lib/dvb/dvb.h

   1 #ifndef __dvb_dvb_h
   2 #define __dvb_dvb_h
   3
   4 #include <lib/base/ebase.h>
   5 #include <lib/dvb/idvb.h>
   6 #include <lib/dvb/demux.h>
   7 #include <lib/dvb/frontend.h>
   8 #include <lib/dvb/tstools.h>
   9 #include <connection.h>
  10
  11 class eDVBChannel;
  12
  13         /* we do NOT handle resource conflicts here. instead, the allocateChannel
  14            fails, and the application has to see why the channel is allocated
  15            (and how to deallocate it). */
  16 class iDVBAdapter;
  17
  18 class eDVBRegisteredFrontend: public iObject, public Object
  19 {
  20         DECLARE_REF(eDVBRegisteredFrontend);
  21         eTimer *disable;
  22         void closeFrontend()
  23         {
  24                 if (!m_inuse && m_frontend->closeFrontend()) // frontend busy
  25                         disable->start(60000, true);  // retry close in 60secs
  26         }
  27 public:
  28         eDVBRegisteredFrontend(eDVBFrontend *fe, iDVBAdapter *adap)
  29                 :disable(new eTimer(eApp)), m_adapter(adap), m_frontend(fe), m_inuse(0)
  30         {
  31                 disable = new eTimer(eApp);
  32                 CONNECT(disable->timeout, eDVBRegisteredFrontend::closeFrontend);
  33         }
  34         void dec_use()
  35         {
  36                 if (!--m_inuse)
  37                         disable->start(3000, true);
  38         }
  39         void inc_use()
  40         {
  41                 if (++m_inuse == 1)
  42                         m_frontend->openFrontend();
  43         }
  44         iDVBAdapter *m_adapter;
  45         ePtr<eDVBFrontend> m_frontend;
  46         int m_inuse;
  47 };
  48
  49 struct eDVBRegisteredDemux
  50 {
  51 DECLARE_REF(eDVBRegisteredDemux);
  52 public:
  53         iDVBAdapter *m_adapter;
  54         ePtr<eDVBDemux> m_demux;
  55         int m_inuse;
  56         eDVBRegisteredDemux(eDVBDemux *demux, iDVBAdapter *adap): m_adapter(adap), m_demux(demux), m_inuse(0) { }
  57 };
  58
  59 class eDVBAllocatedFrontend
  60 {
  61 DECLARE_REF(eDVBAllocatedFrontend);
  62 public:
  63
  64         eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe);
  65         ~eDVBAllocatedFrontend();
  66         eDVBFrontend &get() { return *m_fe->m_frontend; }
  67         operator eDVBRegisteredFrontend*() { return m_fe; }
  68         operator eDVBFrontend*() { return m_fe->m_frontend; }
  69
  70 private:
  71         eDVBRegisteredFrontend *m_fe;
  72 };
  73
  74 class eDVBAllocatedDemux
  75 {
  76 DECLARE_REF(eDVBAllocatedDemux);
  77 public:
  78
  79         eDVBAllocatedDemux(eDVBRegisteredDemux *demux);
  80         ~eDVBAllocatedDemux();
  81         eDVBDemux &get() { return *m_demux->m_demux; }
  82         operator eDVBRegisteredDemux*() { return m_demux; }
  83         operator eDVBDemux*() { return m_demux->m_demux; }
  84
  85 private:
  86         eDVBRegisteredDemux *m_demux;
  87 };
  88
  89 class iDVBAdapter: public iObject
  90 {
  91 public:
  92         virtual int getNumDemux() = 0;
  93         virtual RESULT getDemux(ePtr<eDVBDemux> &demux, int nr) = 0;
  94
  95         virtual int getNumFrontends() = 0;
  96         virtual RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr) = 0;
  97 };
  98
  99 class eDVBAdapterLinux: public iDVBAdapter
 100 {
 101 DECLARE_REF(eDVBAdapterLinux);
 102 public:
 103         eDVBAdapterLinux(int nr);
 104
 105         int getNumDemux();
 106         RESULT getDemux(ePtr<eDVBDemux> &demux, int nr);
 107
 108         int getNumFrontends();
 109         RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr);
 110
 111         static int exist(int nr);
 112 private:
 113         int m_nr;
 114         eSmartPtrList<eDVBFrontend> m_frontend;
 115         eSmartPtrList<eDVBDemux>    m_demux;
 116 };
 117
 118 class eDVBResourceManager: public iObject
 119 {
 120         DECLARE_REF(eDVBResourceManager);
 121         int avail, busy;
 122
 123         eUsePtr<iDVBChannel> m_cached_channel;
 124
 125         eSmartPtrList<iDVBAdapter> m_adapter;
 126
 127         eSmartPtrList<eDVBRegisteredDemux> m_demux;
 128         eSmartPtrList<eDVBRegisteredFrontend> m_frontend;
 129
 130         void addAdapter(iDVBAdapter *adapter);
 131
 132                         /* allocates a frontend able to tune to frontend paramters 'feperm'.
