示例#1
0
static void apply_packetization(struct ast_sip_session *session, struct ast_sip_session_media *session_media,
			 const struct pjmedia_sdp_media *remote_stream)
{
	pjmedia_sdp_attr *attr;
	pj_str_t value;
	unsigned long framing;
	int codec;
	struct ast_codec_pref *pref = &ast_rtp_instance_get_codecs(session_media->rtp)->pref;

	/* Apply packetization if available and configured to do so */
	if (!session->endpoint->media.rtp.use_ptime || !(attr = pjmedia_sdp_media_find_attr2(remote_stream, "ptime", NULL))) {
		return;
	}

	value = attr->value;
	framing = pj_strtoul(pj_strltrim(&value));

	for (codec = 0; codec < AST_RTP_MAX_PT; codec++) {
		struct ast_rtp_payload_type format = ast_rtp_codecs_payload_lookup(ast_rtp_instance_get_codecs(
											   session_media->rtp), codec);

		if (!format.asterisk_format) {
			continue;
		}

		ast_codec_pref_setsize(pref, &format.format, framing);
	}

	ast_rtp_codecs_packetization_set(ast_rtp_instance_get_codecs(session_media->rtp),
					 session_media->rtp, pref);
}
示例#2
0
PJ_DEF(pj_status_t) pj_strtol2(const pj_str_t *str, long *value)
{
    pj_str_t s;
    unsigned long retval = 0;
    pj_bool_t is_negative = PJ_FALSE;
    int rc = 0;

    PJ_CHECK_STACK();

    if (!str || !value) {
        return PJ_EINVAL;
    }

    s = *str;
    pj_strltrim(&s);

    if (s.slen == 0)
        return PJ_EINVAL;

    if (s.ptr[0] == '+' || s.ptr[0] == '-') {
        is_negative = (s.ptr[0] == '-');
        s.ptr += 1;
        s.slen -= 1;
    }

    rc = pj_strtoul3(&s, &retval, 10);
    if (rc == PJ_EINVAL) {
        return rc;
    } else if (rc != PJ_SUCCESS) {
        *value = is_negative ? PJ_MINLONG : PJ_MAXLONG;
        return is_negative ? PJ_ETOOSMALL : PJ_ETOOBIG;
    }

    if (retval > PJ_MAXLONG && !is_negative) {
        *value = PJ_MAXLONG;
        return PJ_ETOOBIG;
    }

    if (retval > (PJ_MAXLONG + 1UL) && is_negative) {
        *value = PJ_MINLONG;
        return PJ_ETOOSMALL;
    }

    *value = is_negative ? -(long)retval : retval;

    return PJ_SUCCESS;
}
示例#3
0
static void get_codecs(struct ast_sip_session *session, const struct pjmedia_sdp_media *stream, struct ast_rtp_codecs *codecs,
       struct ast_sip_session_media *session_media)
{
	pjmedia_sdp_attr *attr;
	pjmedia_sdp_rtpmap *rtpmap;
	pjmedia_sdp_fmtp fmtp;
	struct ast_format *format;
	int i, num = 0, tel_event = 0;
	char name[256];
	char media[20];
	char fmt_param[256];
	enum ast_rtp_options options = session->endpoint->media.g726_non_standard ?
		AST_RTP_OPT_G726_NONSTANDARD : 0;

	ast_rtp_codecs_payloads_initialize(codecs);

	/* Iterate through provided formats */
	for (i = 0; i < stream->desc.fmt_count; ++i) {
		/* The payload is kept as a string for things like t38 but for video it is always numerical */
		ast_rtp_codecs_payloads_set_m_type(codecs, NULL, pj_strtoul(&stream->desc.fmt[i]));
		/* Look for the optional rtpmap attribute */
		if (!(attr = pjmedia_sdp_media_find_attr2(stream, "rtpmap", &stream->desc.fmt[i]))) {
			continue;
		}

		/* Interpret the attribute as an rtpmap */
		if ((pjmedia_sdp_attr_to_rtpmap(session->inv_session->pool_prov, attr, &rtpmap)) != PJ_SUCCESS) {
			continue;
		}

		ast_copy_pj_str(name, &rtpmap->enc_name, sizeof(name));
                if (strcmp(name,"telephone-event") == 0) {
                        tel_event++;
                }

		ast_copy_pj_str(media, (pj_str_t*)&stream->desc.media, sizeof(media));
		ast_rtp_codecs_payloads_set_rtpmap_type_rate(codecs, NULL, pj_strtoul(&stream->desc.fmt[i]),
							     media, name, options, rtpmap->clock_rate);
		/* Look for an optional associated fmtp attribute */
		if (!(attr = pjmedia_sdp_media_find_attr2(stream, "fmtp", &rtpmap->pt))) {
			continue;
		}

		if ((pjmedia_sdp_attr_get_fmtp(attr, &fmtp)) == PJ_SUCCESS) {
			ast_copy_pj_str(fmt_param, &fmtp.fmt, sizeof(fmt_param));
			if (sscanf(fmt_param, "%30d", &num) != 1) {
				continue;
			}

			if ((format = ast_rtp_codecs_get_payload_format(codecs, num))) {
				struct ast_format *format_parsed;

