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         Signal0<void> stateChanged;
  27         void closeFrontend()
  28         {
  29                 if (!m_inuse && m_frontend->closeFrontend()) // frontend busy
  30                         disable->start(60000, true);  // retry close in 60secs
  31         }
  32 public:
  33         eDVBRegisteredFrontend(eDVBFrontend *fe, iDVBAdapter *adap)
  34                 :disable(new eTimer(eApp)), m_adapter(adap), m_frontend(fe), m_inuse(0)
  35         {
  36                 disable = new eTimer(eApp);
  37                 CONNECT(disable->timeout, eDVBRegisteredFrontend::closeFrontend);
  38         }
  39         void dec_use()
  40         {
  41                 if (!--m_inuse)
  42                 {
  43                         /* emit */ stateChanged();
  44                         disable->start(3000, true);
  45                 }
  46         }
  47         void inc_use()
  48         {
  49                 if (++m_inuse == 1)
  50                 {
  51                         m_frontend->openFrontend();
  52                         /* emit */ stateChanged();
  53                 }
  54         }
  55         iDVBAdapter *m_adapter;
  56         ePtr<eDVBFrontend> m_frontend;
  57         int m_inuse;
  58 };
  59
  60 struct eDVBRegisteredDemux
  61 {
  62 DECLARE_REF(eDVBRegisteredDemux);
  63 public:
  64         iDVBAdapter *m_adapter;
  65         ePtr<eDVBDemux> m_demux;
  66         int m_inuse;
  67         eDVBRegisteredDemux(eDVBDemux *demux, iDVBAdapter *adap): m_adapter(adap), m_demux(demux), m_inuse(0) { }
  68 };
  69
  70 class eDVBAllocatedFrontend
  71 {
  72 DECLARE_REF(eDVBAllocatedFrontend);
  73 public:
  74
  75         eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe);
  76         ~eDVBAllocatedFrontend();
  77         eDVBFrontend &get() { return *m_fe->m_frontend; }
  78         operator eDVBRegisteredFrontend*() { return m_fe; }
  79         operator eDVBFrontend*() { return m_fe->m_frontend; }
  80
  81 private:
  82         eDVBRegisteredFrontend *m_fe;
  83 };
  84
  85 class eDVBAllocatedDemux
  86 {
  87 DECLARE_REF(eDVBAllocatedDemux);
  88 public:
  89
  90         eDVBAllocatedDemux(eDVBRegisteredDemux *demux);
  91         ~eDVBAllocatedDemux();
  92         eDVBDemux &get() { return *m_demux->m_demux; }
  93         operator eDVBRegisteredDemux*() { return m_demux; }
  94         operator eDVBDemux*() { return m_demux->m_demux; }
  95
  96 private:
  97         eDVBRegisteredDemux *m_demux;
  98 };
  99
 100 class iDVBAdapter: public iObject
 101 {
 102 public:
 103         virtual int getNumDemux() = 0;
 104         virtual RESULT getDemux(ePtr<eDVBDemux> &demux, int nr) = 0;
 105
 106         virtual int getNumFrontends() = 0;
 107         virtual RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr) = 0;
 108 };
 109
 110 class eDVBAdapterLinux: public iDVBAdapter
 111 {
 112 DECLARE_REF(eDVBAdapterLinux);
 113 public:
 114         eDVBAdapterLinux(int nr);
 115
 116         int getNumDemux();
 117         RESULT getDemux(ePtr<eDVBDemux> &demux, int nr);
 118
 119         int getNumFrontends();
 120         RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr);
 121
 122         static int exist(int nr);
 123 private:
 124         int m_nr;
 125         eSmartPtrList<eDVBFrontend> m_frontend;
 126         eSmartPtrList<eDVBDemux>    m_demux;
 127 };
 128 #endif // SWIG
 129
 130 SWIG_IGNORE(eDVBResourceManager);
 131 class eDVBResourceManager: public iObject, public Object
 132 {
 133         DECLARE_REF(eDVBResourceManager);
 134         int avail, busy;
 135
 136         eSmartPtrList<iDVBAdapter> m_adapter;
 137
 138         eSmartPtrList<eDVBRegisteredDemux> m_demux;
 139         eSmartPtrList<eDVBRegisteredFrontend> m_frontend;
 140
 141         void addAdapter(iDVBAdapter *adapter);
 142
 143                         /* allocates a frontend able to tune to frontend paramters 'feperm'.
 144                            the frontend must be tuned lateron. there is no guarante
 145                            that tuning will succeed - it just means that if this frontend
 146                            can't tune, no other frontend could do it.
