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

   1 /*
   2  * Copyright (c) 2022 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 "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/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 constexpr auto DEFAULT_NUMBER_OF_LOCAL_LOADER_THREADS  = size_t{4u};
  38 constexpr auto DEFAULT_NUMBER_OF_REMOTE_LOADER_THREADS = size_t{8u};
  39
  40 constexpr auto NUMBER_OF_LOCAL_LOADER_THREADS_ENV  = "DALI_TEXTURE_LOCAL_THREADS";
  41 constexpr auto NUMBER_OF_REMOTE_LOADER_THREADS_ENV = "DALI_TEXTURE_REMOTE_THREADS";
  42 constexpr auto LOAD_IMAGE_YUV_PLANES_ENV           = "DALI_LOAD_IMAGE_YUV_PLANES";
  43
  44 size_t GetNumberOfThreads(const char* environmentVariable, size_t defaultValue)
  45 {
  46   using Dali::EnvironmentVariable::GetEnvironmentVariable;
  47   auto           numberString          = GetEnvironmentVariable(environmentVariable);
  48   auto           numberOfThreads       = numberString ? std::strtoul(numberString, nullptr, 10) : 0;
  49   constexpr auto MAX_NUMBER_OF_THREADS = 100u;
  50   DALI_ASSERT_DEBUG(numberOfThreads < MAX_NUMBER_OF_THREADS);
  51   return (numberOfThreads > 0 && numberOfThreads < MAX_NUMBER_OF_THREADS) ? numberOfThreads : defaultValue;
  52 }
  53
  54 size_t GetNumberOfLocalLoaderThreads()
  55 {
  56   return GetNumberOfThreads(NUMBER_OF_LOCAL_LOADER_THREADS_ENV, DEFAULT_NUMBER_OF_LOCAL_LOADER_THREADS);
  57 }
  58
  59 size_t GetNumberOfRemoteLoaderThreads()
  60 {
  61   return GetNumberOfThreads(NUMBER_OF_REMOTE_LOADER_THREADS_ENV, DEFAULT_NUMBER_OF_REMOTE_LOADER_THREADS);
  62 }
  63
  64 bool NeedToLoadYuvPlanes()
  65 {
  66   auto loadYuvPlanesString = Dali::EnvironmentVariable::GetEnvironmentVariable(LOAD_IMAGE_YUV_PLANES_ENV);
  67   bool loadYuvPlanes       = loadYuvPlanesString ? std::atoi(loadYuvPlanesString) : false;
  68   return loadYuvPlanes;
  69 }
  70 } // namespace
  71
  72 namespace Dali
  73 {
  74 namespace Toolkit
  75 {
  76 namespace Internal
  77 {
  78 #ifdef DEBUG_ENABLED
  79 // Define logfilter Internal namespace level so other files (e.g. texture-cache-manager.cpp) can also use this filter.
  80 Debug::Filter* gTextureManagerLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_TEXTURE_MANAGER");
  81
  82 // clang-format off
  83 #define GET_LOAD_STATE_STRING(loadState) \
  84   loadState == TextureManagerType::LoadState::NOT_STARTED      ? "NOT_STARTED"      : \
  85   loadState == TextureManagerType::LoadState::LOADING          ? "LOADING"          : \
  86   loadState == TextureManagerType::LoadState::LOAD_FINISHED    ? "LOAD_FINISHED"    : \
  87   loadState == TextureManagerType::LoadState::WAITING_FOR_MASK ? "WAITING_FOR_MASK" : \
  88   loadState == TextureManagerType::LoadState::MASK_APPLYING    ? "MASK_APPLYING"    : \
  89   loadState == TextureManagerType::LoadState::MASK_APPLIED     ? "MASK_APPLIED"     : \
  90   loadState == TextureManagerType::LoadState::UPLOADED         ? "UPLOADED"         : \
  91   loadState == TextureManagerType::LoadState::CANCELLED        ? "CANCELLED"        : \
  92   loadState == TextureManagerType::LoadState::LOAD_FAILED      ? "LOAD_FAILED"      : \
  93                                                                  "Unknown"
  94 // clang-format on
  95 #endif
  96
  97 namespace
  98 {
  99 const uint32_t DEFAULT_ATLAS_SIZE(1024u);               ///< This size can fit 8 by 8 images of average size 128 * 128
 100 const Vector4  FULL_ATLAS_RECT(0.0f, 0.0f, 1.0f, 1.0f); ///< UV Rectangle that covers the full Texture
 101
 102 void PreMultiply(Devel::PixelBuffer pixelBuffer, TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 103 {
 104   if(Pixel::HasAlpha(pixelBuffer.GetPixelFormat()))
 105   {
 106     if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 107     {
 108       pixelBuffer.MultiplyColorByAlpha();
 109     }
 110   }
 111   else
 112   {
 113     preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 114   }
 115 }
 116
 117 } // Anonymous namespace
 118
 119 TextureManager::MaskingData::MaskingData()
 120 : mAlphaMaskUrl(),
 121   mAlphaMaskId(INVALID_TEXTURE_ID),
 122   mContentScaleFactor(1.0f),
 123   mCropToMask(true),
 124   mPreappliedMasking(true),
 125   mMaskImageLoadingFailed(false)
 126 {
 127 }
 128
 129 TextureManager::TextureManager()
 130 : mTextureCacheManager(),
 131   mAsyncLocalLoaders(GetNumberOfLocalLoaderThreads(), [&]() { return TextureAsyncLoadingHelper(*this); }),
 132   mAsyncRemoteLoaders(GetNumberOfRemoteLoaderThreads(), [&]() { return TextureAsyncLoadingHelper(*this); }),
 133   mLifecycleObservers(),
 134   mLoadQueue(),
 135   mRemoveQueue(),
 136   mQueueLoadFlag(false),
 137   mLoadYuvPlanes(NeedToLoadYuvPlanes())
 138 {
 139   // Initialize the AddOn
 140   RenderingAddOn::Get();
 141 }
 142
 143 TextureManager::~TextureManager()
 144 {
 145   for(auto iter = mLifecycleObservers.Begin(), endIter = mLifecycleObservers.End(); iter != endIter; ++iter)
 146   {
 147     (*iter)->TextureManagerDestroyed();
 148   }
 149 }
 150
 151 TextureSet TextureManager::LoadAnimatedImageTexture(
 152   const VisualUrl&                url,
 153   Dali::AnimatedImageLoading      animatedImageLoading,
 154   const uint32_t&                 frameIndex,
 155   TextureManager::TextureId&      textureId,
 156   MaskingDataPointer&             maskInfo,
 157   const Dali::SamplingMode::Type& samplingMode,
 158   const Dali::WrapMode::Type&     wrapModeU,
 159   const Dali::WrapMode::Type&     wrapModeV,
 160   const bool&                     synchronousLoading,
 161   TextureUploadObserver*          textureObserver,
 162   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 163 {
 164   TextureSet textureSet;
 165
 166   if(synchronousLoading)
 167   {
 168     Devel::PixelBuffer pixelBuffer;
 169     if(animatedImageLoading)
 170     {
 171       pixelBuffer = animatedImageLoading.LoadFrame(frameIndex);
 172     }
 173     if(!pixelBuffer)
 174     {
 175       DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous loading is failed\n");
 176     }
 177     else
 178     {
 179       Texture maskTexture;
 180       if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 181       {
 182         Devel::PixelBuffer maskPixelBuffer = LoadImageFromFile(maskInfo->mAlphaMaskUrl.GetUrl(), ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, true);
 183         if(maskPixelBuffer)
 184         {
 185           if(!maskInfo->mPreappliedMasking)
 186           {
 187             PixelData maskPixelData = Devel::PixelBuffer::Convert(maskPixelBuffer); // takes ownership of buffer
 188             maskTexture             = Texture::New(Dali::TextureType::TEXTURE_2D, maskPixelData.GetPixelFormat(), maskPixelData.GetWidth(), maskPixelData.GetHeight());
 189             maskTexture.Upload(maskPixelData);
 190           }
 191           else
 192           {
 193             pixelBuffer.ApplyMask(maskPixelBuffer, maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 194           }
 195         }
 196         else
 197         {
 198           DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous mask image loading is failed\n");
 199         }
 200       }
 201
 202       if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 203       {
 204         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 205       }
