is possible to output hdmi and composite simultaneously?

Hi Hokyun,

I have never tested this use-case, but I think this should be possible. See the HDVPSS driver user guide:

http://processors.wiki.ti.com/index.php/TI81XX_VPSS_Video_Driver_User_Guide

We have separate pipelines for HDMI and SD (composite), which can be separately enabled/disabled/configured.

/sys/devices/platform/vpss/display0 | graphics0 | video0 is for the HDMI

/sys/devices/platform/vpss/display2 | graphics2 | video2 is for the SD (composite)
 

Regards,
Pavel

Hello,

You could check here :

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/125802.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/136448.aspx

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/121270.aspx?pi239031349=1

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/153190.aspx

Hope this helps.

Best Regards,

Margarita

Please note that you cannot connect single pipeline to both of these VENCs.

Rgds,

Brijesh

Thanks,

I tried creating a  separate pAppData instance for each decode channel.

It's done.

But what I want is another way.

$> ./decode_display_a8host_debug.xv5T -i dm816x_1080p_demo.264 -w 1920 -h 1080 -f 60 -g 0 -d 0 -c h264    ---> hdmi output

$> ./decode_display_a8host_debug.xv5T -i dm816x_1080p_demo.264 -w 1920 -h 1080 -f 60 -g 0 -d 2 -c h264    ---> composite output

$> ./decode_display_a8host_debug.xv5T -i dm816x_1080p_demo.264 -w 1920 -h 1080 -f 60 -g 0 -d 3 -c h264    ---> hdmi & composite output simultaneously

please help.

HI?

Hi Yu,

I am not sure how you can do in decode display demo, but from the display point of view, it is possible to have independent display simultaneously on composite and hdmi output.

Regards,

Brijesh

Hi,

In my opinion, the above methods is :

used two pAppData

but I want to use scalar just like dei.

just use one instance(pAppData).

Decode - Display data flow is below :

And Capture - Encode Data flow :

Set two output ports on scalar,
first output port is connect to 'display 1',
second output port is connect to noise filter.

just like below :

It is right?

allocate buffer, set port index, etc...

 Do you understand?

Please answer.

HELP~