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dvbdevice.c
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dvbdevice.c
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/*
* dvbdevice.c: The DVB device tuner interface
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbdevice.c 5.7 2024/07/14 15:41:01 kls Exp $
*/
#include "dvbdevice.h"
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include "channels.h"
#include "diseqc.h"
#include "dvbci.h"
#include "menuitems.h"
#include "sourceparams.h"
static int DvbApiVersion = 0x0000; // the version of the DVB driver actually in use (will be determined by the first device created)
#define BANDWIDTH_HZ_AUTO 0 // missing in DVB API 5
#define DVBS_TUNE_TIMEOUT 9000 //ms
#define DVBS_LOCK_TIMEOUT 2000 //ms
#define DVBC_TUNE_TIMEOUT 9000 //ms
#define DVBC_LOCK_TIMEOUT 2000 //ms
#define DVBT_TUNE_TIMEOUT 9000 //ms
#define DVBT_LOCK_TIMEOUT 2000 //ms
#define ATSC_TUNE_TIMEOUT 9000 //ms
#define ATSC_LOCK_TIMEOUT 2000 //ms
#define SCR_RANDOM_TIMEOUT 500 // ms (add random value up to this when tuning SCR device to avoid lockups)
#define TSBUFFERSIZE MEGABYTE(16)
// --- DVB Parameter Maps ----------------------------------------------------
const tDvbParameterMap PilotValues[] = {
{ 0, PILOT_OFF, trNOOP("off") },
{ 1, PILOT_ON, trNOOP("on") },
{ 999, PILOT_AUTO, trNOOP("auto") },
{ -1, 0, NULL }
};
const tDvbParameterMap InversionValues[] = {
{ 0, INVERSION_OFF, trNOOP("off") },
{ 1, INVERSION_ON, trNOOP("on") },
{ 999, INVERSION_AUTO, trNOOP("auto") },
{ -1, 0, NULL }
};
const tDvbParameterMap BandwidthValues[] = {
{ 5, 5000000, "5 MHz" },
{ 6, 6000000, "6 MHz" },
{ 7, 7000000, "7 MHz" },
{ 8, 8000000, "8 MHz" },
{ 10, 10000000, "10 MHz" },
{ 1712, 1712000, "1.712 MHz" },
{ 999, BANDWIDTH_HZ_AUTO, trNOOP("auto") },
{ -1, 0, NULL }
};
const tDvbParameterMap CoderateValues[] = {
{ 0, FEC_NONE, trNOOP("none") },
{ 12, FEC_1_2, "1/2" },
{ 23, FEC_2_3, "2/3" },
{ 34, FEC_3_4, "3/4" },
{ 35, FEC_3_5, "3/5" },
{ 45, FEC_4_5, "4/5" },
{ 56, FEC_5_6, "5/6" },
{ 67, FEC_6_7, "6/7" },
{ 78, FEC_7_8, "7/8" },
{ 89, FEC_8_9, "8/9" },
{ 910, FEC_9_10, "9/10" },
{ 999, FEC_AUTO, trNOOP("auto") },
{ -1, 0, NULL }
};
const tDvbParameterMap ModulationValues[] = {
{ 16, QAM_16, "QAM16" },
{ 32, QAM_32, "QAM32" },
{ 64, QAM_64, "QAM64" },
{ 128, QAM_128, "QAM128" },
{ 256, QAM_256, "QAM256" },
{ 2, QPSK, "QPSK" },
{ 5, PSK_8, "8PSK" },
{ 6, APSK_16, "16APSK" },
{ 7, APSK_32, "32APSK" },
{ 10, VSB_8, "VSB8" },
{ 11, VSB_16, "VSB16" },
{ 12, DQPSK, "DQPSK" },
{ 999, QAM_AUTO, trNOOP("auto") },
{ -1, 0, NULL }
};
#define DVB_SYSTEM_1 0 // see also nit.c
#define DVB_SYSTEM_2 1
const tDvbParameterMap SystemValuesSat[] = {
{ 0, DVB_SYSTEM_1, "DVB-S" },
{ 1, DVB_SYSTEM_2, "DVB-S2" },
{ -1, 0, NULL }
};
const tDvbParameterMap SystemValuesTerr[] = {
{ 0, DVB_SYSTEM_1, "DVB-T" },
{ 1, DVB_SYSTEM_2, "DVB-T2" },
{ -1, 0, NULL }
};
const tDvbParameterMap TransmissionValues[] = {
{ 1, TRANSMISSION_MODE_1K, "1K" },
{ 2, TRANSMISSION_MODE_2K, "2K" },
{ 4, TRANSMISSION_MODE_4K, "4K" },
{ 8, TRANSMISSION_MODE_8K, "8K" },
{ 16, TRANSMISSION_MODE_16K, "16K" },
{ 32, TRANSMISSION_MODE_32K, "32K" },
{ 999, TRANSMISSION_MODE_AUTO, trNOOP("auto") },
{ -1, 0, NULL }
};
const tDvbParameterMap GuardValues[] = {
{ 4, GUARD_INTERVAL_1_4, "1/4" },
{ 8, GUARD_INTERVAL_1_8, "1/8" },
{ 16, GUARD_INTERVAL_1_16, "1/16" },
{ 32, GUARD_INTERVAL_1_32, "1/32" },
{ 128, GUARD_INTERVAL_1_128, "1/128" },
{ 19128, GUARD_INTERVAL_19_128, "19/128" },
{ 19256, GUARD_INTERVAL_19_256, "19/256" },
{ 999, GUARD_INTERVAL_AUTO, trNOOP("auto") },
{ -1, 0, NULL }
};
const tDvbParameterMap HierarchyValues[] = {
{ 0, HIERARCHY_NONE, trNOOP("none") },
{ 1, HIERARCHY_1, "1" },
{ 2, HIERARCHY_2, "2" },
{ 4, HIERARCHY_4, "4" },
{ 999, HIERARCHY_AUTO, trNOOP("auto") },
{ -1, 0, NULL }
};
const tDvbParameterMap RollOffValues[] = {
{ 0, ROLLOFF_AUTO, trNOOP("auto") },
{ 20, ROLLOFF_20, "0.20" },
{ 25, ROLLOFF_25, "0.25" },
{ 35, ROLLOFF_35, "0.35" },
{ -1, 0, NULL }
};
int UserIndex(int Value, const tDvbParameterMap *Map)
{
const tDvbParameterMap *map = Map;