 206
 207       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer); // takes ownership of buffer
 208       if(!textureSet)
 209       {
 210         Texture texture = Texture::New(Dali::TextureType::TEXTURE_2D, pixelData.GetPixelFormat(), pixelData.GetWidth(), pixelData.GetHeight());
 211         texture.Upload(pixelData);
 212         textureSet = TextureSet::New();
 213         textureSet.SetTexture(0u, texture);
 214         if(maskTexture)
 215         {
 216           textureSet.SetTexture(1u, maskTexture);
 217         }
 218       }
 219     }
 220   }
 221   else
 222   {
 223     TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 224     float     contentScaleFactor = 1.0f;
 225     bool      cropToMask         = false;
 226     if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 227     {
 228       maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? StorageType::KEEP_PIXEL_BUFFER : StorageType::KEEP_TEXTURE);
 229       alphaMaskId            = maskInfo->mAlphaMaskId;
 230       if(maskInfo->mPreappliedMasking)
 231       {
 232         contentScaleFactor = maskInfo->mContentScaleFactor;
 233         cropToMask         = maskInfo->mCropToMask;
 234       }
 235     }
 236
 237     textureId = RequestLoadInternal(url, alphaMaskId, contentScaleFactor, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::BOX_THEN_LINEAR, UseAtlas::NO_ATLAS, cropToMask, StorageType::UPLOAD_TO_TEXTURE, textureObserver, true, TextureManager::ReloadPolicy::CACHED, preMultiplyOnLoad, animatedImageLoading, frameIndex, false);
 238
 239     TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 240     if(loadState == TextureManager::LoadState::UPLOADED)
 241     {
 242       // LoadComplete has already been called - keep the same texture set
 243       textureSet = GetTextureSet(textureId);
 244     }
 245   }
 246
 247   if(textureSet)
 248   {
 249     Sampler sampler = Sampler::New();
 250     sampler.SetWrapMode(wrapModeU, wrapModeV);
 251     textureSet.SetSampler(0u, sampler);
 252   }
 253
 254   return textureSet;
 255 }
 256
 257 Devel::PixelBuffer TextureManager::LoadPixelBuffer(
 258   const VisualUrl&                url,
 259   const Dali::ImageDimensions&    desiredSize,
 260   const Dali::FittingMode::Type&  fittingMode,
 261   const Dali::SamplingMode::Type& samplingMode,
 262   const bool&                     synchronousLoading,
 263   TextureUploadObserver*          textureObserver,
 264   const bool&                     orientationCorrection,
 265   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 266 {
 267   Devel::PixelBuffer pixelBuffer;
 268   if(synchronousLoading)
 269   {
 270     if(url.IsValid())
 271     {
 272       if(url.IsBufferResource())
 273       {
 274         const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 275         if(encodedImageBuffer)
 276         {
 277           pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 278         }
 279       }
 280       else
 281       {
 282         pixelBuffer = LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 283       }
 284       if(pixelBuffer && preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 285       {
 286         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 287       }
 288     }
 289   }
 290   else
 291   {
 292     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);
 293   }
 294
 295   return pixelBuffer;
 296 }
 297
 298 TextureSet TextureManager::LoadTexture(
 299   const VisualUrl&                    url,
 300   const Dali::ImageDimensions&        desiredSize,
 301   const Dali::FittingMode::Type&      fittingMode,
 302   const Dali::SamplingMode::Type&     samplingMode,
 303   MaskingDataPointer&                 maskInfo,
 304   const bool&                         synchronousLoading,
 305   TextureManager::TextureId&          textureId,
 306   Vector4&                            textureRect,
 307   Dali::ImageDimensions&              textureRectSize,
 308   bool&                               atlasingStatus,
 309   bool&                               loadingStatus,
 310   const Dali::WrapMode::Type&         wrapModeU,
 311   const Dali::WrapMode::Type&         wrapModeV,
 312   TextureUploadObserver*              textureObserver,
 313   AtlasUploadObserver*                atlasObserver,
 314   ImageAtlasManagerPtr                imageAtlasManager,
 315   const bool&                         orientationCorrection,
 316   const TextureManager::ReloadPolicy& reloadPolicy,
 317   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad)
 318 {
 319   TextureSet textureSet;
 320
 321   loadingStatus = false;
 322   textureRect   = FULL_ATLAS_RECT;
 323
 324   if(VisualUrl::TEXTURE == url.GetProtocolType())
 325   {
 326     std::string location = url.GetLocation();
 327     if(location.size() > 0u)
 328     {
 329       TextureId id = std::stoi(location);
 330       textureSet   = mTextureCacheManager.GetExternalTextureSet(id);
 331       if(textureSet)
 332       {
 333         preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 334         textureId         = id;
 335         return textureSet;
 336       }
 337     }
 338   }
 339   else
 340   {
 341     // For Atlas
 342     if(synchronousLoading && atlasingStatus)
 343     {
 344       const bool synchronousAtlasAvaliable = (desiredSize != ImageDimensions() || url.IsLocalResource()) ? imageAtlasManager->CheckAtlasAvailable(url, desiredSize)
 345                                                                                                          : false;
 346       if(synchronousAtlasAvaliable)
 347       {
 348         std::vector<Devel::PixelBuffer> pixelBuffers;
 349         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, false, pixelBuffers);
 350
 351         if(!pixelBuffers.empty() && maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 352         {
 353           std::vector<Devel::PixelBuffer> maskPixelBuffers;
 354           LoadImageSynchronously(maskInfo->mAlphaMaskUrl, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, true, false, maskPixelBuffers);
 355           if(!maskPixelBuffers.empty())
 356           {
 357             pixelBuffers[0].ApplyMask(maskPixelBuffers[0], maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 358           }
 359         }
 360
 361         PixelData data;
 362         if(!pixelBuffers.empty())
 363         {
 364           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 365           data = Devel::PixelBuffer::Convert(pixelBuffers[0]); // takes ownership of buffer
 366
 367           if(data)
 368           {
 369             textureSet = imageAtlasManager->Add(textureRect, data);
 370             if(textureSet)
 371             {
 372               textureRectSize.SetWidth(data.GetWidth());
 373               textureRectSize.SetHeight(data.GetHeight());
 374             }
 375           }
 376           else
 377           {
 378             DALI_LOG_ERROR("TextureManager::LoadTexture: Synchronous Texture loading with atlasing is failed.\n");
 379           }
 380         }
 381         if(!textureSet)
 382         {
 383           atlasingStatus = false;
 384         }
 385       }
 386     }
 387
 388     if(!textureSet)
 389     {
 390       loadingStatus = true;
 391       // Atlas manager can chage desired size when it is set by 0,0.
