lib/dvb/pmt.cpp

   1 #include <lib/base/eerror.h>
   2 #include <lib/dvb/pmt.h>
   3 #include <lib/dvb/specs.h>
   4 #include <lib/dvb/dvb.h>
   5 #include <lib/dvb/metaparser.h>
   6 #include <dvbsi++/ca_program_map_section.h>
   7
   8 eDVBServicePMTHandler::eDVBServicePMTHandler(int record)
   9         :m_pmt_pid(0xFFFF), m_ca_servicePtr(0)
  10 {
  11         m_record = record;
  12         eDVBResourceManager::getInstance(m_resourceManager);
  13         CONNECT(m_PMT.tableReady, eDVBServicePMTHandler::PMTready);
  14         CONNECT(m_PAT.tableReady, eDVBServicePMTHandler::PATready);
  15 }
  16
  17 eDVBServicePMTHandler::~eDVBServicePMTHandler()
  18 {
  19         delete m_ca_servicePtr;
  20 }
  21
  22 void eDVBServicePMTHandler::channelStateChanged(iDVBChannel *channel)
  23 {
  24         int state;
  25         channel->getState(state);
  26
  27         if ((m_last_channel_state != iDVBChannel::state_ok)
  28                 && (state == iDVBChannel::state_ok) && (!m_demux))
  29         {
  30                 if (m_channel)
  31                         if (m_channel->getDemux(m_demux, m_record ? 0 : iDVBChannel::capDecode))
  32                                 eDebug("Allocating a demux for now tuned-in channel failed.");
  33
  34                 serviceEvent(eventTuned);
  35
  36                 if (m_demux)
  37                 {
  38                         eDebug("ok ... now we start!!");
  39
  40                         /* emit */ m_resourceManager->m_channelRunning(channel);
  41
  42                         m_PAT.begin(eApp, eDVBPATSpec(), m_demux);
  43
  44                         if ( m_service && !m_service->cacheEmpty() )
  45                                 serviceEvent(eventNewProgramInfo);
  46                 }
  47         }
  48 }
  49
  50 void eDVBServicePMTHandler::PMTready(int error)
  51 {
  52         if (error)
  53                 serviceEvent(eventNoPMT);
  54         else
  55         {
  56                 serviceEvent(eventNewProgramInfo);
  57                 if (!m_pvr_channel && !m_ca_servicePtr)   // don't send campmt to camd.socket for playbacked services
  58                         m_ca_servicePtr = new eDVBCAService(*this);
  59                 if (m_ca_servicePtr)
  60                         m_ca_servicePtr->buildCAPMT();
  61         }
  62 }
  63
  64 void eDVBServicePMTHandler::PATready(int)
  65 {
  66         eDebug("got PAT");
  67         ePtr<eTable<ProgramAssociationSection> > ptr;
  68         if (!m_PAT.getCurrent(ptr))
  69         {
  70                 int pmtpid = -1;
  71                 std::vector<ProgramAssociationSection*>::const_iterator i;
  72                 for (i = ptr->getSections().begin(); i != ptr->getSections().end(); ++i)
  73                 {
  74                         const ProgramAssociationSection &pat = **i;
  75                         ProgramAssociationConstIterator program;
  76                         for (program = pat.getPrograms()->begin(); program != pat.getPrograms()->end(); ++program)
  77                                 if (eServiceID((*program)->getProgramNumber()) == m_reference.getServiceID())
  78                                         pmtpid = (*program)->getProgramMapPid();
  79                 }
  80                 if (pmtpid == -1)
  81                         serviceEvent(eventNoPATEntry);
  82                 else
  83                 {
  84                         m_PMT.begin(eApp, eDVBPMTSpec(pmtpid, m_reference.getServiceID().get()), m_demux);
  85                         m_pmt_pid = pmtpid;
  86                 }
  87         } else
  88                 serviceEvent(eventNoPAT);
  89 }
  90
  91 int eDVBServicePMTHandler::getProgramInfo(struct program &program)
  92 {
  93         eDebug("got PMT");
  94         ePtr<eTable<ProgramMapSection> > ptr;
  95
  96         program.videoStreams.clear();
  97         program.audioStreams.clear();
  98         program.pcrPid = -1;
  99         program.pmtPid = m_pmt_pid < 0x1fff ? m_pmt_pid : -1;
 100
 101         if (!m_PMT.getCurrent(ptr))
 102         {
 103                 std::vector<ProgramMapSection*>::const_iterator i;
 104                 for (i = ptr->getSections().begin(); i != ptr->getSections().end(); ++i)
 105                 {
 106                         const ProgramMapSection &pmt = **i;
 107                         program.pcrPid = pmt.getPcrPid();
 108
 109                         ElementaryStreamInfoConstIterator es;
 110                         for (es = pmt.getEsInfo()->begin(); es != pmt.getEsInfo()->end(); ++es)
 111                         {
 112                                 int isaudio = 0, isvideo = 0;
 113                                 videoStream video;
 114                                 audioStream audio;
 115
 116                                 video.pid = (*es)->getPid();
 117                                 audio.pid = (*es)->getPid();