while (map && map->userValue != -1) {
if (map->userValue == Value)
return map - Map;
map++;
}
return -1;
}
int DriverIndex(int Value, const tDvbParameterMap *Map)
{
const tDvbParameterMap *map = Map;
while (map && map->userValue != -1) {
if (map->driverValue == Value)
return map - Map;
map++;
}
return -1;
}
int MapToUser(int Value, const tDvbParameterMap *Map, const char **String)
{
int n = DriverIndex(Value, Map);
if (n >= 0) {
if (String)
*String = tr(Map[n].userString);
return Map[n].userValue;
}
return -1;
}
const char *MapToUserString(int Value, const tDvbParameterMap *Map)
{
int n = DriverIndex(Value, Map);
if (n >= 0)
return Map[n].userString;
return "???";
}
int MapToDriver(int Value, const tDvbParameterMap *Map)
{
int n = UserIndex(Value, Map);
if (n >= 0)
return Map[n].driverValue;
return -1;
}
// --- cDvbTransponderParameters ---------------------------------------------
cDvbTransponderParameters::cDvbTransponderParameters(const char *Parameters)
{
Parse(Parameters);
}
int cDvbTransponderParameters::PrintParameter(char *p, char Name, int Value) const
{
return Value >= 0 && Value != 999 ? sprintf(p, "%c%d", Name, Value) : 0;
}
cString cDvbTransponderParameters::ToString(char Type) const
{
#define ST(s) if (strchr(s, Type) && (strchr(s, '0' + system + 1) || strchr(s, '*')))
char buffer[64];
char *q = buffer;
*q = 0;
ST(" S *") q += sprintf(q, "%c", polarization);
ST(" T*") q += PrintParameter(q, 'B', MapToUser(bandwidth, BandwidthValues));
ST(" CST*") q += PrintParameter(q, 'C', MapToUser(coderateH, CoderateValues));
ST(" T*") q += PrintParameter(q, 'D', MapToUser(coderateL, CoderateValues));
ST(" T*") q += PrintParameter(q, 'G', MapToUser(guard, GuardValues));
ST("ACST*") q += PrintParameter(q, 'I', MapToUser(inversion, InversionValues));
ST("ACST*") q += PrintParameter(q, 'M', MapToUser(modulation, ModulationValues));
ST(" S 2") q += PrintParameter(q, 'N', MapToUser(pilot, PilotValues));
ST(" S 2") q += PrintParameter(q, 'O', MapToUser(rollOff, RollOffValues));
ST(" ST2") q += PrintParameter(q, 'P', streamId);
ST(" T2") q += PrintParameter(q, 'Q', t2systemId);
ST(" ST*") q += PrintParameter(q, 'S', MapToUser(system, SystemValuesSat)); // we only need the numerical value, so Sat or Terr doesn't matter
ST(" T*") q += PrintParameter(q, 'T', MapToUser(transmission, TransmissionValues));
ST(" T2") q += PrintParameter(q, 'X', sisoMiso);
ST(" T*") q += PrintParameter(q, 'Y', MapToUser(hierarchy, HierarchyValues));
return buffer;
}
const char *cDvbTransponderParameters::ParseParameter(const char *s, int &Value, const tDvbParameterMap *Map)
{
if (*++s) {
char *p = NULL;
errno = 0;
int n = strtol(s, &p, 10);
if (!errno && p != s) {
Value = Map ? MapToDriver(n, Map) : n;
if (Value >= 0)
return p;
}
}
esyslog("ERROR: invalid value for parameter '%c'", *(s - 1));
return NULL;
}
bool cDvbTransponderParameters::Parse(const char *s)
{
polarization = 0;
inversion = INVERSION_AUTO;
bandwidth = BANDWIDTH_HZ_AUTO;
coderateH = FEC_AUTO;
coderateL = FEC_AUTO;
modulation = QAM_AUTO;
system = DVB_SYSTEM_1;
transmission = TRANSMISSION_MODE_AUTO;
guard = GUARD_INTERVAL_AUTO;
hierarchy = HIERARCHY_AUTO;
rollOff = ROLLOFF_AUTO;
streamId = 0;
t2systemId = 0;
sisoMiso = 0;
pilot = PILOT_AUTO;
while (s && *s) {
switch (toupper(*s)) {
case 'B': s = ParseParameter(s, bandwidth, BandwidthValues); break;
case 'C': s = ParseParameter(s, coderateH, CoderateValues); break;
case 'D': s = ParseParameter(s, coderateL, CoderateValues); break;
case 'G': s = ParseParameter(s, guard, GuardValues); break;
case 'H': polarization = 'H'; s++; break;
case 'I': s = ParseParameter(s, inversion, InversionValues); break;
case 'L': polarization = 'L'; s++; break;
case 'M': s = ParseParameter(s, modulation, ModulationValues); break;
case 'N': s = ParseParameter(s, pilot, PilotValues); break;
case 'O': s = ParseParameter(s, rollOff, RollOffValues); break;
case 'P': s = ParseParameter(s, streamId); break;
case 'Q': s = ParseParameter(s, t2systemId); break;
case 'R': polarization = 'R'; s++; break;
case 'S': s = ParseParameter(s, system, SystemValuesSat); break; // we only need the numerical value, so Sat or Terr doesn't matter
