/*
- * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
TextureManager::TextureManager()
: mAsyncLocalLoaders( GetNumberOfLocalLoaderThreads(), [&]() { return AsyncLoadingHelper(*this); } ),
mAsyncRemoteLoaders( GetNumberOfRemoteLoaderThreads(), [&]() { return AsyncLoadingHelper(*this); } ),
- mCurrentTextureId( 0 )
+ mExternalTextures(),
+ mLoadQueue(),
+ mCurrentTextureId( 0 ),
+ mQueueLoadFlag(false)
{
}
}
TextureManager::LoadState loadState = GetTextureStateInternal( textureId );
- loadingStatus = ( loadState == TextureManager::LOADING );
+ switch( loadState )
+ {
+ case TextureManager::NOT_STARTED:
+ case TextureManager::LOADING:
+ case TextureManager::LOAD_FAILED:
+ {
+ loadingStatus = true;
+ break;
+ }
+ default:
+ {
+ loadingStatus = false;
+ break;
+ }
+ }
if( loadState == TextureManager::UPLOADED )
{
case TextureManager::LOAD_FAILED: // Failed notifies observer which then stops observing.
case TextureManager::NOT_STARTED:
{
- LoadTexture( textureInfo );
- ObserveTexture( textureInfo, observer );
+ LoadOrQueueTexture( textureInfo, observer ); // If called inside NotifyObservers, queues until afterwards
break;
}
case TextureManager::LOADING:
return TextureSet();
}
-bool TextureManager::LoadTexture( TextureInfo& textureInfo )
+void TextureManager::LoadOrQueueTexture( TextureInfo& textureInfo, TextureUploadObserver* observer )
{
- bool success = true;
+ switch( textureInfo.loadState )
+ {
+ case NOT_STARTED:
+ case LOAD_FAILED:
+ {
+ if( mQueueLoadFlag )
+ {
+ QueueLoadTexture( textureInfo, observer );
+ }
+ else
+ {
+ LoadTexture( textureInfo, observer );
+ }
+ break;
+ }
+ case LOADING:
+ case UPLOADED:
+ case CANCELLED:
+ case LOAD_FINISHED:
+ case WAITING_FOR_MASK:
+ {
+ break;
+ }
+ }
+}
+
+void TextureManager::QueueLoadTexture( TextureInfo& textureInfo, TextureUploadObserver* observer )
+{
+ auto textureId = textureInfo.textureId;
+ mLoadQueue.PushBack( LoadQueueElement( textureId, observer) );
+}
- if( textureInfo.loadState == NOT_STARTED )
+void TextureManager::LoadTexture( TextureInfo& textureInfo, TextureUploadObserver* observer )
+{
+ textureInfo.loadState = LOADING;
+ if( !textureInfo.loadSynchronously )
{
- textureInfo.loadState = LOADING;
+ auto& loadersContainer = textureInfo.url.IsLocalResource() ? mAsyncLocalLoaders : mAsyncRemoteLoaders;
+ auto loadingHelperIt = loadersContainer.GetNext();
+ DALI_ASSERT_ALWAYS(loadingHelperIt != loadersContainer.End());
+ loadingHelperIt->Load(textureInfo.textureId, textureInfo.url,
+ textureInfo.desiredSize, textureInfo.fittingMode,
+ textureInfo.samplingMode, textureInfo.orientationCorrection );
+ }
+ ObserveTexture( textureInfo, observer );
+}
- if( !textureInfo.loadSynchronously )
+void TextureManager::ProcessQueuedTextures()
+{
+ for( auto&& element : mLoadQueue )
+ {
+ int cacheIndex = GetCacheIndexFromId( element.mTextureId );
+ if( cacheIndex != INVALID_CACHE_INDEX )
{
- auto& loadersContainer = textureInfo.url.IsLocalResource() ? mAsyncLocalLoaders : mAsyncRemoteLoaders;
- auto loadingHelperIt = loadersContainer.GetNext();
- DALI_ASSERT_ALWAYS(loadingHelperIt != loadersContainer.End());
- loadingHelperIt->Load(textureInfo.textureId, textureInfo.url,
- textureInfo.desiredSize, textureInfo.fittingMode,
- textureInfo.samplingMode, textureInfo.orientationCorrection );
+ TextureInfo& textureInfo( mTextureInfoContainer[cacheIndex] );
+ LoadTexture( textureInfo, element.mObserver );
}
}
-
- return success;
+ mLoadQueue.Clear();
}
void TextureManager::ObserveTexture( TextureInfo& textureInfo,
pixelBuffer.ApplyMask( maskPixelBuffer, contentScale, cropToMask );
}
-
void TextureManager::UploadTexture( Devel::PixelBuffer& pixelBuffer, TextureInfo& textureInfo )
{
if( textureInfo.useAtlas != USE_ATLAS )
// If there is an observer: Notify the load is complete, whether successful or not,
// and erase it from the list
- unsigned int observerCount = textureInfo.observerList.Count();
TextureInfo* info = &textureInfo;
- while( observerCount )
+ mQueueLoadFlag = true;
+
+ while( info->observerList.Count() )
{
TextureUploadObserver* observer = info->observerList[0];
// During UploadComplete() a Control ResourceReady() signal is emitted.
// During that signal the app may add remove /add Textures (e.g. via
- // ImageViews). At this point no more observers can be added to the
- // observerList, because textureInfo.loadState = UPLOADED. However it is
- // possible for observers to be removed, hence we check the observer list
- // count every iteration.
-
- // The reference to the textureInfo struct can also become invalidated,
- // because new load requests can modify the mTextureInfoContainer list
- // (e.g. if more requests are pushed back it can cause the list to be
- // resized invalidating the reference to the TextureInfo ).
+ // ImageViews).
+ // It is possible for observers to be removed from the observer list,
+ // and it is also possible for the mTextureInfoContainer to be modified,
+ // invalidating the reference to the textureInfo struct.
+ // Texture load requests for the same URL are deferred until the end of this
+ // method.
observer->UploadComplete( success, info->textureId, info->textureSet, info->useAtlas, info->atlasRect,
info->preMultiplied );
observer->DestructionSignal().Disconnect( this, &TextureManager::ObserverDestroyed );
- // Get the textureInfo from the container again as it may have been
- // invalidated,
-
+ // Get the textureInfo from the container again as it may have been invalidated.
int textureInfoIndex = GetCacheIndexFromId( textureId );
if( textureInfoIndex == INVALID_CACHE_INDEX)
{
+ mQueueLoadFlag = false;
+ ProcessQueuedTextures();
return; // texture has been removed - can stop.
}
-
info = &mTextureInfoContainer[ textureInfoIndex ];
- observerCount = info->observerList.Count();
- if ( observerCount > 0 )
+
+ // remove the observer that was just triggered if it's still in the list
+ for( TextureInfo::ObserverListType::Iterator j = info->observerList.Begin(); j != info->observerList.End(); ++j )
{
- // remove the observer that was just triggered if it's still in the list
- for( TextureInfo::ObserverListType::Iterator j = info->observerList.Begin(); j != info->observerList.End(); ++j )
+ if( *j == observer )
{
- if( *j == observer )
- {
- info->observerList.Erase( j );
- observerCount--;
- break;
- }
+ info->observerList.Erase( j );
+ break;
}
}
}
+
+ mQueueLoadFlag = false;
+ ProcessQueuedTextures();
}
TextureManager::TextureId TextureManager::GenerateUniqueTextureId()
projects / platform / core / uifw / dali-toolkit.git / blobdiff