fix comment
[enigma2.git] / lib / dvb / dvb.cpp
index ac5c1a5e024c25f859ab070d65e8bf7843b02bc0..4dd5526a2d16baf0033e6d5f8d4f5618d9e9d08e 100644 (file)
@@ -2,7 +2,9 @@
 #include <lib/base/filepush.h>
 #include <lib/dvb/idvb.h>
 #include <lib/dvb/dvb.h>
+#include <lib/dvb/pmt.h>
 #include <lib/dvb/sec.h>
+#include <lib/dvb/specs.h>
 
 #include <errno.h>
 #include <sys/types.h>
@@ -42,36 +44,67 @@ DEFINE_REF(eDVBResourceManager);
 
 eDVBResourceManager *eDVBResourceManager::instance;
 
+RESULT eDVBResourceManager::getInstance(ePtr<eDVBResourceManager> &ptr)
+{
+       if (instance)
+       {
+               ptr = instance;
+               return 0;
+       }
+       return -1;
+}
+
+ePtr<eDVBResourceManager> NewResourceManagerPtr(void)
+{
+       ePtr<eDVBResourceManager> ptr;
+       eDVBResourceManager::getInstance(ptr);
+       return ptr;
+}
+
 eDVBResourceManager::eDVBResourceManager()
+       :m_releaseCachedChannelTimer(eTimer::create(eApp))
 {
        avail = 1;
        busy = 0;
-       m_sec = new eDVBSatelliteEquipmentControl(m_frontend);
+       m_sec = new eDVBSatelliteEquipmentControl(m_frontend, m_simulate_frontend);
+
        if (!instance)
                instance = this;
-               
+
                /* search available adapters... */
 
                // add linux devices
-       
+
        int num_adapter = 0;
        while (eDVBAdapterLinux::exist(num_adapter))
        {
                addAdapter(new eDVBAdapterLinux(num_adapter));
                num_adapter++;
        }
-       
-       eDebug("found %d adapter, %d frontends and %d demux", 
-               m_adapter.size(), m_frontend.size(), m_demux.size());
+
+       eDebug("found %d adapter, %d frontends(%d sim) and %d demux",
+               m_adapter.size(), m_frontend.size(), m_simulate_frontend.size(), m_demux.size());
+
+       eDVBCAService::registerChannelCallback(this);
+
+       CONNECT(m_releaseCachedChannelTimer->timeout, eDVBResourceManager::releaseCachedChannel);
 }
 
+void eDVBResourceManager::feStateChanged()
+{
+       int mask=0;
+       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
+               if (i->m_inuse)
+                       mask |= ( 1 << i->m_frontend->getSlotID() );
+       /* emit */ frontendUseMaskChanged(mask);
+}
 
 DEFINE_REF(eDVBAdapterLinux);
 eDVBAdapterLinux::eDVBAdapterLinux(int nr): m_nr(nr)
 {
                // scan frontends
        int num_fe = 0;
-       
+
        eDebug("scanning for frontends..");
        while (1)
        {
@@ -86,13 +119,21 @@ eDVBAdapterLinux::eDVBAdapterLinux(int nr): m_nr(nr)
                        break;
                ePtr<eDVBFrontend> fe;
 
-               int ok = 0;
-               fe = new eDVBFrontend(m_nr, num_fe, ok);
-               if (ok)
-                       m_frontend.push_back(fe);
+               {
+                       int ok = 0;
+                       fe = new eDVBFrontend(m_nr, num_fe, ok);
+                       if (ok)
+                               m_frontend.push_back(fe);
+               }
+               {
+                       int ok = 0;
+                       fe = new eDVBFrontend(m_nr, num_fe, ok, true);
+                       if (ok)
+                               m_simulate_frontend.push_back(fe);
+               }
                ++num_fe;
        }
-       
+
                // scan demux
        int num_demux = 0;
        while (1)
@@ -107,10 +148,10 @@ eDVBAdapterLinux::eDVBAdapterLinux(int nr): m_nr(nr)
                if (stat(filename, &s))
                        break;
                ePtr<eDVBDemux> demux;
-               
+
                demux = new eDVBDemux(m_nr, num_demux);
                m_demux.push_back(demux);
-                       
+
                ++num_demux;
        }
 }
@@ -128,12 +169,12 @@ RESULT eDVBAdapterLinux::getDemux(ePtr<eDVBDemux> &demux, int nr)
                --nr;
                ++i;
        }
-       
+
        if (i != m_demux.end())
                demux = *i;
        else
                return -1;
-               
+
        return 0;
 }
 
@@ -142,20 +183,20 @@ int eDVBAdapterLinux::getNumFrontends()
        return m_frontend.size();
 }
 
-RESULT eDVBAdapterLinux::getFrontend(ePtr<eDVBFrontend> &fe, int nr)
+RESULT eDVBAdapterLinux::getFrontend(ePtr<eDVBFrontend> &fe, int nr, bool simulate)
 {
-       eSmartPtrList<eDVBFrontend>::iterator i(m_frontend.begin());
+       eSmartPtrList<eDVBFrontend>::iterator i(simulate ? m_simulate_frontend.begin() : m_frontend.begin());
        while (nr && (i != m_frontend.end()))
        {
                --nr;
                ++i;
        }
-       
+
        if (i != m_frontend.end())
                fe = *i;
        else
                return -1;
-               
+
        return 0;
 }
 
@@ -183,9 +224,9 @@ void eDVBResourceManager::addAdapter(iDVBAdapter *adapter)
 {
        int num_fe = adapter->getNumFrontends();
        int num_demux = adapter->getNumDemux();
-       
+
        m_adapter.push_back(adapter);
-       
+
        int i;
        for (i=0; i<num_demux; ++i)
        {
@@ -194,56 +235,183 @@ void eDVBResourceManager::addAdapter(iDVBAdapter *adapter)
                        m_demux.push_back(new eDVBRegisteredDemux(demux, adapter));
        }
 
