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freeswitch/src/mod/endpoints/mod_exosip/osip_rfc3264.c
Anthony Minessale 64507e70ca icc changes part 1 
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@982 d0543943-73ff-0310-b7d9-9358b9ac24b2
2006-03-30 23:02:50 +00:00

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/*
The oSIP library implements the Session Initiation Protocol (SIP -rfc3261-)
Copyright (C) 2001,2002,2003,2004,2005 Aymeric MOIZARD jack@atosc.org
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef __ICC
#pragma warning (disable:810 869 1418 981)
#endif
#include <stdlib.h>
#include <osipparser2/osip_port.h>
#include <osip_rfc3264.h>
#include <osip_rfc3264i.h> /* internal include */
/**
* Initialize negotiation facility..
* @param config The element to work on.
*/
int
osip_rfc3264_init (struct osip_rfc3264 **config)
{
osip_rfc3264_t *cnf;
*config = NULL;
cnf = (osip_rfc3264_t *) osip_malloc (sizeof (osip_rfc3264_t));
if (cnf == NULL)
return -1;
memset (cnf, 0, sizeof (osip_rfc3264_t));
*config = cnf;
return 0;
}
/**
* Free negotiation facility.
* @param config The element to work on.
*/
void
osip_rfc3264_free (struct osip_rfc3264 *config)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
int i;
if (config == NULL)
return;
for (i = 0; i < MAX_AUDIO_CODECS; i++)
{
if (cnf->audio_medias[i] != NULL)
{
sdp_media_free (cnf->audio_medias[i]);
cnf->audio_medias[i] = NULL;
}
}
for (i = 0; i < MAX_VIDEO_CODECS; i++)
{
if (cnf->video_medias[i] != NULL)
{
sdp_media_free (cnf->video_medias[i]);
cnf->video_medias[i] = NULL;
}
}
for (i = 0; i < MAX_T38_CODECS; i++)
{
if (cnf->t38_medias[i] != NULL)
{
sdp_media_free (cnf->t38_medias[i]);
cnf->t38_medias[i] = NULL;
}
}
for (i = 0; i < MAX_APP_CODECS; i++)
{
if (cnf->app_medias[i] != NULL)
{
sdp_media_free (cnf->app_medias[i]);
cnf->app_medias[i] = NULL;
}
}
osip_free (cnf);
}
/**
* Test if a media exist in the configuration.
* @param config The element to work on.
* @param pos The index of the media element.
*/
int
osip_rfc3264_endof_media (struct osip_rfc3264 *config, int pos)
{
if (config == NULL)
return -1;
return 0;
}
/**
* Get a media from the configuration.
* @param config The element to work on.
* @param pos The index of the media element to get.
*/
sdp_media_t *
osip_rfc3264_get (struct osip_rfc3264 * config, int pos)
{
if (config == NULL)
return NULL;
return NULL;
}
/**
* Remove a media from the configuration.
* @param config The element to work on.
* @param pos The index of the media element to remove.
*/
int
osip_rfc3264_remove (struct osip_rfc3264 *config, int pos)
{
if (config == NULL)
return -1;
return 0;
}
/**
* Remove all medias from the configuration.
* @param config The element to work on.
*/
int
osip_rfc3264_reset_media (struct osip_rfc3264 *config)
{
if (config == NULL)
return -1;
return 0;
}
/**
* Add a media (for audio) in the configuration.
* @param config The element to work on.
* @param med The media element to add.
* @param pos The index of the media element to add.
*/
int
osip_rfc3264_add_audio_media (struct osip_rfc3264 *config, sdp_media_t * med,
int pos)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
if (config == NULL)
return -1;
if (pos >= MAX_AUDIO_CODECS)
return -1;
if (pos == -1)
{
for (pos = 0; pos < MAX_AUDIO_CODECS && cnf->audio_medias[pos] != NULL;
pos++)
{
}
}
if (pos >= MAX_AUDIO_CODECS)
return -1; /* no space left */
cnf->audio_medias[pos] = med;
return 0;
}
/**
* Remove a media in the configuration.
* @param config The element to work on.
* @param pos The index of the media element to remove.
