DM814x Gstreamer capture issue

Don Purvis

Need your help with DM814X EVM and GSreamer receiving video stream from the EVM component input. I'm working with Mistral EVM[Rev-E] with EZSDK [ti-ezsdk_dm814x-evm_5_05_02_00]. I have had success with EVM and GStreamer pipes using videotestsrc and sending video stream to a HDMI monitor. I am using a DVD player set to 720P60 as input. I'm gettting an error "ti81xxvin ti81xxvin: get_user_pages failed" when I run the following GStreamer pipe:

gst-launch -v v4l2src always-copy=false ! 'video/x-raw-yuv,format=(fourcc)NV12, width=1280, height=720, framerate=(fraction)60/1' ! fakesink

I've attached the output log file so you can see the boot process and GStreamer execution. How can I solve this problem? Thank you

5861.DM814x Gstreamer.TXT

over 10 years ago

0 Margarita Gashova over 10 years ago

TI__Guru* 80190 points

Hello,

You check this e2e forum thread:

http://e2e.ti.com/support/embedded/linux/f/354/t/201088.aspx

I hope this help.

Best Regards,

Margarita

0 Don Purvis over 10 years ago in reply to Margarita Gashova

Prodigy 185 points

I read the forum thread you provided but I did not find a solution. Can you help with the "ti81xxvin ti81xxvin: get_user_pages failed" please? Thanks

0 Margarita Gashova over 10 years ago in reply to Don Purvis

TI__Guru* 80190 points

Hello,

Could you verify first is the saLoopBack demo working.

Best Regards,

Margarita

0 Don Purvis over 10 years ago in reply to Margarita Gashova

Prodigy 185 points

I tried your suggestion and saLoopBack demo works successfully. I have attached the saLoopBack log below:

7711.outputSaLoopBack.TXT

However, GStreamer fails with get_user_pages. I have attached the GStreamer log below:

2744.outputGstreamer.TXT

I am using ti-ezsdk-dm814x-evm_5_05_02_00, and psp version is linux-2.6.37-psp04.04.00.01. My BOOTARGS are:

1780.bootArguments.txt

setenv bootargs "console=ttyO0,115200n8 rootwait rw mem=364M@0x80000000 mem=320M@0x9FC00000 vmalloc=500M notifyk.vpssm3_sva=0xBF900000 root=/dev/nfs nfsroot=192.168.1.101:/home/dpurvis/tools/targetfs ip=192.168.1.102::0.0.0.0:255.255.0.0::eth0:off rootdelay=5"

Please help! Thanks!

0 Margarita Gashova over 10 years ago in reply to Don Purvis

TI__Guru* 80190 points

Hello,

Could you try?

gst-launch v4l2src device=/dev/video0 always-copy=false queue-size=8 ! 'video/x-raw-yuv,format=(fourcc)NV12,width=1920,height=1080,framerate=(fraction)60/1' ! omxbufferalloc numBuffers=8 ! gstperf ! omx_scaler ! v4l2sink device=/dev/video1

Let me know.

Best Regards,

Margarita

0 Don Purvis over 10 years ago in reply to Margarita Gashova

Prodigy 185 points

I tried your suggestion. I have attached a log output of the Gstreamer failure.

2112.outputGstreamer720P60.TXT

After Gstreamer failed, I ran saLoopBack successfully so my EVM and video source (720P60) are good. Your help is most appreciated. What other suggestions can I try?

Thank you,

Don

0 Don Purvis over 10 years ago in reply to Don Purvis

Prodigy 185 points

Margarita, I have not heard back in some time. I tried your suggestions and included information in my last post for your review and suggestions. Please help!

Thank you,

Don

0 Margarita Gashova over 10 years ago in reply to Don Purvis

TI__Guru* 80190 points

Hello Don,

Could you tried to add vram=50M to your bootargs?

console=tty00, 115200n8 rootwait rw mem 256M earlyprink notifyk.vpssm3_sva=0xBF900000 vram=50M vmalloc=500M ti814xfb.vram0:16M,2:6M, ubi.mtd=4,2048 root=ubi0:rootfs rw rootfs=ubifs

Have you made some changes in EZSDK?

Is the gst version is gst-openmax_GST_DM81XX_00_07_00_00?

