lib/dvb/dvb.h

   1 #ifndef __dvb_dvb_h
   2 #define __dvb_dvb_h
   3
   4 #include <lib/dvb/idvb.h>
   5 #include <lib/dvb/demux.h>
   6 #include <lib/dvb/frontend.h>
   7 #include <lib/dvb/tstools.h>
   8 #include <connection.h>
   9
  10 class eDVBChannel;
  11
  12         /* we do NOT handle resource conflicts here. instead, the allocateChannel
  13            fails, and the application has to see why the channel is allocated
  14            (and how to deallocate it). */
  15 class iDVBAdapter;
  16
  17 class eDVBRegisteredFrontend: public iObject
  18 {
  19 DECLARE_REF(eDVBRegisteredFrontend);
  20 public:
  21         iDVBAdapter *m_adapter;
  22         ePtr<eDVBFrontend> m_frontend;
  23         int m_inuse;
  24         eDVBRegisteredFrontend(eDVBFrontend *fe, iDVBAdapter *adap): m_adapter(adap), m_frontend(fe), m_inuse(0) { }
  25 };
  26
  27 struct eDVBRegisteredDemux
  28 {
  29 DECLARE_REF(eDVBRegisteredDemux);
  30 public:
  31         iDVBAdapter *m_adapter;
  32         ePtr<eDVBDemux> m_demux;
  33         int m_inuse;
  34         eDVBRegisteredDemux(eDVBDemux *demux, iDVBAdapter *adap): m_adapter(adap), m_demux(demux), m_inuse(0) { }
  35 };
  36
  37 class eDVBAllocatedFrontend
  38 {
  39 DECLARE_REF(eDVBAllocatedFrontend);
  40 public:
  41
  42         eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe);
  43         ~eDVBAllocatedFrontend();
  44         eDVBFrontend &get() { return *m_fe->m_frontend; }
  45         operator eDVBRegisteredFrontend*() { return m_fe; }
  46         operator eDVBFrontend*() { return m_fe->m_frontend; }
  47
  48 private:
  49         eDVBRegisteredFrontend *m_fe;
  50 };
  51
  52 class eDVBAllocatedDemux
  53 {
  54 DECLARE_REF(eDVBAllocatedDemux);
  55 public:
  56
  57         eDVBAllocatedDemux(eDVBRegisteredDemux *demux);
  58         ~eDVBAllocatedDemux();
  59         eDVBDemux &get() { return *m_demux->m_demux; }
  60         operator eDVBRegisteredDemux*() { return m_demux; }
  61         operator eDVBDemux*() { return m_demux->m_demux; }
  62
  63 private:
  64         eDVBRegisteredDemux *m_demux;
  65 };
  66
  67 class iDVBAdapter: public iObject
  68 {
  69 public:
  70         virtual int getNumDemux() = 0;
  71         virtual RESULT getDemux(ePtr<eDVBDemux> &demux, int nr) = 0;
  72
  73         virtual int getNumFrontends() = 0;
  74         virtual RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr) = 0;
  75 };
  76
  77 class eDVBAdapterLinux: public iDVBAdapter
  78 {
  79 DECLARE_REF(eDVBAdapterLinux);
  80 public:
  81         eDVBAdapterLinux(int nr);
  82
  83         int getNumDemux();
  84         RESULT getDemux(ePtr<eDVBDemux> &demux, int nr);
  85
  86         int getNumFrontends();
  87         RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr);
  88
  89         static int exist(int nr);
  90 private:
  91         int m_nr;
  92         eSmartPtrList<eDVBFrontend> m_frontend;
  93         eSmartPtrList<eDVBDemux>    m_demux;
  94 };
  95
  96 class eDVBResourceManager: public iObject
  97 {
  98         DECLARE_REF(eDVBResourceManager);
  99         int avail, busy;
 100
 101         eUsePtr<iDVBChannel> m_cached_channel;
 102
 103         eSmartPtrList<iDVBAdapter> m_adapter;
 104
 105         eSmartPtrList<eDVBRegisteredDemux> m_demux;
 106         eSmartPtrList<eDVBRegisteredFrontend> m_frontend;
 107
 108         void addAdapter(iDVBAdapter *adapter);
 109
 110                         /* allocates a frontend able to tune to frontend paramters 'feperm'.
 111                            the frontend must be tuned lateron. there is no guarante
 112                            that tuning will succeed - it just means that if this frontend
 113                            can't tune, no other frontend could do it.
