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/*
* ts2pkt.cpp: A plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
* $Id$
*/
#include "ts2pkt.h"
cMarkAdTS2Pkt::cMarkAdTS2Pkt(int RecvNumber, const char *QueueName, int QueueSize)
{
recvnumber=RecvNumber;
queue=new cMarkAdPaketQueue(RecvNumber,QueueName,QueueSize);
Reset();
}
cMarkAdTS2Pkt::~cMarkAdTS2Pkt()
{
if (queue) delete queue;
}
void cMarkAdTS2Pkt::Reset(int ErrIndex)
{
switch (ErrIndex)
{
case MA_ERR_TOSMALL:
dsyslog("markad [%i]: input to small",recvnumber);
break;
case MA_ERR_NOSYNC:
dsyslog("markad [%i]: found no sync",recvnumber);
break;
case MA_ERR_SEQ:
dsyslog("markad [%i]: sequence error",recvnumber);
break;
case MA_ERR_AFC:
dsyslog("markad [%i]: wrong AFC value",recvnumber);
break;
case MA_ERR_TOBIG:
dsyslog("markad [%i]: buflen > 188",recvnumber);
break;
case MA_ERR_NEG:
dsyslog("markad [%i]: buflen < 0",recvnumber);
break;
}
counter=-1;
if (queue) queue->Clear();
}
void cMarkAdTS2Pkt::Process(MarkAdPid Pid, uchar *TSData, int TSSize, uchar **PktData, int *PktSize)
{
if ((!PktData) || (!PktSize) || (!queue)) return;
*PktData=NULL;
*PktSize=0;
if (TSData)
{
if (TSSize!=TS_SIZE)
{
Reset(MA_ERR_TOSMALL);
return; // we need a full packet
}
// check TS packet sync
if (TSData[0]!=0x47)
{
Reset(MA_ERR_NOSYNC);
return;
}
struct TSHDR *tshdr = (struct TSHDR *) TSData;
int pid = (tshdr->PidH << 8) | tshdr->PidL;
if (Pid.Num!=pid)
{
return; // not for us
}
if ((counter!=-1) && (((counter+1) & 0xF)!=tshdr->Counter))
{
if (counter==tshdr->Counter)
{
// duplicate paket -> just ignore
return;
}
// sequence error
Reset(MA_ERR_SEQ);
return;
}
counter=tshdr->Counter;
if ((tshdr->AFC<=0) || (tshdr->AFC>3))
{
Reset(MA_ERR_AFC);
return;
}
// we just ignore the infos in the adaption field (e.g. OPCR/PCR)
if ((tshdr->AFC!=1) && (tshdr->AFC!=3))
{
return;
}
int buflen=TS_SIZE+1;
uchar *buf=NULL;
if (tshdr->AFC==1)
{
// payload only
buflen=TS_SIZE-sizeof(struct TSHDR);
buf=&TSData[sizeof(struct TSHDR)];
}
if (tshdr->AFC==3)
{
// adaption field + payload
struct TSADAPT *tsadapt = (struct TSADAPT *) &TSData[4];
int alen=tsadapt->Len+1;
buflen=TS_SIZE-(sizeof(struct TSHDR)+alen);
buf=&TSData[sizeof(struct TSHDR)+alen];
}
if (buflen>TS_SIZE)
{
// size to large
Reset(MA_ERR_TOBIG);
return;
}
if (buflen<0)
{
// error in size
Reset(MA_ERR_NEG);
return;
}
if (buflen==0)
{
// no data?
return;
}
queue->Put(buf,buflen);
}
*PktData=queue->GetPacket(PktSize,MA_PACKET_PKT);
return;
}
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