Gotcha. So it is working exactly as designed. I'll play around with it
a bit more and find a place for this code. Thanks for explaining it to me!
Bry
Chris Kennedy wrote:
It's meant to turn it off, then run the input init api, and then turn
the digitizer back on, this is the way the encoder is recommended to be
setup before a capture. So anything else there, power down, probably
doesn't belong because that function is really specific to just the
disable of the digitizer (to keep it from having any video output) during
that input init API call. I'd make a new ioctl call possibly for that
I guess, don't think it'd be good to do anything else during that process
since it's in the middle of capture setup and possibly should be an ioctl
to use by applications to shut it down (since probably would add to delay
of starting a capture).
Thanks,
Chris
On Thu, Jun 02, 2005 at 05:31:50PM -0400, Bryan Mayland wrote:
I went in this afternoon and added code to power down unused AFE
channels (by input), and power down everything when not encoding. I was
curious if this was safely doable, because logically it should be (why
run the ADCs if we're not capturing? etc)
I came across something else though and I was wondering if it was
supposed to be that way. I added my code to the DECODER_ENABLE_OUTPUT
ioctl, but it wasn't getting called when I thought it would be (as
indicated by cx25840: decoder disable/enable output log messages).
Module load: Decoder disabled then enabled
Capture: I believe in the VBI DMA init, decoder disabled then enabled.
I was thinking that cx25840's DECODER_ENABLE_OUTPUT was supposed to be
turning on and off the digitizer when needed for capture. Is this not
the case?
PS - I hacked in setting DECODER_ENABLE_OUTPUT as needed in
ivtv-fileops.c and it looks like we can power down all 3 AFE channels,
both ADCs and their DLLs, as well as the "filter tuning" circuitry while
not doing a capture with no adverse affects! I'd love to get this in
once I resolve where is should be.
-------------------------------------------------------
This SF.Net email is sponsored by Yahoo.
Introducing Yahoo! Search Developer Network - Create apps using Yahoo!
Search APIs Find out how you can build Yahoo! directly into your own
Applications - visit http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005
_______________________________________________
ivtv-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ivtv-devel
-------------------------------------------------------
This SF.Net email is sponsored by Yahoo.
Introducing Yahoo! Search Developer Network - Create apps using Yahoo!
Search APIs Find out how you can build Yahoo! directly into your own
Applications - visit http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005
_______________________________________________
ivtv-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ivtv-devel
