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

   1 /*
   2  * Copyright (c) 2023 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali-toolkit/internal/texture-manager/texture-manager-impl.h>
  20
  21 // EXTERNAL HEADERS
  22 #include <dali/devel-api/adaptor-framework/environment-variable.h>
  23 #include <dali/devel-api/adaptor-framework/image-loading.h>
  24 #include <dali/devel-api/adaptor-framework/pixel-buffer.h>
  25 #include <dali/integration-api/adaptor-framework/adaptor.h>
  26 #include <dali/integration-api/debug.h>
  27 #include <dali/public-api/rendering/geometry.h>
  28
  29 // INTERNAL HEADERS
  30 #include <dali-toolkit/internal/texture-manager/texture-async-loading-helper.h>
  31 #include <dali-toolkit/internal/texture-manager/texture-cache-manager.h>
  32 #include <dali-toolkit/internal/visuals/image-atlas-manager.h>
  33 #include <dali-toolkit/internal/visuals/rendering-addon.h>
  34
  35 namespace
  36 {
  37 constexpr auto INITIAL_HASH_NUMBER = size_t{0u};
  38
  39 constexpr auto TEXTURE_INDEX      = 0u; ///< The Index for texture
  40 constexpr auto MASK_TEXTURE_INDEX = 1u; ///< The Index for mask texture
  41
  42 constexpr auto NUMBER_OF_LOCAL_LOADER_THREADS_ENV  = "DALI_TEXTURE_LOCAL_THREADS";
  43 constexpr auto NUMBER_OF_REMOTE_LOADER_THREADS_ENV = "DALI_TEXTURE_REMOTE_THREADS";
  44 constexpr auto LOAD_IMAGE_YUV_PLANES_ENV           = "DALI_LOAD_IMAGE_YUV_PLANES";
  45
  46 bool NeedToLoadYuvPlanes()
  47 {
  48   auto loadYuvPlanesString = Dali::EnvironmentVariable::GetEnvironmentVariable(LOAD_IMAGE_YUV_PLANES_ENV);
  49   bool loadYuvPlanes       = loadYuvPlanesString ? std::atoi(loadYuvPlanesString) : false;
  50   return loadYuvPlanes;
  51 }
  52 } // namespace
  53
  54 namespace Dali
  55 {
  56 namespace Toolkit
  57 {
  58 namespace Internal
  59 {
  60 #ifdef DEBUG_ENABLED
  61 // Define logfilter Internal namespace level so other files (e.g. texture-cache-manager.cpp) can also use this filter.
  62 Debug::Filter* gTextureManagerLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_TEXTURE_MANAGER");
  63
  64 // clang-format off
  65 #define GET_LOAD_STATE_STRING(loadState) \
  66   loadState == TextureManagerType::LoadState::NOT_STARTED      ? "NOT_STARTED"      : \
  67   loadState == TextureManagerType::LoadState::LOADING          ? "LOADING"          : \
  68   loadState == TextureManagerType::LoadState::LOAD_FINISHED    ? "LOAD_FINISHED"    : \
  69   loadState == TextureManagerType::LoadState::WAITING_FOR_MASK ? "WAITING_FOR_MASK" : \
  70   loadState == TextureManagerType::LoadState::MASK_APPLYING    ? "MASK_APPLYING"    : \
  71   loadState == TextureManagerType::LoadState::MASK_APPLIED     ? "MASK_APPLIED"     : \
  72   loadState == TextureManagerType::LoadState::UPLOADED         ? "UPLOADED"         : \
  73   loadState == TextureManagerType::LoadState::CANCELLED        ? "CANCELLED"        : \
  74   loadState == TextureManagerType::LoadState::MASK_CANCELLED   ? "MASK_CANCELLED"   : \
  75   loadState == TextureManagerType::LoadState::LOAD_FAILED      ? "LOAD_FAILED"      : \
  76                                                                  "Unknown"
  77 // clang-format on
  78 #endif
  79
  80 namespace
  81 {
  82 const uint32_t DEFAULT_ATLAS_SIZE(1024u);               ///< This size can fit 8 by 8 images of average size 128 * 128
  83 const Vector4  FULL_ATLAS_RECT(0.0f, 0.0f, 1.0f, 1.0f); ///< UV Rectangle that covers the full Texture
  84
  85 void PreMultiply(Devel::PixelBuffer pixelBuffer, TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
  86 {
  87   if(Pixel::HasAlpha(pixelBuffer.GetPixelFormat()))
  88   {
  89     if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
  90     {
  91       pixelBuffer.MultiplyColorByAlpha();
  92     }
  93   }
  94   else
  95   {
  96     preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
  97   }
  98 }
  99
 100 } // Anonymous namespace
 101
 102 TextureManager::MaskingData::MaskingData()
 103 : mAlphaMaskUrl(),
 104   mAlphaMaskId(INVALID_TEXTURE_ID),
 105   mContentScaleFactor(1.0f),
 106   mCropToMask(true),
 107   mPreappliedMasking(true),
 108   mMaskImageLoadingFailed(false)
 109 {
 110 }
 111
 112 TextureManager::TextureManager()
 113 : mTextureCacheManager(),
 114   mAsyncLoader(std::unique_ptr<TextureAsyncLoadingHelper>(new TextureAsyncLoadingHelper(*this))),
 115   mLifecycleObservers(),
 116   mLoadQueue(),
 117   mLoadingQueueTextureId(INVALID_TEXTURE_ID),
 118   mRemoveQueue(),
 119   mLoadYuvPlanes(NeedToLoadYuvPlanes()),
 120   mRemoveProcessorRegistered(false)
 121 {
 122   // Initialize the AddOn
 123   RenderingAddOn::Get();
 124 }
 125
 126 TextureManager::~TextureManager()
 127 {
 128   if(mRemoveProcessorRegistered && Adaptor::IsAvailable())
 129   {
 130     Adaptor::Get().UnregisterProcessor(*this, true);
 131     mRemoveProcessorRegistered = false;
 132   }
 133
 134   for(auto iter = mLifecycleObservers.Begin(), endIter = mLifecycleObservers.End(); iter != endIter; ++iter)
 135   {
 136     (*iter)->TextureManagerDestroyed();
 137   }
 138 }
 139
 140 TextureSet TextureManager::LoadAnimatedImageTexture(
 141   const VisualUrl&                url,
 142   Dali::AnimatedImageLoading      animatedImageLoading,
 143   const uint32_t&                 frameIndex,
 144   TextureManager::TextureId&      textureId,
 145   MaskingDataPointer&             maskInfo,
 146   const Dali::ImageDimensions&    desiredSize,
 147   const Dali::FittingMode::Type&  fittingMode,
 148   const Dali::SamplingMode::Type& samplingMode,
 149   const bool&                     synchronousLoading,
 150   TextureUploadObserver*          textureObserver,
 151   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 152 {
 153   TextureSet textureSet;
 154
 155   if(synchronousLoading)
 156   {
 157     Devel::PixelBuffer pixelBuffer;
 158     if(animatedImageLoading)
 159     {
 160       pixelBuffer = animatedImageLoading.LoadFrame(frameIndex, desiredSize, fittingMode, samplingMode);
 161     }
 162     if(!pixelBuffer)
 163     {
 164       DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous loading is failed\n");
 165     }
 166     else
 167     {
 168       Texture maskTexture;
 169       if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 170       {
 171         Devel::PixelBuffer maskPixelBuffer = LoadImageFromFile(maskInfo->mAlphaMaskUrl.GetUrl(), desiredSize, fittingMode, samplingMode, true);
 172         if(maskPixelBuffer)
 173         {
 174           if(!maskInfo->mPreappliedMasking)
 175           {
 176             PixelData maskPixelData = Devel::PixelBuffer::Convert(maskPixelBuffer); // takes ownership of buffer
 177             maskTexture             = Texture::New(Dali::TextureType::TEXTURE_2D, maskPixelData.GetPixelFormat(), maskPixelData.GetWidth(), maskPixelData.GetHeight());
 178             maskTexture.Upload(maskPixelData);
 179           }
 180           else
 181           {
 182             pixelBuffer.ApplyMask(maskPixelBuffer, maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 183           }
 184         }
 185         else
 186         {
 187           DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous mask image loading is failed\n");
 188         }
 189       }
 190
 191       if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 192       {
 193         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 194       }
 195
 196       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer); // takes ownership of buffer
 197       if(!textureSet)
 198       {
 199         Texture texture = Texture::New(Dali::TextureType::TEXTURE_2D, pixelData.GetPixelFormat(), pixelData.GetWidth(), pixelData.GetHeight());
 200         texture.Upload(pixelData);
 201         textureSet = TextureSet::New();
 202         textureSet.SetTexture(TEXTURE_INDEX, texture);
 203         if(maskTexture)
 204         {
 205           textureSet.SetTexture(MASK_TEXTURE_INDEX, maskTexture);
 206         }
 207       }
