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 channelID "chid".
 110                            the frontend must be tuned lateron. there is no guarante
 111                            that tuning will suceed - 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<iDVBFrontendParameters> &feparm, ePtr<eDVBAllocatedFrontend> &fe);
 118
 119                         /* allocate a demux able to filter on the selected frontend. */
 120         RESULT allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap);
 121
 122         struct active_channel
 123         {
 124                 eDVBChannelID m_channel_id;
 125                         /* we don't hold a reference here. */
 126                 eDVBChannel *m_channel;
 127
 128                 active_channel(const eDVBChannelID &chid, eDVBChannel *ch) : m_channel_id(chid), m_channel(ch) { }
 129         };
 130
 131         std::list<active_channel> m_active_channels;
 132
 133         ePtr<iDVBChannelList> m_list;
 134         ePtr<iDVBSatelliteEquipmentControl> m_sec;
 135         static eDVBResourceManager *instance;
 136
 137         friend class eDVBChannel;
 138         RESULT addChannel(const eDVBChannelID &chid, eDVBChannel *ch);
 139         RESULT removeChannel(eDVBChannel *ch);
 140
 141         Signal1<void,eDVBChannel*> m_channelAdded;
 142         Signal1<void,eDVBChannel*> m_channelRemoved;
 143         Signal1<void,iDVBChannel*> m_channelRunning;
 144 public:
 145         eDVBResourceManager();
 146         virtual ~eDVBResourceManager();
 147
 148         static RESULT getInstance(ePtr<eDVBResourceManager> &ptr) { if (instance) { ptr = instance; return 0; } return -1; }
 149
 150         RESULT setChannelList(iDVBChannelList *list);
 151         RESULT getChannelList(ePtr<iDVBChannelList> &list);
 152
 153         enum {
 154                 errNoFrontend = -1,
 155                 errNoDemux    = -2,
 156                 errChidNotFound = -3
 157         };
 158
 159                 /* allocate channel... */
 160         RESULT allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel);
 161         RESULT allocateRawChannel(eUsePtr<iDVBChannel> &channel);
 162         RESULT allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel);
 163
 164         RESULT connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection);
 165         RESULT connectChannelRemoved(const Slot1<void,eDVBChannel*> &channelRemoved, ePtr<eConnection> &connection);
 166         RESULT connectChannelRunning(const Slot1<void,iDVBChannel*> &channelRemoved, ePtr<eConnection> &connection);
 167 };
 168
 169 class eFilePushThread;
 170
 171         /* iDVBPVRChannel includes iDVBChannel. don't panic. */
 172 class eDVBChannel: public iDVBPVRChannel, public Object
 173 {
 174         DECLARE_REF(eDVBChannel);
 175 public:
 176         eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend);
 177         virtual ~eDVBChannel();
 178
 179                 /* only for managed channels - effectively tunes to the channelid. should not be used... */
 180                 /* cannot be used for PVR channels. */
 181         RESULT setChannel(const eDVBChannelID &id, ePtr<iDVBFrontendParameters> &feparam);
 182         eDVBChannelID getChannelID() { return m_channel_id; }
 183
 184         RESULT connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection);
 185         RESULT getState(int &state);
 186
 187         RESULT setCIRouting(const eDVBCIRouting &routing);
 188         RESULT getDemux(ePtr<iDVBDemux> &demux, int cap);
 189         RESULT getFrontend(ePtr<iDVBFrontend> &frontend);
 190
 191                 /* iDVBPVRChannel */
 192         RESULT playFile(const char *file);
 193         RESULT getLength(pts_t &len);
 194         RESULT getCurrentPosition(pts_t &pos);
 195         RESULT seekTo(int relative, pts_t &pts);
 196                         /* seeking to relative positions won't work -
 197                            there is an unknown amount of buffers in between */
 198         RESULT seekToPosition(const off_t &off);
 199
 200 private:
 201         ePtr<eDVBAllocatedFrontend> m_frontend;
 202         ePtr<eDVBAllocatedDemux> m_demux, m_decoder_demux;
 203
 204         ePtr<iDVBFrontendParameters> m_current_frontend_parameters;
 205         eDVBChannelID m_channel_id;
 206         Signal1<void,iDVBChannel*> m_stateChanged;
 207         int m_state;
 208
 209                         /* for channel list */
 210         ePtr<eDVBResourceManager> m_mgr;
 211
 212         void frontendStateChanged(iDVBFrontend*fe);
 213         ePtr<eConnection> m_conn_frontendStateChanged;
 214
 215                 /* for PVR playback */
 216         eFilePushThread *m_pvr_thread;
 217         int m_pvr_fd_src, m_pvr_fd_dst;
 218         eDVBTSTools m_tstools;
 219
 220         friend class eUsePtr<eDVBChannel>;
 221                 /* use count */
 222         oRefCount m_use_count;
 223         void AddUse();
 224         void ReleaseUse();
 225 };
 226
 227 #endif