6e2fd793ac
Increase compiler warnings and fix them
2024-04-05 21:51:41 +02:00
a20637825a
Audio rework, new jitter buffer
...
Jitter buffer is now based on packets, not on samples. The frames are
dejittered in received form. After reading from jitter buffer, they are
decoded in correct order. If a frame is missing, it is concealed by
repeating audio.
2024-03-30 23:28:05 +01:00
3158c48365
Move from local to external osmo* libraries
...
src/libdebug -> libosmocore
src/libselect -> libosmocore
src/libtimer -> libosmocore
src/libosmocc -> libosmo-cc
src/libg711 -> libosmo-cc
2024-02-18 16:23:29 +01:00
28a297f97d
Generate compador table only once when the application starts
2023-03-18 19:49:56 +01:00
2b7efedc48
Refactoring jitter buffer
...
Features are:
* Packet based buffer
* Random in, first out
* Adaptive delay compensation (voice)
* Fixed delay (data, optionally MODEM/FAX)
* Interpolation of missing frames
* Any sample size
2022-10-23 16:56:27 +02:00
89e3b89758
C-Netz: Improved RX speech quality and decoder debugging
2022-07-23 08:26:53 +02:00
26f4b3f711
C-Netz: Cleanup OgK slot allocation and polarity detection
...
Now you can select between 1 and 8 slots per frame.
2022-06-19 06:51:30 +02:00
4930da8e0c
C-Netz: Add capability of non-standard OgK channel(s)
2022-06-19 06:51:28 +02:00
0ebd53ac69
C-Netz: Minor fixes to pulse shaping code
2021-11-07 20:00:42 +01:00
Martin Hauke
a07764f0d9
Fixed typos in cli output and source code comments
2021-01-03 09:57:03 +01:00
118b0260bc
C-Netz: Fix scheduling of frames when there is nothing to send
2020-12-21 08:38:44 +01:00
ff498d10e1
C-Netz: Added option to define time slots of OgK
2020-10-29 07:36:26 +01:00
f468b2dd9f
C-Netz: Minor fixes
2020-10-29 07:36:14 +01:00
7189984bbb
C-Netz: At correct timeslot switch channel mode
...
Without this, the first BQ(K) message came to early, so that BSA 51
released when receiving ZFZ(K) one frame too early.
2020-10-29 07:35:50 +01:00
c2f14834e5
Rename dbm0 (level) to speech (level)
...
In mobile communications we use speech level instead of milliwatts.
The deviation (FM) is always based on speech level, not on 1 milliwatt.
2019-12-08 17:24:36 +01:00
360729d270
C-Netz: Added list of base station names and IDs
...
Automatic polarity detection is now done by using the polarity of last
transmitted message. We cannot use two base station IDs anymore, to
detect the polarity. Now we deal only with the defined base station ID.
2019-11-29 15:58:32 +01:00
195f7481d8
C-Netz: Correctly synchronize time stamp of SpK to OgK
...
Even if the SpK is not used (yet), it must count time stamp (bit_time) so that
SpK keeps in sync with the OgK, until frames are received from mobile station.
2019-10-26 16:57:01 +02:00
1321f66456
C-Netz: Add option to control voice deviation
2019-01-02 15:58:34 +01:00
e9a7f610ee
Compandor: Remove unused option for unaffected level
2018-10-14 13:07:25 +02:00
6277753574
Minor debug message corrections
2018-02-15 08:00:18 +01:00
1a341f6b4e
Restructure: Move debug from common code to 'libdebug'
2017-12-03 08:45:58 +01:00
ab59a26a51
Restructure: Move mobile from common code to 'libmobile'
2017-12-03 08:45:54 +01:00
ed31a26eba
Restructure: Move sample from common code to 'libsample'
2017-12-03 08:45:48 +01:00
b605da1aff
Restructure: Move timer from common code to 'libtimer'
2017-11-13 20:00:52 +01:00
ee3fbeb03b
Split call control from built-in call console by using MNCC layer
2017-11-05 16:58:31 +01:00
b32e0ab602
Implementation of RX level squelch (for A-Netz and B-Netz)
...
