Review Request: Phonon KDED module: Improve finding virtual devices from ALSA

[Trever Fischer]

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Screenshot: Capture devices in Phonon config
<http://git.reviewboard.kde.org//r/100700/#scomment1>
    Can I have an english screenshot?

- Trever


On Feb. 21, 2011, 11:23 a.m., Casian Andrei wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/100700/
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> 
> (Updated Feb. 21, 2011, 11:23 a.m.)
> 
> 
> Review request for KDE Runtime, Phonon, Phonon Backends, Harald Sitter, and Trever Fischer.
> 
> 
> Summary
> -------
> 
> Modifications on findVirtualDevices in PhononServer, to make it find usable capture devices for Phonon-VLC, at least. Phonon audio capture works with the provided devices. Also made a couple of mostly irelevant improvements.
> 
> The Phonon KDED module was not providing any usable capture devices. Only some iec958 digital devices showed up, which didn't work at all. VLC needs a default analog ALSA device, like hw:CARD=SB, in my case.
> 
> Solid is not returning any audio devices on my system. I do not know if it works properly on other systems, but I will investigate further.
> 
> This is the commit message:
> 
> Phonon KDED module: Improve finding virtual devices from ALSA
>     
>     PhononServer was not finding any usable capture devices. It
>     was skipping almost all useful devices. Commented out the
>     block for skipping those.
>     
>     Prevent devices with empty names when their description
>     is empty. This should not happen, but it's just in case.
>     
>     Eliminate any front, center, rear, surround virtual devices from
>     capture device candidates.
>     
>     Additionaly, there will be only one device with an unique id, with
>     one or more access descriptors.
>     
>     Replace default: with hw: for capture devices, to enable capture
>     working with Phonon-VLC.
> 
> Because Solid doesn't give me any audio devices, I cannot test for the cases when it actually works. However, I believe that it doesn't work on most systems.
> 
> The other iec958 digital stuff devices show up as advanced.
> 
> 
> Diffs
> -----
> 
>   phonon/kded-module/phononserver.cpp 44f857e 
> 
> Diff: http://git.reviewboard.kde.org/r/100700/diff
> 
> 
> Testing
> -------
> 
> Restarted KDED and ran kcmshell4 phonon, viewed the audio devices. All looks ok. No bogus devices.
> 
> Tested the capture demos from Phonon (currently they have a buggy interface, will be fixed), and they worked fine. Audio capture works ok with the Phonon-VLC backend. Audio-video capture also works if you get around the demo's interface bugs. 
> 
> Don't know what happens when Solid actually works for audio devices, if these changes interfere with Phonon's functionality in that case.
> Not tested on other systems to see if any bogus devices appear out of nowhere.
> 
> Amarok still works :P
> 
> 
> Screenshots
> -----------
> 
> Capture devices in Phonon config
>   http://git.reviewboard.kde.org/r/100700/s/79/
> 
> 
> Thanks,
> 
> Casian
> 
>

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