remove unneeded signals ( eDVBChannel::m_stateChanged give us the same informations )
[enigma2.git] / lib / dvb / dvb.h
index 52dd9a0..d0deb2f 100644 (file)
 #include <connection.h>
 
 class eDVBChannel;
+class eDVBChannel;
+
+       /* we do NOT handle resource conflicts here. instead, the allocateChannel
+          fails, and the application has to see why the channel is allocated
+          (and how to deallocate it). */
+class iDVBAdapter;
+
+class eDVBRegisteredFrontend: public iObject
+{
+DECLARE_REF(eDVBRegisteredFrontend);
+public:
+       iDVBAdapter *m_adapter;
+       ePtr<eDVBFrontend> m_frontend;
+       int m_inuse;
+       eDVBRegisteredFrontend(eDVBFrontend *fe, iDVBAdapter *adap): m_adapter(adap), m_frontend(fe), m_inuse(0) { }
+};
+
+struct eDVBRegisteredDemux
+{
+DECLARE_REF(eDVBRegisteredDemux);
+public:
+       iDVBAdapter *m_adapter;
+       ePtr<eDVBDemux> m_demux;
+       int m_inuse;
+       eDVBRegisteredDemux(eDVBDemux *demux, iDVBAdapter *adap): m_adapter(adap), m_demux(demux), m_inuse(0) { }
+};
+
+class eDVBAllocatedFrontend
+{
+DECLARE_REF(eDVBAllocatedFrontend);
+public:
+       
+       eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe);
+       ~eDVBAllocatedFrontend();
+       eDVBFrontend &get() { return *m_fe->m_frontend; }
+       operator eDVBRegisteredFrontend*() { return m_fe; }
+       operator eDVBFrontend*() { return m_fe->m_frontend; }
+
+private:
+       eDVBRegisteredFrontend *m_fe;
+};
+
+class eDVBAllocatedDemux
+{
+DECLARE_REF(eDVBAllocatedDemux);
+public:
+       
+       eDVBAllocatedDemux(eDVBRegisteredDemux *demux);
+       ~eDVBAllocatedDemux();
+       eDVBDemux &get() { return *m_demux->m_demux; }
+       operator eDVBRegisteredDemux*() { return m_demux; }
+       operator eDVBDemux*() { return m_demux->m_demux; }
+       
+private:
+       eDVBRegisteredDemux *m_demux;
+};
+
+class iDVBAdapter: public iObject
+{
+public:
+       virtual int getNumDemux() = 0;
+       virtual RESULT getDemux(ePtr<eDVBDemux> &demux, int nr) = 0;
+       
+       virtual int getNumFrontends() = 0;
+       virtual RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr) = 0;
+};
 
