Text Overlay

Bala3458

Intellectual 340 points

Hello,

I want to add text on my OSD1 (/dev/fb/2) screen. In OSD0 screen I added JPEG image. My OSD1 window is set like this,

mode "720x576-50"

# D: 12.658 MHz, H: 14.962 kHz, V: 50.042 Hz

geometry 720 576 720 576 4

timings 79000 126 0 22 0 0 0

bcast true

laced true

nonstd 1

rgba 0/0,0/0,0/0,0/0

endmode

I had seen some example in dvsdk/demo folder with simplewidget. How I can use it in my application program. Can anybody explain me or send some simple example to add text on OSD screen.

Regards

Bala...

over 16 years ago

Bernie Thompson TI over 16 years ago

TI__Mastermind 41665 points

The demo does use simplewidget, since the source is all there that is probably the simplest implementation of OSD text we have.

For a more general example of using the OSD there is an application note here, though this was written for DM6446 the same concept should apply to DM355. Of course this only deals with drawing something on the screen, getting automatically generated text will require the use of other software such as simplewidget.