 392       // We should store into textureRectSize only if atlasing successed.
 393       // So copy inputed desiredSize, and replace value into textureRectSize only if atlasing success.
 394       Dali::ImageDimensions atlasDesiredSize = desiredSize;
 395       if(atlasingStatus)
 396       {
 397         if(url.IsBufferResource())
 398         {
 399           const EncodedImageBuffer& encodedImageBuffer = GetEncodedImageBuffer(url.GetUrl());
 400           if(encodedImageBuffer)
 401           {
 402             textureSet = imageAtlasManager->Add(textureRect, encodedImageBuffer, desiredSize, fittingMode, true, atlasObserver);
 403           }
 404         }
 405         else
 406         {
 407           textureSet = imageAtlasManager->Add(textureRect, url, atlasDesiredSize, fittingMode, true, atlasObserver);
 408         }
 409       }
 410       if(!textureSet) // big image, no atlasing or atlasing failed
 411       {
 412         atlasingStatus = false;
 413
 414         TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 415         float     contentScaleFactor = 1.0f;
 416         bool      cropToMask         = false;
 417         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 418         {
 419           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? StorageType::KEEP_PIXEL_BUFFER : StorageType::KEEP_TEXTURE, synchronousLoading);
 420           alphaMaskId            = maskInfo->mAlphaMaskId;
 421           if(maskInfo && maskInfo->mPreappliedMasking)
 422           {
 423             contentScaleFactor = maskInfo->mContentScaleFactor;
 424             cropToMask         = maskInfo->mCropToMask;
 425           }
 426         }
 427
 428         textureId = RequestLoad(
 429           url,
 430           alphaMaskId,
 431           contentScaleFactor,
 432           desiredSize,
 433           fittingMode,
 434           samplingMode,
 435           UseAtlas::NO_ATLAS,
 436           cropToMask,
 437           textureObserver,
 438           orientationCorrection,
 439           reloadPolicy,
 440           preMultiplyOnLoad,
 441           synchronousLoading);
 442
 443         TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 444         if(loadState == TextureManager::LoadState::UPLOADED)
 445         {
 446           // LoadComplete has already been called - keep the same texture set
 447           textureSet = mTextureCacheManager.GetTextureSet(textureId);
 448         }
 449
 450         // If we are loading the texture, or waiting for the ready signal handler to complete, inform
 451         // caller that they need to wait.
 452         loadingStatus = (loadState == TextureManager::LoadState::LOADING ||
 453                          loadState == TextureManager::LoadState::WAITING_FOR_MASK ||
 454                          loadState == TextureManager::LoadState::MASK_APPLYING ||
 455                          loadState == TextureManager::LoadState::MASK_APPLIED ||
 456                          loadState == TextureManager::LoadState::NOT_STARTED ||
 457                          mQueueLoadFlag);
 458       }
 459       else
 460       {
 461         textureRectSize = atlasDesiredSize;
 462       }
 463     }
 464   }
 465
 466   if(!atlasingStatus && textureSet)
 467   {
 468     Sampler sampler = Sampler::New();
 469     sampler.SetWrapMode(wrapModeU, wrapModeV);
 470     textureSet.SetSampler(0u, sampler);
 471   }
 472
 473   if(synchronousLoading)
 474   {
 475     loadingStatus = false;
 476   }
 477
 478   return textureSet;
 479 }
 480
 481 TextureManager::TextureId TextureManager::RequestLoad(
 482   const VisualUrl&                    url,
 483   const ImageDimensions&              desiredSize,
 484   const Dali::FittingMode::Type&      fittingMode,
 485   const Dali::SamplingMode::Type&     samplingMode,
 486   const UseAtlas&                     useAtlas,
 487   TextureUploadObserver*              observer,
 488   const bool&                         orientationCorrection,
 489   const TextureManager::ReloadPolicy& reloadPolicy,
 490   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 491   const bool&                         synchronousLoading)
 492 {
 493   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);
 494 }
 495
 496 TextureManager::TextureId TextureManager::RequestLoad(
 497   const VisualUrl&                    url,
 498   const TextureManager::TextureId&    maskTextureId,
 499   const float&                        contentScale,
 500   const Dali::ImageDimensions&        desiredSize,
 501   const Dali::FittingMode::Type&      fittingMode,
 502   const Dali::SamplingMode::Type&     samplingMode,
 503   const TextureManager::UseAtlas&     useAtlas,
 504   const bool&                         cropToMask,
 505   TextureUploadObserver*              observer,
 506   const bool&                         orientationCorrection,
 507   const TextureManager::ReloadPolicy& reloadPolicy,
 508   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 509   const bool&                         synchronousLoading)
 510 {
 511   return RequestLoadInternal(url, maskTextureId, contentScale, desiredSize, fittingMode, samplingMode, useAtlas, cropToMask, StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 512 }
 513
 514 TextureManager::TextureId TextureManager::RequestMaskLoad(
 515   const VisualUrl& maskUrl,
 516   StorageType      storageType,
 517   const bool&      synchronousLoading)
 518 {
 519   // Use the normal load procedure to get the alpha mask.
