On Monday, May 23, 2011 22:17:06 Mauro Carvalho Chehab wrote: > Due to the alsa detection code that I've added at libv4l2util (at v4l2-utils) > during the weekend, I decided to add alsa support also on xawtv3, basically > to provide a real usecase example. Of course, for it to work, it needs the > very latest v4l2-utils version from the git tree. Please, please add at the very least some very big disclaimer in libv4l2util that the API/ABI is likely to change. As mentioned earlier, this library is undocumented, has not gone through any peer-review, and I am very unhappy with it and with the decision (without discussion it seems) to install it. Once you install it on systems it becomes much harder to change. Regards, Hans > I've basically added there the code that Devin wrote for tvtime, with a few > small fixes and with the audio device auto-detection. > > With this patch, xawtv will now get the alsa device associated with a video > device node (if any), and start streaming from it, on a separate thread. > > As the code is the same as the one at tvtime, it should work at the > same devices that are supported there. I tested it only on two em28xx devices: > - HVR-950; > - WinTV USB-2. > > It worked with HVR-950, but it didn't work with WinTV USB-2. It seems that > snd-usb-audio do something different to set the framerate, that the alsa-stream > code doesn't recognize. While I didn't test, I think it probably won't work > with saa7134, as the code seems to hardcode the frame rate to 48 kHz, but > saa7134 supports only 32 kHz. > > It would be good to add an option to disable this behavior and to allow manually > select the alsa out device, so please send us patches ;) > > Anyway, patches fixing it and more tests are welcome. > > The git repositories for xawtv3 and v4l-utils is at: > > http://git.linuxtv.org/xawtv3.git > http://git.linuxtv.org/v4l-utils.git > > Thanks, > Mauro. > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
