mvpreceiver.c

   1 #include "mvpreceiver.h"
   2
   3 int MVPReceiver::numMVPReceivers = 0;
   4
   5 MVPReceiver* MVPReceiver::create(cChannel* channel, int priority)
   6 {
   7 #if VDRVERSNUM < 10500
   8   bool NeedsDetachReceivers;
   9   cDevice* device = cDevice::GetDevice(channel, priority, &NeedsDetachReceivers);
  10 #else
  11   cDevice* device = cDevice::GetDevice(channel, priority, true); // last param is live-view
  12 #endif
  13
  14   if (!device)
  15   {
  16     Log::getInstance()->log("MVPReceiver", Log::INFO, "No device found to receive this channel at this priority");
  17     return NULL;
  18   }
  19
  20 #if VDRVERSNUM < 10500
  21   if (NeedsDetachReceivers)
  22   {
  23     Log::getInstance()->log("MVPReceiver", Log::WARN, "Needs detach receivers");
  24
  25     // Need to detach other receivers or VDR will shut down??
  26   }
  27 #endif
  28
  29   MVPReceiver* m = new MVPReceiver(channel, device);
  30
  31   numMVPReceivers++;
  32   Log::getInstance()->log("MVPReceiver", Log::DEBUG, "num mvp receivers now up to %i", numMVPReceivers);
  33
  34   return m;
  35 }
  36
  37 MVPReceiver::MVPReceiver(cChannel* channel, cDevice* device)
  38 #if VDRVERSNUM < 10300
  39 : cReceiver(channel->Ca(), 0, 7, channel->Vpid(), channel->Ppid(), channel->Apid1(), channel->Apid2(), channel->Dpid1(), channel->Dpid2(), channel->Tpid())
  40 #elif VDRVERSNUM < 10500
  41 : cReceiver(channel->Ca(), 0, channel->Vpid(), channel->Apids(), channel->Dpids(), mergeSpidsTpid(channel->Spids(),channel->Tpid()))
  42 #elif VDRVERSNUM < 10712
  43 : cReceiver(channel->GetChannelID(), 0, channel->Vpid(), channel->Apids(), channel->Dpids(), mergeSpidsTpid(channel->Spids(),channel->Tpid()))
  44 #else
  45 : cReceiver(channel, 0)
  46 #endif
  47 {
  48   logger = Log::getInstance();
  49   vdrActivated = false;
  50   inittedOK = 0;
  51   streamID = 0;
  52   tcp = NULL;
  53
  54 #if VDRVERSNUM >= 10712
  55   AddPid(channel->Tpid());
  56 #endif
  57
  58 //  logger->log("MVPReceiver", Log::DEBUG, "Channel has VPID %i APID %i", channel->Vpid(), channel->Apid(0));
  59
  60   if (!processed.init(1000000)) return;
  61   pthread_mutex_init(&processedRingLock, NULL);
  62
  63   // OK
  64
  65   // Detect whether this is video or radio and set an appropriate stream chunk size
  66   // 50k for video, 5k for radio
  67   // Perhaps move this client side?
  68   if (channel->Vpid()) streamChunkSize = 50000;
  69   else streamChunkSize = 5000;
  70
  71   inittedOK = 1;
  72   device->SwitchChannel(channel, false);
  73   device->AttachReceiver(this);
  74 }
  75
  76 int MVPReceiver::init(TCP* ttcp, ULONG tstreamID)
  77 {
  78   tcp = ttcp;
  79   streamID = tstreamID;
  80   return inittedOK;
  81 }
  82
  83 MVPReceiver::~MVPReceiver()
  84 {
  85   numMVPReceivers--;
  86   Log::getInstance()->log("MVPReceiver", Log::DEBUG, "num mvp receivers now down to %i", numMVPReceivers);
  87 }
  88
  89 void MVPReceiver::Activate(bool on)
  90 {
  91   vdrActivated = on;
  92   if (on)
  93   {
  94     logger->log("MVPReceiver", Log::DEBUG, "VDR active");
  95     threadStart();
  96   }
  97   else
  98   {
  99     logger->log("MVPReceiver", Log::DEBUG, "VDR inactive, sending stream end message");
 100     threadStop();
 101     sendStreamEnd();
 102   }
 103 }
 104
 105 bool MVPReceiver::isVdrActivated()
 106 {
 107   return vdrActivated;
 108 }
 109
 110 void MVPReceiver::detachMVPReceiver()
 111 {
 112   threadStop();
 113   Detach();
 114 }
 115
 116 void MVPReceiver::Receive(UCHAR* data, int length)
 117 {
 118   pthread_mutex_lock(&processedRingLock);
 119   processed.put(data, length);
 120   if (processed.getContent() > streamChunkSize) threadSignal();
 121   pthread_mutex_unlock(&processedRingLock);
 122 }
 123
 124 void MVPReceiver::threadMethod()
 125 {
 126   ULONG *p;
 127   ULONG headerLength = sizeof(ULONG) * 4;
 128   UCHAR buffer[streamChunkSize + headerLength];
 129   int amountReceived;
 130
 131 //   threadSetKillable(); ??
 132
 133   while(1)
 134   {
 135     threadLock();
 136     threadWaitForSignal();
 137     threadUnlock();
 138     threadCheckExit();
 139
 140     do
 141     {
 142       pthread_mutex_lock(&processedRingLock);
 143       amountReceived = processed.get(buffer+headerLength, streamChunkSize);
 144       pthread_mutex_unlock(&processedRingLock);
 145
 146       p = (ULONG*)&buffer[0]; *p = htonl(2); // stream channel
 147       p = (ULONG*)&buffer[4]; *p = htonl(streamID);
 148       p = (ULONG*)&buffer[8]; *p = htonl(0); // here insert flag: 0 = ok, data follows
 149       p = (ULONG*)&buffer[12]; *p = htonl(amountReceived);
 150
 151       tcp->sendPacket(buffer, amountReceived + headerLength);
 152     } while(processed.getContent() >= streamChunkSize);
 153   }
 154 }
 155
 156 void MVPReceiver::sendStreamEnd()
 157 {
 158   ULONG *p;
 159   ULONG bufferLength = sizeof(ULONG) * 4;
 160   UCHAR buffer[bufferLength];
 161   p = (ULONG*)&buffer[0]; *p = htonl(2); // stream channel
 162   p = (ULONG*)&buffer[4]; *p = htonl(streamID);
 163   p = (ULONG*)&buffer[8]; *p = htonl(1); // stream end
 164   p = (ULONG*)&buffer[12]; *p = htonl(0); // zero length, no more data
 165   tcp->sendPacket(buffer, bufferLength);
 166 }
 167
 168
 169 int *MVPReceiver::mergeSpidsTpid(const int *spids,int tpid)
 170 {
 171   int *destpids;
 172   const int *runspid=spids;
 173   for (runspid=spids,destpids=mergedSpidsTpid;*runspid;runspid++,destpids++) {
 174        *destpids=*runspid;
 175   }
 176   *destpids=tpid;
 177   destpids++;
 178   *destpids=0;
 179   return mergedSpidsTpid;
 180 }
 181