*/
int
osip_rfc3264_del_audio_media (struct osip_rfc3264 *config, int pos)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
if (config == NULL)
return -1;
if (pos >= MAX_AUDIO_CODECS)
return -1;
sdp_media_free (cnf->audio_medias[pos]);
cnf->audio_medias[pos] = NULL;
return 0;
}
/**
* Add a media (for video) in the configuration.
* @param config The element to work on.
* @param med The media element to add.
* @param pos The index of the media element to add.
*/
int
osip_rfc3264_add_video_media (struct osip_rfc3264 *config, sdp_media_t * med,
int pos)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
if (config == NULL)
return -1;
if (pos >= MAX_VIDEO_CODECS)
return -1;
if (pos == -1)
{
for (pos = 0; pos < MAX_VIDEO_CODECS && cnf->video_medias[pos] != NULL;
pos++)
{
}
}
if (pos >= MAX_VIDEO_CODECS)
return -1; /* no space left */
cnf->video_medias[pos] = med;
return 0;
}
/**
* Remove a media in the configuration.
* @param config The element to work on.
* @param pos The index of the media element to remove.
*/
int
osip_rfc3264_del_video_media (struct osip_rfc3264 *config, int pos)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
if (config == NULL)
return -1;
if (pos >= MAX_VIDEO_CODECS)
return -1;
sdp_media_free (cnf->video_medias[pos]);
cnf->video_medias[pos] = NULL;
return 0;
}
/**
* Add a media (for t38) in the configuration.
* @param config The element to work on.
* @param med The media element to add.
* @param pos The index of the media element to add.
*/
int
osip_rfc3264_add_t38_media (struct osip_rfc3264 *config, sdp_media_t * med,
int pos)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
if (config == NULL)
return -1;
if (pos >= MAX_T38_CODECS)
return -1;
if (pos == -1)
{
for (pos = 0; pos < MAX_T38_CODECS && cnf->t38_medias[pos] != NULL; pos++)
{
}
}
if (pos >= MAX_T38_CODECS)
return -1; /* no space left */
cnf->t38_medias[pos] = med;
return 0;
}
/**
* Remove a media in the configuration.
* @param config The element to work on.
* @param pos The index of the media element to remove.
*/
int
osip_rfc3264_del_t38_media (struct osip_rfc3264 *config, int pos)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
if (config == NULL)
return -1;
if (pos >= MAX_T38_CODECS)
return -1;
sdp_media_free (cnf->t38_medias[pos]);
cnf->t38_medias[pos] = NULL;
return 0;
}
/**
* Search for support of a special codec.
* @param config The element to work on.
* @param payload The payload to find.
* @param rtpmap The rtpmap for the payload.
*/
sdp_media_t *
osip_rfc3264_find_audio (struct osip_rfc3264 * config, char *payload, char *rtpmap)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
int i;
if (config == NULL)
return NULL;
if (rtpmap == NULL)
{
for (i = 0; i < MAX_AUDIO_CODECS; i++)
{
if (cnf->audio_medias[i] != NULL)
{
sdp_media_t *med = cnf->audio_medias[i];
char *str = (char *) osip_list_get (med->m_payloads, 0);
/* static payload?: only compare payload number */
if (strlen (str) == strlen (payload)
&& 0 == osip_strcasecmp (str, payload))
return med;
}
}
return NULL;
}
for (i = 0; i < MAX_AUDIO_CODECS; i++)
{
if (cnf->audio_medias[i] != NULL)
{
sdp_media_t *med = cnf->audio_medias[i];
int pos = 0;
while (!osip_list_eol (med->a_attributes, pos))
{
sdp_attribute_t *attr =
(sdp_attribute_t *) osip_list_get (med->a_attributes, pos);
if (0 == osip_strcasecmp ("rtpmap", attr->a_att_field)
&& attr->a_att_value != NULL)
{
char *tmp = strchr (attr->a_att_value, ' ');
char *tmp2 = strchr (rtpmap, ' ');
if (tmp != NULL && tmp2 != NULL)
{
if (0 == osip_strcasecmp (tmp, tmp2))
return med;
}
}
pos++;
}
}
}
return NULL;
}
/**
* Search for support of a special codec.
