[ivtv-users] cx18 analog cable problems

[Andy Walls]

On Sat, 2009-08-29 at 04:12 -0400, SoxSlayer wrote:
> On Mon, 24 Aug 2009 22:20:21 -0400
> Andy Walls <awalls at radix.net> wrote:
> 
> > On Mon, 2009-08-24 at 20:40 -0400, SoxSlayer wrote:
> > > On Mon, 24 Aug 2009 19:04:43 -0400
> > > Andy Walls <awalls at radix.net> wrote:
> > > 
> > > > On Mon, 2009-08-24 at 17:42 -0400, SoxSlayer wrote:
> > > > > I have just gotten my HVR 1600 working, well sortof, and I'm
> > > > > running into some problems.  I have used the latest driver from
> > > > > linuxtv.org. The driver and firmware load just fine and dmesg
> > > > > report nothing which would indicate an error.  When I try and
> > > > > view the tv feed with mplayer tv:// the following is the output:
> > > > > 
> > > > > $ mplayer tv://
> > > > > MPlayer SVN-r29463-4.3.2 (C) 2000-2009 MPlayer Team
> > > > 
> > > > 
> > > > Do this instead:
> > > > 
> > > > $ v4l2-ctl -i 0
> > > > Video input set to 0 (Tuner 1)
> > > > 
> > > > $ ivtv-tune -t us-cable -c 4
> > > > /dev/video0: 67.250 MHz  (Signal Detected)
> > > > 
> > > > $ mplayer /dev/video0 -cache 8192
> > > > MPlayer dev-SVN-r26936-4.3.0 (C) 2000-2008 MPlayer Team
> > > > CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 5200+ (Family: 15,
> > > > Model: 107, Stepping: 2) CPUflags:  MMX: 1 MMX2: 1 3DNow: 1
> > > > 3DNow2: 1 SSE: 1 SSE2: 1 Compiled with runtime CPU detection.
> > > > mplayer: could not connect to socket
> > > > mplayer: No such file or directory
> > > > Failed to open LIRC support. You will not be able to use your
> > > > remote control.
> > > > 
> > > > Playing /dev/video0.
> > > > Cache fill: 18.85% (1581056 bytes)   
> > > > MPEG-PS file format detected.
> > > > VIDEO:  MPEG2  720x480  (aspect 2)  29.970 fps  8000.0 kbps
> > > > (1000.0 kbyte/s) ....
> > > > 
> > > > 
> > > > > When I do cat /dev/video0 > test.mpg then play the file there
> > > > > is no audio and the video is not clear.  I can barely tell what
> > > > > channel it is but it is in black and white and is very badly
> > > > > distorted.
> > > > 
> > > > Hmmm, that should always work.  Perhaps trying to use the tv://
> > > > option to mplayer set the cx18 driver to an unusual state.
> > > > Unload and reload the module just to be sure you're in a known
> > > > good state before running the above test.
> > > > 
> > > > Regards,
> > > > Andy
> > > > 
> > 
> > > 
> > > Thanks a lot it worked.  It's not too crucial but when there is a
> > > lot of motion it seems like every other pixel row is laggin behind
> > > the rest.  It kinda looks like something to do with deinterlacing.
> > > Is there some setting in mplayer that can get rid of this.
> > 
> > I'm not sure about mplayer.  You can try playing around with the MPEG
> > encoding controls in the driver:
> > 
> > $ v4l2-ctl --help
> > $ v4l2-ctl -L
> > 
> > 
> > 
> > > Also, what is the status of the IR remote that is included with the
> > > HVR-1600?  I didn't see too much information while researching the
> > > other topics with the card and linux.
> > 
> > 
> > It should work with the ir-kbd-i2c module in the latest v4l-dvb
> > sources.
> 
> When I try and load ir-kbd-i2c it reports:
> 
> ir-kbd-i2c: ir-kbd-i2c: Unsupported device at address 0x71
> 
> in the output to dmesg.  The command used to load the module was:
> 
> # modprobe ir-kbd-i2c hauppauge=1 debug=1
> 
> If this is a bug where should I file it and what additional information
> would be helpful?

Argh, this bug belong to me.  I either didn't do the changes to
ir-kbd-i2c.c:ir_probe() properly or cx18/cx18-i2c.c:cx18_i2c_new_ir() .

What kernel version are you using?

Are you using the ir-kbd-i2c and cx18 drivers compiled from the latest
v4l-dvb repository?


I never tested these changes as I don't have a 2.6.30 kernel availbe in
my home setup.  I guess I'll need to download one and do some real
testing.

Regards,
Andy

> > 
> > The unfortunate problem is that the latest v4l-dvb branch is broken
> > for LIRC.  I2C subsystem changes in the latest kernels broke the
> > interface LIRC used to hook up to I2C connected IR chips within V4L.
> > I updated the cx18 driver to at least work with ir-kbd-i2c.  LIRC is
> > undergoing updates by Jarred Wilson, so that one day lirc_i2c and
> > lirc_zilog (aka lirc_pvr150) will work again. See discussions within
> > the past year on the linux-media and linux-kernel mailing lists.
> > 
> > I need to do an analogous change for ivtv, but haven't gotten to it
> > yet.
> > 
> > Regards,
> > Andy
> > 
> > 
> > _______________________________________________
> > ivtv-users mailing list
> > ivtv-users at ivtvdriver.org
> > http://ivtvdriver.org/mailman/listinfo/ivtv-users
> 
> -- 
> 
> Dustin Mitchell
> dmmitche at purdue.edu
> 
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