				ast_copy_pj_str(fmt_param, &fmtp.fmt_param, sizeof(fmt_param));

				format_parsed = ast_format_parse_sdp_fmtp(format, fmt_param);
				if (format_parsed) {
					ast_rtp_codecs_payload_replace_format(codecs, num, format_parsed);
					ao2_ref(format_parsed, -1);
				}

				ao2_ref(format, -1);
			}
		}
	}
	if ((tel_event==0) && (session->endpoint->dtmf == AST_SIP_DTMF_AUTO)) {
                ast_rtp_instance_dtmf_mode_set(session_media->rtp, AST_RTP_DTMF_MODE_INBAND);
	}
	/* Get the packetization, if it exists */
	if ((attr = pjmedia_sdp_media_find_attr2(stream, "ptime", NULL))) {
		unsigned long framing = pj_strtoul(pj_strltrim(&attr->value));
		if (framing && session->endpoint->media.rtp.use_ptime) {
			ast_rtp_codecs_set_framing(codecs, framing);
		}
	}
}
示例#4
0
/*
 * Create stream info from SDP media line.
 */
PJ_DEF(pj_status_t) pjmedia_stream_info_from_sdp(
					   pjmedia_stream_info *si,
					   pj_pool_t *pool,
					   pjmedia_endpt *endpt,
					   const pjmedia_sdp_session *local,
					   const pjmedia_sdp_session *remote,
					   unsigned stream_idx)
{
    pjmedia_codec_mgr *mgr;
    const pjmedia_sdp_attr *attr;
    const pjmedia_sdp_media *local_m;
    const pjmedia_sdp_media *rem_m;
    const pjmedia_sdp_conn *local_conn;
    const pjmedia_sdp_conn *rem_conn;
    int rem_af, local_af;
    pj_sockaddr local_addr;
    pjmedia_sdp_rtpmap *rtpmap;
    unsigned i, pt, fmti;
    pj_status_t status;

    
    /* Validate arguments: */
    PJ_ASSERT_RETURN(pool && si && local && remote, PJ_EINVAL);
    PJ_ASSERT_RETURN(stream_idx < local->media_count, PJ_EINVAL);
    PJ_ASSERT_RETURN(stream_idx < remote->media_count, PJ_EINVAL);


    /* Get codec manager. */
    mgr = pjmedia_endpt_get_codec_mgr(endpt);

    /* Keep SDP shortcuts */
    local_m = local->media[stream_idx];
    rem_m = remote->media[stream_idx];

    local_conn = local_m->conn ? local_m->conn : local->conn;
    if (local_conn == NULL)
	return PJMEDIA_SDP_EMISSINGCONN;

    rem_conn = rem_m->conn ? rem_m->conn : remote->conn;
    if (rem_conn == NULL)
	return PJMEDIA_SDP_EMISSINGCONN;


    /* Reset: */

    pj_bzero(si, sizeof(*si));

#if PJMEDIA_HAS_RTCP_XR && PJMEDIA_STREAM_ENABLE_XR
    /* Set default RTCP XR enabled/disabled */
    si->rtcp_xr_enabled = PJ_TRUE;
#endif

    /* Media type: */

    if (pj_stricmp(&local_m->desc.media, &ID_AUDIO) == 0) {

	si->type = PJMEDIA_TYPE_AUDIO;

    } else if (pj_stricmp(&local_m->desc.media, &ID_VIDEO) == 0) {

	si->type = PJMEDIA_TYPE_VIDEO;

    } else {

	si->type = PJMEDIA_TYPE_UNKNOWN;

	/* Avoid rejecting call because of unrecognized media, 
	 * just return PJ_SUCCESS, this media will be deactivated later.
	 */
	//return PJMEDIA_EINVALIMEDIATYPE;
	return PJ_SUCCESS;

    }

    /* Transport protocol */

    /* At this point, transport type must be compatible, 
     * the transport instance will do more validation later.
     */
    status = pjmedia_sdp_transport_cmp(&rem_m->desc.transport, 
				       &local_m->desc.transport);
    if (status != PJ_SUCCESS)
	return PJMEDIA_SDPNEG_EINVANSTP;

    if (pj_stricmp(&local_m->desc.transport, &ID_RTP_AVP) == 0) {

	si->proto = PJMEDIA_TP_PROTO_RTP_AVP;

    } else if (pj_stricmp(&local_m->desc.transport, &ID_RTP_SAVP) == 0) {

	si->proto = PJMEDIA_TP_PROTO_RTP_SAVP;

    } else {

	si->proto = PJMEDIA_TP_PROTO_UNKNOWN;
	return PJ_SUCCESS;
    }


    /* Check address family in remote SDP */
    rem_af = pj_AF_UNSPEC();
    if (pj_stricmp(&rem_conn->net_type, &ID_IN)==0) {
	if (pj_stricmp(&rem_conn->addr_type, &ID_IP4)==0) {
	    rem_af = pj_AF_INET();
	} else if (pj_stricmp(&rem_conn->addr_type, &ID_IP6)==0) {
	    rem_af = pj_AF_INET6();
	}
    }

    if (rem_af==pj_AF_UNSPEC()) {
	/* Unsupported address family */
	return PJ_EAFNOTSUP;
    }

