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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 5.7 2024/07/13 20:12:24 kls Exp $
*/
#include "eitscan.h"
#include <stdlib.h>
#include "channels.h"
#include "dvbdevice.h"
#include "skins.h"
#include "transfer.h"
// --- cScanData -------------------------------------------------------------
class cScanData : public cListObject {
private:
cChannel channel;
public:
cScanData(const cChannel *Channel);
virtual int Compare(const cListObject &ListObject) const;
int Source(void) const { return channel.Source(); }
int Transponder(void) const { return channel.Transponder(); }
const cChannel *GetChannel(void) const { return &channel; }
};
cScanData::cScanData(const cChannel *Channel)
{
channel = *Channel;
}
int cScanData::Compare(const cListObject &ListObject) const
{
const cScanData *sd = (const cScanData *)&ListObject;
int r = Source() - sd->Source();
if (r == 0)
r = Transponder() - sd->Transponder();
return r;
}
// --- cScanList -------------------------------------------------------------
class cScanList : public cList<cScanData> {
private:
bool HasDeviceForChannelEIT(const cChannel *Channel) const;
public:
void AddTransponders(const cList<cChannel> *Channels);
void AddTransponder(const cChannel *Channel);
};
bool cScanList::HasDeviceForChannelEIT(const cChannel *Channel) const
{
for (int i = 0; i < cDevice::NumDevices(); i++) {
cDevice *Device = cDevice::GetDevice(i);
if (Device && Device->ProvidesEIT() && Device->ProvidesTransponder(Channel))
return true;
}
return false;
}
void cScanList::AddTransponders(const cList<cChannel> *Channels)
{
for (const cChannel *ch = Channels->First(); ch; ch = Channels->Next(ch))
AddTransponder(ch);
Sort();
}
void cScanList::AddTransponder(const cChannel *Channel)
{
if (Channel->Source() && Channel->Transponder() && (Setup.EPGScanMaxChannel <= 0 || Channel->Number() < Setup.EPGScanMaxChannel)) {
if (!HasDeviceForChannelEIT(Channel))
return;
for (cScanData *sd = First(); sd; sd = Next(sd)) {
if (sd->Source() == Channel->Source() && ISTRANSPONDER(sd->Transponder(), Channel->Transponder()))
return;
}
Add(new cScanData(Channel));
}
}
// --- 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)
{
paused = false;
lastScan = 0;
lastActivity = time(NULL);
currentChannel = 0;
scanList = new cScanList;
transponderList = NULL;
}
cEITScanner::~cEITScanner()
{
delete scanList;
delete transponderList;
}
void cEITScanner::AddTransponder(cChannel *Channel)
{
if (!transponderList)
transponderList = new cTransponderList;
transponderList->AddTransponder(Channel);
}
void cEITScanner::ForceScan(void)
{
lastActivity = 0;
}
void cEITScanner::Activity(void)
{
if (currentChannel) {
LOCK_CHANNELS_READ;
Channels->SwitchTo(currentChannel);
currentChannel = 0;
}
lastActivity = time(NULL);
}
void cEITScanner::Process(void)
{
if (Setup.EPGScanTimeout || !lastActivity) { // !lastActivity means a scan was forced
time_t now = time(NULL);
if (now - lastScan > ScanTimeout && now - lastActivity > ActivityTimeout) {
if (Setup.EPGPauseAfterScan && scanList->Count() == 0 && lastActivity && lastScan && now - lastScan < Setup.EPGScanTimeout * 3600) {
if (!paused) {
dsyslog("pause EPG scan");
paused = true;
}
// Allow unused devices to go into power save mode:
if ((now - lastScan) % 10 == 0) { // let's not do this too often
for (int i = 0; i < cDevice::NumDevices(); i++) {
if (cDevice *Device = cDevice::GetDevice(i))
Device->SetPowerSaveIfUnused();
}
}
return; // pause for Setup.EPGScanTimeout hours
}
else if (paused) {
dsyslog("start EPG scan");
paused = false;
}
cStateKey StateKey;
if (const cChannels *Channels = cChannels::GetChannelsRead(StateKey, 10)) {
if (scanList->Count() == 0) {
if (transponderList) {
scanList->AddTransponders(transponderList);
delete transponderList;
transponderList = NULL;
}
scanList->AddTransponders(Channels);
//dsyslog("EIT scan: %d scanList entries", scanList->Count());
}
for (int i = 0; i < cDevice::NumDevices(); i++) {
cDevice *Device = cDevice::GetDevice(i);
if (Device && Device->ProvidesEIT()) {
cScanData *Next = NULL;
for (cScanData *ScanData = scanList->First(); ScanData; ScanData = Next) {
Next = scanList->Next(ScanData);
const cChannel *Channel = ScanData->GetChannel();
if (Channel) {
if (Device->IsTunedToTransponder(Channel))
scanList->Del(ScanData);
else if (!Channel->Ca() || Channel->Ca() == Device->DeviceNumber() + 1 || Channel->Ca() >= CA_ENCRYPTED_MIN) {
if (Device->ProvidesTransponder(Channel)) {
if (Device->Priority() < 0) {
if (const cPositioner *Positioner = Device->Positioner()) {
if (Positioner->LastLongitude() != cSource::Position(Channel->Source()))
continue;
}
bool MaySwitchTransponder = Device->MaySwitchTransponder(Channel);
if (MaySwitchTransponder || Device->ProvidesTransponderExclusively(Channel) && now - lastActivity > Setup.EPGScanTimeout * 3600) {
if (!MaySwitchTransponder) {
if (Device == cDevice::ActualDevice() && !currentChannel) {
cDevice::PrimaryDevice()->StopReplay(); // stop transfer mode
currentChannel = Device->CurrentChannel();
Skins.Message(mtInfo, tr("Starting EPG scan"));
}
}
//dsyslog("EIT scan: %d device %d source %-8s tp %5d", scanList->Count(), Device->DeviceNumber() + 1, *cSource::ToString(Channel->Source()), Channel->Transponder());
Device->SwitchChannel(Channel, false);
scanList->Del(ScanData);
break;
}
}
}
}
}
}
}
}
if (scanList->Count() == 0) {
if (lastActivity == 0) // this was a triggered scan
Activity();
}
StateKey.Remove();
}
lastScan = time(NULL);
}
}
}
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