lib/dvb/dvb.h

   1 #ifndef __dvb_dvb_h
   2 #define __dvb_dvb_h
   3
   4 #include <lib/base/ebase.h>
   5 #include <lib/base/filepush.h>
   6 #include <lib/base/elock.h>
   7 #include <lib/dvb/idvb.h>
   8 #include <lib/dvb/demux.h>
   9 #include <lib/dvb/frontend.h>
  10 #include <lib/dvb/tstools.h>
  11 #include <connection.h>
  12
  13 class eDVBChannel;
  14
  15         /* we do NOT handle resource conflicts here. instead, the allocateChannel
  16            fails, and the application has to see why the channel is allocated
  17            (and how to deallocate it). */
  18 class iDVBAdapter;
  19
  20 class eDVBRegisteredFrontend: public iObject, public Object
  21 {
  22         DECLARE_REF(eDVBRegisteredFrontend);
  23         eTimer *disable;
  24         void closeFrontend()
  25         {
  26                 if (!m_inuse && m_frontend->closeFrontend()) // frontend busy
  27                         disable->start(60000, true);  // retry close in 60secs
  28         }
  29 public:
  30         eDVBRegisteredFrontend(eDVBFrontend *fe, iDVBAdapter *adap)
  31                 :disable(new eTimer(eApp)), m_adapter(adap), m_frontend(fe), m_inuse(0)
  32         {
  33                 disable = new eTimer(eApp);
  34                 CONNECT(disable->timeout, eDVBRegisteredFrontend::closeFrontend);
  35         }
  36         void dec_use()
  37         {
  38                 if (!--m_inuse)
  39                         disable->start(3000, true);
  40         }
  41         void inc_use()
  42         {
  43                 if (++m_inuse == 1)
  44                         m_frontend->openFrontend();
  45         }
  46         iDVBAdapter *m_adapter;
  47         ePtr<eDVBFrontend> m_frontend;
  48         int m_inuse;
  49 };
  50
  51 struct eDVBRegisteredDemux
  52 {
  53 DECLARE_REF(eDVBRegisteredDemux);
  54 public:
  55         iDVBAdapter *m_adapter;
  56         ePtr<eDVBDemux> m_demux;
  57         int m_inuse;
  58         eDVBRegisteredDemux(eDVBDemux *demux, iDVBAdapter *adap): m_adapter(adap), m_demux(demux), m_inuse(0) { }
  59 };
  60
  61 class eDVBAllocatedFrontend
  62 {
  63 DECLARE_REF(eDVBAllocatedFrontend);
  64 public:
  65
  66         eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe);
  67         ~eDVBAllocatedFrontend();
  68         eDVBFrontend &get() { return *m_fe->m_frontend; }
  69         operator eDVBRegisteredFrontend*() { return m_fe; }
  70         operator eDVBFrontend*() { return m_fe->m_frontend; }
  71
  72 private:
  73         eDVBRegisteredFrontend *m_fe;
  74 };
  75
  76 class eDVBAllocatedDemux
  77 {
  78 DECLARE_REF(eDVBAllocatedDemux);
  79 public:
  80
  81         eDVBAllocatedDemux(eDVBRegisteredDemux *demux);
  82         ~eDVBAllocatedDemux();
  83         eDVBDemux &get() { return *m_demux->m_demux; }
  84         operator eDVBRegisteredDemux*() { return m_demux; }
  85         operator eDVBDemux*() { return m_demux->m_demux; }
  86
  87 private:
  88         eDVBRegisteredDemux *m_demux;
  89 };
  90
  91 class iDVBAdapter: public iObject
  92 {
  93 public:
  94         virtual int getNumDemux() = 0;
  95         virtual RESULT getDemux(ePtr<eDVBDemux> &demux, int nr) = 0;
  96
  97         virtual int getNumFrontends() = 0;
  98         virtual RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr) = 0;
  99 };
 100
 101 class eDVBAdapterLinux: public iDVBAdapter
 102 {
 103 DECLARE_REF(eDVBAdapterLinux);
 104 public:
 105         eDVBAdapterLinux(int nr);
 106
 107         int getNumDemux();
 108         RESULT getDemux(ePtr<eDVBDemux> &demux, int nr);
 109
 110         int getNumFrontends();
 111         RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr);
 112
 113         static int exist(int nr);
 114 private:
 115         int m_nr;
 116         eSmartPtrList<eDVBFrontend> m_frontend;
 117         eSmartPtrList<eDVBDemux>    m_demux;
 118 };
 119
 120 class eDVBResourceManager: public iObject, public Object
 121 {
 122         DECLARE_REF(eDVBResourceManager);
 123         int avail, busy;
 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
 169         eUsePtr<iDVBChannel> m_cached_channel;
 170         Connection m_cached_channel_state_changed_conn;
 171         eTimer m_releaseCachedChannelTimer;