    /* Set remote address: */
    status = pj_sockaddr_init(rem_af, &si->rem_addr, &rem_conn->addr, 
			      rem_m->desc.port);
    if (status != PJ_SUCCESS) {
	/* Invalid IP address. */
	return PJMEDIA_EINVALIDIP;
    }

    /* Check address family of local info */
    local_af = pj_AF_UNSPEC();
    if (pj_stricmp(&local_conn->net_type, &ID_IN)==0) {
	if (pj_stricmp(&local_conn->addr_type, &ID_IP4)==0) {
	    local_af = pj_AF_INET();
	} else if (pj_stricmp(&local_conn->addr_type, &ID_IP6)==0) {
	    local_af = pj_AF_INET6();
	}
    }

    if (local_af==pj_AF_UNSPEC()) {
	/* Unsupported address family */
	return PJ_SUCCESS;
    }

    /* Set remote address: */
    status = pj_sockaddr_init(local_af, &local_addr, &local_conn->addr, 
			      local_m->desc.port);
    if (status != PJ_SUCCESS) {
	/* Invalid IP address. */
	return PJMEDIA_EINVALIDIP;
    }

    /* Local and remote address family must match */
    if (local_af != rem_af)
	return PJ_EAFNOTSUP;

    /* Media direction: */

    if (local_m->desc.port == 0 || 
	pj_sockaddr_has_addr(&local_addr)==PJ_FALSE ||
	pj_sockaddr_has_addr(&si->rem_addr)==PJ_FALSE ||
	pjmedia_sdp_media_find_attr(local_m, &STR_INACTIVE, NULL)!=NULL)
    {
	/* Inactive stream. */

	si->dir = PJMEDIA_DIR_NONE;

    } else if (pjmedia_sdp_media_find_attr(local_m, &STR_SENDONLY, NULL)!=NULL) {

	/* Send only stream. */

	si->dir = PJMEDIA_DIR_ENCODING;

    } else if (pjmedia_sdp_media_find_attr(local_m, &STR_RECVONLY, NULL)!=NULL) {

	/* Recv only stream. */

	si->dir = PJMEDIA_DIR_DECODING;

    } else {

	/* Send and receive stream. */

	si->dir = PJMEDIA_DIR_ENCODING_DECODING;

    }

    /* No need to do anything else if stream is rejected */
    if (local_m->desc.port == 0) {
	return PJ_SUCCESS;
    }

    /* If "rtcp" attribute is present in the SDP, set the RTCP address
     * from that attribute. Otherwise, calculate from RTP address.
     */
    attr = pjmedia_sdp_attr_find2(rem_m->attr_count, rem_m->attr,
				  "rtcp", NULL);
    if (attr) {
	pjmedia_sdp_rtcp_attr rtcp;
	status = pjmedia_sdp_attr_get_rtcp(attr, &rtcp);
	if (status == PJ_SUCCESS) {
	    if (rtcp.addr.slen) {
		status = pj_sockaddr_init(rem_af, &si->rem_rtcp, &rtcp.addr,
					  (pj_uint16_t)rtcp.port);
	    } else {
		pj_sockaddr_init(rem_af, &si->rem_rtcp, NULL, 
				 (pj_uint16_t)rtcp.port);
		pj_memcpy(pj_sockaddr_get_addr(&si->rem_rtcp),
		          pj_sockaddr_get_addr(&si->rem_addr),
			  pj_sockaddr_get_addr_len(&si->rem_addr));
	    }
	}
    }
    
    if (!pj_sockaddr_has_addr(&si->rem_rtcp)) {
	int rtcp_port;

	pj_memcpy(&si->rem_rtcp, &si->rem_addr, sizeof(pj_sockaddr));
	rtcp_port = pj_sockaddr_get_port(&si->rem_addr) + 1;
	pj_sockaddr_set_port(&si->rem_rtcp, (pj_uint16_t)rtcp_port);
    }


    /* Get the payload number for receive channel. */
    /*
       Previously we used to rely on fmt[0] being the selected codec,
       but some UA sends telephone-event as fmt[0] and this would
       cause assert failure below.

       Thanks Chris Hamilton <chamilton .at. cs.dal.ca> for this patch.

    // And codec must be numeric!
    if (!pj_isdigit(*local_m->desc.fmt[0].ptr) || 
	!pj_isdigit(*rem_m->desc.fmt[0].ptr))
    {
	return PJMEDIA_EINVALIDPT;
    }

    pt = pj_strtoul(&local_m->desc.fmt[0]);
    pj_assert(PJMEDIA_RTP_PT_TELEPHONE_EVENTS==0 ||
	      pt != PJMEDIA_RTP_PT_TELEPHONE_EVENTS);
    */

    /* This is to suppress MSVC warning about uninitialized var */
    pt = 0;

    /* Find the first codec which is not telephone-event */
    for ( fmti = 0; fmti < local_m->desc.fmt_count; ++fmti ) {
	if ( !pj_isdigit(*local_m->desc.fmt[fmti].ptr) )
	    return PJMEDIA_EINVALIDPT;
	pt = pj_strtoul(&local_m->desc.fmt[fmti]);
	if ( PJMEDIA_RTP_PT_TELEPHONE_EVENTS == 0 ||
		pt != PJMEDIA_RTP_PT_TELEPHONE_EVENTS )
		break;
    }
    if ( fmti >= local_m->desc.fmt_count )
	return PJMEDIA_EINVALIDPT;