case 'T': s = ParseParameter(s, transmission, TransmissionValues); break;
case 'V': polarization = 'V'; s++; break;
case 'X': s = ParseParameter(s, sisoMiso); break;
case 'Y': s = ParseParameter(s, hierarchy, HierarchyValues); break;
default: esyslog("ERROR: unknown parameter key '%c'", *s);
return false;
}
}
return true;
}
// --- cDvbFrontend ----------------------------------------------------------
const char *DeliverySystemNames[] = {
"???",
"DVB-C",
"DVB-C",
"DVB-T",
"DSS",
"DVB-S",
"DVB-S2",
"DVB-H",
"ISDBT",
"ISDBS",
"ISDBC",
"ATSC",
"ATSCMH",
"DTMB",
"CMMB",
"DAB",
"DVB-T2",
"TURBO",
"DVB-C",
"DVB-C2",
NULL
};
static const int DeliverySystemNamesMax = sizeof(DeliverySystemNames) / sizeof(DeliverySystemNames[0]) - 2; // -1 to get the maximum allowed index & -1 for the NULL => -2
static const char *GetDeliverySystemName(int Index)
{
if (Index > DeliverySystemNamesMax)
Index = 0;
return DeliverySystemNames[Index];
};
#define MAXFRONTENDCMDS 16
#define SETCMD(c, d) { Props[CmdSeq.num].cmd = (c);\
Props[CmdSeq.num].u.data = (d);\
if (CmdSeq.num++ > MAXFRONTENDCMDS) {\
esyslog("ERROR: too many tuning commands on frontend %d/%d", adapter, frontend);\
return false;\
}\
}
class cDvbFrontend {
private:
int adapter, frontend;
int fd_frontend;
uint32_t subsystemId;
dvb_frontend_info frontendInfo;
cVector<int> deliverySystems;
int numModulations;
bool QueryDeliverySystems(void);
public:
cDvbFrontend(int Adapter, int Frontend);
~cDvbFrontend();
int Open(void);
void Close(void);
const char *FrontendName(void) { return frontendInfo.name; }
bool ProvidesDeliverySystem(int DeliverySystem) const;
bool ProvidesModulation(int System, int StreamId, int Modulation) const;
int NumDeliverySystems(void) const { return deliverySystems.Size(); }
int NumModulations(void) const { return numModulations; }
uint32_t SubsystemId(void) const { return subsystemId; }
};
cDvbFrontend::cDvbFrontend(int Adapter, int Frontend)
{
adapter = Adapter;
frontend = Frontend;
fd_frontend = -1;
subsystemId = cDvbDeviceProbe::GetSubsystemId(adapter, frontend);
memset(&frontendInfo, 0, sizeof(frontendInfo));
strn0cpy(frontendInfo.name, "???", sizeof(frontendInfo.name));
numModulations = 0;
Open();
QueryDeliverySystems();
Close();
}
cDvbFrontend::~cDvbFrontend()
{
Close();
}
int cDvbFrontend::Open(void)
{
Close();
fd_frontend = DvbOpen(DEV_DVB_FRONTEND, adapter, frontend, O_RDWR | O_NONBLOCK, true);
return fd_frontend;
}
void cDvbFrontend::Close(void)
{
if (fd_frontend >= 0) {
if (close(fd_frontend) != 0)
esyslog("ERROR: frontend %d/%d", adapter, frontend);
fd_frontend = -1;
}
}
bool cDvbFrontend::ProvidesDeliverySystem(int DeliverySystem) const
{
for (int i = 0; i < deliverySystems.Size(); i++) {
if (deliverySystems[i] == DeliverySystem)
return true;
}
return false;
}
bool cDvbFrontend::ProvidesModulation(int System, int StreamId, int Modulation) const
{
if (StreamId != 0 && !(frontendInfo.caps & FE_CAN_MULTISTREAM))
return false;
if (Modulation == QPSK && !(frontendInfo.caps & FE_CAN_QPSK) ||
Modulation == QAM_16 && !(frontendInfo.caps & FE_CAN_QAM_16) ||
Modulation == QAM_32 && !(frontendInfo.caps & FE_CAN_QAM_32) ||
Modulation == QAM_64 && !(frontendInfo.caps & FE_CAN_QAM_64) ||
Modulation == QAM_128 && !(frontendInfo.caps & FE_CAN_QAM_128) ||
Modulation == QAM_256 && !(frontendInfo.caps & FE_CAN_QAM_256) ||
Modulation == QAM_AUTO && !(frontendInfo.caps & FE_CAN_QAM_AUTO) ||
Modulation == VSB_8 && !(frontendInfo.caps & FE_CAN_8VSB) ||
Modulation == VSB_16 && !(frontendInfo.caps & FE_CAN_16VSB) ||
Modulation == PSK_8 && !(frontendInfo.caps & FE_CAN_TURBO_FEC) && System == SYS_DVBS) // "turbo fec" is a non standard FEC used by North American broadcasters - this is a best guess to de
return false;
return true;
}
bool cDvbFrontend::QueryDeliverySystems(void)
{
deliverySystems.Clear();
numModulations = 0;
if (ioctl(fd_frontend, FE_GET_INFO, &frontendInfo) < 0) {
LOG_ERROR;
return false;
}
dtv_property Props[1];
dtv_properties CmdSeq;
// Determine the version of the running DVB API:
if (!DvbApiVersion) {
memset(&Props, 0, sizeof(Props));
memset(&CmdSeq, 0, sizeof(CmdSeq));
