swms image quality lost

billy david

Genius 3900 points

hi all,now i do some test with cap ->swms->dis

when i set the swms parameter following :

swmsCreatePrm.outputBufModified = TRUE

the image quality will be a little worse than the cap->dis

so why? and how can i fix it ?

over 11 years ago

0 Badri Narayanan over 11 years ago

TI__Guru 59700 points

SWMS will use EDMA to copy from input to output buffer if input resolution and format matches between input frame and output window.If you set swmsCreatePrm.outputBufModified = TRUE EDMA copy will be disabled and HDVPSS scaling will be used. If you are seeing quality reduction it means doing scaling is reducing quality.

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

Genius 3900 points

because i add the osd link after the swms ,as before you told me ,if i do that ,i should set the

swmsCreatePrm.outputBufModified = TRUE

so how to fix the image quality problem?

badri ,whether you see the following my log.txt.that problem has not fixed

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/323057/1126757.aspx#1126757

0 Sivagamy Govindasamy over 11 years ago in reply to billy david

TI__Expert 6950 points

Refer this post - http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/328614/1149475.aspx#1149475

0 billy david over 11 years ago in reply to Sivagamy Govindasamy

Genius 3900 points

hi Sivagamy ,thanks for your help.i have set the

Set scCfg.enablePeaking = scCfg.enableEdgeDetect = FALSE.

but still i found if i set swmsCreatePrm.outputBufModified = TRUE

the video image will be fuzzy,so how can i do?

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swms image quality lost