sdp-utils.h

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#ifndef JANUS_SDP_UTILS_H
#define JANUS_SDP_UTILS_H


#include <inttypes.h>
#include <glib.h>

#include "refcount.h"

typedef struct janus_sdp {
        int version;
        char *o_name;
        guint64 o_sessid;
        guint64 o_version;
        gboolean o_ipv4;
        char *o_addr;
        char *s_name;
        guint64 t_start;
        guint64 t_stop;
        gboolean c_ipv4;
        char *c_addr;
        GList *attributes;
        GList *m_lines;
        volatile gint destroyed;
        janus_refcount ref;
} janus_sdp;

typedef enum janus_sdp_mtype {
        JANUS_SDP_AUDIO,
        JANUS_SDP_VIDEO,
        JANUS_SDP_APPLICATION,
        JANUS_SDP_OTHER
} janus_sdp_mtype;
janus_sdp_mtype janus_sdp_parse_mtype(const char *type);
const char *janus_sdp_mtype_str(janus_sdp_mtype type);

typedef enum janus_sdp_mdirection {
        JANUS_SDP_DEFAULT,
        JANUS_SDP_SENDRECV,
        JANUS_SDP_SENDONLY,
        JANUS_SDP_RECVONLY,
        JANUS_SDP_INACTIVE,
        JANUS_SDP_INVALID
} janus_sdp_mdirection;
janus_sdp_mdirection janus_sdp_parse_mdirection(const char *direction);
const char *janus_sdp_mdirection_str(janus_sdp_mdirection direction);

void janus_sdp_find_preferred_codec(janus_sdp *sdp, janus_sdp_mtype type, int index, const char **codec);
void janus_sdp_find_first_codecs(janus_sdp *sdp, janus_sdp_mtype type, int index, const char **codec);
const char *janus_sdp_match_preferred_codec(janus_sdp_mtype type, char *codec);

typedef struct janus_sdp_mline {
        int index;
        janus_sdp_mtype type;
        char *type_str;
        guint16 port;
        char *proto;
        GList *fmts;
        GList *ptypes;
        gboolean c_ipv4;
        char *c_addr;
        char *b_name;
        uint32_t b_value;
        janus_sdp_mdirection direction;
        GList *attributes;
        volatile gint destroyed;
        janus_refcount ref;
} janus_sdp_mline;
janus_sdp_mline *janus_sdp_mline_create(janus_sdp_mtype type, guint16 port, const char *proto, janus_sdp_mdirection direction);
void janus_sdp_mline_destroy(janus_sdp_mline *mline);
janus_sdp_mline *janus_sdp_mline_find(janus_sdp *sdp, janus_sdp_mtype type);
janus_sdp_mline *janus_sdp_mline_find_by_index(janus_sdp *sdp, int index);
int janus_sdp_mline_remove(janus_sdp *sdp, janus_sdp_mtype type);

typedef struct janus_sdp_attribute {
        char *name;
        char *value;
        janus_sdp_mdirection direction;
        volatile gint destroyed;
        janus_refcount ref;
} janus_sdp_attribute;
janus_sdp_attribute *janus_sdp_attribute_create(const char *name, const char *value, ...) G_GNUC_PRINTF(2, 3);
void janus_sdp_attribute_destroy(janus_sdp_attribute *attr);
int janus_sdp_attribute_add_to_mline(janus_sdp_mline *mline, janus_sdp_attribute *attr);

janus_sdp *janus_sdp_parse(const char *sdp, char *error, size_t errlen);

char *janus_sdp_write(janus_sdp *sdp);

janus_sdp *janus_sdp_new(const char *name, const char *address);

void janus_sdp_destroy(janus_sdp *sdp);

typedef enum janus_sdp_oa_type {
        JANUS_SDP_OA_MLINE = 1,
        JANUS_SDP_OA_ENABLED,
        JANUS_SDP_OA_DIRECTION,
        JANUS_SDP_OA_MID,
        JANUS_SDP_OA_CODEC,
        JANUS_SDP_OA_PT,
        JANUS_SDP_OA_FMTP,
        JANUS_SDP_OA_AUDIO_DTMF,
        JANUS_SDP_OA_VIDEO_RTCPFB_DEFAULTS,
        JANUS_SDP_OA_VIDEO_H264_FMTP,
        JANUS_SDP_OA_DATA_LEGACY,
        JANUS_SDP_OA_ACCEPT_EXTMAP,
        JANUS_SDP_OA_DONE = 0
} janus_sdp_oa_type;
const char *janus_sdp_oa_type_str(janus_sdp_oa_type type);

janus_sdp *janus_sdp_generate_offer(const char *name, const char *address, ...);
int janus_sdp_generate_offer_mline(janus_sdp *offer, ...);
janus_sdp *janus_sdp_generate_answer(janus_sdp *offer);
int janus_sdp_generate_answer_mline(janus_sdp *offer, janus_sdp *answer, janus_sdp_mline *offered, ...);

int janus_sdp_get_codec_pt(janus_sdp *sdp, int index, const char *codec);

const char *janus_sdp_get_codec_name(janus_sdp *sdp, int index, int pt);

int janus_sdp_remove_payload_type(janus_sdp *sdp, int index, int pt);

const char *janus_sdp_get_codec_rtpmap(const char *codec);

#endif