    /* Get codec info.
     * For static payload types, get the info from codec manager.
     * For dynamic payload types, MUST get the rtpmap.
     */
    if (pt < 96) {
	pj_bool_t has_rtpmap;

	rtpmap = NULL;
	has_rtpmap = PJ_TRUE;

	attr = pjmedia_sdp_media_find_attr(local_m, &ID_RTPMAP, 
					   &local_m->desc.fmt[fmti]);
	if (attr == NULL) {
	    has_rtpmap = PJ_FALSE;
	}
	if (attr != NULL) {
	    status = pjmedia_sdp_attr_to_rtpmap(pool, attr, &rtpmap);
	    if (status != PJ_SUCCESS)
		has_rtpmap = PJ_FALSE;
	}

	/* Build codec format info: */
	if (has_rtpmap) {
	    si->fmt.type = si->type;
	    si->fmt.pt = pj_strtoul(&local_m->desc.fmt[fmti]);
	    pj_strdup(pool, &si->fmt.encoding_name, &rtpmap->enc_name);
	    si->fmt.clock_rate = rtpmap->clock_rate;
	    
#if defined(PJMEDIA_HANDLE_G722_MPEG_BUG) && (PJMEDIA_HANDLE_G722_MPEG_BUG != 0)
	    /* The session info should have the actual clock rate, because 
	     * this info is used for calculationg buffer size, etc in stream 
	     */
	    if (si->fmt.pt == PJMEDIA_RTP_PT_G722)
		si->fmt.clock_rate = 16000;
#endif

	    /* For audio codecs, rtpmap parameters denotes the number of
	     * channels.
	     */
	    if (si->type == PJMEDIA_TYPE_AUDIO && rtpmap->param.slen) {
		si->fmt.channel_cnt = (unsigned) pj_strtoul(&rtpmap->param);
	    } else {
		si->fmt.channel_cnt = 1;
	    }

	} else {	    
	    const pjmedia_codec_info *p_info;

	    status = pjmedia_codec_mgr_get_codec_info( mgr, pt, &p_info);
	    if (status != PJ_SUCCESS)
		return status;

	    pj_memcpy(&si->fmt, p_info, sizeof(pjmedia_codec_info));
	}

	/* For static payload type, pt's are symetric */
	si->tx_pt = pt;

    } else {

	attr = pjmedia_sdp_media_find_attr(local_m, &ID_RTPMAP, 
					   &local_m->desc.fmt[fmti]);
	if (attr == NULL)
	    return PJMEDIA_EMISSINGRTPMAP;

	status = pjmedia_sdp_attr_to_rtpmap(pool, attr, &rtpmap);
	if (status != PJ_SUCCESS)
	    return status;

	/* Build codec format info: */

	si->fmt.type = si->type;
	si->fmt.pt = pj_strtoul(&local_m->desc.fmt[fmti]);
	pj_strdup(pool, &si->fmt.encoding_name, &rtpmap->enc_name);
	si->fmt.clock_rate = rtpmap->clock_rate;

	/* For audio codecs, rtpmap parameters denotes the number of
	 * channels.
	 */
	if (si->type == PJMEDIA_TYPE_AUDIO && rtpmap->param.slen) {
	    si->fmt.channel_cnt = (unsigned) pj_strtoul(&rtpmap->param);
	} else {
	    si->fmt.channel_cnt = 1;
	}

	/* Determine payload type for outgoing channel, by finding
	 * dynamic payload type in remote SDP that matches the answer.
	 */
	si->tx_pt = 0xFFFF;
	for (i=0; i<rem_m->desc.fmt_count; ++i) {
	    unsigned rpt;
	    pjmedia_sdp_attr *r_attr;
	    pjmedia_sdp_rtpmap r_rtpmap;

	    rpt = pj_strtoul(&rem_m->desc.fmt[i]);
	    if (rpt < 96)
		continue;

	    r_attr = pjmedia_sdp_media_find_attr(rem_m, &ID_RTPMAP,
						 &rem_m->desc.fmt[i]);
	    if (!r_attr)
		continue;

	    if (pjmedia_sdp_attr_get_rtpmap(r_attr, &r_rtpmap) != PJ_SUCCESS)
		continue;

	    if (!pj_stricmp(&rtpmap->enc_name, &r_rtpmap.enc_name) &&
		rtpmap->clock_rate == r_rtpmap.clock_rate)
	    {
		/* Found matched codec. */
		si->tx_pt = rpt;

		break;
	    }
	}

	if (si->tx_pt == 0xFFFF)
	    return PJMEDIA_EMISSINGRTPMAP;
    }

  
    /* Now that we have codec info, get the codec param. */
    si->param = PJ_POOL_ALLOC_T(pool, pjmedia_codec_param);
    status = pjmedia_codec_mgr_get_default_param(mgr, &si->fmt, si->param);

    /* Get remote fmtp for our encoder. */
    parse_fmtp(pool, rem_m, si->tx_pt, &si->param->setting.enc_fmtp);

    /* Get local fmtp for our decoder. */
    parse_fmtp(pool, local_m, si->fmt.pt, &si->param->setting.dec_fmtp);