 118
 119                                 switch ((*es)->getType())
 120                                 {
 121                                 case 0x01: // MPEG 1 video
 122                                 case 0x02: // MPEG 2 video
 123                                         isvideo = 1;
 124                                         break;
 125                                 case 0x03: // MPEG 1 audio
 126                                 case 0x04: // MPEG 2 audio:
 127                                         isaudio = 1;
 128                                         audio.type = audioStream::atMPEG;
 129                                         break;
 130                                 }
 131                                 if (isaudio)
 132                                         program.audioStreams.push_back(audio);
 133                                 if (isvideo)
 134                                         program.videoStreams.push_back(video);
 135                         }
 136                 }
 137                 return 0;
 138         }
 139         else if ( m_service && !m_service->cacheEmpty() )
 140         {
 141                 int vpid = m_service->getCachePID(eDVBService::cVPID),
 142                         apid_ac3 = m_service->getCachePID(eDVBService::cAPID),
 143                         apid_mpeg = m_service->getCachePID(eDVBService::cAC3PID),
 144                         pcrpid = m_service->getCachePID(eDVBService::cPCRPID),
 145                         cnt=0;
 146                 if ( vpid != -1 )
 147                 {
 148                         videoStream s;
 149                         s.pid = vpid;
 150                         program.videoStreams.push_back(s);
 151                         ++cnt;
 152                 }
 153                 if ( apid_ac3 != -1 )
 154                 {
 155                         audioStream s;
 156                         s.type = audioStream::atAC3;
 157                         s.pid = apid_ac3;
 158                         program.audioStreams.push_back(s);
 159                         ++cnt;
 160                 }
 161                 if ( apid_mpeg != -1 )
 162                 {
 163                         audioStream s;
 164                         s.type = audioStream::atMPEG;
 165                         s.pid = apid_mpeg;
 166                         program.audioStreams.push_back(s);
 167                         ++cnt;
 168                 }
 169                 if ( pcrpid != -1 )
 170                 {
 171                         ++cnt;
 172                         program.pcrPid = pcrpid;
 173                 }
 174                 if ( cnt )
 175                         return 0;
 176         }
 177         return -1;
 178 }
 179
 180 int eDVBServicePMTHandler::getDemux(ePtr<iDVBDemux> &demux)
 181 {
 182         demux = m_demux;
 183         if (demux)
 184                 return 0;
 185         else
 186                 return -1;
 187 }
 188
 189 int eDVBServicePMTHandler::getPVRChannel(ePtr<iDVBPVRChannel> &pvr_channel)
 190 {
 191         pvr_channel = m_pvr_channel;
 192         if (pvr_channel)
 193                 return 0;
 194         else
 195                 return -1;
 196 }
 197
 198 int eDVBServicePMTHandler::tune(eServiceReferenceDVB &ref)
 199 {
 200         RESULT res;
 201         m_reference = ref;
 202
 203                 /* is this a normal (non PVR) channel? */
 204         if (ref.path.empty())
 205         {
 206                 eDVBChannelID chid;
 207                 ref.getChannelID(chid);
 208                 res = m_resourceManager->allocateChannel(chid, m_channel);
 209         } else
 210         {
 211                 eDVBMetaParser parser;
 212
 213                 if (parser.parseFile(ref.path))
 214                         eWarning("no .meta file found, trying original service ref.");
 215                 else
 216                         m_reference = parser.m_ref;
 217
 218                 eDebug("alloc PVR");
 219                         /* allocate PVR */
 220                 res = m_resourceManager->allocatePVRChannel(m_pvr_channel);
 221                 if (res)
 222                         eDebug("allocatePVRChannel failed!\n");
 223                 m_channel = m_pvr_channel;
 224         }
 225
 226         if (m_channel)
 227         {
 228                 m_channel->connectStateChange(
 229                         slot(*this, &eDVBServicePMTHandler::channelStateChanged),
 230                         m_channelStateChanged_connection);
 231                 m_last_channel_state = -1;
 232                 channelStateChanged(m_channel);
 233         }
 234
 235         if (m_pvr_channel)
 236                 m_pvr_channel->playFile(ref.path.c_str());
 237
 238         ePtr<iDVBChannelList> db;
 239         if (!m_resourceManager->getChannelList(db))
