vdr 2.6.4
eitscan.c
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1/*
2 * eitscan.c: EIT scanner
3 *
4 * See the main source file 'vdr.c' for copyright information and
5 * how to reach the author.
6 *
7 * $Id: eitscan.c 4.3 2019/03/12 11:46:05 kls Exp $
8 */
9
10#include "eitscan.h"
11#include <stdlib.h>
12#include "channels.h"
13#include "dvbdevice.h"
14#include "skins.h"
15#include "transfer.h"
16
17// --- cScanData -------------------------------------------------------------
18
19class cScanData : public cListObject {
20private:
22public:
23 cScanData(const cChannel *Channel);
24 virtual int Compare(const cListObject &ListObject) const;
25 int Source(void) const { return channel.Source(); }
26 int Transponder(void) const { return channel.Transponder(); }
27 const cChannel *GetChannel(void) const { return &channel; }
28 };
29
31{
32 channel = *Channel;
33}
34
35int cScanData::Compare(const cListObject &ListObject) const
36{
37 const cScanData *sd = (const cScanData *)&ListObject;
38 int r = Source() - sd->Source();
39 if (r == 0)
40 r = Transponder() - sd->Transponder();
41 return r;
42}
43
44// --- cScanList -------------------------------------------------------------
45
46class cScanList : public cList<cScanData> {
47public:
48 void AddTransponders(const cList<cChannel> *Channels);
49 void AddTransponder(const cChannel *Channel);
50 };
51
53{
54 for (const cChannel *ch = Channels->First(); ch; ch = Channels->Next(ch))
56 Sort();
57}
58
60{
61 if (Channel->Source() && Channel->Transponder()) {
62 for (cScanData *sd = First(); sd; sd = Next(sd)) {
63 if (sd->Source() == Channel->Source() && ISTRANSPONDER(sd->Transponder(), Channel->Transponder()))
64 return;
65 }
66 Add(new cScanData(Channel));
67 }
68}
69
70// --- cTransponderList ------------------------------------------------------
71
72class cTransponderList : public cList<cChannel> {
73public:
74 void AddTransponder(cChannel *Channel);
75 };
76
78{
79 for (cChannel *ch = First(); ch; ch = Next(ch)) {
80 if (ch->Source() == Channel->Source() && ch->Transponder() == Channel->Transponder()) {
81 delete Channel;
82 return;
83 }
84 }
85 Add(Channel);
86}
87
88// --- cEITScanner -----------------------------------------------------------
89
91
93{
94 lastScan = lastActivity = time(NULL);
96 scanList = NULL;
97 transponderList = NULL;
98}
99
101{
102 delete scanList;
103 delete transponderList;
104}
105
107{
108 if (!transponderList)
111}
112
114{
115 lastActivity = 0;
116}
117
119{
120 if (currentChannel) {
122 Channels->SwitchTo(currentChannel);
123 currentChannel = 0;
124 }
125 lastActivity = time(NULL);
126}
127
129{
130 if (Setup.EPGScanTimeout || !lastActivity) { // !lastActivity means a scan was forced
131 time_t now = time(NULL);
132 if (now - lastScan > ScanTimeout && now - lastActivity > ActivityTimeout) {
133 cStateKey StateKey;
134 if (const cChannels *Channels = cChannels::GetChannelsRead(StateKey, 10)) {
135 if (!scanList) {
136 scanList = new cScanList;
137 if (transponderList) {
139 delete transponderList;
140 transponderList = NULL;
141 }
142 scanList->AddTransponders(Channels);
143 }
144 bool AnyDeviceSwitched = false;
145 for (int i = 0; i < cDevice::NumDevices(); i++) {
146 cDevice *Device = cDevice::GetDevice(i);
147 if (Device && Device->ProvidesEIT()) {
148 for (cScanData *ScanData = scanList->First(); ScanData; ScanData = scanList->Next(ScanData)) {
149 const cChannel *Channel = ScanData->GetChannel();
150 if (Channel) {
151 if (!Channel->Ca() || Channel->Ca() == Device->DeviceNumber() + 1 || Channel->Ca() >= CA_ENCRYPTED_MIN) {
152 if (Device->ProvidesTransponder(Channel)) {
153 if (Device->Priority() < 0) {
154 if (const cPositioner *Positioner = Device->Positioner()) {
155 if (Positioner->LastLongitude() != cSource::Position(Channel->Source()))
156 continue;
157 }
158 bool MaySwitchTransponder = Device->MaySwitchTransponder(Channel);
159 if (MaySwitchTransponder || Device->ProvidesTransponderExclusively(Channel) && now - lastActivity > Setup.EPGScanTimeout * 3600) {
160 if (!MaySwitchTransponder) {
161 if (Device == cDevice::ActualDevice() && !currentChannel) {
162 cDevice::PrimaryDevice()->StopReplay(); // stop transfer mode
163 currentChannel = Device->CurrentChannel();
164 Skins.Message(mtInfo, tr("Starting EPG scan"));
165 }
166 }
167 //dsyslog("EIT scan: device %d source %-8s tp %5d", Device->DeviceNumber() + 1, *cSource::ToString(Channel->Source()), Channel->Transponder());
168 Device->SwitchChannel(Channel, false);
169 scanList->Del(ScanData);
170 AnyDeviceSwitched = true;
171 break;
172 }
173 }
174 }
175 }
176 }
177 }
178 }
179 }
180 if (!AnyDeviceSwitched) {
181 delete scanList;
182 scanList = NULL;
183 if (lastActivity == 0) // this was a triggered scan
184 Activity();
185 }
186 StateKey.Remove();
187 }
188 lastScan = time(NULL);
189 }
190 }
191}
#define CA_ENCRYPTED_MIN
Definition channels.h:44
#define LOCK_CHANNELS_READ
Definition channels.h:269
#define ISTRANSPONDER(f1, f2)
Definition channels.h:18
int Source(void) const
Definition channels.h:151
int Ca(int Index=0) const
Definition channels.h:172
int Transponder(void) const
Returns the transponder frequency in MHz, plus the polarization in case of sat.
