
  26 #include <dali/public-api/rendering/geometry.h>
  27
  28 // INTERNAL HEADERS
  29 #include <dali-toolkit/internal/texture-manager/texture-async-loading-helper.h>
  30 #include <dali-toolkit/internal/texture-manager/texture-cache-manager.h>
  31 #include <dali-toolkit/internal/visuals/image-atlas-manager.h>
  32 #include <dali-toolkit/internal/visuals/rendering-addon.h>
  33
  34 namespace
  35 {
  36 constexpr auto INITIAL_HASH_NUMBER = size_t{0u};
  37
  38 constexpr auto TEXTURE_INDEX      = 0u; ///< The Index for texture
  39 constexpr auto MASK_TEXTURE_INDEX = 1u; ///< The Index for mask texture
  40 } // namespace
  41
  42 namespace Dali
  43 {
  44 namespace Toolkit
  45 {
  46 namespace Internal
  47 {
  48 #ifdef DEBUG_ENABLED
  49 // Define logfilter Internal namespace level so other files (e.g. texture-cache-manager.cpp) can also use this filter.
  50 Debug::Filter* gTextureManagerLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_TEXTURE_MANAGER");
  51
  52 // clang-format off
  53 #define GET_LOAD_STATE_STRING(loadState) \
  54   loadState == TextureManagerType::LoadState::NOT_STARTED      ? "NOT_STARTED"      : \
  55   loadState == TextureManagerType::LoadState::LOADING          ? "LOADING"          : \
  56   loadState == TextureManagerType::LoadState::LOAD_FINISHED    ? "LOAD_FINISHED"    : \
  57   loadState == TextureManagerType::LoadState::WAITING_FOR_MASK ? "WAITING_FOR_MASK" : \
  58   loadState == TextureManagerType::LoadState::MASK_APPLYING    ? "MASK_APPLYING"    : \
  59   loadState == TextureManagerType::LoadState::MASK_APPLIED     ? "MASK_APPLIED"     : \
  60   loadState == TextureManagerType::LoadState::UPLOADED         ? "UPLOADED"         : \
  61   loadState == TextureManagerType::LoadState::CANCELLED        ? "CANCELLED"        : \
  62   loadState == TextureManagerType::LoadState::MASK_CANCELLED   ? "MASK_CANCELLED"   : \
  63   loadState == TextureManagerType::LoadState::LOAD_FAILED      ? "LOAD_FAILED"      : \
  64                                                                  "Unknown"
  65 // clang-format on
  66 #endif
  67
  68 namespace
  69 {
  70 const uint32_t DEFAULT_ATLAS_SIZE(1024u);               ///< This size can fit 8 by 8 images of average size 128 * 128
  71 const Vector4  FULL_ATLAS_RECT(0.0f, 0.0f, 1.0f, 1.0f); ///< UV Rectangle that covers the full Texture
  72
  73 void PreMultiply(Devel::PixelBuffer pixelBuffer, TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
  74 {
  75   if(Pixel::HasAlpha(pixelBuffer.GetPixelFormat()))
  76   {
  77     if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
  78     {
  79       pixelBuffer.MultiplyColorByAlpha();
  80     }
  81   }
  82   else
  83   {
  84     preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
  85   }
  86 }
  87
  88 } // Anonymous namespace
  89
  90 TextureManager::MaskingData::MaskingData()
  91 : mAlphaMaskUrl(),
  92   mAlphaMaskId(INVALID_TEXTURE_ID),
  93   mContentScaleFactor(1.0f),
  94   mCropToMask(true),
  95   mPreappliedMasking(true),
  96   mMaskImageLoadingFailed(false)
  97 {
  98 }
  99
 100 TextureManager::TextureManager(bool loadYuvPlanes)
 101 : mTextureCacheManager(),
 102   mAsyncLoader(std::unique_ptr<TextureAsyncLoadingHelper>(new TextureAsyncLoadingHelper(*this))),
 103   mLifecycleObservers(),
 104   mLoadQueue(),
 105   mLoadingQueueTextureId(INVALID_TEXTURE_ID),
 106   mRemoveQueue(),
 107   mLoadYuvPlanes(loadYuvPlanes),
 108   mRemoveProcessorRegistered(false)
 109 {
 110   // Initialize the AddOn
 111   RenderingAddOn::Get();
 112 }
 113
 114 TextureManager::~TextureManager()
 115 {
 116   if(mRemoveProcessorRegistered && Adaptor::IsAvailable())
 117   {
 118     Adaptor::Get().UnregisterProcessor(*this, true);
 119     mRemoveProcessorRegistered = false;
 120   }
 121
 122   for(auto iter = mLifecycleObservers.Begin(), endIter = mLifecycleObservers.End(); iter != endIter; ++iter)
 123   {
 124     (*iter)->TextureManagerDestroyed();
 125   }
 126 }
 127
 128 TextureSet TextureManager::LoadAnimatedImageTexture(
 129   const VisualUrl&                url,
 130   Dali::AnimatedImageLoading      animatedImageLoading,
 131   const uint32_t&                 frameIndex,
 132   TextureManager::TextureId&      textureId,
 133   MaskingDataPointer&             maskInfo,
 134   const Dali::ImageDimensions&    desiredSize,
 135   const Dali::FittingMode::Type&  fittingMode,
 136   const Dali::SamplingMode::Type& samplingMode,
 137   const bool&                     synchronousLoading,
 138   TextureUploadObserver*          textureObserver,
 139   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 140 {
 141   TextureSet textureSet;
 142
 143   if(synchronousLoading)
 144   {
 145     Devel::PixelBuffer pixelBuffer;
 146     if(animatedImageLoading)
 147     {
 148       pixelBuffer = animatedImageLoading.LoadFrame(frameIndex, desiredSize, fittingMode, samplingMode);
 149     }
 150     if(!pixelBuffer)
 151     {
 152       DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous loading is failed\n");
 153     }
 154     else
 155     {
 156       Texture maskTexture;
 157       if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 158       {
 159         Devel::PixelBuffer maskPixelBuffer = LoadImageFromFile(maskInfo->mAlphaMaskUrl.GetUrl(), desiredSize, fittingMode, samplingMode, true);
 160         if(maskPixelBuffer)
 161         {
 162           if(!maskInfo->mPreappliedMasking)
 163           {
 164             PixelData maskPixelData = Devel::PixelBuffer::Convert(maskPixelBuffer); // takes ownership of buffer
 165             maskTexture             = Texture::New(Dali::TextureType::TEXTURE_2D, maskPixelData.GetPixelFormat(), maskPixelData.GetWidth(), maskPixelData.GetHeight());
 166             maskTexture.Upload(maskPixelData);
 167           }
 168           else
 169           {
 170             pixelBuffer.ApplyMask(maskPixelBuffer, maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 171           }
 172         }
 173         else
 174         {
 175           DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous mask image loading is failed\n");
 176         }
 177       }
 178
 179       if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 180       {
 181         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 182       }
 183
 184       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer); // takes ownership of buffer
 185       if(!textureSet)
 186       {
 187         Texture texture = Texture::New(Dali::TextureType::TEXTURE_2D, pixelData.GetPixelFormat(), pixelData.GetWidth(), pixelData.GetHeight());
 188         texture.Upload(pixelData);
 189         textureSet = TextureSet::New();
 190         textureSet.SetTexture(TEXTURE_INDEX, texture);
 191         if(maskTexture)
 192         {
 193           textureSet.SetTexture(MASK_TEXTURE_INDEX, maskTexture);
 194         }
 195       }
 196     }
 197   }
 198   else
 199   {
 200     TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 201     float     contentScaleFactor = 1.0f;
 202     bool      cropToMask         = false;
 203     if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 204     {
 205       maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? StorageType::KEEP_PIXEL_BUFFER : StorageType::KEEP_TEXTURE);
 206       alphaMaskId            = maskInfo->mAlphaMaskId;
 207       if(maskInfo->mPreappliedMasking)
 208       {
 209         contentScaleFactor = maskInfo->mContentScaleFactor;
 210         cropToMask         = maskInfo->mCropToMask;