 208     }
 209   }
 210   else
 211   {
 212     TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 213     float     contentScaleFactor = 1.0f;
 214     bool      cropToMask         = false;
 215     if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 216     {
 217       maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? StorageType::KEEP_PIXEL_BUFFER : StorageType::KEEP_TEXTURE);
 218       alphaMaskId            = maskInfo->mAlphaMaskId;
 219       if(maskInfo->mPreappliedMasking)
 220       {
 221         contentScaleFactor = maskInfo->mContentScaleFactor;
 222         cropToMask         = maskInfo->mCropToMask;
 223       }
 224     }
 225
 226     textureId = RequestLoadInternal(url, alphaMaskId, contentScaleFactor, desiredSize, fittingMode, samplingMode, UseAtlas::NO_ATLAS, cropToMask, StorageType::UPLOAD_TO_TEXTURE, textureObserver, true, TextureManager::ReloadPolicy::CACHED, preMultiplyOnLoad, animatedImageLoading, frameIndex, false);
 227
 228     TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 229     if(loadState == TextureManager::LoadState::UPLOADED)
 230     {
 231       // LoadComplete has already been called - keep the same texture set
 232       textureSet = GetTextureSet(textureId);
 233     }
 234   }
 235
 236   return textureSet;
 237 }
 238
 239 Devel::PixelBuffer TextureManager::LoadPixelBuffer(
 240   const VisualUrl&                url,
 241   const Dali::ImageDimensions&    desiredSize,
 242   const Dali::FittingMode::Type&  fittingMode,
 243   const Dali::SamplingMode::Type& samplingMode,
 244   const bool&                     synchronousLoading,
 245   TextureUploadObserver*          textureObserver,
 246   const bool&                     orientationCorrection,
 247   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 248 {
 249   Devel::PixelBuffer pixelBuffer;
 250   if(synchronousLoading)
 251   {
 252     if(url.IsValid())
 253     {
 254       if(url.IsBufferResource())
 255       {
 256         const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 257         if(encodedImageBuffer)
 258         {
 259           pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 260         }
 261       }
 262       else
 263       {
 264         pixelBuffer = LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 265       }
 266       if(pixelBuffer && preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 267       {
 268         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 269       }
 270     }
 271   }
 272   else
 273   {
 274     RequestLoadInternal(url, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, UseAtlas::NO_ATLAS, false, StorageType::RETURN_PIXEL_BUFFER, textureObserver, orientationCorrection, TextureManager::ReloadPolicy::FORCED, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, false);
 275   }
 276
 277   return pixelBuffer;
 278 }
 279
 280 TextureSet TextureManager::LoadTexture(
 281   const VisualUrl&                    url,
 282   const Dali::ImageDimensions&        desiredSize,
 283   const Dali::FittingMode::Type&      fittingMode,
 284   const Dali::SamplingMode::Type&     samplingMode,
 285   MaskingDataPointer&                 maskInfo,
 286   const bool&                         synchronousLoading,
 287   TextureManager::TextureId&          textureId,
 288   Vector4&                            textureRect,
 289   Dali::ImageDimensions&              textureRectSize,
 290   bool&                               atlasingStatus,
 291   bool&                               loadingStatus,
 292   TextureUploadObserver*              textureObserver,
 293   AtlasUploadObserver*                atlasObserver,
 294   ImageAtlasManagerPtr                imageAtlasManager,
 295   const bool&                         orientationCorrection,
 296   const TextureManager::ReloadPolicy& reloadPolicy,
 297   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad)
 298 {
 299   TextureSet textureSet;
 300
 301   loadingStatus = false;
 302   textureRect   = FULL_ATLAS_RECT;
 303
 304   if(VisualUrl::TEXTURE == url.GetProtocolType())
 305   {
 306     std::string location = url.GetLocation();
 307     if(location.size() > 0u)
 308     {
 309       TextureId id                  = std::stoi(location);
 310       auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
 311       if(externalTextureInfo.textureSet)
 312       {
 313         textureId = id;
 314
 315         if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 316         {
 317           // Change preMultiplyOnLoad value so make caller determine to preMultiplyAlpha or not.
 318           // TODO : Should we seperate input and output value?
 319           preMultiplyOnLoad = externalTextureInfo.preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 320         }
 321
 322         TextureId alphaMaskId = INVALID_TEXTURE_ID;
 323         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 324         {
 325           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, StorageType::KEEP_TEXTURE, synchronousLoading);
 326           alphaMaskId            = maskInfo->mAlphaMaskId;
 327           textureId              = RequestLoad(url, alphaMaskId, 1.0f, desiredSize, fittingMode, samplingMode, UseAtlas::NO_ATLAS, false, textureObserver, orientationCorrection, reloadPolicy, preMultiplyOnLoad, synchronousLoading);
 328
 329           TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 330           if(loadState == TextureManager::LoadState::UPLOADED)
 331           {
 332             textureSet = GetTextureSet(textureId);
 333           }
 334         }
 335         else
 336         {
 337           textureSet = TextureSet::New();
 338           textureSet.SetTexture(TEXTURE_INDEX, externalTextureInfo.textureSet.GetTexture(TEXTURE_INDEX));
 339         }
 340       }
 341     }
 342   }
 343   else
 344   {
 345     // For Atlas
 346     if(synchronousLoading && atlasingStatus)
 347     {
 348       const bool synchronousAtlasAvaliable = (desiredSize != ImageDimensions() || url.IsLocalResource()) ? imageAtlasManager->CheckAtlasAvailable(url, desiredSize)
 349                                                                                                          : false;
 350       if(synchronousAtlasAvaliable)
 351       {
 352         std::vector<Devel::PixelBuffer> pixelBuffers;
 353         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, false, pixelBuffers);
 354
 355         if(!pixelBuffers.empty() && maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 356         {
 357           std::vector<Devel::PixelBuffer> maskPixelBuffers;
 358           LoadImageSynchronously(maskInfo->mAlphaMaskUrl, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, true, false, maskPixelBuffers);
 359           if(!maskPixelBuffers.empty())
 360           {
 361             pixelBuffers[0].ApplyMask(maskPixelBuffers[0], maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 362           }
 363         }
 364
 365         PixelData data;
 366         if(!pixelBuffers.empty())
 367         {
 368           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 369           data = Devel::PixelBuffer::Convert(pixelBuffers[0]); // takes ownership of buffer
 370
 371           if(data)
 372           {
 373             textureSet = imageAtlasManager->Add(textureRect, data);
 374             if(textureSet)
 375             {
 376               textureRectSize.SetWidth(data.GetWidth());
 377               textureRectSize.SetHeight(data.GetHeight());
 378             }
 379           }
 380           else
 381           {
 382             DALI_LOG_ERROR("TextureManager::LoadTexture: Synchronous Texture loading with atlasing is failed.\n");
 383           }
 384         }
 385         if(!textureSet)
 386         {
 387           atlasingStatus = false;
 388         }
 389       }
 390     }
 391
 392     if(!textureSet)
 393     {
 394       loadingStatus = true;
 395       // Atlas manager can chage desired size when it is set by 0,0.
