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dm365 resize problem when the width is greater than 2176

zhiqiang chen
Prodigy 190 points

Hi,all

I got a problem to resize when the width is greater than 2176.    I download a patch from http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/100/t/7583.aspx 

And also resize image located in SDRAM and put it back to SDRAM with format of YUV420SP.

I do success while width is less than 2176 ,but My YUV data is 2448*2048 ,the width is greater than 2176.

I got some idea from http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/100/t/57760.aspx

  said:

1. The line width limitation on IPIPE module is 2176 pixels per line. As you need 2456 pixels per line for your 5MP resolution, you cannot use IPIPE/RSZ in single pass. You would have to do vertical slicing of the frame and then do the imagepipe/resize operation on each vertical slice.

 

But I don't known how to vertical slicing of the frame .Does  mean if the width is 2456 pixels per line you should separate the width into two part each is 2456/2?do by software? if so,there will cost a lot of time

Could you please give a simple demo or Could you please tell me the main process of "vertical slicing of the frame and then do the imagepipe/resize operation on each vertical slice"

 

Thanks very much