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mpv/stream/freesdp/parser.c

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/*
This file is part of FreeSDP
Copyright (C) 2001,2002,2003 Federico Montesino Pouzols <fedemp@altern.org>
FreeSDP is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Benjamin Zores, (C) 2006
added support in parser for the a=control: lines.
added support in parser for the a=range: lines.
*/
/**
* @file parser.c
*
* @short Parsing module implementation.
*
* This file implements the parsing routine <code>fsdp_parse</code>
* and the <code>fsdp_get_xxxx</code> routines that allow to get the
* session properties from a session description object build through
* the application of <code>fsdp_parse</code> to a textual SDP session
* description.
**/
#include "parserpriv.h"
/**
* \brief find the start of the next line
* \param c pointer to current position in string
* \return pointer to start of next line or NULL if illegal (i.e.
* a '\r' is not followed by a '\n'
*/
static const char *next_line(const char *c) {
c += strcspn(c, "\n\r");
if (*c == 0) return c;
if (*c == '\r') c++;
if (*c == '\n')
return c + 1;
return NULL;
}
/**
* Moves the <code>c<code> pointer up to the beginning of the next
* line.
*
* @param c char pointer to pointer
* @retval FSDPE_ILLEGAL_CHARACTER, when an illegal '\r' character
* (not followed by a '\n') is found, returns
*/
#define NEXT_LINE(c) do { if (!(c = next_line(c))) return FSDPE_ILLEGAL_CHARACTER; } while (0);
fsdp_error_t
fsdp_parse (const char *text_description, fsdp_description_t * dsc)
{
fsdp_error_t result;
const char *p = text_description, *p2;
unsigned int index, j;
/* temps for sscanf */
const unsigned int TEMPCHARS = 6;
char fsdp_buf[TEMPCHARS][MAXSHORTFIELDLEN];
char longfsdp_buf[MAXLONGFIELDLEN];
const unsigned int TEMPINTS = 2;
unsigned long int wuint[TEMPINTS];
if ((NULL == text_description) || (NULL == dsc))
return FSDPE_INVALID_PARAMETER;
/***************************************************************************/
/* A) parse session-level description */
/***************************************************************************/
/* `v=' line (protocol version) */
/* according to the RFC, only `v=0' is valid */
if (sscanf (p, "v=%1lu", &wuint[0]))
{
if (wuint[0] != 0)
return FSDPE_INVALID_VERSION;
}
else
{
return FSDPE_MISSING_VERSION;
}
NEXT_LINE (p);
/* `o=' line (owner/creator and session identifier) */
/* o=<username> <session id> <version> <network type> <address type>
<address> */
if (!strncmp (p, "o=", 2))
{
p += 2;
/* note that the following max lengths may vary in the future and
are quite arbitary */
if (sscanf
(p,
"%" MSFLENS "[\x21-\xFF] %" MSFLENS "[0-9] %" MSFLENS
"[0-9] %2s %3s %" MSFLENS "s", fsdp_buf[0], fsdp_buf[1],
fsdp_buf[2], fsdp_buf[3], fsdp_buf[4], fsdp_buf[5]) != 6)
return FSDPE_INVALID_OWNER;
dsc->o_username = strdup (fsdp_buf[0]);
dsc->o_session_id = strdup (fsdp_buf[1]);
dsc->o_announcement_version = strdup (fsdp_buf[2]);
if (!strncmp (fsdp_buf[3], "IN", 2))
{
dsc->o_network_type = FSDP_NETWORK_TYPE_INET;
if (!strncmp (fsdp_buf[4], "IP4", 3))
dsc->o_address_type = FSDP_ADDRESS_TYPE_IPV4;
else if (!strncmp (fsdp_buf[4], "IP6", 3))
dsc->o_address_type = FSDP_ADDRESS_TYPE_IPV6;
else
return FSDPE_INVALID_OWNER;
}
else
{
return FSDPE_INVALID_OWNER;
}
/* TODO? check valid unicast address/FQDN */
dsc->o_address = strdup (fsdp_buf[5]);
}
else
{
return FSDPE_MISSING_OWNER;
}
NEXT_LINE (p);
/* `s=' line (session name) -note that the name string cannot be empty */
/* s=<session name> */
if (!strncmp (p, "s=", 2))
{
if (sscanf (p, "s=%" MLFLENS "[^\r\n]", longfsdp_buf) < 1)
return FSDPE_EMPTY_NAME;
dsc->s_name = strdup (longfsdp_buf);
}
else
{
return FSDPE_MISSING_NAME;
}
NEXT_LINE (p);
/* `i=' line (session information) [optional] */
/* i=<session description> */
if (!strncmp (p, "i=", 2)
&& sscanf (p, "i=%" MLFLENS "[^\r\n]", longfsdp_buf))
{
dsc->i_information = strdup (longfsdp_buf);
NEXT_LINE (p);
}
else
{
/* (optional) information absent */
}
/* `u=' line (URI of description) [optional] */
/* u=<URI> */
if (!strncmp (p, "u=", 2)
&& sscanf (p, "u=%" MLFLENS "[^\r\n]", longfsdp_buf))
{
/* TODO? check valid uri */
dsc->u_uri = strdup (longfsdp_buf);
NEXT_LINE (p);
}
else
{
/* (optional) uri absent */
}
/* `e=' lines (email address) [zero or more] */
/* e=<email address> */
p2 = p;
j = 0;
while (!strncmp (p2, "e=", 2))
{
/* First, count how many emails are there */
j++;
NEXT_LINE (p2);
}
dsc->emails_count = j;
if (dsc->emails_count > 0)
{
/* Then, build the array of emails */
dsc->emails = calloc (j, sizeof (const char *));
for (j = 0; j < dsc->emails_count; j++)
{
sscanf (p, "e=%" MLFLENS "[^\r\n]", longfsdp_buf);
/* TODO? check valid email-address. */
dsc->emails[j] = strdup (longfsdp_buf);
NEXT_LINE (p);
}
}
/* `p=' lines (phone number) [zero or more] */
/* p=<phone number> */
j = 0;
/* assert ( p2 == p ); */
while (!strncmp (p2, "p=", 2))
{
j++;
NEXT_LINE (p2);
}
dsc->phones_count = j;
if (dsc->phones_count > 0)
{
dsc->phones = calloc (j, sizeof (const char *));
for (j = 0; j < dsc->phones_count; j++)
{
sscanf (p, "p=%" MLFLENS "[^\r\n]", longfsdp_buf);
/* TODO? check valid phone-number. */
dsc->phones[j] = strdup (longfsdp_buf);
NEXT_LINE (p);
}
}
/* `c=' line (connection information - not required if included in all media) [optional] */
/* c=<network type> <address type> <connection address> */