 211       }
 212     }
 213
 214     textureId = RequestLoadInternal(url, alphaMaskId, textureId, contentScaleFactor, desiredSize, fittingMode, samplingMode, UseAtlas::NO_ATLAS, cropToMask, StorageType::UPLOAD_TO_TEXTURE, textureObserver, true, TextureManager::ReloadPolicy::CACHED, preMultiplyOnLoad, animatedImageLoading, frameIndex, false);
 215
 216     TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 217     if(loadState == TextureManager::LoadState::UPLOADED)
 218     {
 219       // LoadComplete has already been called - keep the same texture set
 220       textureSet = GetTextureSet(textureId);
 221     }
 222   }
 223
 224   return textureSet;
 225 }
 226
 227 Devel::PixelBuffer TextureManager::LoadPixelBuffer(
 228   const VisualUrl&                url,
 229   const Dali::ImageDimensions&    desiredSize,
 230   const Dali::FittingMode::Type&  fittingMode,
 231   const Dali::SamplingMode::Type& samplingMode,
 232   const bool&                     synchronousLoading,
 233   TextureUploadObserver*          textureObserver,
 234   const bool&                     orientationCorrection,
 235   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 236 {
 237   Devel::PixelBuffer pixelBuffer;
 238   if(synchronousLoading)
 239   {
 240     if(url.IsValid())
 241     {
 242       if(url.IsBufferResource())
 243       {
 244         const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 245         if(encodedImageBuffer)
 246         {
 247           pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 248         }
 249       }
 250       else
 251       {
 252         pixelBuffer = LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 253       }
 254       if(pixelBuffer && preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 255       {
 256         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 257       }
 258     }
 259   }
 260   else
 261   {
 262     RequestLoadInternal(url, INVALID_TEXTURE_ID, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, UseAtlas::NO_ATLAS, false, StorageType::RETURN_PIXEL_BUFFER, textureObserver, orientationCorrection, TextureManager::ReloadPolicy::FORCED, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, false);
 263   }
 264
 265   return pixelBuffer;
 266 }
 267
 268 TextureSet TextureManager::LoadTexture(
 269   const VisualUrl&                    url,
 270   const Dali::ImageDimensions&        desiredSize,
 271   const Dali::FittingMode::Type&      fittingMode,
 272   const Dali::SamplingMode::Type&     samplingMode,
 273   MaskingDataPointer&                 maskInfo,
 274   const bool&                         synchronousLoading,
 275   TextureManager::TextureId&          textureId,
 276   Vector4&                            textureRect,
 277   Dali::ImageDimensions&              textureRectSize,
 278   bool&                               atlasingStatus,
 279   bool&                               loadingStatus,
 280   TextureUploadObserver*              textureObserver,
 281   AtlasUploadObserver*                atlasObserver,
 282   ImageAtlasManagerPtr                imageAtlasManager,
 283   const bool&                         orientationCorrection,
 284   const TextureManager::ReloadPolicy& reloadPolicy,
 285   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad)
 286 {
 287   TextureSet textureSet;
 288
 289   loadingStatus = false;
 290   textureRect   = FULL_ATLAS_RECT;
 291
 292   if(VisualUrl::TEXTURE == url.GetProtocolType())
 293   {
 294     std::string location = url.GetLocation();
 295     if(location.size() > 0u)
 296     {
 297       TextureId id                  = std::stoi(location);
 298       auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
 299       if(externalTextureInfo.textureSet)
 300       {
 301         if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 302         {
 303           // Change preMultiplyOnLoad value so make caller determine to preMultiplyAlpha or not.
 304           // TODO : Should we seperate input and output value?
 305           preMultiplyOnLoad = externalTextureInfo.preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 306         }
 307
 308         TextureId alphaMaskId = INVALID_TEXTURE_ID;
 309         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 310         {
 311           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, StorageType::KEEP_TEXTURE, synchronousLoading);
 312           alphaMaskId            = maskInfo->mAlphaMaskId;
 313
 314           // Create new textureId. this textureId is not same as location
 315           textureId = RequestLoad(url, alphaMaskId, textureId, 1.0f, desiredSize, fittingMode, samplingMode, UseAtlas::NO_ATLAS, false, textureObserver, orientationCorrection, reloadPolicy, preMultiplyOnLoad, synchronousLoading);
 316
 317           TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 318           if(loadState == TextureManager::LoadState::UPLOADED)
 319           {
 320             textureSet = GetTextureSet(textureId);
 321           }
 322         }
 323         else
 324         {
 325           // TextureId is same as location
 326           textureId = id;
 327
 328           textureSet = TextureSet::New();
 329           textureSet.SetTexture(TEXTURE_INDEX, externalTextureInfo.textureSet.GetTexture(TEXTURE_INDEX));
 330         }
 331       }
 332     }
 333   }
 334   else
 335   {
 336     // For Atlas
 337     if(synchronousLoading && atlasingStatus)
 338     {
 339       const bool synchronousAtlasAvaliable = (desiredSize != ImageDimensions() || url.IsLocalResource()) ? imageAtlasManager->CheckAtlasAvailable(url, desiredSize)
 340                                                                                                          : false;
 341       if(synchronousAtlasAvaliable)
 342       {
 343         std::vector<Devel::PixelBuffer> pixelBuffers;
 344         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, false, pixelBuffers);
 345
 346         if(!pixelBuffers.empty() && maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 347         {
 348           std::vector<Devel::PixelBuffer> maskPixelBuffers;
 349           LoadImageSynchronously(maskInfo->mAlphaMaskUrl, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, true, false, maskPixelBuffers);
 350           if(!maskPixelBuffers.empty())
 351           {
 352             pixelBuffers[0].ApplyMask(maskPixelBuffers[0], maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 353           }
 354         }
 355
 356         PixelData data;
 357         if(!pixelBuffers.empty())
 358         {
 359           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 360           data = Devel::PixelBuffer::Convert(pixelBuffers[0]); // takes ownership of buffer
 361
 362           if(data)
 363           {
 364             textureSet = imageAtlasManager->Add(textureRect, data);
 365             if(textureSet)
 366             {
 367               textureRectSize.SetWidth(data.GetWidth());
 368               textureRectSize.SetHeight(data.GetHeight());
 369             }
 370           }
 371           else
 372           {
 373             DALI_LOG_ERROR("TextureManager::LoadTexture: Synchronous Texture loading with atlasing is failed.\n");
 374           }
 375         }
 376         if(!textureSet)
 377         {
 378           atlasingStatus = false;
 379         }
 380       }
 381     }
 382
 383     if(!textureSet)
 384     {
 385       loadingStatus = true;
 386       // Atlas manager can chage desired size when it is set by 0,0.
