delete cached channel when playback a recorded movie (for closing frontend device)
[enigma2.git] / lib / dvb / dvb.cpp
index cfb32d09e7f771a2cf57bc81d25f53c439924237..0a5bb45e3b189fb65b6fa2904b7473f6ca5976ff 100644 (file)
@@ -9,6 +9,7 @@
 #include <sys/stat.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <sys/ioctl.h>
 
 DEFINE_REF(eDVBRegisteredFrontend);
 DEFINE_REF(eDVBRegisteredDemux);
@@ -17,12 +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);
@@ -45,7 +46,7 @@ eDVBResourceManager::eDVBResourceManager()
 {
        avail = 1;
        busy = 0;
-       m_sec = new eDVBSatelliteEquipmentControl;
+       m_sec = new eDVBSatelliteEquipmentControl(m_frontend);
        if (!instance)
                instance = this;
                
@@ -176,7 +177,6 @@ eDVBResourceManager::~eDVBResourceManager()
 {
        if (instance == this)
                instance = 0;
-
 }
 
 void eDVBResourceManager::addAdapter(iDVBAdapter *adapter)
@@ -197,32 +197,85 @@ 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;
 }
 
-RESULT eDVBResourceManager::allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux)
+RESULT eDVBResourceManager::allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap)
 {
-               /* find first unused demux which is on same adapter as frontend (or any, if PVR) */
-       for (eSmartPtrList<eDVBRegisteredDemux>::iterator i(m_demux.begin()); i != m_demux.end(); ++i)
+               /* find first unused demux which is on same adapter as frontend (or any, if PVR)
+                  never use the first one unless we need a decoding demux. */
+
+       eDebug("allocate demux");
+       eSmartPtrList<eDVBRegisteredDemux>::iterator i(m_demux.begin());
+       
+       if (i == m_demux.end())
+               return -1;
+               
+       int n=0;
+               /* FIXME: hardware demux policy */
+       if (!(cap & iDVBChannel::capDecode))
+               ++i, ++n;
+       
+       for (; i != m_demux.end(); ++i, ++n)
                if ((!i->m_inuse) && ((!fe) || (i->m_adapter == fe->m_adapter)))
                {
+                       if ((cap & iDVBChannel::capDecode) && n)
+                               continue;
+                       
                        demux = new eDVBAllocatedDemux(i);
+                       if (fe)
+                               demux->get().setSourceFrontend(fe->m_frontend->getID());
+                       else
+                               demux->get().setSourcePVR(0);
                        return 0;
                }
+       eDebug("demux not found");
        return -1;
 }
 
@@ -241,11 +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)
        {
@@ -258,57 +322,55 @@ 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;
-       
-       ePtr<eDVBAllocatedDemux> demux;
-       
-       if (allocateDemux(*fe, demux))
-               return errNoDemux;
-       
-       RESULT res;
-       eDVBChannel *ch;
-       ch = new eDVBChannel(this, fe, demux);
 
-       ePtr<iDVBFrontend> myfe;
-       if (!ch->getFrontend(myfe))
-               myfe->setSEC(m_sec);
+       RESULT res;
+       ePtr<eDVBChannel> ch;
+       ch = new eDVBChannel(this, fe);
 
-       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 (m_cached_channel)
+               m_cached_channel=0;
+
+       if (allocateFrontendByIndex(fe, frontend_index))
                return errNoFrontend;
        
-       ePtr<eDVBAllocatedDemux> demux;
-       
-       if (allocateDemux(*fe, demux))
-               return errNoDemux;
-       
        eDVBChannel *ch;
-       ch = new eDVBChannel(this, fe, demux);
-
-       ePtr<iDVBFrontend> myfe;
-       if (!ch->getFrontend(myfe))
-               myfe->setSEC(m_sec);
+       ch = new eDVBChannel(this, fe);
 
        channel = ch;
        return 0;
@@ -318,12 +380,12 @@ RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel)
 RESULT eDVBResourceManager::allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel)
 {
        ePtr<eDVBAllocatedDemux> demux;
-       
-       if (allocateDemux(0, demux))
-               return errNoDemux;
-       
+
+       if (m_cached_channel)
+               m_cached_channel=0;
+
        eDVBChannel *ch;
-       ch = new eDVBChannel(this, 0, demux);
+       ch = new eDVBChannel(this, 0);
        
        channel = ch;
        return 0;
@@ -331,7 +393,6 @@ RESULT eDVBResourceManager::allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel)
 
 RESULT eDVBResourceManager::addChannel(const eDVBChannelID &chid, eDVBChannel *ch)
 {
-       eDebug("add channel %p", ch);
        m_active_channels.push_back(active_channel(chid, ch));
        /* emit */ m_channelAdded(ch);
        return 0;
@@ -361,12 +422,90 @@ 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, eDVBAllocatedDemux *demux): m_state(state_idle), m_mgr(mgr)
+eDVBChannel::eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend): m_state(state_idle), m_mgr(mgr)
 {
        m_frontend = frontend;
-       m_demux = demux;
 
        m_pvr_thread = 0;
        
@@ -390,7 +529,6 @@ eDVBChannel::~eDVBChannel()
 
 void eDVBChannel::frontendStateChanged(iDVBFrontend*fe)
 {
-       eDebug("fe state changed!");
        int state, ourstate = 0;
        
