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 #else
  43 : cReceiver(channel->GetChannelID(), 0, channel->Vpid(), channel->Apids(), channel->Dpids(), mergeSpidsTpid(channel->Spids(),channel->Tpid()))
  44 #endif
  45 {
  46   logger = Log::getInstance();
  47   vdrActivated = false;
  48   inittedOK = 0;
  49   streamID = 0;
  50   tcp = NULL;
  51
  52 //  logger->log("MVPReceiver", Log::DEBUG, "Channel has VPID %i APID %i", channel->Vpid(), channel->Apid(0));
  53
  54   if (!processed.init(1000000)) return;
  55   pthread_mutex_init(&processedRingLock, NULL);
  56
  57   // OK
  58
  59   // Detect whether this is video or radio and set an appropriate stream chunk size
  60   // 50k for video, 5k for radio
  61   // Perhaps move this client side?
  62   if (channel->Vpid()) streamChunkSize = 50000;
  63   else streamChunkSize = 5000;
  64
  65   inittedOK = 1;
  66   device->SwitchChannel(channel, false);
  67   device->AttachReceiver(this);
  68 }
  69
  70 int MVPReceiver::init(TCP* ttcp, ULONG tstreamID)
  71 {
  72   tcp = ttcp;
  73   streamID = tstreamID;
  74   return inittedOK;
  75 }
  76
  77 MVPReceiver::~MVPReceiver()
  78 {
  79   Detach();
  80   threadStop();
  81
  82   numMVPReceivers--;
  83   Log::getInstance()->log("MVPReceiver", Log::DEBUG, "num mvp receivers now down to %i", numMVPReceivers);
  84 }
  85
  86 void MVPReceiver::Activate(bool on)
  87 {
  88   vdrActivated = on;
  89   if (on)
  90   {
  91     logger->log("MVPReceiver", Log::DEBUG, "VDR active");
  92     threadStart();
  93   }
  94   else
  95   {
  96     logger->log("MVPReceiver", Log::DEBUG, "VDR inactive, sending stream end message");
  97     threadStop();
  98     sendStreamEnd();
  99   }
 100 }
 101
 102 bool MVPReceiver::isVdrActivated()
 103 {
 104   return vdrActivated;
 105 }
 106
 107 void MVPReceiver::Receive(UCHAR* data, int length)
 108 {
 109   pthread_mutex_lock(&processedRingLock);
 110   processed.put(data, length);
 111   if (processed.getContent() > streamChunkSize) threadSignal();
 112   pthread_mutex_unlock(&processedRingLock);
 113 }
 114
 115 void MVPReceiver::threadMethod()
 116 {
 117   ULONG headerLength = sizeof(ULONG) * 4;
 118   UCHAR buffer[streamChunkSize + headerLength];
 119   int amountReceived;
 120
 121 //   threadSetKillable(); ??
 122
 123   while(1)
 124   {
 125     threadLock();
 126     threadWaitForSignal();
 127     threadUnlock();
 128     threadCheckExit();
 129
 130     do
 131     {
 132       pthread_mutex_lock(&processedRingLock);
 133       amountReceived = processed.get(buffer+headerLength, streamChunkSize);
 134       pthread_mutex_unlock(&processedRingLock);
 135
 136       *(ULONG*)&buffer[0] = htonl(2); // stream channel
 137       *(ULONG*)&buffer[4] = htonl(streamID);
 138       *(ULONG*)&buffer[8] = htonl(0); // here insert flag: 0 = ok, data follows
 139       *(ULONG*)&buffer[12] = htonl(amountReceived);
 140
 141       tcp->sendPacket(buffer, amountReceived + headerLength);
 142     } while(processed.getContent() >= streamChunkSize);
 143   }
 144 }
 145
 146 void MVPReceiver::sendStreamEnd()
 147 {
 148   ULONG bufferLength = sizeof(ULONG) * 4;
 149   UCHAR buffer[bufferLength];
 150   *(ULONG*)&buffer[0] = htonl(2); // stream channel
 151   *(ULONG*)&buffer[4] = htonl(streamID);
 152   *(ULONG*)&buffer[8] = htonl(1); // stream end
 153   *(ULONG*)&buffer[12] = htonl(0); // zero length, no more data
 154   tcp->sendPacket(buffer, bufferLength);
 155 }
 156
 157
 158 int *MVPReceiver::mergeSpidsTpid(const int *spids,int tpid)
 159 {
 160   int *destpids;
 161   const int *runspid=spids;
 162   for (runspid=spids,destpids=mergedSpidsTpid;*runspid;runspid++,destpids++) {
 163        *destpids=*runspid;
 164   }
 165   *destpids=tpid;
 166   destpids++;
 167   *destpids=0;
 168   return mergedSpidsTpid;
 169 }