 114
 115                            there might be a priority given to certain frontend/chid
 116                            combinations. this will be evaluated here. */
 117
 118         RESULT allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm);
 119         RESULT allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int index);
 120
 121                         /* allocate a demux able to filter on the selected frontend. */
 122         RESULT allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap);
 123
 124         struct active_channel
 125         {
 126                 eDVBChannelID m_channel_id;
 127                         /* we don't hold a reference here. */
 128                 eDVBChannel *m_channel;
 129
 130                 active_channel(const eDVBChannelID &chid, eDVBChannel *ch) : m_channel_id(chid), m_channel(ch) { }
 131         };
 132
 133         std::list<active_channel> m_active_channels;
 134
 135         ePtr<iDVBChannelList> m_list;
 136         ePtr<iDVBSatelliteEquipmentControl> m_sec;
 137         static eDVBResourceManager *instance;
 138
 139         friend class eDVBChannel;
 140         RESULT addChannel(const eDVBChannelID &chid, eDVBChannel *ch);
 141         RESULT removeChannel(eDVBChannel *ch);
 142
 143         Signal1<void,eDVBChannel*> m_channelAdded;
 144
 145         bool canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm);
 146 public:
 147         eDVBResourceManager();
 148         virtual ~eDVBResourceManager();
 149
 150         static RESULT getInstance(ePtr<eDVBResourceManager> &ptr) { if (instance) { ptr = instance; return 0; } return -1; }
 151
 152         RESULT setChannelList(iDVBChannelList *list);
 153         RESULT getChannelList(ePtr<iDVBChannelList> &list);
 154
 155         enum {
 156                 errNoFrontend = -1,
 157                 errNoDemux    = -2,
 158                 errChidNotFound = -3
 159         };
 160
 161                 /* allocate channel... */
 162         RESULT allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel);
 163         RESULT allocateRawChannel(eUsePtr<iDVBChannel> &channel, int frontend_index);
 164         RESULT allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel);
 165
 166         RESULT connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection);
 167
 168         bool canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID &ignore);
 169 };
 170
 171 class eFilePushThread;
 172
 173         /* iDVBPVRChannel includes iDVBChannel. don't panic. */
 174 class eDVBChannel: public iDVBPVRChannel, public Object
 175 {
 176         DECLARE_REF(eDVBChannel);
 177 public:
 178         eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend);
 179         virtual ~eDVBChannel();
 180
 181                 /* only for managed channels - effectively tunes to the channelid. should not be used... */
 182                 /* cannot be used for PVR channels. */
 183         RESULT setChannel(const eDVBChannelID &id, ePtr<iDVBFrontendParameters> &feparam);
 184         eDVBChannelID getChannelID() { return m_channel_id; }
 185
 186         RESULT connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection);
 187         RESULT getState(int &state);
 188
 189         RESULT setCIRouting(const eDVBCIRouting &routing);
 190         RESULT getDemux(ePtr<iDVBDemux> &demux, int cap);
 191         RESULT getFrontend(ePtr<iDVBFrontend> &frontend);
 192
 193                 /* iDVBPVRChannel */
 194         RESULT playFile(const char *file);
 195         RESULT getLength(pts_t &len);
 196         RESULT getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos);
 197         RESULT seekTo(iDVBDemux *decoding_demux, int relative, pts_t &pts);
 198                         /* seeking to relative positions won't work -
 199                            there is an unknown amount of buffers in between */
 200         RESULT seekToPosition(iDVBDemux *decoding_demux, const off_t &off);
 201
 202         int getUseCount() { return m_use_count; }
 203 private:
 204         ePtr<eDVBAllocatedFrontend> m_frontend;
 205         ePtr<eDVBAllocatedDemux> m_demux, m_decoder_demux;
 206
 207         ePtr<iDVBFrontendParameters> m_current_frontend_parameters;
 208         eDVBChannelID m_channel_id;
 209         Signal1<void,iDVBChannel*> m_stateChanged;
 210         int m_state;
 211
 212                         /* for channel list */
 213         ePtr<eDVBResourceManager> m_mgr;
 214
 215         void frontendStateChanged(iDVBFrontend*fe);
 216         ePtr<eConnection> m_conn_frontendStateChanged;
 217
 218                 /* for PVR playback */
 219         eFilePushThread *m_pvr_thread;
 220         int m_pvr_fd_src, m_pvr_fd_dst;
 221         eDVBTSTools m_tstools;
 222
 223         friend class eUsePtr<eDVBChannel>;
 224                 /* use count */
 225         oRefCount m_use_count;
 226         void AddUse();
 227         void ReleaseUse();
 228 };
 229
 230 #endif