Ticket Name: RTOS/TDA2E-17: TDA2E-17 OSD

Query Text:
Part Number: TDA2E-17 Tool/software: TI-RTOS Dear Sirs: In the DM81xx platform, there is a link SWOSD for the osd drawing inside the video. And specifically there is a library in M3 which can be used for OSD drawing inside the video with alphablending. According to this article: e2e.ti.com/.../893557 SWOSD in M3 is using a VCOP library to control it. Just want to ask: Is there any similiar library that can be called to draw osd in the video frame in TDA platform? Regards, /ckhsu

Responses:
Hi hsu, There is no VCOP library on TDA platform. Rgds, Brijesh

Hi Brijesh: Thank you for the reply. If there is no VCOP library in the TDA platform, is there any approach than can reach the same DMA copy with a specific transparent color/value as in the DM81xx platform? Or you can suggest me any approach that can achieve the same effect. Regards, /ckhsu

Hi hsu, You could use display pipelines to do blending and transparency between two pipelines. Regards, Brijesh

Hi Brijesh: Pipeline is only for display, what we want is not on the display screen, but in the captured video which would be then send to encode. Regards, /ckhsu

Hi Hsu, You could use DSS Mem2mem path to get back the blended output from DSS into memory. This path need not be connected to the actual display. I think TDA2Ex has 4 pipelines, so you could use 2 for the actual display and other 2 with the WB pipelines to blend to video.. Regards, Brijesh

Hi Brijesh: Thank you very much for pointing out this approach. This idea is quite fantasitic, and I think this is the best approach for us to do the same effect as in DM81xx. Sincerely, /ckhsu