How to get the dma fd of vx_image which create by vxCreateImage

Sam Dong

Other Parts Discussed in Thread: TDA4VM

hello,

I create a vx_image by the follow code:

"vx_image output = vxCreateImage(context, DISPLAY_WIDTH, DISPLAY_HEIGHT, VX_DF_IMAGE_RGBX);"

and I want to use this vx_image to generate a fbo, then my opengles app can render something to the fbo,

at first, I have to get the dma fb of the vx_image, but I haven't find the method how to get the dma fb of the vx_image,

waitting your help.

over 4 years ago

0 LeonardEllis over 4 years ago

TI__Guru 71526 points

Hello Sam,

What processor are you using?

Thank you,

~Leonard

0 Sam Dong over 4 years ago in reply to LeonardEllis

Prodigy 38 points

Hello LeonardEllis:

TDA4VM,Linux+RTOS,

My app run on A72,

Sam

+1 Lucas Weaver over 4 years ago in reply to Sam Dong

TI__Genius 13845 points

Hello Sam,

The virtual address can first be obtained by using the API tivxReferenceExportHandle then the DMA Buf FD can be obtained by passing the virtual address to tivxMemTranslateVirtAddr.

Regards,

Lucas

0 Sam Dong over 4 years ago in reply to Lucas Weaver

Prodigy 38 points

Hello Lucas:

I have get the DMA Buf FD by the API,

Thank you very mach.

Regards,

Sam

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How to get the dma fd of vx_image which create by vxCreateImage