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The branch, fixeria/audio has been created
at 0ed60f68b86b47417e2ec587320e27c84737695b (commit)
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http://cgit.osmocom.org/osmocom-bb/commit/?id=0ed60f68b86b47417e2ec587320e27c84737695b
commit 0ed60f68b86b47417e2ec587320e27c84737695b
Author: Vadim Yanitskiy <axilirator at gmail.com>
Date: Tue Dec 12 19:14:13 2017 +0700
mobile: integrate GAPK based audio I/O back-end
This change introduces a new feature of mobile application - audio
I/O support, which allows to speak right from PC running mobile
through its ordinary mic and speakers.
The audio I/O is based on GAPK library, which relays on ALSA sound
framework. The API of GAPK implies to use the processing queues
(chains), which basically consist of a source block, several
processing blocks, and a sink block. So, there are two voice
processing chains:
- 'pq_audio_source' (voice capture -> frame encoding),
- 'pq_audio_sink' (frame decoding -> voice playback).
Both of them exchange frames from two dedicated buffers:
- 'tch_fb_ul' - a buffer for to be played DL TCH frames,
- 'tch_fb_dl' - a buffer for encoded UL TCH frames.
In its turn, both buffers are served by a new gapk_io_dequeue()
function, which is being called within the mobile_work() loop.
Current limitations:
- Both processing chains are being initialized on MS init
mobile_init() and being destroyed on mobile_exit(). Thus,
some part of memory is occupied during all MS work cycle,
even when there is no an active call. Would be better to
keep both chains in memory during a voice call only.
- TCF/FR codec support only. Despite the both chains are
codec independent, they are being initialized with FR.
Should be resolved together with the first issue.
- Missing ECU (Error Concealment Unit). If the BTS signal is
weak and some TCH frames were lost, the voice playback may
contain some unpleasant audio drops. This will be resolved
as soon as ECU is implemented as a part of libosmocodec.
Change-Id: Ib86b0746606c191573cc773f01172afbb52f33a9
http://cgit.osmocom.org/osmocom-bb/commit/?id=be594d8afbf031ff03b73bee07d61ce1b5cc9bb8
commit be594d8afbf031ff03b73bee07d61ce1b5cc9bb8
Author: Vadim Yanitskiy <axilirator at gmail.com>
Date: Tue Dec 12 19:08:17 2017 +0700
mobile/gsm48_rr.c: set audio mode according to configuration
In the prevoius change a new configuration option was introduced
as a part of new 'audio' node - 'io-target'. This change makes it
to take an effect, instructing the L1 to use one of the following
possible TCH frame I/O targets:
- gapk - build-in (WIP) GAPK-based audio back-end (default);
- hardware - L1 hardware (e.g. Calypso DSP);
- socket - External MNCC application (e.g. LCR).
Change-Id: I2a36d9c30da6746995dcea3a33cb13e0d2f6549a
http://cgit.osmocom.org/osmocom-bb/commit/?id=b929c39eea0aba5e223deb1260d32c1b6df59ecc
commit b929c39eea0aba5e223deb1260d32c1b6df59ecc
Author: Vadim Yanitskiy <axilirator at gmail.com>
Date: Tue Dec 12 03:49:43 2017 +0700
mobile/vty_interface.c: add new 'audio' section
This change introduces a new node named 'AUDIO', which is intended
to organize some audio related settings, such as:
- io-target - TCH frame I/O back-end (e.g. gapk, hardware);
- alsa-output-dev - ALSA playback (i.e. speakers) device name;
- alsa-input-dev - ALSA recording (i.e. mic) device name.
The last two are actual when 'io-target' is set to 'gapk'.
For now, all introduced parameters don't affect anything.
Change-Id: I62cd5ef22ca2290fcafe65c78537ddbcb39fb8c6
http://cgit.osmocom.org/osmocom-bb/commit/?id=ef167cdb6368bb721aacc4af1b9c7081678a6702
commit ef167cdb6368bb721aacc4af1b9c7081678a6702
Author: Vadim Yanitskiy <axilirator at gmail.com>
Date: Fri Sep 8 15:54:39 2017 +0300
host/layer23: add a new logging category for GAPK
Change-Id: I5c3e8553f9bca2ca2e1bf17ee5934e04bd12f605
http://cgit.osmocom.org/osmocom-bb/commit/?id=ab6eebadccb6400c30e4a10efb37aeca7d8436f9
commit ab6eebadccb6400c30e4a10efb37aeca7d8436f9
Author: Vadim Yanitskiy <axilirator at gmail.com>
Date: Fri Sep 8 00:45:29 2017 +0300
mobile: link the binary against libosmogapk
Since GAPK became a library - libosmogapk, one could be used for
the audio capture / playback directly on the host side. This
change adds the library as a dependency, and links the mobile
against it.
Change-Id: I47054f32fec6780bdbe6f73b82aa446c4c7c1df4
http://cgit.osmocom.org/osmocom-bb/commit/?id=6a3321363296d4671c8053668966c4ffa46bd608
commit 6a3321363296d4671c8053668966c4ffa46bd608
Author: Vadim Yanitskiy <axilirator at gmail.com>
Date: Fri Sep 8 00:40:27 2017 +0300
mobile/Makefile.am: consistently format variables
Change-Id: I309d94c4a381c21486e5b424c9504ea6d272af05
http://cgit.osmocom.org/osmocom-bb/commit/?id=bed3ac314145d4685fa1cc508121db05e350e731
commit bed3ac314145d4685fa1cc508121db05e350e731
Author: Vadim Yanitskiy <axilirator at gmail.com>
Date: Mon Dec 11 04:26:12 2017 +0700
mobile: add MNCC handler selection to settings
Since the mobile application is patentionally able to work with
multiple MS instances, it's better to have a possibility to
choose an MNCC (Call Control) handler per each MS separately.
This change cleans up the code, removing a dedicated command-line
option '-m' intended for enabling extarnal MNCC. Now it's possible
to set an MNCC-handler for each MS via VTY interface and settings.
The following MNCC-handlers are available:
- mobile - build-in MNCC-handler (default);
- socket - external MNCC-handler via UNIX-socket (e.g. LCR);
- dummy - dummy handler without CC support.
Change-Id: I2df91c7a79ba5c39bc6ceae900ef649129dd0346
http://cgit.osmocom.org/osmocom-bb/commit/?id=4f5746ada980e3beb7deaee9d0ae0bbf7db45aa5
commit 4f5746ada980e3beb7deaee9d0ae0bbf7db45aa5
Author: Vadim Yanitskiy <axilirator at gmail.com>
Date: Fri Sep 8 18:51:53 2017 +0300
mobile: add MNCC socket path to settings
Previously the MNCC socket path was generated automatically,
using concatenation of the '/tmp/ms_mncc_' prefix and MS name.
Let's allow user to specify this manually, keeping a similar
generation method for default value.
Change-Id: I643356ac579bc5e765f668265ec803b22a73739c
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