In gsm_lchant_name(enum gsm_chan_t), use the gsm_chan_t_names value strings
from libosmocore instead of redefining the same strings. The list from
libosmocore is also more complete, including CCCH and PDTCH.
Add a todo comment to move to libosmocore.
In consequence, libosmogsm linkage needs to be added to osmo-bsc_mgcp,
mgcp_test, mgcp_transcoding_test and smpp_mirror, smpp_test.
Change-Id: If65ee7c0619cbc0acb0a15045bd5a969442c93cc
This patch moves the files relevant to transcoding from
src/osmo-bsc_mgcp to src/libmgcp and src/include/openbsc. Makefiles
and include directives are being updated accordingly.
Sponsored-by: On-Waves ehf
This patch implements audio transcoding between the formats GSM,
PCMA, L16, and optionally G.729.
The feature needs to be enabled by using the autoconf option
'--enable-mgcp-transcoding'. In this case mgcp_transcode.c will
be compiled and linked to osmo-bsc_mgcp, and the transcoding
functions provided will be registered as processing callbacks.
If G.729 support is required, libcg729 needs to be installed and
'--with-g729' must be passed to ./configure.
Ticket: OW#1111
Sponsored-by: On-Waves ehf
This patch adds the voice muxer. You can use this to batch RTP
traffic to reduce bandwidth comsuption. Basically, osmux transforms
RTP flows to a compact batch format, that is later on decompacted
to its original form. Port UDP/1984 is used for the muxer traffic
between osmo-bsc_nat and osmo-bsc_mgcp (in the BSC side). This
feature depends on libosmo-netif, which contains the osmux core
support.
Osmux is requested on-demand via the MGCP CRCX/MDCX messages (using
the vendor-specific extension X-Osmux: on) coming from the BSC-NAT,
so you can selectively enable osmux per BSC from one the bsc-nat.cfg
file, so we have a centralized point to enable/disable osmux.
First thing you need to do is to accept requests to use Osmux,
this can be done from VTY interface of osmo-bsc_nat and
osmo-bsc_mgcp by adding the following line:
mgcp
...
osmux on
osmux batch-factor 4
This just initializes the osmux engine. You still have to specify
what BSC uses osmux from osmo-bsc_nat configuration file:
...
bsc 1
osmux on
bsc 2
...
bsc 3
osmux on
In this case, bsc 1 and 3 should use osmux if possible, bsc 2 does
not have osmux enabled.
Thus, you can selectively enable osmux depending on the BSC, and
we have a centralized point for configuration from the bsc-nat to
enable osmux on demand, as suggested by Holger.
At this moment, this patch contains heavy debug logging for each
RTP packet that can be removed later to save cycles.
The RTP ssrc/seqnum/timestamp is randomly allocated for each MDCX that
is received to configure an endpoint.
Use a usec timestamp for the local time. The seconds to usec will
swap over to the lower bits but this appears to be correct. The
CLOCK_MONOTONIC is used to fulfill the RFC 3550 requirement even
if it is a bit slower than the gettimeofday.
Make sure to initialize transit in a way that the first transit
time will be 0. Otherwise the jitter will contain the difference
of the localtime and the remote time.
gsm_data_shared.h includes e1_input.h of libosmo-abis, add the
LIBOSMOABIS_CFLAGS to Makefile.am, remove AM_LDFLAGS at the same
time as we only build .a archives.
Ubuntu 11.10 has changed some linker/compiler flags. Some fixes for this
can be seen here[1]. In general the to be linked libs need to be moved into
the LDADD section of parameters. This is with the old BFD linker (not gold).
This is likely to end in some ping-pong with other versions of the linker.
[1] https://bugs.launchpad.net/ubuntu/+source/nis/+bug/771034
Errors:
/usr/bin/ld.bfd.real: bsc_hack.o: undefined reference to symbol 'osmo_init_ignore_signals'
/usr/bin/ld.bfd.real: note: 'osmo_init_ignore_signals' is defined in DSO /home/ich/install/openbsc/lib/libosmocore.so so try adding it to the linker command line
/home/ich/install/openbsc/lib/libosmocore.so: could not read symbols: Invalid operation
...
../../src/libbsc/libbsc.a(rest_octets.o):/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:381: more undefined references to `bitvec_set_bit' follow
../../src/libbsc/libbsc.a(rest_octets.o): In function `rest_octets_si13':
/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:382: undefined reference to `bitvec_set_uint'
/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:383: undefined reference to `bitvec_set_uint'
/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:385: undefined reference to `bitvec_set_bit'
/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:402: undefined reference to `bitvec_set_bit'
/home/ich/source/gsm/openbsc/openbsc/src/libbsc/rest_octets.c:403: undefined reference to `bitvec_set_uint'
libosmogsm is a new library that is distributed in the libosmocore.
Now, openbsc depends on it. This patch gets openbsc with this
change.
This patch also rewrites all include path to the new
osmocom/[gsm|core]
Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
Alexander Huemer
Neels Hofmeyr
Holger Hans Peter Freyther
Harald Welte