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