summaryrefslogtreecommitdiff
path: root/dvbdevice.h
blob: 7a54d8cf96be1e312a7207c33932f26fb5ce8981 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
/*
 * dvbdevice.h: The DVB device tuner interface
 *
 * See the main source file 'vdr.c' for copyright information and
 * how to reach the author.
 *
 * $Id: dvbdevice.h 3.2 2013/06/01 11:36:18 kls Exp $
 */

#ifndef __DVBDEVICE_H
#define __DVBDEVICE_H

#include <linux/dvb/frontend.h>
#include <linux/dvb/version.h>
#include "device.h"

#define DVBAPIVERSION (DVB_API_VERSION << 8 | DVB_API_VERSION_MINOR)

#if DVBAPIVERSION < 0x0500
#error VDR requires Linux DVB driver API version 5.0 or higher!
#endif

// --- Definitions for older DVB API versions --------------------------------

#if DVBAPIVERSION < 0x0501
enum {
  FE_CAN_2G_MODULATION = 0x10000000,
  };
enum {
  TRANSMISSION_MODE_4K = TRANSMISSION_MODE_AUTO + 1,
  };
#endif

#if DVBAPIVERSION < 0x0502
enum {
  FE_CAN_TURBO_FEC = 0x8000000,
  };
#endif

#if DVBAPIVERSION < 0x0503
enum {
  TRANSMISSION_MODE_1K = TRANSMISSION_MODE_4K + 1,
  TRANSMISSION_MODE_16K,
  TRANSMISSION_MODE_32K,
  };
enum {
  GUARD_INTERVAL_1_128 = GUARD_INTERVAL_AUTO + 1,
  GUARD_INTERVAL_19_128,
  GUARD_INTERVAL_19_256,
  };
enum {
  SYS_DVBT2 = SYS_DAB + 1,
  };
#endif

#if DVBAPIVERSION < 0x0505
#define DTV_ENUM_DELSYS  44
#endif

#if DVBAPIVERSION < 0x0508
enum {
  FE_CAN_MULTISTREAM = 0x4000000,
  };
#define DTV_STREAM_ID            42
#define DTV_DVBT2_PLP_ID_LEGACY  43
#endif

// --- End of definitions for older DVB API versions -------------------------

#define MAXDVBDEVICES  8
#define MAXDELIVERYSYSTEMS 8

#define DEV_VIDEO         "/dev/video"
#define DEV_DVB_BASE      "/dev/dvb"
#define DEV_DVB_ADAPTER   "adapter"
#define DEV_DVB_OSD       "osd"
#define DEV_DVB_FRONTEND  "frontend"
#define DEV_DVB_DVR       "dvr"
#define DEV_DVB_DEMUX     "demux"
#define DEV_DVB_VIDEO     "video"
#define DEV_DVB_AUDIO     "audio"
#define DEV_DVB_CA        "ca"

struct tDvbParameterMap {
  int userValue;
  int driverValue;
  const char *userString;
  };

const char *MapToUserString(int Value, const tDvbParameterMap *Map);
int MapToUser(int Value, const tDvbParameterMap *Map, const char **String = NULL);
int MapToDriver(int Value, const tDvbParameterMap *Map);
int UserIndex(int Value, const tDvbParameterMap *Map);
int DriverIndex(int Value, const tDvbParameterMap *Map);

extern const tDvbParameterMap InversionValues[];
extern const tDvbParameterMap BandwidthValues[];
extern const tDvbParameterMap CoderateValues[];
extern const tDvbParameterMap ModulationValues[];
extern const tDvbParameterMap SystemValuesSat[];
extern const tDvbParameterMap SystemValuesTerr[];
extern const tDvbParameterMap TransmissionValues[];
extern const tDvbParameterMap GuardValues[];
extern const tDvbParameterMap HierarchyValues[];
extern const tDvbParameterMap RollOffValues[];