 520   auto preMultiply = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 521   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);
 522 }
 523
 524 TextureManager::TextureId TextureManager::RequestLoadInternal(
 525   const VisualUrl&                    url,
 526   const TextureManager::TextureId&    maskTextureId,
 527   const float&                        contentScale,
 528   const Dali::ImageDimensions&        desiredSize,
 529   const Dali::FittingMode::Type&      fittingMode,
 530   const Dali::SamplingMode::Type&     samplingMode,
 531   const TextureManager::UseAtlas&     useAtlas,
 532   const bool&                         cropToMask,
 533   const TextureManager::StorageType&  storageType,
 534   TextureUploadObserver*              observer,
 535   const bool&                         orientationCorrection,
 536   const TextureManager::ReloadPolicy& reloadPolicy,
 537   TextureManager::MultiplyOnLoad&     preMultiplyOnLoad,
 538   Dali::AnimatedImageLoading          animatedImageLoading,
 539   const std::uint32_t&                frameIndex,
 540   const bool&                         synchronousLoading)
 541 {
 542   TextureHash       textureHash   = INITIAL_HASH_NUMBER;
 543   TextureCacheIndex cacheIndex    = INVALID_CACHE_INDEX;
 544   bool              loadYuvPlanes = (mLoadYuvPlanes && maskTextureId == INVALID_TEXTURE_ID && storageType == StorageType::UPLOAD_TO_TEXTURE);
 545
 546   if(storageType != StorageType::RETURN_PIXEL_BUFFER)
 547   {
 548     textureHash = mTextureCacheManager.GenerateHash(url, desiredSize, fittingMode, samplingMode, useAtlas, maskTextureId, cropToMask, frameIndex);
 549
 550     // Look up the texture by hash. Note: The extra parameters are used in case of a hash collision.
 551     cacheIndex = mTextureCacheManager.FindCachedTexture(textureHash, url, desiredSize, fittingMode, samplingMode, useAtlas, storageType, maskTextureId, cropToMask, preMultiplyOnLoad, (animatedImageLoading) ? true : false, frameIndex);
 552   }
 553
 554   TextureManager::TextureId textureId = INVALID_TEXTURE_ID;
 555   // Check if the requested Texture exists in the cache.
 556   if(cacheIndex != INVALID_CACHE_INDEX)
 557   {
 558     if(TextureManager::ReloadPolicy::CACHED == reloadPolicy)
 559     {
 560       // Mark this texture being used by another client resource. Forced reload would replace the current texture
 561       // without the need for incrementing the reference count.
 562       ++(mTextureCacheManager[cacheIndex].referenceCount);
 563     }
 564     textureId = mTextureCacheManager[cacheIndex].textureId;
 565
 566     // Update preMultiplyOnLoad value. It should be changed according to preMultiplied value of the cached info.
 567     preMultiplyOnLoad = mTextureCacheManager[cacheIndex].preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 568
 569     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) Using cached texture id@%d, textureId=%d, frameindex=%d, premultiplied=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, frameIndex, mTextureCacheManager[cacheIndex].preMultiplied ? 1 : 0);
 570   }
 571
 572   if(textureId == INVALID_TEXTURE_ID) // There was no caching, or caching not required
 573   {
 574     textureId = mTextureCacheManager.GenerateTextureId();
 575
 576     bool preMultiply = (preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 577
 578     // Cache new texutre, and get cacheIndex.
 579     cacheIndex = mTextureCacheManager.AppendCache(TextureInfo(textureId, maskTextureId, url, desiredSize, contentScale, fittingMode, samplingMode, false, cropToMask, useAtlas, textureHash, orientationCorrection, preMultiply, animatedImageLoading, frameIndex, loadYuvPlanes));
 580
 581     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) New texture, cacheIndex:%d, textureId=%d, frameindex=%d premultiply=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, frameIndex, preMultiply);
 582   }
 583
 584   // The below code path is common whether we are using the cache or not.
 585   // The textureInfoIndex now refers to either a pre-existing cached TextureInfo,
 586   // or a new TextureInfo just created.
 587   TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 588   textureInfo.maskTextureId         = maskTextureId;
 589   textureInfo.storageType           = storageType;
 590   textureInfo.orientationCorrection = orientationCorrection;
 591
 592   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureInfo loadState:%s\n", GET_LOAD_STATE_STRING(textureInfo.loadState));
 593
 594   // Force reloading of texture by setting loadState unless already loading or cancelled.
 595   if(TextureManager::ReloadPolicy::FORCED == reloadPolicy &&
 596      TextureManager::LoadState::LOADING != textureInfo.loadState &&
 597      TextureManager::LoadState::WAITING_FOR_MASK != textureInfo.loadState &&
 598      TextureManager::LoadState::MASK_APPLYING != textureInfo.loadState &&
 599      TextureManager::LoadState::MASK_APPLIED != textureInfo.loadState &&
 600      TextureManager::LoadState::CANCELLED != textureInfo.loadState)
 601   {
 602     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "TextureManager::RequestLoad( url=%s observer=%p ) ForcedReload cacheIndex:%d, textureId=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId);
 603
 604     textureInfo.loadState = TextureManager::LoadState::NOT_STARTED;
 605   }
 606
 607   if(!synchronousLoading)
 608   {
 609     // Check if we should add the observer.
 610     // Only do this if we have not loaded yet and it will not have loaded by the end of this method.
 611     switch(textureInfo.loadState)
 612     {
 613       case TextureManager::LoadState::LOAD_FAILED: // Failed notifies observer which then stops observing.
 614       case TextureManager::LoadState::NOT_STARTED:
 615       {
 616         LoadOrQueueTexture(textureInfo, observer); // If called inside NotifyObservers, queues until afterwards
 617         break;
 618       }
 619       case TextureManager::LoadState::LOADING:
 620       case TextureManager::LoadState::WAITING_FOR_MASK:
 621       case TextureManager::LoadState::MASK_APPLYING:
 622       case TextureManager::LoadState::MASK_APPLIED:
 623       {
 624         ObserveTexture(textureInfo, observer);
 625         break;
 626       }
 627       case TextureManager::LoadState::UPLOADED:
 628       {
 629         if(observer)
 630         {
 631           LoadOrQueueTexture(textureInfo, observer);
 632         }
 633         break;
 634       }
 635       case TextureManager::LoadState::CANCELLED:
 636       {
 637         // A cancelled texture hasn't finished loading yet. Treat as a loading texture
 638         // (it's ref count has already been incremented, above)
 639         textureInfo.loadState = TextureManager::LoadState::LOADING;
 640         ObserveTexture(textureInfo, observer);
 641         break;
 642       }
 643       case TextureManager::LoadState::LOAD_FINISHED:
 644       {
 645         // Loading has already completed.
 646         if(observer && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
 647         {
 648           LoadOrQueueTexture(textureInfo, observer);
 649         }
 650         break;
 651       }
 652     }
 653   }
 654   else
 655   {
 656     // If the image is already finished to load, use cached texture.