result = fsdp_parse_c (&p, &(dsc->c_network_type), &(dsc->c_address_type),
&(dsc->c_address));
if (FSDPE_OK != result)
return result;
/* `b=' lines (bandwidth information) [optional] */
/* b=<modifier>:<bandwidth-value> */
result =
fsdp_parse_b (&p, &(dsc->bw_modifiers), &(dsc->bw_modifiers_count));
if (FSDPE_OK != result)
return result;
/* A.1) Time descriptions: */
/* `t=' lines (time the session is active) [1 or more] */
/* t=<start time> <stop time> */
j = 0;
p2 = p;
while (!strncmp (p2, "t=", 2))
{
j++;
NEXT_LINE (p2);
while (!strncmp (p2, "r=", 2))
NEXT_LINE (p2);
}
dsc->time_periods_count = j;
if (dsc->time_periods_count == 0)
return FSDPE_MISSING_TIME;
dsc->time_periods = calloc (dsc->time_periods_count,
sizeof (fsdp_time_period_t *));
index = 0;
for (j = 0; j < dsc->time_periods_count; j++)
{
unsigned int h = 0;
if (sscanf (p, "t=%10lu %10lu", &wuint[0], &wuint[1]) != 2)
{
/* not all periods have been successfully parsed */
dsc->time_periods_count = j;
return FSDPE_INVALID_TIME;
}
dsc->time_periods[j] = calloc (1, sizeof (fsdp_time_period_t));
/* convert from NTP to time_t time */
if (wuint[0] != 0)
wuint[0] -= NTP_EPOCH_OFFSET;
if (wuint[1] != 0)
wuint[1] -= NTP_EPOCH_OFFSET;
dsc->time_periods[j]->start = wuint[0];
dsc->time_periods[j]->stop = wuint[1];
NEXT_LINE (p);
/* `r' lines [zero or more repeat times for each t=] */
/*r=<repeat interval> <active duration> <list of offsets from
start-time> */
p2 = p;
while (!strncmp (p2, "r=", 2))
{
h++;
NEXT_LINE (p2);
}
dsc->time_periods[j]->repeats_count = h;
if (h > 0)
{
unsigned int index2 = 0;
dsc->time_periods[j]->repeats =
calloc (h, sizeof (fsdp_repeat_t *));
for (h = 0; h < dsc->time_periods[j]->repeats_count; h++)
{
/*
get_repeat_values(p,&(dsc->time_periods[index].repeats[index2]));
fsdp_error_t get_repeat_values (const char *r, fsdp_repeat_t
*repeat);
*/
if (sscanf (p, "r=%10s %10s %" MLFLENS "[^\r\n]",
fsdp_buf[0], fsdp_buf[1], longfsdp_buf) == 3)
{
fsdp_repeat_t *repeat;
dsc->time_periods[j]->repeats[h] =
calloc (1, sizeof (fsdp_repeat_t));
repeat = dsc->time_periods[j]->repeats[h];
/* get interval, duration and list of offsets */
result =
fsdp_repeat_time_to_uint (fsdp_buf[0],
&(repeat->interval));
if (result == FSDPE_OK)
{
result =
fsdp_repeat_time_to_uint (fsdp_buf[1],
&(repeat->duration));
if (result == FSDPE_OK)
{
unsigned int k = 1;
const char *i = longfsdp_buf;
while (NULL != (i = strchr (i, ' ')))
{
k++;
if (NULL != i)
i++;
}
repeat->offsets_count = k;
repeat->offsets = calloc (k, sizeof (time_t));
i = longfsdp_buf;
for (k = 0;
(k < repeat->offsets_count)
&& (result == FSDPE_OK); k++)
{
result =
fsdp_repeat_time_to_uint (i,
&(repeat->
offsets[k]));
i = strchr (i, ' ');
if (NULL != i)
i++;
}
if (k < repeat->offsets_count)
{
/* there where invalid repeat offsets */
dsc->time_periods[j]->repeats_count = k;
return FSDPE_INVALID_REPEAT;
}
}
}
if (result != FSDPE_OK)
{
/* not all repeats have been succesfully parsed */
dsc->time_periods[j]->repeats_count = h;
return FSDPE_INVALID_REPEAT;
}
NEXT_LINE (p);
}
else
{
/* not all repeats have been succesfully parsed */
dsc->time_periods[j]->repeats_count = h;
return FSDPE_INVALID_REPEAT;
}
index2++;
}
}
}
/* `z=' line (time zone adjustments) [zero or more] */
/* z=<adjustment time> <offset> <adjustment time> <offset> .... */
if (!strncmp (p, "z=", 2))
{
if (sscanf (p, "z=%" MLFLENS "[^\r\n]", longfsdp_buf))
{
/* TODO: guess how many pairs are there and process them */
dsc->timezone_adj = strdup (longfsdp_buf);
NEXT_LINE (p);
}
else
{
return FSDPE_INVALID_TIMEZONE;
}
}
/* `k=' line (encryption key) [optional] */
/* k=<method>
k=<method>:<encryption key> */
result = fsdp_parse_k (&p, &(dsc->k_encryption_method),
&(dsc->k_encryption_content));
if (result != FSDPE_OK)
return result;
/* A.2) Attributes */
/* `a=' lines (session attribute) [0 or more] */
/* a=<attribute>
a=<attribute>:<value> */
while (!strncmp (p, "a=", 2))
{
/* The "9" lenght specifier of the first string is subject to
changes */
if (sscanf
(p, "a=%9[^:\r\n]:%" MSFLENS "[^\r\n]", fsdp_buf[0],
fsdp_buf[1]) == 2)
{
/* session-level value attributes */
if (!strncmp (fsdp_buf[0], "cat", 3))
dsc->a_category = strdup (fsdp_buf[1]);
else if (!strncmp (fsdp_buf[0], "keywds", 6))
dsc->a_keywords = strdup (fsdp_buf[1]);
else if (!strncmp (fsdp_buf[0], "tool", 4))
dsc->a_keywords = strdup (fsdp_buf[1]);
else if (!strncmp (fsdp_buf[0], "rtpmap", 6))
fsdp_parse_rtpmap (&(dsc->a_rtpmaps),
&(dsc->a_rtpmaps_count), fsdp_buf[1]);
else if (!strncmp (fsdp_buf[0], "type", 4))
{
if (!strncmp (fsdp_buf[1], "broadcast", 9))
dsc->a_type = FSDP_SESSION_TYPE_BROADCAST;
else if (!strncmp (fsdp_buf[1], "meeting", 7))
dsc->a_type = FSDP_SESSION_TYPE_MEETING;
else if (!strncmp (fsdp_buf[1], "moderated", 9))
dsc->a_type = FSDP_SESSION_TYPE_MODERATED;
else if (!strncmp (fsdp_buf[1], "test", 4))
dsc->a_type = FSDP_SESSION_TYPE_TEST;
else if (!strncmp (fsdp_buf[1], "H332", 4))
dsc->a_type = FSDP_SESSION_TYPE_H332;
else
return FSDPE_INVALID_SESSION_TYPE;
}
else if (!strncmp (fsdp_buf[0], "charset", 7))
dsc->a_charset = strdup (fsdp_buf[1]);
else if (!strncmp (fsdp_buf[0], "sdplang", 7))
{
if (NULL == dsc->a_sdplangs)
{
dsc->a_sdplangs_count = 0;
dsc->a_sdplangs =
calloc (SDPLANGS_MAX_COUNT, sizeof (char *));
}
if (dsc->a_sdplangs_count < SDPLANGS_MAX_COUNT)
{
dsc->a_sdplangs[dsc->a_sdplangs_count] =
strdup (fsdp_buf[1]);
dsc->a_sdplangs_count++;
}
}
else if (!strncmp (fsdp_buf[0], "lang", 4))
