2 * Copyright (c) 2019 Samsung Electronics Co., Ltd.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #include <dali-toolkit/internal/visuals/texture-manager-impl.h>
24 #include <dali/public-api/math/vector4.h>
25 #include <dali/devel-api/adaptor-framework/environment-variable.h>
26 #include <dali/devel-api/adaptor-framework/image-loading.h>
27 #include <dali/devel-api/common/hash.h>
28 #include <dali/devel-api/images/texture-set-image.h>
29 #include <dali/devel-api/adaptor-framework/pixel-buffer.h>
30 #include <dali/integration-api/debug.h>
33 #include <dali-toolkit/internal/image-loader/image-atlas-impl.h>
34 #include <dali-toolkit/public-api/image-loader/sync-image-loader.h>
35 #include <dali-toolkit/internal/visuals/image-atlas-manager.h>
40 constexpr auto DEFAULT_NUMBER_OF_LOCAL_LOADER_THREADS = size_t{4u};
41 constexpr auto DEFAULT_NUMBER_OF_REMOTE_LOADER_THREADS = size_t{8u};
43 constexpr auto NUMBER_OF_LOCAL_LOADER_THREADS_ENV = "DALI_TEXTURE_LOCAL_THREADS";
44 constexpr auto NUMBER_OF_REMOTE_LOADER_THREADS_ENV = "DALI_TEXTURE_REMOTE_THREADS";
46 size_t GetNumberOfThreads(const char* environmentVariable, size_t defaultValue)
48 using Dali::EnvironmentVariable::GetEnvironmentVariable;
49 auto numberString = GetEnvironmentVariable(environmentVariable);
50 auto numberOfThreads = numberString ? std::strtoul(numberString, nullptr, 10) : 0;
51 constexpr auto MAX_NUMBER_OF_THREADS = 100u;
52 DALI_ASSERT_DEBUG( numberOfThreads < MAX_NUMBER_OF_THREADS );
53 return ( numberOfThreads > 0 && numberOfThreads < MAX_NUMBER_OF_THREADS ) ? numberOfThreads : defaultValue;
56 size_t GetNumberOfLocalLoaderThreads()
58 return GetNumberOfThreads(NUMBER_OF_LOCAL_LOADER_THREADS_ENV, DEFAULT_NUMBER_OF_LOCAL_LOADER_THREADS);
61 size_t GetNumberOfRemoteLoaderThreads()
63 return GetNumberOfThreads(NUMBER_OF_REMOTE_LOADER_THREADS_ENV, DEFAULT_NUMBER_OF_REMOTE_LOADER_THREADS);
81 Debug::Filter* gTextureManagerLogFilter = Debug::Filter::New( Debug::NoLogging, false, "LOG_TEXTURE_MANAGER" );
83 #define GET_LOAD_STATE_STRING( loadState ) \
84 loadState == TextureManager::NOT_STARTED ? "NOT_STARTED" : \
85 loadState == TextureManager::LOADING ? "LOADING" : \
86 loadState == TextureManager::LOAD_FINISHED ? "LOAD_FINISHED" : \
87 loadState == TextureManager::WAITING_FOR_MASK ? "WAITING_FOR_MASK" : \
88 loadState == TextureManager::UPLOADED ? "UPLOADED" : \
89 loadState == TextureManager::CANCELLED ? "CANCELLED" : \
90 loadState == TextureManager::LOAD_FAILED ? "LOAD_FAILED" : "Unknown"
94 const uint32_t DEFAULT_ATLAS_SIZE( 1024u ); ///< This size can fit 8 by 8 images of average size 128 * 128
95 const Vector4 FULL_ATLAS_RECT( 0.0f, 0.0f, 1.0f, 1.0f ); ///< UV Rectangle that covers the full Texture
96 const int INVALID_INDEX( -1 ); ///< Invalid index used to represent a non-existant TextureInfo struct
97 const int INVALID_CACHE_INDEX( -1 ); ///< Invalid Cache index
100 void PreMultiply( Devel::PixelBuffer pixelBuffer, TextureManager::MultiplyOnLoad& preMultiplyOnLoad )
102 if( Pixel::HasAlpha( pixelBuffer.GetPixelFormat() ) )
104 if( preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD )
106 pixelBuffer.MultiplyColorByAlpha();
111 preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
115 } // Anonymous namespace
117 TextureManager::MaskingData::MaskingData()
119 mAlphaMaskId( INVALID_TEXTURE_ID ),
120 mContentScaleFactor( 1.0f ),
125 TextureManager::TextureManager()
126 : mAsyncLocalLoaders( GetNumberOfLocalLoaderThreads(), [&]() { return AsyncLoadingHelper(*this); } ),
127 mAsyncRemoteLoaders( GetNumberOfRemoteLoaderThreads(), [&]() { return AsyncLoadingHelper(*this); } ),
129 mLifecycleObservers(),
132 mCurrentTextureId( 0 ),
133 mQueueLoadFlag(false)
