C++ rtp_profile_get_payload函数代码示例

MSFilter *set_CODECFilter(RtpProfile *profile, int pt, int mode){
	PayloadType *payload;
	
	switch(mode){
		case MEDIA_API_DECODER:	
			payload = rtp_profile_get_payload(profile, pt);
			if(payload == NULL){
				api_error("media_api: undefined payload in URL\n");
				return NULL;
			}
			return ms_decoder_new_with_string_id(payload->mime_type);
			
			//Commented this to include the new RtpProfile
			/*if(pt != -1) return ms_decoder_new_with_pt(pt);
			 *else return ms_copy_new();
			 */
		case MEDIA_API_ENCODER: 
			
			payload = rtp_profile_get_payload(profile, pt);
			if(payload == NULL){
				api_error("media_api: undefined payload in URL\n");
				return NULL;
			}
			return ms_encoder_new_with_string_id(payload->mime_type);
			/*if(pt != -1) return ms_encoder_new_with_pt(pt);
			 *else return ms_copy_new();
			 */
	}
}

bool myAudioStream::init_filters(const QString & payload)
{
    /** Init filters **/
    stream->soundwrite = ms_snd_card_create_writer(playcard);
    RtpProfile *profile = rtp_session_get_profile(stream->session);
    PayloadType *pt;

    /* List all available payloads */
    QMap<QString,int> payloads;
    for (int i = 0; i < RTP_PROFILE_MAX_PAYLOADS; i++) {
        pt = rtp_profile_get_payload(profile,i);
        if (pt != 0) {
            QString payload(pt->mime_type);
            if (payloads.contains(payload)) {
                payload.append(" " + QString::number(pt->clock_rate));
            }
            payloads.insert(payload,i);
        }
    }

    if (!payloads.contains(payload)) {
        ms_error("Could not find payload %s", payload.toStdString().c_str());
        return false;
    }

    int payload_type_number = payloads.value(payload);
    /* Create filters */
    pt = rtp_profile_get_payload(profile,payload_type_number);
    stream->decoder = ms_filter_create_decoder(pt->mime_type);
    stream->rtprecv = ms_filter_new(MS_RTP_RECV_ID);
    stream->dtmfgen = ms_filter_new(MS_DTMF_GEN_ID);

    /** Configure filter options **/
    /* Set payload type to use when receiving */
    rtp_session_set_payload_type(stream->session, payload_type_number);
    /* Set session used by rtprecv */
    ms_filter_call_method(stream->rtprecv,MS_RTP_RECV_SET_SESSION,stream->session);
    /* Setup soundwrite and decoder parameters */
    int sr = pt->clock_rate;
    int chan = pt->channels;
    if (ms_filter_call_method(stream->soundwrite, MS_FILTER_SET_SAMPLE_RATE, &sr) !=0 ) {
        ms_error("Problem setting sample rate on soundwrite filter!");
        return false;
    }
    if (ms_filter_call_method(stream->soundwrite, MS_FILTER_SET_NCHANNELS, &chan) != 0) {
        ms_error("Failed to set sample rate on soundwrite filter!");
        return false;
    }

    if (ms_filter_call_method(stream->decoder, MS_FILTER_SET_SAMPLE_RATE, &sr) != 0) {
        ms_error("Problem setting sample rate on decoder filter!");
        return false;
    }
    return true;
}

PayloadType * rtp_profile_get_payload_from_mime(RtpProfile *profile,const char *mime)
{
    int pt;
    pt=rtp_profile_get_payload_number_from_mime(profile,mime);
    if (pt==-1) return NULL;
    else return rtp_profile_get_payload(profile,pt);
}

PayloadType * rtp_profile_find_payload(RtpProfile *prof,const char *mime,int rate,int channels)
{
    int i;
    i=rtp_profile_find_payload_number(prof,mime,rate,channels);
    if (i>=0) return rtp_profile_get_payload(prof,i);
    return NULL;
}

uint16_t rtp_session_get_avpf_rr_interval(RtpSession *session) {
	PayloadType *pt = rtp_profile_get_payload(session->rcv.profile, session->rcv.pt);
	PayloadTypeAvpfParams params;
	if (!pt) return RTCP_DEFAULT_REPORT_INTERVAL;
	params=payload_type_get_avpf_params(pt);
	return (uint16_t)params.trr_interval;
}