-class eDVBResourceManager: public iDVBResourceManager
+class eDVBAdapterLinux: public iDVBAdapter
 {
-       DECLARE_REF;
+DECLARE_REF(eDVBAdapterLinux);
+public:
+       eDVBAdapterLinux(int nr);
+
+       int getNumDemux();
+       RESULT getDemux(ePtr<eDVBDemux> &demux, int nr);
+       
+       int getNumFrontends();
+       RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr);
+       
+       static int exist(int nr);
+private:
+       int m_nr;
+       eSmartPtrList<eDVBFrontend> m_frontend;
+       eSmartPtrList<eDVBDemux>    m_demux;
+};
+
+class eDVBResourceManager: public iObject
+{
+       DECLARE_REF(eDVBResourceManager);
        int avail, busy;
-       struct adapter
+       
+       eSmartPtrList<iDVBAdapter> m_adapter;
+       
+       eSmartPtrList<eDVBRegisteredDemux> m_demux;
+       eSmartPtrList<eDVBRegisteredFrontend> m_frontend;
+       
+       void addAdapter(iDVBAdapter *adapter);
+       
+                       /* allocates a frontend able to tune to channelID "chid".
+                          the frontend must be tuned lateron. there is no guarante
+                          that tuning will suceed - it just means that if this frontend
+                          can't tune, no other frontend could do it.
+                          
+                          there might be a priority given to certain frontend/chid 
+                          combinations. this will be evaluated here. */
+                          
+       RESULT allocateFrontend(const eDVBChannelID &chid, ePtr<eDVBAllocatedFrontend> &fe);
+       
+                       /* allocate a demux able to filter on the selected frontend. */
+       RESULT allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux);
+       
+       struct active_channel
        {
-               eSmartPtrList<eDVBFrontend> fe;
-               eSmartPtrList<eDVBDemux> demux;
+               eDVBChannelID m_channel_id;
+                       /* we don't hold a reference here. */
+               eDVBChannel *m_channel;
+               
+               active_channel(const eDVBChannelID &chid, eDVBChannel *ch) : m_channel_id(chid), m_channel(ch) { }
        };
-       std::multimap<eDVBChannelID,eDVBChannel*> m_active_channels;
+       
+       std::list<active_channel> m_active_channels;
+       
        ePtr<iDVBChannelList> m_list;
        ePtr<iDVBSatelliteEquipmentControl> m_sec;
        static eDVBResourceManager *instance;
+       
+       friend class eDVBChannel;
+       RESULT addChannel(const eDVBChannelID &chid, eDVBChannel *ch);
+       RESULT removeChannel(eDVBChannel *ch);
+       
+       Signal1<void,eDVBChannel*> m_channelAdded;
+       Signal1<void,eDVBChannel*> m_channelRemoved;
+       Signal1<void,iDVBChannel*> m_channelRunning;
 public:
        eDVBResourceManager();
        virtual ~eDVBResourceManager();
@@ -30,34 +149,53 @@ public:
        RESULT setChannelList(iDVBChannelList *list);
        RESULT getChannelList(ePtr<iDVBChannelList> &list);
        
-       RESULT allocateChannel(const eDVBChannelID &channelid, ePtr<iDVBChannel> &channel);
-       RESULT allocateRawChannel(ePtr<iDVBChannel> &channel);
-       RESULT allocatePVRChannel(int caps);
+       enum {
+               errNoFrontend = -1,
+               errNoDemux    = -2,
+               errChidNotFound = -3
+       };
        
-       RESULT addChannel(const eDVBChannelID &chid, eDVBChannel *ch);
-       RESULT removeChannel(const eDVBChannelID &chid, eDVBChannel *ch);
+               /* allocate channel... */
+       RESULT allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel);
+       RESULT allocateRawChannel(eUsePtr<iDVBChannel> &channel);
+       RESULT allocatePVRChannel(int caps);
+
+       RESULT connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection);
+       RESULT connectChannelRemoved(const Slot1<void,eDVBChannel*> &channelRemoved, ePtr<eConnection> &connection);
+       RESULT connectChannelRunning(const Slot1<void,iDVBChannel*> &channelRemoved, ePtr<eConnection> &connection);
 };
 
-class eDVBChannel: public iDVBChannel, public eDVBDemux, public Object
+class eDVBChannel: public iDVBChannel, public Object
 {
-       DECLARE_REF;
+       DECLARE_REF(eDVBChannel);
 private:
-       ePtr<eDVBFrontend> m_frontend;
+       ePtr<eDVBAllocatedFrontend> m_frontend;
+       ePtr<eDVBAllocatedDemux> m_demux;
+       
        ePtr<iDVBFrontendParameters> m_current_frontend_parameters;
        eDVBChannelID m_channel_id;
        Signal1<void,iDVBChannel*> m_stateChanged;
        int m_state;
+
+                       /* for channel list */
        ePtr<eDVBResourceManager> m_mgr;
        
        void frontendStateChanged(iDVBFrontend*fe);
        ePtr<eConnection> m_conn_frontendStateChanged;
+
+       friend class eUsePtr<eDVBChannel>;
+               /* use count */
+       oRefCount m_use_count;
+       void AddUse();
+       void ReleaseUse();
 public:
-       eDVBChannel(eDVBResourceManager *mgr, int adapter, int frontend, int demux);
+       eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend, eDVBAllocatedDemux *demux);
        virtual ~eDVBChannel();
 
-               /* only for managed channels */
+               /* only for managed channels - effectively tunes to the channelid. should not be used... */
        RESULT setChannel(const eDVBChannelID &id);
-       
+       eDVBChannelID getChannelID() { return m_channel_id; }
+
        RESULT connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection);
        RESULT getState(int &state);