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
 100         if (!m_PMT.getCurrent(ptr))
 101         {
 102                 std::vector<ProgramMapSection*>::const_iterator i;
 103                 for (i = ptr->getSections().begin(); i != ptr->getSections().end(); ++i)
 104                 {
 105                         const ProgramMapSection &pmt = **i;
 106                         program.pcrPid = pmt.getPcrPid();
 107
 108                         ElementaryStreamInfoConstIterator es;
 109                         for (es = pmt.getEsInfo()->begin(); es != pmt.getEsInfo()->end(); ++es)
 110                         {
 111                                 int isaudio = 0, isvideo = 0;
 112                                 videoStream video;
 113                                 audioStream audio;
 114
 115                                 video.pid = (*es)->getPid();
 116                                 audio.pid = (*es)->getPid();
 117
 118                                 switch ((*es)->getType())
 119                                 {
 120                                 case 0x01: // MPEG 1 video
 121                                 case 0x02: // MPEG 2 video
 122                                         isvideo = 1;
 123                                         break;
 124                                 case 0x03: // MPEG 1 audio
 125                                 case 0x04: // MPEG 2 audio:
 126                                         isaudio = 1;
 127                                         audio.type = audioStream::atMPEG;
 128                                         break;
 129                                 }
 130                                 if (isaudio)
 131                                         program.audioStreams.push_back(audio);
 132                                 if (isvideo)
 133                                         program.videoStreams.push_back(video);
 134                         }
 135                 }
 136                 return 0;
 137         }
 138         else if ( m_service && !m_service->cacheEmpty() )
 139         {
 140                 int vpid = m_service->getCachePID(eDVBService::cVPID),
 141                         apid_ac3 = m_service->getCachePID(eDVBService::cAPID),
 142                         apid_mpeg = m_service->getCachePID(eDVBService::cAC3PID),
 143                         pcrpid = m_service->getCachePID(eDVBService::cPCRPID),
 144                         cnt=0;
 145                 if ( vpid != -1 )
 146                 {
 147                         videoStream s;
 148                         s.pid = vpid;
 149                         program.videoStreams.push_back(s);
 150                         ++cnt;
 151                 }
 152                 if ( apid_ac3 != -1 )
 153                 {
 154                         audioStream s;
 155                         s.type = audioStream::atAC3;
 156                         s.pid = apid_ac3;
 157                         program.audioStreams.push_back(s);
 158                         ++cnt;
 159                 }
 160                 if ( apid_mpeg != -1 )
 161                 {
 162                         audioStream s;
 163                         s.type = audioStream::atMPEG;
 164                         s.pid = apid_mpeg;
 165                         program.audioStreams.push_back(s);
 166                         ++cnt;
 167                 }
 168                 if ( pcrpid != -1 )
 169                 {
 170                         ++cnt;
 171                         program.pcrPid = pcrpid;
 172                 }
 173                 if ( cnt )
 174                         return 0;
 175         }
 176         return -1;
 177 }
 178
 179 int eDVBServicePMTHandler::getDemux(ePtr<iDVBDemux> &demux)
 180 {
 181         demux = m_demux;
 182         if (demux)
 183                 return 0;
 184         else
 185                 return -1;
 186 }
 187
 188 int eDVBServicePMTHandler::getPVRChannel(ePtr<iDVBPVRChannel> &pvr_channel)
 189 {
 190         pvr_channel = m_pvr_channel;
 191         if (pvr_channel)
 192                 return 0;
 193         else
 194                 return -1;
 195 }
 196
 197 int eDVBServicePMTHandler::tune(eServiceReferenceDVB &ref)
 198 {
 199         RESULT res;
 200         m_reference = ref;
 201
 202                 /* is this a normal (non PVR) channel? */
 203         if (ref.path.empty())
 204         {
 205                 eDVBChannelID chid;
 206                 ref.getChannelID(chid);
 207                 res = m_resourceManager->allocateChannel(chid, m_channel);
 208         } else
 209         {
 210                 eDVBMetaParser parser;
 211
 212                 if (parser.parseFile(ref.path))
 213                         eWarning("no .meta file found, trying original service ref.");
 214                 else
 215                         m_reference = parser.m_ref;
 216
 217                 eDebug("alloc PVR");
 218                         /* allocate PVR */
 219                 res = m_resourceManager->allocatePVRChannel(m_pvr_channel);
 220                 if (res)
 221                         eDebug("allocatePVRChannel failed!\n");
 222                 m_channel = m_pvr_channel;
 223         }
 224
 225         if (m_channel)
 226         {
 227                 m_channel->connectStateChange(
