ose no more used frontends and re-open on demand
[enigma2.git] / lib / dvb / dvb.cpp
index bd3571a6d446e39cd2df5278c322fae007e2719e..b1e8ad54d96e361de1669d637eede1384d36d139 100644 (file)
@@ -18,12 +18,12 @@ DEFINE_REF(eDVBAllocatedFrontend);
 
 eDVBAllocatedFrontend::eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe): m_fe(fe)
 {
-       m_fe->m_inuse++;
+       m_fe->inc_use();
 }
 
 eDVBAllocatedFrontend::~eDVBAllocatedFrontend()
 {
-       --m_fe->m_inuse;
+       m_fe->dec_use();
 }
 
 DEFINE_REF(eDVBAllocatedDemux);
@@ -46,7 +46,7 @@ eDVBResourceManager::eDVBResourceManager()
 {
        avail = 1;
        busy = 0;
-       m_sec = new eDVBSatelliteEquipmentControl;
+       m_sec = new eDVBSatelliteEquipmentControl(m_frontend);
        if (!instance)
                instance = this;
                
@@ -197,20 +197,52 @@ void eDVBResourceManager::addAdapter(iDVBAdapter *adapter)
        for (i=0; i<num_fe; ++i)
        {
                ePtr<eDVBFrontend> frontend;
+
                if (!adapter->getFrontend(frontend, i))
+               {
+                       frontend->setSEC(m_sec);
                        m_frontend.push_back(new eDVBRegisteredFrontend(frontend, adapter));
+               }
        }
 }
 
-RESULT eDVBResourceManager::allocateFrontend(const eDVBChannelID &chid, ePtr<eDVBAllocatedFrontend> &fe)
+RESULT eDVBResourceManager::allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm)
 {
-               /* find first unused frontend. we ignore compatibility for now. */
+       ePtr<eDVBRegisteredFrontend> best;
+       int bestval = 0;
+
        for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
                if (!i->m_inuse)
+               {
+                       int c = i->m_frontend->isCompatibleWith(feparm);
+                       if (c > bestval)
+                       {
+                               bestval = c;
+                               best = i;
+                       }
+               }
+
+       if (best)
+       {
+               fe = new eDVBAllocatedFrontend(best);
+               return 0;
+       }
+       
+       fe = 0;
+       
+       return -1;
+}
+
+RESULT eDVBResourceManager::allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int nr)
+{
+       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i, --nr)
+               if ((!nr) && !i->m_inuse)
                {
                        fe = new eDVBAllocatedFrontend(i);
                        return 0;
                }
+       
+       fe = 0;
        return -1;
 }
 
@@ -262,11 +294,22 @@ RESULT eDVBResourceManager::getChannelList(ePtr<iDVBChannelList> &list)
                return -ENOENT;
 }
 
-
 RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel)
 {
                /* first, check if a channel is already existing. */
-       
+
+       if (m_cached_channel)
+       {
+               eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
+               if(channelid==cache_chan->getChannelID())
+               {
+                       eDebug("use cached_channel");
+                       channel=m_cached_channel;
+                       return 0;
+               }
+               m_cached_channel=0;
+       }
+
 //     eDebug("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
        for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
        {
@@ -279,59 +322,53 @@ RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUse
                }
        }
        
-               /* no currently available channel is tuned to this channelid. create a new one, if possible. */
-               
-               /* allocate a frontend. */
+       /* no currently available channel is tuned to this channelid. create a new one, if possible. */
+
+       if (!m_list)
+       {
+               eDebug("no channel list set!");
+               return -ENOENT;
+       }
+
+       ePtr<iDVBFrontendParameters> feparm;
+       if (m_list->getChannelFrontendData(channelid, feparm))
+       {
+               eDebug("channel not found!");
+               return -ENOENT;
+       }
+
+       /* allocate a frontend. */
        
        ePtr<eDVBAllocatedFrontend> fe;
        
