lib/dvb/dvb.h

   1 #ifndef __dvb_dvb_h
   2 #define __dvb_dvb_h
   3
   4 #ifndef SWIG
   5
   6 #include <lib/base/ebase.h>
   7 #include <lib/base/filepush.h>
   8 #include <lib/base/elock.h>
   9 #include <lib/dvb/idvb.h>
  10 #include <lib/dvb/demux.h>
  11 #include <lib/dvb/frontend.h>
  12 #include <lib/dvb/tstools.h>
  13 #include <connection.h>
  14
  15 class eDVBChannel;
  16
  17         /* we do NOT handle resource conflicts here. instead, the allocateChannel
  18            fails, and the application has to see why the channel is allocated
  19            (and how to deallocate it). */
  20 class iDVBAdapter;
  21
  22 class eDVBRegisteredFrontend: public iObject, public Object
  23 {
  24         DECLARE_REF(eDVBRegisteredFrontend);
  25         eTimer *disable;
  26         void closeFrontend()
  27         {
  28                 if (!m_inuse && m_frontend->closeFrontend()) // frontend busy
  29                         disable->start(60000, true);  // retry close in 60secs
  30         }
  31 public:
  32         eDVBRegisteredFrontend(eDVBFrontend *fe, iDVBAdapter *adap)
  33                 :disable(new eTimer(eApp)), m_adapter(adap), m_frontend(fe), m_inuse(0)
  34         {
  35                 disable = new eTimer(eApp);
  36                 CONNECT(disable->timeout, eDVBRegisteredFrontend::closeFrontend);
  37         }
  38         void dec_use()
  39         {
  40                 if (!--m_inuse)
  41                         disable->start(3000, true);
  42         }
  43         void inc_use()
  44         {
  45                 if (++m_inuse == 1)
  46                         m_frontend->openFrontend();
  47         }
  48         iDVBAdapter *m_adapter;
  49         ePtr<eDVBFrontend> m_frontend;
  50         int m_inuse;
  51 };
  52
  53 struct eDVBRegisteredDemux
  54 {
  55 DECLARE_REF(eDVBRegisteredDemux);
  56 public:
  57         iDVBAdapter *m_adapter;
  58         ePtr<eDVBDemux> m_demux;
  59         int m_inuse;
  60         eDVBRegisteredDemux(eDVBDemux *demux, iDVBAdapter *adap): m_adapter(adap), m_demux(demux), m_inuse(0) { }
  61 };
  62
  63 class eDVBAllocatedFrontend
  64 {
  65 DECLARE_REF(eDVBAllocatedFrontend);
  66 public:
  67
  68         eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe);
  69         ~eDVBAllocatedFrontend();
  70         eDVBFrontend &get() { return *m_fe->m_frontend; }
  71         operator eDVBRegisteredFrontend*() { return m_fe; }
  72         operator eDVBFrontend*() { return m_fe->m_frontend; }
  73
  74 private:
  75         eDVBRegisteredFrontend *m_fe;
  76 };
  77
  78 class eDVBAllocatedDemux
  79 {
  80 DECLARE_REF(eDVBAllocatedDemux);
  81 public:
  82
  83         eDVBAllocatedDemux(eDVBRegisteredDemux *demux);
  84         ~eDVBAllocatedDemux();
  85         eDVBDemux &get() { return *m_demux->m_demux; }
  86         operator eDVBRegisteredDemux*() { return m_demux; }
  87         operator eDVBDemux*() { return m_demux->m_demux; }
  88
  89 private:
  90         eDVBRegisteredDemux *m_demux;
  91 };
  92
  93 class iDVBAdapter: public iObject
  94 {
  95 public:
  96         virtual int getNumDemux() = 0;
  97         virtual RESULT getDemux(ePtr<eDVBDemux> &demux, int nr) = 0;
  98
  99         virtual int getNumFrontends() = 0;
 100         virtual RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr) = 0;
 101 };
 102
 103 class eDVBAdapterLinux: public iDVBAdapter
 104 {
 105 DECLARE_REF(eDVBAdapterLinux);
 106 public:
 107         eDVBAdapterLinux(int nr);
 108
 109         int getNumDemux();
 110         RESULT getDemux(ePtr<eDVBDemux> &demux, int nr);
 111
 112         int getNumFrontends();
 113         RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr);
 114
 115         static int exist(int nr);
 116 private:
 117         int m_nr;
 118         eSmartPtrList<eDVBFrontend> m_frontend;
 119         eSmartPtrList<eDVBDemux>    m_demux;
 120 };
 121
 122 #endif // SWIG
 123
 124 class eDVBResourceManager: public iObject, public Object
 125 {
 126         DECLARE_REF(eDVBResourceManager);
 127         int avail, busy;
 128
 129         eSmartPtrList<iDVBAdapter> m_adapter;
 130
 131         eSmartPtrList<eDVBRegisteredDemux> m_demux;
 132         eSmartPtrList<eDVBRegisteredFrontend> m_frontend;
 133
 134         void addAdapter(iDVBAdapter *adapter);
 135
 136                         /* allocates a frontend able to tune to frontend paramters 'feperm'.
 137                            the frontend must be tuned lateron. there is no guarante
 138                            that tuning will succeed - it just means that if this frontend
 139                            can't tune, no other frontend could do it.
