Text Overlay

Willem Buitendyk

I'm researching Davinci and am wondering how to implement text overlay and time searching on the video data stream. Are there any examples in the development kit regarding either of these items?

Thanks,

Willem

over 17 years ago

0 Juan Gonzales over 17 years ago

TI__Mastermind 37340 points

There are many Linux widget libraries for implementing text overlay; we use one called simplewidget for our demos. The source code is included under the demos folder; however, there are fancier ones out there.

With regards to time stamps, this information is normally carried in the transport stream; our demos normally deal with elementary streams. Therefore, this is something you will need to implement is software.

0 Bernie Thompson TI over 17 years ago in reply to Juan Gonzales

TI__Mastermind 41665 points

Although this is more generic to putting up most anything on the OSD, the application note Juan put together a while back below may be of some help, as it illustrates putting up a simple arbitrary OSD, of course for drawing dynamic text you would want to use the widget libraries mentioned by Juan.

http://focus.ti.com/dsp/docs/dspsupporttechdocsc.tsp?sectionId=3&tabId=409&familyId=1302&abstractName=spraad7

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Text Overlay