137 TextureManager::~TextureManager()
139 for( auto iter = mLifecycleObservers.Begin(), endIter = mLifecycleObservers.End(); iter != endIter; ++iter)
141 (*iter)->TextureManagerDestroyed();
145 TextureSet TextureManager::LoadTexture(
146 const VisualUrl& url, Dali::ImageDimensions desiredSize, Dali::FittingMode::Type fittingMode,
147 Dali::SamplingMode::Type samplingMode, const MaskingDataPointer& maskInfo,
148 bool synchronousLoading, TextureManager::TextureId& textureId, Vector4& textureRect,
149 Dali::ImageDimensions& textureRectSize, bool& atlasingStatus, bool& loadingStatus,
150 Dali::WrapMode::Type wrapModeU, Dali::WrapMode::Type wrapModeV, TextureUploadObserver* textureObserver,
151 AtlasUploadObserver* atlasObserver, ImageAtlasManagerPtr imageAtlasManager, bool orientationCorrection,
152 TextureManager::ReloadPolicy reloadPolicy, TextureManager::MultiplyOnLoad& preMultiplyOnLoad )
154 TextureSet textureSet;
156 loadingStatus = false;
157 textureRect = FULL_ATLAS_RECT;
159 if( VisualUrl::TEXTURE == url.GetProtocolType())
161 std::string location = url.GetLocation();
162 if( location.size() > 0u )
164 TextureId id = std::stoi( location );
165 for( auto&& elem : mExternalTextures )
167 if( elem.textureId == id )
169 preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
170 textureId = elem.textureId;
171 return elem.textureSet;
176 else if( synchronousLoading )
181 Devel::PixelBuffer pixelBuffer = LoadImageFromFile( url.GetUrl(), desiredSize, fittingMode, samplingMode,
182 orientationCorrection );
185 PreMultiply( pixelBuffer, preMultiplyOnLoad );
186 data = Devel::PixelBuffer::Convert(pixelBuffer); // takes ownership of buffer
192 textureSet = TextureSet::New();
193 Devel::PixelBuffer pixelBuffer = LoadImageFromFile( mBrokenImageUrl );
196 PreMultiply( pixelBuffer, preMultiplyOnLoad );
197 data = Devel::PixelBuffer::Convert(pixelBuffer); // takes ownership of buffer
199 Texture texture = Texture::New( Dali::TextureType::TEXTURE_2D, data.GetPixelFormat(),
200 data.GetWidth(), data.GetHeight() );
201 texture.Upload( data );
202 textureSet = TextureSet::New();
203 textureSet.SetTexture( 0u, texture );
207 if( atlasingStatus ) // attempt atlasing
209 textureSet = imageAtlasManager->Add( textureRect, data );
211 if( !textureSet ) // big image, no atlasing or atlasing failed
213 atlasingStatus = false;
214 Texture texture = Texture::New( Dali::TextureType::TEXTURE_2D, data.GetPixelFormat(),
215 data.GetWidth(), data.GetHeight() );
216 texture.Upload( data );
217 textureSet = TextureSet::New();
218 textureSet.SetTexture( 0u, texture );
222 textureRectSize.SetWidth(data.GetWidth());
223 textureRectSize.SetHeight(data.GetHeight());
229 loadingStatus = true;
232 textureSet = imageAtlasManager->Add( textureRect, url.GetUrl(), desiredSize, fittingMode, true, atlasObserver);
234 if( !textureSet ) // big image, no atlasing or atlasing failed
236 atlasingStatus = false;
239 textureId = RequestLoad( url, desiredSize, fittingMode, samplingMode, TextureManager::NO_ATLAS,
240 textureObserver, orientationCorrection, reloadPolicy, preMultiplyOnLoad );
244 textureId = RequestLoad( url,
245 maskInfo->mAlphaMaskId,
246 maskInfo->mContentScaleFactor,
248 fittingMode, samplingMode,
249 TextureManager::NO_ATLAS,
250 maskInfo->mCropToMask,
252 orientationCorrection,
253 reloadPolicy, preMultiplyOnLoad );
256 TextureManager::LoadState loadState = GetTextureStateInternal( textureId );
257 if( loadState == TextureManager::UPLOADED )
259 // UploadComplete has already been called - keep the same texture set
260 textureSet = GetTextureSet( textureId );
263 // If we are loading the texture, or waiting for the ready signal handler to complete, inform
264 // caller that they need to wait.