* @param config The element to work on.
* @param payload The payload to find.
* @param rtpmap The rtpmap for the payload.
*/
sdp_media_t *
osip_rfc3264_find_video (struct osip_rfc3264 * config, char *payload, char *rtpmap)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
int i;
if (config == NULL)
return NULL;
if (rtpmap == NULL)
{
for (i = 0; i < MAX_VIDEO_CODECS; i++)
{
if (cnf->video_medias[i] != NULL)
{
sdp_media_t *med = cnf->video_medias[i];
char *str = (char *) osip_list_get (med->m_payloads, 0);
/* static payload?: only compare payload number */
if (strlen (str) == strlen (payload)
&& 0 == osip_strcasecmp (str, payload))
return med;
}
}
return NULL;
}
for (i = 0; i < MAX_VIDEO_CODECS; i++)
{
if (cnf->video_medias[i] != NULL)
{
sdp_media_t *med = cnf->video_medias[i];
int pos = 0;
while (!osip_list_eol (med->a_attributes, pos))
{
sdp_attribute_t *attr =
(sdp_attribute_t *) osip_list_get (med->a_attributes, pos);
if (0 == osip_strcasecmp ("rtpmap", attr->a_att_field)
&& attr->a_att_value != NULL)
{
char *tmp = strchr (attr->a_att_value, ' ');
char *tmp2 = strchr (rtpmap, ' ');
if (tmp != NULL && tmp2 != NULL)
{
if (0 == osip_strcasecmp (tmp, tmp2))
return med;
}
}
pos++;
}
}
}
return NULL;
}
/**
* Search for support of a special codec.
* @param config The element to work on.
* @param payload The payload to find.
*/
sdp_media_t *
osip_rfc3264_find_t38 (struct osip_rfc3264 * config, char *payload)
{
//osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
if (config == NULL)
return NULL;
return NULL;
}
/**
* Search for support of a special codec.
* @param config The element to work on.
* @param payload The payload to find.
*/
sdp_media_t *
osip_rfc3264_find_app (struct osip_rfc3264 * config, char *payload)
{
// osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
if (config == NULL)
return NULL;
return NULL;
}
/**
* Compare remote sdp packet against local supported media.
* Only one media line is checked.
*
* @param config The element to work on.
* @param remote_sdp The remote SDP packet.
* @param audio_tab The local list of media supported by both side.
* @param video_tab The local list of media supported by both side.
* @param t38_tab The local list of media supported by both side.
* @param app_tab The local list of media supported by both side.
* @param pos_media The position of the media line to match.
*/
int
osip_rfc3264_match (struct osip_rfc3264 *config,
sdp_message_t * remote_sdp,
sdp_media_t * audio_tab[],
sdp_media_t * video_tab[],
sdp_media_t * t38_tab[],
sdp_media_t * app_tab[], int pos_media)
{
sdp_media_t *remote_med;
int pos;
audio_tab[0] = NULL;
video_tab[0] = NULL;
t38_tab[0] = NULL;
app_tab[0] = NULL;
if (config == NULL)
return -1;
pos = 0;
while (!sdp_message_endof_media (remote_sdp, pos))
{
if (pos_media == 0)
{
remote_med = osip_list_get (remote_sdp->m_medias, pos);
if (remote_med->m_media != NULL
&& 0 == osip_strcasecmp (remote_med->m_media, "audio"))
{
osip_rfc3264_match_audio (config, remote_sdp, remote_med, audio_tab);
} else if (remote_med->m_media != NULL
&& 0 == osip_strcasecmp (remote_med->m_media, "video"))
{
osip_rfc3264_match_video (config, remote_sdp, remote_med, video_tab);
} else if (remote_med->m_media != NULL
&& 0 == osip_strcasecmp (remote_med->m_media, "image"))
{
osip_rfc3264_match_t38 (config, remote_sdp, remote_med, t38_tab);
} else if (remote_med->m_media != NULL
&& 0 == osip_strcasecmp (remote_med->m_media, "application"))
{
osip_rfc3264_match_app (config, remote_sdp, remote_med, app_tab);
}
return 0;
}
remote_med = NULL;
pos++;
pos_media--;
}
return -1;
}
/**
* Compare remote sdp packet against local supported media for audio.