 172         void DVBChannelStateChanged(iDVBChannel*);
 173         void releaseCachedChannel();
 174 public:
 175         eDVBResourceManager();
 176         virtual ~eDVBResourceManager();
 177
 178         static RESULT getInstance(ePtr<eDVBResourceManager> &ptr) { if (instance) { ptr = instance; return 0; } return -1; }
 179
 180         RESULT setChannelList(iDVBChannelList *list);
 181         RESULT getChannelList(ePtr<iDVBChannelList> &list);
 182
 183         enum {
 184                 errNoFrontend = -1,
 185                 errNoDemux    = -2,
 186                 errChidNotFound = -3
 187         };
 188
 189                 /* allocate channel... */
 190         RESULT allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel);
 191         RESULT allocateRawChannel(eUsePtr<iDVBChannel> &channel, int frontend_index);
 192         RESULT allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel);
 193
 194         RESULT connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection);
 195
 196         bool canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID &ignore);
 197 };
 198
 199         /* iDVBPVRChannel includes iDVBChannel. don't panic. */
 200 class eDVBChannel: public iDVBPVRChannel, public iFilePushScatterGather, public Object
 201 {
 202         DECLARE_REF(eDVBChannel);
 203         friend class eDVBResourceManager;
 204 public:
 205         eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend);
 206         virtual ~eDVBChannel();
 207
 208                 /* only for managed channels - effectively tunes to the channelid. should not be used... */
 209                 /* cannot be used for PVR channels. */
 210         RESULT setChannel(const eDVBChannelID &id, ePtr<iDVBFrontendParameters> &feparam);
 211         eDVBChannelID getChannelID() { return m_channel_id; }
 212
 213         RESULT connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection);
 214         RESULT connectEvent(const Slot2<void,iDVBChannel*,int> &eventChange, ePtr<eConnection> &connection);
 215
 216         RESULT getState(int &state);
 217
 218         RESULT setCIRouting(const eDVBCIRouting &routing);
 219         RESULT getDemux(ePtr<iDVBDemux> &demux, int cap);
 220         RESULT getFrontend(ePtr<iDVBFrontend> &frontend);
 221
 222                 /* iDVBPVRChannel */
 223         RESULT playFile(const char *file);
 224         void stopFile();
 225
 226         void setCueSheet(eCueSheet *cuesheet);
 227
 228         RESULT getLength(pts_t &len);
 229         RESULT getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, int mode);
 230
 231         int getUseCount() { return m_use_count; }
 232 private:
 233         ePtr<iDVBFrontendParameters> m_feparm; // for retune on lostlock
 234         ePtr<eDVBAllocatedFrontend> m_frontend;
 235         ePtr<eDVBAllocatedDemux> m_demux, m_decoder_demux;
 236
 237         ePtr<iDVBFrontendParameters> m_current_frontend_parameters;
 238         eDVBChannelID m_channel_id;
 239         Signal1<void,iDVBChannel*> m_stateChanged;
 240         Signal2<void,iDVBChannel*,int> m_event;
 241         int m_state;
 242
 243                         /* for channel list */
 244         ePtr<eDVBResourceManager> m_mgr;
 245
 246         void frontendStateChanged(iDVBFrontend*fe);
 247         ePtr<eConnection> m_conn_frontendStateChanged;
 248
 249                 /* for PVR playback */
 250         eFilePushThread *m_pvr_thread;
 251         void pvrEvent(int event);
 252
 253         int m_pvr_fd_src, m_pvr_fd_dst;
 254         eDVBTSTools m_tstools;
 255
 256         ePtr<eCueSheet> m_cue;
 257
 258         void cueSheetEvent(int event);
 259         ePtr<eConnection> m_conn_cueSheetEvent;
 260         int m_skipmode_m, m_skipmode_n;
 261
 262         std::list<std::pair<off_t, off_t> > m_source_span;
 263         void getNextSourceSpan(off_t current_offset, size_t bytes_read, off_t &start, size_t &size);
 264         void flushPVR(iDVBDemux *decoding_demux=0);
 265
 266         eSingleLock m_cuesheet_lock;
 267
 268         friend class eUsePtr<eDVBChannel>;
 269                 /* use count */
 270         oRefCount m_use_count;
 271         void AddUse();
 272         void ReleaseUse();
 273 };
 274
 275 #endif