265 loadingStatus = ( loadState == TextureManager::LOADING ||
266 loadState == TextureManager::NOT_STARTED ||
272 textureRectSize = desiredSize;
276 if( ! atlasingStatus && textureSet )
278 Sampler sampler = Sampler::New();
279 sampler.SetWrapMode( wrapModeU, wrapModeV );
280 textureSet.SetSampler( 0u, sampler );
286 TextureManager::TextureId TextureManager::RequestLoad(
287 const VisualUrl& url,
288 const ImageDimensions desiredSize,
289 FittingMode::Type fittingMode,
290 Dali::SamplingMode::Type samplingMode,
291 const UseAtlas useAtlas,
292 TextureUploadObserver* observer,
293 bool orientationCorrection,
294 TextureManager::ReloadPolicy reloadPolicy,
295 TextureManager::MultiplyOnLoad& preMultiplyOnLoad )
297 return RequestLoadInternal( url, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, useAtlas,
298 false, UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy,
302 TextureManager::TextureId TextureManager::RequestLoad(
303 const VisualUrl& url,
304 TextureId maskTextureId,
306 const ImageDimensions desiredSize,
307 FittingMode::Type fittingMode,
308 Dali::SamplingMode::Type samplingMode,
309 const UseAtlas useAtlas,
311 TextureUploadObserver* observer,
312 bool orientationCorrection,
313 TextureManager::ReloadPolicy reloadPolicy,
314 TextureManager::MultiplyOnLoad& preMultiplyOnLoad )
316 return RequestLoadInternal( url, maskTextureId, contentScale, desiredSize, fittingMode, samplingMode, useAtlas,
317 cropToMask, UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy,
321 TextureManager::TextureId TextureManager::RequestMaskLoad( const VisualUrl& maskUrl )
323 // Use the normal load procedure to get the alpha mask.
324 auto preMultiply = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
325 return RequestLoadInternal( maskUrl, INVALID_TEXTURE_ID, 1.0f, ImageDimensions(), FittingMode::SCALE_TO_FILL,
326 SamplingMode::NO_FILTER, NO_ATLAS, false, KEEP_PIXEL_BUFFER, NULL, true,
327 TextureManager::ReloadPolicy::CACHED, preMultiply );
330 TextureManager::TextureId TextureManager::RequestLoadInternal(
331 const VisualUrl& url,
332 TextureId maskTextureId,
334 const ImageDimensions desiredSize,
335 FittingMode::Type fittingMode,
336 Dali::SamplingMode::Type samplingMode,
339 StorageType storageType,
340 TextureUploadObserver* observer,
341 bool orientationCorrection,
342 TextureManager::ReloadPolicy reloadPolicy,
343 TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
345 // First check if the requested Texture is cached.
346 const TextureHash textureHash = GenerateHash( url.GetUrl(), desiredSize, fittingMode, samplingMode, useAtlas,
349 TextureManager::TextureId textureId = INVALID_TEXTURE_ID;
351 // Look up the texture by hash. Note: The extra parameters are used in case of a hash collision.
352 int cacheIndex = FindCachedTexture( textureHash, url.GetUrl(), desiredSize, fittingMode, samplingMode, useAtlas,
353 maskTextureId, preMultiplyOnLoad );
355 // Check if the requested Texture exists in the cache.
356 if( cacheIndex != INVALID_CACHE_INDEX )
358 if ( TextureManager::ReloadPolicy::CACHED == reloadPolicy )
360 // Mark this texture being used by another client resource. Forced reload would replace the current texture
361 // without the need for incrementing the reference count.
362 ++( mTextureInfoContainer[ cacheIndex ].referenceCount );
364 textureId = mTextureInfoContainer[ cacheIndex ].textureId;
365 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) Using cached texture id@%d, textureId=%d\n",
366 url.GetUrl().c_str(), observer, cacheIndex, textureId );
369 if( textureId == INVALID_TEXTURE_ID ) // There was no caching, or caching not required
371 // We need a new Texture.
372 textureId = GenerateUniqueTextureId();
373 bool preMultiply = ( preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD );
374 mTextureInfoContainer.push_back( TextureInfo( textureId, maskTextureId, url.GetUrl(),
375 desiredSize, contentScale, fittingMode, samplingMode,
376 false, cropToMask, useAtlas, textureHash, orientationCorrection,
378 cacheIndex = mTextureInfoContainer.size() - 1u;
380 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) New texture, cacheIndex:%d, textureId=%d\n",
381 url.GetUrl().c_str(), observer, cacheIndex, textureId );
384 // The below code path is common whether we are using the cache or not.
385 // The textureInfoIndex now refers to either a pre-existing cached TextureInfo,
386 // or a new TextureInfo just created.
387 TextureInfo& textureInfo( mTextureInfoContainer[ cacheIndex ] );
388 textureInfo.maskTextureId = maskTextureId;
389 textureInfo.storageType = storageType;
390 textureInfo.orientationCorrection = orientationCorrection;
392 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::General, "TextureInfo loadState:%s\n",
393 GET_LOAD_STATE_STRING(textureInfo.loadState ) );
395 // Force reloading of texture by setting loadState unless already loading or cancelled.
396 if ( TextureManager::ReloadPolicy::FORCED == reloadPolicy && TextureManager::LOADING != textureInfo.loadState &&
397 TextureManager::CANCELLED != textureInfo.loadState )
399 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::Verbose, "TextureManager::RequestLoad( url=%s observer=%p ) ForcedReload cacheIndex:%d, textureId=%d\n",
400 url.GetUrl().c_str(), observer, cacheIndex, textureId );
401 textureInfo.loadState = TextureManager::NOT_STARTED;
404 // Check if we should add the observer.
405 // Only do this if we have not loaded yet and it will not have loaded by the end of this method.
406 switch( textureInfo.loadState )
408 case TextureManager::LOAD_FAILED: // Failed notifies observer which then stops observing.