class cDvbTransponderParameters {
friend class cDvbSourceParam;
private:
  char polarization;
  int inversion;
  int bandwidth;
  int coderateH;
  int coderateL;
  int modulation;
  int system;
  int transmission;
  int guard;
  int hierarchy;
  int rollOff;
  int streamId;
  int PrintParameter(char *p, char Name, int Value) const;
  const char *ParseParameter(const char *s, int &Value, const tDvbParameterMap *Map = NULL);
public:
  cDvbTransponderParameters(const char *Parameters = NULL);
  char Polarization(void) const { return polarization; }
  int Inversion(void) const { return inversion; }
  int Bandwidth(void) const { return bandwidth; }
  int CoderateH(void) const { return coderateH; }
  int CoderateL(void) const { return coderateL; }
  int Modulation(void) const { return modulation; }
  int System(void) const { return system; }
  int Transmission(void) const { return transmission; }
  int Guard(void) const { return guard; }
  int Hierarchy(void) const { return hierarchy; }
  int RollOff(void) const { return rollOff; }
  int StreamId(void) const { return streamId; }
  void SetPolarization(char Polarization) { polarization = Polarization; }
  void SetInversion(int Inversion) { inversion = Inversion; }
  void SetBandwidth(int Bandwidth) { bandwidth = Bandwidth; }
  void SetCoderateH(int CoderateH) { coderateH = CoderateH; }
  void SetCoderateL(int CoderateL) { coderateL = CoderateL; }
  void SetModulation(int Modulation) { modulation = Modulation; }
  void SetSystem(int System) { system = System; }
  void SetTransmission(int Transmission) { transmission = Transmission; }
  void SetGuard(int Guard) { guard = Guard; }
  void SetHierarchy(int Hierarchy) { hierarchy = Hierarchy; }
  void SetRollOff(int RollOff) { rollOff = RollOff; }
  void SetStreamId(int StreamId) { streamId = StreamId; }
  cString ToString(char Type) const;
  bool Parse(const char *s);
  };

class cDvbTuner;

/// The cDvbDevice implements a DVB device which can be accessed through the Linux DVB driver API.

class cDvbDevice : public cDevice {
protected:
  static cString DvbName(const char *Name, int Adapter, int Frontend);
  static int DvbOpen(const char *Name, int Adapter, int Frontend, int Mode, bool ReportError = false);
private:
  static bool Exists(int Adapter, int Frontend);
         ///< Checks whether the given adapter/frontend exists.
  static bool Probe(int Adapter, int Frontend);
         ///< Probes for existing DVB devices.
public:
  static bool Initialize(void);
         ///< Initializes the DVB devices.
         ///< Must be called before accessing any DVB functions.
         ///< Returns true if any devices are available.
protected:
  int adapter, frontend;
private:
  dvb_frontend_info frontendInfo;
  int deliverySystems[MAXDELIVERYSYSTEMS];
  int numDeliverySystems;
  int numModulations;
  int fd_dvr, fd_ca;
  static cMutex bondMutex;
  cDvbDevice *bondedDevice;
  mutable bool needsDetachBondedReceivers;
  bool QueryDeliverySystems(int fd_frontend);
public:
  cDvbDevice(int Adapter, int Frontend);
  virtual ~cDvbDevice();
  int Adapter(void) const { return adapter; }
  int Frontend(void) const { return frontend; }
  virtual bool Ready(void);
  virtual cString DeviceType(void) const;
  virtual cString DeviceName(void) const;
  static bool BondDevices(const char *Bondings);
       ///< Bonds the devices as defined in the given Bondings string.
       ///< A bonding is a sequence of device numbers (starting at 1),
       ///< separated by '+' characters. Several bondings are separated by
       ///< commas, as in "1+2,3+4+5".
       ///< Returns false if an error occurred.
  static void UnBondDevices(void);
       ///< Unbonds all devices.
  bool Bond(cDvbDevice *Device);
       ///< Bonds this device with the given Device, making both of them use
       ///< the same satellite cable and LNB. Only DVB-S(2) devices can be
       ///< bonded. When this function is called, the calling device must
       ///< not be bonded to any other device. The given Device, however,
       ///< may already be bonded to an other device. That way several devices
       ///< can be bonded together.
       ///< Returns true if the bonding was successful.
  void UnBond(void);
       ///< Removes this device from any bonding it might have with other
       ///< devices. If this device is not bonded with any other device,
       ///< nothing happens.
  bool BondingOk(const cChannel *Channel, bool ConsiderOccupied = false) const;
       ///< Returns true if this device is either not bonded to any other
       ///< device, or the given Channel is on the same satellite, polarization
       ///< and band as those the bonded devices are tuned to (if any).
       ///< If ConsiderOccupied is true, any bonded devices that are currently
       ///< occupied but not otherwise receiving will cause this function to
       ///< return false.