* @param config The element to work on.
* @param remote_sdp The remote SDP packet.
* @param remote_med The remote Media SDP line.
* @param audio_tab The local list of media supported by both side.
*/
int
osip_rfc3264_match_audio (struct osip_rfc3264 *config,
sdp_message_t * remote_sdp,
sdp_media_t * remote_med, sdp_media_t * audio_tab[])
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
int num = 0;
int pos;
audio_tab[0] = NULL;
if (cnf == NULL)
return -1;
/* search for the audio media line */
pos = 0;
while (!osip_list_eol (remote_med->m_payloads, pos))
{
char *payload = (char *) osip_list_get (remote_med->m_payloads, pos);
sdp_media_t *local_med;
char *rtpmap = NULL;
int posattr = 0;
/* search for the rtpmap associated to the payload */
while (!osip_list_eol (remote_med->a_attributes, posattr))
{
sdp_attribute_t *attr =
(sdp_attribute_t *) osip_list_get (remote_med->a_attributes,
posattr);
if (0 == osip_strncasecmp (attr->a_att_field, "rtpmap", 6))
{
if (attr->a_att_value != NULL &&
0 == osip_strncasecmp (attr->a_att_value, payload,
strlen (payload)))
{
/* TODO check if it was not like 101: == 10 */
rtpmap = attr->a_att_value;
break;
}
}
posattr++;
}
local_med = osip_rfc3264_find_audio (config, payload, rtpmap);
if (local_med != NULL)
{
/* found a supported codec? */
audio_tab[num] = local_med;
num++;
}
/* search for support of this codec in local media list */
pos++;
}
audio_tab[num] = NULL;
return 0;
}
/**
* Compare remote sdp packet against local supported media for video.
* @param config The element to work on.
* @param remote_sdp The remote SDP packet.
* @param remote_med The remote Media SDP line.
* @param video_tab The local list of media supported by both side.
*/
int
osip_rfc3264_match_video (struct osip_rfc3264 *config,
sdp_message_t * remote_sdp,
sdp_media_t * remote_med, sdp_media_t * video_tab[])
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
int num = 0;
int pos;
video_tab[0] = NULL;
if (cnf == NULL)
return -1;
/* search for the video media line */
pos = 0;
while (!osip_list_eol (remote_med->m_payloads, pos))
{
char *payload = (char *) osip_list_get (remote_med->m_payloads, pos);
sdp_media_t *local_med;
char *rtpmap = NULL;
int posattr = 0;
/* search for the rtpmap associated to the payload */
while (!osip_list_eol (remote_med->a_attributes, posattr))
{
sdp_attribute_t *attr =
(sdp_attribute_t *) osip_list_get (remote_med->a_attributes,
posattr);
if (0 == osip_strncasecmp (attr->a_att_field, "rtpmap", 6))
{
if (attr->a_att_value != NULL &&
0 == osip_strncasecmp (attr->a_att_value, payload,
strlen (payload)))
{
/* TODO check if it was not like 101: == 10 */
rtpmap = attr->a_att_value;
break;
}
}
posattr++;
}
local_med = osip_rfc3264_find_video (config, payload, rtpmap);
if (local_med != NULL)
{
/* found a supported codec? */
video_tab[num] = local_med;
num++;
}
/* search for support of this codec in local media list */
pos++;
}
video_tab[num] = NULL;
return 0;
}
/**
* Compare remote sdp packet against local supported media for t38.
* @param config The element to work on.
* @param remote_sdp The remote SDP packet.
* @param remote_med The remote Media SDP line.
* @param t38_tab The local list of media supported by both side.
*/
int
osip_rfc3264_match_t38 (struct osip_rfc3264 *config,
sdp_message_t * remote_sdp,
sdp_media_t * remote_med, sdp_media_t * t38_tab[])
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
t38_tab[0] = NULL;
if (cnf == NULL)
return -1;
return 0;
}
/**
* Compare remote sdp packet against local supported media for application.
* @param config The element to work on.
* @param remote_sdp The remote SDP packet.
* @param remote_med The remote Media SDP line.