409 case TextureManager::NOT_STARTED:
411 LoadOrQueueTexture( textureInfo, observer ); // If called inside NotifyObservers, queues until afterwards
414 case TextureManager::LOADING:
416 ObserveTexture( textureInfo, observer );
419 case TextureManager::UPLOADED:
423 LoadOrQueueTexture( textureInfo, observer );
427 case TextureManager::CANCELLED:
429 // A cancelled texture hasn't finished loading yet. Treat as a loading texture
430 // (it's ref count has already been incremented, above)
431 textureInfo.loadState = TextureManager::LOADING;
432 ObserveTexture( textureInfo, observer );
435 case TextureManager::LOAD_FINISHED:
436 case TextureManager::WAITING_FOR_MASK:
437 // Loading has already completed. Do nothing.
441 // Return the TextureId for which this Texture can now be referenced by externally.
445 void TextureManager::Remove( const TextureManager::TextureId textureId )
447 int textureInfoIndex = GetCacheIndexFromId( textureId );
448 if( textureInfoIndex != INVALID_INDEX )
450 TextureInfo& textureInfo( mTextureInfoContainer[ textureInfoIndex ] );
452 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::Concise,
453 "TextureManager::Remove(%d) url:%s\n cacheIdx:%d loadState:%s\n",
454 textureId, textureInfo.url.GetUrl().c_str(),
455 textureInfoIndex, GET_LOAD_STATE_STRING( textureInfo.loadState ) );
457 // Decrement the reference count and check if this is the last user of this Texture.
458 if( --textureInfo.referenceCount <= 0 )
460 // This is the last remove for this Texture.
461 textureInfo.referenceCount = 0;
462 bool removeTextureInfo = false;
464 // If loaded, we can remove the TextureInfo and the Atlas (if atlased).
465 if( textureInfo.loadState == UPLOADED )
467 if( textureInfo.atlas )
469 textureInfo.atlas.Remove( textureInfo.atlasRect );
471 removeTextureInfo = true;
473 else if( textureInfo.loadState == LOADING )
475 // We mark the textureInfo for removal.
476 // Once the load has completed, this method will be called again.
477 textureInfo.loadState = CANCELLED;
481 // In other states, we are not waiting for a load so we are safe to remove the TextureInfo data.
482 removeTextureInfo = true;
485 // If the state allows us to remove the TextureInfo data, we do so.
486 if( removeTextureInfo )
488 // Permanently remove the textureInfo struct.
489 mTextureInfoContainer.erase( mTextureInfoContainer.begin() + textureInfoIndex );
495 VisualUrl TextureManager::GetVisualUrl( TextureId textureId )
497 VisualUrl visualUrl("");
498 int cacheIndex = GetCacheIndexFromId( textureId );
500 if( cacheIndex != INVALID_CACHE_INDEX )
502 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::Concise, "TextureManager::GetVisualUrl. Using cached texture id=%d, textureId=%d\n",
503 cacheIndex, textureId );
505 TextureInfo& cachedTextureInfo( mTextureInfoContainer[ cacheIndex ] );
506 visualUrl = cachedTextureInfo.url;
511 TextureManager::LoadState TextureManager::GetTextureState( TextureId textureId )
513 LoadState loadState = TextureManager::NOT_STARTED;
515 int cacheIndex = GetCacheIndexFromId( textureId );
516 if( cacheIndex != INVALID_CACHE_INDEX )
518 TextureInfo& cachedTextureInfo( mTextureInfoContainer[ cacheIndex ] );
519 loadState = cachedTextureInfo.loadState;
523 for( auto&& elem : mExternalTextures )
525 if( elem.textureId == textureId )
527 loadState = LoadState::UPLOADED;
535 TextureManager::LoadState TextureManager::GetTextureStateInternal( TextureId textureId )
537 LoadState loadState = TextureManager::NOT_STARTED;
539 int cacheIndex = GetCacheIndexFromId( textureId );
540 if( cacheIndex != INVALID_CACHE_INDEX )
542 TextureInfo& cachedTextureInfo( mTextureInfoContainer[ cacheIndex ] );
543 loadState = cachedTextureInfo.loadState;
549 TextureSet TextureManager::GetTextureSet( TextureId textureId )
551 TextureSet textureSet;// empty handle
553 int cacheIndex = GetCacheIndexFromId( textureId );
554 if( cacheIndex != INVALID_CACHE_INDEX )
556 TextureInfo& cachedTextureInfo( mTextureInfoContainer[ cacheIndex ] );
557 textureSet = cachedTextureInfo.textureSet;
561 for( auto&& elem : mExternalTextures )
563 if( elem.textureId == textureId )
565 textureSet = elem.textureSet;
573 std::string TextureManager::AddExternalTexture( TextureSet& textureSet )
575 TextureManager::ExternalTextureInfo info;
576 info.textureId = GenerateUniqueTextureId();
577 info.textureSet = textureSet;
578 mExternalTextures.emplace_back( info );
579 return VisualUrl::CreateTextureUrl( std::to_string( info.textureId ) );
582 TextureSet TextureManager::RemoveExternalTexture( const std::string& url )
584 if( url.size() > 0u )
586 // get the location from the Url
587 VisualUrl parseUrl( url );
588 if( VisualUrl::TEXTURE == parseUrl.GetProtocolType() )
590 std::string location = parseUrl.GetLocation();
591 if( location.size() > 0u )
593 TextureId id = std::stoi( location );
594 const auto end = mExternalTextures.end();
595 for( auto iter = mExternalTextures.begin(); iter != end; ++iter )
597 if( iter->textureId == id )
599 auto textureSet = iter->textureSet;
600 mExternalTextures.erase( iter );
611 void TextureManager::AddObserver( TextureManager::LifecycleObserver& observer )
613 // make sure an observer doesn't observe the same object twice
614 // otherwise it will get multiple calls to ObjectDestroyed()
615 DALI_ASSERT_DEBUG( mLifecycleObservers.End() == std::find( mLifecycleObservers.Begin(), mLifecycleObservers.End(), &observer));
616 mLifecycleObservers.PushBack( &observer );
619 void TextureManager::RemoveObserver( TextureManager::LifecycleObserver& observer)
621 // Find the observer...