{
if (NULL == dsc->a_langs)
{
dsc->a_langs_count = 0;
dsc->a_langs = calloc (SDPLANGS_MAX_COUNT, sizeof (char *));
}
if (dsc->a_langs_count < SDPLANGS_MAX_COUNT)
{
dsc->a_langs[dsc->a_langs_count] = strdup (fsdp_buf[1]);
dsc->a_langs_count++;
}
}
else if (!strncmp (fsdp_buf[0], "control", 7))
{
if (NULL == dsc->a_controls)
{
dsc->a_controls_count = 0;
dsc->a_controls =
calloc (SDPCONTROLS_MAX_COUNT, sizeof (char *));
}
if (dsc->a_controls_count < SDPCONTROLS_MAX_COUNT)
{
dsc->a_controls[dsc->a_controls_count] =
strdup (fsdp_buf[1]);
dsc->a_controls_count++;
}
}
else if (!strncmp (fsdp_buf[0], "range", 5))
{
if (dsc->a_range)
free (dsc->a_range);
dsc->a_range = strdup (fsdp_buf[1]);
}
else
{
/* ignore unknown attributes, but provide access to them */
*longfsdp_buf = '\0';
strncat (longfsdp_buf, fsdp_buf[0], MAXLONGFIELDLEN-1);
strncat (longfsdp_buf, ":", MAXLONGFIELDLEN-strlen(longfsdp_buf)-1);
strncat (longfsdp_buf, fsdp_buf[1], MAXLONGFIELDLEN-strlen(longfsdp_buf)-1);
if (NULL == dsc->unidentified_attributes)
{
dsc->unidentified_attributes_count = 0;
dsc->unidentified_attributes =
calloc (UNIDENTIFIED_ATTRIBUTES_MAX_COUNT,
sizeof (char *));
}
if (dsc->unidentified_attributes_count <
UNIDENTIFIED_ATTRIBUTES_MAX_COUNT)
{
dsc->unidentified_attributes
[dsc->unidentified_attributes_count] =
strdup (longfsdp_buf);
dsc->unidentified_attributes_count++;
}
}
NEXT_LINE (p);
}
else if (sscanf (p, "a=%20s", fsdp_buf[0]) == 1)
{
/* session-level property attributes */
if (!strncmp (fsdp_buf[0], "recvonly", 8))
dsc->a_sendrecv_mode = FSDP_SENDRECV_RECVONLY;
else if (!strncmp (fsdp_buf[0], "sendonly", 8))
dsc->a_sendrecv_mode = FSDP_SENDRECV_SENDONLY;
else if (!strncmp (fsdp_buf[0], "inactive", 8))
dsc->a_sendrecv_mode = FSDP_SENDRECV_INACTIVE;
else if (!strncmp (fsdp_buf[0], "sendrecv", 8))
dsc->a_sendrecv_mode = FSDP_SENDRECV_SENDRECV;
else
{
/* ignore unknown attributes, but provide access to them */
*longfsdp_buf = '\0';
strncat (longfsdp_buf, fsdp_buf[0], MAXLONGFIELDLEN-1);
if (NULL == dsc->unidentified_attributes)
{
dsc->unidentified_attributes_count = 0;
dsc->unidentified_attributes =
calloc (UNIDENTIFIED_ATTRIBUTES_MAX_COUNT,
sizeof (char *));
}
if (dsc->unidentified_attributes_count <
UNIDENTIFIED_ATTRIBUTES_MAX_COUNT)
{
dsc->unidentified_attributes
[dsc->unidentified_attributes_count] =
strdup (longfsdp_buf);
dsc->unidentified_attributes_count++;
}
}
NEXT_LINE (p);
}
else
return FSDPE_INVALID_ATTRIBUTE;
}
/***************************************************************************/
/* B) parse media-level descriptions */
/***************************************************************************/
p2 = p;
j = 0;
while ((*p2 != '\0') && !strncmp (p2, "m=", 2))
{
char c;
j++;
NEXT_LINE (p2);
while (sscanf (p2, "%c=", &c) == 1)
{
if (c == 'i' || c == 'c' || c == 'b' || c == 'k' || c == 'a')
{
NEXT_LINE (p2);
}
else if (c == 'm')
{
break;
}
else
{
return FSDPE_INVALID_LINE;
}
}
}
dsc->media_announcements_count = j;
if (dsc->media_announcements_count == 0)
{
;
/*return FSDPE_MISSING_MEDIA; */
}
else
{ /* dsc->media_announcements_count > 0 */
dsc->media_announcements =
calloc (j, sizeof (fsdp_media_announcement_t *));
for (j = 0; j < dsc->media_announcements_count; j++)
{
fsdp_media_announcement_t *media = NULL;
/* `m=' line (media name, transport address and format list) */
/* m=<media> <port> <transport> <fmt list> */
/* The max. string lengths are subject to change */
if (sscanf (p, "m=%11s %8s %7s %" MLFLENS "[^\r\n]",
fsdp_buf[0], fsdp_buf[1], fsdp_buf[2],
longfsdp_buf) != 4)
{
return FSDPE_INVALID_MEDIA;
}
else
{
dsc->media_announcements[j] =
calloc (1, sizeof (fsdp_media_announcement_t));
media = dsc->media_announcements[j];
if (!strncmp (fsdp_buf[0], "audio", 5))
media->media_type = FSDP_MEDIA_AUDIO;
else if (!strncmp (fsdp_buf[0], "video", 5))
media->media_type = FSDP_MEDIA_VIDEO;
else if (!strncmp (fsdp_buf[0], "application", 11))
media->media_type = FSDP_MEDIA_APPLICATION;
else if (!strncmp (fsdp_buf[0], "data", 4))
media->media_type = FSDP_MEDIA_DATA;
else if (!strncmp (fsdp_buf[0], "control", 7))
media->media_type = FSDP_MEDIA_CONTROL;
else
return FSDPE_UNKNOWN_MEDIA_TYPE;
{ /* try to get port specification as port/number */
char *slash;
if ((slash = strchr (fsdp_buf[1], '/')))
{
*slash = '\0';
slash++;
media->port = strtol (fsdp_buf[1], NULL, 10);
media->port_count = strtol (slash, NULL, 10);
}
else
{
media->port = strtol (fsdp_buf[1], NULL, 10);
media->port_count = 0;
}
}
if (!strncmp (fsdp_buf[2], "RTP/AVP", 7))
media->transport = FSDP_TP_RTP_AVP;
else if (!strncmp (fsdp_buf[2], "udp", 3))
media->transport = FSDP_TP_UDP;
else if (!strncmp (fsdp_buf[2], "TCP", 3))
media->transport = FSDP_TP_TCP;
else if (!strncmp (fsdp_buf[2], "UDPTL", 5))
media->transport = FSDP_TP_UDPTL;
else if (!strncmp (fsdp_buf[2], "vat", 3))
media->transport = FSDP_TP_VAT;
else if (!strncmp (fsdp_buf[2], "rtp", 3))
media->transport = FSDP_TP_OLD_RTP;
else
return FSDPE_UNKNOWN_MEDIA_TRANSPORT;
{
unsigned int k = 0;
char *s = longfsdp_buf;
while (NULL != (s = strchr (s, ' ')))
{
k++;
if (NULL != s)
s++;
}
k++; /* when there is no space left, count the last format */
media->formats_count = k;
media->formats = calloc (k, sizeof (char *));
s = longfsdp_buf;
for (k = 0; k < media->formats_count; k++)
{
char *space = strchr (s, ' ');
if (NULL != space)
*space = '\0';
media->formats[k] = strdup (s);
s = space + 1;
}
}
NEXT_LINE (p);
}
