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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 1.18 2004/01/11 15:50:59 kls Exp $
*/
#include "eitscan.h"
#include <stdlib.h>
#include "channels.h"
#include "dvbdevice.h"
// --- cScanData -------------------------------------------------------------
class cScanData : public cListObject {
private:
int source;
int transponder;
public:
cScanData(int Source, int Transponder);
virtual bool operator< (const cListObject &ListObject);
int Source(void) { return source; }
int Transponder(void) { return transponder; }
cChannel *GetChannel(cList<cChannel> *Channels);
};
cScanData::cScanData(int Source, int Transponder)
{
source = Source;
transponder = Transponder;
}
bool cScanData::operator< (const cListObject &ListObject)
{
cScanData *sd = (cScanData *)&ListObject;
return source < sd->source || source == sd->source && transponder < sd->transponder;
}
cChannel *cScanData::GetChannel(cList<cChannel> *Channels)
{
for (cChannel *Channel = Channels->First(); Channel; Channel = Channels->Next(Channel)) {
if (!Channel->GroupSep() && Channel->Source() == source && ISTRANSPONDER(Channel->Transponder(), transponder))
return Channel;
}
return NULL;
}
// --- cScanList -------------------------------------------------------------
class cScanList : public cList<cScanData> {
public:
cScanList(cList<cChannel> *Channels);
void AddTransponder(const cChannel *Channel);
};
cScanList::cScanList(cList<cChannel> *Channels)
{
for (cChannel *ch = Channels->First(); ch; ch = Channels->Next(ch))
AddTransponder(ch);
Sort();
}
void cScanList::AddTransponder(const cChannel *Channel)
{
for (cScanData *sd = First(); sd; sd = Next(sd)) {
if (sd->Source() == Channel->Source() && ISTRANSPONDER(sd->Transponder(), Channel->Transponder()))
return;
}
Add(new cScanData(Channel->Source(), Channel->Transponder()));
}
// --- cTransponderList ------------------------------------------------------
class cTransponderList : public cList<cChannel> {
public:
void AddTransponder(cChannel *Channel);
};
void cTransponderList::AddTransponder(cChannel *Channel)
{
for (cChannel *ch = First(); ch; ch = Next(ch)) {
if (ch->Source() == Channel->Source() && ch->Transponder() == Channel->Transponder()) {
delete Channel;
return;
}
}
Add(Channel);
}
// --- cEITScanner -----------------------------------------------------------
cEITScanner EITScanner;
cEITScanner::cEITScanner(void)
{
lastScan = lastActivity = time(NULL);
currentDevice = NULL;
currentChannel = 0;
numScan = 0;
scanList = NULL;
transponderList = NULL;
}
cEITScanner::~cEITScanner()
{
delete scanList;
delete transponderList;
}
void cEITScanner::AddTransponder(cChannel *Channel)
{
if (!transponderList)
transponderList = new cTransponderList;
transponderList->AddTransponder(Channel);
}
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) {
if (Channels.Lock(false, 10)) {
cList<cChannel> *ChannelList = &Channels;
if (numScan % 2 == 0 && transponderList) // switch between the list of new transponders and the actual channels in case there are transponders w/o any channels
ChannelList = transponderList;
if (!scanList)
scanList = new cScanList(ChannelList);
for (bool AnyDeviceSwitched = false; !AnyDeviceSwitched; ) {
cScanData *ScanData = NULL;
for (int i = 0; i < cDevice::NumDevices(); i++) {
if (ScanData || (ScanData = scanList->First()) != NULL) {
cDevice *Device = cDevice::GetDevice(i);
if (Device) {
if (Device != cDevice::PrimaryDevice() || (cDevice::NumDevices() == 1 && Setup.EPGScanTimeout && now - lastActivity > Setup.EPGScanTimeout * 3600)) {
if (!(Device->Receiving(true) || Device->Replaying())) {
cChannel *Channel = ScanData->GetChannel(ChannelList);
if (Channel) {
//XXX if (Device->ProvidesTransponder(Channel)) {
if ((!Channel->Ca() || Channel->Ca() == Device->DeviceNumber() + 1 || Channel->Ca() >= 0x0100) && Device->ProvidesTransponder(Channel)) { //XXX temporary for the 'sky' plugin
if (Device == cDevice::PrimaryDevice() && !currentChannel)
currentChannel = Device->CurrentChannel();
currentDevice = Device;//XXX see also dvbdevice.c!!!
Device->SwitchChannel(Channel, false);
currentDevice = NULL;
scanList->Del(ScanData);
ScanData = NULL;
AnyDeviceSwitched = true;
}
}
}
}
}
}
else
break;
}
if (ScanData && !AnyDeviceSwitched) {
scanList->Del(ScanData);
ScanData = NULL;
}
if (!scanList->Count()) {
delete scanList;
scanList = NULL;
numScan++;
if (ChannelList == transponderList) {
delete transponderList;
transponderList = NULL;
}
break;
}
}
}
lastScan = time(NULL);
Channels.Unlock();
}
}
}
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