static int single_parse(rtp_vorbis * vorb, rtp_pkt * pkt, rtp_frame * fr,
rtp_buff * config, rtp_ssrc * ssrc)
{
uint8_t * this_pkt = RTP_PKT_DATA(pkt) + vorb->offset;
unsigned len = nms_consume_BE2(&this_pkt);
if (vorb->id != RTP_XIPH_ID(pkt) && //not the current id
// !cfg_cache_find(vorb,RTP_XIPH_ID(pkt)) || //XXX
(RTP_XIPH_T(pkt) != 1) //not a config packet
) {
nms_printf(NMSML_ERR, "Id %0x unknown, expected %0x\n",
(unsigned)RTP_XIPH_ID(pkt), (unsigned)vorb->id);
return RTP_PARSE_ERROR;
}
fr->data = vorb->buf = realloc(vorb->buf, len);
fr->len = vorb->len = len;
memcpy(fr->data, this_pkt, fr->len);
vorb->pkts--;
if (vorb->pkts == 0) {
rtp_rm_pkt(ssrc);
}
if (RTP_XIPH_T(pkt) == 1)
return -1; //cfg_fixup(vorb, fr, config, RTP_XIPH_ID(pkt));
else {
config->data = vorb->conf[0].conf;
config->len = vorb->conf[0].len;
}
return 0;
}
static void
rtp_packet_send_eof(RTP_session *session, time_t time_now)
{
gsize packet_size = sizeof(RTP_packet) + 32;
RTP_packet *packet = g_malloc0(packet_size);
Track *tr = session->track;
guint32 timestamp = time_now + 1;
j_rtp_extend_header_t *ext_hdr;
packet->version = 2;
packet->padding = 0;
packet->extension = 1;
packet->csrc_len = 0;
packet->marker = 1;
packet->payload = tr->properties.payload_type & 0x7f;
packet->seq_no = htons(++session->seq_no);
packet->timestamp = htonl(timestamp);
packet->ssrc = htons(session->ssrc);
ext_hdr = (j_rtp_extend_header_t*)(gchar*)RTP_PKT_DATA(packet);
ext_hdr->frame_type = 15;//end frame.
ext_hdr->version = 0x1;
ext_hdr->length = htons(sizeof(j_rtp_extend_info_t)/4);
__rtp_pkt_send(session, &session->transport, packet, packet_size);
g_free(packet);
}
static int h263_parse(rtp_ssrc * ssrc, rtp_frame * fr, rtp_buff * config)
{
rtp_pkt *pkt;
uint8_t *buf;
rtp_h263 *priv = ssrc->rtp_sess->ptdefs[fr->pt]->priv;
size_t len; /* payload size, minus additional headers,
* plus the 2 zeroed bytes
*/
size_t start = 2; /* how many bytes we are going to skip from the start */
int err = RTP_FILL_OK;
int p_bit;
if (!(pkt = rtp_get_pkt(ssrc, &len)))
return RTP_BUFF_EMPTY;
buf = RTP_PKT_DATA(pkt);
len = RTP_PAYLOAD_SIZE(pkt, len);
if (priv->len && (RTP_PKT_TS(pkt) != priv->timestamp)) {
//incomplete packet without final fragment
priv->len = 0;
return RTP_PKT_UNKNOWN;
}
p_bit = buf[0] & 0x4;
if (p_bit) { // p bit - we overwrite the first 2 bytes with zero
start = 0;
}
if (!priv->len && !p_bit) {
//incomplete packet without initial fragment
rtp_rm_pkt(ssrc);
return RTP_PKT_UNKNOWN;
}
if (buf[0]&0x2) // v bit - skip one more
++start;
start += (buf[1]>>3)|((buf[0]&0x1)<<5); // plen - skip that many bytes
len -= start;
if (nms_alloc_data(&priv->data, &priv->data_size, len + priv->len)) {
return RTP_ERRALLOC;
}
nms_append_data(priv->data, priv->len, buf + start, len);
if (p_bit) // p bit - we overwrite the first 2 bytes with zero
memset(priv->data + priv->len, 0, 2);
priv->len += len;
if (!RTP_PKT_MARK(pkt)) {
priv->timestamp = RTP_PKT_TS(pkt);
err = EAGAIN;
} else {
fr->data = priv->data;
fr->len = priv->len;
priv->len = 0;
}
memset(config, 0, sizeof(rtp_buff));
rtp_rm_pkt(ssrc);
return err;
}
