2022-05-26 10:59:29 -07:00
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Forked from https://gitlab.com/postmarketOS/q6voiced
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2022-05-26 10:56:38 -07:00
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# Instalation
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```
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2022-05-26 10:56:38 -07:00
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make
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make install
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2022-05-26 10:59:29 -07:00
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```
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2022-05-26 10:56:38 -07:00
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# Dependency
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tinyalsa
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# Instalation on Mobian guide
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```
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2022-05-26 10:56:38 -07:00
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apt install libdbus-1-dev
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git clone https://github.com/tinyalsa/tinyalsa.git
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cd tinyalsa
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make
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sudo make install
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sudo ldconfig
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2022-05-26 11:02:11 -07:00
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git clone https://github.com/alexander-pav/q6voiced.git
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2022-05-26 10:56:38 -07:00
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cd q6voiced
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make
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sudo make install
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2022-05-26 10:59:29 -07:00
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```
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2022-05-26 10:56:38 -07:00
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# q6voiced
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q6voiced is a userspace daemon for the QDSP6 voice call audio driver.
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Voice call audio is directly routed from the modem to the input/output audio
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devices, but something needs to start the audio streams for that to happen.
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q6voiced listens on dbus for signals from oFono, and opens/closes the
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PCM device when a call is initiated/ended in oFono. This essentially
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makes voice call audio work out of the box (provided that the audio
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routing, e.g. Earpiece and a microphone is set up appropriately).
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The q6voiced patches can be currently found in the [msm8916-mainline/linux]
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repository (look for `ASoC: qdsp6:`) commits). It may also work for downstream
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since the currently implemented approach is very similar.
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## Note
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It is expected that this daemon will be obsolete eventually.
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Different approaches exists for activating such audio streams that are not
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processed directly by Linux. (See [Hostless PCM streams]) At the moment the
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kernel driver implements the "Hostless FE" approach (as on downstream), but
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eventually this should be replaced by a Codec <-> Codec link.
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In that case the audio streams would be activated by setting some ALSA mixers
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(e.g. through ALSA UCM) and this daemon could be removed. However, there is
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quite some work involved to make that work properly. Until then, this daemon
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allows voice call audio to work without activating audio manually.
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[msm8916-mainline/linux]: https://github.com/msm8916-mainline/linux
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[Hostless PCM streams]: https://www.kernel.org/doc/html/latest/sound/soc/dpcm.html#hostless-pcm-streams
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