622 auto endIter = mLifecycleObservers.End();
623 for( auto iter = mLifecycleObservers.Begin(); iter != endIter; ++iter)
625 if( (*iter) == &observer)
627 mLifecycleObservers.Erase( iter );
631 DALI_ASSERT_DEBUG(endIter != mLifecycleObservers.End());
634 void TextureManager::LoadOrQueueTexture( TextureInfo& textureInfo, TextureUploadObserver* observer )
636 switch( textureInfo.loadState )
643 QueueLoadTexture( textureInfo, observer );
647 LoadTexture( textureInfo, observer );
656 QueueLoadTexture( textureInfo, observer );
660 // The Texture has already loaded. The other observers have already been notified.
661 // We need to send a "late" loaded notification for this observer.
662 observer->UploadComplete( true, textureInfo.textureId, textureInfo.textureSet,
663 textureInfo.useAtlas, textureInfo.atlasRect,
664 textureInfo.preMultiplied );
670 case WAITING_FOR_MASK:
677 void TextureManager::QueueLoadTexture( TextureInfo& textureInfo, TextureUploadObserver* observer )
679 auto textureId = textureInfo.textureId;
680 mLoadQueue.PushBack( LoadQueueElement( textureId, observer) );
683 void TextureManager::LoadTexture( TextureInfo& textureInfo, TextureUploadObserver* observer )
685 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::Concise, "TextureManager::LoadTexture(): url:%s sync:%s\n",
686 textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously?"T":"F" );
688 textureInfo.loadState = LOADING;
689 if( !textureInfo.loadSynchronously )
691 auto& loadersContainer = textureInfo.url.IsLocalResource() ? mAsyncLocalLoaders : mAsyncRemoteLoaders;
692 auto loadingHelperIt = loadersContainer.GetNext();
693 DALI_ASSERT_ALWAYS(loadingHelperIt != loadersContainer.End());
694 loadingHelperIt->Load(textureInfo.textureId, textureInfo.url,
695 textureInfo.desiredSize, textureInfo.fittingMode,
696 textureInfo.samplingMode, textureInfo.orientationCorrection );
698 ObserveTexture( textureInfo, observer );
701 void TextureManager::ProcessQueuedTextures()
703 for( auto&& element : mLoadQueue )
705 int cacheIndex = GetCacheIndexFromId( element.mTextureId );
706 if( cacheIndex != INVALID_CACHE_INDEX )
708 TextureInfo& textureInfo( mTextureInfoContainer[cacheIndex] );
709 if( textureInfo.loadState == UPLOADED )
711 element.mObserver->UploadComplete( true, textureInfo.textureId, textureInfo.textureSet,
712 textureInfo.useAtlas, textureInfo.atlasRect,
713 textureInfo.preMultiplied );
717 LoadTexture( textureInfo, element.mObserver );
724 void TextureManager::ObserveTexture( TextureInfo& textureInfo,
725 TextureUploadObserver* observer )
727 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::Concise, "TextureManager::ObserveTexture(): url:%s observer:%p\n",
728 textureInfo.url.GetUrl().c_str(), observer );
732 textureInfo.observerList.PushBack( observer );
733 observer->DestructionSignal().Connect( this, &TextureManager::ObserverDestroyed );
737 void TextureManager::AsyncLoadComplete( AsyncLoadingInfoContainerType& loadingContainer, uint32_t id,
738 Devel::PixelBuffer pixelBuffer )
740 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::Concise, "TextureManager::AsyncLoadComplete( id:%d )\n", id );
742 if( loadingContainer.size() >= 1u )
744 AsyncLoadingInfo loadingInfo = loadingContainer.front();
746 if( loadingInfo.loadId == id )
748 int cacheIndex = GetCacheIndexFromId( loadingInfo.textureId );
749 if( cacheIndex != INVALID_CACHE_INDEX )
751 TextureInfo& textureInfo( mTextureInfoContainer[cacheIndex] );
753 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::Concise,
754 " textureId:%d Url:%s CacheIndex:%d LoadState: %d\n",
755 textureInfo.textureId, textureInfo.url.GetUrl().c_str(), cacheIndex, textureInfo.loadState );
757 if( textureInfo.loadState != CANCELLED )
759 // textureInfo can be invalidated after this call (as the mTextureInfoContainer may be modified)
760 PostLoad( textureInfo, pixelBuffer );
764 Remove( textureInfo.textureId );
769 loadingContainer.pop_front();
773 void TextureManager::PostLoad( TextureInfo& textureInfo, Devel::PixelBuffer& pixelBuffer )
775 // Was the load successful?