    /* Get remote maxptime for our encoder. */
    attr = pjmedia_sdp_attr_find2(rem_m->attr_count, rem_m->attr,
				  "maxptime", NULL);
    if (attr) {
	pj_str_t tmp_val = attr->value;

	pj_strltrim(&tmp_val);
	si->tx_maxptime = pj_strtoul(&tmp_val);
    }

    /* When direction is NONE (it means SDP negotiation has failed) we don't
     * need to return a failure here, as returning failure will cause
     * the whole SDP to be rejected. See ticket #:
     *	http://
     *
     * Thanks Alain Totouom 
     */
    if (status != PJ_SUCCESS && si->dir != PJMEDIA_DIR_NONE)
	return status;


    /* Get incomming payload type for telephone-events */
    si->rx_event_pt = -1;
    for (i=0; i<local_m->attr_count; ++i) {
	pjmedia_sdp_rtpmap r;

	attr = local_m->attr[i];
	if (pj_strcmp(&attr->name, &ID_RTPMAP) != 0)
	    continue;
	if (pjmedia_sdp_attr_get_rtpmap(attr, &r) != PJ_SUCCESS)
	    continue;
	if (pj_strcmp(&r.enc_name, &ID_TELEPHONE_EVENT) == 0) {
	    si->rx_event_pt = pj_strtoul(&r.pt);
	    break;
	}
    }

    /* Get outgoing payload type for telephone-events */
    si->tx_event_pt = -1;
    for (i=0; i<rem_m->attr_count; ++i) {
	pjmedia_sdp_rtpmap r;

	attr = rem_m->attr[i];
	if (pj_strcmp(&attr->name, &ID_RTPMAP) != 0)
	    continue;
	if (pjmedia_sdp_attr_get_rtpmap(attr, &r) != PJ_SUCCESS)
	    continue;
	if (pj_strcmp(&r.enc_name, &ID_TELEPHONE_EVENT) == 0) {
	    si->tx_event_pt = pj_strtoul(&r.pt);
	    break;
	}
    }

    /* Leave SSRC to random. */
    si->ssrc = pj_rand();

    /* Set default jitter buffer parameter. */
    si->jb_init = si->jb_max = si->jb_min_pre = si->jb_max_pre = -1;

    return PJ_SUCCESS;
}
示例#5
0
/*
 * Internal function for collecting codec info and param from the SDP media.
 */
static pj_status_t get_audio_codec_info_param(pjmedia_stream_info *si,
					      pj_pool_t *pool,
					      pjmedia_codec_mgr *mgr,
					      const pjmedia_sdp_media *local_m,
					      const pjmedia_sdp_media *rem_m)
{
    const pjmedia_sdp_attr *attr;
    pjmedia_sdp_rtpmap *rtpmap;
    unsigned i, fmti, pt = 0;
    pj_status_t status;

    /* Find the first codec which is not telephone-event */
    for ( fmti = 0; fmti < local_m->desc.fmt_count; ++fmti ) {
	pjmedia_sdp_rtpmap r;

	if ( !pj_isdigit(*local_m->desc.fmt[fmti].ptr) )
	    return PJMEDIA_EINVALIDPT;
	pt = pj_strtoul(&local_m->desc.fmt[fmti]);

	if (pt < 96) {
	    /* This is known static PT. Skip rtpmap checking because it is
	     * optional. */
	    break;
	}

	attr = pjmedia_sdp_media_find_attr(local_m, &ID_RTPMAP,
					   &local_m->desc.fmt[fmti]);
	if (attr == NULL)
	    continue;

	status = pjmedia_sdp_attr_get_rtpmap(attr, &r);
	if (status != PJ_SUCCESS)
	    continue;

	if (pj_strcmp(&r.enc_name, &ID_TELEPHONE_EVENT) != 0)
	    break;
    }
    if ( fmti >= local_m->desc.fmt_count )
	return PJMEDIA_EINVALIDPT;

    /* Get payload type for receiving direction */
    si->rx_pt = pt;

    /* Get codec info.
     * For static payload types, get the info from codec manager.
     * For dynamic payload types, MUST get the rtpmap.
     */
    if (pt < 96) {
	pj_bool_t has_rtpmap;

	rtpmap = NULL;
	has_rtpmap = PJ_TRUE;

	attr = pjmedia_sdp_media_find_attr(local_m, &ID_RTPMAP,
					   &local_m->desc.fmt[fmti]);
	if (attr == NULL) {
	    has_rtpmap = PJ_FALSE;
	}
	if (attr != NULL) {
	    status = pjmedia_sdp_attr_to_rtpmap(pool, attr, &rtpmap);
	    if (status != PJ_SUCCESS)
		has_rtpmap = PJ_FALSE;
	}

	/* Build codec format info: */
	if (has_rtpmap) {
	    si->fmt.type = si->type;
	    si->fmt.pt = pj_strtoul(&local_m->desc.fmt[fmti]);
	    pj_strdup(pool, &si->fmt.encoding_name, &rtpmap->enc_name);
	    si->fmt.clock_rate = rtpmap->clock_rate;