 396       // We should store into textureRectSize only if atlasing successed.
 397       // So copy inputed desiredSize, and replace value into textureRectSize only if atlasing success.
 398       Dali::ImageDimensions atlasDesiredSize = desiredSize;
 399       if(atlasingStatus)
 400       {
 401         if(url.IsBufferResource())
 402         {
 403           const EncodedImageBuffer& encodedImageBuffer = GetEncodedImageBuffer(url.GetUrl());
 404           if(encodedImageBuffer)
 405           {
 406             textureSet = imageAtlasManager->Add(textureRect, encodedImageBuffer, desiredSize, fittingMode, true, atlasObserver);
 407           }
 408         }
 409         else
 410         {
 411           textureSet = imageAtlasManager->Add(textureRect, url, atlasDesiredSize, fittingMode, true, atlasObserver);
 412         }
 413       }
 414       if(!textureSet) // big image, no atlasing or atlasing failed
 415       {
 416         atlasingStatus = false;
 417
 418         TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 419         float     contentScaleFactor = 1.0f;
 420         bool      cropToMask         = false;
 421         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 422         {
 423           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? StorageType::KEEP_PIXEL_BUFFER : StorageType::KEEP_TEXTURE, synchronousLoading);
 424           alphaMaskId            = maskInfo->mAlphaMaskId;
 425           if(maskInfo && maskInfo->mPreappliedMasking)
 426           {
 427             contentScaleFactor = maskInfo->mContentScaleFactor;
 428             cropToMask         = maskInfo->mCropToMask;
 429           }
 430         }
 431
 432         textureId = RequestLoad(
 433           url,
 434           alphaMaskId,
 435           contentScaleFactor,
 436           desiredSize,
 437           fittingMode,
 438           samplingMode,
 439           UseAtlas::NO_ATLAS,
 440           cropToMask,
 441           textureObserver,
 442           orientationCorrection,
 443           reloadPolicy,
 444           preMultiplyOnLoad,
 445           synchronousLoading);
 446
 447         TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 448         if(loadState == TextureManager::LoadState::UPLOADED)
 449         {
 450           // LoadComplete has already been called - keep the same texture set
 451           textureSet = GetTextureSet(textureId);
 452         }
 453
 454         // If we are loading the texture, or waiting for the ready signal handler to complete, inform
 455         // caller that they need to wait.
 456         loadingStatus = (loadState == TextureManager::LoadState::LOADING ||
 457                          loadState == TextureManager::LoadState::WAITING_FOR_MASK ||
 458                          loadState == TextureManager::LoadState::MASK_APPLYING ||
 459                          loadState == TextureManager::LoadState::MASK_APPLIED ||
 460                          loadState == TextureManager::LoadState::NOT_STARTED ||
 461                          mLoadingQueueTextureId != INVALID_TEXTURE_ID);
 462       }
 463       else
 464       {
 465         textureRectSize = atlasDesiredSize;
 466       }
 467     }
 468   }
 469
 470   if(synchronousLoading)
 471   {
 472     loadingStatus = false;
 473   }
 474
 475   return textureSet;
 476 }
 477
 478 TextureManager::TextureId TextureManager::RequestLoad(
 479   const VisualUrl&                    url,
 480   const ImageDimensions&              desiredSize,
 481   const Dali::FittingMode::Type&      fittingMode,
 482   const Dali::SamplingMode::Type&     samplingMode,
 483   const UseAtlas&                     useAtlas,
 484   TextureUploadObserver*              observer,
 485   const bool&                         orientationCorrection,
 486   const TextureManager::ReloadPolicy& reloadPolicy,
 487   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 488   const bool&                         synchronousLoading)
 489 {
 490   return RequestLoadInternal(url, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, useAtlas, false, StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 491 }
 492
 493 TextureManager::TextureId TextureManager::RequestLoad(
 494   const VisualUrl&                    url,
 495   const TextureManager::TextureId&    maskTextureId,
 496   const float&                        contentScale,
 497   const Dali::ImageDimensions&        desiredSize,
 498   const Dali::FittingMode::Type&      fittingMode,
 499   const Dali::SamplingMode::Type&     samplingMode,
 500   const TextureManager::UseAtlas&     useAtlas,
 501   const bool&                         cropToMask,
 502   TextureUploadObserver*              observer,
 503   const bool&                         orientationCorrection,
 504   const TextureManager::ReloadPolicy& reloadPolicy,
 505   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 506   const bool&                         synchronousLoading)
 507 {
 508   return RequestLoadInternal(url, maskTextureId, contentScale, desiredSize, fittingMode, samplingMode, useAtlas, cropToMask, StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 509 }
 510
 511 TextureManager::TextureId TextureManager::RequestMaskLoad(
 512   const VisualUrl& maskUrl,
 513   StorageType      storageType,
 514   const bool&      synchronousLoading)
 515 {
 516   // Use the normal load procedure to get the alpha mask.
 517   auto preMultiply = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 518   return RequestLoadInternal(maskUrl, 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);
 519 }
 520
 521 TextureManager::TextureId TextureManager::RequestLoadInternal(
 522   const VisualUrl&                    url,
 523   const TextureManager::TextureId&    maskTextureId,
 524   const float&                        contentScale,
 525   const Dali::ImageDimensions&        desiredSize,
 526   const Dali::FittingMode::Type&      fittingMode,
 527   const Dali::SamplingMode::Type&     samplingMode,
 528   const TextureManager::UseAtlas&     useAtlas,
 529   const bool&                         cropToMask,
 530   const TextureManager::StorageType&  storageType,
 531   TextureUploadObserver*              observer,
 532   const bool&                         orientationCorrection,
 533   const TextureManager::ReloadPolicy& reloadPolicy,
 534   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 535   Dali::AnimatedImageLoading          animatedImageLoading,
 536   const std::uint32_t&                frameIndex,
 537   const bool&                         synchronousLoading)
 538 {
 539   TextureHash       textureHash   = INITIAL_HASH_NUMBER;
 540   TextureCacheIndex cacheIndex    = INVALID_CACHE_INDEX;
 541   bool              loadYuvPlanes = (mLoadYuvPlanes && maskTextureId == INVALID_TEXTURE_ID && storageType == StorageType::UPLOAD_TO_TEXTURE);
 542
 543   if(storageType != StorageType::RETURN_PIXEL_BUFFER)
 544   {
 545     textureHash = mTextureCacheManager.GenerateHash(url, desiredSize, fittingMode, samplingMode, useAtlas, maskTextureId, cropToMask, frameIndex);
 546
 547     // Look up the texture by hash. Note: The extra parameters are used in case of a hash collision.