 657     // We don't need to consider Observer because this is synchronous loading.
 658     if(!(textureInfo.loadState == TextureManager::LoadState::UPLOADED ||
 659          textureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED))
 660     {
 661       std::vector<Devel::PixelBuffer> pixelBuffers;
 662       LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, loadYuvPlanes, pixelBuffers);
 663
 664       if(pixelBuffers.empty())
 665       {
 666         // If pixelBuffer loading is failed in synchronously, call Remove() method.
 667         Remove(textureId, nullptr);
 668         return INVALID_TEXTURE_ID;
 669       }
 670
 671       if(storageType == StorageType::KEEP_PIXEL_BUFFER) // For the mask image loading.
 672       {
 673         textureInfo.pixelBuffer = pixelBuffers[0]; // Store the pixel data
 674         textureInfo.loadState   = LoadState::LOAD_FINISHED;
 675       }
 676       else // For the image loading.
 677       {
 678         Texture maskTexture;
 679         if(maskTextureId != INVALID_TEXTURE_ID)
 680         {
 681           TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 682           if(maskCacheIndex != INVALID_CACHE_INDEX)
 683           {
 684             if(mTextureCacheManager[maskCacheIndex].storageType == StorageType::KEEP_TEXTURE)
 685             {
 686               TextureSet maskTextures = mTextureCacheManager[maskCacheIndex].textureSet;
 687               if(maskTextures && maskTextures.GetTextureCount())
 688               {
 689                 maskTexture = maskTextures.GetTexture(0u);
 690               }
 691             }
 692             else if(mTextureCacheManager[maskCacheIndex].storageType == StorageType::KEEP_PIXEL_BUFFER)
 693             {
 694               Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
 695               if(maskPixelBuffer)
 696               {
 697                 pixelBuffers[0].ApplyMask(maskPixelBuffer, contentScale, cropToMask);
 698               }
 699               else
 700               {
 701                 DALI_LOG_ERROR("Mask image cached invalid pixel buffer!\n");
 702               }
 703             }
 704           }
 705           else
 706           {
 707             DALI_LOG_ERROR("Mask image is not stored in cache.\n");
 708           }
 709         }
 710         PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 711
 712         // Upload texture
 713         UploadTextures(pixelBuffers, textureInfo);
 714         if(maskTexture && textureInfo.textureSet)
 715         {
 716           textureInfo.textureSet.SetTexture(1u, maskTexture);
 717         }
 718       }
 719     }
 720   }
 721   return textureId;
 722 }
 723
 724 void TextureManager::Remove(const TextureManager::TextureId& textureId, TextureUploadObserver* observer)
 725 {
 726   if(textureId != INVALID_TEXTURE_ID)
 727   {
 728     if(mQueueLoadFlag)
 729     {
 730       // Remove textureId after NotifyObserver finished
 731       mRemoveQueue.PushBack(textureId);
 732     }
 733     else
 734     {
 735       // Erase observer
 736       if(observer)
 737       {
 738         TextureCacheIndex textureInfoIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 739         if(textureInfoIndex != INVALID_CACHE_INDEX)
 740         {
 741           TextureInfo& textureInfo(mTextureCacheManager[textureInfoIndex]);
 742           for(auto it = textureInfo.observerList.Begin(), endIt = textureInfo.observerList.End(); it != endIt; it++)
 743           {
 744             if((*it) == observer)
 745             {
 746               // Disconnect and remove the observer.
 747               observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
 748               textureInfo.observerList.Erase(it);
 749               break;
 750             }
 751           }
 752         }
 753       }
 754
 755       // Remove textureId in CacheManager.
 756       mTextureCacheManager.RemoveCache(textureId);
 757     }
 758
 759     if(observer)
 760     {
 761       // Remove element from the LoadQueue
 762       for(auto&& element : mLoadQueue)
 763       {
 764         if(element.mObserver == observer)
 765         {
 766           // Do not erase the item. We will clear it later in ProcessLoadQueue().
 767           element.mObserver = nullptr;
 768           break;
 769         }
 770       }
 771     }
 772   }
 773 }
 774
 775 void TextureManager::LoadImageSynchronously(
 776   const VisualUrl&                 url,
 777   const Dali::ImageDimensions&     desiredSize,
 778   const Dali::FittingMode::Type&   fittingMode,
 779   const Dali::SamplingMode::Type&  samplingMode,
 780   const bool&                      orientationCorrection,
 781   const bool&                      loadYuvPlanes,
 782   std::vector<Devel::PixelBuffer>& pixelBuffers)
 783 {
 784   Devel::PixelBuffer pixelBuffer;
 785   if(url.IsBufferResource())
 786   {
 787     const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 788     if(encodedImageBuffer)
 789     {
 790       pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 791     }
 792   }
 793   else
 794   {
 795     if(loadYuvPlanes)
 796     {
 797       Dali::LoadImagePlanesFromFile(url.GetUrl(), pixelBuffers, desiredSize, fittingMode, samplingMode, orientationCorrection);
 798     }
 799     else
 800     {
 801       pixelBuffer = Dali::LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 802     }
 803   }
 804
 805   if(pixelBuffer)
 806   {
 807     pixelBuffers.push_back(pixelBuffer);
 808   }
 809 }
 810
 811 void TextureManager::AddObserver(TextureManager::LifecycleObserver& observer)
 812 {
 813   // make sure an observer doesn't observe the same object twice
 814   // otherwise it will get multiple calls to ObjectDestroyed()
 815   DALI_ASSERT_DEBUG(mLifecycleObservers.End() == std::find(mLifecycleObservers.Begin(), mLifecycleObservers.End(), &observer));
 816   mLifecycleObservers.PushBack(&observer);
 817 }
 818
 819 void TextureManager::RemoveObserver(TextureManager::LifecycleObserver& observer)
 820 {
 821   // Find the observer...
 822   auto endIter = mLifecycleObservers.End();
 823   for(auto iter = mLifecycleObservers.Begin(); iter != endIter; ++iter)
 824   {
 825     if((*iter) == &observer)
 826     {
 827       mLifecycleObservers.Erase(iter);
 828       break;
 829     }
 830   }
 831   DALI_ASSERT_DEBUG(endIter != mLifecycleObservers.End());
 832 }
 833
 834 void TextureManager::LoadOrQueueTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 835 {
 836   switch(textureInfo.loadState)
 837   {
 838     case LoadState::NOT_STARTED:
 839     case LoadState::LOAD_FAILED:
 840     {
 841       if(mQueueLoadFlag)
 842       {
 843         QueueLoadTexture(textureInfo, observer);
 844       }
 845       else
 846       {
 847         LoadTexture(textureInfo, observer);
 848       }
 849       break;
 850     }
 851     case LoadState::UPLOADED:
 852     {
 853       if(mQueueLoadFlag)
 854       {
 855         QueueLoadTexture(textureInfo, observer);
 856       }
 857       else
 858       {
 859         // The Texture has already loaded. The other observers have already been notified.