 387       // We should store into textureRectSize only if atlasing successed.
 388       // So copy inputed desiredSize, and replace value into textureRectSize only if atlasing success.
 389       Dali::ImageDimensions atlasDesiredSize = desiredSize;
 390       if(atlasingStatus)
 391       {
 392         if(url.IsBufferResource())
 393         {
 394           const EncodedImageBuffer& encodedImageBuffer = GetEncodedImageBuffer(url.GetUrl());
 395           if(encodedImageBuffer)
 396           {
 397             textureSet = imageAtlasManager->Add(textureRect, encodedImageBuffer, desiredSize, fittingMode, true, atlasObserver);
 398           }
 399         }
 400         else
 401         {
 402           textureSet = imageAtlasManager->Add(textureRect, url, atlasDesiredSize, fittingMode, true, atlasObserver);
 403         }
 404       }
 405       if(!textureSet) // big image, no atlasing or atlasing failed
 406       {
 407         atlasingStatus = false;
 408
 409         TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 410         float     contentScaleFactor = 1.0f;
 411         bool      cropToMask         = false;
 412         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 413         {
 414           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? StorageType::KEEP_PIXEL_BUFFER : StorageType::KEEP_TEXTURE, synchronousLoading);
 415           alphaMaskId            = maskInfo->mAlphaMaskId;
 416           if(maskInfo && maskInfo->mPreappliedMasking)
 417           {
 418             contentScaleFactor = maskInfo->mContentScaleFactor;
 419             cropToMask         = maskInfo->mCropToMask;
 420           }
 421         }
 422
 423         textureId = RequestLoad(
 424           url,
 425           alphaMaskId,
 426           textureId,
 427           contentScaleFactor,
 428           desiredSize,
 429           fittingMode,
 430           samplingMode,
 431           UseAtlas::NO_ATLAS,
 432           cropToMask,
 433           textureObserver,
 434           orientationCorrection,
 435           reloadPolicy,
 436           preMultiplyOnLoad,
 437           synchronousLoading);
 438
 439         TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 440         if(loadState == TextureManager::LoadState::UPLOADED)
 441         {
 442           // LoadComplete has already been called - keep the same texture set
 443           textureSet = GetTextureSet(textureId);
 444         }
 445
 446         // If we are loading the texture, or waiting for the ready signal handler to complete, inform
 447         // caller that they need to wait.
 448         loadingStatus = (loadState == TextureManager::LoadState::LOADING ||
 449                          loadState == TextureManager::LoadState::WAITING_FOR_MASK ||
 450                          loadState == TextureManager::LoadState::MASK_APPLYING ||
 451                          loadState == TextureManager::LoadState::MASK_APPLIED ||
 452                          loadState == TextureManager::LoadState::NOT_STARTED ||
 453                          mLoadingQueueTextureId != INVALID_TEXTURE_ID);
 454       }
 455       else
 456       {
 457         textureRectSize = atlasDesiredSize;
 458       }
 459     }
 460   }
 461
 462   if(synchronousLoading)
 463   {
 464     loadingStatus = false;
 465   }
 466
 467   return textureSet;
 468 }
 469
 470 TextureManager::TextureId TextureManager::RequestLoad(
 471   const VisualUrl&                    url,
 472   const ImageDimensions&              desiredSize,
 473   const Dali::FittingMode::Type&      fittingMode,
 474   const Dali::SamplingMode::Type&     samplingMode,
 475   const UseAtlas&                     useAtlas,
 476   TextureUploadObserver*              observer,
 477   const bool&                         orientationCorrection,
 478   const TextureManager::ReloadPolicy& reloadPolicy,
 479   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 480   const bool&                         synchronousLoading)
 481 {
 482   return RequestLoadInternal(url, INVALID_TEXTURE_ID, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, useAtlas, false, StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 483 }
 484
 485 TextureManager::TextureId TextureManager::RequestLoad(
 486   const VisualUrl&                    url,
 487   const TextureManager::TextureId&    maskTextureId,
 488   const TextureManager::TextureId&    previousTextureId,
 489   const float&                        contentScale,
 490   const Dali::ImageDimensions&        desiredSize,
 491   const Dali::FittingMode::Type&      fittingMode,
 492   const Dali::SamplingMode::Type&     samplingMode,
 493   const TextureManager::UseAtlas&     useAtlas,
 494   const bool&                         cropToMask,
 495   TextureUploadObserver*              observer,
 496   const bool&                         orientationCorrection,
 497   const TextureManager::ReloadPolicy& reloadPolicy,
 498   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 499   const bool&                         synchronousLoading)
 500 {
 501   return RequestLoadInternal(url, maskTextureId, previousTextureId, contentScale, desiredSize, fittingMode, samplingMode, useAtlas, cropToMask, StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 502 }
 503
 504 TextureManager::TextureId TextureManager::RequestMaskLoad(
 505   const VisualUrl& maskUrl,
 506   StorageType      storageType,
 507   const bool&      synchronousLoading)
 508 {
 509   // Use the normal load procedure to get the alpha mask.
 510   auto preMultiply = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 511   return RequestLoadInternal(maskUrl, INVALID_TEXTURE_ID, INVALID_TEXTURE_ID, 1.0f, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, UseAtlas::NO_ATLAS, false, storageType, NULL, true, TextureManager::ReloadPolicy::CACHED, preMultiply, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 512 }
 513
 514 TextureManager::TextureId TextureManager::RequestLoadInternal(
 515   const VisualUrl&                    url,
 516   const TextureManager::TextureId&    maskTextureId,
 517   const TextureManager::TextureId&    previousTextureId,
 518   const float&                        contentScale,
 519   const Dali::ImageDimensions&        desiredSize,
 520   const Dali::FittingMode::Type&      fittingMode,
 521   const Dali::SamplingMode::Type&     samplingMode,
 522   const TextureManager::UseAtlas&     useAtlas,
 523   const bool&                         cropToMask,
 524   const TextureManager::StorageType&  storageType,
 525   TextureUploadObserver*              observer,
 526   const bool&                         orientationCorrection,
 527   const TextureManager::ReloadPolicy& reloadPolicy,
 528   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 529   Dali::AnimatedImageLoading          animatedImageLoading,
 530   const std::uint32_t&                frameIndex,
 531   const bool&                         synchronousLoading)
 532 {
 533   TextureHash       textureHash   = INITIAL_HASH_NUMBER;
 534   TextureCacheIndex cacheIndex    = INVALID_CACHE_INDEX;
 535   bool              loadYuvPlanes = (mLoadYuvPlanes && maskTextureId == INVALID_TEXTURE_ID && storageType == StorageType::UPLOAD_TO_TEXTURE);
 536
 537   if(storageType != StorageType::RETURN_PIXEL_BUFFER)
 538   {
 539     textureHash = mTextureCacheManager.GenerateHash(url, desiredSize, fittingMode, samplingMode, useAtlas, maskTextureId, cropToMask, frameIndex);
 540
 541     // Look up the texture by hash. Note: The extra parameters are used in case of a hash collision.