 240                 db->getService((eServiceReferenceDVB&)m_reference, m_service);
 241
 242         return res;
 243 }
 244
 245 void eDVBCAService::Connect()
 246 {
 247         memset(&m_servaddr, 0, sizeof(struct sockaddr_un));
 248         m_servaddr.sun_family = AF_UNIX;
 249         strcpy(m_servaddr.sun_path, "/tmp/camd.socket");
 250         m_clilen = sizeof(m_servaddr.sun_family) + strlen(m_servaddr.sun_path);
 251         m_sock = socket(PF_UNIX, SOCK_STREAM, 0);
 252         connect(m_sock, (struct sockaddr *) &m_servaddr, m_clilen);
 253         fcntl(m_sock, F_SETFL, O_NONBLOCK);
 254         int val=1;
 255         setsockopt(m_sock, SOL_SOCKET, SO_REUSEADDR, &val, 4);
 256 }
 257
 258 void eDVBCAService::buildCAPMT()
 259 {
 260         ePtr<eTable<ProgramMapSection> > ptr;
 261
 262         if (m_parent.m_PMT.getCurrent(ptr))
 263                 return;
 264
 265         std::vector<ProgramMapSection*>::const_iterator i=ptr->getSections().begin();
 266         if ( i != ptr->getSections().end() )
 267         {
 268                 CaProgramMapSection capmt(*i++, m_capmt == NULL ? 0x03 /*only*/: 0x05 /*update*/, 0x01 );
 269
 270                 while( i != ptr->getSections().end() )
 271                 {
 272                         eDebug("append");
 273                         capmt.append(*i++);
 274                 }
 275
 276                 // add our private descriptors to capmt
 277                 uint8_t tmp[10];
 278
 279                 tmp[0]=0x84;  // pmt pid
 280                 tmp[1]=0x02;
 281                 tmp[2]=m_parent.m_pmt_pid>>8;
 282                 tmp[3]=m_parent.m_pmt_pid&0xFF;
 283                 capmt.injectDescriptor(tmp, false);
 284
 285                 tmp[0] = 0x82; // demux
 286                 tmp[1] = 0x02;
 287                 m_parent.m_demux->getCADemuxID(tmp[3]); // read section data from demux number
 288                 tmp[2] = 1 << tmp[3];                   // descramble bitmask
 289                 capmt.injectDescriptor(tmp, false);
 290
 291                 tmp[0] = 0x81; // dvbnamespace
 292                 tmp[1] = 0x08;
 293                 tmp[2] = m_parent.m_reference.getDVBNamespace().get()>>24;
 294                 tmp[3]=(m_parent.m_reference.getDVBNamespace().get()>>16)&0xFF;
 295                 tmp[4]=(m_parent.m_reference.getDVBNamespace().get()>>8)&0xFF;
 296                 tmp[5]=m_parent.m_reference.getDVBNamespace().get()&0xFF;
 297                 tmp[6]=m_parent.m_reference.getTransportStreamID().get()>>8;
 298                 tmp[7]=m_parent.m_reference.getTransportStreamID().get()&0xFF;
 299                 tmp[8]=m_parent.m_reference.getOriginalNetworkID().get()>>8;
 300                 tmp[9]=m_parent.m_reference.getOriginalNetworkID().get()&0xFF;
 301                 capmt.injectDescriptor(tmp, false);
 302
 303                 if ( !m_capmt )
 304                         m_capmt = new uint8_t[2048];
 305
 306                 capmt.writeToBuffer(m_capmt);
 307         }
 308
 309         if ( m_sendstate != 0xFFFFFFFF )
 310                 m_sendstate=0;
 311         sendCAPMT();
 312 }
 313
 314 void eDVBCAService::sendCAPMT()
 315 {
 316         if ( m_sendstate && m_sendstate != 0xFFFFFFFF ) // broken pipe retry
 317         {
 318                 ::close(m_sock);
 319                 Connect();
 320         }
 321
 322         int wp=0;
 323         if ( m_capmt[3] & 0x80 )
 324         {
 325                 int i=0;
 326                 int lenbytes = m_capmt[3] & ~0x80;
 327                 while(i < lenbytes)
 328                         wp |= (m_capmt[4+i] << (8 * i++));
 329                 wp+=4;
 330                 wp+=lenbytes;
 331         }
 332         else
 333         {
 334                 wp = m_capmt[3];
 335                 wp+=4;
 336         }
 337
 338         if ( write(m_sock, m_capmt, wp) == wp )
 339         {
 340                 m_sendstate=0xFFFFFFFF;
 341                 eDebug("[eDVBCAHandler] send %d bytes",wp);
 342 #if 1
 343                 for(int i=0;i<wp;i++)
 344                         eDebugNoNewLine("%02x ", m_capmt[i]);
 345                 eDebug("");
 346 #endif
 347         }
 348         else
 349         {
 350                 switch(m_sendstate)
 351                 {
 352                         case 0xFFFFFFFF:
 353                                 ++m_sendstate;
 354                                 m_retryTimer.start(0,true);
 355                                 eDebug("[eDVBCAHandler] send failed .. immediate retry");
 356                                 break;
 357                         default:
 358                                 m_retryTimer.start(5000,true);
 359                                 eDebug("[eDVBCAHandler] send failed .. retry in 5 sec");
 360                                 break;
 361                 }
 362                 ++m_sendstate;
 363         }
 364 }