/* `i=' line (media title) [optional] */
/* i=<media title> */
if (!strncmp (p, "i=", 2)
&& sscanf (p, "i=%" MLFLENS "[^\r\n]", longfsdp_buf))
{
media->i_title = strdup (longfsdp_buf);
NEXT_LINE (p);
}
else
{
/* (optional) information absent */
}
/* `c=' line (connection information - overrides session-level
line) [optional if provided at session-level] */
/* c=<network type> <address type> <connection address> */
result = fsdp_parse_c (&p, &(media->c_network_type),
&(media->c_address_type),
&(media->c_address));
if (result != FSDPE_OK)
return result;
/* `b=' lines (bandwidth information) [optional] */
/* b=<modifier>:<bandwidth-value> */
result = fsdp_parse_b (&p, &(media->bw_modifiers),
&(media->bw_modifiers_count));
if (FSDPE_OK != result)
return result;
/* `k=' line (encryption key) [optional] */
/* k=<method>
k=<method>:<encryption key> */
result = fsdp_parse_k (&p, &(media->k_encryption_method),
&(media->k_encryption_content));
if (result != FSDPE_OK)
return result;
/* B.1) Attributes */
/* `a=' lines (zero or more media attribute lines) [optional] */
/* a=<attribute>
a=<attribute>:<value> */
while (!strncmp (p, "a=", 2))
{
if (sscanf
(p, "a=%9[^:\r\n]:%" MLFLENS "[^\r\n]", fsdp_buf[0],
longfsdp_buf) == 2)
{
/* media-level value attributes */
if (!strncmp (fsdp_buf[0], "ptime", 5))
media->a_ptime = strtoul (longfsdp_buf, NULL, 10);
else if (!strncmp (fsdp_buf[0], "maxptime", 8))
media->a_maxptime = strtoul (longfsdp_buf, NULL, 10);
else if (!strncmp (fsdp_buf[0], "rtpmap", 6))
fsdp_parse_rtpmap (&(media->a_rtpmaps),
&(media->a_rtpmaps_count),
longfsdp_buf);
else if (!strncmp (fsdp_buf[0], "orient", 6))
{
if (!strncmp (longfsdp_buf, "portrait", 8))
media->a_orient = FSDP_ORIENT_PORTRAIT;
else if (!strncmp (longfsdp_buf, "landscape", 9))
media->a_orient = FSDP_ORIENT_LANDSCAPE;
else if (!strncmp (longfsdp_buf, "seascape", 9))
media->a_orient = FSDP_ORIENT_SEASCAPE;
}
else if (!strncmp (fsdp_buf[0], "sdplang", 7))
{
if (NULL == dsc->a_sdplangs)
{
media->a_sdplangs_count = 0;
media->a_sdplangs =
calloc (SDPLANGS_MAX_COUNT, sizeof (char *));
}
if (media->a_sdplangs_count < SDPLANGS_MAX_COUNT)
{
media->a_sdplangs[dsc->a_sdplangs_count] =
strdup (longfsdp_buf);
media->a_sdplangs_count++;
}
}
else if (!strncmp (fsdp_buf[0], "lang", 4))
{
if (NULL == dsc->a_langs)
{
media->a_langs_count = 0;
media->a_langs =
calloc (SDPLANGS_MAX_COUNT, sizeof (char *));
}
if (media->a_langs_count < SDPLANGS_MAX_COUNT)
{
media->a_langs[dsc->a_langs_count] =
strdup (longfsdp_buf);
media->a_langs_count++;
}
}
else if (!strncmp (fsdp_buf[0], "control", 7))
{
if (NULL == media->a_controls)
{
media->a_controls_count = 0;
media->a_controls =
calloc (SDPCONTROLS_MAX_COUNT, sizeof (char *));
}
if (media->a_controls_count < SDPCONTROLS_MAX_COUNT)
{
media->a_controls[media->a_controls_count] =
strdup (longfsdp_buf);
media->a_controls_count++;
}
}
else if (!strncmp (fsdp_buf[0], "range", 5))
{
if (media->a_range)
free (media->a_range);
media->a_range = strdup (fsdp_buf[1]);
}
else if (!strncmp (fsdp_buf[0], "framerate", 9))
media->a_framerate = strtod (longfsdp_buf, NULL);
else if (!strncmp (fsdp_buf[0], "fmtp", 4))
{
if (NULL == media->a_fmtps)
{
media->a_fmtps_count = 0;
media->a_fmtps =
calloc (SDPLANGS_MAX_COUNT, sizeof (char *));
}
if (media->a_fmtps_count < SDPLANGS_MAX_COUNT)
{
media->a_fmtps[media->a_fmtps_count] =
strdup (longfsdp_buf);
media->a_fmtps_count++;
}
}
else if (!strncmp (fsdp_buf[0], "rtcp", 4))
{
int opts = 0;
/* rtcp attribute: a=rtcp:<port> <nettype> <addrtype> <address> */
opts =
sscanf (longfsdp_buf, "%lu %2s %3s %" MSFLENS "s",
&wuint[0], fsdp_buf[0], fsdp_buf[1],
fsdp_buf[2]);
if (opts >= 1)
{
media->a_rtcp_port = wuint[0];
if (opts >= 2)
{
if (!strncmp (fsdp_buf[0], "IN", 2))
{
media->a_rtcp_network_type =
FSDP_NETWORK_TYPE_INET;
} /* else
; TODO: define error code? */
if (opts >= 3)
{
if (!strncmp (fsdp_buf[1], "IP4", 3))
media->a_rtcp_address_type =
FSDP_ADDRESS_TYPE_IPV4;
else if (!strncmp (fsdp_buf[1], "IP6", 3))
media->a_rtcp_address_type =
FSDP_ADDRESS_TYPE_IPV6;
else
return FSDPE_INVALID_CONNECTION_NETTYPE;
/*add specific code? */
if (opts >= 4)
media->a_rtcp_address =
strdup (fsdp_buf[2]);
}
}
}
}
else
{
/* ignore unknown attributes, but provide access to them */
*fsdp_buf[1] = '\0';
strncat (fsdp_buf[1], fsdp_buf[0], MAXSHORTFIELDLEN-1);
strncat (fsdp_buf[1], ":", MAXSHORTFIELDLEN-strlen(fsdp_buf[1])-1);
strncat (fsdp_buf[1], longfsdp_buf, MAXSHORTFIELDLEN-strlen(fsdp_buf[1])-1);
if (NULL == media->unidentified_attributes)
{
media->unidentified_attributes_count = 0;
media->unidentified_attributes =
calloc (UNIDENTIFIED_ATTRIBUTES_MAX_COUNT,
sizeof (char *));
}
if (media->unidentified_attributes_count <
UNIDENTIFIED_ATTRIBUTES_MAX_COUNT)
{
media->unidentified_attributes
[media->unidentified_attributes_count] =
strdup (fsdp_buf[1]);
media->unidentified_attributes_count++;
}
}
NEXT_LINE (p);
}
else if (sscanf (p, "a=%8s", fsdp_buf[0]) == 1)
{
/* media-level property attributes */
if (!strncmp (fsdp_buf[0], "recvonly", 8))
media->a_sendrecv_mode = FSDP_SENDRECV_RECVONLY;
else if (!strncmp (fsdp_buf[0], "sendonly", 8))
media->a_sendrecv_mode = FSDP_SENDRECV_SENDONLY;
else if (!strncmp (fsdp_buf[0], "inactive", 8))
media->a_sendrecv_mode = FSDP_SENDRECV_INACTIVE;
else if (!strncmp (fsdp_buf[0], "sendrecv", 8))
media->a_sendrecv_mode = FSDP_SENDRECV_SENDRECV;
else
{
/* ignore unknown attributes, but provide access to them */