 542     cacheIndex = mTextureCacheManager.FindCachedTexture(textureHash, url, desiredSize, fittingMode, samplingMode, useAtlas, storageType, maskTextureId, cropToMask, preMultiplyOnLoad, (animatedImageLoading) ? true : false, frameIndex);
 543   }
 544
 545   TextureManager::TextureId textureId = INVALID_TEXTURE_ID;
 546   // Check if the requested Texture exists in the cache.
 547   if(cacheIndex != INVALID_CACHE_INDEX)
 548   {
 549     if(TextureManager::ReloadPolicy::CACHED == reloadPolicy || TextureManager::INVALID_TEXTURE_ID == previousTextureId)
 550     {
 551       // Mark this texture being used by another client resource, or Reload forced without request load before.
 552       // Forced reload which have current texture before, would replace the current texture.
 553       // without the need for incrementing the reference count.
 554       ++(mTextureCacheManager[cacheIndex].referenceCount);
 555     }
 556     textureId = mTextureCacheManager[cacheIndex].textureId;
 557
 558     // Update preMultiplyOnLoad value. It should be changed according to preMultiplied value of the cached info.
 559     preMultiplyOnLoad = mTextureCacheManager[cacheIndex].preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 560     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) Using cached texture id@%d, textureId=%d, maskTextureId=%d, prevTextureId=%d, frameindex=%d, premultiplied=%d, refCount=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, maskTextureId, previousTextureId, frameIndex, mTextureCacheManager[cacheIndex].preMultiplied ? 1 : 0, static_cast<int>(mTextureCacheManager[cacheIndex].referenceCount));
 561   }
 562
 563   if(textureId == INVALID_TEXTURE_ID) // There was no caching, or caching not required
 564   {
 565     textureId = mTextureCacheManager.GenerateTextureId();
 566
 567     bool preMultiply = (preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 568
 569     // Cache new texutre, and get cacheIndex.
 570     cacheIndex = mTextureCacheManager.AppendCache(TextureInfo(textureId, maskTextureId, url, desiredSize, contentScale, fittingMode, samplingMode, false, cropToMask, useAtlas, textureHash, orientationCorrection, preMultiply, animatedImageLoading, frameIndex, loadYuvPlanes));
 571     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) New texture, cacheIndex:%d, textureId=%d, maskTextureId=%d, frameindex=%d premultiply=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, maskTextureId, frameIndex, preMultiply);
 572   }
 573
 574   // The below code path is common whether we are using the cache or not.
 575   // The textureInfoIndex now refers to either a pre-existing cached TextureInfo,
 576   // or a new TextureInfo just created.
 577   TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 578   textureInfo.maskTextureId         = maskTextureId;
 579   textureInfo.storageType           = storageType;
 580   textureInfo.orientationCorrection = orientationCorrection;
 581
 582   // the case using external texture has already been loaded texture, so change its status to WAITING_FOR_MASK.
 583   if(url.GetProtocolType() == VisualUrl::TEXTURE)
 584   {
 585     if(textureInfo.loadState != LoadState::UPLOADED)
 586     {
 587       textureInfo.loadState = TextureManager::LoadState::WAITING_FOR_MASK;
 588     }
 589   }
 590
 591   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureInfo loadState:%s\n", GET_LOAD_STATE_STRING(textureInfo.loadState));
 592
 593   // Force reloading of texture by setting loadState unless already loading or cancelled.
 594   if(TextureManager::ReloadPolicy::FORCED == reloadPolicy &&
 595      TextureManager::LoadState::LOADING != textureInfo.loadState &&
 596      TextureManager::LoadState::WAITING_FOR_MASK != textureInfo.loadState &&
 597      TextureManager::LoadState::MASK_APPLYING != textureInfo.loadState &&
 598      TextureManager::LoadState::MASK_APPLIED != textureInfo.loadState &&
 599      TextureManager::LoadState::CANCELLED != textureInfo.loadState &&
 600      TextureManager::LoadState::MASK_CANCELLED != textureInfo.loadState)
 601   {
 602     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);
 603     textureInfo.loadState = TextureManager::LoadState::NOT_STARTED;
 604   }
 605
 606   if(!synchronousLoading)
 607   {
 608     // Check if we should add the observer.
 609     // Only do this if we have not loaded yet and it will not have loaded by the end of this method.
 610     switch(textureInfo.loadState)
 611     {
 612       case TextureManager::LoadState::LOAD_FAILED: // Failed notifies observer which then stops observing.
 613       case TextureManager::LoadState::NOT_STARTED:
 614       {
 615         LoadOrQueueTexture(textureInfo, observer); // If called inside NotifyObservers, queues until afterwards
 616         break;
 617       }
 618       case TextureManager::LoadState::LOADING:
 619       case TextureManager::LoadState::WAITING_FOR_MASK:
 620       case TextureManager::LoadState::MASK_APPLYING:
 621       case TextureManager::LoadState::MASK_APPLIED:
 622       {
 623         // Do not observe even we reload forced when texture is already loading state.
 624         if(TextureManager::ReloadPolicy::CACHED == reloadPolicy || TextureManager::INVALID_TEXTURE_ID == previousTextureId)
 625         {
 626           ObserveTexture(textureInfo, observer);
 627         }
 628         break;
 629       }
 630       case TextureManager::LoadState::UPLOADED:
 631       {
 632         if(observer)
 633         {
 634           LoadOrQueueTexture(textureInfo, observer);
 635         }
 636         break;
 637       }
 638       case TextureManager::LoadState::CANCELLED:
 639       {
 640         // A cancelled texture hasn't finished loading yet. Treat as a loading texture
 641         // (it's ref count has already been incremented, above)
 642         textureInfo.loadState = TextureManager::LoadState::LOADING;
 643         ObserveTexture(textureInfo, observer);
 644         break;
 645       }
 646       case TextureManager::LoadState::MASK_CANCELLED:
 647       {
 648         // A cancelled texture hasn't finished mask applying yet. Treat as a mask applying texture
 649         // (it's ref count has already been incremented, above)
 650         textureInfo.loadState = TextureManager::LoadState::MASK_APPLYING;
 651         ObserveTexture(textureInfo, observer);
 652         break;
 653       }
 654       case TextureManager::LoadState::LOAD_FINISHED:
 655       {
 656         // Loading has already completed.
 657         if(observer && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
 658         {
 659           LoadOrQueueTexture(textureInfo, observer);
 660         }
 661         break;
 662       }
 663     }
 664   }
 665   else
 666   {
 667     // If the image is already finished to load, use cached texture.
 668     // We don't need to consider Observer because this is synchronous loading.