#if defined(PJMEDIA_HANDLE_G722_MPEG_BUG) && (PJMEDIA_HANDLE_G722_MPEG_BUG != 0)
	    /* The session info should have the actual clock rate, because
	     * this info is used for calculationg buffer size, etc in stream
	     */
	    if (si->fmt.pt == PJMEDIA_RTP_PT_G722)
		si->fmt.clock_rate = 16000;
#endif

	    /* For audio codecs, rtpmap parameters denotes the number of
	     * channels.
	     */
	    if (si->type == PJMEDIA_TYPE_AUDIO && rtpmap->param.slen) {
		si->fmt.channel_cnt = (unsigned) pj_strtoul(&rtpmap->param);
	    } else {
		si->fmt.channel_cnt = 1;
	    }

	} else {
	    const pjmedia_codec_info *p_info;

	    status = pjmedia_codec_mgr_get_codec_info( mgr, pt, &p_info);
	    if (status != PJ_SUCCESS)
		return status;

	    pj_memcpy(&si->fmt, p_info, sizeof(pjmedia_codec_info));
	}

	/* For static payload type, pt's are symetric */
	si->tx_pt = pt;

    } else {
	pjmedia_codec_id codec_id;
	pj_str_t codec_id_st;
	const pjmedia_codec_info *p_info;

	attr = pjmedia_sdp_media_find_attr(local_m, &ID_RTPMAP,
					   &local_m->desc.fmt[fmti]);
	if (attr == NULL)
	    return PJMEDIA_EMISSINGRTPMAP;

	status = pjmedia_sdp_attr_to_rtpmap(pool, attr, &rtpmap);
	if (status != PJ_SUCCESS)
	    return status;

	/* Build codec format info: */

	si->fmt.type = si->type;
	si->fmt.pt = pj_strtoul(&local_m->desc.fmt[fmti]);
	si->fmt.encoding_name = rtpmap->enc_name;
	si->fmt.clock_rate = rtpmap->clock_rate;

	/* For audio codecs, rtpmap parameters denotes the number of
	 * channels.
	 */
	if (si->type == PJMEDIA_TYPE_AUDIO && rtpmap->param.slen) {
	    si->fmt.channel_cnt = (unsigned) pj_strtoul(&rtpmap->param);
	} else {
	    si->fmt.channel_cnt = 1;
	}

	/* Normalize the codec info from codec manager. Note that the
	 * payload type will be resetted to its default (it might have
	 * been rewritten by the SDP negotiator to match to the remote
	 * offer), this is intentional as currently some components may
	 * prefer (or even require) the default PT in codec info.
	 */
	pjmedia_codec_info_to_id(&si->fmt, codec_id, sizeof(codec_id));

	i = 1;
	codec_id_st = pj_str(codec_id);
	status = pjmedia_codec_mgr_find_codecs_by_id(mgr, &codec_id_st,
						     &i, &p_info, NULL);
	if (status != PJ_SUCCESS)
	    return status;

	pj_memcpy(&si->fmt, p_info, sizeof(pjmedia_codec_info));

	/* Determine payload type for outgoing channel, by finding
	 * dynamic payload type in remote SDP that matches the answer.
	 */
	si->tx_pt = 0xFFFF;
	for (i=0; i<rem_m->desc.fmt_count; ++i) {
	    if (pjmedia_sdp_neg_fmt_match(pool,
					  (pjmedia_sdp_media*)local_m, fmti,
					  (pjmedia_sdp_media*)rem_m, i, 0) ==
		PJ_SUCCESS)
	    {
		/* Found matched codec. */
		si->tx_pt = pj_strtoul(&rem_m->desc.fmt[i]);
		break;
	    }
	}

	if (si->tx_pt == 0xFFFF)
	    return PJMEDIA_EMISSINGRTPMAP;
    }


    /* Now that we have codec info, get the codec param. */
    si->param = PJ_POOL_ALLOC_T(pool, pjmedia_codec_param);
    status = pjmedia_codec_mgr_get_default_param(mgr, &si->fmt,
					         si->param);

    /* Get remote fmtp for our encoder. */
    pjmedia_stream_info_parse_fmtp(pool, rem_m, si->tx_pt,
				   &si->param->setting.enc_fmtp);

    /* Get local fmtp for our decoder. */
    pjmedia_stream_info_parse_fmtp(pool, local_m, si->rx_pt,
				   &si->param->setting.dec_fmtp);

    if (!pj_stricmp2(&si->fmt.encoding_name, "opus")) {
	get_opus_channels_and_clock_rate(&si->param->setting.enc_fmtp,
					 &si->param->setting.dec_fmtp,
					 &si->fmt.channel_cnt,
					 &si->fmt.clock_rate);
    }


    /* Get the remote ptime for our encoder. */
    attr = pjmedia_sdp_attr_find2(rem_m->attr_count, rem_m->attr,
				  "ptime", NULL);
    if (attr) {
	pj_str_t tmp_val = attr->value;
	unsigned frm_per_pkt;

	pj_strltrim(&tmp_val);

	/* Round up ptime when the specified is not multiple of frm_ptime */
	frm_per_pkt = (pj_strtoul(&tmp_val) +
		      si->param->info.frm_ptime/2) /
		      si->param->info.frm_ptime;
	if (frm_per_pkt != 0) {
            si->param->setting.frm_per_pkt = (pj_uint8_t)frm_per_pkt;
        }
    }

