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 the ClearQAM fixes has been very successful, and I am happy to report that 100% of the people who have done testing have seen a significant improvement in ClearQAM performance, with none reporting a regression. That said, I will be issuing a PULL request this weekend to get the changes into the mainline v4l-dvb tree.

PAL VBI support is still in progress for the em28xx. A remote environment has been provided where I can do debugging/testing, and if all goes well this should go into the mainline in the next couple of weeks.

2 thoughts on “HVR-1600 ALSA audio and Performance Fixes

  1. Excellent work on the QAM tuning. Thanks!

    Technically one can use raw video right now:

    $ ivtv-tune -c 3
    $ aplay -f dat < /dev/video24 &
    $ mplayer /dev/video32 -demuxer rawvideo -rawvideo w=720:h=480:format=hm12:ntsc

    But that's clunky and inconvenient and no way to enjoy TV. 🙂

    Plus no decent app that I know of uses /dev/video24.for audio and v4l2 user controls for audio control. An ALSA interface will be a welcome addition.

    -Andy

  2. Excellent work on the QAM tuning fixes. Thanks.

    Rudimentary raw video is available

    $ ivtv-tune -c 3
    $ aplay -f dat < /dev/video24 &
    $ mplayer /dev/video32 -demuxer rawvideo -rawvideo w=720:h=480:format=hm12:ntsc

    But that's clunky and inconvenient of course. No way to properly enjoy TV.

    No decent app uses /dev/video24 for audio and v4l2 controls for audio control.
    An ALSA will be a nice addition.

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