How to scalar yuv420 image to yuv420 image?

Hi Tory,

What framework you are using? gstreamer or your own iLclient?

DEI can do 420SP to 420SP scaling.

Please refer OpenMax_UserGuide.pdf

Ram

Hi Ram,

  Thank you for your reply.

  Yes ,i use IL client.Now I use DEI to scale 420sp. DEI can be created instance to scale 420sp.But the max instancesis 8.I need to get more instances.And when i create more tow instance to scale 420sp,one instance is ok,the other instance cannot to scale  420sp.Thank you.

tory

Hi Tory,

What is the issue you are seeing? You can have a look at decode_mosaicdisplay demo which implements multi instance for scaler.

Ram 

Hi Ram,

  Thank you for your reply.

  I had look at the decode_mosaicdisplay demo.This Demo use the scalar componet which is used to scale yuv420sp frame to yuv422i.But i want to scale yuv420sp frame to yuv420sp.So Do you have other advice?Thank you very much.

Hi Ram,

  I know DEI componet can scale yuv420sp to yuv420sp.But i recreate multiple DEI instances,they can not scale yuv420sp.

up

Hi Ram,

  I have tow questions.

 1. is the max instance of DEI componet 8?I only create 8 DEI instaces.

 2 .when i recreate DEI instance much times ,it will scalae fail.why?

tory

Hi Tory,

yes maximum 8 instances you can create for any m2m driver. and Each handle can have 8 channels maximum. You can try this option to scale.

Ram

Hi Ram,

  Thank you for your reply.

  Can you tell me how to use 8 channel?The resized type of per channel is different.Is it ok?

Hi Tory,

Please refer IL_ClientSetDeiParams function in ilClient_utils.c of capture_encode demo.

Here OMX_TI_IndexParamVFPCNumChPerHandle index is used to set the number of channels and 

for each channel you can specify resolution using OMX_TI_IndexConfigVidChResolution index and setting chResolution.nChId = channel number.

Ram

Hi Ram,

  Thank you for your reply.

   How to allocate buffer for every channel?And how to check returning buffer channel id?Thanks.

Tory