 548     cacheIndex = mTextureCacheManager.FindCachedTexture(textureHash, url, desiredSize, fittingMode, samplingMode, useAtlas, storageType, maskTextureId, cropToMask, preMultiplyOnLoad, (animatedImageLoading) ? true : false, frameIndex);
 549   }
 550
 551   TextureManager::TextureId textureId = INVALID_TEXTURE_ID;
 552   // Check if the requested Texture exists in the cache.
 553   if(cacheIndex != INVALID_CACHE_INDEX)
 554   {
 555     if(TextureManager::ReloadPolicy::CACHED == reloadPolicy)
 556     {
 557       // Mark this texture being used by another client resource. Forced reload would replace the current texture
 558       // without the need for incrementing the reference count.
 559       ++(mTextureCacheManager[cacheIndex].referenceCount);
 560     }
 561     textureId = mTextureCacheManager[cacheIndex].textureId;
 562
 563     // Update preMultiplyOnLoad value. It should be changed according to preMultiplied value of the cached info.
 564     preMultiplyOnLoad = mTextureCacheManager[cacheIndex].preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 565     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) Using cached texture id@%d, textureId=%d, maskTextureId=%d, frameindex=%d, premultiplied=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, maskTextureId, frameIndex, mTextureCacheManager[cacheIndex].preMultiplied ? 1 : 0);
 566   }
 567
 568   if(textureId == INVALID_TEXTURE_ID) // There was no caching, or caching not required
 569   {
 570     textureId = mTextureCacheManager.GenerateTextureId();
 571
 572     bool preMultiply = (preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 573
 574     // Cache new texutre, and get cacheIndex.
 575     cacheIndex = mTextureCacheManager.AppendCache(TextureInfo(textureId, maskTextureId, url, desiredSize, contentScale, fittingMode, samplingMode, false, cropToMask, useAtlas, textureHash, orientationCorrection, preMultiply, animatedImageLoading, frameIndex, loadYuvPlanes));
 576     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);
 577   }
 578
 579   // The below code path is common whether we are using the cache or not.
 580   // The textureInfoIndex now refers to either a pre-existing cached TextureInfo,
 581   // or a new TextureInfo just created.
 582   TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 583   textureInfo.maskTextureId         = maskTextureId;
 584   textureInfo.storageType           = storageType;
 585   textureInfo.orientationCorrection = orientationCorrection;
 586
 587   // the case using external texture has already been loaded texture, so change its status to WAITING_FOR_MASK.
 588   if(url.GetProtocolType() == VisualUrl::TEXTURE)
 589   {
 590     if(textureInfo.loadState != LoadState::UPLOADED)
 591     {
 592       textureInfo.loadState = TextureManager::LoadState::WAITING_FOR_MASK;
 593     }
 594   }
 595
 596   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureInfo loadState:%s\n", GET_LOAD_STATE_STRING(textureInfo.loadState));
 597
 598   // Force reloading of texture by setting loadState unless already loading or cancelled.
 599   if(TextureManager::ReloadPolicy::FORCED == reloadPolicy &&
 600      TextureManager::LoadState::LOADING != textureInfo.loadState &&
 601      TextureManager::LoadState::WAITING_FOR_MASK != textureInfo.loadState &&
 602      TextureManager::LoadState::MASK_APPLYING != textureInfo.loadState &&
 603      TextureManager::LoadState::MASK_APPLIED != textureInfo.loadState &&
 604      TextureManager::LoadState::CANCELLED != textureInfo.loadState &&
 605      TextureManager::LoadState::MASK_CANCELLED != textureInfo.loadState)
 606   {
 607     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "TextureManager::RequestLoad( url=%s observer=%p ) ForcedReload cacheIndex:%d, textureId=%d, maskTextureId=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, maskTextureId);
 608     textureInfo.loadState = TextureManager::LoadState::NOT_STARTED;
 609   }
 610
 611   if(!synchronousLoading)
 612   {
 613     // Check if we should add the observer.
 614     // Only do this if we have not loaded yet and it will not have loaded by the end of this method.
 615     switch(textureInfo.loadState)
 616     {
 617       case TextureManager::LoadState::LOAD_FAILED: // Failed notifies observer which then stops observing.
 618       case TextureManager::LoadState::NOT_STARTED:
 619       {
 620         LoadOrQueueTexture(textureInfo, observer); // If called inside NotifyObservers, queues until afterwards
 621         break;
 622       }
 623       case TextureManager::LoadState::LOADING:
 624       case TextureManager::LoadState::WAITING_FOR_MASK:
 625       case TextureManager::LoadState::MASK_APPLYING:
 626       case TextureManager::LoadState::MASK_APPLIED:
 627       {
 628         // Do not observe even we reload forced when texture is already loading state.
 629         if(TextureManager::ReloadPolicy::FORCED != reloadPolicy)
 630         {
 631           ObserveTexture(textureInfo, observer);
 632         }
 633         break;
 634       }
 635       case TextureManager::LoadState::UPLOADED:
 636       {
 637         if(observer)
 638         {
 639           LoadOrQueueTexture(textureInfo, observer);
 640         }
 641         break;
 642       }
 643       case TextureManager::LoadState::CANCELLED:
 644       {
 645         // A cancelled texture hasn't finished loading yet. Treat as a loading texture
 646         // (it's ref count has already been incremented, above)
 647         textureInfo.loadState = TextureManager::LoadState::LOADING;
 648         ObserveTexture(textureInfo, observer);
 649         break;
 650       }
 651       case TextureManager::LoadState::MASK_CANCELLED:
 652       {
 653         // A cancelled texture hasn't finished mask applying yet. Treat as a mask applying texture
 654         // (it's ref count has already been incremented, above)
 655         textureInfo.loadState = TextureManager::LoadState::MASK_APPLYING;
 656         ObserveTexture(textureInfo, observer);
 657         break;
 658       }
 659       case TextureManager::LoadState::LOAD_FINISHED:
 660       {
 661         // Loading has already completed.
 662         if(observer && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
 663         {
 664           LoadOrQueueTexture(textureInfo, observer);
 665         }
 666         break;
 667       }
 668     }
 669   }
 670   else
 671   {
 672     // If the image is already finished to load, use cached texture.
 673     // We don't need to consider Observer because this is synchronous loading.
 674     if(!(textureInfo.loadState == TextureManager::LoadState::UPLOADED ||
 675          textureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED))
 676     {
 677       if(url.GetProtocolType() == VisualUrl::TEXTURE)
 678       {
 679         // Get external textureSet from cacheManager.
 680         std::string location = textureInfo.url.GetLocation();
 681         if(!location.empty())
 682         {
 683           TextureId id                  = std::stoi(location);
 684           auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
 685           textureInfo.textures.push_back(externalTextureInfo.textureSet.GetTexture(0));
 686           textureInfo.loadState = LoadState::UPLOADED;
 687         }
 688       }
 689       else
 690       {
 691         std::vector<Devel::PixelBuffer> pixelBuffers;
 692         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, loadYuvPlanes, pixelBuffers);
 693
 694         if(pixelBuffers.empty())
 695         {
 696           // If pixelBuffer loading is failed in synchronously, call RequestRemove() method.
 697           RequestRemove(textureId, nullptr);
 698           return INVALID_TEXTURE_ID;
 699         }
 700
 701         if(storageType == StorageType::KEEP_PIXEL_BUFFER) // For the mask image loading.
 702         {
 703           textureInfo.pixelBuffer = pixelBuffers[0]; // Store the pixel data
 704           textureInfo.loadState   = LoadState::LOAD_FINISHED;
 705         }
 706         else // For the image loading.