+       ePtr<eDVBRegisteredFrontend> prev_dvbt_frontend;
        for (i=0; i<num_fe; ++i)
        {
                ePtr<eDVBFrontend> frontend;
-
                if (!adapter->getFrontend(frontend, i))
                {
+                       int frontendType=0;
+                       frontend->getFrontendType(frontendType);
+                       eDVBRegisteredFrontend *new_fe = new eDVBRegisteredFrontend(frontend, adapter);
+                       CONNECT(new_fe->stateChanged, eDVBResourceManager::feStateChanged);
+                       m_frontend.push_back(new_fe);
+                       frontend->setSEC(m_sec);
+                       // we must link all dvb-t frontends ( for active antenna voltage )
+                       if (frontendType == iDVBFrontend::feTerrestrial)
+                       {
+                               if (prev_dvbt_frontend)
+                               {
+                                       prev_dvbt_frontend->m_frontend->setData(eDVBFrontend::LINKED_NEXT_PTR, (long)new_fe);
+                                       frontend->setData(eDVBFrontend::LINKED_PREV_PTR, (long)&(*prev_dvbt_frontend));
+                               }
+                               prev_dvbt_frontend = new_fe;
+                       }
+               }
+       }
+
+       prev_dvbt_frontend = 0;
+       for (i=0; i<num_fe; ++i)
+       {
+               ePtr<eDVBFrontend> frontend;
+               if (!adapter->getFrontend(frontend, i, true))
+               {
+                       int frontendType=0;
+                       frontend->getFrontendType(frontendType);
+                       eDVBRegisteredFrontend *new_fe = new eDVBRegisteredFrontend(frontend, adapter);
+//                     CONNECT(new_fe->stateChanged, eDVBResourceManager::feStateChanged);
+                       m_simulate_frontend.push_back(new_fe);
                        frontend->setSEC(m_sec);
-                       m_frontend.push_back(new eDVBRegisteredFrontend(frontend, adapter));
+                       // we must link all dvb-t frontends ( for active antenna voltage )
+                       if (frontendType == iDVBFrontend::feTerrestrial)
+                       {
+                               if (prev_dvbt_frontend)
+                               {
+                                       prev_dvbt_frontend->m_frontend->setData(eDVBFrontend::LINKED_NEXT_PTR, (long)new_fe);
+                                       frontend->setData(eDVBFrontend::LINKED_PREV_PTR, (long)&(*prev_dvbt_frontend));
+                               }
+                               prev_dvbt_frontend = new_fe;
+                       }
                }
        }
+
+}
+
+PyObject *eDVBResourceManager::setFrontendSlotInformations(ePyObject list)
+{
+       if (!PyList_Check(list))
+       {
+               PyErr_SetString(PyExc_StandardError, "eDVBResourceManager::setFrontendSlotInformations argument should be a python list");
+               return NULL;
+       }
+       if ((unsigned int)PyList_Size(list) != m_frontend.size())
+       {
+               char blasel[256];
+               sprintf(blasel, "eDVBResourceManager::setFrontendSlotInformations list size incorrect %d frontends avail, but %d entries in slotlist",
+                       m_frontend.size(), PyList_Size(list));
+               PyErr_SetString(PyExc_StandardError, blasel);
+               return NULL;
+       }
+       int pos=0;
+       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
+       {
+               ePyObject obj = PyList_GET_ITEM(list, pos++);
+               if (!i->m_frontend->setSlotInfo(obj))
+                       return NULL;
+       }
+       pos=0;
+       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_simulate_frontend.begin()); i != m_simulate_frontend.end(); ++i)
+       {
+               ePyObject obj = PyList_GET_ITEM(list, pos++);
+               if (!i->m_frontend->setSlotInfo(obj))
+                       return NULL;
+       }
+       Py_RETURN_NONE;
 }
 
-RESULT eDVBResourceManager::allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm)
+RESULT eDVBResourceManager::allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm, bool simulate)
 {
+       eSmartPtrList<eDVBRegisteredFrontend> &frontends = simulate ? m_simulate_frontend : m_frontend;
        ePtr<eDVBRegisteredFrontend> best;
        int bestval = 0;
+       int foundone = 0;
+
+       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(frontends.begin()); i != frontends.end(); ++i)
+       {
+               int c = i->m_frontend->isCompatibleWith(feparm);
+
+               if (c)  /* if we have at least one frontend which is compatible with the source, flag this. */
+                       foundone = 1;
 
-       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
                if (!i->m_inuse)
                {
-                       int c = i->m_frontend->isCompatibleWith(feparm);
+//                     eDebug("Slot %d, score %d", i->m_frontend->getSlotID(), c);
                        if (c > bestval)
                        {
                                bestval = c;
                                best = i;
                        }
                }
+//             else
+//                     eDebug("Slot %d, score %d... but BUSY!!!!!!!!!!!", i->m_frontend->getSlotID(), c);
+       }
 
        if (best)
        {
                fe = new eDVBAllocatedFrontend(best);
                return 0;
        }
-       
+
        fe = 0;
-       
-       return -1;
+
+       if (foundone)
+               return errAllSourcesBusy;
+       else
+               return errNoSourceFound;
 }
 
-RESULT eDVBResourceManager::allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int nr)
+RESULT eDVBResourceManager::allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int slot_index)
 {
-       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i, --nr)
-               if ((!nr) && !i->m_inuse)
+       int err = errNoSourceFound;
+       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
+               if (!i->m_inuse && i->m_frontend->getSlotID() == slot_index)
                {
+                       // check if another slot linked to this is in use
+                       long tmp;
+                       i->m_frontend->getData(eDVBFrontend::SATPOS_DEPENDS_PTR, tmp);
+                       if ( tmp != -1 )
+                       {
+                               eDVBRegisteredFrontend *satpos_depends_to_fe = (eDVBRegisteredFrontend *)tmp;
+                               if (satpos_depends_to_fe->m_inuse)
+                               {
+                                       eDebug("another satpos depending frontend is in use.. so allocateFrontendByIndex not possible!");
+                                       err = errAllSourcesBusy;
+                                       goto alloc_fe_by_id_not_possible;
+                               }
+                       }
+                       else // check linked tuners
+                       {
+                               i->m_frontend->getData(eDVBFrontend::LINKED_NEXT_PTR, tmp);
+                               while ( tmp != -1 )
+                               {
+                                       eDVBRegisteredFrontend *next = (eDVBRegisteredFrontend *) tmp;
+                                       if (next->m_inuse)
+                                       {
+                                               eDebug("another linked frontend is in use.. so allocateFrontendByIndex not possible!");
+                                               err = errAllSourcesBusy;
+                                               goto alloc_fe_by_id_not_possible;
+                                       }
+                                       next->m_frontend->getData(eDVBFrontend::LINKED_NEXT_PTR, tmp);
+                               }
+                               i->m_frontend->getData(eDVBFrontend::LINKED_PREV_PTR, tmp);
+                               while ( tmp != -1 )
+                               {
+                                       eDVBRegisteredFrontend *prev = (eDVBRegisteredFrontend *) tmp;
+                                       if (prev->m_inuse)
+                                       {
+                                               eDebug("another linked frontend is in use.. so allocateFrontendByIndex not possible!");
+                                               err = errAllSourcesBusy;
+                                               goto alloc_fe_by_id_not_possible;
+                                       }
+                                       prev->m_frontend->getData(eDVBFrontend::LINKED_PREV_PTR, tmp);
+                               }
+                       }
                        fe = new eDVBAllocatedFrontend(i);
                        return 0;
                }
-       
+alloc_fe_by_id_not_possible:
        fe = 0;
-       return -1;
+       return err;
 }
 
 RESULT eDVBResourceManager::allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap)
@@ -253,28 +421,80 @@ RESULT eDVBResourceManager::allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBA
 
        eDebug("allocate demux");
        eSmartPtrList<eDVBRegisteredDemux>::iterator i(m_demux.begin());
-       
+
+       int n=0;
+
        if (i == m_demux.end())
                return -1;
-               
-       int n=0;
+
+       ePtr<eDVBRegisteredDemux> unused;
+
+       if (m_demux.size() < 5)
+       {
                /* 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))
+               {
+                       if (m_demux.size() > 2)  /* assumed to be true, otherwise we have lost anyway */
+                       {
+                               ++i, ++n;
+                               ++i, ++n;
+                       }
+               }
+
+               for (; i != m_demux.end(); ++i, ++n)
+               {
+                       int is_decode = n < 2;
+
+                       int in_use = is_decode ? (i->m_demux->getRefCount() != 2) : i->m_inuse;
+
+                       if ((!in_use) && ((!fe) || (i->m_adapter == fe->m_adapter)))
+                       {
+                               if ((cap & iDVBChannel::capDecode) && !is_decode)
+                                       continue;
+                               unused = i;
+                               break;
+                       }
+               }
+       }
+       else // we asume dm8000
+       {
+               for (; i != m_demux.end(); ++i, ++n)
                {
-                       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;
+                       {
+                               if (!i->m_inuse)
+                               {
+                                       if (!unused)
+                                               unused = i;
+                               }
+                               else if (i->m_adapter == fe->m_adapter &&
+                                   i->m_demux->getSource() == fe->m_frontend->getDVBID())
+                               {
+                                       demux = new eDVBAllocatedDemux(i);
+                                       return 0;
+                               }
+                       }
+                       else if (n == 4) // always use demux4 for PVR (demux 4 can not descramble...)
+                       {
+                               if (i->m_inuse) {
+                                       demux = new eDVBAllocatedDemux(i);
+                                       return 0;
+                               }
+                               unused = i;
+                       }
                }
+       }
+
+       if (unused)
+       {
+               demux = new eDVBAllocatedDemux(unused);
+               if (fe)
+                       demux->get().setSourceFrontend(fe->m_frontend->getDVBID());
+               else
+                       demux->get().setSourcePVR(0);
+               return 0;
+       }
+
        eDebug("demux not found");
        return -1;
 }
@@ -294,59 +514,74 @@ RESULT eDVBResourceManager::getChannelList(ePtr<iDVBChannelList> &list)
                return -ENOENT;
 }
 
-RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel)
+#define eDebugNoSimulate(x...) \
+       do { \
+               if (!simulate) \
+                       eDebug(x); \
+       } while(0)
+//             else \
+//             { \
+//                     eDebugNoNewLine("SIMULATE:"); \
+//                     eDebug(x); \
+//             } \
+
+
+RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel, bool simulate)
 {
                /* first, check if a channel is already existing. */
+       std::list<active_channel> &active_channels = simulate ? m_active_simulate_channels : m_active_channels;
 
-       if (m_cached_channel)
+       if (!simulate && m_cached_channel)
        {
                eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
                if(channelid==cache_chan->getChannelID())
                {
                        eDebug("use cached_channel");
-                       channel=m_cached_channel;
+                       channel = m_cached_channel;
                        return 0;
                }
+               m_cached_channel_state_changed_conn.disconnect();
                m_cached_channel=0;
+               m_releaseCachedChannelTimer->stop();
        }
 
-//     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)
+       eDebugNoSimulate("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
+       for (std::list<active_channel>::iterator i(active_channels.begin()); i != 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());
+               eDebugNoSimulate("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..");
+                       eDebugNoSimulate("found shared channel..");
                        channel = i->m_channel;
                        return 0;
                }
        }
-       
+
        /* 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;
+               eDebugNoSimulate("no channel list set!");
+               return errNoChannelList;
        }
 
        ePtr<iDVBFrontendParameters> feparm;
        if (m_list->getChannelFrontendData(channelid, feparm))
        {
-               eDebug("channel not found!");
-               return -ENOENT;
+               eDebugNoSimulate("channel not found!");
+               return errChannelNotInList;
        }
 
        /* allocate a frontend. */
-       
+
        ePtr<eDVBAllocatedFrontend> fe;
-       
-       if (allocateFrontend(fe, feparm))
-               return errNoFrontend;
+
+       int err = allocateFrontend(fe, feparm, simulate);
+       if (err)
+               return err;
 
        RESULT res;
-       ePtr<eDVBChannel> ch;
-       ch = new eDVBChannel(this, fe);
+       ePtr<eDVBChannel> ch = new eDVBChannel(this, fe);
 
        res = ch->setChannel(channelid, feparm);
        if (res)
@@ -354,25 +589,65 @@ RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUse
                channel = 0;
                return errChidNotFound;
        }
-       m_cached_channel = channel = ch;
+
+       if (simulate)
+               channel = ch;
+       else
+       {
+               m_cached_channel = channel = ch;
+               m_cached_channel_state_changed_conn =
+                       CONNECT(ch->m_stateChanged,eDVBResourceManager::DVBChannelStateChanged);
+       }
 
        return 0;
 }
 
-RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel, int frontend_index)
+void eDVBResourceManager::DVBChannelStateChanged(iDVBChannel *chan)
+{
+       int state=0;
+       chan->getState(state);
+       switch (state)
+       {
+               case iDVBChannel::state_release:
+               case iDVBChannel::state_ok:
+               {
+                       eDebug("stop release channel timer");
+                       m_releaseCachedChannelTimer->stop();
+                       break;
+               }
+               case iDVBChannel::state_last_instance:
+               {
+                       eDebug("start release channel timer");
+                       m_releaseCachedChannelTimer->start(3000, true);
+                       break;
+               }
+               default: // ignore all other events
+                       break;
+       }
+}
+
+void eDVBResourceManager::releaseCachedChannel()
+{
+       eDebug("release cached channel (timer timeout)");
+       m_cached_channel=0;
+}
+
+RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel, int slot_index)
 {
        ePtr<eDVBAllocatedFrontend> fe;
 
        if (m_cached_channel)
+       {
+               m_cached_channel_state_changed_conn.disconnect();
                m_cached_channel=0;
+               m_releaseCachedChannelTimer->stop();
+       }
 
-       if (allocateFrontendByIndex(fe, frontend_index))
-               return errNoFrontend;
-       
-       eDVBChannel *ch;
-       ch = new eDVBChannel(this, fe);
+       int err = allocateFrontendByIndex(fe, slot_index);
+       if (err)
+               return err;
 
-       channel = ch;
+       channel = new eDVBChannel(this, fe);
        return 0;
 }
 
@@ -380,36 +655,56 @@ RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel, in
 RESULT eDVBResourceManager::allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel)
 {
        ePtr<eDVBAllocatedDemux> demux;
-       
-       eDVBChannel *ch;
-       ch = new eDVBChannel(this, 0);
-       
-       channel = ch;
+
+       if (m_cached_channel && m_releaseCachedChannelTimer->isActive())
+       {
+               m_cached_channel_state_changed_conn.disconnect();
+               m_cached_channel=0;
+               m_releaseCachedChannelTimer->stop();
+       }
+
+       channel = new eDVBChannel(this, 0);
        return 0;
 }
 
 RESULT eDVBResourceManager::addChannel(const eDVBChannelID &chid, eDVBChannel *ch)
 {
-       m_active_channels.push_back(active_channel(chid, ch));
-       /* emit */ m_channelAdded(ch);
+       ePtr<iDVBFrontend> fe;
+       if (!ch->getFrontend(fe))
+       {
+               eDVBFrontend *frontend = (eDVBFrontend*)&(*fe);
+               if (frontend->is_simulate())
+                       m_active_simulate_channels.push_back(active_channel(chid, ch));
+               else
+               {
+                       m_active_channels.push_back(active_channel(chid, ch));
+                       /* emit */ m_channelAdded(ch);
+               }
+       }
        return 0;
 }
 
 RESULT eDVBResourceManager::removeChannel(eDVBChannel *ch)
 {
-       int cnt = 0;
-       for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end();)
+       ePtr<iDVBFrontend> fe;
+       if (!ch->getFrontend(fe))
        {
-               if (i->m_channel == ch)
+               eDVBFrontend *frontend = (eDVBFrontend*)&(*fe);
+               std::list<active_channel> &active_channels = frontend->is_simulate() ? m_active_simulate_channels : m_active_channels;
+               int cnt = 0;
+               for (std::list<active_channel>::iterator i(active_channels.begin()); i != active_channels.end();)
                {
-                       i = m_active_channels.erase(i);
-                       ++cnt;
-               } else
-                       ++i;
+                       if (i->m_channel == ch)
+                       {
+                               i = active_channels.erase(i);
+                               ++cnt;
+                       } else
+                               ++i;
+               }
+               ASSERT(cnt == 1);
+               if (cnt == 1)
+                       return 0;
        }
-       ASSERT(cnt == 1);
-       if (cnt == 1)
-               return 0;
        return -ENOENT;
 }
 