 140
 141                            there might be a priority given to certain frontend/chid
 142                            combinations. this will be evaluated here. */
 143
 144         RESULT allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm);
 145         RESULT allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int index);
 146
 147                         /* allocate a demux able to filter on the selected frontend. */
 148         RESULT allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap);
 149
 150         struct active_channel
 151         {
 152                 eDVBChannelID m_channel_id;
 153                         /* we don't hold a reference here. */
 154                 eDVBChannel *m_channel;
 155
 156                 active_channel(const eDVBChannelID &chid, eDVBChannel *ch) : m_channel_id(chid), m_channel(ch) { }
 157         };
 158
 159         std::list<active_channel> m_active_channels;
 160
 161         ePtr<iDVBChannelList> m_list;
 162         ePtr<iDVBSatelliteEquipmentControl> m_sec;
 163         static eDVBResourceManager *instance;
 164
 165         friend class eDVBChannel;
 166         RESULT addChannel(const eDVBChannelID &chid, eDVBChannel *ch);
 167         RESULT removeChannel(eDVBChannel *ch);
 168
 169         Signal1<void,eDVBChannel*> m_channelAdded;
 170
 171         bool canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm);
 172
 173         eUsePtr<iDVBChannel> m_cached_channel;
 174         Connection m_cached_channel_state_changed_conn;
 175         eTimer m_releaseCachedChannelTimer;
 176         void DVBChannelStateChanged(iDVBChannel*);
 177         void releaseCachedChannel();
 178 #ifndef SWIG
 179 public:
 180 #endif
 181         eDVBResourceManager();
 182         virtual ~eDVBResourceManager();
 183
 184         RESULT setChannelList(iDVBChannelList *list);
 185         RESULT getChannelList(ePtr<iDVBChannelList> &list);
 186
 187         enum {
 188                 errNoFrontend = -1,
 189                 errNoDemux    = -2,
 190                 errChidNotFound = -3
 191         };
 192
 193         RESULT connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection);
 194         bool canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID &ignore);
 195
 196                 /* allocate channel... */
 197         RESULT allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel);
 198         RESULT allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel);
 199 #ifdef SWIG
 200 public:
 201 #endif
 202         RESULT allocateRawChannel(eUsePtr<iDVBChannel> &, int frontend_index);
 203         static RESULT getInstance(ePtr<eDVBResourceManager> &);
 204 };
 205 TEMPLATE_TYPEDEF(ePtr<eDVBResourceManager>, eDVBResourceManagerPtr);
 206 #ifndef SWIG
 207
 208         /* iDVBPVRChannel includes iDVBChannel. don't panic. */
 209 class eDVBChannel: public iDVBPVRChannel, public iFilePushScatterGather, public Object
 210 {
 211         DECLARE_REF(eDVBChannel);
 212         friend class eDVBResourceManager;
 213 public:
 214         eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend);
 215         virtual ~eDVBChannel();
 216
 217                 /* only for managed channels - effectively tunes to the channelid. should not be used... */
 218                 /* cannot be used for PVR channels. */
 219         RESULT setChannel(const eDVBChannelID &id, ePtr<iDVBFrontendParameters> &feparam);
 220         eDVBChannelID getChannelID() { return m_channel_id; }
 221
 222         RESULT connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection);
 223         RESULT connectEvent(const Slot2<void,iDVBChannel*,int> &eventChange, ePtr<eConnection> &connection);
 224
 225         RESULT getState(int &state);
 226
 227         RESULT setCIRouting(const eDVBCIRouting &routing);
 228         RESULT getDemux(ePtr<iDVBDemux> &demux, int cap);
 229         RESULT getFrontend(ePtr<iDVBFrontend> &frontend);
 230         RESULT getCurrentFrontendParameters(ePtr<iDVBFrontendParameters> &param);
 231
 232                 /* iDVBPVRChannel */
 233         RESULT playFile(const char *file);
 234         void stopFile();
 235
 236         void setCueSheet(eCueSheet *cuesheet);
 237
 238         RESULT getLength(pts_t &len);
 239         RESULT getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, int mode);
 240
 241         int getUseCount() { return m_use_count; }
 242 private:
 243         ePtr<eDVBAllocatedFrontend> m_frontend;
 244         ePtr<eDVBAllocatedDemux> m_demux, m_decoder_demux;
 245
 246         ePtr<iDVBFrontendParameters> m_current_frontend_parameters;
 247         eDVBChannelID m_channel_id;
 248         Signal1<void,iDVBChannel*> m_stateChanged;
 249         Signal2<void,iDVBChannel*,int> m_event;
 250         int m_state;
 251
 252                         /* for channel list */
 253         ePtr<eDVBResourceManager> m_mgr;
 254
 255         void frontendStateChanged(iDVBFrontend*fe);
 256         ePtr<eConnection> m_conn_frontendStateChanged;
 257
 258                 /* for PVR playback */
 259         eFilePushThread *m_pvr_thread;
 260         void pvrEvent(int event);
 261
 262         int m_pvr_fd_dst;
 263         eDVBTSTools m_tstools;
 264
 265         ePtr<eCueSheet> m_cue;
 266
 267         void cueSheetEvent(int event);
 268         ePtr<eConnection> m_conn_cueSheetEvent;
 269         int m_skipmode_m, m_skipmode_n;
 270
 271         std::list<std::pair<off_t, off_t> > m_source_span;
 272         void getNextSourceSpan(off_t current_offset, size_t bytes_read, off_t &start, size_t &size);
 273         void flushPVR(iDVBDemux *decoding_demux=0);
 274
 275         eSingleLock m_cuesheet_lock;
 276
 277         friend class eUsePtr<eDVBChannel>;
 278                 /* use count */
 279         oRefCount m_use_count;
 280         void AddUse();
 281         void ReleaseUse();
 282 };
 283
 284 #endif // SWIG
 285 #endif