RGB Scale Question on DM8148

chrishuang96

I had tested the YUV422 format can be scaled(1920x1080 -> 512x512), but RGB888 get fail.

Then i follow some discussion and find the HDVPSS scalers are 4:2:2, so RGB format can't be scaled?

The question is my algorithm need rgb format and rescale to 512x512, now i use c code to implement, but it is too slow,
Is any solution can get better performance?

over 12 years ago

0 Margarita Gashova over 12 years ago

TI__Guru* 80190 points

Hello,

What is the software release that you are using here?

chrishuang96 said:
Then i follow some discussion and find the HDVPSS scalers are 4:2:2

Correct.

You could check these threads:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/256413.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/150641/742147.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/142234/513486.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/136442.aspx

Hope this help.

Margarita

0 Renjith Thomas over 11 years ago

Guru 31670 points

Hi Chris,

Your understanding is partially. Some of the scalars doesn't support RGB. You can still scale RGB down using the capture path scalars (SC_3).

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RGB Scale Question on DM8148