CmdSeq.props = Props;
SETCMD(DTV_API_VERSION, 0);
if (ioctl(fd_frontend, FE_GET_PROPERTY, &CmdSeq) != 0) {
LOG_ERROR;
return false;
}
DvbApiVersion = Props[0].u.data;
isyslog("DVB API version is 0x%04X (VDR was built with 0x%04X)", DvbApiVersion, DVBAPIVERSION);
}
// Determine the types of delivery systems this device provides:
bool LegacyMode = true;
if (DvbApiVersion >= 0x0505) {
memset(&Props, 0, sizeof(Props));
memset(&CmdSeq, 0, sizeof(CmdSeq));
CmdSeq.props = Props;
SETCMD(DTV_ENUM_DELSYS, 0);
int Result = ioctl(fd_frontend, FE_GET_PROPERTY, &CmdSeq);
if (Result == 0) {
for (uint i = 0; i < Props[0].u.buffer.len; i++) {
// activate this line to simulate a multi-frontend device if you only have a single-frontend device with DVB-S and DVB-S2:
//if (frontend == 0 && Props[0].u.buffer.data[i] != SYS_DVBS || frontend == 1 && Props[0].u.buffer.data[i] != SYS_DVBS2)
deliverySystems.Append(Props[0].u.buffer.data[i]);
}
LegacyMode = false;
}
else {
esyslog("ERROR: can't query delivery systems on frontend %d/%d - falling back to legacy mode", adapter, frontend);
}
}
if (LegacyMode) {
// Legacy mode (DVB-API < 5.5):
switch (frontendInfo.type) {
case FE_QPSK: deliverySystems.Append(SYS_DVBS);
if (frontendInfo.caps & FE_CAN_2G_MODULATION)
deliverySystems.Append(SYS_DVBS2);
break;
case FE_OFDM: deliverySystems.Append(SYS_DVBT);
if (frontendInfo.caps & FE_CAN_2G_MODULATION)
deliverySystems.Append(SYS_DVBT2);
break;
case FE_QAM: deliverySystems.Append(SYS_DVBC_ANNEX_AC); break;
case FE_ATSC: deliverySystems.Append(SYS_ATSC); break;
default: esyslog("ERROR: unknown frontend type %d on frontend %d/%d", frontendInfo.type, adapter, frontend);
}
}
if (deliverySystems.Size() > 0) {
cString ds("");
for (int i = 0; i < deliverySystems.Size(); i++)
ds = cString::sprintf("%s%s%s", *ds, i ? "," : "", GetDeliverySystemName(deliverySystems[i]));
cString ms("");
if (frontendInfo.caps & FE_CAN_QPSK) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QPSK, ModulationValues)); }
if (frontendInfo.caps & FE_CAN_QAM_16) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_16, ModulationValues)); }
if (frontendInfo.caps & FE_CAN_QAM_32) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_32, ModulationValues)); }
if (frontendInfo.caps & FE_CAN_QAM_64) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_64, ModulationValues)); }
if (frontendInfo.caps & FE_CAN_QAM_128) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_128, ModulationValues)); }
if (frontendInfo.caps & FE_CAN_QAM_256) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_256, ModulationValues)); }
if (frontendInfo.caps & FE_CAN_8VSB) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(VSB_8, ModulationValues)); }
if (frontendInfo.caps & FE_CAN_16VSB) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(VSB_16, ModulationValues)); }
if (frontendInfo.caps & FE_CAN_TURBO_FEC) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", "TURBO_FEC"); }
if (!**ms)
ms = "unknown modulations";
isyslog("frontend %d/%d provides %s with %s (\"%s\")", adapter, frontend, *ds, *ms, frontendInfo.name);
return true;
}
else
esyslog("ERROR: frontend %d/%d doesn't provide any delivery systems", adapter, frontend);
return false;
}
// --- cDvbTuner -------------------------------------------------------------
#define TUNER_POLL_TIMEOUT 10 // ms
static int GetRequiredDeliverySystem(const cChannel *Channel, const cDvbTransponderParameters *Dtp)
{
int ds = SYS_UNDEFINED;
if (Channel->IsAtsc())
ds = SYS_ATSC;
else if (Channel->IsCable())
ds = SYS_DVBC_ANNEX_AC;
else if (Channel->IsSat())
ds = Dtp->System() == DVB_SYSTEM_1 ? SYS_DVBS : SYS_DVBS2;
else if (Channel->IsTerr())
ds = Dtp->System() == DVB_SYSTEM_1 ? SYS_DVBT : SYS_DVBT2;
else
esyslog("ERROR: can't determine frontend type for channel %d (%s)", Channel->Number(), Channel->Name());
return ds;
}
class cDvbTuner : public cThread {
private:
static cMutex bondMutex;
enum eTunerStatus { tsIdle, tsSet, tsPositioning, tsTuned, tsLocked };
int frontendType;
const cDvbDevice *device;
mutable int fd_frontend;
int adapter;
mutable int frontend;
cVector<cDvbFrontend *> dvbFrontends;