 707         {
 708           Texture maskTexture;
 709           if(maskTextureId != INVALID_TEXTURE_ID)
 710           {
 711             TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 712             if(maskCacheIndex != INVALID_CACHE_INDEX)
 713             {
 714               if(mTextureCacheManager[maskCacheIndex].storageType == StorageType::KEEP_PIXEL_BUFFER)
 715               {
 716                 Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
 717                 if(maskPixelBuffer)
 718                 {
 719                   pixelBuffers[0].ApplyMask(maskPixelBuffer, contentScale, cropToMask);
 720                 }
 721                 else
 722                 {
 723                   DALI_LOG_ERROR("Mask image cached invalid pixel buffer!\n");
 724                 }
 725               }
 726             }
 727             else
 728             {
 729               DALI_LOG_ERROR("Mask image is not stored in cache.\n");
 730             }
 731           }
 732           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 733
 734           // Upload texture
 735           UploadTextures(pixelBuffers, textureInfo);
 736         }
 737       }
 738     }
 739   }
 740
 741   return textureId;
 742 }
 743
 744 void TextureManager::RequestRemove(const TextureManager::TextureId& textureId, TextureUploadObserver* observer)
 745 {
 746   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestRemove( textureId=%d observer=%p )\n", textureId, observer);
 747
 748   // Queue to remove.
 749   if(textureId != INVALID_TEXTURE_ID)
 750   {
 751     if(observer)
 752     {
 753       // Remove observer from cached texture info
 754       TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 755       if(textureCacheIndex != INVALID_CACHE_INDEX)
 756       {
 757         TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
 758         RemoveTextureObserver(textureInfo, observer);
 759       }
 760     }
 761     mRemoveQueue.PushBack(textureId);
 762
 763     if(!mRemoveProcessorRegistered && Adaptor::IsAvailable())
 764     {
 765       mRemoveProcessorRegistered = true;
 766       Adaptor::Get().RegisterProcessor(*this, true);
 767     }
 768   }
 769 }
 770
 771 void TextureManager::Remove(const TextureManager::TextureId& textureId)
 772 {
 773   if(textureId != INVALID_TEXTURE_ID)
 774   {
 775     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 776     if(textureCacheIndex != INVALID_CACHE_INDEX)
 777     {
 778       TextureManager::TextureId maskTextureId = INVALID_TEXTURE_ID;
 779       TextureInfo&              textureInfo(mTextureCacheManager[textureCacheIndex]);
 780       // We only need to consider maskTextureId when texture's loadState is not cancelled. Because it is already deleted.
 781       if(textureInfo.loadState != LoadState::CANCELLED && textureInfo.loadState != LoadState::MASK_CANCELLED)
 782       {
 783         if(textureInfo.maskTextureId != INVALID_TEXTURE_ID)
 784         {
 785           maskTextureId = textureInfo.maskTextureId;
 786         }
 787       }
 788
 789       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));
 790
 791       // Remove textureId in CacheManager. Now, textureInfo is invalidate.
 792       mTextureCacheManager.RemoveCache(textureInfo);
 793
 794       // Remove maskTextureId in CacheManager
 795       if(maskTextureId != INVALID_TEXTURE_ID)
 796       {
 797         TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 798         if(maskCacheIndex != INVALID_CACHE_INDEX)
 799         {
 800           TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
 801
 802           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));
 803
 804           mTextureCacheManager.RemoveCache(maskTextureInfo);
 805         }
 806       }
 807     }
 808   }
 809 }
 810
 811 void TextureManager::ProcessRemoveQueue()
 812 {
 813   // Note that RemoveQueue is not be changed during Remove().
 814   for(auto&& textureId : mRemoveQueue)
 815   {
 816     if(textureId != INVALID_TEXTURE_ID)
 817     {
 818       Remove(textureId);
 819     }
 820   }
 821   mRemoveQueue.Clear();
 822 }
 823
 824 void TextureManager::Process(bool postProcessor)
 825 {
 826   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::Process()\n");
 827
 828   ProcessRemoveQueue();
 829
 830   if(Adaptor::IsAvailable())
 831   {
 832     Adaptor::Get().UnregisterProcessor(*this, true);
 833     mRemoveProcessorRegistered = false;
 834   }
 835 }
 836
 837 void TextureManager::LoadImageSynchronously(
 838   const VisualUrl&                 url,
 839   const Dali::ImageDimensions&     desiredSize,
 840   const Dali::FittingMode::Type&   fittingMode,
 841   const Dali::SamplingMode::Type&  samplingMode,
 842   const bool&                      orientationCorrection,
 843   const bool&                      loadYuvPlanes,
 844   std::vector<Devel::PixelBuffer>& pixelBuffers)
 845 {
 846   Devel::PixelBuffer pixelBuffer;
 847   if(url.IsBufferResource())
 848   {
 849     const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 850     if(encodedImageBuffer)
 851     {
 852       pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 853     }
 854   }
 855   else
 856   {
 857     if(loadYuvPlanes)
 858     {
 859       Dali::LoadImagePlanesFromFile(url.GetUrl(), pixelBuffers, desiredSize, fittingMode, samplingMode, orientationCorrection);
 860     }
 861     else
 862     {
 863       pixelBuffer = Dali::LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 864     }
 865   }
 866
 867   if(pixelBuffer)
 868   {
 869     pixelBuffers.push_back(pixelBuffer);
 870   }
 871 }
 872
 873 void TextureManager::AddObserver(TextureManager::LifecycleObserver& observer)
 874 {
 875   // make sure an observer doesn't observe the same object twice
 876   // otherwise it will get multiple calls to ObjectDestroyed()
 877   DALI_ASSERT_DEBUG(mLifecycleObservers.End() == std::find(mLifecycleObservers.Begin(), mLifecycleObservers.End(), &observer));
 878   mLifecycleObservers.PushBack(&observer);
 879 }
 880
 881 void TextureManager::RemoveObserver(TextureManager::LifecycleObserver& observer)
 882 {
 883   // Find the observer...
 884   auto endIter = mLifecycleObservers.End();
 885   for(auto iter = mLifecycleObservers.Begin(); iter != endIter; ++iter)
 886   {
 887     if((*iter) == &observer)
 888     {
 889       mLifecycleObservers.Erase(iter);
 890       break;
 891     }
 892   }
 893   DALI_ASSERT_DEBUG(endIter != mLifecycleObservers.End());
 894 }
 895
 896 void TextureManager::LoadOrQueueTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 897 {
 898   switch(textureInfo.loadState)
 899   {
 900     case LoadState::NOT_STARTED:
 901     case LoadState::LOAD_FAILED:
 902     {
 903       if(mLoadingQueueTextureId != INVALID_TEXTURE_ID)
 904       {
 905         QueueLoadTexture(textureInfo, observer);
 906       }
 907       else
 908       {
 909         LoadTexture(textureInfo, observer);
 910       }
 911       break;
 912     }
 913     case LoadState::UPLOADED:
 914     {
 915       if(mLoadingQueueTextureId != INVALID_TEXTURE_ID)
 916       {
 917         QueueLoadTexture(textureInfo, observer);
 918       }
 919       else
 920       {
 921         // The Texture has already loaded. The other observers have already been notified.
 922         // We need to send a "late" loaded notification for this observer.