776 if( pixelBuffer && ( pixelBuffer.GetWidth() != 0 ) && ( pixelBuffer.GetHeight() != 0 ) )
778 // No atlas support for now
779 textureInfo.useAtlas = NO_ATLAS;
781 if( textureInfo.storageType == UPLOAD_TO_TEXTURE )
783 // If there is a mask texture ID associated with this texture, then apply the mask
784 // if it's already loaded. If it hasn't, and the mask is still loading,
785 // wait for the mask to finish loading.
786 if( textureInfo.maskTextureId != INVALID_TEXTURE_ID )
788 LoadState maskLoadState = GetTextureStateInternal( textureInfo.maskTextureId );
789 if( maskLoadState == LOADING )
791 textureInfo.pixelBuffer = pixelBuffer; // Store the pixel buffer temporarily
792 textureInfo.loadState = WAITING_FOR_MASK;
794 else if( maskLoadState == LOAD_FINISHED )
796 ApplyMask( pixelBuffer, textureInfo.maskTextureId, textureInfo.scaleFactor, textureInfo.cropToMask );
797 UploadTexture( pixelBuffer, textureInfo );
798 NotifyObservers( textureInfo, true );
803 UploadTexture( pixelBuffer, textureInfo );
804 NotifyObservers( textureInfo, true );
809 textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
810 textureInfo.loadState = LOAD_FINISHED;
812 // Check if there was another texture waiting for this load to complete
813 // (e.g. if this was an image mask, and its load is on a different thread)
814 CheckForWaitingTexture( textureInfo );
819 DALI_LOG_ERROR( "TextureManager::AsyncImageLoad(%s) failed\n", textureInfo.url.GetUrl().c_str() );
820 // @todo If the load was unsuccessful, upload the broken image.
821 textureInfo.loadState = LOAD_FAILED;
822 CheckForWaitingTexture( textureInfo );
823 NotifyObservers( textureInfo, false );
827 void TextureManager::CheckForWaitingTexture( TextureInfo& maskTextureInfo )
829 // Search the cache, checking if any texture has this texture id as a
831 const unsigned int size = mTextureInfoContainer.size();
833 for( unsigned int cacheIndex = 0; cacheIndex < size; ++cacheIndex )
835 if( mTextureInfoContainer[cacheIndex].maskTextureId == maskTextureInfo.textureId &&
836 mTextureInfoContainer[cacheIndex].loadState == WAITING_FOR_MASK )
838 TextureInfo& textureInfo( mTextureInfoContainer[cacheIndex] );
839 Devel::PixelBuffer pixelBuffer = textureInfo.pixelBuffer;
840 textureInfo.pixelBuffer.Reset();
842 if( maskTextureInfo.loadState == LOAD_FINISHED )
844 ApplyMask( pixelBuffer, maskTextureInfo.textureId, textureInfo.scaleFactor, textureInfo.cropToMask );
845 UploadTexture( pixelBuffer, textureInfo );
846 NotifyObservers( textureInfo, true );
850 DALI_LOG_ERROR( "TextureManager::ApplyMask to %s failed\n", textureInfo.url.GetUrl().c_str() );
851 textureInfo.loadState = LOAD_FAILED;
852 NotifyObservers( textureInfo, false );
858 void TextureManager::ApplyMask(
859 Devel::PixelBuffer& pixelBuffer, TextureId maskTextureId,
860 float contentScale, bool cropToMask )
862 int maskCacheIndex = GetCacheIndexFromId( maskTextureId );
863 if( maskCacheIndex != INVALID_CACHE_INDEX )
865 Devel::PixelBuffer maskPixelBuffer = mTextureInfoContainer[maskCacheIndex].pixelBuffer;
866 pixelBuffer.ApplyMask( maskPixelBuffer, contentScale, cropToMask );
870 void TextureManager::UploadTexture( Devel::PixelBuffer& pixelBuffer, TextureInfo& textureInfo )
872 if( textureInfo.useAtlas != USE_ATLAS )
874 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::General, " TextureManager::UploadTexture() New Texture for textureId:%d\n", textureInfo.textureId );
876 // If the texture doesn't have an alpha channel, can't pre-multiply it.
877 // Ensure that we don't change the load parameter (it's used for hashing), and instead set
878 // the status for use in the observer.