    /* Get remote maxptime for our encoder. */
    attr = pjmedia_sdp_attr_find2(rem_m->attr_count, rem_m->attr,
				  "maxptime", NULL);
    if (attr) {
	pj_str_t tmp_val = attr->value;

	pj_strltrim(&tmp_val);
	si->tx_maxptime = pj_strtoul(&tmp_val);
    }

    /* When direction is NONE (it means SDP negotiation has failed) we don't
     * need to return a failure here, as returning failure will cause
     * the whole SDP to be rejected. See ticket #:
     *	http://
     *
     * Thanks Alain Totouom
     */
    if (status != PJ_SUCCESS && si->dir != PJMEDIA_DIR_NONE)
	return status;


    /* Get incomming payload type for telephone-events */
    si->rx_event_pt = -1;
    for (i=0; i<local_m->attr_count; ++i) {
	pjmedia_sdp_rtpmap r;

	attr = local_m->attr[i];
	if (pj_strcmp(&attr->name, &ID_RTPMAP) != 0)
	    continue;
	if (pjmedia_sdp_attr_get_rtpmap(attr, &r) != PJ_SUCCESS)
	    continue;
	if (pj_strcmp(&r.enc_name, &ID_TELEPHONE_EVENT) == 0) {
	    si->rx_event_pt = pj_strtoul(&r.pt);
	    break;
	}
    }

    /* Get outgoing payload type for telephone-events */
    si->tx_event_pt = -1;
    for (i=0; i<rem_m->attr_count; ++i) {
	pjmedia_sdp_rtpmap r;

	attr = rem_m->attr[i];
	if (pj_strcmp(&attr->name, &ID_RTPMAP) != 0)
	    continue;
	if (pjmedia_sdp_attr_get_rtpmap(attr, &r) != PJ_SUCCESS)
	    continue;
	if (pj_strcmp(&r.enc_name, &ID_TELEPHONE_EVENT) == 0) {
	    si->tx_event_pt = pj_strtoul(&r.pt);
	    break;
	}
    }

    return PJ_SUCCESS;
}
示例#6
0
/**
 * This method is to parse and add the command attribute to command structure.
 **/
static pj_status_t add_cmd_node(pj_cli_t *cli,				  
				pj_cli_cmd_spec *group,					 
				pj_xml_node *xml_node,
				pj_cli_cmd_handler handler,
				pj_cli_cmd_spec **p_cmd,
				pj_cli_get_dyn_choice get_choice)
{
    pj_xml_node *root = xml_node;
    pj_xml_attr *attr;
    pj_xml_node *sub_node;
    pj_cli_cmd_spec *cmd;
    pj_cli_arg_spec args[PJ_CLI_MAX_ARGS];
    pj_str_t sc[PJ_CLI_MAX_SHORTCUTS];
    pj_status_t status = PJ_SUCCESS;

    if (pj_stricmp2(&root->name, "CMD"))
        return PJ_EINVAL;

    /* Initialize the command spec */
    cmd = PJ_POOL_ZALLOC_T(cli->pool, struct pj_cli_cmd_spec);
    
    /* Get the command attributes */
    attr = root->attr_head.next;
    while (attr != &root->attr_head) {
        if (!pj_stricmp2(&attr->name, "name")) {
            pj_strltrim(&attr->value);
            if (!attr->value.slen || 
		cmd_name_exists(cli, group, &attr->value))                
            {
                return PJ_CLI_EBADNAME;
            }
            pj_strdup(cli->pool, &cmd->name, &attr->value);
        } else if (!pj_stricmp2(&attr->name, "id")) {	    
	    pj_bool_t is_valid = PJ_FALSE;
            if (attr->value.slen) {		
		pj_cli_cmd_id cmd_id = pj_strtol(&attr->value);
		if (!pj_hash_get(cli->cmd_id_hash, &cmd_id, 
		                 sizeof(pj_cli_cmd_id), NULL))
		    is_valid = PJ_TRUE;
	    } 
	    if (!is_valid)
		return PJ_CLI_EBADID;
            cmd->id = (pj_cli_cmd_id)pj_strtol(&attr->value);
        } else if (!pj_stricmp2(&attr->name, "sc")) {
            pj_scanner scanner;
            pj_str_t str;

            PJ_USE_EXCEPTION;

            pj_scan_init(&scanner, attr->value.ptr, attr->value.slen,
                         PJ_SCAN_AUTOSKIP_WS, &on_syntax_error);

            PJ_TRY {
                while (!pj_scan_is_eof(&scanner)) {
                    pj_scan_get_until_ch(&scanner, ',', &str);
                    pj_strrtrim(&str);
                    if (!pj_scan_is_eof(&scanner))
                        pj_scan_advance_n(&scanner, 1, PJ_TRUE);
                    if (!str.slen)
                        continue;

                    if (cmd->sc_cnt >= PJ_CLI_MAX_SHORTCUTS) {
                        PJ_THROW(PJ_CLI_ETOOMANYARGS);
                    }
                    /* Check whether the shortcuts are already used */
                    if (cmd_name_exists(cli, group, &str)) {
                        PJ_THROW(PJ_CLI_EBADNAME);
                    }

                    pj_strassign(&sc[cmd->sc_cnt++], &str);
                }
            }
            PJ_CATCH_ANY {
                pj_scan_fini(&scanner);
                return (PJ_GET_EXCEPTION());
            }
            PJ_END;
            