-       if (allocateFrontend(channelid, fe))
+       if (allocateFrontend(fe, feparm))
                return errNoFrontend;
-       
-// will be allocated on demand:
-//     ePtr<eDVBAllocatedDemux> demux;
-//     
-//     if (allocateDemux(*fe, demux))
-//             return errNoDemux;
-       
+
        RESULT res;
        ePtr<eDVBChannel> ch;
        ch = new eDVBChannel(this, fe);
 
-       ePtr<iDVBFrontend> myfe;
-       if (!ch->getFrontend(myfe))
-               myfe->setSEC(m_sec);
-
-       res = ch->setChannel(channelid);
+       res = ch->setChannel(channelid, feparm);
        if (res)
        {
                channel = 0;
                return errChidNotFound;
        }
-       
-       channel = ch;
+       m_cached_channel = channel = ch;
+
        return 0;
 }
 
-RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel)
+RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel, int frontend_index)
 {
        ePtr<eDVBAllocatedFrontend> fe;
-       
-       if (allocateFrontend(eDVBChannelID(), fe))
+
+       if (allocateFrontendByIndex(fe, frontend_index))
                return errNoFrontend;
        
-//     ePtr<eDVBAllocatedDemux> demux;
-       //
-//     if (allocateDemux(*fe, demux))
-//             return errNoDemux;
-       
        eDVBChannel *ch;
        ch = new eDVBChannel(this, fe);
 
-       ePtr<iDVBFrontend> myfe;
-       if (!ch->getFrontend(myfe))
-               myfe->setSEC(m_sec);
-
        channel = ch;
        return 0;
 }
@@ -341,9 +378,6 @@ RESULT eDVBResourceManager::allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel)
 {
        ePtr<eDVBAllocatedDemux> demux;
        
-//     if (allocateDemux(0, demux))
-//             return errNoDemux;
-       
        eDVBChannel *ch;
        ch = new eDVBChannel(this, 0);
        
@@ -382,6 +416,85 @@ RESULT eDVBResourceManager::connectChannelAdded(const Slot1<void,eDVBChannel*> &
        return 0;
 }
 
+bool eDVBResourceManager::canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm)
+{
+       ePtr<eDVBRegisteredFrontend> best;
+       int bestval = 0;
+
+       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
+               if (!i->m_inuse)
+               {
+                       int c = i->m_frontend->isCompatibleWith(feparm);
+                       if (c > bestval)
+                               bestval = c;
+               }
+
+       return bestval>0;
+}
+
+bool eDVBResourceManager::canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID& ignore)
+{
+               /* first, check if a channel is already existing. */
+//     eDebug("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
+       for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
+       {
+//             eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
+               if (i->m_channel_id == channelid)
+               {
+//                     eDebug("found shared channel..");
+                       return true;
+               }
+       }
+
+       int *decremented_fe_usecount=NULL;
+
+       for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
+       {
+//             eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
+               if (i->m_channel_id == ignore)
+               {
+                       eDVBChannel *channel = (eDVBChannel*) &(*i->m_channel);
+                       if (channel == &(*m_cached_channel) ? channel->getUseCount() == 2 : channel->getUseCount() == 1)  // channel only used once..
+                       {
+                               ePtr<iDVBFrontend> fe;
+                               if (!i->m_channel->getFrontend(fe))
+                               {
+                                       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(m_frontend.begin()); ii != m_frontend.end(); ++ii)
+                                       {
+                                               if ( &(*fe) == &(*ii->m_frontend) )
+                                               {
+                                                       --ii->m_inuse;
+                                                       decremented_fe_usecount = &ii->m_inuse;
+                                                       break;
+                                               }
+                                       }
+                               }
+                       }
+                       break;
+               }
+       }
+
+       if (!m_list)
+       {
+               eDebug("no channel list set!");
+               return false;
+       }
+
+       ePtr<iDVBFrontendParameters> feparm;
+       if (m_list->getChannelFrontendData(channelid, feparm))
+       {
+               eDebug("channel not found!");
+               return false;
+       }
+
+       bool ret = canAllocateFrontend(feparm);
+
+       if (decremented_fe_usecount)
+               ++(*decremented_fe_usecount);
+
+       return ret;
+}
+
 DEFINE_REF(eDVBChannel);
 
 eDVBChannel::eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend): m_state(state_idle), m_mgr(mgr)
@@ -459,7 +572,7 @@ void eDVBChannel::ReleaseUse()
        }
 }
 
-RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid)
+RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontendParameters> &feparm)
 {
        if (m_channel_id)
                m_mgr->removeChannel(this);
@@ -467,24 +580,6 @@ RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid)
        if (!channelid)
                return 0;
 
-       ePtr<iDVBChannelList> list;
-       
-       if (m_mgr->getChannelList(list))
-       {
-               eDebug("no channel list set!");
-               return -ENOENT;
-       }
-       
-       eDebug("tuning to chid: ns: %08x tsid %04x onid %04x",
-               channelid.dvbnamespace.get(), channelid.transport_stream_id.get(), channelid.original_network_id.get());
-
-       ePtr<iDVBFrontendParameters> feparm;
-       if (list->getChannelFrontendData(channelid, feparm))
-       {
-               eDebug("channel not found!");
-               return -ENOENT;
-       }
-       
        if (!m_frontend)
        {
                eDebug("no frontend to tune!");
@@ -575,7 +670,7 @@ RESULT eDVBChannel::playFile(const char *file)
        m_pvr_fd_dst = open("/dev/misc/pvr", O_WRONLY);
        if (m_pvr_fd_dst < 0)
        {
-               eDebug("can't open /dev/misc/pvr - you need to buy the new(!) $$$ box! (%m)");
+               eDebug("can't open /dev/misc/pvr - you need to buy the new(!) $$$ box! (%m)"); // or wait for the driver to be improved.
                return -ENODEV;
        }
        
@@ -601,9 +696,9 @@ RESULT eDVBChannel::getLength(pts_t &len)
        return m_tstools.calcLen(len);
 }
 
-RESULT eDVBChannel::getCurrentPosition(pts_t &pos)
+RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos)
 {
-       if (!m_decoder_demux)
+       if (!decoding_demux)
                return -1;
        
        off_t begin = 0;
@@ -617,7 +712,7 @@ RESULT eDVBChannel::getCurrentPosition(pts_t &pos)
        
        pts_t now;
        
-       r = m_decoder_demux->get().getSTC(now);
+       r = decoding_demux->getSTC(now);
 
        if (r)
        {
@@ -642,7 +737,7 @@ RESULT eDVBChannel::getCurrentPosition(pts_t &pos)
        return 0;
 }
 
-RESULT eDVBChannel::seekTo(int relative, pts_t &pts)
+RESULT eDVBChannel::seekTo(iDVBDemux *decoding_demux, int relative, pts_t &pts)
 {
        int bitrate = m_tstools.calcBitrate(); /* in bits/s */
        
@@ -652,7 +747,7 @@ RESULT eDVBChannel::seekTo(int relative, pts_t &pts)
        if (relative)
        {
                pts_t now;
-               if (getCurrentPosition(now))
+               if (getCurrentPosition(decoding_demux, now))
                {
                        eDebug("seekTo: getCurrentPosition failed!");
                        return -1;
@@ -665,11 +760,11 @@ RESULT eDVBChannel::seekTo(int relative, pts_t &pts)
        
        off_t offset = (pts * (pts_t)bitrate) / 8ULL / 90000ULL;
        
-       seekToPosition(offset);
+       seekToPosition(decoding_demux, offset);
        return 0;
 }
 
-RESULT eDVBChannel::seekToPosition(const off_t &r)
+RESULT eDVBChannel::seekToPosition(iDVBDemux *decoding_demux, const off_t &r)
 {
                        /* when seeking, we have to ensure that all buffers are flushed.
                           there are basically 3 buffers:
@@ -691,8 +786,8 @@ RESULT eDVBChannel::seekToPosition(const off_t &r)
        ::ioctl(m_pvr_fd_dst, 0);
        
                /* flush ratebuffers (video, audio) */
-       if (m_decoder_demux)
-               m_decoder_demux->get().flush();
+       if (decoding_demux)
+               decoding_demux->flush();
 
                /* demux will also flush all decoder.. */
        m_pvr_thread->seek(SEEK_SET, r);