 923         if(observer)
 924         {
 925           EmitLoadComplete(observer, textureInfo, true);
 926         }
 927       }
 928       break;
 929     }
 930     case LoadState::LOADING:
 931     case LoadState::CANCELLED:
 932     case LoadState::MASK_CANCELLED:
 933     case LoadState::LOAD_FINISHED:
 934     case LoadState::WAITING_FOR_MASK:
 935     case LoadState::MASK_APPLYING:
 936     case LoadState::MASK_APPLIED:
 937     {
 938       break;
 939     }
 940   }
 941 }
 942
 943 void TextureManager::QueueLoadTexture(const TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 944 {
 945   const auto& textureId = textureInfo.textureId;
 946   mLoadQueue.PushBack(QueueElement(textureId, observer));
 947
 948   if(observer)
 949   {
 950     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Connect DestructionSignal to observer:%p\n", observer);
 951     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 952   }
 953 }
 954
 955 void TextureManager::LoadTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 956 {
 957   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::LoadTexture(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
 958   textureInfo.loadState = LoadState::LOADING;
 959   if(!textureInfo.loadSynchronously)
 960   {
 961     auto premultiplyOnLoad = (textureInfo.preMultiplyOnLoad && textureInfo.maskTextureId == INVALID_TEXTURE_ID) ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
 962     if(textureInfo.animatedImageLoading)
 963     {
 964       mAsyncLoader->LoadAnimatedImage(textureInfo.textureId, textureInfo.animatedImageLoading, textureInfo.frameIndex, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, premultiplyOnLoad);
 965     }
 966     else
 967     {
 968       mAsyncLoader->Load(textureInfo.textureId, textureInfo.url, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, textureInfo.orientationCorrection, premultiplyOnLoad, textureInfo.loadYuvPlanes);
 969     }
 970   }
 971   ObserveTexture(textureInfo, observer);
 972 }
 973
 974 void TextureManager::ProcessLoadQueue()
 975 {
 976   for(auto&& element : mLoadQueue)
 977   {
 978     if(element.mTextureId == INVALID_TEXTURE_ID)
 979     {
 980       continue;
 981     }
 982
 983     TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(element.mTextureId);
 984     if(cacheIndex != INVALID_CACHE_INDEX)
 985     {
 986       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 987
 988       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));
 989
 990       if((textureInfo.loadState == LoadState::UPLOADED) || (textureInfo.loadState == LoadState::LOAD_FINISHED && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER))
 991       {
 992         if(element.mObserver)
 993         {
 994           EmitLoadComplete(element.mObserver, textureInfo, true);
 995         }
 996       }
 997       else if(textureInfo.loadState == LoadState::LOADING)
 998       {
 999         // Note : LOADING state texture cannot be queue.
1000         // This case be occured when same texture id are queue in mLoadQueue.
1001         ObserveTexture(textureInfo, element.mObserver);
1002       }
1003       else
1004       {
1005         LoadTexture(textureInfo, element.mObserver);
1006       }
1007     }
1008   }
1009   mLoadQueue.Clear();
1010 }
1011
1012 void TextureManager::ObserveTexture(TextureManager::TextureInfo& textureInfo,
1013                                     TextureUploadObserver*       observer)
1014 {
1015   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ObserveTexture(): url:%s observer:%p\n", textureInfo.url.GetUrl().c_str(), observer);
1016
1017   if(observer)
1018   {
1019     textureInfo.observerList.PushBack(observer);
1020
1021     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Connect DestructionSignal to observer:%p\n", observer);
1022     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
1023   }
1024 }
1025
1026 void TextureManager::AsyncLoadComplete(const TextureManager::TextureId& textureId, std::vector<Devel::PixelBuffer>& pixelBuffers)
1027 {
1028   TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1029   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::AsyncLoadComplete( textureId:%d CacheIndex:%d )\n", textureId, cacheIndex.GetIndex());
1030   if(cacheIndex != INVALID_CACHE_INDEX)
1031   {
1032     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1033
1034     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));
1035     if(textureInfo.loadState != LoadState::CANCELLED && textureInfo.loadState != LoadState::MASK_CANCELLED)
1036     {
1037       // textureInfo can be invalidated after this call (as the mTextureInfoContainer may be modified)
1038       PostLoad(textureInfo, pixelBuffers);
1039     }
1040     else
1041     {
1042       RequestRemove(textureInfo.textureId, nullptr);
1043     }
1044   }
1045 }
1046
1047 void TextureManager::PostLoad(TextureManager::TextureInfo& textureInfo, std::vector<Devel::PixelBuffer>& pixelBuffers)
1048 {
1049   // Was the load successful?
1050   if(!pixelBuffers.empty())
1051   {
1052     if(pixelBuffers.size() == 1)
1053     {
1054       Devel::PixelBuffer pixelBuffer = pixelBuffers[0];
1055       if(pixelBuffer && (pixelBuffer.GetWidth() != 0) && (pixelBuffer.GetHeight() != 0))
1056       {
1057         // No atlas support for now
1058         textureInfo.useAtlas      = UseAtlas::NO_ATLAS;
1059         textureInfo.preMultiplied = pixelBuffer.IsAlphaPreMultiplied();
1060
1061         if(textureInfo.storageType == StorageType::UPLOAD_TO_TEXTURE)
1062         {
1063           // If there is a mask texture ID associated with this texture, then apply the mask
1064           // if it's already loaded. If it hasn't, and the mask is still loading,
1065           // wait for the mask to finish loading.
1066           // note, If the texture is already uploaded synchronously during loading,
1067           // we don't need to apply mask.
1068           if(textureInfo.loadState != LoadState::UPLOADED &&
1069              textureInfo.maskTextureId != INVALID_TEXTURE_ID)
1070           {
1071             if(textureInfo.loadState == LoadState::MASK_APPLYING)
1072             {
1073               textureInfo.loadState = LoadState::MASK_APPLIED;
1074               UploadTextures(pixelBuffers, textureInfo);
1075               NotifyObservers(textureInfo, true);
1076             }
1077             else
1078             {
1079               LoadState maskLoadState = mTextureCacheManager.GetTextureStateInternal(textureInfo.maskTextureId);
1080               textureInfo.pixelBuffer = pixelBuffer; // Store the pixel buffer temporarily
1081               if(maskLoadState == LoadState::LOADING)
1082               {
1083                 textureInfo.loadState = LoadState::WAITING_FOR_MASK;
1084               }
1085               else if(maskLoadState == LoadState::LOAD_FINISHED || maskLoadState == LoadState::UPLOADED)
1086               {
1087                 // Send New Task to Thread
1088                 TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1089                 if(maskCacheIndex != INVALID_CACHE_INDEX)
1090                 {
1091                   TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1092                   if(maskTextureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER)
1093                   {
1094                     // Send New Task to Thread
1095                     ApplyMask(textureInfo, textureInfo.maskTextureId);
1096                   }
1097                   else if(maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1098                   {
1099                     // Upload image texture. textureInfo.loadState will be UPLOADED.
1100                     UploadTextures(pixelBuffers, textureInfo);
1101
1102                     // notify mask texture set.
