Add CURRENT_FRAME_NUMBER and TOTAL_FRAME_NUMBER properties to the AnimatedImageVisual

[platform/core/uifw/dali-toolkit.git] / dali-toolkit / internal / visuals / animated-image / image-cache.h

diff --git a/dali-toolkit/internal/visuals/animated-image/image-cache.h b/dali-toolkit/internal/visuals/animated-image/image-cache.h
index 1a7ae75..adb6e58 100644 (file)
--- a/dali-toolkit/internal/visuals/animated-image/image-cache.h
+++ b/dali-toolkit/internal/visuals/animated-image/image-cache.h
@@ -2,7 +2,7 @@
 #define DALI_TOOLKIT_INTERNAL_IMAGE_CACHE_H
 
 /*
- * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2020 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.
@@ -28,7 +28,7 @@ namespace Toolkit
 namespace Internal
 {
 
-class ImageCache
+class ImageCache : public TextureManager::LifecycleObserver
 {
 public:
   /**
@@ -46,7 +46,7 @@ public:
 
   struct UrlStore
   {
-    TextureManager::TextureId mTextureId;
+    TextureManager::TextureId mTextureId = TextureManager::INVALID_TEXTURE_ID;
     std::string mUrl;
   };
 
@@ -81,10 +81,38 @@ public:
   /**
    * Get the next frame. If it's not ready, this will trigger the
    * sending of FrameReady() when the image becomes ready.
-   * This will trigger the loading of the next batch.
    */
   virtual TextureSet NextFrame() = 0;
 
+  /**
+   * Get the Nth frame. If it's not ready, this will trigger the
+   * sending of FrameReady() when the image becomes ready.
+   */
+  virtual TextureSet Frame( uint32_t frameIndex ) = 0;
+
+  /**
+   * Get the interval of Nth frame.
+   */
+  virtual uint32_t GetFrameInterval( uint32_t frameIndex ) const = 0;
+
+  /**
+   * Get the current rendered frame index.
+   * If there isn't any loaded frame, returns -1.
+   */
+  virtual int32_t GetCurrentFrameIndex() const = 0;
+
+  /**
+   * Get total frame count of the animated image file.
+   */
+  virtual int32_t GetTotalFrameCount() const = 0;
+
+private:
+
+  /**
+   * Called before the texture manager is destroyed.
+   */
+  void TextureManagerDestroyed() final;
+
 protected:
   TextureManager&        mTextureManager;
   FrameReadyObserver&    mObserver;
@@ -92,6 +120,7 @@ protected:
   unsigned int           mUrlIndex;
   bool                   mWaitingForReadyFrame:1;
   bool                   mRequestingLoad:1;
+  bool                   mTextureManagerAlive:1;
 };
 
 } //namespace Internal