@@ -419,55 +714,99 @@ RESULT eDVBResourceManager::connectChannelAdded(const Slot1<void,eDVBChannel*> &
        return 0;
 }
 
-bool eDVBResourceManager::canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm)
+int eDVBResourceManager::canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm, bool simulate)
 {
+       eSmartPtrList<eDVBRegisteredFrontend> &frontends = simulate ? m_simulate_frontend : m_frontend;
        ePtr<eDVBRegisteredFrontend> best;
        int bestval = 0;
 
-       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
+       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(frontends.begin()); i != frontends.end(); ++i)
                if (!i->m_inuse)
                {
                        int c = i->m_frontend->isCompatibleWith(feparm);
                        if (c > bestval)
                                bestval = c;
                }
+       return bestval;
+}
 
-       return bestval>0;
+int tuner_type_channel_default(ePtr<iDVBChannelList> &channellist, const eDVBChannelID &chid)
+{
+       if (channellist)
+       {
+               ePtr<iDVBFrontendParameters> feparm;
+               if (!channellist->getChannelFrontendData(chid, feparm))
+               {
+                       int system;
+                       if (!feparm->getSystem(system))
+                       {
+                               switch(system)
+                               {
+                                       case iDVBFrontend::feSatellite:
+                                               return 50000;
+                                       case iDVBFrontend::feCable:
+                                               return 40000;
+                                       case iDVBFrontend::feTerrestrial:
+                                               return 30000;
+                                       default:
+                                               break;
+                               }
+                       }
+               }
+       }
+       return 0;
 }
 
-bool eDVBResourceManager::canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID& ignore)
+int eDVBResourceManager::canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID& ignore, bool simulate)
 {
+       std::list<active_channel> &active_channels = simulate ? m_active_simulate_channels : m_active_channels;
+       int ret=0;
+       if (!simulate && m_cached_channel)
+       {
+               eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
+               if(channelid==cache_chan->getChannelID())
+                       return tuner_type_channel_default(m_list, channelid);
+       }
+
                /* 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)
+       for (std::list<active_channel>::iterator i(active_channels.begin()); i != 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;
+                       return tuner_type_channel_default(m_list, channelid);
                }
        }
 
-       int *decremented_fe_usecount=NULL;
+       int *decremented_cached_channel_fe_usecount=NULL,
+               *decremented_fe_usecount=NULL;
 
-       for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
+       for (std::list<active_channel>::iterator i(active_channels.begin()); i != active_channels.end(); ++i)
        {
+               eSmartPtrList<eDVBRegisteredFrontend> &frontends = simulate ? m_simulate_frontend : m_frontend;
 //             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..
+                       // one eUsePtr<iDVBChannel> is used in eDVBServicePMTHandler
+                       // another on eUsePtr<iDVBChannel> is used in the eDVBScan instance used in eDVBServicePMTHandler (for SDT scan)
+                       // so we must check here if usecount is 3 (when the channel is equal to the cached channel)
+                       // or 2 when the cached channel is not equal to the compared channel
+                       if (channel == &(*m_cached_channel) ? channel->getUseCount() == 3 : channel->getUseCount() == 2)  // 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)
+                                       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(frontends.begin()); ii != frontends.end(); ++ii)
                                        {
                                                if ( &(*fe) == &(*ii->m_frontend) )
                                                {
                                                        --ii->m_inuse;
                                                        decremented_fe_usecount = &ii->m_inuse;
+                                                       if (channel == &(*m_cached_channel))
+                                                               decremented_cached_channel_fe_usecount = decremented_fe_usecount;
                                                        break;
                                                }
                                        }
@@ -477,93 +816,618 @@ bool eDVBResourceManager::canAllocateChannel(const eDVBChannelID &channelid, con
                }
        }
 
+       if (!decremented_cached_channel_fe_usecount)
+       {
+               if (m_cached_channel)
+               {
+                       eDVBChannel *channel = (eDVBChannel*) &(*m_cached_channel);
+                       if (channel->getUseCount() == 1)
+                       {
+                               ePtr<iDVBFrontend> fe;
+                               if (!channel->getFrontend(fe))
+                               {
+                                       eSmartPtrList<eDVBRegisteredFrontend> &frontends = simulate ? m_simulate_frontend : m_frontend;
+                                       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(frontends.begin()); ii != frontends.end(); ++ii)
+                                       {
+                                               if ( &(*fe) == &(*ii->m_frontend) )
+                                               {
+                                                       --ii->m_inuse;
+                                                       decremented_cached_channel_fe_usecount = &ii->m_inuse;
+                                                       break;
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+       else
+               decremented_cached_channel_fe_usecount=NULL;
+
+       ePtr<iDVBFrontendParameters> feparm;
+
        if (!m_list)
        {
                eDebug("no channel list set!");
-               return false;
+               goto error;
        }
 
-       ePtr<iDVBFrontendParameters> feparm;
        if (m_list->getChannelFrontendData(channelid, feparm))
        {
                eDebug("channel not found!");
-               return false;
+               goto error;
        }
 
-       bool ret = canAllocateFrontend(feparm);
+       ret = canAllocateFrontend(feparm, simulate);
 
+error:
        if (decremented_fe_usecount)
                ++(*decremented_fe_usecount);
+       if (decremented_cached_channel_fe_usecount)
+               ++(*decremented_cached_channel_fe_usecount);
 
        return ret;
 }
 
-DEFINE_REF(eDVBChannel);
-
-eDVBChannel::eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend): m_state(state_idle), m_mgr(mgr)
-{
-       m_frontend = frontend;
-
-       m_pvr_thread = 0;
-       
-       if (m_frontend)
-               m_frontend->get().connectStateChange(slot(*this, &eDVBChannel::frontendStateChanged), m_conn_frontendStateChanged);
-}
-
-eDVBChannel::~eDVBChannel()
+bool eDVBResourceManager::canMeasureFrontendInputPower()
 {
-       if (m_channel_id)
-               m_mgr->removeChannel(this);
-       
-       if (m_pvr_thread)
+       for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
        {
-               m_pvr_thread->stop();
-               ::close(m_pvr_fd_src);
-               ::close(m_pvr_fd_dst);
-               delete m_pvr_thread;
+               return i->m_frontend->readInputpower() >= 0;
        }
+       return false;
 }
 
