TDA4VM: TDA4VM RTOS 0806: DSP alpha blend

dongzhang

Part Number: TDA4VM

Hi，
TDA4VM RTOS 0806
Use the picture type like ARGB,and ALPHA BLEND to another ARGB type pic through DSPC66 processing, is there a Demo? or Some DSP demo modules?

thanks.

over 2 years ago

0 Brijesh Jadav over 2 years ago

TI__Guru**** 485125 points

Hi,

No, there is no DSP kernel to demonstrate this feature. But can you consider using DSS for this feature? DSS can do blending of two frames using two video pipelines and then can send blended output to one of the display interface.

Regards,

Brijesh

0 dongzhang over 2 years ago in reply to Brijesh Jadav

Intellectual 370 points

Thanks,
we are hardware have 4 display, so we need to make the overlay by dsp.
and I found the VXLIB have many funcs, like Channel Combine, is there a Function like alpha blend?

+1 Brijesh Jadav over 2 years ago in reply to dongzhang

TI__Guru**** 485125 points

But are all 4 displays simultaneously active? Because if they are not active at the same time, we can use DSS pipeline for blending operations.

I really doubt there is any existing vxlib kernel available for doing blending. You might have take one of the existing kernel and modify it for blending operation.

Regards,

Brijesh

Processors

Processors forum

TDA4VM: TDA4VM RTOS 0806: DSP alpha blend