mutable cDvbFrontend *dvbFrontend;
int numDeliverySystems;
int numModulations;
int tuneTimeout;
int lockTimeout;
time_t lastTimeoutReport;
mutable uint32_t lastUncValue;
mutable uint32_t lastUncDelta;
mutable time_t lastUncChange;
cChannel channel;
mutable const cDiseqc *lastDiseqc;
int diseqcOffset;
mutable int lastSource;
cPositioner *positioner;
const cScr *scr;
mutable bool lnbPowerTurnedOn;
eTunerStatus tunerStatus;
mutable cMutex mutex;
cCondVar locked;
cCondVar newSet;
cDvbTuner *bondedTuner;
bool bondedMaster;
cString GetBondingParams(const cChannel *Channel = NULL) const;
cDvbTuner *GetBondedMaster(void);
bool IsBondedMaster(void) const { return !bondedTuner || bondedMaster; }
void ClearEventQueue(void) const;
bool GetFrontendStatus(fe_status_t &Status) const;
cPositioner *GetPositioner(void);
void ExecuteDiseqc(const cDiseqc *Diseqc, int *Frequency);
void ResetToneAndVoltage(void);
bool SetFrontend(void);
virtual void Action(void);
public:
cDvbTuner(const cDvbDevice *Device, int Adapter, int Frontend);
virtual ~cDvbTuner();
bool ProvidesDeliverySystem(int DeliverySystem) const;
bool ProvidesModulation(int System, int StreamId, int Modulation) const;
bool ProvidesFrontend(const cChannel *Channel, bool Activate = false) const;
int Frontend(void) const { return frontend; }
int FrontendType(void) const { return frontendType; }
const char *FrontendName(void) { return dvbFrontend->FrontendName(); }
int NumProvidedSystems(void) const { return numDeliverySystems + numModulations; }
bool Bond(cDvbTuner *Tuner);
void UnBond(void);
bool BondingOk(const cChannel *Channel, bool ConsiderOccupied = false) const;
const cChannel *GetTransponder(void) const { return &channel; }
uint32_t SubsystemId(void) const { return dvbFrontend->SubsystemId(); }
bool IsTunedTo(const cChannel *Channel) const;
void SetChannel(const cChannel *Channel);
bool Locked(int TimeoutMs = 0);
const cPositioner *Positioner(void) const { return positioner; }
bool GetSignalStats(int &Valid, double *Strength = NULL, double *Cnr = NULL, double *BerPre = NULL, double *BerPost = NULL, double *Per = NULL, int *Status = NULL) const;
int GetSignalStrength(void) const;
int GetSignalQuality(void) const;
void SetPowerSaveMode(bool On);
};
cMutex cDvbTuner::bondMutex;
cDvbTuner::cDvbTuner(const cDvbDevice *Device, int Adapter, int Frontend)
{
frontendType = SYS_UNDEFINED;
device = Device;
fd_frontend = -1;
adapter = Adapter;
frontend = Frontend;
dvbFrontend = NULL;
tuneTimeout = 0;
lockTimeout = 0;
lastTimeoutReport = 0;
lastUncValue = 0;
lastUncDelta = 0;
lastUncChange = 0;
lastDiseqc = NULL;
diseqcOffset = 0;
lastSource = 0;
positioner = NULL;
scr = NULL;
lnbPowerTurnedOn = false;
tunerStatus = tsIdle;
bondedTuner = NULL;
bondedMaster = false;
cDvbFrontend *fe = new cDvbFrontend(adapter, frontend);
dvbFrontends.Append(fe);
numDeliverySystems = fe->NumDeliverySystems();
numModulations = fe->NumModulations();
cString FrontendNumbers = cString::sprintf("%d", frontend);
// Check for multiple frontends:
if (frontend == 0) {
for (int i = 1; ; i++) {
if (access(DvbName(DEV_DVB_FRONTEND, adapter, i), F_OK) == 0) {
if (access(DvbName(DEV_DVB_DEMUX, adapter, i), F_OK) != 0) {
fe = new cDvbFrontend(adapter, i);
dvbFrontends.Append(fe);
numDeliverySystems += fe->NumDeliverySystems();
//numModulations += fe->NumModulations(); // looks like in multi frontend devices all frontends report the same modulations
FrontendNumbers = cString::sprintf("%s+%d", *FrontendNumbers, i);
}
}
else
break;
}
}
// Open default frontend:
dvbFrontend = dvbFrontends[0];
fd_frontend = dvbFrontend->Open();
SetDescription("frontend %d/%s tuner", adapter, *FrontendNumbers);
Start();
}
cDvbTuner::~cDvbTuner()
{
tunerStatus = tsIdle;
newSet.Broadcast();
locked.Broadcast();
Cancel(3);
UnBond();
/* looks like this irritates the SCR switch, so let's leave it out for now
if (lastDiseqc && lastDiseqc->IsScr()) {
unsigned int Frequency = 0;
ExecuteDiseqc(lastDiseqc, &Frequency);
}
*/
for (int i = 0; i < dvbFrontends.Size(); i++)
delete dvbFrontends[i];
}
bool cDvbTuner::ProvidesDeliverySystem(int DeliverySystem) const
{
for (int i = 0; i < dvbFrontends.Size(); i++) {
