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