 228                         slot(*this, &eDVBServicePMTHandler::channelStateChanged),
 229                         m_channelStateChanged_connection);
 230                 m_last_channel_state = -1;
 231                 channelStateChanged(m_channel);
 232         }
 233
 234         if (m_pvr_channel)
 235                 m_pvr_channel->playFile(ref.path.c_str());
 236
 237         ePtr<iDVBChannelList> db;
 238         if (!m_resourceManager->getChannelList(db))
 239                 db->getService((eServiceReferenceDVB&)m_reference, m_service);
 240
 241         return res;
 242 }
 243
 244 void eDVBCAService::Connect()
 245 {
 246         memset(&m_servaddr, 0, sizeof(struct sockaddr_un));
 247         m_servaddr.sun_family = AF_UNIX;
 248         strcpy(m_servaddr.sun_path, "/tmp/camd.socket");
 249         m_clilen = sizeof(m_servaddr.sun_family) + strlen(m_servaddr.sun_path);
 250         m_sock = socket(PF_UNIX, SOCK_STREAM, 0);
 251         connect(m_sock, (struct sockaddr *) &m_servaddr, m_clilen);
 252         fcntl(m_sock, F_SETFL, O_NONBLOCK);
 253         int val=1;
 254         setsockopt(m_sock, SOL_SOCKET, SO_REUSEADDR, &val, 4);
 255 }
 256
 257 void eDVBCAService::buildCAPMT()
 258 {
 259         ePtr<eTable<ProgramMapSection> > ptr;
 260
 261         if (m_parent.m_PMT.getCurrent(ptr))
 262                 return;
 263
 264         std::vector<ProgramMapSection*>::const_iterator i=ptr->getSections().begin();
 265         if ( i != ptr->getSections().end() )
 266         {
 267                 CaProgramMapSection capmt(*i++, m_capmt == NULL ? 0x03 /*only*/: 0x05 /*update*/, 0x01 );
 268
 269                 while( i != ptr->getSections().end() )
 270                 {
 271                         eDebug("append");
 272                         capmt.append(*i++);
 273                 }
 274
 275                 // add our private descriptors to capmt
 276                 uint8_t tmp[10];
 277
 278                 tmp[0]=0x84;  // pmt pid
 279                 tmp[1]=0x02;
 280                 tmp[2]=m_parent.m_pmt_pid>>8;
 281                 tmp[3]=m_parent.m_pmt_pid&0xFF;
 282                 capmt.injectDescriptor(tmp, false);
 283
 284                 tmp[0] = 0x82; // demux
 285                 tmp[1] = 0x02;
 286                 m_parent.m_demux->getCADemuxID(tmp[3]); // read section data from demux number
 287                 tmp[2] = 1 << tmp[3];                   // descramble bitmask
 288                 capmt.injectDescriptor(tmp, false);
 289
 290                 tmp[0] = 0x81; // dvbnamespace
 291                 tmp[1] = 0x08;
 292                 tmp[2] = m_parent.m_reference.getDVBNamespace().get()>>24;
 293                 tmp[3]=(m_parent.m_reference.getDVBNamespace().get()>>16)&0xFF;
 294                 tmp[4]=(m_parent.m_reference.getDVBNamespace().get()>>8)&0xFF;
 295                 tmp[5]=m_parent.m_reference.getDVBNamespace().get()&0xFF;
 296                 tmp[6]=m_parent.m_reference.getTransportStreamID().get()>>8;
 297                 tmp[7]=m_parent.m_reference.getTransportStreamID().get()&0xFF;
 298                 tmp[8]=m_parent.m_reference.getOriginalNetworkID().get()>>8;
 299                 tmp[9]=m_parent.m_reference.getOriginalNetworkID().get()&0xFF;
 300                 capmt.injectDescriptor(tmp, false);
 301
 302                 if ( !m_capmt )
 303                         m_capmt = new uint8_t[2048];
 304
 305                 capmt.writeToBuffer(m_capmt);
 306         }
 307
 308         if ( m_sendstate != 0xFFFFFFFF )
 309                 m_sendstate=0;
 310         sendCAPMT();
 311 }
 312
 313 void eDVBCAService::sendCAPMT()
 314 {
 315         if ( m_sendstate && m_sendstate != 0xFFFFFFFF ) // broken pipe retry
 316         {
 317                 ::close(m_sock);
 318                 Connect();
 319         }
 320
 321         int wp=0;
 322         if ( m_capmt[3] & 0x80 )
 323         {
 324                 int i=0;
 325                 int lenbytes = m_capmt[3] & ~0x80;
 326                 while(i < lenbytes)
 327                         wp |= (m_capmt[4+i] << (8 * i++));
 328                 wp+=4;
 329                 wp+=lenbytes;
 330         }
 331         else
 332         {
 333                 wp = m_capmt[3];
 334                 wp+=4;
 335         }
 336
 337         if ( write(m_sock, m_capmt, wp) == wp )
 338         {
 339                 m_sendstate=0xFFFFFFFF;
 340                 eDebug("[eDVBCAHandler] send %d bytes",wp);
 341 #if 1
 342                 for(int i=0;i<wp;i++)
 343                         eDebugNoNewLine("%02x ", m_capmt[i]);
 344                 eDebug("");
 345 #endif
 346         }
 347         else
 348         {
 349                 switch(m_sendstate)
 350                 {
 351                         case 0xFFFFFFFF:
 352                                 ++m_sendstate;
 353                                 m_retryTimer.start(0,true);
 354                                 eDebug("[eDVBCAHandler] send failed .. immediate retry");
 355                                 break;
 356                         default:
 357                                 m_retryTimer.start(5000,true);
 358                                 eDebug("[eDVBCAHandler] send failed .. retry in 5 sec");
 359                                 break;
 360                 }
 361                 ++m_sendstate;
 362         }
 363 }