 669     if(!(textureInfo.loadState == TextureManager::LoadState::UPLOADED ||
 670          textureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED))
 671     {
 672       if(url.GetProtocolType() == VisualUrl::TEXTURE)
 673       {
 674         // Get external textureSet from cacheManager.
 675         std::string location = textureInfo.url.GetLocation();
 676         if(!location.empty())
 677         {
 678           TextureId id                  = std::stoi(location);
 679           auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
 680           textureInfo.textures.push_back(externalTextureInfo.textureSet.GetTexture(0));
 681           textureInfo.loadState = LoadState::UPLOADED;
 682         }
 683       }
 684       else
 685       {
 686         std::vector<Devel::PixelBuffer> pixelBuffers;
 687         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, loadYuvPlanes, pixelBuffers);
 688
 689         if(pixelBuffers.empty())
 690         {
 691           // If pixelBuffer loading is failed in synchronously, call RequestRemove() method.
 692           RequestRemove(textureId, nullptr);
 693           return INVALID_TEXTURE_ID;
 694         }
 695
 696         if(storageType == StorageType::KEEP_PIXEL_BUFFER) // For the mask image loading.
 697         {
 698           textureInfo.pixelBuffer = pixelBuffers[0]; // Store the pixel data
 699           textureInfo.loadState   = LoadState::LOAD_FINISHED;
 700         }
 701         else // For the image loading.
 702         {
 703           Texture maskTexture;
 704           if(maskTextureId != INVALID_TEXTURE_ID)
 705           {
 706             TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 707             if(maskCacheIndex != INVALID_CACHE_INDEX)
 708             {
 709               if(mTextureCacheManager[maskCacheIndex].storageType == StorageType::KEEP_PIXEL_BUFFER)
 710               {
 711                 Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
 712                 if(maskPixelBuffer)
 713                 {
 714                   pixelBuffers[0].ApplyMask(maskPixelBuffer, contentScale, cropToMask);
 715                 }
 716                 else
 717                 {
 718                   DALI_LOG_ERROR("Mask image cached invalid pixel buffer!\n");
 719                 }
 720               }
 721             }
 722             else
 723             {
 724               DALI_LOG_ERROR("Mask image is not stored in cache.\n");
 725             }
 726           }
 727           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 728
 729           // Upload texture
 730           UploadTextures(pixelBuffers, textureInfo);
 731         }
 732       }
 733     }
 734   }
 735
 736   return textureId;
 737 }
 738
 739 void TextureManager::RequestRemove(const TextureManager::TextureId& textureId, TextureUploadObserver* observer)
 740 {
 741   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestRemove( textureId=%d observer=%p )\n", textureId, observer);
 742
 743   // Queue to remove.
 744   if(textureId != INVALID_TEXTURE_ID)
 745   {
 746     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 747     if(textureCacheIndex != INVALID_CACHE_INDEX)
 748     {
 749       if(observer)
 750       {
 751         // Remove observer from cached texture info
 752         TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
 753         RemoveTextureObserver(textureInfo, observer);
 754       }
 755
 756       mRemoveQueue.PushBack(textureId);
 757
 758       if(!mRemoveProcessorRegistered && Adaptor::IsAvailable())
 759       {
 760         mRemoveProcessorRegistered = true;
 761         Adaptor::Get().RegisterProcessor(*this, true);
 762       }
 763     }
 764   }
 765 }
 766
 767 void TextureManager::Remove(const TextureManager::TextureId& textureId)
 768 {
 769   if(textureId != INVALID_TEXTURE_ID)
 770   {
 771     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 772     if(textureCacheIndex != INVALID_CACHE_INDEX)
 773     {
 774       TextureManager::TextureId maskTextureId = INVALID_TEXTURE_ID;
 775       TextureInfo&              textureInfo(mTextureCacheManager[textureCacheIndex]);
 776       // We only need to consider maskTextureId when texture's loadState is not cancelled. Because it is already deleted.
 777       if(textureInfo.loadState != LoadState::CANCELLED && textureInfo.loadState != LoadState::MASK_CANCELLED)
 778       {
 779         if(textureInfo.maskTextureId != INVALID_TEXTURE_ID)
 780         {
 781           maskTextureId = textureInfo.maskTextureId;
 782         }
 783       }
 784
 785       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));
 786
 787       // Remove textureId in CacheManager. Now, textureInfo is invalidate.
 788       mTextureCacheManager.RemoveCache(textureInfo);
 789
 790       // Remove maskTextureId in CacheManager
 791       if(maskTextureId != INVALID_TEXTURE_ID)
 792       {
 793         TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 794         if(maskCacheIndex != INVALID_CACHE_INDEX)
 795         {
 796           TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
 797
 798           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));
 799
 800           mTextureCacheManager.RemoveCache(maskTextureInfo);
 801         }
 802       }
 803     }
 804   }
 805 }
 806
 807 void TextureManager::ProcessRemoveQueue()
 808 {
 809   // Note that RemoveQueue is not be changed during Remove().
 810   for(auto&& textureId : mRemoveQueue)
 811   {
 812     if(textureId != INVALID_TEXTURE_ID)
 813     {
 814       Remove(textureId);
 815     }
 816   }
 817   mRemoveQueue.Clear();
 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::AddObserver(TextureManager::LifecycleObserver& observer)
 870 {
 871   // make sure an observer doesn't observe the same object twice
 872   // otherwise it will get multiple calls to ObjectDestroyed()
 873   DALI_ASSERT_DEBUG(mLifecycleObservers.End() == std::find(mLifecycleObservers.Begin(), mLifecycleObservers.End(), &observer));
 874   mLifecycleObservers.PushBack(&observer);
 875 }
 876
 877 void TextureManager::RemoveObserver(TextureManager::LifecycleObserver& observer)
 878 {
 879   // Find the observer...
 880   auto endIter = mLifecycleObservers.End();
 881   for(auto iter = mLifecycleObservers.Begin(); iter != endIter; ++iter)
 882   {
 883     if((*iter) == &observer)
 884     {
 885       mLifecycleObservers.Erase(iter);
 886       break;
 887     }
 888   }
 889   DALI_ASSERT_DEBUG(endIter != mLifecycleObservers.End());
 890 }
 891
 892 void TextureManager::LoadOrQueueTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 893 {
 894   switch(textureInfo.loadState)
 895   {
 896     case LoadState::NOT_STARTED:
 897     case LoadState::LOAD_FAILED:
 898     {
 899       if(mLoadingQueueTextureId != INVALID_TEXTURE_ID)
 900       {
 901         QueueLoadTexture(textureInfo, observer);
 902       }
 903       else
 904       {
 905         LoadTexture(textureInfo, observer);
 906       }
 907       break;
 908     }
 909     case LoadState::UPLOADED:
 910     {
 911       if(mLoadingQueueTextureId != INVALID_TEXTURE_ID)
 912       {
 913         QueueLoadTexture(textureInfo, observer);
 914       }
 915       else
 916       {
 917         // The Texture has already loaded. The other observers have already been notified.
 918         // We need to send a "late" loaded notification for this observer.
