Dump video frames to MMC

Ravikiran HV

Other Parts Discussed in Thread: DM385

Hi All,

S/W: ipnc_rdk_v3.2

H/W: DM385EVM

I am trying to dump the captured video frames to Highspeed SD card. For that, card is connected to DM385 MMC slot, and detected as /dev/mmcblk0p1.

Now to enable some file dump, I mounted this /dev/mmcblkop1 on my FileSystem(/opt/memory_card.) Please note that board is booted using NFS.

My fwrite() is able to write some Video frames to SD card successfully .

But the question is:

Am I doing fwrite() to MMC through NFS? (bcz, /dev/mmcblk0p1 mounted on my FileSystem which is supported by NFS)
If yes, how to change it to direct write to MMC instead of via NFS?
My Video Path is capture--->process(In M3)-->A8(dump here). Is there any way, such that I dump the data to SD card from M3 directly, instead of sending to A8 and dump from A8.

Thanks in advance

over 12 years ago

0 Badri Narayanan over 12 years ago

TI__Guru 59700 points

If you mount and write it will get written directly to the device.

Is there any way, such that I dump the data to SD card from M3 directly, instead of sending to A8 and dump from A8.

-- No SD card drivers are not available on M3

0 Ravikiran HV over 12 years ago in reply to Badri Narayanan

Mastermind 8715 points

Hi Badri Narayanan,

Thank you for the precious reply.

"If you mount and write it will get written directly to the device."

From your above reply I understand that, my NFS speed will not come into the picture when I mount and write on SD card. So only Speed of SD card matters.
Please correct me if I am wrong.

Your help is appreciated.

0 Badri Narayanan over 12 years ago in reply to Ravikiran HV

TI__Guru 59700 points

Yes you are correct. NFS speed will not come into the picture

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Dump video frames to MMC