* @param app_tab The local list of media supported by both side.
*/
int
osip_rfc3264_match_app (struct osip_rfc3264 *config,
sdp_message_t * remote_sdp,
sdp_media_t * remote_med, sdp_media_t * app_tab[])
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
app_tab[0] = NULL;
if (cnf == NULL)
return -1;
return 0;
}
/**
* Prepare an uncomplete answer.
* @param config The element to work on.
* @param remote_sdp The remote SDP packet.
* @param local_sdp The local SDP packet to prepare.
* @param length The local SDP packet's length.
*/
int
osip_rfc3264_prepare_answer (struct osip_rfc3264 *config,
sdp_message_t * remote_sdp,
char *local_sdp, int length)
{
int pos, pos2;
if (config == NULL)
return -1;
if (remote_sdp == NULL)
return -1;
if (osip_list_size (remote_sdp->t_descrs) > 0)
#if !defined __PALMOS__ && (defined WIN32 || defined _WIN32_WCE)
_snprintf (local_sdp, 4096, "v=0\r\n\
o=userX 20000001 20000001 IN IP4 TOREPLACE\r\n\
s=-\r\n\
c=IN IP4 TOREPLACE\r\n");
#else
snprintf (local_sdp, 4096, "v=0\r\n\
o=userX 20000001 20000001 IN IP4 TOREPLACE\r\n\
s=-\r\n\
c=IN IP4 TOREPLACE\r\n");
#endif
/* Fill t= (and r=) fields */
pos = 0;
while (!osip_list_eol (remote_sdp->t_descrs, pos))
{
char tmp[100];
sdp_time_descr_t *td;
td = (sdp_time_descr_t *) osip_list_get (remote_sdp->t_descrs, pos);
if (td->t_start_time != NULL && td->t_stop_time != NULL)
#if !defined __PALMOS__ && (defined WIN32 || defined _WIN32_WCE)
_snprintf (tmp, 100, "t=%s %s\r\n", td->t_start_time, td->t_stop_time);
#else
snprintf (tmp, 100, "t=%s %s\r\n", td->t_start_time, td->t_stop_time);
#endif
else
#if !defined __PALMOS__ && (defined WIN32 || defined _WIN32_WCE)
_snprintf (tmp, 100, "t=0 0\r\n");
#else
snprintf (tmp, 100, "t=0 0\r\n");
#endif
if ((int) (strlen (local_sdp) + strlen (tmp) + 1) < length)
{
strcat (local_sdp, tmp);
pos2 = 0;
while (!osip_list_eol (td->r_repeats, pos2))
{
char *str = (char *) osip_list_get (td->r_repeats, pos2);
if ((int) (strlen (local_sdp) + strlen (str) + 5 + 1) < length)
{
strcat (local_sdp, "r=");
strcat (local_sdp, str);
strcat (local_sdp, "\r\n");
} else
return -1;
pos2++;
}
} else
return -1;
pos++;
}
pos = 0;
while (!osip_list_eol (remote_sdp->m_medias, pos))
{
int posattr = 0;
char tmp[200];
char tmp2[200];
char inactive = 'X';
sdp_media_t *med;
#if !defined __PALMOS__ && (defined WIN32 || defined _WIN32_WCE)
_snprintf (tmp2, 199, "\r\n");
#else
snprintf (tmp2, 199, "\r\n");
#endif
med = (sdp_media_t *) osip_list_get (remote_sdp->m_medias, pos);
/* search for the rtpmap associated to the payload */
while (!osip_list_eol (med->a_attributes, posattr))
{
sdp_attribute_t *attr =
(sdp_attribute_t *) osip_list_get (med->a_attributes, posattr);
if (strlen (attr->a_att_field) == 8 && attr->a_att_value == NULL)
{
if (0 == osip_strncasecmp (attr->a_att_field, "sendonly", 8))
{
#if !defined __PALMOS__ && (defined WIN32 || defined _WIN32_WCE)
_snprintf (tmp2, 199, "\r\na=recvonly\r\n");
#else
snprintf (tmp2, 199, "\r\na=recvonly\r\n");
#endif
break;
} else if (0 == osip_strncasecmp (attr->a_att_field, "recvonly", 8))
{
#if !defined __PALMOS__ && (defined WIN32 || defined _WIN32_WCE)
_snprintf (tmp2, 199, "\r\na=sendonly\r\n");
#else
snprintf (tmp2, 199, "\r\na=sendonly\r\n");
