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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program 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, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#ifndef __BGAV_SDP_H_
#define __BGAV_SDP_H_
typedef struct bgav_sdp_s bgav_sdp_t;
/* Origin (o=) */
typedef struct
{
char * username; /* NULL if "-" */
uint64_t session_id;
uint64_t session_version;
char * network_type;
char * addr_type;
char * addr;
} bgav_sdp_origin_t;
/* Connection description (c=) */
typedef struct
{
char *type;
char *addr;
uint32_t ttl;
uint32_t num_addr;
} bgav_sdp_connection_desc_t;
/* Bandwidth description (b=) */
typedef enum
{
BGAV_SDP_BANDWIDTH_MODIFIER_NONE = 0,
BGAV_SDP_BANDWIDTH_MODIFIER_CT,
BGAV_SDP_BANDWIDTH_MODIFIER_AS,
BGAV_SDP_BANDWIDTH_MODIFIER_USER,
} bgav_sdp_bandwidth_modifier_t;
typedef struct
{
bgav_sdp_bandwidth_modifier_t modifier;
char * user_bandwidth;
unsigned long bandwidth;
} bgav_sdp_bandwidth_desc_t;
/* Attribute (a=) */
typedef enum
{
BGAV_SDP_TYPE_NONE = 0,
BGAV_SDP_TYPE_BOOLEAN = 1,
BGAV_SDP_TYPE_INT = 2,
BGAV_SDP_TYPE_STRING = 3,
BGAV_SDP_TYPE_DATA = 4,
BGAV_SDP_TYPE_GENERIC = 5, /* Everything else */
} bgav_sdp_attr_type_t;
typedef struct
{
char * name;
bgav_sdp_attr_type_t type;
union
{
char * str;
void * data;
int i;
} val;
int data_len;
} bgav_sdp_attr_t;
/* Key (k=) */
typedef enum
{
BGAV_SDP_KEY_TYPE_NONE = 0,
BGAV_SDP_KEY_TYPE_CLEAR,
BGAV_SDP_KEY_TYPE_BASE64,
BGAV_SDP_KEY_TYPE_URI,
BGAV_SDP_KEY_TYPE_PROMPT,
} bgav_sdp_key_type_t;
typedef struct key_desc_t
{
bgav_sdp_key_type_t type;
char *key;
} bgav_sdp_key_desc_t;
/* Media Description (m=) */
typedef struct
{
/* From the m= line */
char * media; /* audio, video etc */
int port;
int num_ports;
char * protocol;
int num_formats;
char ** formats;
/* Additional stuff */
char * media_title; /* i=* (media title) */
bgav_sdp_connection_desc_t connection; /* c= */
bgav_sdp_bandwidth_desc_t bandwidth; /* b= */
bgav_sdp_key_desc_t key; /* k= */
/* a= */
int num_attributes;
bgav_sdp_attr_t * attributes;
} bgav_sdp_media_desc_t;
/* Whole sdp structure */
struct bgav_sdp_s
{
int protocol_version; /* v= */
bgav_sdp_origin_t origin; /* o= */
char * session_name; /* s= */
char * session_description; /* i= */
char * uri; /* u= */
char * email; /* e= */
char * phone; /* p= */
bgav_sdp_connection_desc_t connection; /* c= */
bgav_sdp_bandwidth_desc_t bandwidth; /* b= */
/* t= One or more time descriptions (see below) */
// z=* (time zone adjustments)
bgav_sdp_key_desc_t key; /* k=* (encryption key) */
// a=* (zero or more session attribute lines)
// Zero or more media descriptions (see below)
// int num_time_descriptions;
// time_desc_t * time_descriptions;
int num_attributes;
bgav_sdp_attr_t * attributes;
int num_media;
bgav_sdp_media_desc_t * media;
};
/* Obtain attributes */
/*
* These functions return FALSE if
* there is a type mismatch, or no attribute with the
* specified name is found
*/
int bgav_sdp_get_attr_string(bgav_sdp_attr_t * attrs, int num_attrs,
const char * name, char ** ret);
int bgav_sdp_get_attr_data(bgav_sdp_attr_t * attrs, int num_attrs,
const char * name, uint8_t ** ret, int * size);
int bgav_sdp_get_attr_int(bgav_sdp_attr_t * attrs, int num_attrs,
const char * name, int*);
int bgav_sdp_get_attr_rtpmap(bgav_sdp_attr_t * attrs, int num_attrs, int format, char ** ret);
int bgav_sdp_get_attr_fmtp(bgav_sdp_attr_t * attrs, int num_attrs, int format, char ** ret);
/* Init, free */
int bgav_sdp_parse(const bgav_options_t * opt,
const char * data, bgav_sdp_t * ret);
void bgav_sdp_free(bgav_sdp_t * s);
/* Dump the entire struct to stderr */
void bgav_sdp_dump(bgav_sdp_t * s);
#endif // __BGAV_SDP_H_
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