-void eDVBChannel::frontendStateChanged(iDVBFrontend*fe)
+class eDVBChannelFilePush: public eFilePushThread
 {
-       int state, ourstate = 0;
-       
-               /* if we are already in shutdown, don't change state. */
-       if (m_state == state_release)
-               return;
-       
-       if (fe->getState(state))
-               return;
-       
-       if (state == iDVBFrontend::stateLock)
-       {
-               eDebug("OURSTATE: ok");
-               ourstate = state_ok;
-       } else if (state == iDVBFrontend::stateTuning)
-       {
-               eDebug("OURSTATE: tuning");
-               ourstate = state_tuning;
-       } else if (state == iDVBFrontend::stateLostLock)
-       {
-               eDebug("OURSTATE: lost lock");
-               ourstate = state_unavailable;
-       } else if (state == iDVBFrontend::stateFailed)
+public:
+       eDVBChannelFilePush() { setIFrameSearch(0); setTimebaseChange(0); }
+       void setIFrameSearch(int enabled) { m_iframe_search = enabled; m_iframe_state = 0; }
+
+                       /* "timebase change" is for doing trickmode playback at an exact speed, even when pictures are skipped. */
+                       /* you need to set it to 1/16 if you want 16x playback, for example. you need video master sync. */
+       void setTimebaseChange(int ratio) { m_timebase_change = ratio; } /* 16bit fixpoint, 0 for disable */
+protected:
+       int m_iframe_search, m_iframe_state, m_pid;
+       int m_timebase_change;
+       int filterRecordData(const unsigned char *data, int len, size_t &current_span_remaining);
+};
+
+int eDVBChannelFilePush::filterRecordData(const unsigned char *_data, int len, size_t &current_span_remaining)
+{
+#if 0
+       if (m_timebase_change)
        {
-               eDebug("OURSTATE: failed");
-               ourstate = state_failed;
-       } else
-               eFatal("state unknown");
-       
-       if (ourstate != m_state)
+               eDebug("timebase change: %d", m_timebase_change);
+               int offset;
+               for (offset = 0; offset < len; offset += 188)
+               {
+                       unsigned char *pkt = (unsigned char*)_data + offset;
+                       if (pkt[1] & 0x40) /* pusi */
+                       {
+                               if (pkt[3] & 0x20) // adaption field present?
+                                       pkt += pkt[4] + 4 + 1;  /* skip adaption field and header */
+                               else
+                                       pkt += 4; /* skip header */
+                               if (pkt[0] || pkt[1] || (pkt[2] != 1))
+                               {
+                                       eWarning("broken startcode");
+                                       continue;
+                               }
+
+                               pts_t pts = 0;
+
+                               if (pkt[7] & 0x80) // PTS present?
+                               {
+                                       pts  = ((unsigned long long)(pkt[ 9]&0xE))  << 29;
+                                       pts |= ((unsigned long long)(pkt[10]&0xFF)) << 22;
+                                       pts |= ((unsigned long long)(pkt[11]&0xFE)) << 14;
+                                       pts |= ((unsigned long long)(pkt[12]&0xFF)) << 7;
+                                       pts |= ((unsigned long long)(pkt[13]&0xFE)) >> 1;
+
+#if 0
+                                       off_t off = 0;
+                                       RESULT r = m_tstools.fixupPTS(off, pts);
+                                       if (r)
+                                               eWarning("fixup PTS while trickmode playback failed.\n");
+#endif
+
+                                       int sec = pts / 90000;
+                                       int frm = pts % 90000;
+                                       int min = sec / 60;
+                                       sec %= 60;
+                                       int hr = min / 60;
+                                       min %= 60;
+                                       int d = hr / 24;
+                                       hr %= 24;
+
+//                                     eDebug("original, fixed pts: %016llx %d:%02d:%02d:%02d:%05d", pts, d, hr, min, sec, frm);
+
+                                       pts += 0x80000000LL;
+                                       pts *= m_timebase_change;
+                                       pts >>= 16;
+
+                                       sec = pts / 90000;
+                                       frm = pts % 90000;
+                                       min = sec / 60;
+                                       sec %= 60;
+                                       hr = min / 60;
+                                       min %= 60;
+                                       d = hr / 24;
+                                       hr %= 24;
+
+//                                     eDebug("new pts (after timebase change): %016llx %d:%02d:%02d:%02d:%05d", pts, d, hr, min, sec, frm);
+
+                                       pkt[9] &= ~0xE;
+                                       pkt[10] = 0;
+                                       pkt[11] &= ~1;
+                                       pkt[12] = 0;
+                                       pkt[13] &= ~1;
+
+                                       pkt[9]  |= (pts >> 29) & 0xE;
+                                       pkt[10] |= (pts >> 22) & 0xFF;
+                                       pkt[11] |= (pts >> 14) & 0xFE;
+                                       pkt[12] |= (pts >> 7) & 0xFF;
+                                       pkt[13] |= (pts << 1) & 0xFE;
+                               }
+                       }
+               }
+       }
+#endif
+
+#if 1 /* This codepath is required on Broadcom-based Dreamboxes (DM800, DM8000) and strips away non-I-frames. */
+       if (!m_iframe_search)
+               return len;
+
+       unsigned char *data = (unsigned char*)_data; /* remove that const. we know what we are doing. */
+
+//     eDebug("filterRecordData, size=%d (mod 188=%d), first byte is %02x", len, len %188, data[0]);
+
+       unsigned char *d = data;
+       while ((d + 3 < data + len) && (d = (unsigned char*)memmem(d, data + len - d, "\x00\x00\x01", 3)))
+       {
+               int offset = d - data;
+               int ts_offset = offset - offset % 188; /* offset to the start of TS packet */
+               unsigned char *ts = data + ts_offset;
+               int pid = ((ts[1] << 8) | ts[2]) & 0x1FFF;
+
+               if ((d[3] == 0) && (m_pid == pid))  /* picture start */
+               {
+                       int picture_type = (d[5] >> 3) & 7;
+                       d += 4;
+
+//                     eDebug("%d-frame at %d, offset in TS packet: %d, pid=%04x", picture_type, offset, offset % 188, pid);
+
+                       if (m_iframe_state == 1)
+                       {
+                                       /* we are allowing data, and stop allowing data on the next frame.
+                                          we now found a frame. so stop here. */
+                               memset(data + offset, 0, 188 - (offset%188)); /* zero out rest of TS packet */
+                               current_span_remaining = 0;
+                               m_iframe_state = 0;
+                               unsigned char *fts = ts + 188;
+                               while (fts < (data + len))
+                               {
+                                       fts[1] |= 0x1f;
+                                       fts[2] |= 0xff; /* drop packet */
+                                       fts += 188;
+                               }
+
+                               return len; // ts_offset + 188; /* deliver this packet, but not more. */
+                       } else
+                       {
+                               if (picture_type != 1) /* we are only interested in I frames */
+                                       continue;
+
+                               unsigned char *fts = data;
+                               while (fts < ts)
+                               {
+                                       fts[1] |= 0x1f;
+                                       fts[2] |= 0xff; /* drop packet */
+
+                                       fts += 188;
+                               }
+                                               /* force payload only */
+                               ts[3] &= ~0x30;
+                               ts[3] |=  0x10;
+
+//                             memset(ts + 4, 0xFF, (offset % 188) - 4);
+
+                               m_iframe_state = 1;
+                       }
+               } else if ((d[3] & 0xF0) == 0xE0) /* video stream */
+               {
+                       if (m_pid != pid)
+                       {
+                               eDebug("now locked to pid %04x", pid);
+                               m_pid = pid;
+                       }
+//                     m_pid = 0x6e;
+                       d += 4;
+               } else
+                       d += 4; /* ignore */
+       }
+
+       if (m_iframe_state == 1)
+               return len;
+       else
+               return 0; /* we need find an iframe first */
+#else
+       return len;
+#endif
+}
+
+DEFINE_REF(eDVBChannel);
+
+eDVBChannel::eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend): m_state(state_idle), m_mgr(mgr)
+{
+       m_frontend = frontend;
+
+       m_pvr_thread = 0;
+
+       m_skipmode_n = m_skipmode_m = 0;
+
+       if (m_frontend)
+               m_frontend->get().connectStateChange(slot(*this, &eDVBChannel::frontendStateChanged), m_conn_frontendStateChanged);
+}
+
+eDVBChannel::~eDVBChannel()
+{
+       if (m_channel_id)
+               m_mgr->removeChannel(this);
+
+       stopFile();
+}
+
+void eDVBChannel::frontendStateChanged(iDVBFrontend*fe)
+{
+       int state, ourstate = 0;
+
+               /* if we are already in shutdown, don't change state. */
+       if (m_state == state_release)
+               return;
+
+       if (fe->getState(state))
+               return;
+
+       if (state == iDVBFrontend::stateLock)
+       {
+               eDebug("OURSTATE: ok");
+               ourstate = state_ok;
+       } else if (state == iDVBFrontend::stateTuning)
+       {
+               eDebug("OURSTATE: tuning");
+               ourstate = state_tuning;
+       } else if (state == iDVBFrontend::stateLostLock)
+       {
+                       /* on managed channels, we try to retune in order to re-acquire lock. */
+               if (m_current_frontend_parameters)
+               {
+                       eDebug("OURSTATE: lost lock, trying to retune");
+                       ourstate = state_tuning;
+                       m_frontend->get().tune(*m_current_frontend_parameters);
+               } else
+                       /* on unmanaged channels, we don't do this. the client will do this. */
+               {
+                       eDebug("OURSTATE: lost lock, unavailable now.");
+                       ourstate = state_unavailable;
+               }
+       } else if (state == iDVBFrontend::stateFailed)
+       {
+               eDebug("OURSTATE: failed");
+               ourstate = state_failed;
+       } else
+               eFatal("state unknown");
+
+       if (ourstate != m_state)
        {
                m_state = ourstate;
                m_stateChanged(this);
        }
 }
 
