lib/dvb/dvb.h

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