#endif
break;
} else if (0 == osip_strncasecmp (attr->a_att_field, "sendrecv", 8))
{
break;
} else if (0 == osip_strncasecmp (attr->a_att_field, "inactive", 8))
{
#if !defined __PALMOS__ && (defined WIN32 || defined _WIN32_WCE)
_snprintf (tmp2, 199, "\r\na=inactive\r\n");
#else
snprintf (tmp2, 199, "\r\na=inactive\r\n");
#endif
inactive = '0';
break;
}
}
posattr++;
}
if (med->m_media != NULL && med->m_proto != NULL
&& med->m_number_of_port == NULL)
{
#if !defined __PALMOS__ && (defined WIN32 || defined _WIN32_WCE)
_snprintf (tmp, 199, "m=%s %c %s ", med->m_media, inactive,
med->m_proto);
#else
snprintf (tmp, 199, "m=%s %c %s ", med->m_media, inactive, med->m_proto);
#endif
} else if (med->m_media != NULL && med->m_proto != NULL
&& med->m_number_of_port != NULL)
{
#if !defined __PALMOS__ && (defined WIN32 || defined _WIN32_WCE)
_snprintf (tmp, 199, "m=%s %c %s/%s ", med->m_media, inactive,
med->m_proto, med->m_number_of_port);
#else
snprintf (tmp, 199, "m=%s %c %s/%s ", med->m_media, inactive,
med->m_proto, med->m_number_of_port);
#endif
} else
return -1;
if ((int) (strlen (local_sdp) + strlen (tmp) + 1) < length)
strcat (local_sdp, tmp);
else
return -1;
if ((int) (strlen (local_sdp) + strlen (tmp2) + 1) < length)
strcat (local_sdp, tmp2);
else
return -1;
pos++;
}
return 0;
}
/**
* Agree to support a specific codec.
* This method should be called for each codec returned by
* osip_rfc3264_match(...) that the calle agree to support.
*
* @param config The element to work on.
* @param remote_sdp The remote SDP packet.
* @param local_sdp The local SDP packet to complete.
* @param med One of the media returned by osip_rfc3264_match.
* @param mline The position of the media line to complete.
*/
int
osip_rfc3264_complete_answer (struct osip_rfc3264 *config,
sdp_message_t * remote_sdp,
sdp_message_t * local_sdp,
sdp_media_t * med, int mline)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
sdp_media_t *remote_med = NULL;
sdp_media_t *local_med = NULL;
int pos;
if (cnf == NULL)
return -1;
if (remote_sdp == NULL)
return -1;
if (med == NULL)
return -1;
if (mline < 0)
return -1;
if (local_sdp == NULL)
return -1;
pos = 0;
while (!osip_list_eol (remote_sdp->m_medias, pos))
{
remote_med = (sdp_media_t *) osip_list_get (remote_sdp->m_medias, pos);
local_med = (sdp_media_t *) osip_list_get (local_sdp->m_medias, pos);
if (pos == mline)
break;
remote_med = NULL;
local_med = NULL;
pos++;
}
if (remote_med == NULL)
return -1;
pos = 0;
while (!osip_list_eol (med->a_attributes, pos))
{
sdp_attribute_t *attr =
(sdp_attribute_t *) osip_list_get (med->a_attributes, pos);
if (0 == osip_strcasecmp ("rtpmap", attr->a_att_field)
&& attr->a_att_value != NULL)
{
sdp_attribute_t *mattr;
char *tmp;
/* fill the m= line */
tmp = (char *) osip_list_get (med->m_payloads, 0);
if (tmp != NULL)
osip_list_add (local_med->m_payloads, osip_strdup (tmp), -1);
else
return -1;
sdp_attribute_init (&mattr);
mattr->a_att_field = osip_strdup (attr->a_att_field);
mattr->a_att_value = osip_strdup (attr->a_att_value);
/* fill the a= line */
osip_list_add (local_med->a_attributes, mattr, -1);
return 0;
}
}
return -1; /* no rtpmap found? It is mandatory in audio and video media */
}
/**
* Agree to support a specific codec.
