Multiple streams to access and record for analogue camera Adapter v2.0A in linux

Technical Support
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1

hi,
sir i am trying to access multiple stream from the analogue camera adapter. how can i record and view the live stream of 4 inputs.
And how can we select the particular 2nd channel or 4th channel to get a live stream.
now i am using this code to view the live stream may be ch1.
gst-launch-1.0 imxv4l2src ! autovideosink.
please help.

2

As indicated in the following article channels selection is currently fixed to channel 0 for Apalis iMX6. That said one can anyway not stream multiple inputs as the ADV7280 is a single instance VADC device really.

3

ok sir.
then remaining channels in what condition i can use that. sir,as u said "only channel 0 for apalis imx6 "

4

You may implement channel switching but anyway only ever can capture one single channel at a time.

5

ok sir,
how channel switching done

6

hi
i am trying to switch the channel but it showing like this
alt text

what i have to do from this

7

I assume the data sheet of the ADV7280 indicates how that could be done. As mentioned before our current driver does not implement any such.

8

The channel switching can be done by using i2cset command by directly writing to ADV7280 channel select register.

e.g.:

i2cset -f -y 3 0x21 0x00 <cam_channel_instance>

May be this test script can help.

9

sir,
if i write this command
i2cset -f -y 3 0x21 0x00 which channel it will shift sir.
and how can i back to my old channel… thanks for support sir…please help.
and one more 0x21 and 0x00 what it indicates…

10

Read the manual pages please. Refer i2cset man page.