Best Regards,

Margarita

0 Don Purvis over 10 years ago in reply to Margarita Gashova

Prodigy 185 points

Hello Margarita,

Your suggestions are most appreciated.  I still have no solution to my Gstreamer problem.

I have no changes to EZSDK.  I have re-installed ti-ezsdk-dm814x-evm_5_05_02_00 to be sure.

I checked gst version and it is gst-openmax_GST_DM81XX_00_07_00_00. 

My GStreamer Core Library is version 0.10.32

I added  vram=50M to my bootargs.  My new bootargs are:
 
    2677.newBootArguments.txt
    console=ttyO0,115200n8 rootwait rw earlyprink mem=364M@0x80000000 mem=320M@0x9FC00000 notifyk.vpssm3_sva=0xBF900000 vram=50M vmalloc=500M root=/dev/nfs 
nfsroot=192.168.1.101:/home/dpurvis/tools/targetfs ip=192.168.1.102::0.0.0.0:255.255.0.0::eth0:off rootdelay=5


I have attached a verbose output of Gstreamer with debug=3:
7522.outputGstreamer720P60verbose2.TXT

After Gstreamer failed, I ran saLoopBack and it executes successfully with no errors.
What could I try or check next?
Thank you,
Don

0 Margarita Gashova over 10 years ago in reply to Don Purvis

TI__Guru* 80190 points

Hello,

I am not able to verify the pipeline but I am seeing this error in the log file:

ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data flow error.
Additional debug info:
gstbasesrc.c(2574): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
streaming task paused, reason not-negotiated (-4)

Could you add:

--gst-debug=v4l2src:5 and attach the log file.

Best Regards,

Margarita

0 Don Purvis over 10 years ago in reply to Margarita Gashova

Prodigy 185 points

Thank you for your fast response! Here is the log you requested:

2112.outputGstreamer720P60verbose3.TXT

Best Regards,

Don

0 Margarita Gashova over 10 years ago in reply to Don Purvis

TI__Guru* 80190 points

Hello,

If you have not applied this patches please apply it.

2806.v4l2_patches.tar.gz

Please verify it again with saloopback and gstreamer after when you apply them.

Also could you check the caps that you are setting( 'video/x-raw-yuv,format=(fourcc)NV12, width=1280, height=720, framerate=(fraction)60/1' )?

Let me know.

Best Regards,

Margarita

0 rajesh singh over 10 years ago in reply to Margarita Gashova

Intellectual 300 points

Hello

This error is because gstreamer is allocating buffers in linux memory (virtual memory) and driver is accepting contigious memory. Allocate the buffers in vram memory for gstreamer then it will work.

Thanks and regards:

Rajesh Singh

0 Don Purvis over 10 years ago in reply to rajesh singh

Prodigy 185 points

Thank you for your help! I thought allocate buffers in vram memory was done with bootargs. If so I have attached my bootargs for your inspection:

5153.bootArguments.txt

setenv bootargs "console=ttyO0,115200n8 rootwait rw earlyprink mem=364M@0x80000000 mem=320M@0x9FC00000  notifyk.vpssm3_sva=0xBF900000 vram=50M vmalloc=500M ti814xfb.vram=0:16M,1:16M,2:6M root=/dev/nfs 
nfsroot=192.168.1.101:/home/dpurvis/tools/targetfs ip=192.168.1.102::0.0.0.0:255.255.0.0::eth0:off rootdelay=5"

Is there another way to allocate buffers in vram memory?

Thanks and regards,

Don

0 Brijesh Jadav over 10 years ago in reply to Don Purvis

TI__Guru**** 399310 points

The amount of memory specified in the bootargs is used to reserve that much memory in system memory for the vram. Then drivers like video drivers can use vram apis to allocate physically continguous memory from this reserved space.

Rgds,

Brijesh

0 rajesh singh over 10 years ago in reply to Don Purvis

Intellectual 300 points

Hi Don,

in the arg "vram=50M vmalloc=500M ti814xfb.vram=0:16M,1:16M,2:6M" you are reserving 50 MB of memory out of which 16MB for fb0 , 16MB for fb1 and 6MB for fb2. so this memory v4l2src plugin is not using.

If you are aware of v4l2src plugin, at the time v4l2src is calling g_new0 to allocate the buffers. These buffers is used by driver to fill it with data. you may use any of the fb memory which you are not using for display

Thank and Regards:

Rajesh Singh

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DM814x Gstreamer capture issue