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vdr/dvbdevice.c
2010-01-04 14:16:11 +01:00

718 lines
22 KiB
C

/*
* 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 2.24 2010/01/04 14:06:24 kls Exp $
*/
#include "dvbdevice.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"
#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
// --- cDvbTuner -------------------------------------------------------------
class cDvbTuner : public cThread {
private:
enum eTunerStatus { tsIdle, tsSet, tsTuned, tsLocked };
int fd_frontend;
int adapter, frontend;
int tuneTimeout;
int lockTimeout;
time_t lastTimeoutReport;
fe_delivery_system frontendType;
cChannel channel;
const char *diseqcCommands;
eTunerStatus tunerStatus;
cMutex mutex;
cCondVar locked;
cCondVar newSet;
bool GetFrontendStatus(fe_status_t &Status, int TimeoutMs = 0);
bool SetFrontend(void);
virtual void Action(void);
public:
cDvbTuner(int Fd_Frontend, int Adapter, int Frontend, fe_delivery_system FrontendType);
virtual ~cDvbTuner();
bool IsTunedTo(const cChannel *Channel) const;
void Set(const cChannel *Channel);
bool Locked(int TimeoutMs = 0);
};
cDvbTuner::cDvbTuner(int Fd_Frontend, int Adapter, int Frontend, fe_delivery_system FrontendType)
{
fd_frontend = Fd_Frontend;
adapter = Adapter;
frontend = Frontend;
frontendType = FrontendType;
tuneTimeout = 0;
lockTimeout = 0;
lastTimeoutReport = 0;
diseqcCommands = NULL;
tunerStatus = tsIdle;
if (frontendType == SYS_DVBS || frontendType == SYS_DVBS2)
CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_13)); // must explicitly turn on LNB power
SetDescription("tuner on frontend %d/%d", adapter, frontend);
Start();
}
cDvbTuner::~cDvbTuner()
{
tunerStatus = tsIdle;
newSet.Broadcast();
locked.Broadcast();
Cancel(3);
}
bool cDvbTuner::IsTunedTo(const cChannel *Channel) const
{
if (tunerStatus == tsIdle)
return false; // not tuned to
if (channel.Source() != Channel->Source() || channel.Transponder() != Channel->Transponder())
return false; // sufficient mismatch
char Type = **cSource::ToString(Channel->Source());
#define ST(s, p) if (strchr(s, Type)) if (channel.p() != Channel->p()) return false;
// Polarization is already checked as part of the Transponder.
ST(" T", Bandwidth);
ST("CST", CoderateH);
ST(" T", CoderateL);
ST(" T", Guard);
ST("CST", Inversion);
ST("CST", Modulation);
ST(" S ", RollOff);
ST(" S ", System);
ST("CS ", Srate);
ST(" T", Transmission);
ST(" T", Hierarchy);
return true;
}
void cDvbTuner::Set(const cChannel *Channel)
{
cMutexLock MutexLock(&mutex);
if (!IsTunedTo(Channel))
tunerStatus = tsSet;
channel = *Channel;
lastTimeoutReport = 0;
newSet.Broadcast();
}
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;
}
bool cDvbTuner::GetFrontendStatus(fe_status_t &Status, int TimeoutMs)
{
if (TimeoutMs) {
cPoller Poller(fd_frontend);
if (Poller.Poll(TimeoutMs)) {
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
}