+void eDVBChannel::pvrEvent(int event)
+{
+       switch (event)
+       {
+       case eFilePushThread::evtEOF:
+               eDebug("eDVBChannel: End of file!");
+               m_event(this, evtEOF);
+               break;
+       case eFilePushThread::evtUser: /* start */
+               eDebug("SOF");
+               m_event(this, evtSOF);
+               break;
+       }
+}
+
+void eDVBChannel::cueSheetEvent(int event)
+{
+               /* we might end up here if playing failed or stopped, but the client hasn't (yet) noted. */
+       if (!m_pvr_thread)
+               return;
+       switch (event)
+       {
+       case eCueSheet::evtSeek:
+               eDebug("seek.");
+               flushPVR(m_cue->m_decoding_demux);
+               break;
+       case eCueSheet::evtSkipmode:
+       {
+               {
+                       m_cue->m_lock.WrLock();
+                       m_cue->m_seek_requests.push_back(std::pair<int, pts_t>(1, 0)); /* resync */
+                       m_cue->m_lock.Unlock();
+                       eRdLocker l(m_cue->m_lock);
+                       if (m_cue->m_skipmode_ratio)
+                       {
+                               int bitrate = m_tstools.calcBitrate(); /* in bits/s */
+                               eDebug("skipmode ratio is %lld:90000, bitrate is %d bit/s", m_cue->m_skipmode_ratio, bitrate);
+                                               /* i agree that this might look a bit like black magic. */
+                               m_skipmode_n = 512*1024; /* must be 1 iframe at least. */
+                               m_skipmode_m = bitrate / 8 / 90000 * m_cue->m_skipmode_ratio / 8;
+
+                               if (m_cue->m_skipmode_ratio < 0)
+                                       m_skipmode_m -= m_skipmode_n;
+
+                               eDebug("resolved to: %d %d", m_skipmode_m, m_skipmode_n);
+
+                               if (abs(m_skipmode_m) < abs(m_skipmode_n))
+                               {
+                                       eWarning("something is wrong with this calculation");
+                                       m_skipmode_n = m_skipmode_m = 0;
+                               }
+                       } else
+                       {
+                               eDebug("skipmode ratio is 0, normal play");
+                               m_skipmode_n = m_skipmode_m = 0;
+                       }
+               }
+               m_pvr_thread->setIFrameSearch(m_skipmode_n != 0);
+               if (m_cue->m_skipmode_ratio != 0)
+                       m_pvr_thread->setTimebaseChange(0x10000 * 9000 / (m_cue->m_skipmode_ratio / 10)); /* negative values are also ok */
+               else
+                       m_pvr_thread->setTimebaseChange(0); /* normal playback */
+               eDebug("flush pvr");
+               flushPVR(m_cue->m_decoding_demux);
+               eDebug("done");
+               break;
+       }
+       case eCueSheet::evtSpanChanged:
+       {
+               m_source_span.clear();
+               for (std::list<std::pair<pts_t, pts_t> >::const_iterator i(m_cue->m_spans.begin()); i != m_cue->m_spans.end(); ++i)
+               {
+                       off_t offset_in, offset_out;
+                       pts_t pts_in = i->first, pts_out = i->second;
+                       if (m_tstools.getOffset(offset_in, pts_in) || m_tstools.getOffset(offset_out, pts_out))
+                       {
+                               eDebug("span translation failed.\n");
+                               continue;
+                       }
+                       eDebug("source span: %llx .. %llx, translated to %llx..%llx", pts_in, pts_out, offset_in, offset_out);
+                       m_source_span.push_back(std::pair<off_t, off_t>(offset_in, offset_out));
+               }
+               break;
+       }
+       }
+}
+
+       /* align toward zero */
+static inline long long align(long long x, int align)
+{
+       int sign = x < 0;
+
+       if (sign)
+               x = -x;
+
+       x -= x % align;
+
+       if (sign)
+               x = -x;
+
+       return x;
+}
+
+       /* remember, this gets called from another thread. */
+void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off_t &start, size_t &size)
+{
+       const int blocksize = 188;
+       unsigned int max = align(10*1024*1024, blocksize);
+       current_offset = align(current_offset, blocksize);
+
+       if (!m_cue)
+       {
+               eDebug("no cue sheet. forcing normal play");
+               start = current_offset;
+               size = max;
+               return;
+       }
+
+       m_cue->m_lock.RdLock();
+       if (!m_cue->m_decoding_demux)
+       {
+               start = current_offset;
+               size = max;
+               eDebug("getNextSourceSpan, no decoding demux. forcing normal play");
+               m_cue->m_lock.Unlock();
+               return;
+       }
+
+       if (m_skipmode_n)
+       {
+               eDebug("skipmode %d:%d", m_skipmode_m, m_skipmode_n);
+               max = align(m_skipmode_n, blocksize);
+       }
+
+       eDebug("getNextSourceSpan, current offset is %08llx, m_skipmode_m = %d!", current_offset, m_skipmode_m);
+
+       current_offset += align(m_skipmode_m, blocksize);
+
+       while (!m_cue->m_seek_requests.empty())
+       {
+               std::pair<int, pts_t> seek = m_cue->m_seek_requests.front();
+               m_cue->m_lock.Unlock();
+               m_cue->m_lock.WrLock();
+               m_cue->m_seek_requests.pop_front();
+               m_cue->m_lock.Unlock();
+               m_cue->m_lock.RdLock();
+               int relative = seek.first;
+               pts_t pts = seek.second;
+
+               pts_t now = 0;
+               if (relative)
+               {
+                       if (!m_cue->m_decoder)
+                       {
+                               eDebug("no decoder - can't seek relative");
+                               continue;
+                       }
+                       if (m_cue->m_decoder->getPTS(0, now))
+                       {
+                               eDebug("decoder getPTS failed, can't seek relative");
+                               continue;
+                       }
+                       if (getCurrentPosition(m_cue->m_decoding_demux, now, 1))
+                       {
+                               eDebug("seekTo: getCurrentPosition failed!");
+                               continue;
+                       }
+               } else if (pts < 0) /* seek relative to end */
+               {
+                       pts_t len;
+                       if (!getLength(len))
+                       {
+                               eDebug("seeking relative to end. len=%lld, seek = %lld", len, pts);
+                               pts += len;
+                       } else
+                       {
+                               eWarning("getLength failed - can't seek relative to end!");
+                               continue;
+                       }
+               }
+
+               if (relative == 1) /* pts relative */
+               {
+                       pts += now;
+                       if (pts < 0)
+                               pts = 0;
+               }
+
+               if (relative != 2)
+                       if (pts < 0)
+                               pts = 0;
+
+               if (relative == 2) /* AP relative */
+               {
+                       eDebug("AP relative seeking: %lld, at %lld", pts, now);
+                       pts_t nextap;
+                       if (m_tstools.getNextAccessPoint(nextap, now, pts))
+                       {
+                               pts = now - 90000; /* approx. 1s */
+                               eDebug("AP relative seeking failed!");
+                       } else
+                       {
+                               eDebug("next ap is %llx\n", pts);
+                               pts = nextap;
+                       }
+               }
+
+               off_t offset = 0;
+               if (m_tstools.getOffset(offset, pts))
+               {
+                       eDebug("get offset for pts=%lld failed!", pts);
+                       continue;
+               }
+
+               eDebug("ok, resolved skip (rel: %d, diff %lld), now at %08llx", relative, pts, offset);
+               current_offset = align(offset, blocksize); /* in case tstools return non-aligned offset */
+       }
+
+       m_cue->m_lock.Unlock();
+
+       for (std::list<std::pair<off_t, off_t> >::const_iterator i(m_source_span.begin()); i != m_source_span.end(); ++i)
+       {
+               long long aligned_start = align(i->first, blocksize);
+               long long aligned_end = align(i->second, blocksize);
+
+               if ((current_offset >= aligned_start) && (current_offset < aligned_end))
+               {
+                       start = current_offset;
+                               /* max can not exceed max(size_t). aligned_end - current_offset, however, can. */
+                       if ((aligned_end - current_offset) > max)
+                               size = max;
+                       else
+                               size = aligned_end - current_offset;
+                       eDebug("HIT, %lld < %lld < %lld, size: %d", i->first, current_offset, i->second, size);
+                       return;
+               }
+               if (current_offset < aligned_start)
+               {
+                               /* ok, our current offset is in an 'out' zone. */
+                       if ((m_skipmode_m >= 0) || (i == m_source_span.begin()))
+                       {
+                                       /* in normal playback, just start at the next zone. */
+                               start = i->first;
+
+                                       /* size is not 64bit! */
+                               if ((i->second - i->first) > max)
+                                       size = max;
+                               else
+                                       size = aligned_end - aligned_start;
+
+                               eDebug("skip");
+                               if (m_skipmode_m < 0)
+                               {
+                                       eDebug("reached SOF");
+                                               /* reached SOF */
+                                       m_skipmode_m = 0;
+                                       m_pvr_thread->sendEvent(eFilePushThread::evtUser);
+                               }
+                       } else
+                       {
+                                       /* when skipping reverse, however, choose the zone before. */
+                               --i;
+                               eDebug("skip to previous block, which is %llx..%llx", i->first, i->second);
+                               size_t len;
+
+                               aligned_start = align(i->first, blocksize);
+                               aligned_end = align(i->second, blocksize);
+
+                               if ((aligned_end - aligned_start) > max)
+                                       len = max;
+                               else
+                                       len = aligned_end - aligned_start;
+
+                               start = aligned_end - len;
+                               eDebug("skipping to %llx, %d", start, len);
+                       }
+
+                       eDebug("result: %llx, %x (%llx %llx)", start, size, aligned_start, aligned_end);
+                       return;
+               }
+       }
+
+       if ((current_offset < -m_skipmode_m) && (m_skipmode_m < 0))
+       {
+               eDebug("reached SOF");
+               m_skipmode_m = 0;
+               m_pvr_thread->sendEvent(eFilePushThread::evtUser);
+       }
+
+       start = current_offset;
+       size = max;
+
+       eDebug("END OF CUESHEET. (%08llx, %d)", start, size);
+       return;
+}
+
 void eDVBChannel::AddUse()
 {
-       ++m_use_count;
+       if (++m_use_count > 1 && m_state == state_last_instance)
+       {
+               m_state = state_ok;
+               m_stateChanged(this);
+       }
 }
 