 919         if(observer)
 920         {
 921           EmitLoadComplete(observer, textureInfo, true);
 922         }
 923       }
 924       break;
 925     }
 926     case LoadState::LOADING:
 927     case LoadState::CANCELLED:
 928     case LoadState::MASK_CANCELLED:
 929     case LoadState::LOAD_FINISHED:
 930     case LoadState::WAITING_FOR_MASK:
 931     case LoadState::MASK_APPLYING:
 932     case LoadState::MASK_APPLIED:
 933     {
 934       break;
 935     }
 936   }
 937 }
 938
 939 void TextureManager::QueueLoadTexture(const TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 940 {
 941   const auto& textureId = textureInfo.textureId;
 942   mLoadQueue.PushBack(QueueElement(textureId, observer));
 943
 944   if(observer)
 945   {
 946     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Connect DestructionSignal to observer:%p\n", observer);
 947     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 948   }
 949 }
 950
 951 void TextureManager::LoadTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 952 {
 953   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::LoadTexture(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
 954   textureInfo.loadState = LoadState::LOADING;
 955   if(!textureInfo.loadSynchronously)
 956   {
 957     auto premultiplyOnLoad = (textureInfo.preMultiplyOnLoad && textureInfo.maskTextureId == INVALID_TEXTURE_ID) ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
 958     if(textureInfo.animatedImageLoading)
 959     {
 960       mAsyncLoader->LoadAnimatedImage(textureInfo.textureId, textureInfo.animatedImageLoading, textureInfo.frameIndex, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, premultiplyOnLoad);
 961     }
 962     else
 963     {
 964       mAsyncLoader->Load(textureInfo.textureId, textureInfo.url, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, textureInfo.orientationCorrection, premultiplyOnLoad, textureInfo.loadYuvPlanes);
 965     }
 966   }
 967   ObserveTexture(textureInfo, observer);
 968 }
 969
 970 void TextureManager::ProcessLoadQueue()
 971 {
 972   for(auto&& element : mLoadQueue)
 973   {
 974     if(element.mTextureId == INVALID_TEXTURE_ID)
 975     {
 976       continue;
 977     }
 978
 979     TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(element.mTextureId);
 980     if(cacheIndex != INVALID_CACHE_INDEX)
 981     {
 982       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 983
 984       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));
 985
 986       if((textureInfo.loadState == LoadState::UPLOADED) || (textureInfo.loadState == LoadState::LOAD_FINISHED && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER))
 987       {
 988         if(element.mObserver)
 989         {
 990           EmitLoadComplete(element.mObserver, textureInfo, true);
 991         }
 992       }
 993       else if(textureInfo.loadState == 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 != LoadState::CANCELLED && textureInfo.loadState != 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   // Was the load successful?
1046   if(!pixelBuffers.empty())
1047   {
1048     if(pixelBuffers.size() == 1)
1049     {
1050       Devel::PixelBuffer pixelBuffer = pixelBuffers[0];
1051       if(pixelBuffer && (pixelBuffer.GetWidth() != 0) && (pixelBuffer.GetHeight() != 0))
1052       {
1053         // No atlas support for now
1054         textureInfo.useAtlas      = UseAtlas::NO_ATLAS;
1055         textureInfo.preMultiplied = pixelBuffer.IsAlphaPreMultiplied();
1056
1057         if(textureInfo.storageType == StorageType::UPLOAD_TO_TEXTURE)
1058         {
1059           // If there is a mask texture ID associated with this texture, then apply the mask
1060           // if it's already loaded. If it hasn't, and the mask is still loading,
1061           // wait for the mask to finish loading.
1062           // note, If the texture is already uploaded synchronously during loading,
1063           // we don't need to apply mask.
1064           if(textureInfo.loadState != LoadState::UPLOADED &&
1065              textureInfo.maskTextureId != INVALID_TEXTURE_ID)
1066           {
1067             if(textureInfo.loadState == LoadState::MASK_APPLYING)
1068             {
1069               textureInfo.loadState = LoadState::MASK_APPLIED;
1070               UploadTextures(pixelBuffers, textureInfo);
1071               NotifyObservers(textureInfo, true);
1072             }
1073             else
1074             {
1075               LoadState maskLoadState = mTextureCacheManager.GetTextureStateInternal(textureInfo.maskTextureId);
1076               textureInfo.pixelBuffer = pixelBuffer; // Store the pixel buffer temporarily
1077               if(maskLoadState == LoadState::LOADING)
1078               {
1079                 textureInfo.loadState = LoadState::WAITING_FOR_MASK;
1080               }
1081               else if(maskLoadState == LoadState::LOAD_FINISHED || maskLoadState == LoadState::UPLOADED)
1082               {
1083                 // Send New Task to Thread
1084                 TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1085                 if(maskCacheIndex != INVALID_CACHE_INDEX)
1086                 {
1087                   TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1088                   if(maskTextureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER)
1089                   {
1090                     // Send New Task to Thread
1091                     ApplyMask(textureInfo, textureInfo.maskTextureId);
1092                   }
1093                   else if(maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1094                   {
1095                     // Upload image texture. textureInfo.loadState will be UPLOADED.
1096                     UploadTextures(pixelBuffers, textureInfo);
1097
1098                     // notify mask texture set.
1099                     NotifyObservers(textureInfo, true);
1100                   }
1101                 }
1102               }
1103               else // maskLoadState == LoadState::LOAD_FAILED
1104               {
1105                 // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1106                 DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1107                 UploadTextures(pixelBuffers, textureInfo);
1108                 NotifyObservers(textureInfo, true);
1109               }
1110             }
1111           }
1112           else
1113           {
1114             UploadTextures(pixelBuffers, textureInfo);
1115             NotifyObservers(textureInfo, true);
1116           }
1117         }
1118         else
1119         {
1120           textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
1121           textureInfo.loadState   = LoadState::LOAD_FINISHED;
1122
1123           if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1124           {
1125             NotifyObservers(textureInfo, true);
1126           }
1127           else // for the StorageType::KEEP_PIXEL_BUFFER and StorageType::KEEP_TEXTURE
1128           {
1129             // Check if there was another texture waiting for this load to complete
1130             // (e.g. if this was an image mask, and its load is on a different thread)
1131             CheckForWaitingTexture(textureInfo);
1132           }
1133         }
1134       }
1135     }
1136     else
1137     {
1138       // YUV case
1139       // No atlas support for now
1140       textureInfo.useAtlas      = UseAtlas::NO_ATLAS;
1141       textureInfo.preMultiplied = false;
1142
1143       UploadTextures(pixelBuffers, textureInfo);
1144       NotifyObservers(textureInfo, true);
1145     }
1146   }
1147   else
1148   {
1149     textureInfo.loadState = LoadState::LOAD_FAILED;
1150     if(textureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER || textureInfo.storageType == StorageType::KEEP_TEXTURE)
1151     {
1152       // Check if there was another texture waiting for this load to complete
1153       // (e.g. if this was an image mask, and its load is on a different thread)
1154       CheckForWaitingTexture(textureInfo);
1155     }
1156     else
1157     {
1158       NotifyObservers(textureInfo, false);
1159     }
1160   }
1161 }
1162
1163 void TextureManager::CheckForWaitingTexture(TextureManager::TextureInfo& maskTextureInfo)
1164 {
1165   if(maskTextureInfo.loadState == LoadState::LOAD_FINISHED &&
1166      maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1167   {
1168     // Upload mask texture. textureInfo.loadState will be UPLOADED.