}
while (1) {
if (ioctl(fd_frontend, FE_READ_STATUS, &Status) != -1)
return true;
if (errno != EINTR)
break;
}
return false;
}
static unsigned int FrequencyToHz(unsigned int f)
{
while (f && f < 1000000)
f *= 1000;
return f;
}
bool cDvbTuner::SetFrontend(void)
{
#define MAXFRONTENDCMDS 16
#define SETCMD(c, d) { Frontend[CmdSeq.num].cmd = (c);\
Frontend[CmdSeq.num].u.data = (d);\
if (CmdSeq.num++ > MAXFRONTENDCMDS) {\
esyslog("ERROR: too many tuning commands on frontend %d/%d", adapter, frontend);\
return false;\
}\
}
dtv_property Frontend[MAXFRONTENDCMDS];
memset(&Frontend, 0, sizeof(Frontend));
dtv_properties CmdSeq;
memset(&CmdSeq, 0, sizeof(CmdSeq));
CmdSeq.props = Frontend;
SETCMD(DTV_CLEAR, 0);
if (ioctl(fd_frontend, FE_SET_PROPERTY, &CmdSeq) < 0) {
esyslog("ERROR: frontend %d/%d: %m", adapter, frontend);
return false;
}
CmdSeq.num = 0;
if (frontendType == SYS_DVBS || frontendType == SYS_DVBS2) {
unsigned int frequency = channel.Frequency();
if (Setup.DiSEqC) {
cDiseqc *diseqc = Diseqcs.Get(channel.Source(), channel.Frequency(), channel.Polarization());
if (diseqc) {
if (diseqc->Commands() && (!diseqcCommands || strcmp(diseqcCommands, diseqc->Commands()) != 0)) {
cDiseqc::eDiseqcActions da;
for (char *CurrentAction = NULL; (da = diseqc->Execute(&CurrentAction)) != cDiseqc::daNone; ) {
switch (da) {
case cDiseqc::daNone: break;
case cDiseqc::daToneOff: CHECK(ioctl(fd_frontend, FE_SET_TONE, SEC_TONE_OFF)); break;
case cDiseqc::daToneOn: CHECK(ioctl(fd_frontend, FE_SET_TONE, SEC_TONE_ON)); break;
case cDiseqc::daVoltage13: CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_13)); break;
case cDiseqc::daVoltage18: CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_18)); break;
case cDiseqc::daMiniA: CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_BURST, SEC_MINI_A)); break;
case cDiseqc::daMiniB: CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_BURST, SEC_MINI_B)); break;
case cDiseqc::daCodes: {
int n = 0;
uchar *codes = diseqc->Codes(n);
if (codes) {
struct dvb_diseqc_master_cmd cmd;
cmd.msg_len = min(n, int(sizeof(cmd.msg)));
memcpy(cmd.msg, codes, cmd.msg_len);
CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_MASTER_CMD, &cmd));
}
}
break;
default: esyslog("ERROR: unknown diseqc command %d", da);
}
}
diseqcCommands = diseqc->Commands();
}
frequency -= diseqc->Lof();
}
else {
esyslog("ERROR: no DiSEqC parameters found for channel %d", channel.Number());
return false;
}
}
else {
int tone = SEC_TONE_OFF;
if (frequency < (unsigned int)Setup.LnbSLOF) {
frequency -= Setup.LnbFrequLo;
tone = SEC_TONE_OFF;
}
else {
frequency -= Setup.LnbFrequHi;
tone = SEC_TONE_ON;
}
int volt = (channel.Polarization() == 'v' || channel.Polarization() == 'V' || channel.Polarization() == 'r' || channel.Polarization() == 'R') ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18;
CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, volt));