879 auto preMultiply = textureInfo.preMultiplyOnLoad ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD :
880 TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
881 PreMultiply( pixelBuffer, preMultiply );
882 textureInfo.preMultiplied = (preMultiply == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD );
884 Texture texture = Texture::New( Dali::TextureType::TEXTURE_2D, pixelBuffer.GetPixelFormat(),
885 pixelBuffer.GetWidth(), pixelBuffer.GetHeight() );
887 PixelData pixelData = Devel::PixelBuffer::Convert( pixelBuffer );
888 texture.Upload( pixelData );
889 if ( ! textureInfo.textureSet )
891 textureInfo.textureSet = TextureSet::New();
893 textureInfo.textureSet.SetTexture( 0u, texture );
896 // Update the load state.
897 // Note: This is regardless of success as we care about whether a
898 // load attempt is in progress or not. If unsuccessful, a broken
899 // image is still loaded.
900 textureInfo.loadState = UPLOADED;
903 void TextureManager::NotifyObservers( TextureInfo& textureInfo, bool success )
905 TextureId textureId = textureInfo.textureId;
907 // If there is an observer: Notify the load is complete, whether successful or not,
908 // and erase it from the list
909 TextureInfo* info = &textureInfo;
911 mQueueLoadFlag = true;
913 while( info->observerList.Count() )
915 TextureUploadObserver* observer = info->observerList[0];
917 // During UploadComplete() a Control ResourceReady() signal is emitted.
918 // During that signal the app may add remove /add Textures (e.g. via
920 // It is possible for observers to be removed from the observer list,
921 // and it is also possible for the mTextureInfoContainer to be modified,
922 // invalidating the reference to the textureInfo struct.
923 // Texture load requests for the same URL are deferred until the end of this
925 DALI_LOG_INFO( gTextureManagerLogFilter, Debug::Concise, "NotifyObservers() url:%s loadState:%s\n",
926 textureInfo.url.GetUrl().c_str(), GET_LOAD_STATE_STRING(textureInfo.loadState ) );
928 observer->UploadComplete( success, info->textureId, info->textureSet, info->useAtlas, info->atlasRect,
929 info->preMultiplied );
930 observer->DestructionSignal().Disconnect( this, &TextureManager::ObserverDestroyed );
932 // Get the textureInfo from the container again as it may have been invalidated.
933 int textureInfoIndex = GetCacheIndexFromId( textureId );
934 if( textureInfoIndex == INVALID_CACHE_INDEX)
936 break; // texture has been removed - can stop.
938 info = &mTextureInfoContainer[ textureInfoIndex ];
940 // remove the observer that was just triggered if it's still in the list
941 for( TextureInfo::ObserverListType::Iterator j = info->observerList.Begin(); j != info->observerList.End(); ++j )
945 info->observerList.Erase( j );
951 mQueueLoadFlag = false;
952 ProcessQueuedTextures();
955 TextureManager::TextureId TextureManager::GenerateUniqueTextureId()
957 return mCurrentTextureId++;
960 int TextureManager::GetCacheIndexFromId( const TextureId textureId )
962 const unsigned int size = mTextureInfoContainer.size();
964 for( unsigned int i = 0; i < size; ++i )
966 if( mTextureInfoContainer[i].textureId == textureId )
972 return INVALID_CACHE_INDEX;
975 TextureManager::TextureHash TextureManager::GenerateHash(
976 const std::string& url,
977 const ImageDimensions size,
978 const FittingMode::Type fittingMode,
979 const Dali::SamplingMode::Type samplingMode,
980 const UseAtlas useAtlas,
981 TextureId maskTextureId )
983 std::string hashTarget( url );
984 const size_t urlLength = hashTarget.length();
985 const uint16_t width = size.GetWidth();
986 const uint16_t height = size.GetWidth();
988 // If either the width or height has been specified, include the resizing options in the hash
989 if( width != 0 || height != 0 )
991 // We are appending 5 bytes to the URL to form the hash input.
992 hashTarget.resize( urlLength + 5u );
993 char* hashTargetPtr = &( hashTarget[ urlLength ] );
995 // Pack the width and height (4 bytes total).
996 *hashTargetPtr++ = size.GetWidth() & 0xff;
997 *hashTargetPtr++ = ( size.GetWidth() >> 8u ) & 0xff;
998 *hashTargetPtr++ = size.GetHeight() & 0xff;
999 *hashTargetPtr++ = ( size.GetHeight() >> 8u ) & 0xff;
1001 // Bit-pack the FittingMode, SamplingMode and atlasing.
1002 // FittingMode=2bits, SamplingMode=3bits, useAtlas=1bit
1003 *hashTargetPtr = ( fittingMode << 4u ) | ( samplingMode << 1 ) | useAtlas;
1007 // We are not including sizing information, but we still need an extra byte for atlasing.
1008 hashTarget.resize( urlLength + 1u );
1010 // Add the atlasing to the hash input.
