static mblk_t *rtcp_create_simple_bye_packet(uint32_t ssrc, const char *reason) {
int packet_size;
int strsize = 0;
int strpadding = 0;
mblk_t *mp;
rtcp_bye_t *rtcp;
packet_size = RTCP_BYE_HEADER_SIZE;
if (reason!=NULL) {
strsize=(int)MIN(strlen(reason),RTCP_BYE_REASON_MAX_STRING_SIZE);
if (strsize > 0) {
strpadding = 3 - (strsize % 4);
packet_size += 1 + strsize + strpadding;
}
}
mp = allocb(packet_size, 0);
rtcp = (rtcp_bye_t*)mp->b_rptr;
rtcp_common_header_init(&rtcp->ch,NULL,RTCP_BYE,1,packet_size);
rtcp->ssrc[0] = htonl(ssrc);
mp->b_wptr += RTCP_BYE_HEADER_SIZE;
/* append the reason if any*/
if (reason!=NULL) {
const char pad[] = {0, 0, 0};
unsigned char strsize_octet = (unsigned char)strsize;
appendb(mp, (const char*)&strsize_octet, 1, FALSE);
appendb(mp, reason,strsize, FALSE);
appendb(mp, pad,strpadding, FALSE);
}
return mp;
}
static mblk_t * sdes_chunk_append_item(mblk_t *m, rtcp_sdes_type_t sdes_type, const char *content) {
if ( content )
{
sdes_item_t si;
si.item_type=sdes_type;
si.len=(uint8_t) MIN(strlen(content),RTCP_SDES_MAX_STRING_SIZE);
m=appendb(m,(char*)&si,RTCP_SDES_ITEM_HEADER_SIZE,FALSE);
m=appendb(m,content,si.len,FALSE);
}
return m;
}
mblk_t *rtcp_create_simple_bye_packet(guint32 ssrc, const gchar *reason)
{
gint strsize=0;
gint packet_size;
mblk_t *mp;
rtcp_bye_t *rtcp;
packet_size = RTCP_BYE_HEADER_SIZE + 1 + strsize;
if (reason!=NULL)
strsize=MIN(strlen(reason),RTCP_BYE_REASON_MAX_STRING_SIZE);
mp = allocb(packet_size, 0);
rtcp = (rtcp_bye_t*)mp->b_rptr;
rtcp_common_header_init(&rtcp->ch,NULL,RTCP_BYE,1,packet_size);
rtcp->ssrc[0] = htonl(ssrc);
mp->b_wptr += packet_size;
/* append the reason if any*/
if (reason!=NULL)
appendb(mp,reason,strsize,FALSE);
return mp;
}
void msgappend(mblk_t *mp, const char *data, int size, bool_t pad){
while(mp->b_cont!=NULL) mp=mp->b_cont;
appendb(mp,data,size,pad);
}
static mblk_t * sdes_chunk_pad(mblk_t *m){
return appendb(m,"",1,TRUE);
}
mblk_t * sdes_chunk_pad(mblk_t *m){
return appendb(m,NULL,0,TRUE);
}