 860         // We need to send a "late" loaded notification for this observer.
 861         EmitLoadComplete(observer, textureInfo, true);
 862       }
 863       break;
 864     }
 865     case LoadState::LOADING:
 866     case LoadState::CANCELLED:
 867     case LoadState::LOAD_FINISHED:
 868     case LoadState::WAITING_FOR_MASK:
 869     case LoadState::MASK_APPLYING:
 870     case LoadState::MASK_APPLIED:
 871     {
 872       break;
 873     }
 874   }
 875 }
 876
 877 void TextureManager::QueueLoadTexture(const TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 878 {
 879   const auto& textureId = textureInfo.textureId;
 880   mLoadQueue.PushBack(LoadQueueElement(textureId, observer));
 881
 882   observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 883 }
 884
 885 void TextureManager::LoadTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 886 {
 887   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::LoadTexture(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
 888
 889   textureInfo.loadState = LoadState::LOADING;
 890   if(!textureInfo.loadSynchronously)
 891   {
 892     auto& loadersContainer  = (textureInfo.url.IsLocalResource() || textureInfo.url.IsBufferResource()) ? mAsyncLocalLoaders : mAsyncRemoteLoaders;
 893     auto  loadingHelperIt   = loadersContainer.GetNext();
 894     auto  premultiplyOnLoad = (textureInfo.preMultiplyOnLoad && textureInfo.maskTextureId == INVALID_TEXTURE_ID) ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
 895     DALI_ASSERT_ALWAYS(loadingHelperIt != loadersContainer.End());
 896     if(textureInfo.animatedImageLoading)
 897     {
 898       loadingHelperIt->LoadAnimatedImage(textureInfo.textureId, textureInfo.animatedImageLoading, textureInfo.frameIndex, premultiplyOnLoad);
 899     }
 900     else
 901     {
 902       loadingHelperIt->Load(textureInfo.textureId, textureInfo.url, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, textureInfo.orientationCorrection, premultiplyOnLoad, textureInfo.loadYuvPlanes);
 903     }
 904   }
 905   ObserveTexture(textureInfo, observer);
 906 }
 907
 908 void TextureManager::ProcessLoadQueue()
 909 {
 910   for(auto&& element : mLoadQueue)
 911   {
 912     if(!element.mObserver)
 913     {
 914       continue;
 915     }
 916
 917     TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(element.mTextureId);
 918     if(cacheIndex != INVALID_CACHE_INDEX)
 919     {
 920       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 921       if((textureInfo.loadState == LoadState::UPLOADED) || (textureInfo.loadState == LoadState::LOAD_FINISHED && textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER))
 922       {
 923         EmitLoadComplete(element.mObserver, textureInfo, true);
 924       }
 925       else if(textureInfo.loadState == LoadState::LOADING)
 926       {
 927         // Note : LOADING state texture cannot be queue.
 928         // This case be occured when same texture id are queue in mLoadQueue.
 929         ObserveTexture(textureInfo, element.mObserver);
 930       }
 931       else
 932       {
 933         LoadTexture(textureInfo, element.mObserver);
 934       }
 935     }
 936   }
 937   mLoadQueue.Clear();
 938 }
 939
 940 void TextureManager::ProcessRemoveQueue()
 941 {
 942   for(const auto& textureId : mRemoveQueue)
 943   {
 944     mTextureCacheManager.RemoveCache(textureId);
 945   }
 946   mRemoveQueue.Clear();
 947 }
 948
 949 void TextureManager::ObserveTexture(TextureManager::TextureInfo& textureInfo,
 950                                     TextureUploadObserver*       observer)
 951 {
 952   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ObserveTexture(): url:%s observer:%p\n", textureInfo.url.GetUrl().c_str(), observer);
 953
 954   if(observer)
 955   {
 956     textureInfo.observerList.PushBack(observer);
 957     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 958   }
 959 }
 960
 961 void TextureManager::AsyncLoadComplete(const TextureManager::TextureId& textureId, std::vector<Devel::PixelBuffer>& pixelBuffers)
 962 {
 963   TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 964   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::AsyncLoadComplete( textureId:%d CacheIndex:%d )\n", textureId, cacheIndex.GetIndex());
 965   if(cacheIndex != INVALID_CACHE_INDEX)
 966   {
 967     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 968
 969     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));
 970
 971     if(textureInfo.loadState != LoadState::CANCELLED)
 972     {
 973       // textureInfo can be invalidated after this call (as the mTextureInfoContainer may be modified)
 974       PostLoad(textureInfo, pixelBuffers);
 975     }
 976     else
 977     {
 978       Remove(textureInfo.textureId, nullptr);
 979     }
 980   }
 981 }
 982
 983 void TextureManager::PostLoad(TextureManager::TextureInfo& textureInfo, std::vector<Devel::PixelBuffer>& pixelBuffers)
 984 {
 985   // Was the load successful?
 986   if(!pixelBuffers.empty())
 987   {
 988     if(pixelBuffers.size() == 1)
 989     {
 990       Devel::PixelBuffer pixelBuffer = pixelBuffers[0];
 991       if(pixelBuffer && (pixelBuffer.GetWidth() != 0) && (pixelBuffer.GetHeight() != 0))
 992       {
 993         // No atlas support for now
 994         textureInfo.useAtlas      = UseAtlas::NO_ATLAS;
 995         textureInfo.preMultiplied = pixelBuffer.IsAlphaPreMultiplied();
 996
 997         if(textureInfo.storageType == StorageType::UPLOAD_TO_TEXTURE)
 998         {
 999           // If there is a mask texture ID associated with this texture, then apply the mask
1000           // if it's already loaded. If it hasn't, and the mask is still loading,
1001           // wait for the mask to finish loading.
1002           // note, If the texture is already uploaded synchronously during loading,
1003           // we don't need to apply mask.
1004           if(textureInfo.loadState != LoadState::UPLOADED &&
1005              textureInfo.maskTextureId != INVALID_TEXTURE_ID)
1006           {
1007             if(textureInfo.loadState == LoadState::MASK_APPLYING)
1008             {
1009               textureInfo.loadState = LoadState::MASK_APPLIED;
1010               UploadTextures(pixelBuffers, textureInfo);
1011               NotifyObservers(textureInfo, true);
1012             }
1013             else
1014             {
1015               LoadState maskLoadState = mTextureCacheManager.GetTextureStateInternal(textureInfo.maskTextureId);
1016               textureInfo.pixelBuffer = pixelBuffer; // Store the pixel buffer temporarily
1017               if(maskLoadState == LoadState::LOADING)
1018               {
1019                 textureInfo.loadState = LoadState::WAITING_FOR_MASK;
1020               }
1021               else if(maskLoadState == LoadState::LOAD_FINISHED || maskLoadState == LoadState::UPLOADED)
1022               {
1023                 // Send New Task to Thread
1024                 TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1025                 if(maskCacheIndex != INVALID_CACHE_INDEX)
1026                 {
1027                   TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1028                   if(maskTextureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER)
1029                   {
1030                     // Send New Task to Thread
1031                     ApplyMask(textureInfo, textureInfo.maskTextureId);
1032                   }
1033                   else if(maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1034                   {
1035                     // Upload image texture. textureInfo.loadState will be UPLOADED.