static void receiver_process(MSFilter * f)
{
	ReceiverData *d = (ReceiverData *) f->data;
	mblk_t *m;
	uint32_t timestamp;
	if (d->session == NULL)
		return;
	
	if (d->reset_jb){
		ms_message("Reseting jitter buffer");
		rtp_session_resync(d->session);
		d->reset_jb=FALSE;
	}

	if (d->starting){
		PayloadType *pt=rtp_profile_get_payload(
			rtp_session_get_profile(d->session),
			rtp_session_get_recv_payload_type(d->session));
		if (pt && pt->type!=PAYLOAD_VIDEO)
			rtp_session_flush_sockets(d->session);
		d->starting=FALSE;
	}

	timestamp = (uint32_t) (f->ticker->time * (d->rate/1000));
	while ((m = rtp_session_recvm_with_ts(d->session, timestamp)) != NULL) {
		mblk_set_timestamp_info(m, rtp_get_timestamp(m));
		mblk_set_marker_info(m, rtp_get_markbit(m));
		mblk_set_cseq(m, rtp_get_seqnumber(m));
		rtp_get_payload(m,&m->b_rptr);		
		ms_queue_put(f->outputs[0], m);
	}
}

static void init_video_streams(video_stream_tester_t *vst1, video_stream_tester_t *vst2, bool_t avpf, bool_t one_way, OrtpNetworkSimulatorParams *params, int payload_type) {
	PayloadType *pt;

	create_video_stream(vst1, payload_type);
	create_video_stream(vst2, payload_type);

	/* Enable/disable avpf. */
	pt = rtp_profile_get_payload(&rtp_profile, payload_type);
	CU_ASSERT_PTR_NOT_NULL_FATAL(pt);
	if (avpf == TRUE) {
		payload_type_set_flag(pt, PAYLOAD_TYPE_RTCP_FEEDBACK_ENABLED);
	} else {
		payload_type_unset_flag(pt, PAYLOAD_TYPE_RTCP_FEEDBACK_ENABLED);
	}

	/* Configure network simulator. */
	if ((params != NULL) && (params->enabled == TRUE)) {
		rtp_session_enable_network_simulation(vst1->vs->ms.sessions.rtp_session, params);
		rtp_session_enable_network_simulation(vst2->vs->ms.sessions.rtp_session, params);
	}

	if (one_way == TRUE) {
		video_stream_set_direction(vst1->vs, VideoStreamRecvOnly);
	}

	CU_ASSERT_EQUAL(video_stream_start(vst1->vs, &rtp_profile, vst2->local_ip, vst2->local_rtp, vst2->local_ip, vst2->local_rtcp, payload_type, 50, vst1->cam), 0);
	CU_ASSERT_EQUAL(video_stream_start(vst2->vs, &rtp_profile, vst1->local_ip, vst1->local_rtp, vst1->local_ip, vst1->local_rtcp, payload_type, 50, vst2->cam), 0);
}

static int get_receiver_output_fmt(MSFilter *f, void *arg) {
	ReceiverData *d = (ReceiverData *) f->data;
	MSPinFormat *pinFmt = (MSPinFormat *)arg;
	PayloadType *pt = rtp_profile_get_payload(rtp_session_get_profile(d->session), rtp_session_get_send_payload_type(d->session));
	pinFmt->fmt = ms_factory_get_audio_format(f->factory, pt->mime_type, pt->clock_rate, pt->channels, NULL);
	return 0;
}

/*returns TRUE if the packet is ok to be sent to output queue*/
static bool_t receiver_check_payload_type(MSFilter *f, ReceiverData *d, mblk_t *m){
	int ptn=rtp_get_payload_type(m);
	PayloadType *pt;
	if (ptn==d->current_pt) return TRUE;
	pt=rtp_profile_get_payload(rtp_session_get_profile(d->session), ptn);
	if (pt==NULL){
		ms_warning("Discarding packet with unknown payload type %i",ptn);
		return FALSE;
	}
	if (strcasecmp(pt->mime_type,"CN")==0){
		MSCngData cngdata;
		uint8_t *data=NULL;
		int datasize=rtp_get_payload(m, &data);
		if (data){
			if (datasize<= sizeof(cngdata.data)){
				memcpy(cngdata.data, data, datasize);
				cngdata.datasize=datasize;
				ms_filter_notify(f, MS_RTP_RECV_GENERIC_CN_RECEIVED, &cngdata);
			}else{
				ms_warning("CN packet has unexpected size %i", datasize);
			}
		}
		return FALSE;
	}
	d->current_pt = ptn;
	return TRUE;
}