* This method should be called for each codec returned by
* osip_rfc3264_match(...)
*
* @param config The element to work on.
* @param med One of the media returned by osip_rfc3264_match
* @param remote_sdp The remote SDP packet.
* @param local_sdp The local SDP packet to prepare.
*/
int
osip_rfc3264_accept_codec (struct osip_rfc3264 *config,
sdp_media_t * med,
sdp_message_t * remote_sdp, sdp_message_t * local_sdp)
{
if (config == NULL)
return -1;
return 0;
}
/* #ifdef RFC3264_DEBUG */
/**
* List supported codecs. (for debugging purpose only)
*
* @param config The element to work on.
*/
int
__osip_rfc3264_print_codecs (struct osip_rfc3264 *config)
{
osip_rfc3264_t *cnf = (osip_rfc3264_t *) config;
int i, pos;
if (config == NULL)
return -1;
fprintf (stdout, "Audio codecs Supported:\n");
for (i = 0; i < MAX_AUDIO_CODECS; i++)
{
if (cnf->audio_medias[i] != NULL)
{
sdp_media_t *med = cnf->audio_medias[i];
char *str = (char *) osip_list_get (med->m_payloads, 0);
fprintf (stdout, "\tm=%s %s %s %s\n",
med->m_media, med->m_port, med->m_proto, str);
pos = 0;
while (!osip_list_eol (med->a_attributes, pos))
{
sdp_attribute_t *attr =
(sdp_attribute_t *) osip_list_get (med->a_attributes, pos);
fprintf (stdout, "\ta=%s:%s\n",
attr->a_att_field, attr->a_att_value);
pos++;
}
fprintf (stdout, "\n");
}
}
fprintf (stdout, "Video codecs Supported:\n");
for (i = 0; i < MAX_VIDEO_CODECS; i++)
{
if (cnf->video_medias[i] != NULL)
{
sdp_media_t *med = cnf->video_medias[i];
char *str = (char *) osip_list_get (med->m_payloads, 0);
fprintf (stdout, "\tm=%s %s %s %s\n",
med->m_media, med->m_port, med->m_proto, str);
pos = 0;
while (!osip_list_eol (med->a_attributes, pos))
{
sdp_attribute_t *attr =
(sdp_attribute_t *) osip_list_get (med->a_attributes, pos);
fprintf (stdout, "\ta=%s:%s\n",
attr->a_att_field, attr->a_att_value);
pos++;
}
fprintf (stdout, "\n");
}
}
fprintf (stdout, "t38 configs Supported:\n");
for (i = 0; i < MAX_T38_CODECS; i++)
{
if (cnf->t38_medias[i] != NULL)
{
sdp_media_t *med = cnf->t38_medias[i];
fprintf (stdout, "m=%s %s %s X\n",
med->m_media, med->m_port, med->m_proto);
pos = 0;
while (!osip_list_eol (med->a_attributes, pos))
{
sdp_attribute_t *attr =
(sdp_attribute_t *) osip_list_get (med->a_attributes, pos);
fprintf (stdout, "\ta=%s:%s\n",
attr->a_att_field, attr->a_att_value);
pos++;
}
fprintf (stdout, "\n");
}
}
fprintf (stdout, "Application config Supported:\n");
for (i = 0; i < MAX_APP_CODECS; i++)
{
if (cnf->app_medias[i] != NULL)
{
sdp_media_t *med = cnf->app_medias[i];
fprintf (stdout, "m=%s %s %s X\n",
med->m_media, med->m_port, med->m_proto);
pos = 0;
while (!osip_list_eol (med->a_attributes, pos))
{
sdp_attribute_t *attr =
(sdp_attribute_t *) osip_list_get (med->a_attributes, pos);
fprintf (stdout, "\ta=%s:%s\n",
attr->a_att_field, attr->a_att_value);
pos++;
}
fprintf (stdout, "\n");
}
}
return 0;
}
/* #endif */
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