1036                     UploadTextures(pixelBuffers, textureInfo);
1037                     if(maskTextureInfo.textureSet.GetTextureCount() > 0u)
1038                     {
1039                       Texture maskTexture = maskTextureInfo.textureSet.GetTexture(0u);
1040                       textureInfo.textureSet.SetTexture(1u, maskTexture);
1041                     }
1042                     // notify mask texture set.
1043                     NotifyObservers(textureInfo, true);
1044                   }
1045                 }
1046               }
1047               else // maskLoadState == LoadState::LOAD_FAILED
1048               {
1049                 // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1050                 DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1051                 UploadTextures(pixelBuffers, textureInfo);
1052                 NotifyObservers(textureInfo, true);
1053               }
1054             }
1055           }
1056           else
1057           {
1058             UploadTextures(pixelBuffers, textureInfo);
1059             NotifyObservers(textureInfo, true);
1060           }
1061         }
1062         else
1063         {
1064           textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
1065           textureInfo.loadState   = LoadState::LOAD_FINISHED;
1066
1067           if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1068           {
1069             NotifyObservers(textureInfo, true);
1070           }
1071           else // for the StorageType::KEEP_PIXEL_BUFFER and StorageType::KEEP_TEXTURE
1072           {
1073             // Check if there was another texture waiting for this load to complete
1074             // (e.g. if this was an image mask, and its load is on a different thread)
1075             CheckForWaitingTexture(textureInfo);
1076           }
1077         }
1078       }
1079     }
1080     else
1081     {
1082       // YUV case
1083       // No atlas support for now
1084       textureInfo.useAtlas      = UseAtlas::NO_ATLAS;
1085       textureInfo.preMultiplied = false;
1086
1087       UploadTextures(pixelBuffers, textureInfo);
1088       NotifyObservers(textureInfo, true);
1089     }
1090   }
1091   else
1092   {
1093     textureInfo.loadState = LoadState::LOAD_FAILED;
1094     if(textureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER || textureInfo.storageType == StorageType::KEEP_TEXTURE)
1095     {
1096       // Check if there was another texture waiting for this load to complete
1097       // (e.g. if this was an image mask, and its load is on a different thread)
1098       CheckForWaitingTexture(textureInfo);
1099     }
1100     else
1101     {
1102       NotifyObservers(textureInfo, false);
1103     }
1104   }
1105 }
1106
1107 void TextureManager::CheckForWaitingTexture(TextureManager::TextureInfo& maskTextureInfo)
1108 {
1109   if(maskTextureInfo.loadState == LoadState::LOAD_FINISHED &&
1110      maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1111   {
1112     // Upload mask texture. textureInfo.loadState will be UPLOADED.
1113     std::vector<Devel::PixelBuffer> pixelBuffers;
1114     pixelBuffers.push_back(maskTextureInfo.pixelBuffer);
1115     UploadTextures(pixelBuffers, maskTextureInfo);
1116   }
1117
1118   // Search the cache, checking if any texture has this texture id as a
1119   // maskTextureId:
1120   const std::size_t size = mTextureCacheManager.size();
1121
1122   // TODO : Refactorize here to not iterate whole cached image.
1123   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1124   {
1125     if(mTextureCacheManager[cacheIndex].maskTextureId == maskTextureInfo.textureId &&
1126        mTextureCacheManager[cacheIndex].loadState == LoadState::WAITING_FOR_MASK)
1127     {
1128       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1129
1130       if(maskTextureInfo.loadState == LoadState::LOAD_FINISHED)
1131       {
1132         if(maskTextureInfo.storageType == StorageType::KEEP_PIXEL_BUFFER)
1133         {
1134           // Send New Task to Thread
1135           ApplyMask(textureInfo, maskTextureInfo.textureId);
1136         }
1137       }
1138       else if(maskTextureInfo.loadState == LoadState::UPLOADED)
1139       {
1140         if(maskTextureInfo.storageType == StorageType::KEEP_TEXTURE)
1141         {
1142           // Upload image texture. textureInfo.loadState will be UPLOADED.
1143           std::vector<Devel::PixelBuffer> pixelBuffers;
1144           pixelBuffers.push_back(textureInfo.pixelBuffer);
1145           UploadTextures(pixelBuffers, textureInfo);
1146           if(maskTextureInfo.textureSet.GetTextureCount() > 0u)
1147           {
1148             Texture maskTexture = maskTextureInfo.textureSet.GetTexture(0u);
1149             textureInfo.textureSet.SetTexture(1u, maskTexture);
1150           }
1151           // notify mask texture set.