// Common Interface facilities:

private:
  cCiAdapter *ciAdapter;

// Channel facilities

private:
  cDvbTuner *dvbTuner;
public:
  virtual bool ProvidesDeliverySystem(int DeliverySystem) const;
  virtual bool ProvidesSource(int Source) const;
  virtual bool ProvidesTransponder(const cChannel *Channel) const;
  virtual bool ProvidesChannel(const cChannel *Channel, int Priority = IDLEPRIORITY, bool *NeedsDetachReceivers = NULL) const;
  virtual bool ProvidesEIT(void) const;
  virtual int NumProvidedSystems(void) const;
  virtual const cPositioner *Positioner(void) const;
  virtual int SignalStrength(void) const;
  virtual int SignalQuality(void) const;
  virtual const cChannel *GetCurrentlyTunedTransponder(void) const;
  virtual bool IsTunedToTransponder(const cChannel *Channel) const;
  virtual bool MaySwitchTransponder(const cChannel *Channel) const;
protected:
  virtual bool SetChannelDevice(const cChannel *Channel, bool LiveView);
public:
  virtual bool HasLock(int TimeoutMs = 0) const;

// PID handle facilities

protected:
  virtual bool SetPid(cPidHandle *Handle, int Type, bool On);

// Section filter facilities

protected:
  virtual int OpenFilter(u_short Pid, u_char Tid, u_char Mask);
  virtual void CloseFilter(int Handle);

// Common Interface facilities:

public:
  virtual bool HasCi(void);

// Audio facilities

protected:
  static int setTransferModeForDolbyDigital;
public:
  static void SetTransferModeForDolbyDigital(int Mode); // needs to be here for backwards compatibility
         ///< Controls how the DVB device handles Transfer Mode when replaying
         ///< Dolby Digital audio.
         ///< 0 = don't set "audio bypass" in driver/firmware, don't force Transfer Mode
         ///< 1 = set "audio bypass" in driver/firmware, force Transfer Mode (default)
         ///< 2 = don't set "audio bypass" in driver/firmware, force Transfer Mode

// Receiver facilities

private:
  cTSBuffer *tsBuffer;
protected:
  virtual bool OpenDvr(void);
  virtual void CloseDvr(void);
  virtual bool GetTSPacket(uchar *&Data);
  virtual void DetachAllReceivers(void);
  };

// A plugin that implements a DVB device derived from cDvbDevice needs to create
// a cDvbDeviceProbe derived object on the heap in order to have its Probe()
// function called, where it can actually create the appropriate device.
// The cDvbDeviceProbe object must be created in the plugin's constructor,
// and deleted in its destructor.

class cDvbDeviceProbe : public cListObject {
public:
  cDvbDeviceProbe(void);
  virtual ~cDvbDeviceProbe();
  static uint32_t GetSubsystemId(int Adapter, int Frontend);
  virtual bool Probe(int Adapter, int Frontend) = 0;
     ///< Probes for a DVB device at the given Adapter and creates the appropriate
     ///< object derived from cDvbDevice if applicable.
     ///< Returns true if a device has been created.
  };

extern cList<cDvbDeviceProbe> DvbDeviceProbes;

#endif //__DVBDEVICE_H