On this fine Independence Day, the PCTV 80e declares independence from the tyranny of Windows. Ok, apologies to anyone from the U.K. for my quirky American sense of humor. Seriously though, Trident Microsystems finally agreed to allow the DRX-J code to be released under a BSD license. This means that we can finally release a… Read More
em28xx
HVR-1800 and other stuff going on…
Been a few days since I’ve posted an update. Here’s a brief summary of things that have been going on in the last week: Progress continued on improving em28xx analog quality. I isolated a problem with chroma AGC in the saa7115, and am working on a fix now. I nailed down most of the analog… Read More
PCTV 74e and More Em28xx Quality Work
I spent the last few days working on some basic quality problems with the KWorld 2800d (an em2860/saa7113 design). It would seem that I uncovered a bug that was introduced almost four years ago which would have resulted in reduced quality for all saa7113 based products. I’m also working on a couple of formatting bugs… Read More
Em28xx video quality
I’m sure you have all seen the following on a channel in the middle of the night. It’s a set of colorbars. [lightbox title=”Em28xx video quality” href=”../../blog/wp-content/uploads/2010/01/tvtime-output-085940-PM-300×200.png”][/lightbox] The above colorbars were taken using KernelLabs’ analog generator, in conjunction with an em28xx based device. I had been bothered about the general picture quality on the em28xx… Read More
Making progress…
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. http://kernellabs.com/hg/~dheitmueller/em28xx-pal-vbi-2/ http://kernellabs.com/hg/~dheitmueller/hvr-1600-alsa-2/ I also checked in the patches I referred to last week when doing cx88 testing with tvtime (testing with a PCTV 800i)…. Read More
Em28xx PAL VBI, cx88 VBI, and tvtime
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… Read More
More tvtime audio work…
I spent the last couple of nights continuing work on tvtime’s audio support. I’m able to playback the audio from the capture device, but I am having problems with underruns. It has actually ended up being a non-trivial exercise delivering audio from a tuner to the sound card with less than 30ms of latency (required… Read More
Em28xx PAL VBI
With the HVR-1600 ALSA stuff completed and being validated, I switched over to wrapping up the outstanding em28xx VBI support for PAL. Since I do not have access to a teletext signal here in the United States, I have taken a two-phase approach to adding the support. Phase 1 involves local validation using a well-defined… Read More
ATI TV Wonder 600 and MythTV
A couple of weeks ago, I mentioned that the ATI TV Wonder 600 was available on woot.com for a very reasonable price. Some people bought the device, and had some questions on making it work with MythTV. Here are a couple of notes that resulted. First off, make sure you install the firmware. Instructions can… Read More
HVR-1600 ALSA audio and Performance Fixes
While Steven continues to churn away on ALSA audio and VBI support for the HVR-1800, I have started working on a project to do ALSA audio for the HVR-1600. So if you have an interest in being able to use the raw analog video capabilities for the 1600, stay tuned! The call for testers for… Read More