1103                     NotifyObservers(textureInfo, true);
1104                   }
1105                 }
1106               }
1107               else // maskLoadState == LoadState::LOAD_FAILED
1108               {
1109                 // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1110                 DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1111                 UploadTextures(pixelBuffers, textureInfo);
1112                 NotifyObservers(textureInfo, true);
1113               }
1114             }
1115           }
1116           else
1117           {
1118             UploadTextures(pixelBuffers, textureInfo);
1119             NotifyObservers(textureInfo, true);
1120           }
1121         }
1122         else
1123         {
1124           textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
1125           textureInfo.loadState   = LoadState::LOAD_FINISHED;
1126
1127           if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1128           {
1129             NotifyObservers(textureInfo, true);
1130           }
1131           else // for the StorageType::KEEP_PIXEL_BUFFER and StorageType::KEEP_TEXTURE
1132           {
1133             // Check if there was another texture waiting for this load to complete
1134             // (e.g. if this was an image mask, and its load is on a different thread)
1135             CheckForWaitingTexture(textureInfo);
1136           }
1137         }
1138       }
1139     }
1140     else
1141     {
1142       // YUV case
1143       // No atlas support for now
1144       textureInfo.useAtlas      = UseAtlas::NO_ATLAS;
1145       textureInfo.preMultiplied = false;
1146
1147       UploadTextures(pixelBuffers, textureInfo);
1148       NotifyObservers(textureInfo, true);
1149     }
1150   }
1151   else
1152   {
1153     textureInfo.loadState = LoadState::LOAD_FAILED;
1154     if(textureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER || textureInfo.storageType == StorageType::KEEP_TEXTURE)
1155     {
1156       // Check if there was another texture waiting for this load to complete
1157       // (e.g. if this was an image mask, and its load is on a different thread)
1158       CheckForWaitingTexture(textureInfo);
1159     }
1160     else
1161     {
1162       NotifyObservers(textureInfo, false);
1163     }
1164   }
1165 }
1166
1167 void TextureManager::CheckForWaitingTexture(TextureManager::TextureInfo& maskTextureInfo)
1168 {
1169   if(maskTextureInfo.loadState == LoadState::LOAD_FINISHED &&
1170      maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1171   {
1172     // Upload mask texture. textureInfo.loadState will be UPLOADED.
1173     std::vector<Devel::PixelBuffer> pixelBuffers;
1174     pixelBuffers.push_back(maskTextureInfo.pixelBuffer);
1175     UploadTextures(pixelBuffers, maskTextureInfo);
1176   }
1177
1178   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): maskTextureId=%d, maskTextureUrl=%s\n", maskTextureInfo.textureId, maskTextureInfo.url.GetUrl().c_str());
1179
1180   // Search the cache, checking if any texture has this texture id as a maskTextureId
1181   const std::size_t size = mTextureCacheManager.size();
1182
1183   // Keep notify observer required textureIds.
1184   // Note : NotifyObservers can change mTextureCacheManager cache struct. We should check id's validation before notify.
1185   std::vector<TextureId> notifyRequiredTextureIds;
1186
1187   // TODO : Refactorize here to not iterate whole cached image.
1188   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1189   {
1190     if(mTextureCacheManager[cacheIndex].maskTextureId == maskTextureInfo.textureId &&
1191        mTextureCacheManager[cacheIndex].loadState == LoadState::WAITING_FOR_MASK)
1192     {
1193       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1194
1195       if(maskTextureInfo.loadState == LoadState::LOAD_FINISHED)
1196       {
1197         if(maskTextureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER)
1198         {
1199           // Send New Task to Thread
1200           ApplyMask(textureInfo, maskTextureInfo.textureId);
1201         }
1202       }
1203       else if(maskTextureInfo.loadState == LoadState::UPLOADED)
1204       {
1205         if(maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1206         {
1207           if(textureInfo.url.GetProtocolType() == VisualUrl::TEXTURE)
1208           {
1209             // Get external textureSet from cacheManager.
1210             std::string location = textureInfo.url.GetLocation();
1211             if(!location.empty())
1212             {
1213               TextureId id                  = std::stoi(location);
1214               auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
1215               textureInfo.textures.push_back(externalTextureInfo.textureSet.GetTexture(0));
1216               textureInfo.loadState = LoadState::UPLOADED;
1217             }
1218           }
1219           else
1220           {
1221             // Upload image texture. textureInfo.loadState will be UPLOADED.
1222             std::vector<Devel::PixelBuffer> pixelBuffers;
1223             pixelBuffers.push_back(textureInfo.pixelBuffer);
1224             UploadTextures(pixelBuffers, textureInfo);
1225           }
1226
1227           // Increase reference counts for notify required textureId.
1228           // Now we can assume that we don't remove & re-assign this textureId
1229           // during NotifyObserver signal emit.
1230           maskTextureInfo.referenceCount++;
1231           textureInfo.referenceCount++;
1232
1233           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): Ready to notify textureId=%d\n", textureInfo.textureId);
1234
1235           notifyRequiredTextureIds.push_back(textureInfo.textureId);
1236         }
1237       }
1238       else // maskTextureInfo.loadState == LoadState::LOAD_FAILED
1239       {
1240         // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1241         DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1242         std::vector<Devel::PixelBuffer> pixelBuffers;
1243         pixelBuffers.push_back(textureInfo.pixelBuffer);
1244         UploadTextures(pixelBuffers, textureInfo);
1245
1246         // Increase reference counts for notify required textureId.
1247         // Now we can assume that we don't remove & re-assign this textureId
1248         // during NotifyObserver signal emit.
1249         maskTextureInfo.referenceCount++;
1250         textureInfo.referenceCount++;
1251
1252         DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): Ready to notify textureId=%d\n", textureInfo.textureId);
1253
1254         notifyRequiredTextureIds.push_back(textureInfo.textureId);
1255       }
1256     }
1257   }
1258
1259   // Notify textures are masked
1260   for(const auto textureId : notifyRequiredTextureIds)
1261   {
1262     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1263     if(textureCacheIndex != INVALID_CACHE_INDEX)
1264     {
1265       TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
1266       NotifyObservers(textureInfo, true);
1267     }
1268   }
1269
1270   // Decrease reference count
1271   for(const auto textureId : notifyRequiredTextureIds)
1272   {
1273     RequestRemove(textureId, nullptr);
1274   }
1275 }
1276
1277 void TextureManager::ApplyMask(TextureManager::TextureInfo& textureInfo, const TextureManager::TextureId& maskTextureId)
1278 {
1279   TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
1280   if(maskCacheIndex != INVALID_CACHE_INDEX)
1281   {
1282     Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
1283     Devel::PixelBuffer pixelBuffer     = textureInfo.pixelBuffer;
1284     textureInfo.pixelBuffer.Reset();
1285
1286     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ApplyMask(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
1287
1288     textureInfo.loadState  = LoadState::MASK_APPLYING;
1289     auto premultiplyOnLoad = textureInfo.preMultiplyOnLoad ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
1290     mAsyncLoader->ApplyMask(textureInfo.textureId, pixelBuffer, maskPixelBuffer, textureInfo.scaleFactor, textureInfo.cropToMask, premultiplyOnLoad);
1291   }
1292 }
1293
1294 void TextureManager::UploadTextures(std::vector<Devel::PixelBuffer>& pixelBuffers, TextureManager::TextureInfo& textureInfo)
1295 {
1296   if(!pixelBuffers.empty() && textureInfo.loadState != LoadState::UPLOADED && textureInfo.useAtlas != UseAtlas::USE_ATLAS)
1297   {
1298     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "  TextureManager::UploadTextures() New Texture for textureId:%d\n", textureInfo.textureId);
1299
1300     // Check if this pixelBuffer is premultiplied
1301     textureInfo.preMultiplied = pixelBuffers[0].IsAlphaPreMultiplied();
1302
1303     auto& renderingAddOn = RenderingAddOn::Get();
1304     if(renderingAddOn.IsValid())
1305     {
1306       renderingAddOn.CreateGeometry(textureInfo.textureId, pixelBuffers[0]);
1307     }
1308
1309     // Remove previous textures and insert new textures
1310     textureInfo.textures.clear();
1311
1312     for(auto&& pixelBuffer : pixelBuffers)
1313     {
1314       Texture   texture   = Texture::New(Dali::TextureType::TEXTURE_2D, pixelBuffer.GetPixelFormat(), pixelBuffer.GetWidth(), pixelBuffer.GetHeight());
1315       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer);
1316       texture.Upload(pixelData);
1317       textureInfo.textures.push_back(texture);
1318     }
1319   }
1320
1321   // Update the load state.