static bool_t simple_analyzer_process_rtcp(MSQosAnalyzer *objbase, mblk_t *rtcp){
	MSSimpleQosAnalyzer *obj=(MSSimpleQosAnalyzer*)objbase;
	rtpstats_t *cur;
	const report_block_t *rb=NULL;
	bool_t got_stats=FALSE;
	
	if (rtcp_is_SR(rtcp)){
		rb=rtcp_SR_get_report_block(rtcp,0);
	}else if (rtcp_is_RR(rtcp)){
		rb=rtcp_RR_get_report_block(rtcp,0);
	}
	if (rb && report_block_get_ssrc(rb)==rtp_session_get_send_ssrc(obj->session)){

		obj->curindex++;
		cur=&obj->stats[obj->curindex % STATS_HISTORY];

		if (obj->clockrate==0){
			PayloadType *pt=rtp_profile_get_payload(rtp_session_get_send_profile(obj->session),rtp_session_get_send_payload_type(obj->session));
			if (pt!=NULL) obj->clockrate=pt->clock_rate;
			else return FALSE;
		}
		if (ortp_loss_rate_estimator_process_report_block(objbase->lre,&obj->session->rtp,rb)){
			cur->lost_percentage=ortp_loss_rate_estimator_get_value(objbase->lre);
			cur->int_jitter=1000.0*(float)report_block_get_interarrival_jitter(rb)/(float)obj->clockrate;
			cur->rt_prop=rtp_session_get_round_trip_propagation(obj->session);

			ms_message("MSSimpleQosAnalyzer: lost_percentage=%f, int_jitter=%f ms, rt_prop=%f sec",
				cur->lost_percentage,cur->int_jitter,cur->rt_prop);
			got_stats=TRUE;
		}
	}
	return got_stats;
}

static int payload_type_fill_from_rtpmap(PayloadType *pt, const char *rtpmap){
	if (rtpmap==NULL){
		PayloadType *refpt=rtp_profile_get_payload(&av_profile,payload_type_get_number(pt));
		if (refpt){
			pt->mime_type=ms_strdup(refpt->mime_type);
			pt->clock_rate=refpt->clock_rate;
		}else{
			ms_error("payload number %i has no rtpmap and is unknown in AV Profile, ignored.",
			    payload_type_get_number(pt));
			return -1;
		}
	}else{
		char *mime=ms_strdup(rtpmap);
		char *p=strchr(mime,'/');
		if (p){
			char *chans;
			*p='\0';
			p++;
			chans=strchr(p,'/');
			if (chans){
				*chans='\0';
				chans++;
				pt->channels=atoi(chans);
			}else pt->channels=1;
			pt->clock_rate=atoi(p);
		}
		pt->mime_type=mime;
	}
	return 0;
}

bool_t rtp_session_avpf_payload_type_feature_enabled(RtpSession *session, unsigned char feature) {
	PayloadType *pt = rtp_profile_get_payload(session->rcv.profile, session->rcv.pt);
	PayloadTypeAvpfParams params;
	if (!pt) return FALSE;
	params = payload_type_get_avpf_params(pt);
	if (params.features & feature) return TRUE;
	return FALSE;
}

/**
 *	Allocates a new rtp packet to be used to add named telephony events. The application can use
 *	then rtp_session_add_telephone_event() to add named events to the packet.
 *	Finally the packet has to be sent with rtp_session_sendm_with_ts().
 *
 * @param session a rtp session.
 * @param start boolean to indicate if the marker bit should be set.
 *
 * @return a message block containing the rtp packet if successfull, NULL if the rtp session
 * cannot support telephony event (because the rtp profile it is bound to does not include
 * a telephony event payload type).
**/
mblk_t	*rtp_session_create_telephone_event_packet(RtpSession *session, int start)
{
	mblk_t *mp;
	rtp_header_t *rtp;
	PayloadType *cur_pt=rtp_profile_get_payload(session->snd.profile, rtp_session_get_send_payload_type(session));
	int tev_pt = session->tev_send_pt;
	