1169     std::vector<Devel::PixelBuffer> pixelBuffers;
1170     pixelBuffers.push_back(maskTextureInfo.pixelBuffer);
1171     UploadTextures(pixelBuffers, maskTextureInfo);
1172   }
1173
1174   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): maskTextureId=%d, maskTextureUrl=%s\n", maskTextureInfo.textureId, maskTextureInfo.url.GetUrl().c_str());
1175
1176   // Search the cache, checking if any texture has this texture id as a maskTextureId
1177   const std::size_t size = mTextureCacheManager.size();
1178
1179   // Keep notify observer required textureIds.
1180   // Note : NotifyObservers can change mTextureCacheManager cache struct. We should check id's validation before notify.
1181   std::vector<TextureId> notifyRequiredTextureIds;
1182
1183   // TODO : Refactorize here to not iterate whole cached image.
1184   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1185   {
1186     if(mTextureCacheManager[cacheIndex].maskTextureId == maskTextureInfo.textureId &&
1187        mTextureCacheManager[cacheIndex].loadState == LoadState::WAITING_FOR_MASK)
1188     {
1189       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1190
1191       if(maskTextureInfo.loadState == LoadState::LOAD_FINISHED)
1192       {
1193         if(maskTextureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER)
1194         {
1195           // Send New Task to Thread
1196           ApplyMask(textureInfo, maskTextureInfo.textureId);
1197         }
1198       }
1199       else if(maskTextureInfo.loadState == LoadState::UPLOADED)
1200       {
1201         if(maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1202         {
1203           if(textureInfo.url.GetProtocolType() == VisualUrl::TEXTURE)
1204           {
1205             // Get external textureSet from cacheManager.
1206             std::string location = textureInfo.url.GetLocation();
1207             if(!location.empty())
1208             {
1209               TextureId id                  = std::stoi(location);
1210               auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
1211               textureInfo.textures.push_back(externalTextureInfo.textureSet.GetTexture(0));
1212               textureInfo.loadState = LoadState::UPLOADED;
1213             }
1214           }
1215           else
1216           {
1217             // Upload image texture. textureInfo.loadState will be UPLOADED.
1218             std::vector<Devel::PixelBuffer> pixelBuffers;
1219             pixelBuffers.push_back(textureInfo.pixelBuffer);
1220             UploadTextures(pixelBuffers, textureInfo);
1221           }
1222
1223           // Increase reference counts for notify required textureId.
1224           // Now we can assume that we don't remove & re-assign this textureId
1225           // during NotifyObserver signal emit.
1226           maskTextureInfo.referenceCount++;
1227           textureInfo.referenceCount++;
1228
1229           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): Ready to notify textureId=%d\n", textureInfo.textureId);
1230
1231           notifyRequiredTextureIds.push_back(textureInfo.textureId);
1232         }
1233       }
1234       else // maskTextureInfo.loadState == LoadState::LOAD_FAILED
1235       {
1236         // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1237         DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1238         std::vector<Devel::PixelBuffer> pixelBuffers;
1239         pixelBuffers.push_back(textureInfo.pixelBuffer);
1240         UploadTextures(pixelBuffers, textureInfo);
1241
1242         // Increase reference counts for notify required textureId.
1243         // Now we can assume that we don't remove & re-assign this textureId
1244         // during NotifyObserver signal emit.
1245         maskTextureInfo.referenceCount++;
1246         textureInfo.referenceCount++;
1247
1248         DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): Ready to notify textureId=%d\n", textureInfo.textureId);
1249
1250         notifyRequiredTextureIds.push_back(textureInfo.textureId);
1251       }
1252     }
1253   }
1254
1255   // Notify textures are masked
1256   for(const auto textureId : notifyRequiredTextureIds)
1257   {
1258     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1259     if(textureCacheIndex != INVALID_CACHE_INDEX)
1260     {
1261       TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
1262       NotifyObservers(textureInfo, true);
1263     }
1264   }
1265
1266   // Decrease reference count
1267   for(const auto textureId : notifyRequiredTextureIds)
1268   {
1269     RequestRemove(textureId, nullptr);
1270   }
1271 }
1272
1273 void TextureManager::ApplyMask(TextureManager::TextureInfo& textureInfo, const TextureManager::TextureId& maskTextureId)
1274 {
1275   TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
1276   if(maskCacheIndex != INVALID_CACHE_INDEX)
1277   {
1278     Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
1279     Devel::PixelBuffer pixelBuffer     = textureInfo.pixelBuffer;
1280     textureInfo.pixelBuffer.Reset();
1281
1282     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ApplyMask(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
1283
1284     textureInfo.loadState  = LoadState::MASK_APPLYING;
1285     auto premultiplyOnLoad = textureInfo.preMultiplyOnLoad ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
1286     mAsyncLoader->ApplyMask(textureInfo.textureId, pixelBuffer, maskPixelBuffer, textureInfo.scaleFactor, textureInfo.cropToMask, premultiplyOnLoad);
1287   }
1288 }
1289
1290 void TextureManager::UploadTextures(std::vector<Devel::PixelBuffer>& pixelBuffers, TextureManager::TextureInfo& textureInfo)
1291 {
1292   if(!pixelBuffers.empty() && textureInfo.loadState != LoadState::UPLOADED && textureInfo.useAtlas != UseAtlas::USE_ATLAS)
1293   {
1294     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "  TextureManager::UploadTextures() New Texture for textureId:%d\n", textureInfo.textureId);
1295
1296     // Check if this pixelBuffer is premultiplied
1297     textureInfo.preMultiplied = pixelBuffers[0].IsAlphaPreMultiplied();
1298
1299     auto& renderingAddOn = RenderingAddOn::Get();
1300     if(renderingAddOn.IsValid())
1301     {
1302       renderingAddOn.CreateGeometry(textureInfo.textureId, pixelBuffers[0]);
1303     }
1304
1305     // Remove previous textures and insert new textures
1306     textureInfo.textures.clear();
1307
1308     for(auto&& pixelBuffer : pixelBuffers)
1309     {
1310       Texture   texture   = Texture::New(Dali::TextureType::TEXTURE_2D, pixelBuffer.GetPixelFormat(), pixelBuffer.GetWidth(), pixelBuffer.GetHeight());
1311       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer);
1312       texture.Upload(pixelData);
1313       textureInfo.textures.push_back(texture);
1314     }
1315   }
1316
1317   // Update the load state.
1318   // Note: This is regardless of success as we care about whether a
1319   // load attempt is in progress or not.  If unsuccessful, a broken
1320   // image is still loaded.
