dm8168 audio loop back

Hello,

/etc/init.d/matrix-gui-e stop
/etc/init.d/pvr-init stop

This lines will stop the graphics plane.

./decode_display_a8host_debug.xv5T -i ./sample.h264 -w 1920 -h 1080 -f 60 –d 0 -g 0

This line will run the omx demo in /usr/share/ti/ti-omx folder.
In /usr/share/ti/data/video there is video example.

You could run
./decode_display_a8host_debug.xv5T -i /usr/share/ti/data/videos/dm816x_1080p_demo.264 -w 1920 -h 1080 -f 60 –d 0 -g 0

This demo decode->display video.

You could check the DM816x_EZ_Software_Developers_Guide.pdf.

Regarding 1680p resolution for display component the pixel clock should be < 165MHz.

BR
Margarita

Hello,

Then what about  my 1) and 2) question Regarding audio loop back,you dint answer.

./decode_display_a8host_debug.xv5T -i ./sample.h264 -w 1920 -h 1080 -f 60 –d 0 -g 0

This line will run the omx demo in /usr/share/ti/ti-omx folder.

--->>>will the above line(demo) does video loop back kind of demo.

and ,

if i run few demo examples of sd card,i got "permission denied",why this will comw,how to over come.

thank you.

Hello,

SaLoopBack demo demonstrates simple video loop back from capture to display.
Check this guide:
processors.wiki.ti.com/.../TI81XX_PSP_VIDEO_CAPTURE_Driver_User_Guide

You should rebuild the linux kernel to add v4l2 capture/display driver as it is described in the guide then you could refer to e2e.ti.com/.../525510

Regarding the audio loopback :
There is to examples for capture and playback in example-applications/linux-driver-examples-psp04.04.00.01/audio. This demos use alsa. You could create your application.
processors.wiki.ti.com/.../TI81XX_PSP_AUDIO_Driver_User_Guide
processors.wiki.ti.com/.../TI81XX_PSP_HDMI_Driver_User_Guide


BR
Margarita

Hi Margarita,

I want to do codes what we got in  sd card only which  we got with  kit.Are we having that audio loop back code in that sd card.if so tell the location in the sd card only.

If i do copy from my laptop from the  location "example-applications/linux-driver-examples-psp04.04.00.01/audio",it will give error as the ezsdk in the sd card(old ezsdk) is different and am having recent ezsdk.As i lready informed u in other thread and u told me to install on new sd card and with recent ezsdk.still now am not able to do video loop back.

you also told me "Regarding 1680p resolution for display component the pixel clock should be < 165MHz"how to change it?

thank you

Hello,

MOHAMMAD NASEER M N said:

Are we having that audio loop back code in that sd card.

No.

We have only demos one for capture and one for playback and they are not in sd card, they should be build and cp.

You could create your  audio loopback demo. Check the guides which I posted.

MOHAMMAD NASEER M N said:

As i lready informed u in other thread and u told me to install on new sd card and with recent ezsdk.still now am not able to do video loop back.

On your sd card,could contains an older EZSDK version that is why I recommended you to create a new one. Regarding video saLoopBack demo I posted you a guide which includes how to rebuild the kernel and how to add v4l2 capture display driver if it is not added in the kernel. In the other thread are steps how to run it.

MOHAMMAD NASEER M N said:

3)As we know that the video applicatio given in the sd card,can we get output in hd tv with 1680p configuration (not 1080p)?

you also told me "Regarding 1680p resolution for display component the pixel clock should be < 165MHz"how to change it?

Check the TRM   chapter High-Definition Multimedia Interface (HDMI).

BR
Margarita

Hi Margarita,

when i do

"modprobe cmemk phys_start=0x94000000 phys_end=0x947fffff \

pools=20x4096,10x131072,2x1048576"

I got error like"CMEMK Error: Failed to request_mem_region(0x94000000, 8388608) "

what to do with this...am doing Running the Codec Engine examples.

thank you

Hi Margarita,

when i do

"modprobe cmemk phys_start=0x94000000 phys_end=0x947fffff \

pools=20x4096,10x131072,2x1048576"

I got error like"CMEMK Error: Failed to request_mem_region(0x94000000, 8388608) "

what to do with this...am doing Running the Codec Engine examples.

thank you

Hello,

Have you change in bootargs MEM=169M?

The syslink samples use a different memory map from the default EZSDK installation. When booting, ensure that the linux
bootargs is changed from the default values to MEM=169M.

Please for the new issues/questions open a new topic.


BR
Margarita