Use -S <dB> for setting RF level or use -S auto for auto level.
When squelch closes, audio is muted. If squelch is closed for some
seconds (depending on network), call is released. (RF loss condition)
The previous loss detection has been removed
2017-10-22 19:23:08 +02:00
743d147d16
SDR: Turn TX power off if requested by network
...
The power level is ramped smoothly within 1 ms up or down.
R2000, AMPS and C-Netz turn off power when voice channel is not i use.
C-Netz turns off power between OgK timeslots.
2017-09-01 18:42:46 +02:00
76a3484c5c
C-Netz: Make demodulation algorithm (slope or leve) slectable via option
...
By default (auto), the algorithm is selected, depending on sound card
or SDR usage. For testing and debugging purpose, the algorithm can be
forced.
2017-05-19 19:11:59 +02:00
c086e66b7c
minor cleanups
2017-05-17 20:14:37 +02:00
ef7ff26793
C-Netz: SDR now uses zero-crossing to detect level changes.
...
This does not work with analog radio, but with SDR it works.
The quality should be better and the process is faster.
2017-05-17 20:06:46 +02:00
9d87b5bf0f
C-Netz: Improved transmission of speech
...
The speech is now correctly ramped up and down during pause bits.
2017-05-17 20:06:44 +02:00
ca10048e5c
Rename filter -> iir_filter (file name and instance name)
...
This is useful when using fir_filter in the future.
2017-05-15 21:46:32 +02:00
8e0d7d2513
samplerate.c: Allow transcoding to lower sample rate other than 8000 Hz
2017-03-04 16:52:20 +01:00
17b6124122
C-Netz: Remove useless -V option
2017-02-18 21:02:54 +01:00
4de1e0188d
C-Netz: Add low pass filter to eliminate high frequency noise
...
This improves the FSK decoding quite allot, especially with SDR.
2017-02-18 21:02:52 +01:00
5f1d7bc970
C-Netz: Improve clock speed measurements.
...
Sound card's clock measurements only requires a few minutes to get sub-ppm
accuracy results.
2017-02-18 21:02:46 +01:00
faa3dfb7d4
C-Netz: Make average to clock measurements for a quicker result
2017-02-18 21:01:19 +01:00
8cb0187133
C-Netz: Remove the obviously useless noise function for unused timeslots
2017-02-18 21:01:17 +01:00
7e45f556ce
Correcting all levels and move all remaining integer samples to sample_t
...
The leves are based on the standards of each mobile network. They
are adjusted to the specified frequency deviation now.
2017-02-18 21:01:13 +01:00
bd7ccc5fa0
Add global DC-Filter and remove all individual DC-Filters
2017-02-18 21:01:12 +01:00
7ea3bc188d
Move samples of int16_t format to sample_t, that is of type double
...
This prepares the correction of all levels
2017-02-18 21:01:08 +01:00
538a959128
Indexing tables by casting index to unsigned integer only
2017-02-18 21:01:06 +01:00
c5cf88ce57
Prepare for SDR: Add bandwidth and deviation info to sender instance
2017-02-18 21:00:47 +01:00
9ff8c3bb25
Rework on audio interface
...
Sound instance is now called audio instance and uses funcation pointers.
This gives a clean interface to be exchanged with other technologies,
linke SDR.
2017-02-18 21:00:45 +01:00
d54d3ac265
prepare audio handling for multi carrier SDR
2017-01-07 06:28:24 +01:00
2d0bc92cde
C-Netz: Make demodulation buffer size dynamic
2017-01-07 06:26:50 +01:00
a37dfe38ab
C-Netz: Fixed double free bug
2017-01-07 06:26:49 +01:00
7585f9c22d
Add function to change dsp state, more debug with channel info
2016-12-09 16:34:33 +01:00
e34d74aa23
C-Netz: Simplifying TX signal clock sync between two channels
2016-11-30 18:09:38 +01:00
f911717aa4
C-Netz: Minor coding style changes, no changes to process
2016-11-22 19:09:05 +01:00
Andreas Eversberg
Martin Hauke