 147
 148                            there might be a priority given to certain frontend/chid
 149                            combinations. this will be evaluated here. */
 150
 151         RESULT allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm);
 152         RESULT allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int index);
 153
 154                         /* allocate a demux able to filter on the selected frontend. */
 155         RESULT allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap);
 156
 157         struct active_channel
 158         {
 159                 eDVBChannelID m_channel_id;
 160                         /* we don't hold a reference here. */
 161                 eDVBChannel *m_channel;
 162
 163                 active_channel(const eDVBChannelID &chid, eDVBChannel *ch) : m_channel_id(chid), m_channel(ch) { }
 164         };
 165
 166         std::list<active_channel> m_active_channels;
 167
 168         ePtr<iDVBChannelList> m_list;
 169         ePtr<iDVBSatelliteEquipmentControl> m_sec;
 170         static eDVBResourceManager *instance;
 171
 172         friend class eDVBChannel;
 173         RESULT addChannel(const eDVBChannelID &chid, eDVBChannel *ch);
 174         RESULT removeChannel(eDVBChannel *ch);
 175
 176         Signal1<void,eDVBChannel*> m_channelAdded;
 177
 178         int canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm);
 179
 180         eUsePtr<iDVBChannel> m_cached_channel;
 181         Connection m_cached_channel_state_changed_conn;
 182         eTimer m_releaseCachedChannelTimer;
 183         void DVBChannelStateChanged(iDVBChannel*);
 184         void releaseCachedChannel();
 185         void feStateChanged();
 186 #ifndef SWIG
 187 public:
 188 #endif
 189         eDVBResourceManager();
 190         virtual ~eDVBResourceManager();
 191
 192         RESULT setChannelList(iDVBChannelList *list);
 193         RESULT getChannelList(ePtr<iDVBChannelList> &list);
 194
 195         enum {
 196                 errNoFrontend = -1,
 197                 errNoDemux    = -2,
 198                 errChidNotFound = -3
 199         };
 200
 201         RESULT connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection);
 202         int canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID &ignore);
 203
 204                 /* allocate channel... */
 205         RESULT allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel);
 206         RESULT allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel);
 207         static RESULT getInstance(ePtr<eDVBResourceManager> &);
 208 #ifdef SWIG
 209 public:
 210 #endif
 211         PSignal1<void,int> frontendUseMaskChanged;
 212         SWIG_VOID(RESULT) allocateRawChannel(eUsePtr<iDVBChannel> &SWIG_OUTPUT, int frontend_index);
 213 };
 214 SWIG_TEMPLATE_TYPEDEF(ePtr<eDVBResourceManager>, eDVBResourceManager);
 215 SWIG_EXTEND(ePtr<eDVBResourceManager>,
 216         static ePtr<eDVBResourceManager> getInstance()
 217         {
 218                 extern ePtr<eDVBResourceManager> NewResourceManagerPtr(void);
 219                 return NewResourceManagerPtr();
 220         }
 221 );
 222
 223 #ifndef SWIG
 224
 225 class eDVBChannelFilePush;
 226
 227         /* iDVBPVRChannel includes iDVBChannel. don't panic. */
 228 class eDVBChannel: public iDVBPVRChannel, public iFilePushScatterGather, public Object
 229 {
 230         DECLARE_REF(eDVBChannel);
 231         friend class eDVBResourceManager;
 232 public:
 233         eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend);
 234         virtual ~eDVBChannel();
 235
 236                 /* only for managed channels - effectively tunes to the channelid. should not be used... */
 237                 /* cannot be used for PVR channels. */
 238         RESULT setChannel(const eDVBChannelID &id, ePtr<iDVBFrontendParameters> &feparam);
 239         eDVBChannelID getChannelID() { return m_channel_id; }
 240
 241         RESULT connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection);
 242         RESULT connectEvent(const Slot2<void,iDVBChannel*,int> &eventChange, ePtr<eConnection> &connection);
 243
 244         RESULT getState(int &state);
 245
 246         RESULT setCIRouting(const eDVBCIRouting &routing);
 247         RESULT getDemux(ePtr<iDVBDemux> &demux, int cap);
 248         RESULT getFrontend(ePtr<iDVBFrontend> &frontend);
 249         RESULT getCurrentFrontendParameters(ePtr<iDVBFrontendParameters> &param);
 250
 251                 /* iDVBPVRChannel */
 252         RESULT playFile(const char *file);
 253         void stopFile();
 254
 255         void setCueSheet(eCueSheet *cuesheet);
 256
 257         RESULT getLength(pts_t &len);
 258         RESULT getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, int mode);
 259
 260         int getUseCount() { return m_use_count; }
 261 private:
 262         ePtr<eDVBAllocatedFrontend> m_frontend;
 263         ePtr<eDVBAllocatedDemux> m_demux, m_decoder_demux;
 264
 265         ePtr<iDVBFrontendParameters> m_current_frontend_parameters;
 266         eDVBChannelID m_channel_id;
 267         Signal1<void,iDVBChannel*> m_stateChanged;
 268         Signal2<void,iDVBChannel*,int> m_event;
 269         int m_state;
 270
 271                         /* for channel list */
 272         ePtr<eDVBResourceManager> m_mgr;
 273
 274         void frontendStateChanged(iDVBFrontend*fe);
 275         ePtr<eConnection> m_conn_frontendStateChanged;
 276
 277                 /* for PVR playback */
 278         eDVBChannelFilePush *m_pvr_thread;
 279         void pvrEvent(int event);
 280
 281         int m_pvr_fd_dst;
 282         eDVBTSTools m_tstools;
 283
 284         ePtr<eCueSheet> m_cue;
 285
 286         void cueSheetEvent(int event);
 287         ePtr<eConnection> m_conn_cueSheetEvent;
 288         int m_skipmode_m, m_skipmode_n;
 289
 290         std::list<std::pair<off_t, off_t> > m_source_span;
 291         void getNextSourceSpan(off_t current_offset, size_t bytes_read, off_t &start, size_t &size);
 292         void flushPVR(iDVBDemux *decoding_demux=0);
 293
 294         eSingleLock m_cuesheet_lock;
 295
 296         friend class eUsePtr<eDVBChannel>;
 297                 /* use count */
 298         oRefCount m_use_count;
 299         void AddUse();
 300         void ReleaseUse();
 301 };
 302 #endif // SWIG
 303
 304 #endif