*longfsdp_buf = '\0';
strncat (longfsdp_buf, fsdp_buf[0], MAXLONGFIELDLEN-1);
if (NULL == media->unidentified_attributes)
{
media->unidentified_attributes_count = 0;
media->unidentified_attributes =
calloc (UNIDENTIFIED_ATTRIBUTES_MAX_COUNT,
sizeof (char *));
}
if (media->unidentified_attributes_count <
UNIDENTIFIED_ATTRIBUTES_MAX_COUNT)
{
media->unidentified_attributes
[media->unidentified_attributes_count] =
strdup (longfsdp_buf);
media->unidentified_attributes_count++;
}
}
NEXT_LINE (p);
}
else
return FSDPE_INVALID_ATTRIBUTE;
}
} /* end of for */
}
/* Check c= has been given at session level or at media level for
all media */
if (NULL == dsc->c_address.address)
{
unsigned int c;
for (c = 0; c < dsc->media_announcements_count; c++)
if (NULL == dsc->media_announcements[c]->c_address.address)
return FSDPE_MISSING_CONNECTION_INFO;
}
/* finish */
if (*p == '\0')
return FSDPE_OK;
else
return FSDPE_OVERFILLED;
}
static fsdp_error_t
fsdp_parse_c (const char **p, fsdp_network_type_t * ntype,
fsdp_address_type_t * atype,
fsdp_connection_address_t * address)
{
const unsigned int TEMPCHARS = 3;
char fsdp_buf[TEMPCHARS][MAXSHORTFIELDLEN];
if (!strncmp (*p, "c=", 2))
{
if (sscanf (*p, "c=%2s %3s %" MSFLENS "s",
fsdp_buf[0], fsdp_buf[1], fsdp_buf[2]))
{
if (!strncmp (fsdp_buf[0], "IN", 2))
{
*ntype = FSDP_NETWORK_TYPE_INET;
if (!strncmp (fsdp_buf[1], "IP4", 3))
*atype = FSDP_ADDRESS_TYPE_IPV4;
else if (!strncmp (fsdp_buf[1], "IP6", 3))
*atype = FSDP_ADDRESS_TYPE_IPV6;
else
return FSDPE_INVALID_CONNECTION_NETTYPE;
}
else
{
return FSDPE_INVALID_CONNECTION_ADDRTYPE;
}
{
char *slash = strchr (fsdp_buf[2], '/');
if (NULL == slash)
{
address->address = strdup (fsdp_buf[2]);
address->address_ttl = 0;
address->address_count = 0;
}
else
{
/* address is IP4 multicast */
char *slash2;
*slash = '\0';
slash++;
address->address = strdup (fsdp_buf[2]);
slash2 = strchr (slash + 1, '/');
if (NULL == slash2)
{
address->address_ttl = strtol (slash, NULL, 10);
address->address_count = 0;
}
else
{
*slash2 = '\0';
slash2++;
address->address_ttl = strtol (slash, NULL, 10);
address->address_count = strtol (slash2, NULL, 10);
}
}
}
NEXT_LINE (*p);
}
else
{
return FSDPE_INVALID_CONNECTION;
}
}
return FSDPE_OK;
}
static fsdp_error_t
fsdp_parse_b (const char **p, fsdp_bw_modifier_t ** bw_modifiers,
unsigned int *bw_modifiers_count)
{
char fsdp_buf[MAXSHORTFIELDLEN];
unsigned long int wuint;
unsigned int i = 0;
const char *lp = *p;
/* count b= lines */
while (!strncmp (lp, "b=", 2))
{
NEXT_LINE (lp);
i++;
}
*bw_modifiers = calloc (i, sizeof (fsdp_bw_modifier_t));
*bw_modifiers_count = i;
while (i > 0)
{
unsigned int index = *bw_modifiers_count - i;
if (2 == sscanf (*p, "b=%20[^:\r\n]:%lu", fsdp_buf, &wuint))
{
if (!strncmp (fsdp_buf, "CT", 2))
(*bw_modifiers)[index].b_mod_type =
FSDP_BW_MOD_TYPE_CONFERENCE_TOTAL;
else if (!strncmp (fsdp_buf, "AS", 2))
(*bw_modifiers)[index].b_mod_type =
FSDP_BW_MOD_TYPE_APPLICATION_SPECIFIC;
else if (!strncmp (fsdp_buf, "RS", 2))
(*bw_modifiers)[index].b_mod_type = FSDP_BW_MOD_TYPE_RTCP_SENDERS;
else if (!strncmp (fsdp_buf, "RR", 2))
(*bw_modifiers)[index].b_mod_type =
FSDP_BW_MOD_TYPE_RTCP_RECEIVERS;
else
{
(*bw_modifiers)[index].b_mod_type = FSDP_BW_MOD_TYPE_UNKNOWN;
(*bw_modifiers)[index].b_unknown_bw_modt =
(char *) strdup (fsdp_buf);
}
(*bw_modifiers)[index].b_value = wuint;
NEXT_LINE (*p);
}
else
{
*bw_modifiers_count -= i;
return FSDPE_INVALID_BANDWIDTH;
}
i--;
}
return FSDPE_OK;
}
static fsdp_error_t
fsdp_parse_k (const char **p, fsdp_encryption_method_t * method,
char **content)
{
char fsdp_buf[MAXSHORTFIELDLEN];
char longfsdp_buf[MAXLONGFIELDLEN];
if (!strncmp (*p, "k=", 2))
{
if (sscanf (*p, "k=prompt"))
{
*method = FSDP_ENCRYPTION_METHOD_PROMPT;
*content = NULL;
NEXT_LINE (*p);
}
else
{
if (sscanf
(*p, "k=%6[^:\r\n]:%" MLFLENS "s", fsdp_buf, longfsdp_buf))
{
if (!strncmp (fsdp_buf, "clear", 5))
*method = FSDP_ENCRYPTION_METHOD_CLEAR;
else if (!strncmp (fsdp_buf, "base64", 6))
*method = FSDP_ENCRYPTION_METHOD_BASE64;
else if (!strncmp (fsdp_buf, "uri", 3))
*method = FSDP_ENCRYPTION_METHOD_URI;
else
return FSDPE_INVALID_ENCRYPTION_METHOD;
*content = strdup (longfsdp_buf);
NEXT_LINE (*p);
}
}
}
return FSDPE_OK;
}
static fsdp_error_t
fsdp_parse_rtpmap (fsdp_rtpmap_t *** rtpmap, unsigned int *counter,
const char *value)
{
fsdp_error_t result = FSDPE_OK;
if (0 == *counter)
{
*counter = 0;
*rtpmap = calloc (MEDIA_RTPMAPS_MAX_COUNT, sizeof (fsdp_rtpmap_t *));
}
if (*counter < MEDIA_RTPMAPS_MAX_COUNT)
{
unsigned int c = *counter;
fsdp_rtpmap_t **map = *rtpmap;
char fsdp_buf[MAXSHORTFIELDLEN];
char longfsdp_buf[MAXLONGFIELDLEN];
map[c] = calloc (1, sizeof (fsdp_rtpmap_t));
/* a=rtpmap:<payload type> <encoding name>/<clock rate>[/<encoding
parameters]> */
if (2 == sscanf (value, "%s %s", fsdp_buf, longfsdp_buf))
{
char *slash1;
map[c]->pt = strdup (fsdp_buf);
/* parse <encoding name>/<clock rate>[/<encoding parameters>] */
slash1 = strchr (longfsdp_buf, '/');
if (NULL == slash1)
{
result = FSDPE_INVALID_ATTRIBUTE_RTPMAP;
}
else
{
char *slash2;
*slash1 = '\0';
slash1++;
map[c]->encoding_name = strdup (longfsdp_buf);
slash2 = strchr (slash1, '/');
if (NULL != slash2)
{
*slash2 = '\0';
slash2++;
map[c]->parameters = strdup (slash2);
}
map[c]->clock_rate = strtol (slash1, NULL, 10);
}
(*counter)++;
}
}
return result;
}
static fsdp_error_t
fsdp_repeat_time_to_uint (const char *time, unsigned long int *seconds)
{