if (dvbFrontends[i]->ProvidesDeliverySystem(DeliverySystem))
return true;
}
return false;
}
bool cDvbTuner::ProvidesModulation(int System, int StreamId, int Modulation) const
{
for (int i = 0; i < dvbFrontends.Size(); i++) {
if (dvbFrontends[i]->ProvidesModulation(System, StreamId, Modulation))
return true;
}
return false;
}
bool cDvbTuner::ProvidesFrontend(const cChannel *Channel, bool Activate) const
{
cDvbTransponderParameters dtp(Channel->Parameters());
int DeliverySystem = GetRequiredDeliverySystem(Channel, &dtp);
for (int i = 0; i < dvbFrontends.Size(); i++) {
if (dvbFrontends[i]->ProvidesDeliverySystem(DeliverySystem) && dvbFrontends[i]->ProvidesModulation(dtp.System(), dtp.StreamId(), dtp.Modulation())) {
if (Activate && dvbFrontend != dvbFrontends[i]) {
cMutexLock MutexLock(&mutex);
dvbFrontend->Close();
dvbFrontend = dvbFrontends[i];
fd_frontend = dvbFrontend->Open();
frontend = i;
dsyslog("using frontend %d/%d", adapter, frontend);
lastDiseqc = NULL;
lastSource = 0;
lastUncValue = 0;
lastUncDelta = 0;
lastUncChange = 0;
lnbPowerTurnedOn = false;
}
return true;
}
}
return false;
}
bool cDvbTuner::Bond(cDvbTuner *Tuner)
{
cMutexLock MutexLock(&bondMutex);
if (!bondedTuner) {
ResetToneAndVoltage();
bondedMaster = false; // makes sure we don't disturb an existing master
bondedTuner = Tuner->bondedTuner ? Tuner->bondedTuner : Tuner;
Tuner->bondedTuner = this;
dsyslog("tuner %d/%d bonded with tuner %d/%d", adapter, frontend, bondedTuner->adapter, bondedTuner->frontend);
return true;
}
else
esyslog("ERROR: tuner %d/%d already bonded with tuner %d/%d, can't bond with tuner %d/%d", adapter, frontend, bondedTuner->adapter, bondedTuner->frontend, Tuner->adapter, Tuner->frontend);
return false;
}
void cDvbTuner::UnBond(void)
{
cMutexLock MutexLock(&bondMutex);
if (cDvbTuner *t = bondedTuner) {
dsyslog("tuner %d/%d unbonded from tuner %d/%d", adapter, frontend, bondedTuner->adapter, bondedTuner->frontend);
while (t->bondedTuner != this)
t = t->bondedTuner;
if (t == bondedTuner)
t->bondedTuner = NULL;
else
t->bondedTuner = bondedTuner;
bondedMaster = false; // another one will automatically become master whenever necessary
bondedTuner = NULL;
}
}
cString cDvbTuner::GetBondingParams(const cChannel *Channel) const
{
if (!Channel)
Channel = &channel;
cDvbTransponderParameters dtp(Channel->Parameters());
if (Setup.DiSEqC) {
if (const cDiseqc *diseqc = Diseqcs.Get(device->DeviceNumber() + 1, Channel->Source(), Channel->Frequency(), dtp.Polarization(), NULL))
return diseqc->Commands();
}
else {
bool ToneOff = Channel->Frequency() < Setup.LnbSLOF;
bool VoltOff = dtp.Polarization() == 'V' || dtp.Polarization() == 'R';
return cString::sprintf("%c %c", ToneOff ? 't' : 'T', VoltOff ? 'v' : 'V');
}
return "";
}
bool cDvbTuner::BondingOk(const cChannel *Channel, bool ConsiderOccupied) const
{
cMutexLock MutexLock(&bondMutex);
if (cDvbTuner *t = bondedTuner) {
cString BondingParams = GetBondingParams(Channel);
do {
if (t->device->Priority() > IDLEPRIORITY || ConsiderOccupied && t->device->Occupied()) {
if (strcmp(BondingParams, t->GetBondedMaster()->GetBondingParams()) != 0)
return false;
}
t = t->bondedTuner;
} while (t != bondedTuner);
}
return true;
}
cDvbTuner *cDvbTuner::GetBondedMaster(void)
{
if (!bondedTuner)
return this; // an unbonded tuner is always "master"
cMutexLock MutexLock(&bondMutex);
if (bondedMaster)
return this;
// This tuner is bonded, but it's not the master, so let's see if there is a master at all:
if (cDvbTuner *t = bondedTuner) {
while (t != this) {
if (t->bondedMaster)
return t;
t = t->bondedTuner;
}
}
// None of the other bonded tuners is master, so make this one the master:
bondedMaster = true;
dsyslog("tuner %d/%d is now bonded master", adapter, frontend);
return this;
}
bool cDvbTuner::IsTunedTo(const cChannel *Channel) const
{
if (tunerStatus == tsIdle)
return false; // not tuned to
if (channel.Source() != Channel->Source() || channel.Transponder() != Channel->Transponder() || channel.Srate() != Channel->Srate())
return false; // sufficient mismatch
// Polarization is already checked as part of the Transponder.