1321   textureInfo.loadState = LoadState::UPLOADED;
1322 }
1323
1324 void TextureManager::NotifyObservers(TextureManager::TextureInfo& textureInfo, const bool& success)
1325 {
1326   TextureId textureId = textureInfo.textureId;
1327
1328   // If there is an observer: Notify the load is complete, whether successful or not,
1329   // and erase it from the list
1330   TextureInfo* info = &textureInfo;
1331
1332   if(info->animatedImageLoading)
1333   {
1334     // If loading failed, we don't need to get frameCount and frameInterval.
1335     if(success)
1336     {
1337       info->frameCount    = info->animatedImageLoading.GetImageCount();
1338       info->frameInterval = info->animatedImageLoading.GetFrameInterval(info->frameIndex);
1339     }
1340     info->animatedImageLoading.Reset();
1341   }
1342
1343   mLoadingQueueTextureId = textureId;
1344
1345   // Reverse observer list that we can pop_back the observer.
1346   std::reverse(info->observerList.Begin(), info->observerList.End());
1347
1348   while(info->observerList.Count())
1349   {
1350     TextureUploadObserver* observer = *(info->observerList.End() - 1u);
1351
1352     // During LoadComplete() a Control ResourceReady() signal is emitted.
1353     // During that signal the app may add remove /add Textures (e.g. via
1354     // ImageViews).
1355     // It is possible for observers to be removed from the observer list,
1356     // and it is also possible for the mTextureInfoContainer to be modified,
1357     // invalidating the reference to the textureInfo struct.
1358     // Texture load requests for the same URL are deferred until the end of this
1359     // method.
1360     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));
1361     // It is possible for the observer to be deleted.
1362     // Disconnect and remove the observer first.
1363     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1364     observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1365
1366     info->observerList.Erase(info->observerList.End() - 1u);
1367
1368     EmitLoadComplete(observer, *info, success);
1369
1370     // Get the textureInfo from the container again as it may have been invalidated.
1371     TextureCacheIndex textureInfoIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1372     if(textureInfoIndex == INVALID_CACHE_INDEX)
1373     {
1374       break; // texture has been removed - can stop.
1375     }
1376     info = &mTextureCacheManager[textureInfoIndex];
1377   }
1378
1379   mLoadingQueueTextureId = INVALID_TEXTURE_ID;
1380   ProcessLoadQueue();
1381
1382   if(info->storageType == StorageType::RETURN_PIXEL_BUFFER && info->observerList.Count() == 0)
1383   {
1384     RequestRemove(info->textureId, nullptr);
1385   }
1386 }
1387
1388 void TextureManager::ObserverDestroyed(TextureUploadObserver* observer)
1389 {
1390   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "TextureManager::ObserverDestroyed() observer:%p\n", observer);
1391
1392   const std::size_t size = mTextureCacheManager.size();
1393   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1394   {
1395     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1396     for(TextureInfo::ObserverListType::Iterator j = textureInfo.observerList.Begin();
1397         j != textureInfo.observerList.End();)
1398     {
1399       if(*j == observer)
1400       {
1401         j = textureInfo.observerList.Erase(j);
1402       }
1403       else
1404       {
1405         ++j;
1406       }
1407     }
1408   }
1409
1410   // Remove element from the LoadQueue
1411   for(auto&& element : mLoadQueue)
1412   {
1413     if(element.mObserver == observer)
1414     {
1415       element.mTextureId = INVALID_TEXTURE_ID;
1416       element.mObserver  = nullptr;
1417     }
1418   }
1419 }
1420
1421 Dali::Geometry TextureManager::GetRenderGeometry(const TextureManager::TextureId& textureId, std::uint32_t& frontElements, std::uint32_t& backElements)
1422 {
1423   return RenderingAddOn::Get().IsValid() ? RenderingAddOn::Get().GetGeometry(textureId, frontElements, backElements) : Geometry();
1424 }
1425
1426 void TextureManager::EmitLoadComplete(TextureUploadObserver* observer, TextureManager::TextureInfo& textureInfo, const bool& success)
1427 {
1428   if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1429   {
1430     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::PIXEL_BUFFER, textureInfo.pixelBuffer, textureInfo.url.GetUrl(), textureInfo.preMultiplied));
1431   }
1432   else
1433   {
1434     TextureSet textureSet = GetTextureSet(textureInfo);
1435     if(textureInfo.isAnimatedImageFormat)
1436     {
1437       observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::ANIMATED_IMAGE_TEXTURE, textureInfo.textureId, textureSet, textureInfo.frameCount, textureInfo.frameInterval));
1438     }
1439     else
1440     {
1441       observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::TEXTURE, textureInfo.textureId, textureSet, (textureInfo.useAtlas == UseAtlas::USE_ATLAS) ? true : false, textureInfo.atlasRect, textureInfo.preMultiplied));
1442     }
1443   }
1444 }
1445
1446 TextureSet TextureManager::GetTextureSet(const TextureManager::TextureId& textureId)
1447 {
1448   TextureSet                textureSet;
1449   TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
1450   if(loadState == TextureManager::LoadState::UPLOADED)
1451   {
1452     // LoadComplete has already been called - keep the same texture set
1453     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1454     if(textureCacheIndex != INVALID_CACHE_INDEX)
1455     {
1456       TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
1457       textureSet = GetTextureSet(textureInfo);
1458     }
1459   }
1460   else
1461   {
1462     DALI_LOG_ERROR("GetTextureSet is failed. texture is not uploaded \n");
1463   }
1464   return textureSet;
1465 }
1466
1467 TextureSet TextureManager::GetTextureSet(const TextureManager::TextureInfo& textureInfo)
1468 {
1469   TextureSet textureSet;
1470
1471   // LoadComplete has already been called - keep the same texture set
1472   textureSet = TextureSet::New();
1473   if(!textureInfo.textures.empty())
1474   {
1475     if(textureInfo.textures.size() > 1) // For YUV case
1476     {
1477       uint32_t index = 0u;
1478       for(auto&& texture : textureInfo.textures)
1479       {
1480         textureSet.SetTexture(index++, texture);
1481       }
1482     }
1483     else
1484     {
1485       textureSet.SetTexture(TEXTURE_INDEX, textureInfo.textures[0]);
1486       TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1487       if(maskCacheIndex != INVALID_CACHE_INDEX)
1488       {
1489         TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1490         if(maskTextureInfo.storageType == StorageType::UPLOAD_TO_TEXTURE || maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1491         {
1492           if(!maskTextureInfo.textures.empty())
1493           {
1494             textureSet.SetTexture(MASK_TEXTURE_INDEX, maskTextureInfo.textures[0]);
1495           }
1496         }
1497       }
1498     }
1499   }
1500   return textureSet;
1501 }
1502
1503 void TextureManager::RemoveTextureObserver(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
1504 {
1505   // Remove its observer
1506   if(observer)
1507   {
1508     const auto iterEnd = textureInfo.observerList.End();
1509     const auto iter    = std::find(textureInfo.observerList.Begin(), iterEnd, observer);
1510     if(iter != iterEnd)
1511     {
1512       // Disconnect and remove the observer.
1513       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1514       observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1515       textureInfo.observerList.Erase(iter);
1516     }
1517   }
1518 }
1519
1520 } // namespace Internal
1521
1522 } // namespace Toolkit
1523
1524 } // namespace Dali