fix cached channel handling
[enigma2.git] / 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