return strcmp(channel.Parameters(), Channel->Parameters()) == 0;
}
void cDvbTuner::SetChannel(const cChannel *Channel)
{
if (Channel) {
if (bondedTuner) {
cMutexLock MutexLock(&bondMutex);
cDvbTuner *BondedMaster = GetBondedMaster();
if (BondedMaster == this) {
if (strcmp(GetBondingParams(Channel), GetBondingParams()) != 0) {
// switching to a completely different band, so set all others to idle:
for (cDvbTuner *t = bondedTuner; t && t != this; t = t->bondedTuner)
t->SetChannel(NULL);
}
}
else if (strcmp(GetBondingParams(Channel), BondedMaster->GetBondingParams()) != 0)
BondedMaster->SetChannel(Channel);
}
cMutexLock MutexLock(&mutex);
if (!IsTunedTo(Channel))
tunerStatus = tsSet;
diseqcOffset = 0;
channel = *Channel;
lastTimeoutReport = 0;
newSet.Broadcast();
}
else {
cMutexLock MutexLock(&mutex);
tunerStatus = tsIdle;
ResetToneAndVoltage();
}
if (bondedTuner && device->IsPrimaryDevice())
cDevice::PrimaryDevice()->DelLivePids(); // 'device' is const, so we must do it this way
}
bool cDvbTuner::Locked(int TimeoutMs)
{
bool isLocked = (tunerStatus >= tsLocked);
if (isLocked || !TimeoutMs)
return isLocked;
cMutexLock MutexLock(&mutex);
if (TimeoutMs && tunerStatus < tsLocked)
locked.TimedWait(mutex, TimeoutMs);
return tunerStatus >= tsLocked;
}
void cDvbTuner::ClearEventQueue(void) const
{
cPoller Poller(fd_frontend);
if (Poller.Poll(TUNER_POLL_TIMEOUT)) {
dvb_frontend_event Event;
while (ioctl(fd_frontend, FE_GET_EVENT, &Event) == 0)
; // just to clear the event queue - we'll read the actual status below
}
}
bool cDvbTuner::GetFrontendStatus(fe_status_t &Status) const
{
if (fd_frontend == -1)
return false;
ClearEventQueue();
Status = (fe_status_t)0; // initialize here to fix buggy drivers
while (1) {
if (ioctl(fd_frontend, FE_READ_STATUS, &Status) != -1)
return true;
if (errno != EINTR)
break;
}
return false;
}
//#define DEBUG_SIGNALSTATS
//#define DEBUG_SIGNALSTRENGTH
//#define DEBUG_SIGNALQUALITY
bool cDvbTuner::GetSignalStats(int &Valid, double *Strength, double *Cnr, double *BerPre, double *BerPost, double *Per, int *Status) const
{
if (fd_frontend == -1)
return false;
ClearEventQueue();
fe_status_t FeStatus = (fe_status_t)0; // initialize here to fix buggy drivers
dtv_property Props[MAXFRONTENDCMDS];
dtv_properties CmdSeq;
memset(&Props, 0, sizeof(Props));
memset(&CmdSeq, 0, sizeof(CmdSeq));
CmdSeq.props = Props;
Valid = DTV_STAT_VALID_NONE;
if (ioctl(fd_frontend, FE_READ_STATUS, &FeStatus) != 0) {
esyslog("ERROR: frontend %d/%d: %m (%s:%d)", adapter, frontend, __FILE__, __LINE__);
return false;
}
if (Status) {
*Status = DTV_STAT_HAS_NONE;
if (FeStatus & FE_HAS_SIGNAL) *Status |= DTV_STAT_HAS_SIGNAL;
if (FeStatus & FE_HAS_CARRIER) *Status |= DTV_STAT_HAS_CARRIER;
if (FeStatus & FE_HAS_VITERBI) *Status |= DTV_STAT_HAS_VITERBI;
if (FeStatus & FE_HAS_SYNC) *Status |= DTV_STAT_HAS_SYNC;
if (FeStatus & FE_HAS_LOCK) *Status |= DTV_STAT_HAS_LOCK;
Valid |= DTV_STAT_VALID_STATUS;
}
if (Strength) SETCMD(DTV_STAT_SIGNAL_STRENGTH, 0);
if (Cnr) SETCMD(DTV_STAT_CNR, 0);
if (BerPre) { SETCMD(DTV_STAT_PRE_ERROR_BIT_COUNT, 0);