const unsigned long SECONDS_PER_DAY = 86400;
const unsigned long SECONDS_PER_HOUR = 3600;
const unsigned long SECONDS_PER_MINUTE = 60;
char c;
unsigned long int wuint;
if (sscanf (time, "%lu%c", &wuint, &c) == 2)
{
/* time with unit specification character */
switch (c)
{
case 'd':
*seconds = wuint * SECONDS_PER_DAY;
break;
case 'h':
*seconds = wuint * SECONDS_PER_HOUR;
break;
case 'm':
*seconds = wuint * SECONDS_PER_MINUTE;
break;
case 's':
*seconds = wuint;
break;
default:
return FSDPE_INVALID_REPEAT;
break;
}
}
else if (sscanf (time, "%lu", &wuint) == 1)
{
/* time without unit specification character */
*seconds = wuint;
}
else
{
return FSDPE_INVALID_REPEAT;
}
return FSDPE_OK;
}
unsigned int
fsdp_get_version (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->version;
}
const char *
fsdp_get_owner_username (const fsdp_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->o_username;
}
const char *
fsdp_get_session_id (const fsdp_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->o_session_id;
}
const char *
fsdp_get_announcement_version (const fsdp_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->o_announcement_version;
}
fsdp_network_type_t
fsdp_get_owner_network_type (const fsdp_description_t * dsc)
{
if (!dsc)
return FSDP_NETWORK_TYPE_UNDEFINED;
return dsc->o_network_type;
}
fsdp_address_type_t
fsdp_get_owner_address_type (const fsdp_description_t * dsc)
{
if (!dsc)
return FSDP_ADDRESS_TYPE_UNDEFINED;
return dsc->o_address_type;
}
const char *
fsdp_get_owner_address (const fsdp_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->o_address;
}
const char *
fsdp_get_name (const fsdp_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->s_name;
}
const char *
fsdp_get_information (const fsdp_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->i_information;
}
const char *
fsdp_get_uri (const fsdp_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->u_uri;
}
unsigned int
fsdp_get_emails_count (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->emails_count;
}
const char *
fsdp_get_email (const fsdp_description_t * dsc, unsigned int index)
{
if ((!dsc) || (index >= dsc->emails_count))
return NULL;
return dsc->emails[index];
}
unsigned int
fsdp_get_phones_count (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->phones_count;
}
const char *
fsdp_get_phone (const fsdp_description_t * dsc, unsigned int index)
{
if ((!dsc) || (index >= dsc->phones_count))
return NULL;
return dsc->phones[index];
}
fsdp_network_type_t
fsdp_get_global_conn_network_type (const fsdp_description_t * dsc)
{
if (!dsc)
return FSDP_NETWORK_TYPE_UNDEFINED;
return dsc->c_network_type;
}
fsdp_address_type_t
fsdp_get_global_conn_address_type (const fsdp_description_t * dsc)
{
if (!dsc)
return FSDP_ADDRESS_TYPE_UNDEFINED;
return dsc->c_address_type;
}
const char *
fsdp_get_global_conn_address (const fsdp_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->c_address.address;
}
unsigned int
fsdp_get_global_conn_address_ttl (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->c_address.address_ttl;
}
unsigned int
fsdp_get_global_conn_address_count (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->c_address.address_count;
}
unsigned int
fsdp_get_bw_modifier_count (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->bw_modifiers_count;
}
fsdp_bw_modifier_type_t
fsdp_get_bw_modifier_type (const fsdp_description_t * dsc, unsigned int index)
{
if ((!dsc) || (index >= dsc->bw_modifiers_count))
return FSDP_BW_MOD_TYPE_UNDEFINED;
return dsc->bw_modifiers[index].b_mod_type;
}
const char *
fsdp_get_bw_modifier_type_unknown (const fsdp_description_t * dsc,
unsigned int index)
{
if ((!dsc) || (index >= dsc->bw_modifiers_count) ||
(dsc->bw_modifiers[index].b_mod_type != FSDP_BW_MOD_TYPE_UNKNOWN))
return NULL;
return dsc->bw_modifiers[index].b_unknown_bw_modt;
}
unsigned long int
fsdp_get_bw_value (const fsdp_description_t * dsc, unsigned int index)
{
if ((!dsc) || (index >= dsc->bw_modifiers_count))
return 0;
return dsc->bw_modifiers[index].b_value;
}
time_t
fsdp_get_period_start (const fsdp_description_t * dsc, unsigned int index)
{
if ((!dsc) || (index >= dsc->time_periods_count))
return 0;
return dsc->time_periods[index]->start;
}
time_t
fsdp_get_period_stop (const fsdp_description_t * dsc, unsigned int index)
{
if ((!dsc) || (index >= dsc->time_periods_count))
return 0;
return dsc->time_periods[index]->stop;
}
unsigned int
fsdp_get_period_repeats_count (const fsdp_description_t * dsc,
unsigned int index)
{
if ((!dsc) || (index >= dsc->time_periods_count))
return 0;
return dsc->time_periods[index]->repeats_count;
}
unsigned long int
fsdp_get_period_repeat_interval (const fsdp_description_t * dsc,
unsigned int index, unsigned int rindex)
{
if ((!dsc) || (index >= dsc->time_periods_count))
return 0;
return dsc->time_periods[index]->repeats[rindex]->interval;
}
unsigned long int
fsdp_get_period_repeat_duration (const fsdp_description_t * dsc,
unsigned int index, unsigned int rindex)
{
if ((!dsc) || (index >= dsc->time_periods_count))
return 0;
return dsc->time_periods[index]->repeats[rindex]->duration;
}
const unsigned long int *
fsdp_get_period_repeat_offsets (const fsdp_description_t * dsc,
unsigned int index, unsigned int rindex)
{
if ((!dsc) || (index >= dsc->time_periods_count))
return NULL;
return dsc->time_periods[index]->repeats[rindex]->offsets;
}
const char *
