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/*
The mediastreamer library aims at providing modular media processing and I/O
for linphone, but also for any telephony application.
Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "msrtprecv.h"
/* some utilities to convert mblk_t to MSMessage and vice-versa */
MSMessage *msgb_2_ms_message(mblk_t* mp){
MSMessage *msg;
MSBuffer *msbuf;
if (mp->b_datap->ref_count!=1) return NULL; /* cannot handle properly non-unique buffers*/
/* create a MSBuffer using the mblk_t buffer */
msg=ms_message_alloc();
msbuf=ms_buffer_alloc(0);
msbuf->buffer=mp->b_datap->db_base;
msbuf->size=(char*)mp->b_datap->db_lim-(char*)mp->b_datap->db_base;
ms_message_set_buf(msg,msbuf);
msg->size=mp->b_wptr-mp->b_rptr;
msg->data=mp->b_rptr;
/* free the mblk_t */
g_free(mp->b_datap);
g_free(mp);
return msg;
}
static MSRtpRecvClass *ms_rtp_recv_class=NULL;
MSFilter * ms_rtp_recv_new(void)
{
MSRtpRecv *r;
r=g_new(MSRtpRecv,1);
ms_rtp_recv_init(r);
if (ms_rtp_recv_class==NULL)
{
ms_rtp_recv_class=g_new0(MSRtpRecvClass,1);
ms_rtp_recv_class_init(ms_rtp_recv_class);
}
MS_FILTER(r)->klass=MS_FILTER_CLASS(ms_rtp_recv_class);
return(MS_FILTER(r));
}
/* FOR INTERNAL USE*/
void ms_rtp_recv_init(MSRtpRecv *r)
{
ms_filter_init(MS_FILTER(r));
MS_FILTER(r)->outfifos=r->f_outputs;
MS_FILTER(r)->outqueues=r->q_outputs;
memset(r->f_outputs,0,sizeof(MSFifo*)*MSRTPRECV_MAX_OUTPUTS);
memset(r->q_outputs,0,sizeof(MSFifo*)*MSRTPRECV_MAX_OUTPUTS);
r->rtpsession=NULL;
r->stream_started=0;
}
void ms_rtp_recv_class_init(MSRtpRecvClass *klass)
{
ms_filter_class_init(MS_FILTER_CLASS(klass));
ms_filter_class_set_name(MS_FILTER_CLASS(klass),"RTPRecv");
MS_FILTER_CLASS(klass)->max_qoutputs=MSRTPRECV_MAX_OUTPUTS;
MS_FILTER_CLASS(klass)->max_foutputs=MSRTPRECV_MAX_OUTPUTS;
MS_FILTER_CLASS(klass)->w_maxgran=MSRTPRECV_DEF_GRAN;
ms_filter_class_set_attr(MS_FILTER_CLASS(klass),FILTER_IS_SOURCE);
MS_FILTER_CLASS(klass)->destroy=(MSFilterDestroyFunc)ms_rtp_recv_destroy;
MS_FILTER_CLASS(klass)->process=(MSFilterProcessFunc)ms_rtp_recv_process;
MS_FILTER_CLASS(klass)->setup=(MSFilterSetupFunc)ms_rtp_recv_setup;
}
void ms_rtp_recv_process(MSRtpRecv *r)
{
MSFifo *fo;
MSQueue *qo;
MSSync *sync= r->sync;
void *d;
mblk_t *mp;
gint len;
gint gran=ms_sync_get_samples_per_tick(MS_SYNC(sync));
if (r->rtpsession==NULL) return;
/* process output fifo and output queue*/
fo=r->f_outputs[0];
if (fo!=NULL)
{
while( (mp=rtp_session_recvm_with_ts(r->rtpsession,r->prev_ts))!=NULL) {
/* try to get rtp packets and paste them to the output fifo */
r->stream_started=1;
len=mp->b_cont->b_wptr-mp->b_cont->b_rptr;
ms_fifo_get_write_ptr(fo,len,&d);
if (d!=NULL){
memcpy(d,mp->b_cont->b_rptr,len);
}else ms_warning("ms_rtp_recv_process: no space on output fifo !");
freemsg(mp);
}
r->prev_ts+=gran;
}
qo=r->q_outputs[0];
if (qo!=NULL)
{
guint32 clock;
gint got=0;
/* we are connected with queues (surely for video)*/
/* use the sync system time to compute a timestamp */
PayloadType *pt=rtp_profile_get_payload(r->rtpsession->profile,r->rtpsession->payload_type);
if (pt==NULL) {
ms_warning("ms_rtp_recv_process(): NULL RtpPayload- skipping.");
return;
}
clock=(guint32)(((double)sync->time*(double)pt->clock_rate)/1000.0);
/*g_message("Querying packet with timestamp %u",clock);*/
/* get rtp packet, and send them through the output queue */
while ( (mp=rtp_session_recvm_with_ts(r->rtpsession,clock))!=NULL ){
MSMessage *msg;
mblk_t *mdata;
/*g_message("Got packet with timestamp %u",clock);*/
got++;
r->stream_started=1;
mdata=mp->b_cont;
freeb(mp);
msg=msgb_2_ms_message(mdata);
ms_queue_put(qo,msg);
}
}
}
void ms_rtp_recv_destroy( MSRtpRecv *obj)
{
g_free(obj);
}
RtpSession * ms_rtp_recv_set_session(MSRtpRecv *obj,RtpSession *session)
{
RtpSession *old=obj->rtpsession;
obj->rtpsession=session;
obj->prev_ts=0;
return old;
}
void ms_rtp_recv_setup(MSRtpRecv *r,MSSync *sync)
{
r->sync=sync;
r->stream_started=0;
}
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