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%FEATURE Add new feature to filter the SDP on bypass_media calls to remove or limit codecs.

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VARIABLE: bypass_media_sdp_filter

Can be set globally or per leg on the inbound side of a bypass_media bridge.

VALID FILTERS:

remove(): Removes the specified codec if it exists in the SDP.
only():   Removes all codecs besides the one specified (providing that it exists in the sdp) (will not remove telephone-event))

EXAMPLE 1 (remove everything leaving only g729):

  <action application="set" data="bypass_media_sdp_filter=only(g729)"/>
  <action application="set" data="bypass_media=true"/>
  <action application="bridge" data="sofia/internal/1238@conference.freeswitch.org"/>

EXAMPLE 2 (remove everything leaving only g729 and also remove dtmf):

  <action application="set" data="bypass_media_sdp_filter=only(g729)|remove(telephone-event)"/>
  <action application="set" data="bypass_media=true"/>
  <action application="bridge" data="sofia/internal/1238@conference.freeswitch.org"/>

EXAMPLE 3 (remove alaw and speex):

  <action application="set" data="bypass_media_sdp_filter=remove(pcma)|remove(speex)"/>
  <action application="set" data="bypass_media=true"/>
  <action application="bridge" data="sofia/internal/1238@conference.freeswitch.org"/>
This commit is contained in:
Anthony Minessale
2014-10-01 01:28:10 +05:00
parent 92a66fb1e7
commit 24084adf77
9 changed files with 306 additions and 18 deletions
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19
src/switch_utils.c
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@@ -1231,6 +1231,25 @@ SWITCH_DECLARE(switch_bool_t) switch_is_number(const char *str)
return r;
}
SWITCH_DECLARE(switch_bool_t) switch_is_leading_number(const char *str)
{
const char *p;
switch_bool_t r = SWITCH_FALSE;
if (*str == '-' || *str == '+') {
str++;
}
for (p = str; p && *p; p++) {
if ((*p == '.' || (*p > 47 && *p < 58))) {
r = SWITCH_TRUE;
break;
}
}
return r;
}
SWITCH_DECLARE(const char *) switch_stristr(const char *instr, const char *str)
{
/*