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Add support for parsing SDP attributes, generating SDP attributes, and passing it through.

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This support includes codecs such as H.263, H.264, SILK, and CELT. You are able to set up a call and have attribute information pass. This should help considerably with video calls.

Review: https://reviewboard.asterisk.org/r/2005/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@370055 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp
2012-07-13 16:49:40 +00:00
parent 2603707f30
commit a693fd1d87
6 changed files with 180 additions and 41 deletions
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45
main/format.c
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@@ -119,6 +119,51 @@ static int has_interface(const struct ast_format *format)
return 1;
}
int ast_format_sdp_parse(struct ast_format *format, const char *attributes)
{
struct interface_ao2_wrapper *wrapper;
int res;
if (!(wrapper = find_interface(format))) {
return 0;
}
ao2_rdlock(wrapper);
if (!(wrapper->interface || !wrapper->interface->format_attr_sdp_parse)) {
ao2_unlock(wrapper);
ao2_ref(wrapper, -1);
return 0;
}
res = wrapper->interface->format_attr_sdp_parse(&format->fattr, attributes);
ao2_unlock(wrapper);
ao2_ref(wrapper, -1);
return res;
}
void ast_format_sdp_generate(const struct ast_format *format, unsigned int payload, struct ast_str **str)
{
struct interface_ao2_wrapper *wrapper;
if (!(wrapper = find_interface(format))) {
return;
}
ao2_rdlock(wrapper);
if (!(wrapper->interface || !wrapper->interface->format_attr_sdp_generate)) {
ao2_unlock(wrapper);
ao2_ref(wrapper, -1);
return;
}
wrapper->interface->format_attr_sdp_generate(&format->fattr, payload, str);
ao2_unlock(wrapper);
ao2_ref(wrapper, -1);
}
/*! \internal
* \brief set format attributes using an interface
*/