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/*
* eitscan.c: EIT scanner
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: eitscan.c 1.8 2002/10/05 13:44:35 kls Exp $
*/
#include "eitscan.h"
#include <stdlib.h>
#include "channels.h"
#include "dvbdevice.h"
cEITScanner::cEITScanner(void)
{
lastScan = lastActivity = time(NULL);
currentChannel = 0;
lastChannel = 0;
numTransponders = 0;
transponders = NULL;
}
cEITScanner::~cEITScanner()
{
free(transponders);
}
bool cEITScanner::TransponderScanned(cChannel *Channel)
{
for (int i = 0; i < numTransponders; i++) {
if (transponders[i] == Channel->Frequency())
return true;
}
transponders = (int *)realloc(transponders, ++numTransponders * sizeof(int));
transponders[numTransponders - 1] = Channel->Frequency();
return false;
}
void cEITScanner::Activity(void)
{
if (currentChannel) {
Channels.SwitchTo(currentChannel);
currentChannel = 0;
}
lastActivity = time(NULL);
}
void cEITScanner::Process(void)
{
if (Setup.EPGScanTimeout && Channels.MaxNumber() > 1) {
time_t now = time(NULL);
if (now - lastScan > ScanTimeout && now - lastActivity > ActivityTimeout) {
for (int i = 0; i < cDevice::NumDevices(); i++) {
cDevice *Device = cDevice::GetDevice(i);
if (Device && Device->CardIndex() < MAXDVBDEVICES) {
if (Device != cDevice::PrimaryDevice() || (cDevice::NumDevices() == 1 && Setup.EPGScanTimeout && now - lastActivity > Setup.EPGScanTimeout * 3600)) {
if (!(Device->Receiving() || Device->Replaying())) {
int oldCh = lastChannel;
int ch = oldCh + 1;
while (ch != oldCh) {
if (ch > Channels.MaxNumber()) {
ch = 1;
numTransponders = 0;
}
cChannel *Channel = Channels.GetByNumber(ch);
if (Channel) {
if (!Device->ProvidesChannel(Channel))
break;
if (Channel->Sid() && !TransponderScanned(Channel)) {
if (Device == cDevice::PrimaryDevice() && !currentChannel)
currentChannel = Device->CurrentChannel();
Device->SwitchChannel(Channel, false);
lastChannel = ch;
break;
}
}
ch++;
}
}
}
}
else
lastChannel++; // avoid hangup in case the last channel in the list is not provided by a DVB card
}
lastScan = time(NULL);
}
}
}
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