How to update ADV8005 OSD data in DDR2 memory?

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Hi, 
 How can we update the OSD image data in DDR2 memory? 
 Steven 
 RE: How to update ADV8005 OSD data in DDR2 memory? by Schang : 
 In blimp, OsdImage component has the loadImageData method to load the raw image data from MCU RAM to DDR2 memory and updates the image dynamically. 
 BOOL OSD_loadImageData (HOBJ hObj, UINT8 *data, UINT32 h, UINT32 w); 
 
 The data is raw image data in ARGB888 format, which means a 32-bits data should be {alpha, R, G, B}. And B should be the lowest byte (also supports RGB565, ARGB4444 formats). 
 The width and height must be less than the component width and height.