Date: Thu, 20 Dec 2007 18:36:34 -0500 From: User Mat <mathew.kanner@gmail.com> To: usleepless@gmail.com Cc: freebsd-multimedia@freebsd.org Subject: Re: PVR-150 on 6-STABLE: success and mini HOWTO Message-ID: <20071220233634.GE52400@tube5.mine.nu> In-Reply-To: <c39ec84c0712201415w5a8dcf35h508dfb32692e1ca6@mail.gmail.com> References: <200712191659.28032.danny@ricin.com> <200712200324.13345.danny@ricin.com> <20071220164047.GD52400@tube5.mine.nu> <200712202244.12942.danny@ricin.com> <c39ec84c0712201415w5a8dcf35h508dfb32692e1ca6@mail.gmail.com>
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On Dec 20, usleepless@gmail.com wrote:
> Hi Danny, Mat,
>
> ...
>
> as the author of the pvrxxx version of the pvr250 driver, i have been
> reading along.
Did you see the my patch in the previous message to get pvrxxx to
compile on -current?
>
> Danny, thanks for your mini howto, and it is nice to read it was
> pretty straightforward for you.
>
> i noticed a couple of things:
>
> 1. some version of mythtv fails to probe the inputs. this needs to be
> investigated: there is a problem with the v4l(2)-header-files, or the
> v4l(2) api actually changed ( i seem to recall something about his ).
> i would like to know the exact version of mythtv which fails to probe
> the inputs.
mythtv-0.20.2.tar.bz2 built outside of the ports tree with a few
patches from the port and one or two local hacks.
It's the probing and setting of inputs that failing. The
following log snippets are from mythtv after I faked out some
routine that matches probed inputs to the values in database --
before the hack, it could read the names so it returned 0 avail
inputs thus not capture.
from mythbackend
2007-12-20 17:55:54.189 Connected to database 'mythconverg' at host: localhost
2007-12-20 17:55:54.210 Could not query inputs.
eno: Inappropriate ioctl for device (25)
2007-12-20 17:55:54.211 Channel(/dev/cxm0): SetInputAndFormat() failed
2007-12-20 17:55:54.212 Channel(/dev/cxm0): SetInputAndFormat() failed
2007-12-20 17:55:54.212 TVRec(1) Error: Setting start channel '66' failed,
and backup '1' failed as well.
2007-12-20 17:55:54.218 New DB scheduler connection
from ktrace -di mythbackend
28476 initial thread CALL open(0x2afb0b60,O_RDWR,<unused>0)
28476 initial thread NAMI "/dev/cxm0"
28476 initial thread RET open 4
28476 initial thread CALL ioctl(0x4,0x40685600 ,0xbfbfdefc)
28476 initial thread RET ioctl 0
28476 initial thread CALL ioctl(0x4,0x40685600 ,0xbfbfdeb8)
28476 initial thread RET ioctl 0
28476 initial thread CALL gettimeofday(0xbfbfd8e8,0)
28476 initial thread RET gettimeofday 0
...
28476 initial thread CALL ioctl(0x4,0x40685600 ,0xbfbfdb1c)
28476 initial thread RET ioctl 0
28476 initial thread CALL ioctl(0x4,0xc04c561a ,0xbfbfdc98)
28476 initial thread RET ioctl -1 errno 25 Inappropriate ioctl for device
28476 initial thread CALL ioctl(0x4,0x403c7601 ,0xbfbfdce4)
28476 initial thread RET ioctl -1 errno 25 Inappropriate ioctl for device
>
> 2. the driver is not designed for multiple reading. however, it must
> be able to be opened more than once because the tuner is not a
> separate device. this makes tuning while watching possible.
I wonder if one can open a device for neither reading or writing,
only IOCTLs? Anyway, I've panic'ed my machine several times
because of this.
>
> 3. switching back from svhs is not possible?
I not clear on the question. Switching to the tuner after
switching to svideo/composite does not work.
'pvr250-setchannel -m 1' will also panic my machine.
>
> 4. supporting tvtime and other linux tv-viewers is on my wishlist too:
> a v4l(2) compatible reading api needs to be implemented.
>
> 5. i experimented with the "3:2 pulldown" flag of the encoder. i think
> the current driver mistakenly enables 3:2 pulldown. fixing this will
> improve fast moving scenes ( sports ) and sliding texts.
A question to all: Given an infinite amount of CPU what is the
best possible deinterlacing strategy/filter for mplayer?
--Mat
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