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