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