CHECK(ioctl(fd_frontend, FE_SET_TONE, tone));
}
frequency = abs(frequency); // Allow for C-band, where the frequency is less than the LOF
// DVB-S/DVB-S2 (common parts)
SETCMD(DTV_DELIVERY_SYSTEM, channel.System());
SETCMD(DTV_FREQUENCY, frequency * 1000UL);
SETCMD(DTV_MODULATION, channel.Modulation());
SETCMD(DTV_SYMBOL_RATE, channel.Srate() * 1000UL);
SETCMD(DTV_INNER_FEC, channel.CoderateH());
SETCMD(DTV_INVERSION, channel.Inversion());
if (channel.System() == SYS_DVBS2) {
if (frontendType == SYS_DVBS2) {
// DVB-S2
SETCMD(DTV_PILOT, PILOT_AUTO);
SETCMD(DTV_ROLLOFF, channel.RollOff());
}
else {
esyslog("ERROR: frontend %d/%d doesn't provide DVB-S2", adapter, frontend);
return false;
}
}
else {
// DVB-S
SETCMD(DTV_ROLLOFF, ROLLOFF_35); // DVB-S always has a ROLLOFF of 0.35
}
tuneTimeout = DVBS_TUNE_TIMEOUT;
lockTimeout = DVBS_LOCK_TIMEOUT;
}
else if (frontendType == SYS_DVBC_ANNEX_AC || frontendType == SYS_DVBC_ANNEX_B) {
// DVB-C
SETCMD(DTV_DELIVERY_SYSTEM, frontendType);
SETCMD(DTV_FREQUENCY, FrequencyToHz(channel.Frequency()));
SETCMD(DTV_INVERSION, channel.Inversion());
SETCMD(DTV_SYMBOL_RATE, channel.Srate() * 1000UL);
SETCMD(DTV_INNER_FEC, channel.CoderateH());
SETCMD(DTV_MODULATION, channel.Modulation());
tuneTimeout = DVBC_TUNE_TIMEOUT;
lockTimeout = DVBC_LOCK_TIMEOUT;
}
else if (frontendType == SYS_DVBT) {
// DVB-T
SETCMD(DTV_DELIVERY_SYSTEM, frontendType);
SETCMD(DTV_FREQUENCY, FrequencyToHz(channel.Frequency()));
SETCMD(DTV_INVERSION, channel.Inversion());
SETCMD(DTV_BANDWIDTH_HZ, channel.Bandwidth());
SETCMD(DTV_CODE_RATE_HP, channel.CoderateH());
SETCMD(DTV_CODE_RATE_LP, channel.CoderateL());
SETCMD(DTV_MODULATION, channel.Modulation());
SETCMD(DTV_TRANSMISSION_MODE, channel.Transmission());
SETCMD(DTV_GUARD_INTERVAL, channel.Guard());
SETCMD(DTV_HIERARCHY, channel.Hierarchy());
tuneTimeout = DVBT_TUNE_TIMEOUT;
lockTimeout = DVBT_LOCK_TIMEOUT;
}
else {
esyslog("ERROR: attempt to set channel with unknown DVB frontend type");
return false;
}
SETCMD(DTV_TUNE, 0);
if (ioctl(fd_frontend, FE_SET_PROPERTY, &CmdSeq) < 0) {
esyslog("ERROR: frontend %d/%d: %m", adapter, frontend);
return false;
}
return true;
}
void cDvbTuner::Action(void)
{
cTimeMs Timer;
bool LostLock = false;
fe_status_t Status = (fe_status_t)0;
while (Running()) {
fe_status_t NewStatus;
if (GetFrontendStatus(NewStatus, 10))
Status = NewStatus;
cMutexLock MutexLock(&mutex);
switch (tunerStatus) {
case tsIdle:
break;
case tsSet:
tunerStatus = SetFrontend() ? tsTuned : tsIdle;
Timer.Set(tuneTimeout);
continue;
case tsTuned:
if (Timer.TimedOut()) {
tunerStatus = tsSet;
diseqcCommands = NULL;
if (time(NULL) - lastTimeoutReport > 60) { // let's not get too many of these
isyslog("frontend %d/%d timed out while tuning to channel %d, tp %d", adapter, frontend, channel.Number(), channel.Transponder());
lastTimeoutReport = time(NULL);
}
continue;
}
case tsLocked:
if (Status & FE_REINIT) {
tunerStatus = tsSet;
diseqcCommands = NULL;
isyslog("frontend %d/%d was reinitialized", adapter, frontend);
lastTimeoutReport = 0;
continue;
}
else if (Status & FE_HAS_LOCK) {
if (LostLock) {
isyslog("frontend %d/%d regained lock on channel %d, tp %d", adapter, frontend, channel.Number(), channel.Transponder());
LostLock = false;
}
tunerStatus = tsLocked;
locked.Broadcast();
lastTimeoutReport = 0;
}
else if (tunerStatus == tsLocked) {
LostLock = true;
isyslog("frontend %d/%d lost lock on channel %d, tp %d", adapter, frontend, channel.Number(), channel.Transponder());
tunerStatus = tsTuned;
Timer.Set(lockTimeout);
lastTimeoutReport = 0;
continue;
}
break;
default: esyslog("ERROR: unknown tuner status %d", tunerStatus);
}
if (tunerStatus != tsTuned)
newSet.TimedWait(mutex, 1000);
}
}
// --- cDvbDevice ------------------------------------------------------------
int cDvbDevice::setTransferModeForDolbyDigital = 1;
const char *DeliverySystems[] = {
"UNDEFINED",
"DVB-C",
"DVB-C",
"DVB-T",
"DSS",
"DVB-S",
"DVB-S2",
"DVB-H",
"ISDBT",
"ISDBS",
"ISDBC",
"ATSC",
"ATSCMH",
"DMBTH",
"CMMB",
"DAB",
NULL
};
cDvbDevice::cDvbDevice(int Adapter, int Frontend)
{
adapter = Adapter;
frontend = Frontend;
ciAdapter = NULL;
dvbTuner = NULL;
frontendType = SYS_UNDEFINED;
numProvidedSystems = 0;
// Devices that are present on all card types:
int fd_frontend = DvbOpen(DEV_DVB_FRONTEND, adapter, frontend, O_RDWR | O_NONBLOCK);
// Common Interface:
fd_ca = DvbOpen(DEV_DVB_CA, adapter, frontend, O_RDWR);
if (fd_ca >= 0)
ciAdapter = cDvbCiAdapter::CreateCiAdapter(this, fd_ca);
// The DVR device (will be opened and closed as needed):
fd_dvr = -1;
// We only check the devices that must be present - the others will be checked before accessing them://XXX
if (fd_frontend >= 0) {
if (ioctl(fd_frontend, FE_GET_INFO, &frontendInfo) >= 0) {
switch (frontendInfo.type) {
case FE_QPSK: frontendType = (frontendInfo.caps & FE_CAN_2G_MODULATION) ? SYS_DVBS2 : SYS_DVBS; break;
case FE_OFDM: frontendType = SYS_DVBT; break;
case FE_QAM: frontendType = SYS_DVBC_ANNEX_AC; break;
case FE_ATSC: frontendType = SYS_ATSC; break;
default: esyslog("ERROR: unknown frontend type %d on frontend %d/%d", frontendInfo.type, adapter, frontend);
}
}
else
LOG_ERROR;
if (frontendType != SYS_UNDEFINED) {
numProvidedSystems++;
if (frontendType == SYS_DVBS2)
numProvidedSystems++;
isyslog("frontend %d/%d provides %s (\"%s\")", adapter, frontend, DeliverySystems[frontendType], frontendInfo.name);
dvbTuner = new cDvbTuner(fd_frontend, adapter, frontend, frontendType);
}
}
else
esyslog("ERROR: can't open DVB device %d/%d", adapter, frontend);
StartSectionHandler();
}
cDvbDevice::~cDvbDevice()
{
StopSectionHandler();
delete dvbTuner;
delete ciAdapter;
// We're not explicitly closing any device files here, since this sometimes
// caused segfaults. Besides, the program is about to terminate anyway...