1152           NotifyObservers(textureInfo, true);
1153         }
1154       }
1155       else
1156       {
1157         // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1158         DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1159         std::vector<Devel::PixelBuffer> pixelBuffers;
1160         pixelBuffers.push_back(textureInfo.pixelBuffer);
1161         UploadTextures(pixelBuffers, textureInfo);
1162         NotifyObservers(textureInfo, true);
1163       }
1164     }
1165   }
1166 }
1167
1168 void TextureManager::ApplyMask(TextureManager::TextureInfo& textureInfo, const TextureManager::TextureId& maskTextureId)
1169 {
1170   TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
1171   if(maskCacheIndex != INVALID_CACHE_INDEX)
1172   {
1173     Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
1174     Devel::PixelBuffer pixelBuffer     = textureInfo.pixelBuffer;
1175     textureInfo.pixelBuffer.Reset();
1176
1177     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ApplyMask(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
1178
1179     textureInfo.loadState   = LoadState::MASK_APPLYING;
1180     auto& loadersContainer  = (textureInfo.url.IsLocalResource() || textureInfo.url.IsBufferResource()) ? mAsyncLocalLoaders : mAsyncRemoteLoaders;
1181     auto  loadingHelperIt   = loadersContainer.GetNext();
1182     auto  premultiplyOnLoad = textureInfo.preMultiplyOnLoad ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
1183     DALI_ASSERT_ALWAYS(loadingHelperIt != loadersContainer.End());
1184     loadingHelperIt->ApplyMask(textureInfo.textureId, pixelBuffer, maskPixelBuffer, textureInfo.scaleFactor, textureInfo.cropToMask, premultiplyOnLoad);
1185   }
1186 }
1187
1188 void TextureManager::UploadTextures(std::vector<Devel::PixelBuffer>& pixelBuffers, TextureManager::TextureInfo& textureInfo)
1189 {
1190   if(!pixelBuffers.empty() && textureInfo.loadState != LoadState::UPLOADED && textureInfo.useAtlas != UseAtlas::USE_ATLAS)
1191   {
1192     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "  TextureManager::UploadTextures() New Texture for textureId:%d\n", textureInfo.textureId);
1193
1194     // Check if this pixelBuffer is premultiplied
1195     textureInfo.preMultiplied = pixelBuffers[0].IsAlphaPreMultiplied();
1196
1197     auto& renderingAddOn = RenderingAddOn::Get();
1198     if(renderingAddOn.IsValid())
1199     {
1200       renderingAddOn.CreateGeometry(textureInfo.textureId, pixelBuffers[0]);
1201     }
1202
1203     if(!textureInfo.textureSet)
1204     {
1205       textureInfo.textureSet = TextureSet::New();
1206     }
1207
1208     uint32_t index = 0;
1209     for(auto&& pixelBuffer : pixelBuffers)
1210     {
1211       Texture texture = Texture::New(Dali::TextureType::TEXTURE_2D, pixelBuffer.GetPixelFormat(), pixelBuffer.GetWidth(), pixelBuffer.GetHeight());
1212
1213       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer);
1214       texture.Upload(pixelData);
1215       textureInfo.textureSet.SetTexture(index++, texture);
1216     }
1217   }
1218
1219   // Update the load state.
1220   // Note: This is regardless of success as we care about whether a
1221   // load attempt is in progress or not.  If unsuccessful, a broken
1222   // image is still loaded.
1223   textureInfo.loadState = LoadState::UPLOADED;
1224 }
1225
1226 void TextureManager::NotifyObservers(TextureManager::TextureInfo& textureInfo, const bool& success)
1227 {
1228   TextureId textureId = textureInfo.textureId;
1229
1230   // If there is an observer: Notify the load is complete, whether successful or not,
1231   // and erase it from the list
1232   TextureInfo* info = &textureInfo;
1233
1234   if(info->animatedImageLoading)
1235   {
1236     // If loading failed, we don't need to get frameCount and frameInterval.
1237     if(success)
1238     {
1239       info->frameCount    = info->animatedImageLoading.GetImageCount();
1240       info->frameInterval = info->animatedImageLoading.GetFrameInterval(info->frameIndex);
1241     }
1242     info->animatedImageLoading.Reset();
1243   }
1244
1245   mQueueLoadFlag = true;
1246
1247   // Reverse observer list that we can pop_back the observer.
1248   std::reverse(info->observerList.Begin(), info->observerList.End());
1249
1250   while(info->observerList.Count())
1251   {
1252     TextureUploadObserver* observer = *(info->observerList.End() - 1u);
1253
1254     // During LoadComplete() a Control ResourceReady() signal is emitted.
1255     // During that signal the app may add remove /add Textures (e.g. via
1256     // ImageViews).
1257     // It is possible for observers to be removed from the observer list,
1258     // and it is also possible for the mTextureInfoContainer to be modified,
1259     // invalidating the reference to the textureInfo struct.
1260     // Texture load requests for the same URL are deferred until the end of this
1261     // method.
1262     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::NotifyObservers() textureId:%d url:%s loadState:%s\n", textureId, info->url.GetUrl().c_str(), GET_LOAD_STATE_STRING(info->loadState));
1263
1264     // It is possible for the observer to be deleted.
1265     // Disconnect and remove the observer first.
1266     observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1267
1268     info->observerList.Erase(info->observerList.End() - 1u);
1269
1270     EmitLoadComplete(observer, *info, success);
1271
1272     // Get the textureInfo from the container again as it may have been invalidated.
1273     TextureCacheIndex textureInfoIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1274     if(textureInfoIndex == INVALID_CACHE_INDEX)
1275     {
1276       break; // texture has been removed - can stop.
1277     }
1278     info = &mTextureCacheManager[textureInfoIndex];
1279   }
1280
1281   mQueueLoadFlag = false;
1282   ProcessLoadQueue();
1283   ProcessRemoveQueue();
1284
1285   if(info->storageType == StorageType::RETURN_PIXEL_BUFFER && info->observerList.Count() == 0)
1286   {
1287     Remove(info->textureId, nullptr);
1288   }
1289 }
1290
1291 void TextureManager::ObserverDestroyed(TextureUploadObserver* observer)
1292 {
1293   const std::size_t size = mTextureCacheManager.size();
1294   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1295   {
1296     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1297     for(TextureInfo::ObserverListType::Iterator j = textureInfo.observerList.Begin();
1298         j != textureInfo.observerList.End();)
1299     {
1300       if(*j == observer)
1301       {
1302         j = textureInfo.observerList.Erase(j);
1303       }
1304       else
1305       {
1306         ++j;
1307       }
1308     }
1309   }
1310
1311   // Remove element from the LoadQueue
1312   for(auto&& element : mLoadQueue)
1313   {
1314     if(element.mObserver == observer)
1315     {
1316       element.mObserver = nullptr;
1317     }
1318   }
1319 }
1320
1321 Dali::Geometry TextureManager::GetRenderGeometry(const TextureManager::TextureId& textureId, std::uint32_t& frontElements, std::uint32_t& backElements)
1322 {
1323   return RenderingAddOn::Get().IsValid() ? RenderingAddOn::Get().GetGeometry(textureId, frontElements, backElements) : Geometry();
1324 }
1325
1326 void TextureManager::EmitLoadComplete(TextureUploadObserver* observer, TextureManager::TextureInfo& textureInfo, const bool& success)
1327 {
1328   if(textureInfo.storageType == StorageType::RETURN_PIXEL_BUFFER)
1329   {
1330     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::PIXEL_BUFFER, textureInfo.pixelBuffer, textureInfo.url.GetUrl(), textureInfo.preMultiplied));
1331   }
1332   else if(textureInfo.isAnimatedImageFormat)
1333   {
1334     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::ANIMATED_IMAGE_TEXTURE, textureInfo.textureId, textureInfo.frameCount, textureInfo.frameInterval));
1335   }
1336   else
1337   {
1338     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::TEXTURE, textureInfo.textureId, textureInfo.textureSet, (textureInfo.useAtlas == UseAtlas::USE_ATLAS) ? true : false, textureInfo.atlasRect, textureInfo.preMultiplied));
1339   }
1340 }
1341
1342 } // namespace Internal
1343
1344 } // namespace Toolkit
1345
1346 } // namespace Dali