        } else if (!pj_stricmp2(&attr->name, "desc")) {
示例#7
0
    //
    // Left trim.
    //
    void ltrim()
    {
	pj_strltrim(this);
    }
static void get_codecs(struct ast_sip_session *session, const struct pjmedia_sdp_media *stream, struct ast_rtp_codecs *codecs)
{
	pjmedia_sdp_attr *attr;
	pjmedia_sdp_rtpmap *rtpmap;
	pjmedia_sdp_fmtp fmtp;
	struct ast_format *format;
	int i, num = 0;
	char name[256];
	char media[20];
	char fmt_param[256];

	ast_rtp_codecs_payloads_initialize(codecs);

	/* Iterate through provided formats */
	for (i = 0; i < stream->desc.fmt_count; ++i) {
		/* The payload is kept as a string for things like t38 but for video it is always numerical */
		ast_rtp_codecs_payloads_set_m_type(codecs, NULL, pj_strtoul(&stream->desc.fmt[i]));
		/* Look for the optional rtpmap attribute */
		if (!(attr = pjmedia_sdp_media_find_attr2(stream, "rtpmap", &stream->desc.fmt[i]))) {
			continue;
		}

		/* Interpret the attribute as an rtpmap */
		if ((pjmedia_sdp_attr_to_rtpmap(session->inv_session->pool_prov, attr, &rtpmap)) != PJ_SUCCESS) {
			continue;
		}

		ast_copy_pj_str(name, &rtpmap->enc_name, sizeof(name));
		ast_copy_pj_str(media, (pj_str_t*)&stream->desc.media, sizeof(media));
		ast_rtp_codecs_payloads_set_rtpmap_type_rate(codecs, NULL, pj_strtoul(&stream->desc.fmt[i]),
							     media, name, 0, rtpmap->clock_rate);
		/* Look for an optional associated fmtp attribute */
		if (!(attr = pjmedia_sdp_media_find_attr2(stream, "fmtp", &rtpmap->pt))) {
			continue;
		}

		if ((pjmedia_sdp_attr_get_fmtp(attr, &fmtp)) == PJ_SUCCESS) {
			sscanf(pj_strbuf(&fmtp.fmt), "%d", &num);
			if ((format = ast_rtp_codecs_get_payload_format(codecs, num))) {
				struct ast_format *format_parsed;

				ast_copy_pj_str(fmt_param, &fmtp.fmt_param, sizeof(fmt_param));

				format_parsed = ast_format_parse_sdp_fmtp(format, fmt_param);
				if (format_parsed) {
					ast_rtp_codecs_payload_replace_format(codecs, num, format_parsed);
					ao2_ref(format_parsed, -1);
				}

				ao2_ref(format, -1);
			}
		}
	}

	/* Get the packetization, if it exists */
	if ((attr = pjmedia_sdp_media_find_attr2(stream, "ptime", NULL))) {
		unsigned long framing = pj_strtoul(pj_strltrim(&attr->value));
		if (framing && session->endpoint->media.rtp.use_ptime) {
			ast_rtp_codecs_set_framing(codecs, framing);
		}
	}
}
示例#9
0
PJ_DEF(pj_status_t) pj_strtoul3(const pj_str_t *str, unsigned long *value,
				unsigned base)
{
    pj_str_t s;
    unsigned i;

    PJ_CHECK_STACK();

    if (!str || !value) {
        return PJ_EINVAL;
    }

    s = *str;
    pj_strltrim(&s);

    if (s.slen == 0 || s.ptr[0] < '0' ||
	(base <= 10 && (unsigned)s.ptr[0] > ('0' - 1) + base) ||
	(base == 16 && !pj_isxdigit(s.ptr[0])))
    {
        return PJ_EINVAL;
    }

    *value = 0;
    if (base <= 10) {
	for (i=0; i<(unsigned)s.slen; ++i) {
	    unsigned c = s.ptr[i] - '0';
	    if (s.ptr[i] < '0' || (unsigned)s.ptr[i] > ('0' - 1) + base) {
		break;
	    }
	    if (*value > PJ_MAXULONG / base) {
		*value = PJ_MAXULONG;
		return PJ_ETOOBIG;
	    }

	    *value *= base;
	    if ((PJ_MAXULONG - *value) < c) {
		*value = PJ_MAXULONG;
		return PJ_ETOOBIG;
	    }
	    *value += c;
	}
    } else if (base == 16) {
	for (i=0; i<(unsigned)s.slen; ++i) {
	    unsigned c = pj_hex_digit_to_val(s.ptr[i]);
	    if (!pj_isxdigit(s.ptr[i]))
		break;

	    if (*value > PJ_MAXULONG / base) {
		*value = PJ_MAXULONG;
		return PJ_ETOOBIG;
	    }
	    *value *= base;
	    if ((PJ_MAXULONG - *value) < c) {
		*value = PJ_MAXULONG;
		return PJ_ETOOBIG;
	    }
	    *value += c;
	}
    } else {
	pj_assert(!"Unsupported base");
	return PJ_EINVAL;
    }
    return PJ_SUCCESS;
}