	if (tev_pt != -1){
		PayloadType *cur_tev_pt=rtp_profile_get_payload(session->snd.profile, tev_pt);
		if (!cur_tev_pt){
			ortp_error("Undefined telephone-event payload type %i choosen for sending telephone event", tev_pt);
			tev_pt = -1;
		}else if (cur_pt && cur_tev_pt->clock_rate != cur_pt->clock_rate){
			ortp_warning("Telephone-event payload type %i has clockrate %i while main audio codec has clockrate %i: this is not permitted.",
				tev_pt, cur_tev_pt->clock_rate, cur_pt->clock_rate);
		}
	}
	
	if (tev_pt == -1){
		tev_pt = rtp_profile_find_payload_number(session->snd.profile, "telephone-event", cur_pt ? cur_pt->clock_rate : 8000, 1);
	}
	return_val_if_fail(tev_pt!=-1,NULL);
	
	mp=allocb(RTP_FIXED_HEADER_SIZE+TELEPHONY_EVENTS_ALLOCATED_SIZE,BPRI_MED);
	if (mp==NULL) return NULL;
	rtp=(rtp_header_t*)mp->b_rptr;
	rtp->version = 2;
	rtp->markbit=start;
	rtp->padbit = 0;
	rtp->extbit = 0;
	rtp->cc = 0;
	rtp->ssrc = session->snd.ssrc;
	/* timestamp set later, when packet is sended */
	/*seq number set later, when packet is sended */
	
	/*set the payload type */
	rtp->paytype=tev_pt;
	
	/*copy the payload */
	mp->b_wptr+=RTP_FIXED_HEADER_SIZE;
	return mp;
}

static RtpProfile *make_profile(LinphoneCall *call, const SalMediaDescription *md, const SalStreamDescription *desc, int *used_pt){
	int bw;
	const MSList *elem;
	RtpProfile *prof=rtp_profile_new("Call profile");
	bool_t first=TRUE;
	int remote_bw=0;
	LinphoneCore *lc=call->core;
	int up_ptime=0;
	*used_pt=-1;
	
	for(elem=desc->payloads;elem!=NULL;elem=elem->next){
		PayloadType *pt=(PayloadType*)elem->data;
		int number;
		
		if ((pt->flags & PAYLOAD_TYPE_FLAG_CAN_SEND) && first) {
			if (desc->type==SalAudio){
				linphone_core_update_allocated_audio_bandwidth_in_call(call,pt);
				up_ptime=linphone_core_get_upload_ptime(lc);
			}
			*used_pt=payload_type_get_number(pt);
			first=FALSE;
		}
		if (desc->bandwidth>0) remote_bw=desc->bandwidth;
		else if (md->bandwidth>0) {
			/*case where b=AS is given globally, not per stream*/
			remote_bw=md->bandwidth;
			if (desc->type==SalVideo){
				remote_bw=get_video_bandwidth(remote_bw,call->audio_bw);
			}
		}
		
		if (desc->type==SalAudio){			
				bw=get_min_bandwidth(call->audio_bw,remote_bw);
		}else bw=get_min_bandwidth(get_video_bandwidth(linphone_core_get_upload_bandwidth (lc),call->audio_bw),remote_bw);
		if (bw>0) pt->normal_bitrate=bw*1000;
		else if (desc->type==SalAudio){
			pt->normal_bitrate=-1;
		}
		if (desc->ptime>0){
			up_ptime=desc->ptime;
		}
		if (up_ptime>0){
			char tmp[40];
			snprintf(tmp,sizeof(tmp),"ptime=%i",up_ptime);
			payload_type_append_send_fmtp(pt,tmp);
		}
		number=payload_type_get_number(pt);
		if (rtp_profile_get_payload(prof,number)!=NULL){
			ms_warning("A payload type with number %i already exists in profile !",number);
		}else
			rtp_profile_set_payload(prof,number,pt);
	}
	return prof;
}

static void receiver_preprocess(MSFilter * f){
	ReceiverData *d = (ReceiverData *) f->data;
	if (d->session){
		PayloadType *pt=rtp_profile_get_payload(
			rtp_session_get_profile(d->session),
			rtp_session_get_recv_payload_type(d->session));
		if (pt){
			if (pt->type!=PAYLOAD_VIDEO)
				rtp_session_flush_sockets(d->session);
		}
	}
}