1322   // Note: This is regardless of success as we care about whether a
1323   // load attempt is in progress or not.  If unsuccessful, a broken
1324   // image is still loaded.
1325   textureInfo.loadState = LoadState::UPLOADED;
1326 }
1327
1328 void TextureManager::NotifyObservers(TextureManager::TextureInfo& textureInfo, const bool& success)
1329 {
1330   TextureId textureId = textureInfo.textureId;
1331
1332   // If there is an observer: Notify the load is complete, whether successful or not,
1333   // and erase it from the list
1334   TextureInfo* info = &textureInfo;
1335
1336   if(info->animatedImageLoading)
1337   {
1338     // If loading failed, we don't need to get frameCount and frameInterval.
1339     if(success)
1340     {
1341       info->frameCount    = info->animatedImageLoading.GetImageCount();
1342       info->frameInterval = info->animatedImageLoading.GetFrameInterval(info->frameIndex);
1343     }
1344     info->animatedImageLoading.Reset();
1345   }
1346
1347   mLoadingQueueTextureId = textureId;
1348
1349   // Reverse observer list that we can pop_back the observer.
1350   std::reverse(info->observerList.Begin(), info->observerList.End());
1351
1352   while(info->observerList.Count())
1353   {
1354     TextureUploadObserver* observer = *(info->observerList.End() - 1u);
1355
1356     // During LoadComplete() a Control ResourceReady() signal is emitted.
1357     // During that signal the app may add remove /add Textures (e.g. via
1358     // ImageViews).
1359     // It is possible for observers to be removed from the observer list,
1360     // and it is also possible for the mTextureInfoContainer to be modified,
1361     // invalidating the reference to the textureInfo struct.
1362     // Texture load requests for the same URL are deferred until the end of this
1363     // method.
1364     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));
1365     // It is possible for the observer to be deleted.
1366     // Disconnect and remove the observer first.
1367     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1368     observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1369
1370     info->observerList.Erase(info->observerList.End() - 1u);
1371
1372     EmitLoadComplete(observer, *info, success);
1373
1374     // Get the textureInfo from the container again as it may have been invalidated.
1375     TextureCacheIndex textureInfoIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1376     if(textureInfoIndex == INVALID_CACHE_INDEX)
1377     {
1378       break; // texture has been removed - can stop.
1379     }
1380     info = &mTextureCacheManager[textureInfoIndex];
1381   }
1382
1383   mLoadingQueueTextureId = INVALID_TEXTURE_ID;
1384   ProcessLoadQueue();
1385
1386   if(info->storageType == StorageType::RETURN_PIXEL_BUFFER && info->observerList.Count() == 0)
1387   {
1388     RequestRemove(info->textureId, nullptr);
1389   }
1390 }
1391
1392 void TextureManager::ObserverDestroyed(TextureUploadObserver* observer)
1393 {
1394   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "TextureManager::ObserverDestroyed() observer:%p\n", observer);
1395
1396   const std::size_t size = mTextureCacheManager.size();
1397   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1398   {
1399     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1400     for(TextureInfo::ObserverListType::Iterator j = textureInfo.observerList.Begin();
1401         j != textureInfo.observerList.End();)
1402     {
1403       if(*j == observer)
1404       {
1405         j = textureInfo.observerList.Erase(j);
1406       }
1407       else
1408       {
1409         ++j;
1410       }
1411     }
1412   }
1413
1414   // Remove element from the LoadQueue
1415   for(auto&& element : mLoadQueue)
1416   {
1417     if(element.mObserver == observer)
1418     {
1419       element.mTextureId = INVALID_TEXTURE_ID;
1420       element.mObserver  = nullptr;
1421     }
1422   }
1423 }
1424
1425 Dali::Geometry TextureManager::GetRenderGeometry(const TextureManager::TextureId& textureId, std::uint32_t& frontElements, std::uint32_t& backElements)
1426 {
1427   return RenderingAddOn::Get().IsValid() ? RenderingAddOn::Get().GetGeometry(textureId, frontElements, backElements) : Geometry();
1428 }
1429
1430 void TextureManager::EmitLoadComplete(TextureUploadObserver* observer, TextureManager::TextureInfo& textureInfo, const bool& success)
1431 {
1432   if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1433   {
1434     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::PIXEL_BUFFER, textureInfo.pixelBuffer, textureInfo.url.GetUrl(), textureInfo.preMultiplied));
1435   }
1436   else
1437   {
1438     TextureSet textureSet = GetTextureSet(textureInfo);
1439     if(textureInfo.isAnimatedImageFormat)
1440     {
1441       observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::ANIMATED_IMAGE_TEXTURE, textureInfo.textureId, textureSet, textureInfo.frameCount, textureInfo.frameInterval));
1442     }
1443     else
1444     {
1445       observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::TEXTURE, textureInfo.textureId, textureSet, (textureInfo.useAtlas == UseAtlas::USE_ATLAS) ? true : false, textureInfo.atlasRect, textureInfo.preMultiplied));
1446     }
1447   }
1448 }
1449
1450 TextureSet TextureManager::GetTextureSet(const TextureManager::TextureId& textureId)
1451 {
1452   TextureSet                textureSet;
1453   TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
1454   if(loadState == TextureManager::LoadState::UPLOADED)
1455   {
1456     // LoadComplete has already been called - keep the same texture set
1457     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1458     if(textureCacheIndex != INVALID_CACHE_INDEX)
1459     {
1460       TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
1461       textureSet = GetTextureSet(textureInfo);
1462     }
1463   }
1464   else
1465   {
1466     DALI_LOG_ERROR("GetTextureSet is failed. texture is not uploaded \n");
1467   }
1468   return textureSet;
1469 }
1470
1471 TextureSet TextureManager::GetTextureSet(const TextureManager::TextureInfo& textureInfo)
1472 {
1473   TextureSet textureSet;
1474
1475   // LoadComplete has already been called - keep the same texture set
1476   textureSet = TextureSet::New();
1477   if(!textureInfo.textures.empty())
1478   {
1479     if(textureInfo.textures.size() > 1) // For YUV case
1480     {
1481       uint32_t index = 0u;
1482       for(auto&& texture : textureInfo.textures)
1483       {
1484         textureSet.SetTexture(index++, texture);
1485       }
1486     }
1487     else
1488     {
1489       textureSet.SetTexture(TEXTURE_INDEX, textureInfo.textures[0]);
1490       TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1491       if(maskCacheIndex != INVALID_CACHE_INDEX)
1492       {
1493         TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1494         if(maskTextureInfo.storageType == StorageType::UPLOAD_TO_TEXTURE || maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1495         {
1496           if(!maskTextureInfo.textures.empty())
1497           {
1498             textureSet.SetTexture(MASK_TEXTURE_INDEX, maskTextureInfo.textures[0]);
1499           }
1500         }
1501       }
1502     }
1503   }
1504   return textureSet;
1505 }
1506
1507 void TextureManager::RemoveTextureObserver(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
1508 {
1509   // Remove its observer
1510   if(observer)
1511   {
1512     const auto iterEnd = textureInfo.observerList.End();
1513     const auto iter    = std::find(textureInfo.observerList.Begin(), iterEnd, observer);
1514     if(iter != iterEnd)
1515     {
1516       // Disconnect and remove the observer.
1517       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1518       observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1519       textureInfo.observerList.Erase(iter);
1520     }
1521   }
1522 }
1523
1524 } // namespace Internal
1525
1526 } // namespace Toolkit
1527
1528 } // namespace Dali