1013 case UseAtlas::NO_ATLAS:
1015 hashTarget[ urlLength ] = 'f';
1018 case UseAtlas::USE_ATLAS:
1020 hashTarget[ urlLength ] = 't';
1026 if( maskTextureId != INVALID_TEXTURE_ID )
1028 auto textureIdIndex = hashTarget.length();
1029 hashTarget.resize( hashTarget.length() + sizeof( TextureId ) );
1030 unsigned char* hashTargetPtr = reinterpret_cast<unsigned char*>(&( hashTarget[ textureIdIndex ] ));
1032 // Append the texture id to the end of the URL byte by byte:
1033 // (to avoid SIGBUS / alignment issues)
1034 for( size_t byteIter = 0; byteIter < sizeof( TextureId ); ++byteIter )
1036 *hashTargetPtr++ = maskTextureId & 0xff;
1037 maskTextureId >>= 8u;
1041 return Dali::CalculateHash( hashTarget );
1044 int TextureManager::FindCachedTexture(
1045 const TextureManager::TextureHash hash,
1046 const std::string& url,
1047 const ImageDimensions size,
1048 const FittingMode::Type fittingMode,
1049 const Dali::SamplingMode::Type samplingMode,
1050 const bool useAtlas,
1051 TextureId maskTextureId,
1052 TextureManager::MultiplyOnLoad preMultiplyOnLoad )
1054 // Default to an invalid ID, in case we do not find a match.
1055 int cacheIndex = INVALID_CACHE_INDEX;
1057 // Iterate through our hashes to find a match.
1058 const unsigned int count = mTextureInfoContainer.size();
1059 for( unsigned int i = 0u; i < count; ++i )
1061 if( mTextureInfoContainer[i].hash == hash )
1063 // We have a match, now we check all the original parameters in case of a hash collision.
1064 TextureInfo& textureInfo( mTextureInfoContainer[i] );
1066 if( ( url == textureInfo.url.GetUrl() ) &&
1067 ( useAtlas == textureInfo.useAtlas ) &&
1068 ( maskTextureId == textureInfo.maskTextureId ) &&
1069 ( size == textureInfo.desiredSize ) &&
1070 ( ( size.GetWidth() == 0 && size.GetHeight() == 0 ) ||
1071 ( fittingMode == textureInfo.fittingMode &&
1072 samplingMode == textureInfo.samplingMode ) ) )
1074 // 1. If preMultiplyOnLoad is MULTIPLY_ON_LOAD, then textureInfo.preMultiplyOnLoad should be true. The premultiplication result can be different.
1075 // 2. If preMultiplyOnLoad is LOAD_WITHOUT_MULTIPLY, then textureInfo.preMultiplied should be false.
1076 if( ( preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD && textureInfo.preMultiplyOnLoad )
1077 || ( preMultiplyOnLoad == TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY && !textureInfo.preMultiplied ) )
1079 // The found Texture is a match.
1090 void TextureManager::ObserverDestroyed( TextureUploadObserver* observer )
1092 const unsigned int count = mTextureInfoContainer.size();
1093 for( unsigned int i = 0; i < count; ++i )
1095 TextureInfo& textureInfo( mTextureInfoContainer[i] );
1096 for( TextureInfo::ObserverListType::Iterator j = textureInfo.observerList.Begin();
1097 j != textureInfo.observerList.End(); )
1099 if( *j == observer )
1101 j = textureInfo.observerList.Erase( j );
1112 TextureManager::AsyncLoadingHelper::AsyncLoadingHelper(TextureManager& textureManager)
1113 : AsyncLoadingHelper(Toolkit::AsyncImageLoader::New(), textureManager,
1114 AsyncLoadingInfoContainerType())
1118 void TextureManager::AsyncLoadingHelper::Load(TextureId textureId,
1119 const VisualUrl& url,
1120 ImageDimensions desiredSize,
1121 FittingMode::Type fittingMode,
1122 SamplingMode::Type samplingMode,
1123 bool orientationCorrection)
1125 mLoadingInfoContainer.push_back(AsyncLoadingInfo(textureId));
1126 auto id = mLoader.Load(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
1127 mLoadingInfoContainer.back().loadId = id;
1130 TextureManager::AsyncLoadingHelper::AsyncLoadingHelper(AsyncLoadingHelper&& rhs)
1131 : AsyncLoadingHelper(rhs.mLoader, rhs.mTextureManager, std::move(rhs.mLoadingInfoContainer))
1135 TextureManager::AsyncLoadingHelper::AsyncLoadingHelper(
1136 Toolkit::AsyncImageLoader loader,
1137 TextureManager& textureManager,
1138 AsyncLoadingInfoContainerType&& loadingInfoContainer)
1140 mTextureManager(textureManager),
1141 mLoadingInfoContainer(std::move(loadingInfoContainer))
1143 DevelAsyncImageLoader::PixelBufferLoadedSignal(mLoader).Connect(
1144 this, &AsyncLoadingHelper::AsyncLoadComplete);
1147 void TextureManager::AsyncLoadingHelper::AsyncLoadComplete(uint32_t id,
1148 Devel::PixelBuffer pixelBuffer)
1150 mTextureManager.AsyncLoadComplete(mLoadingInfoContainer, id, pixelBuffer);
1153 void TextureManager::SetBrokenImageUrl(const std::string& brokenImageUrl)
1155 mBrokenImageUrl = brokenImageUrl;
1158 } // namespace Internal
1160 } // namespace Toolkit