 133                            the frontend must be tuned lateron. there is no guarante
 134                            that tuning will succeed - it just means that if this frontend
 135                            can't tune, no other frontend could do it.
 136
 137                            there might be a priority given to certain frontend/chid
 138                            combinations. this will be evaluated here. */
 139
 140         RESULT allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm);
 141         RESULT allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int index);
 142
 143                         /* allocate a demux able to filter on the selected frontend. */
 144         RESULT allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap);
 145
 146         struct active_channel
 147         {
 148                 eDVBChannelID m_channel_id;
 149                         /* we don't hold a reference here. */
 150                 eDVBChannel *m_channel;
 151
 152                 active_channel(const eDVBChannelID &chid, eDVBChannel *ch) : m_channel_id(chid), m_channel(ch) { }
 153         };
 154
 155         std::list<active_channel> m_active_channels;
 156
 157         ePtr<iDVBChannelList> m_list;
 158         ePtr<iDVBSatelliteEquipmentControl> m_sec;
 159         static eDVBResourceManager *instance;
 160
 161         friend class eDVBChannel;
 162         RESULT addChannel(const eDVBChannelID &chid, eDVBChannel *ch);
 163         RESULT removeChannel(eDVBChannel *ch);
 164
 165         Signal1<void,eDVBChannel*> m_channelAdded;
 166
 167         bool canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm);
 168 public:
 169         eDVBResourceManager();
 170         virtual ~eDVBResourceManager();
 171
 172         static RESULT getInstance(ePtr<eDVBResourceManager> &ptr) { if (instance) { ptr = instance; return 0; } return -1; }
 173
 174         RESULT setChannelList(iDVBChannelList *list);
 175         RESULT getChannelList(ePtr<iDVBChannelList> &list);
 176
 177         enum {
 178                 errNoFrontend = -1,
 179                 errNoDemux    = -2,
 180                 errChidNotFound = -3
 181         };
 182
 183                 /* allocate channel... */
 184         RESULT allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel);
 185         RESULT allocateRawChannel(eUsePtr<iDVBChannel> &channel, int frontend_index);
 186         RESULT allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel);
 187
 188         RESULT connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection);
 189
 190         bool canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID &ignore);
 191 };
 192
 193 class eFilePushThread;
 194
 195         /* iDVBPVRChannel includes iDVBChannel. don't panic. */
 196 class eDVBChannel: public iDVBPVRChannel, public Object
 197 {
 198         DECLARE_REF(eDVBChannel);
 199 public:
 200         eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend);
 201         virtual ~eDVBChannel();
 202
 203                 /* only for managed channels - effectively tunes to the channelid. should not be used... */
 204                 /* cannot be used for PVR channels. */
 205         RESULT setChannel(const eDVBChannelID &id, ePtr<iDVBFrontendParameters> &feparam);
 206         eDVBChannelID getChannelID() { return m_channel_id; }
 207
 208         RESULT connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection);
 209         RESULT getState(int &state);
 210
 211         RESULT setCIRouting(const eDVBCIRouting &routing);
 212         RESULT getDemux(ePtr<iDVBDemux> &demux, int cap);
 213         RESULT getFrontend(ePtr<iDVBFrontend> &frontend);
 214
 215                 /* iDVBPVRChannel */
 216         RESULT playFile(const char *file);
 217         RESULT getLength(pts_t &len);
 218         RESULT getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos);
 219         RESULT seekTo(iDVBDemux *decoding_demux, int relative, pts_t &pts);
 220                         /* seeking to relative positions won't work -
 221                            there is an unknown amount of buffers in between */
 222         RESULT seekToPosition(iDVBDemux *decoding_demux, const off_t &off);
 223
 224         int getUseCount() { return m_use_count; }
 225 private:
 226         ePtr<eDVBAllocatedFrontend> m_frontend;
 227         ePtr<eDVBAllocatedDemux> m_demux, m_decoder_demux;
 228
 229         ePtr<iDVBFrontendParameters> m_current_frontend_parameters;
 230         eDVBChannelID m_channel_id;
 231         Signal1<void,iDVBChannel*> m_stateChanged;
 232         int m_state;
 233
 234                         /* for channel list */
 235         ePtr<eDVBResourceManager> m_mgr;
 236
 237         void frontendStateChanged(iDVBFrontend*fe);
 238         ePtr<eConnection> m_conn_frontendStateChanged;
 239
 240                 /* for PVR playback */
 241         eFilePushThread *m_pvr_thread;
 242         int m_pvr_fd_src, m_pvr_fd_dst;
 243         eDVBTSTools m_tstools;
 244
 245         friend class eUsePtr<eDVBChannel>;
 246                 /* use count */
 247         oRefCount m_use_count;
 248         void AddUse();
 249         void ReleaseUse();
 250 };
 251
 252 #endif