• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 98 subscribers
  • Views 395 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DM8148 graphic and OSD transparency

kevin.jian
Prodigy 20 points

Hello, TI major:
 I have some development issues need your help.
 
 I develop the function on DM8148. My package version is DVRRDK_02_00_00_23.
 I execute the demo function, use-case 6, to display 4 channels H.264 decoder.
 I can display the logo and draw (dot, line or rectangle)on the SD by frame buffer.
 But I need to do the logo or lines transparence above the video display.
 How and where can I set the alpha value and enable/disable the alpha blending on frame buffer(graphic)?
 Another question, Can I implement the OSD function with alpha blending on use-case 6?

 Thanks for your answer.
 

  • 0
    Expert 1840 points

    I don't know exactly your situation but through my experiences in working with SWOSD of TI, to make the transparencies you should control some parametes of  SWOSD_BmpWinPrm struct such as  transperencyVal, transperencyRange, transperencyEnable. Depend on your OSD background you will choose the proper values for transperencyVal and transperencyRange.