fsdp_get_timezone_adj (const fsdp_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->timezone_adj;
}
unsigned int
fsdp_get_unidentified_attribute_count (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->unidentified_attributes_count;
}
const char *
fsdp_get_unidentified_attribute (const fsdp_description_t * dsc,
unsigned int index)
{
if (!dsc || (index < dsc->unidentified_attributes_count))
return NULL;
return dsc->unidentified_attributes[index];
}
fsdp_encryption_method_t
fsdp_get_encryption_method (const fsdp_description_t * dsc)
{
if (!dsc)
return FSDP_ENCRYPTION_METHOD_UNDEFINED;
return dsc->k_encryption_method;
}
const char *
fsdp_get_encryption_content (const fsdp_description_t * dsc)
{
if (!dsc || (dsc->k_encryption_method == FSDP_ENCRYPTION_METHOD_UNDEFINED))
return NULL;
return dsc->k_encryption_content;
}
unsigned int
fsdp_get_rtpmap_count (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->a_rtpmaps_count;
}
const char *
fsdp_get_rtpmap_payload_type (const fsdp_description_t * dsc,
unsigned int index)
{
if ((!dsc) || (index >= dsc->a_rtpmaps_count))
return NULL;
return dsc->a_rtpmaps[index]->pt;
}
const char *
fsdp_get_rtpmap_encoding_name (const fsdp_description_t * dsc,
unsigned int index)
{
if ((!dsc) || (index >= dsc->a_rtpmaps_count))
return NULL;
return dsc->a_rtpmaps[index]->encoding_name;
}
unsigned int
fsdp_get_rtpmap_clock_rate (const fsdp_description_t * dsc,
unsigned int index)
{
if ((!dsc) || (index >= dsc->a_rtpmaps_count))
return 0;
return dsc->a_rtpmaps[index]->clock_rate;
}
const char *
fsdp_get_rtpmap_encoding_parameters (const fsdp_description_t * dsc,
unsigned int index)
{
if ((!dsc) || (index >= dsc->a_rtpmaps_count))
return NULL;
return dsc->a_rtpmaps[index]->parameters;
}
const char *
fsdp_get_str_att (const fsdp_description_t * dsc, fsdp_session_str_att_t att)
{
/*TODO: change these individual attributes with a table, thus
avoiding this slow switch */
char *result;
if (!dsc)
return NULL;
switch (att)
{
case FSDP_SESSION_STR_ATT_CATEGORY:
result = dsc->a_category;
break;
case FSDP_SESSION_STR_ATT_KEYWORDS:
result = dsc->a_keywords;
break;
case FSDP_SESSION_STR_ATT_TOOL:
result = dsc->a_tool;
break;
case FSDP_SESSION_STR_ATT_CHARSET:
result = dsc->a_charset;
break;
default:
result = NULL;
}
return result;
}
unsigned int
fsdp_get_sdplang_count (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->a_sdplangs_count;
}
const char *
fsdp_get_sdplang (const fsdp_description_t * dsc, unsigned int index)
{
if ((!dsc) || (index >= dsc->a_sdplangs_count))
return NULL;
return dsc->a_sdplangs[index];
}
unsigned int
fsdp_get_lang_count (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->a_langs_count;
}
const char *
fsdp_get_lang (const fsdp_description_t * dsc, unsigned int index)
{
if ((!dsc) || (index >= dsc->a_langs_count))
return NULL;
return dsc->a_langs[index];
}
unsigned int
fsdp_get_control_count (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->a_controls_count;
}
const char *
fsdp_get_control (const fsdp_description_t * dsc, unsigned int index)
{
if ((!dsc) || (index >= dsc->a_controls_count))
return NULL;
return dsc->a_controls[index];
}
const char *
fsdp_get_range (const fsdp_description_t * dsc)
{
return dsc->a_range;
}
fsdp_sendrecv_mode_t
fsdp_get_sendrecv_mode (const fsdp_description_t * dsc)
{
if (!dsc)
return FSDP_SENDRECV_UNDEFINED;
return dsc->a_sendrecv_mode;
}
fsdp_session_type_t
fsdp_get_session_type (const fsdp_description_t * dsc)
{
if (!dsc)
return FSDP_SESSION_TYPE_UNDEFINED;
return dsc->a_type;
}
unsigned int
fsdp_get_media_count (const fsdp_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->media_announcements_count;
}
const fsdp_media_description_t *
fsdp_get_media (const fsdp_description_t * dsc, unsigned int index)
{
if ((index >= dsc->media_announcements_count))
return NULL;
return dsc->media_announcements[index];
}
fsdp_media_t
fsdp_get_media_type (const fsdp_media_description_t * dsc)
{
if (!dsc)
return FSDP_MEDIA_UNDEFINED;
return dsc->media_type;
}
unsigned int
fsdp_get_media_port (const fsdp_media_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->port;
}
unsigned int
fsdp_get_media_port_count (const fsdp_media_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->port_count;
}
fsdp_transport_protocol_t
fsdp_get_media_transport_protocol (const fsdp_media_description_t * dsc)
{
if (!dsc)
return FSDP_TP_UNDEFINED;
return dsc->transport;
}
unsigned int
fsdp_get_media_formats_count (const fsdp_media_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->formats_count;
}
const char *
fsdp_get_media_format (const fsdp_media_description_t * dsc,
unsigned int index)
{
if (!dsc && (index < dsc->formats_count))
return NULL;
return dsc->formats[index];
}
const char *
fsdp_get_media_title (const fsdp_media_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->i_title;
}
fsdp_network_type_t
fsdp_get_media_network_type (const fsdp_media_description_t * dsc)
{
if (!dsc)
return FSDP_NETWORK_TYPE_UNDEFINED;
return dsc->c_network_type;
}
fsdp_address_type_t
fsdp_get_media_address_type (const fsdp_media_description_t * dsc)
{
if (!dsc)
return FSDP_ADDRESS_TYPE_UNDEFINED;
return dsc->c_address_type;
}
const char *
fsdp_get_media_address (const fsdp_media_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->c_address.address;
}
unsigned int
fsdp_get_media_address_ttl (const fsdp_media_description_t * mdsc)
{
if (!mdsc)
return 0;
return mdsc->c_address.address_ttl;
}
unsigned int
