how to set the osd format

billy david

Genius 3900 points

hi all. i see RDK demo that the osd format has three format:

SYSTEM_DF_YUV422I_YUYV

SYSTEM_DF_YUV420SP_UV

SYSTEM_DF_RGB24_888

so how should i set the osd format?

i see the osd note ,it seems like that the osd format depends the input video frame

If input video frame is in YUV422 interleaved format, then set the OSD window format as
SYSTEM_DF_YUV422I_YUYV, ex- captured frame buffer. If input video frame is in YUV42o
semi-planar format, then set the OSD window format as SYSTEM_DF_YUV420SP_UV, ex- encoder
video buffer.

so if i link the osd link after swms link ,what format should i set the format?

over 11 years ago

0 Badri Narayanan over 11 years ago

TI__Guru 59700 points

The output of SwMs depends on the SwMsPrm outFormat which can be 422I or 420SP. By default it is 422I.

If your OSD format is SYSTEM_DF_RGB24_888 it wil be converted to required YUV format by OSD module internally but it will waste CPU cycles and it is recommended the application create OSD of correct YUV format.

0 billy david over 11 years ago in reply to Badri Narayanan

Genius 3900 points

thanks for your answer,Badri.

but whatever i set the format with SYSTEM_DF_YUV422I_YUYV or SYSTEM_DF_RGB24_888

it alse has the shadow flash across .that is why?

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/305910/1065901.aspx#1065901

i do some other test ,and found that if i linked the osd link after the swms ,when i change the osd window startX for rolling(+2),before the osd window would have a shadow flash once for change .but if the OSD link is before the swms link ,it will not have the shadow flash.

so whether is there a way to fix the problem？

tks

Processors

Processors forum

how to set the osd format