}
cString cDvbDevice::DvbName(const char *Name, int Adapter, int Frontend)
{
return cString::sprintf("%s%d/%s%d", DEV_DVB_ADAPTER, Adapter, Name, Frontend);
}
int cDvbDevice::DvbOpen(const char *Name, int Adapter, int Frontend, int Mode, bool ReportError)
{
cString FileName = DvbName(Name, Adapter, Frontend);
int fd = open(FileName, Mode);
if (fd < 0 && ReportError)
LOG_ERROR_STR(*FileName);
return fd;
}
bool cDvbDevice::Exists(int Adapter, int Frontend)
{
cString FileName = DvbName(DEV_DVB_FRONTEND, Adapter, Frontend);
if (access(FileName, F_OK) == 0) {
int f = open(FileName, O_RDONLY);
if (f >= 0) {
close(f);
return true;
}
else if (errno != ENODEV && errno != EINVAL)
LOG_ERROR_STR(*FileName);
}
else if (errno != ENOENT)
LOG_ERROR_STR(*FileName);
return false;
}
bool cDvbDevice::Probe(int Adapter, int Frontend)
{
cString FileName = DvbName(DEV_DVB_FRONTEND, Adapter, Frontend);
dsyslog("probing %s", *FileName);
for (cDvbDeviceProbe *dp = DvbDeviceProbes.First(); dp; dp = DvbDeviceProbes.Next(dp)) {
if (dp->Probe(Adapter, Frontend))
return true; // a plugin has created the actual device
}
dsyslog("creating cDvbDevice");
new cDvbDevice(Adapter, Frontend); // it's a "budget" device
return true;
}
bool cDvbDevice::Initialize(void)
{
int Checked = 0;
int Found = 0;
for (int Adapter = 0; ; Adapter++) {
for (int Frontend = 0; ; Frontend++) {
if (Exists(Adapter, Frontend)) {
if (Checked++ < MAXDVBDEVICES) {
if (UseDevice(NextCardIndex())) {
if (Probe(Adapter, Frontend))
Found++;
}
else
NextCardIndex(1); // skips this one
}
}
else if (Frontend == 0)
goto LastAdapter;
else
goto NextAdapter;
}
NextAdapter: ;
}
LastAdapter:
NextCardIndex(MAXDVBDEVICES - Checked); // skips the rest
if (Found > 0)
isyslog("found %d DVB device%s", Found, Found > 1 ? "s" : "");
else
isyslog("no DVB device found");
return Found > 0;
}
bool cDvbDevice::Ready(void)
{
if (ciAdapter)
return ciAdapter->Ready();
return true;
}
bool cDvbDevice::HasCi(void)
{
return ciAdapter;
}
bool cDvbDevice::SetPid(cPidHandle *Handle, int Type, bool On)
{
if (Handle->pid) {
dmx_pes_filter_params pesFilterParams;
memset(&pesFilterParams, 0, sizeof(pesFilterParams));
if (On) {
if (Handle->handle < 0) {
Handle->handle = DvbOpen(DEV_DVB_DEMUX, adapter, frontend, O_RDWR | O_NONBLOCK, true);
if (Handle->handle < 0) {
LOG_ERROR;
return false;
}
}
pesFilterParams.pid = Handle->pid;
pesFilterParams.input = DMX_IN_FRONTEND;
pesFilterParams.output = DMX_OUT_TS_TAP;
pesFilterParams.pes_type= DMX_PES_OTHER;
pesFilterParams.flags = DMX_IMMEDIATE_START;
if (ioctl(Handle->handle, DMX_SET_PES_FILTER, &pesFilterParams) < 0) {
LOG_ERROR;
return false;
}
}
else if (!Handle->used) {
CHECK(ioctl(Handle->handle, DMX_STOP));
if (Type <= ptTeletext) {
pesFilterParams.pid = 0x1FFF;
pesFilterParams.input = DMX_IN_FRONTEND;
pesFilterParams.output = DMX_OUT_DECODER;
pesFilterParams.pes_type= DMX_PES_OTHER;
pesFilterParams.flags = DMX_IMMEDIATE_START;
CHECK(ioctl(Handle->handle, DMX_SET_PES_FILTER, &pesFilterParams));
}
close(Handle->handle);
Handle->handle = -1;
}
}
return true;
}
int cDvbDevice::OpenFilter(u_short Pid, u_char Tid, u_char Mask)
{
cString FileName = DvbName(DEV_DVB_DEMUX, adapter, frontend);
int f = open(FileName, O_RDWR | O_NONBLOCK);
if (f >= 0) {
dmx_sct_filter_params sctFilterParams;
memset(&sctFilterParams, 0, sizeof(sctFilterParams));
sctFilterParams.pid = Pid;
sctFilterParams.timeout = 0;
