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Some RTP endpoints may not check for bad frame indications, so a frame
that is marked as bad may be still forwarded, which creates anoying noise.
This patch drops these frames. It depends on the other RTP endpoint how
dropped frames are handled. (insert silence, extrapolate speech...)
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Since EFR/AMR/HR codecs use dynamic RTP payload, the payload type can
be set. If it is set, the frame type must be set also, so OpenBSC
knows what frame types are received via RTP.
This modification only affects traffic beween application and MNCC
interface, not the RTP traffic between OpenBSC and BTS.
Conflicts:
openbsc/src/libtrau/rtp_proxy.c
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Instead of forwarding traffic through MNCC interface, traffic can
be forwarded to a given RTP peer directly. A special MNCC message
is used to control the peer's destination. The traffic can still be
forwarded through MNCC interface when this special MNCC message is
not used.
It also works with E1 based BTSs.
In conjunction with LCR's "rtp-bridge" feature, the RTP traffic
can be directly exchanged with a remote SIP endpoint, so that the
traffic is not forwarded by LCR itself. This way the performance
of handling traffic only depends on OpenBSC and the remote SIP
endpoint. Also the traffic is exchanged with the SIP endpoint
without transcoding, to have maximum performance.
Increment MNCC version to 5.
Conflicts:
openbsc/tests/gbproxy/gbproxy_test.c
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When reading from RTP socket, the first read() may fail right after
connecting to remote socket. Subsequent read() will work as it should.
If the remote socket does not open fast enough, the transmitted RTP
payload can cause an ICMP (connection refused) packet reply. This causes
the read to fail with errno=111. In all other error cases, the errno is
logged at debug level. In all error cases, reading is not disabled.
Conflicts:
openbsc/src/libtrau/rtp_proxy.c
[hfreyther: Fix typo, stop reading in all cases but ECONNREFUSED]
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We allocate the msgb at entry of the method and we always need
to msgb_free it.
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If a bad TRAU frame is received, it is forwarded to MNCC application
as GSM_BAD_FRAME. The application can now handle the GAP of missing
audio. (e.g. by extrapolation)
If TRAU frames are forwarded via RTP, bad frames are dropped, but frame
counter and timestamp of RTP sender state is incremented.
Conflicts:
openbsc/src/libtrau/rtp_proxy.c
[hfreyther: Merge without testcase, fix typo]
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We depend on libosmo-netif unconditionally. Let's use this
definition of rtp and have one portability issue less.
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commit 65be6de155407142ddab44faf8aee5f8d5ebf628 removed the RTP
timesetamp mangling and thus the only caller to tv_difference(),
which can now be removed, too.
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We tend to comment out this code every XXC3, let's just get rid
off it. The nanoBTS has a rather odd timing behavior. Jacob has
spent hours this summer to trial/document/fix it in the MGCP code
and this code is not getting close to working around the ip.access
audio issues.
If someobody still wants to use the nanoBTS then he should help
to have the MGCP MGW use/share code with the rtp_proxy.c
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rtp_proxy.c: In function ‘rtp_decode’:
rtp_proxy.c:199:8: warning: assignment from incompatible pointer type
frame = msgb_put(new_msg, sizeof(struct gsm_data_frame));
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In rtcp_sdes_cname_mangle when skipping over additional zeroes at the
end of a chunk we should not read past the actual message (rtcp_end).
Fixes CID #1206579
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When forwarding AMR from RTP towards the MNCC interface, we need to set
the apropriate msg_type. Before this patch it was unitialized,
resulting in improper/unknown msg_types of messages on the MNCC
interface.
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AMR frames on the MNCC interface are slightly different as they
include a single-byte payload_length indicator prior to the actual
payload. Commit 3f201ac89952b68d05c0bb6cb41932b9cd898b19 introduced
more special-case handling than required, so I'm trying to simplify
things again.
We now also use msgb_put() more consistently, i.e. always put
before actually using the data, and use the return value of msgb_put()
rather than first making assumptions about the pointer, writing to it
and then calling msgb_put().
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AMR rate is currently fixed to 5.9k.
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This patch fixes a corner case (padding 1, payload size incl padding
0) which is not being detected correctly.
Sponsored-by: On-Waves ehf
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Byte order defines have a DARWIN prefix on OSX so the values openbsc
expects are set from their Darwin counterparts when compiled on OSX.
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This is a big patch that ports openBSC over libosmo-abis.
Sorry, the changes that are included here are all dependent
of libosmo-abis, splitting them into smaller pieces would
leave the repository in some intermediate state, which is
not desired.
The main changes are:
- The directory libabis/ has been removed as it now lives in
libosmo-abis.
- new configuration file format for nanoBTS and HSL femto, we
need to define the virtual e1_line and attach it to the OML
link.
- all the existing BTS drivers (nanoBTS, hsl femto, Nokia site,
BS11 and rbs2000) now use the new libosmo-abis framework.
- use r232 input driver available in libosmo-abis for bs11_config.
- use ipa_msg_recv instead of old ipaccess_read_msg function.
- delete definition of gsm_e1_subslot and input_signal_data.
These structures now lives in libosmo-abis.
Most of this patch are deletions of libabis/ which has been
moved to libosmo-abis.
This patch also modifies openBSC to use all the new definitions
available in libosmocore and libosmo-abis. In order to do that,
we have replaced the following:
- DINP, DMI, DMIB and DMUX by their respective DL* correspondences.
- SS_GLOBAL by SS_L_GLOBAL
- SS_INPUT by SS_L_INPUT
- S_GLOBAL_SHUTDOWN by S_L_GLOBAL_SHUTDOWN
- SS_INPUT by SS_L_INPUT
- S_INP_* by S_L_INP_* sub-signals
- E1INP_NODE by L_E1INP_NODE vty node
This patch has been tested with:
- one nanoBTS
- the HSL femto with the examples available under libosmo-abis
- BS11 with both dahdi and misdn drivers.
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This should not introduce any functional changes, it just re-arranges
some definitions in the header file, and introduces the ROLE_BSC
define that we enable for the BSC-specific fields.
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Summary of changes:
s/struct bsc_fd/struct osmo_fd/g
s/bsc_register_fd/osmo_fd_register/g
s/bsc_unregister_fd/osmo_fd_unregister/g
s/bsc_select_main/osmo_select_main/g
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These are not needed any more. We used them for u_int
types but we now use uint which comes from stdint.h
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This was done with sed on the files.
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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>
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... and make sure tests work again after restructuring
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