Definition channels.c:146
static const cChannels * GetChannelsRead(cStateKey &StateKey, int TimeoutMs=0)
Gets the list of channels for read access.
Definition channels.c:855
virtual const cPositioner * Positioner(void) const
Returns a pointer to the positioner (if any) this device has used to move the satellite dish to the r...
Definition device.c:772
static cDevice * ActualDevice(void)
Returns the actual receiving device in case of Transfer Mode, or the primary device otherwise.
Definition device.c:220
static cDevice * PrimaryDevice(void)
Returns the primary device.
Definition device.h:148
virtual bool MaySwitchTransponder(const cChannel *Channel) const
Returns true if it is ok to switch to the Channel's transponder on this device, without disturbing an...
Definition device.c:802
static cDevice * GetDevice(int Index)
Gets the device with the given Index.
Definition device.c:228
bool SwitchChannel(const cChannel *Channel, bool LiveView)
Switches the device to the given Channel, initiating transfer mode if necessary.
Definition device.c:807
int DeviceNumber(void) const
Returns the number of this device (0 ... numDevices - 1).
Definition device.c:165
virtual bool ProvidesEIT(void) const
Returns true if this device provides EIT data and thus wants to be tuned to the channels it can recei...
Definition device.c:762
static int CurrentChannel(void)
Returns the number of the current channel on the primary device.
Definition device.h:358
void StopReplay(void)
Stops the current replay session (if any).
Definition device.c:1386
virtual bool ProvidesTransponderExclusively(const cChannel *Channel) const
Returns true if this is the only device that is able to provide the given channel's transponder.
Definition device.c:748
static int NumDevices(void)
Returns the total number of devices.
Definition device.h:129
int Priority(void) const
Returns the priority of the current receiving session (-MAXPRIORITY..MAXPRIORITY),...
Definition device.c:1660
virtual bool ProvidesTransponder(const cChannel *Channel) const
Returns true if this device can provide the transponder of the given Channel (which implies that it c...
Definition device.c:743
int currentChannel
Definition eitscan.h:27
cEITScanner(void)
Definition eitscan.c:92
void AddTransponder(cChannel *Channel)
Definition eitscan.c:106
@ ScanTimeout
Definition eitscan.h:24
@ ActivityTimeout
Definition eitscan.h:23
void ForceScan(void)
Definition eitscan.c:113
void Process(void)
Definition eitscan.c:128
cScanList * scanList
Definition eitscan.h:28
time_t lastActivity
Definition eitscan.h:26
cTransponderList * transponderList
Definition eitscan.h:29
void Activity(void)
Definition eitscan.c:118
time_t lastScan
Definition eitscan.h:26
void Del(cListObject *Object, bool DeleteObject=true)
Definition tools.c:2220
void Add(cListObject *Object, cListObject *After=NULL)
Definition tools.c:2188
void Sort(void)
Definition tools.c:2312
Definition tools.h:641
const T * First(void) const
Returns the first element in this list, or NULL if the list is empty.
Definition tools.h:653
const T * Next(const T *Object) const
< Returns the element immediately before Object in this list, or NULL if Object is the first element ...
Definition tools.h:660
A steerable satellite dish generally points to the south on the northern hemisphere,...
Definition positioner.h:31
int Transponder(void) const
Definition eitscan.c:26
virtual int Compare(const cListObject &ListObject) const
Must return 0 if this object is equal to ListObject, a positive value if it is "greater",...
Definition eitscan.c:35
int Source(void) const
Definition eitscan.c:25
const cChannel * GetChannel(void) const
Definition eitscan.c:27
cChannel channel
Definition eitscan.c:21
cScanData(const cChannel *Channel)
Definition eitscan.c:30
void AddTransponder(const cChannel *Channel)
Definition eitscan.c:59
void AddTransponders(const cList< cChannel > *Channels)
Definition eitscan.c:52
int EPGScanTimeout
Definition config.h:298
eKeys Message(eMessageType Type, const char *s, int Seconds=0)
Displays the given message, either through a currently visible display object that is capable of doin...
Definition skins.c:250
int Position(void)
Returns the orbital position of the satellite in case this is a DVB-S source (zero otherwise).
Definition sources.h:35
void Remove(bool IncState=true)
Removes this key from the lock it was previously used with.
Definition thread.c:867
void AddTransponder(cChannel *Channel)
Definition eitscan.c:77
cSetup Setup
Definition config.c:372
cEITScanner EITScanner
Definition eitscan.c:90
#define tr(s)
Definition i18n.h:85
cSkins Skins
Definition skins.c:219
@ mtInfo
Definition skins.h:37