A couple of days ago I submitted a patch for the HVR-1300 to fix a problem where the s-video would have the comb filter enabled even when capturing on s-video. This caused distortion of the video, as Florent Audebert pointed out on the linux-media mailing list. The weird thing is that it only happened when capturing on MPEG, which ultimately was a bug where the input was getting switched whenever the cx88 driver started up the MPEG encoder.
The patch can be found here:
Thanks to Anevia S.A. for sponsoring the fix to this...
12 May 2011 |
Posted by Devin Heitmueller | 6 Comments.
Things continue to be busy here at KernelLabs. This week submitted a patch upstream which results in the IR receiver support starting to work on the HVR-1150 and HVR-1120 boards. This was something that several people had been mentioning to me as an issue over the last nine months.
Thanks go out to Fernando Laudares Camargos for sponsoring the work that finally got this stuff fixed.
Last week we also loaned out a couple of boards to Jarod Wilson to help him do some debugging on the IR support for the cx88 and saa7134 based products. For those of you who don't know Jarod (http://wilsonet.com/),...
11 Jan 2010 |
Posted by Devin Heitmueller | 8 Comments.
I want to share an experience with you all, since everybody loves to watch a train wreck. As developers, we like to think that the state of the LinuxTV project is continuously improving. Then I have days like yesterday....
I wanted to build myself a MythTV box for personal use. Since my goal is to use this "in production", I figured I would pick a PCI based tuner that had mature driver support. I also assumed that this would minimize the likelihood of me running into trouble. I ended up choosing the PCTV 800i, which is a cx88 card that uses the xc5000 tuner and s5h1409 demodulator. It also...
21 Dec 2009 |
Posted by Devin Heitmueller | 3 Comments.
Things are moving along - last night I issued PULL requests for the em28xx PAL VBI support, as well as some cleanups for the HVR-1600 ALSA support that Mauro asked for.
I also checked in the patches I referred to last week when doing cx88 testing with tvtime (testing with a PCTV 800i). There is still definitely a problem there with the cx88 VBI implementation that needs to be dug into, but I haven't had time to do it yet.
16 Dec 2009 |
Posted by Devin Heitmueller | 0 Comment.
I have pretty much wrapped up the VBI support under PAL for the em28xx chip. Tested it with a Teletext source in New Zealand last night. It turns up the WSS reference captures I had were malformed, which sent me off on quite a wild goosechase thinking I was improperly interpreting the data stream. Such is life.
During my em28xx testing, I setup a box with a cx88 board (a PCTV 800i) so I could compare the VBI waveforms. This prompted me to also try out tvtime with the cx88 while I was at it. It basically works, although the VBI handling is pretty broken. The size of the VBI region provided...
Sohail Syyed wrote to us and said he's been having issues using the HVR-1300 when he switches from Analog Encoder mode back to DVB-T. He suggested a three line change. We've worked that into a patch and this appears to have fixed the issue, a working tree is here.
We'll be requesting this is merged later today.Edit: This has been submitted for merge.
Thank you Sohail.