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
  12         /* we do NOT handle resource conflicts here. instead, the allocateChannel
  13            fails, and the application has to see why the channel is allocated
  14            (and how to deallocate it). */
  15 class iDVBAdapter;
  16
  17 class eDVBRegisteredFrontend: public iObject
  18 {
  19 DECLARE_REF(eDVBRegisteredFrontend);
  20 public:
  21         iDVBAdapter *m_adapter;
  22         ePtr<eDVBFrontend> m_frontend;
  23         int m_inuse;
  24         eDVBRegisteredFrontend(eDVBFrontend *fe, iDVBAdapter *adap): m_adapter(adap), m_frontend(fe), m_inuse(0) { }
  25 };
  26
  27 struct eDVBRegisteredDemux
  28 {
  29 DECLARE_REF(eDVBRegisteredDemux);
  30 public:
  31         iDVBAdapter *m_adapter;
  32         ePtr<eDVBDemux> m_demux;
  33         int m_inuse;
  34         eDVBRegisteredDemux(eDVBDemux *demux, iDVBAdapter *adap): m_adapter(adap), m_demux(demux), m_inuse(0) { }
  35 };
  36
  37 class eDVBAllocatedFrontend
  38 {
  39 DECLARE_REF(eDVBAllocatedFrontend);
  40 public:
  41
  42         eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe);
  43         ~eDVBAllocatedFrontend();
  44         eDVBFrontend &get() { return *m_fe->m_frontend; }
  45         operator eDVBRegisteredFrontend*() { return m_fe; }
  46         operator eDVBFrontend*() { return m_fe->m_frontend; }
  47
  48 private:
  49         eDVBRegisteredFrontend *m_fe;
  50 };
  51
  52 class eDVBAllocatedDemux
  53 {
  54 DECLARE_REF(eDVBAllocatedDemux);
  55 public:
  56
  57         eDVBAllocatedDemux(eDVBRegisteredDemux *demux);
  58         ~eDVBAllocatedDemux();
  59         eDVBDemux &get() { return *m_demux->m_demux; }
  60         operator eDVBRegisteredDemux*() { return m_demux; }
  61         operator eDVBDemux*() { return m_demux->m_demux; }
  62
  63 private:
  64         eDVBRegisteredDemux *m_demux;
  65 };
  66
  67 class iDVBAdapter: public iObject
  68 {
  69 public:
  70         virtual int getNumDemux() = 0;
  71         virtual RESULT getDemux(ePtr<eDVBDemux> &demux, int nr) = 0;
  72
  73         virtual int getNumFrontends() = 0;
  74         virtual RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr) = 0;
  75 };
  76
  77 class eDVBAdapterLinux: public iDVBAdapter
  78 {
  79 DECLARE_REF(eDVBAdapterLinux);
  80 public:
  81         eDVBAdapterLinux(int nr);
  82
  83         int getNumDemux();
  84         RESULT getDemux(ePtr<eDVBDemux> &demux, int nr);
  85
  86         int getNumFrontends();
  87         RESULT getFrontend(ePtr<eDVBFrontend> &fe, int nr);
  88
  89         static int exist(int nr);
  90 private:
  91         int m_nr;
  92         eSmartPtrList<eDVBFrontend> m_frontend;
  93         eSmartPtrList<eDVBDemux>    m_demux;
  94 };
  95
  96 class eDVBResourceManager: public iObject
  97 {
  98         DECLARE_REF(eDVBResourceManager);
  99         int avail, busy;
 100
 101         eSmartPtrList<iDVBAdapter> m_adapter;
 102
 103         eSmartPtrList<eDVBRegisteredDemux> m_demux;
 104         eSmartPtrList<eDVBRegisteredFrontend> m_frontend;
 105
 106         void addAdapter(iDVBAdapter *adapter);
 107
 108                         /* allocates a frontend able to tune to frontend paramters 'feperm'.
 109                            the frontend must be tuned lateron. there is no guarante
 110                            that tuning will succeed - it just means that if this frontend
 111                            can't tune, no other frontend could do it.
 112
 113                            there might be a priority given to certain frontend/chid
 114                            combinations. this will be evaluated here. */
 115
 116         RESULT allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm);
 117         RESULT allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int index);
 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
 143         bool canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm);
 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, int frontend_index);
 162         RESULT allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel);
 163
 164         RESULT connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection);
 165
 166         bool canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID &ignore);
 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(iDVBDemux *decoding_demux, pts_t &pos);
 195         RESULT seekTo(iDVBDemux *decoding_demux, 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(iDVBDemux *decoding_demux, const off_t &off);
 199
 200         int getUseCount() { return m_use_count; }
 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