                /* if we are already in shutdown, don't change state. */
@@ -408,10 +546,14 @@ void eDVBChannel::frontendStateChanged(iDVBFrontend*fe)
        {
                eDebug("OURSTATE: tuning");
                ourstate = state_tuning;
-       } else if (state == iDVBFrontend::stateFailed)
+       } else if (state == iDVBFrontend::stateLostLock)
        {
-               eDebug("OURSTATE: failed/unavailable");
+               eDebug("OURSTATE: lost lock");
                ourstate = state_unavailable;
+       } else if (state == iDVBFrontend::stateFailed)
+       {
+               eDebug("OURSTATE: failed");
+               ourstate = state_failed;
        } else
                eFatal("state unknown");
        
@@ -436,7 +578,7 @@ 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);
@@ -444,25 +586,6 @@ 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;
-       }
-       eDebug("allocateChannel: channel found..");
-       
        if (!m_frontend)
        {
                eDebug("no frontend to tune!");
@@ -472,7 +595,18 @@ RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid)
        m_channel_id = channelid;
        m_mgr->addChannel(channelid, this);
        m_state = state_tuning;
-       return m_frontend->get().tune(*feparm);
+                       /* if tuning fails, shutdown the channel immediately. */
+       int res;
+       res = m_frontend->get().tune(*feparm);
+       
+       if (res)
+       {
+               m_state = state_release;
+               m_stateChanged(this);
+               return res;
+       }
+       
+       return 0;
 }
 
 RESULT eDVBChannel::connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection)
@@ -492,9 +626,25 @@ RESULT eDVBChannel::setCIRouting(const eDVBCIRouting &routing)
        return -1;
 }
 
-RESULT eDVBChannel::getDemux(ePtr<iDVBDemux> &demux)
+RESULT eDVBChannel::getDemux(ePtr<iDVBDemux> &demux, int cap)
 {
-       demux = &m_demux->get();
+       eDebug("get %d demux", cap);
+       ePtr<eDVBAllocatedDemux> &our_demux = (cap & capDecode) ? m_decoder_demux : m_demux;
+       
+       if (!our_demux)
+       {
+               demux = 0;
+               
+               if (m_mgr->allocateDemux(m_frontend ? (eDVBRegisteredFrontend*)*m_frontend : (eDVBRegisteredFrontend*)0, our_demux, cap))
+                       return -1;
+               
+       }
+       
+       demux = *our_demux;
+       if (cap & capDecode)
+       {
+               our_demux = 0;
+       }
        return 0;
 }
 
@@ -526,7 +676,7 @@ 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;
        }
        
@@ -543,6 +693,8 @@ RESULT eDVBChannel::playFile(const char *file)
        
        m_pvr_thread = new eFilePushThread();
        m_pvr_thread->start(m_pvr_fd_src, m_pvr_fd_dst);
+
+       return 0;
 }
 
 RESULT eDVBChannel::getLength(pts_t &len)
@@ -550,16 +702,101 @@ 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 0
+       if (!decoding_demux)
+               return -1;
+       
        off_t begin = 0;
                /* getPTS for offset 0 is cached, so it doesn't harm. */
        int r = m_tstools.getPTS(begin, pos);
        if (r)
+       {
+               eDebug("tstools getpts(0) failed!");
                return r;
+       }
        
-       // DMX_GET_STC 
-#endif
+       pts_t now;
+       
+       r = decoding_demux->getSTC(now);
+
+       if (r)
+       {
+               eDebug("demux getSTC failed");
+               return -1;
+       }
+       
+//     eDebug("STC: %08llx PTS: %08llx, diff %lld", now, pos, now - pos);
+               /* when we are less than 10 seconds before the start, return 0. */
+               /* (we're just waiting for the timespam to start) */
+       if ((now < pos) && ((pos - now) < 90000 * 10))
+       {
+               pos = 0;
+               return 0;
+       }
+       
+       if (now < pos) /* wrap around */
+               pos = now + ((pts_t)1)<<33 - pos;
+       else
+               pos = now - pos;
+       
+       return 0;
+}
+
+RESULT eDVBChannel::seekTo(iDVBDemux *decoding_demux, int relative, pts_t &pts)
+{
+       int bitrate = m_tstools.calcBitrate(); /* in bits/s */
+       
+       if (bitrate == -1)
+               return -1;
+       
+       if (relative)
+       {
+               pts_t now;
+               if (getCurrentPosition(decoding_demux, now))
+               {
+                       eDebug("seekTo: getCurrentPosition failed!");
+                       return -1;
+               }
+               pts += now;
+       }
+       
+       if (pts < 0)
+               pts = 0;
+       
+       off_t offset = (pts * (pts_t)bitrate) / 8ULL / 90000ULL;
+       
+       seekToPosition(decoding_demux, offset);
+       return 0;
+}
+
+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:
+                          a.) the filepush's internal buffer
+                          b.) the PVR buffer (before demux)
+                          c.) the ratebuffer (after demux)
+                          
+                          it's important to clear them in the correct order, otherwise
+                          the ratebuffer (for example) would immediately refill from
+                          the not-yet-flushed PVR buffer.
+                       */
+       eDebug("eDVBChannel: seekToPosition .. %llx", r);
+       m_pvr_thread->pause();
+
+               /* flush internal filepush buffer */
+       m_pvr_thread->flush();
+
+               /* HACK: flush PVR buffer */
+       ::ioctl(m_pvr_fd_dst, 0);
+       
+               /* flush ratebuffers (video, audio) */
+       if (decoding_demux)
+               decoding_demux->flush();
+
+               /* demux will also flush all decoder.. */
+       m_pvr_thread->seek(SEEK_SET, r);
+       m_pvr_thread->resume();
        return 0;
 }