SETCMD(DTV_STAT_PRE_TOTAL_BIT_COUNT, 0); }
if (BerPost) { SETCMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0);
SETCMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0); }
if (Per) { SETCMD(DTV_STAT_ERROR_BLOCK_COUNT, 0);
SETCMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0); }
if (CmdSeq.num && ioctl(fd_frontend, FE_GET_PROPERTY, &CmdSeq) != 0) {
esyslog("ERROR: frontend %d/%d: %m (%s:%d)", adapter, frontend, __FILE__, __LINE__);
return false;
}
int i = 0;
if (Strength) {
if (Props[i].u.st.len > 0) {
switch (Props[i].u.st.stat[0].scale) {
case FE_SCALE_DECIBEL: *Strength = double(Props[i].u.st.stat[0].svalue) / 1000;
Valid |= DTV_STAT_VALID_STRENGTH;
break;
default: ;
}
}
i++;
}
if (Cnr) {
if (Props[i].u.st.len > 0) {
switch (Props[i].u.st.stat[0].scale) {
case FE_SCALE_DECIBEL: *Cnr = double(Props[i].u.st.stat[0].svalue) / 1000;
Valid |= DTV_STAT_VALID_CNR;
break;
default: ;
}
}
i++;
}
if (BerPre) {
if (Props[i].u.st.len > 0 && Props[i + 1].u.st.len > 0) {
if (Props[i].u.st.stat[0].scale == FE_SCALE_COUNTER && Props[i + 1].u.st.stat[0].scale == FE_SCALE_COUNTER) {
uint64_t ebc = Props[i].u.st.stat[0].uvalue; // error bit count
uint64_t tbc = Props[i + 1].u.st.stat[0].uvalue; // total bit count
if (tbc > 0) {
*BerPre = double(ebc) / tbc;
Valid |= DTV_STAT_VALID_BERPRE;
}
}
}
i += 2;
}
if (BerPost) {
if (Props[i].u.st.len > 0 && Props[i + 1].u.st.len > 0) {
if (Props[i].u.st.stat[0].scale == FE_SCALE_COUNTER && Props[i + 1].u.st.stat[0].scale == FE_SCALE_COUNTER) {
uint64_t ebc = Props[i].u.st.stat[0].uvalue; // error bit count
uint64_t tbc = Props[i + 1].u.st.stat[0].uvalue; // total bit count
if (tbc > 0) {
*BerPost = double(ebc) / tbc;
Valid |= DTV_STAT_VALID_BERPOST;
}
}
}
i += 2;
}
if (Per) {
if (Props[i].u.st.len > 0 && Props[i + 1].u.st.len > 0) {
if (Props[i].u.st.stat[0].scale == FE_SCALE_COUNTER && Props[i + 1].u.st.stat[0].scale == FE_SCALE_COUNTER) {
uint64_t ebc = Props[i].u.st.stat[0].uvalue; // error block count
uint64_t tbc = Props[i + 1].u.st.stat[0].uvalue; // total block count
if (tbc > 0) {
*Per = double(ebc) / tbc;
Valid |= DTV_STAT_VALID_PER;
}
}
}
i += 2;
}
#ifdef DEBUG_SIGNALSTATS
fprintf(stderr, "FE %d/%d: API5 %04X", adapter, frontend, Valid);
if ((Valid & DTV_STAT_VALID_STATUS) != 0) fprintf(stderr, " STAT=%04X", *Status);
if ((Valid & DTV_STAT_VALID_STRENGTH) != 0) fprintf(stderr, " STR=%1.1fdBm", *Strength);
if ((Valid & DTV_STAT_VALID_CNR) != 0) fprintf(stderr, " CNR=%1.1fdB", *Cnr);
if ((Valid & DTV_STAT_VALID_BERPRE) != 0) fprintf(stderr, " BERPRE=%1.1e", *BerPre);
if ((Valid & DTV_STAT_VALID_BERPOST) != 0) fprintf(stderr, " BERPOST=%1.1e", *BerPost);
if ((Valid & DTV_STAT_VALID_PER) != 0) fprintf(stderr, " PER=%1.1e", *Per);
fprintf(stderr, "\n");
#endif
return Valid != DTV_STAT_VALID_NONE;
}
int dB1000toPercent(int dB1000, int Low, int High)
{
// Convert the given value, which is in 1/1000 dBm, to a percentage in the
// range 0..100. Anything below Low is considered 0%, and anything above
// High counts as 100%.
if (dB1000 < Low)