fsdp_get_media_address_count (const fsdp_media_description_t * mdsc)
{
if (!mdsc)
return 0;
return mdsc->c_address.address_count;
}
fsdp_bw_modifier_type_t
fsdp_get_media_bw_modifier_type (const fsdp_media_description_t * dsc,
unsigned int index)
{
if (!dsc || (index >= dsc->bw_modifiers_count))
return FSDP_BW_MOD_TYPE_UNDEFINED;
return dsc->bw_modifiers[index].b_mod_type;
}
const char *
fsdp_get_media_bw_modifier_type_unknown (const fsdp_media_description_t * dsc,
unsigned int index)
{
if (!dsc || (index >= dsc->bw_modifiers_count) ||
(FSDP_BW_MOD_TYPE_UNKNOWN != dsc->bw_modifiers[index].b_mod_type))
return NULL;
return dsc->bw_modifiers[index].b_unknown_bw_modt;
}
unsigned long int
fsdp_get_media_bw_value (const fsdp_media_description_t * dsc,
unsigned int index)
{
if (!dsc || (index >= dsc->bw_modifiers_count))
return 0;
return dsc->bw_modifiers[index].b_value;
}
fsdp_encryption_method_t
fsdp_get_media_encryption_method (const fsdp_media_description_t * dsc)
{
if (!dsc)
return FSDP_ENCRYPTION_METHOD_UNDEFINED;
return dsc->k_encryption_method;
}
const char *
fsdp_get_media_encryption_content (const fsdp_media_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->k_encryption_content;
}
unsigned int
fsdp_get_media_ptime (const fsdp_media_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->a_ptime;
}
unsigned int
fsdp_get_media_maxptime (const fsdp_media_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->a_maxptime;
}
unsigned int
fsdp_get_media_rtpmap_count (const fsdp_media_description_t * mdsc)
{
if (!mdsc)
return 0;
return mdsc->a_rtpmaps_count;
}
const char *
fsdp_get_media_rtpmap_payload_type (const fsdp_media_description_t * mdsc,
unsigned int index)
{
if (!mdsc || (index >= mdsc->a_rtpmaps_count))
return NULL;
return mdsc->a_rtpmaps[index]->pt;
}
const char *
fsdp_get_media_rtpmap_encoding_name (const fsdp_media_description_t * mdsc,
unsigned int index)
{
if (!mdsc || (index >= mdsc->a_rtpmaps_count))
return NULL;
return mdsc->a_rtpmaps[index]->encoding_name;
}
unsigned int
fsdp_get_media_rtpmap_clock_rate (const fsdp_media_description_t * mdsc,
unsigned int index)
{
if (!mdsc || (index >= mdsc->a_rtpmaps_count))
return 0;
return mdsc->a_rtpmaps[index]->clock_rate;
}
const char *
fsdp_get_media_rtpmap_encoding_parameters (const fsdp_description_t * mdsc,
unsigned int index)
{
if (!mdsc || (index >= mdsc->a_rtpmaps_count))
return NULL;
return mdsc->a_rtpmaps[index]->parameters;
}
unsigned int
fsdp_get_media_sdplang_count (const fsdp_media_description_t * mdsc)
{
if (!mdsc)
return 0;
return mdsc->a_sdplangs_count;
}
const char *
fsdp_get_media_sdplang (const fsdp_media_description_t * mdsc,
unsigned int index)
{
if (!mdsc || (index >= mdsc->a_sdplangs_count))
return NULL;
return mdsc->a_sdplangs[index];
}
unsigned int
fsdp_get_media_lang_count (const fsdp_media_description_t * mdsc)
{
if (!mdsc)
return 0;
return mdsc->a_langs_count;
}
const char *
fsdp_get_media_lang (const fsdp_media_description_t * mdsc,
unsigned int index)
{
if (!mdsc || (index >= mdsc->a_langs_count))
return NULL;
return mdsc->a_langs[index];
}
unsigned int
fsdp_get_media_control_count (const fsdp_media_description_t * mdsc)
{
if (!mdsc)
return 0;
return mdsc->a_controls_count;
}
char *
fsdp_get_media_control (const fsdp_media_description_t * mdsc,
unsigned int index)
{
if (!mdsc || (index >= mdsc->a_controls_count))
return NULL;
return mdsc->a_controls[index];
}
char *
fsdp_get_media_range (const fsdp_media_description_t * mdsc)
{
return mdsc->a_range;
}
unsigned int
fsdp_get_media_fmtp_count (const fsdp_media_description_t * mdsc)
{
if (!mdsc)
return 0;
return mdsc->a_fmtps_count;
}
const char *
fsdp_get_media_fmtp (const fsdp_media_description_t * mdsc,
unsigned int index)
{
if (!mdsc || (index >= mdsc->a_fmtps_count))
return NULL;
return mdsc->a_fmtps[index];
}
fsdp_orient_t
fsdp_get_media_orient (const fsdp_media_description_t * dsc)
{
if (!dsc)
return FSDP_ORIENT_UNDEFINED;
return dsc->a_orient;
}
fsdp_sendrecv_mode_t
fsdp_get_media_sendrecv (const fsdp_media_description_t * dsc)
{
if (!dsc)
return FSDP_SENDRECV_UNDEFINED;
return dsc->a_sendrecv_mode;
}
float
fsdp_get_media_framerate (const fsdp_media_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->a_framerate;
}
unsigned int
fsdp_get_media_quality (const fsdp_media_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->a_quality;
}
unsigned int
fsdp_get_media_rtcp_port (const fsdp_media_description_t * dsc)
{
if (!dsc)
return 0;
return dsc->a_rtcp_port;
}
fsdp_network_type_t
fsdp_get_media_rtcp_network_type (const fsdp_media_description_t * dsc)
{
if (!dsc)
return FSDP_NETWORK_TYPE_UNDEFINED;
return dsc->a_rtcp_network_type;
}
fsdp_address_type_t
fsdp_get_media_rtcp_address_type (const fsdp_media_description_t * dsc)
{
if (!dsc)
return FSDP_ADDRESS_TYPE_UNDEFINED;
return dsc->a_rtcp_address_type;
}
const char *
fsdp_get_media_rtcp_address (const fsdp_media_description_t * dsc)
{
if (!dsc)
return NULL;
return dsc->a_rtcp_address;
}
unsigned int
fsdp_get_media_unidentified_attribute_count (const fsdp_media_description_t
* mdsc)
{
if (!mdsc)
return 0;
return mdsc->unidentified_attributes_count;
}
const char *
fsdp_get_media_unidentified_attribute (const fsdp_media_description_t * mdsc,
unsigned int index)
{
if (!mdsc || (index < mdsc->unidentified_attributes_count))
return NULL;
return mdsc->unidentified_attributes[index];
}
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