 void eDVBChannel::ReleaseUse()
@@ -573,13 +1437,18 @@ void eDVBChannel::ReleaseUse()
                m_state = state_release;
                m_stateChanged(this);
        }
+       else if (m_use_count == 1)
+       {
+               m_state = state_last_instance;
+               m_stateChanged(this);
+       }
 }
 
 RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontendParameters> &feparm)
 {
        if (m_channel_id)
                m_mgr->removeChannel(this);
-               
+
        if (!channelid)
                return 0;
 
@@ -588,21 +1457,22 @@ RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontend
                eDebug("no frontend to tune!");
                return -ENODEV;
        }
-       
+
        m_channel_id = channelid;
        m_mgr->addChannel(channelid, this);
        m_state = state_tuning;
                        /* if tuning fails, shutdown the channel immediately. */
        int res;
        res = m_frontend->get().tune(*feparm);
-       
+       m_current_frontend_parameters = feparm;
+
        if (res)
        {
                m_state = state_release;
                m_stateChanged(this);
                return res;
        }
-       
+
        return 0;
 }
 
@@ -612,6 +1482,12 @@ RESULT eDVBChannel::connectStateChange(const Slot1<void,iDVBChannel*> &stateChan
        return 0;
 }
 
+RESULT eDVBChannel::connectEvent(const Slot2<void,iDVBChannel*,int> &event, ePtr<eConnection> &connection)
+{
+       connection = new eConnection((iDVBChannel*)this, m_event.connect(event));
+       return 0;
+}
+
 RESULT eDVBChannel::getState(int &state)
 {
        state = m_state;
@@ -623,35 +1499,100 @@ RESULT eDVBChannel::setCIRouting(const eDVBCIRouting &routing)
        return -1;
 }
 