sctFilterParams.flags = DMX_IMMEDIATE_START;
sctFilterParams.filter.filter[0] = Tid;
sctFilterParams.filter.mask[0] = Mask;
if (ioctl(f, DMX_SET_FILTER, &sctFilterParams) >= 0)
return f;
else {
esyslog("ERROR: can't set filter (pid=%d, tid=%02X, mask=%02X): %m", Pid, Tid, Mask);
close(f);
}
}
else
esyslog("ERROR: can't open filter handle on '%s'", *FileName);
return -1;
}
void cDvbDevice::CloseFilter(int Handle)
{
close(Handle);
}
bool cDvbDevice::ProvidesSource(int Source) const
{
int type = Source & cSource::st_Mask;
return type == cSource::stNone
|| type == cSource::stCable && (frontendType == SYS_DVBC_ANNEX_AC || frontendType == SYS_DVBC_ANNEX_B)
|| type == cSource::stSat && (frontendType == SYS_DVBS || frontendType == SYS_DVBS2)
|| type == cSource::stTerr && (frontendType == SYS_DVBT);
}
bool cDvbDevice::ProvidesTransponder(const cChannel *Channel) const
{
if (!ProvidesSource(Channel->Source()))
return false; // doesn't provide source
if (!cSource::IsSat(Channel->Source()))
return true; // source is sufficient for non sat
if (frontendType == SYS_DVBS && Channel->System() == SYS_DVBS2)
return false; // requires modulation system which frontend doesn't provide
return !Setup.DiSEqC || Diseqcs.Get(Channel->Source(), Channel->Frequency(), Channel->Polarization());
}
bool cDvbDevice::ProvidesChannel(const cChannel *Channel, int Priority, bool *NeedsDetachReceivers) const
{
bool result = false;
bool hasPriority = Priority < 0 || Priority > this->Priority();
bool needsDetachReceivers = false;
if (ProvidesTransponder(Channel)) {
result = hasPriority;
if (Priority >= 0 && Receiving(true)) {
if (dvbTuner->IsTunedTo(Channel)) {
if (Channel->Vpid() && !HasPid(Channel->Vpid()) || Channel->Apid(0) && !HasPid(Channel->Apid(0))) {
if (CamSlot() && Channel->Ca() >= CA_ENCRYPTED_MIN) {
if (CamSlot()->CanDecrypt(Channel))
result = true;
else
needsDetachReceivers = true;
}
else if (!IsPrimaryDevice())
result = true;
else
result = Priority >= Setup.PrimaryLimit;
}
else
result = !IsPrimaryDevice() || Priority >= Setup.PrimaryLimit;
}
else
needsDetachReceivers = true;
}
}
if (NeedsDetachReceivers)
*NeedsDetachReceivers = needsDetachReceivers;
return result;
}
int cDvbDevice::NumProvidedSystems(void) const
{
return numProvidedSystems;
}
bool cDvbDevice::IsTunedToTransponder(const cChannel *Channel)
{
return dvbTuner->IsTunedTo(Channel);
}
bool cDvbDevice::SetChannelDevice(const cChannel *Channel, bool LiveView)
{
dvbTuner->Set(Channel);
return true;
}
bool cDvbDevice::HasLock(int TimeoutMs)
{
return dvbTuner ? dvbTuner->Locked(TimeoutMs) : false;
}
void cDvbDevice::SetTransferModeForDolbyDigital(int Mode)
{
setTransferModeForDolbyDigital = Mode;
}
bool cDvbDevice::OpenDvr(void)
{
CloseDvr();
fd_dvr = DvbOpen(DEV_DVB_DVR, adapter, frontend, O_RDONLY | O_NONBLOCK, true);
if (fd_dvr >= 0)
tsBuffer = new cTSBuffer(fd_dvr, MEGABYTE(2), CardIndex() + 1);
return fd_dvr >= 0;
}
void cDvbDevice::CloseDvr(void)
{
if (fd_dvr >= 0) {
delete tsBuffer;
tsBuffer = NULL;
close(fd_dvr);
fd_dvr = -1;
}
}
bool cDvbDevice::GetTSPacket(uchar *&Data)
{
if (tsBuffer) {
Data = tsBuffer->Get();
return true;
}
return false;
}
// --- cDvbDeviceProbe -------------------------------------------------------
cList<cDvbDeviceProbe> DvbDeviceProbes;
cDvbDeviceProbe::cDvbDeviceProbe(void)
{
DvbDeviceProbes.Add(this);
}
cDvbDeviceProbe::~cDvbDeviceProbe()
{
DvbDeviceProbes.Del(this, false);
}