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 //  logger->log("MVPReceiver", Log::DEBUG, "Channel has VPID %i APID %i", channel->Vpid(), channel->Apid(0));
  55
  56   if (!processed.init(1000000)) return;
  57   pthread_mutex_init(&processedRingLock, NULL);
  58
  59   // OK
  60
  61   // Detect whether this is video or radio and set an appropriate stream chunk size
  62   // 50k for video, 5k for radio
  63   // Perhaps move this client side?
  64   if (channel->Vpid()) streamChunkSize = 50000;
  65   else streamChunkSize = 5000;
  66
  67   inittedOK = 1;
  68   device->SwitchChannel(channel, false);
  69   device->AttachReceiver(this);
  70 }
  71
  72 int MVPReceiver::init(TCP* ttcp, ULONG tstreamID)
  73 {
  74   tcp = ttcp;
  75   streamID = tstreamID;
  76   return inittedOK;
  77 }
  78
  79 MVPReceiver::~MVPReceiver()
  80 {
  81   Detach();
  82   threadStop();
  83
  84   numMVPReceivers--;
  85   Log::getInstance()->log("MVPReceiver", Log::DEBUG, "num mvp receivers now down to %i", numMVPReceivers);
  86 }
  87
  88 void MVPReceiver::Activate(bool on)
  89 {
  90   vdrActivated = on;
  91   if (on)
  92   {
  93     logger->log("MVPReceiver", Log::DEBUG, "VDR active");
  94     threadStart();
  95   }
  96   else
  97   {
  98     logger->log("MVPReceiver", Log::DEBUG, "VDR inactive, sending stream end message");
  99     threadStop();
 100     sendStreamEnd();
 101   }
 102 }
 103
 104 bool MVPReceiver::isVdrActivated()
 105 {
 106   return vdrActivated;
 107 }
 108
 109 void MVPReceiver::Receive(UCHAR* data, int length)
 110 {
 111   pthread_mutex_lock(&processedRingLock);
 112   processed.put(data, length);
 113   if (processed.getContent() > streamChunkSize) threadSignal();
 114   pthread_mutex_unlock(&processedRingLock);
 115 }
 116
 117 void MVPReceiver::threadMethod()
 118 {
 119   ULONG *p;
 120   ULONG headerLength = sizeof(ULONG) * 4;
 121   UCHAR buffer[streamChunkSize + headerLength];
 122   int amountReceived;
 123
 124 //   threadSetKillable(); ??
 125
 126   while(1)
 127   {
 128     threadLock();
 129     threadWaitForSignal();
 130     threadUnlock();
 131     threadCheckExit();
 132
 133     do
 134     {
 135       pthread_mutex_lock(&processedRingLock);
 136       amountReceived = processed.get(buffer+headerLength, streamChunkSize);
 137       pthread_mutex_unlock(&processedRingLock);
 138
 139       p = (ULONG*)&buffer[0]; *p = htonl(2); // stream channel
 140       p = (ULONG*)&buffer[4]; *p = htonl(streamID);
 141       p = (ULONG*)&buffer[8]; *p = htonl(0); // here insert flag: 0 = ok, data follows
 142       p = (ULONG*)&buffer[12]; *p = htonl(amountReceived);
 143
 144       tcp->sendPacket(buffer, amountReceived + headerLength);
 145     } while(processed.getContent() >= streamChunkSize);
 146   }
 147 }
 148
 149 void MVPReceiver::sendStreamEnd()
 150 {
 151   ULONG *p;
 152   ULONG bufferLength = sizeof(ULONG) * 4;
 153   UCHAR buffer[bufferLength];
 154   p = (ULONG*)&buffer[0]; *p = htonl(2); // stream channel
 155   p = (ULONG*)&buffer[4]; *p = htonl(streamID);
 156   p = (ULONG*)&buffer[8]; *p = htonl(1); // stream end
 157   p = (ULONG*)&buffer[12]; *p = htonl(0); // zero length, no more data
 158   tcp->sendPacket(buffer, bufferLength);
 159 }
 160
 161
 162 int *MVPReceiver::mergeSpidsTpid(const int *spids,int tpid)
 163 {
 164   int *destpids;
 165   const int *runspid=spids;
 166   for (runspid=spids,destpids=mergedSpidsTpid;*runspid;runspid++,destpids++) {
 167        *destpids=*runspid;
 168   }
 169   *destpids=tpid;
 170   destpids++;
 171   *destpids=0;
 172   return mergedSpidsTpid;
 173 }