GAPK I/O is currently generating too many UL voice frames, causing
Tx queue overflow in the L1 PHY. Change the logic to make DL voice
frames drive the Uplink processing chain, like we do for CSD.
Change-Id: I3a7fa223cb592acd5b850819e0682c9c8f81e9d1
The L1 PHY may emit empty TRAFFIC.ind in case of decoding errors.
Abort execution of pq_audio_sink early, otherwise we hit an assert.
Change-Id: Ice11b72ddfd51fbfb17a4c609c664b86a8f69591
Before we add handling of TCH I/O for data calls, let's rename the
existing voice related symbols and struct fields to have 'voice'
in their names.
Change-Id: If6c799d11e225ad00ca5da5ae63dca20568a0ce0
Related: OS#4396
This way we can extend its API and contents more easily,
and keep most of it together in one place.
Change-Id: Icb4891cc1e4a0ecb5f09cb8a84b0ebe1b91a46b8
This change introduces a new feature to the mobile application -
audio I/O support, which allows the user to speak right from the
host side running mobile through its ordinary mic and speakers.
The audio I/O is based on libosmogapk [1][2], which in its turn
uses the ALSA sound system for the playback and capture. This
is a new optional dependency of mobile, which is automatically
picked up if available during the build configuration. Whether
to depend on it or not can be controlled using '--with-gapk-io'.
The API offered by libosmogapk implies to use the processing chains,
which generally consist of a source block, several processing blocks,
and a sink block. The mobile app implements the following chains:
- 'pq_audio_source' (voice capture -> frame encoding),
- 'pq_audio_sink' (frame decoding -> voice playback).
both taking/storing TCH frames from/to the following two buffers:
- 'tch_fb_ul' - a buffer for to be played DL TCH frames,
- 'tch_fb_dl' - a buffer for encoded UL TCH frames.
The buffers are served by a new function gapk_io_dequeue().
[1] https://gitea.osmocom.org/osmocom/gapk/
[1] https://osmocom.org/projects/gapk
Change-Id: Ib86b0746606c191573cc773f01172afbb52f33a9
Related: OS#5599
Vadim Yanitskiy
Pau Espin
Vadim Yanitskiy