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/*
* transfer.c: Transfer mode
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: transfer.c 4.2 2017/12/07 15:00:33 kls Exp $
*/
#include "transfer.h"
// --- cTransfer -------------------------------------------------------------
cTransfer::cTransfer(const cChannel *Channel)
:cReceiver(Channel, TRANSFERPRIORITY)
{
lastErrorReport = 0;
numLostPackets = 0;
patPmtGenerator.SetChannel(Channel);
}
cTransfer::~cTransfer()
{
cReceiver::Detach();
cPlayer::Detach();
}
void cTransfer::Activate(bool On)
{
if (On) {
PlayTs(patPmtGenerator.GetPat(), TS_SIZE);
int Index = 0;
while (uchar *pmt = patPmtGenerator.GetPmt(Index))
PlayTs(pmt, TS_SIZE);
}
else
cPlayer::Detach();
}
#define MAXRETRIES 20 // max. number of retries for a single TS packet
#define RETRYWAIT 5 // time (in ms) between two retries
#define ERRORDELTA 60 // seconds before reporting lost TS packets again
void cTransfer::Receive(const uchar *Data, int Length)
{
if (cPlayer::IsAttached()) {
// Transfer Mode means "live tv", so there's no point in doing any additional
// buffering here. The TS packets *must* get through here! However, every
// now and then there may be conditions where the packet just can't be
// handled when offered the first time, so that's why we try several times:
for (int i = 0; i < MAXRETRIES; i++) {
if (PlayTs(Data, Length) > 0)
return;
cCondWait::SleepMs(RETRYWAIT);
}
DeviceClear();
numLostPackets++;
if (time(NULL) - lastErrorReport > ERRORDELTA) {
esyslog("ERROR: %d TS packet(s) not accepted in Transfer Mode", numLostPackets);
numLostPackets = 0;
lastErrorReport = time(NULL);
}
}
}
// --- cTransferControl ------------------------------------------------------
cDevice *cTransferControl::receiverDevice = NULL;
cTransferControl::cTransferControl(cDevice *ReceiverDevice, const cChannel *Channel)
:cControl(transfer = new cTransfer(Channel), true)
{
ReceiverDevice->AttachReceiver(transfer);
receiverDevice = ReceiverDevice;
}
cTransferControl::~cTransferControl()
{
receiverDevice = NULL;
delete transfer;
}
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