+void eDVBChannel::SDTready(int result)
+{
+       ePyObject args = PyTuple_New(2), ret;
+       bool ok=false;
+       if (!result)
+       {
+               for (std::vector<ServiceDescriptionSection*>::const_iterator i = m_SDT->getSections().begin(); i != m_SDT->getSections().end(); ++i)
+               {
+                       ok = true;
+                       PyTuple_SET_ITEM(args, 0, PyInt_FromLong((*i)->getTransportStreamId()));
+                       PyTuple_SET_ITEM(args, 1, PyInt_FromLong((*i)->getOriginalNetworkId()));
+                       break;
+               }
+       }
+       if (!ok)
+       {
+               PyTuple_SET_ITEM(args, 0, Py_None);
+               PyTuple_SET_ITEM(args, 1, Py_None);
+               Py_INCREF(Py_None);
+               Py_INCREF(Py_None);
+       }
+       ret = PyObject_CallObject(m_tsid_onid_callback, args);
+       if (ret)
+               Py_DECREF(ret);
+       Py_DECREF(args);
+       Py_DECREF(m_tsid_onid_callback);
+       m_tsid_onid_callback = ePyObject();
+       m_tsid_onid_demux = 0;
+       m_SDT = 0;
+}
+
+RESULT eDVBChannel::requestTsidOnid(ePyObject callback)
+{
+       if (PyCallable_Check(callback))
+       {
+               if (!getDemux(m_tsid_onid_demux, 0))
+               {
+                       m_SDT = new eTable<ServiceDescriptionSection>;
+                       CONNECT(m_SDT->tableReady, eDVBChannel::SDTready);
+                       if (m_SDT->start(m_tsid_onid_demux, eDVBSDTSpec()))
+                       {
+                               m_tsid_onid_demux = 0;
+                               m_SDT = 0;
+                       }
+                       else
+                       {
+                               Py_INCREF(callback);
+                               m_tsid_onid_callback = callback;
+                               return 0;
+                       }
+               }
+       }
+       return -1;
+}
+
 RESULT eDVBChannel::getDemux(ePtr<iDVBDemux> &demux, int cap)
 {
-       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;
+               /* don't hold a reference to the decoding demux, we don't need it. */
+
+               /* FIXME: by dropping the 'allocated demux' in favour of the 'iDVBDemux',
+                  the refcount is lost. thus, decoding demuxes are never allocated.
+
+                  this poses a big problem for PiP. */
        if (cap & capDecode)
-       {
                our_demux = 0;
-       }
        return 0;
 }
 
 RESULT eDVBChannel::getFrontend(ePtr<iDVBFrontend> &frontend)
 {
+       frontend = 0;
+       if (!m_frontend)
+               return -ENODEV;
        frontend = &m_frontend->get();
        if (frontend)
                return 0;
-       else
-               return -ENODEV;
+       return -ENODEV;
+}
+
+RESULT eDVBChannel::getCurrentFrontendParameters(ePtr<iDVBFrontendParameters> &param)
+{
+       param = m_current_frontend_parameters;
+       return 0;
 }
 
 RESULT eDVBChannel::playFile(const char *file)
@@ -663,137 +1604,180 @@ RESULT eDVBChannel::playFile(const char *file)
                delete m_pvr_thread;
                m_pvr_thread = 0;
        }
-       
+
        m_tstools.openFile(file);
-       
+
                /* DON'T EVEN THINK ABOUT FIXING THIS. FIX THE ATI SOURCES FIRST,
                   THEN DO A REAL FIX HERE! */
-       
+
                /* (this codepath needs to be improved anyway.) */
+#if HAVE_DVB_API_VERSION < 3
+       m_pvr_fd_dst = open("/dev/pvr", O_WRONLY);
+#else
        m_pvr_fd_dst = open("/dev/misc/pvr", O_WRONLY);
+#endif
        if (m_pvr_fd_dst < 0)
        {
                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;
        }
-       
-       m_pvr_fd_src = open(file, O_RDONLY);
-       if (m_pvr_fd_src < 0)
+
+       m_pvr_thread = new eDVBChannelFilePush();
+       m_pvr_thread->enablePVRCommit(1);
+       m_pvr_thread->setStreamMode(1);
+       m_pvr_thread->setScatterGather(this);
+
+       if (m_pvr_thread->start(file, m_pvr_fd_dst))
        {
-               eDebug("can't open PVR m_pvr_fd_src file %s (%m)", file);
-               close(m_pvr_fd_dst);
+               delete m_pvr_thread;
+               m_pvr_thread = 0;
+               eDebug("can't open PVR file %s (%m)", file);
                return -ENOENT;
        }
-       
+       CONNECT(m_pvr_thread->m_event, eDVBChannel::pvrEvent);
+
        m_state = state_ok;
        m_stateChanged(this);
-       
-       m_pvr_thread = new eFilePushThread();
-       m_pvr_thread->start(m_pvr_fd_src, m_pvr_fd_dst);
 
        return 0;
 }
 
+void eDVBChannel::stopFile()
+{
+       if (m_pvr_thread)
+       {
+               m_pvr_thread->stop();
+               ::close(m_pvr_fd_dst);
+               delete m_pvr_thread;
+               m_pvr_thread = 0;
+       }
+}
+
+void eDVBChannel::setCueSheet(eCueSheet *cuesheet)
+{
+       m_conn_cueSheetEvent = 0;
+       m_cue = cuesheet;
+       if (m_cue)
+               m_cue->connectEvent(slot(*this, &eDVBChannel::cueSheetEvent), m_conn_cueSheetEvent);
+}
+
 RESULT eDVBChannel::getLength(pts_t &len)
 {
        return m_tstools.calcLen(len);
 }
 
-RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos)
+RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, int mode)
 {
        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;
-       }
-       
+
        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;
-}
+       int r;
 
-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)
+       if (mode == 0) /* demux */
        {
-               pts_t now;
-               if (getCurrentPosition(decoding_demux, now))
+               r = decoding_demux->getSTC(now, 0);
+               if (r)
                {
-                       eDebug("seekTo: getCurrentPosition failed!");
+                       eDebug("demux getSTC failed");
                        return -1;
                }
-               pts += now;
+       } else
+               now = pos; /* fixup supplied */
+
+       off_t off = 0; /* TODO: fixme */
+       r = m_tstools.fixupPTS(off, now);
+       if (r)
+       {
+               eDebug("fixup PTS failed");
+               return -1;
        }
-       
-       if (pts < 0)
-               pts = 0;
-       
-       off_t offset = (pts * (pts_t)bitrate) / 8ULL / 90000ULL;
-       
-       seekToPosition(decoding_demux, offset);
+
+       pos = now;
+
        return 0;
 }
 
-RESULT eDVBChannel::seekToPosition(iDVBDemux *decoding_demux, const off_t &r)
+void eDVBChannel::flushPVR(iDVBDemux *decoding_demux)
 {
                        /* 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();
 
+       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);
+               /* resume will re-query the SG */
        m_pvr_thread->resume();
+}
+
+DEFINE_REF(eCueSheet);
+
+eCueSheet::eCueSheet()
+{
+       m_skipmode_ratio = 0;
+}
+
+void eCueSheet::seekTo(int relative, const pts_t &pts)
+{
+       m_lock.WrLock();
+       m_seek_requests.push_back(std::pair<int, pts_t>(relative, pts));
+       m_lock.Unlock();
+       m_event(evtSeek);
+}
+
+void eCueSheet::clear()
+{
+       m_lock.WrLock();
+       m_spans.clear();
+       m_lock.Unlock();
+}
+
+void eCueSheet::addSourceSpan(const pts_t &begin, const pts_t &end)
+{
+       assert(begin < end);
+       m_lock.WrLock();
+       m_spans.push_back(std::pair<pts_t, pts_t>(begin, end));
+       m_lock.Unlock();
+}
+
+void eCueSheet::commitSpans()
+{
+       m_event(evtSpanChanged);
+}
+
+void eCueSheet::setSkipmode(const pts_t &ratio)
+{
+       m_lock.WrLock();
+       m_skipmode_ratio = ratio;
+       m_lock.Unlock();
+       m_event(evtSkipmode);
+}
+
+void eCueSheet::setDecodingDemux(iDVBDemux *demux, iTSMPEGDecoder *decoder)
+{
+       m_decoding_demux = demux;
+       m_decoder = decoder;
+}
+
+RESULT eCueSheet::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &connection)
+{
+       connection = new eConnection(this, m_event.connect(event));
        return 0;
 }