This file is indexed.

/usr/include/libdvbapi/dvbfe.h is in dvb-apps 1.1.1+rev1500-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
/*
 * libdvbfe - a DVB frontend library
 *
 * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net)
 * Copyright (C) 2005 Manu Abraham <abraham.manu@gmail.com>
 * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#ifndef LIBDVBFE_H
#define LIBDVBFE_H 1

#ifdef __cplusplus
extern "C"
{
#endif

#include <stdint.h>

/**
 * The types of frontend we support.
 */
enum dvbfe_type {
	DVBFE_TYPE_DVBS,
	DVBFE_TYPE_DVBC,
	DVBFE_TYPE_DVBT,
	DVBFE_TYPE_ATSC,
};

enum dvbfe_spectral_inversion {
	DVBFE_INVERSION_OFF,
	DVBFE_INVERSION_ON,
	DVBFE_INVERSION_AUTO
};

enum dvbfe_code_rate {
	DVBFE_FEC_NONE,
	DVBFE_FEC_1_2,
	DVBFE_FEC_2_3,
	DVBFE_FEC_3_4,
	DVBFE_FEC_4_5,
	DVBFE_FEC_5_6,
	DVBFE_FEC_6_7,
	DVBFE_FEC_7_8,
	DVBFE_FEC_8_9,
	DVBFE_FEC_AUTO
};

enum dvbfe_dvbt_const {
	DVBFE_DVBT_CONST_QPSK,
	DVBFE_DVBT_CONST_QAM_16,
	DVBFE_DVBT_CONST_QAM_32,
	DVBFE_DVBT_CONST_QAM_64,
	DVBFE_DVBT_CONST_QAM_128,
	DVBFE_DVBT_CONST_QAM_256,
	DVBFE_DVBT_CONST_AUTO
};

enum dvbfe_dvbc_mod {
	DVBFE_DVBC_MOD_QAM_16,
	DVBFE_DVBC_MOD_QAM_32,
	DVBFE_DVBC_MOD_QAM_64,
	DVBFE_DVBC_MOD_QAM_128,
	DVBFE_DVBC_MOD_QAM_256,
	DVBFE_DVBC_MOD_AUTO,
};

enum dvbfe_atsc_mod {
	DVBFE_ATSC_MOD_QAM_64,
	DVBFE_ATSC_MOD_QAM_256,
	DVBFE_ATSC_MOD_VSB_8,
	DVBFE_ATSC_MOD_VSB_16,
	DVBFE_ATSC_MOD_AUTO
};

enum dvbfe_dvbt_transmit_mode {
	DVBFE_DVBT_TRANSMISSION_MODE_2K,
	DVBFE_DVBT_TRANSMISSION_MODE_8K,
	DVBFE_DVBT_TRANSMISSION_MODE_AUTO
};

enum dvbfe_dvbt_bandwidth {
	DVBFE_DVBT_BANDWIDTH_8_MHZ,
	DVBFE_DVBT_BANDWIDTH_7_MHZ,
	DVBFE_DVBT_BANDWIDTH_6_MHZ,
	DVBFE_DVBT_BANDWIDTH_AUTO
};

enum dvbfe_dvbt_guard_interval {
	DVBFE_DVBT_GUARD_INTERVAL_1_32,
	DVBFE_DVBT_GUARD_INTERVAL_1_16,
	DVBFE_DVBT_GUARD_INTERVAL_1_8,
	DVBFE_DVBT_GUARD_INTERVAL_1_4,
	DVBFE_DVBT_GUARD_INTERVAL_AUTO
};

enum dvbfe_dvbt_hierarchy {
	DVBFE_DVBT_HIERARCHY_NONE,
	DVBFE_DVBT_HIERARCHY_1,
	DVBFE_DVBT_HIERARCHY_2,
	DVBFE_DVBT_HIERARCHY_4,
	DVBFE_DVBT_HIERARCHY_AUTO
};

/**
 * Structure used to store and communicate frontend parameters.
 */
struct dvbfe_parameters {
	uint32_t frequency;
	enum dvbfe_spectral_inversion inversion;
	union {
		struct {
			uint32_t			symbol_rate;
			enum dvbfe_code_rate		fec_inner;
		} dvbs;

		struct {
			uint32_t			symbol_rate;
			enum dvbfe_code_rate		fec_inner;
			enum dvbfe_dvbc_mod		modulation;
		} dvbc;

		struct {
			enum dvbfe_dvbt_bandwidth	bandwidth;
			enum dvbfe_code_rate		code_rate_HP;
			enum dvbfe_code_rate		code_rate_LP;
			enum dvbfe_dvbt_const		constellation;
			enum dvbfe_dvbt_transmit_mode	transmission_mode;
			enum dvbfe_dvbt_guard_interval	guard_interval;
			enum dvbfe_dvbt_hierarchy	hierarchy_information;
		} dvbt;

		struct {
			enum dvbfe_atsc_mod		modulation;
		} atsc;
	} u;
};

enum dvbfe_sec_voltage {
	DVBFE_SEC_VOLTAGE_13,
	DVBFE_SEC_VOLTAGE_18,
	DVBFE_SEC_VOLTAGE_OFF
};

enum dvbfe_sec_tone_mode {
	DVBFE_SEC_TONE_ON,
	DVBFE_SEC_TONE_OFF
};

enum dvbfe_sec_mini_cmd {
	DVBFE_SEC_MINI_A,
	DVBFE_SEC_MINI_B
};

/**
 * Mask of values used in the dvbfe_get_info() call.
 */
enum dvbfe_info_mask {
	DVBFE_INFO_LOCKSTATUS			= 0x01,
	DVBFE_INFO_FEPARAMS			= 0x02,
	DVBFE_INFO_BER				= 0x04,
	DVBFE_INFO_SIGNAL_STRENGTH		= 0x08,
	DVBFE_INFO_SNR				= 0x10,
	DVBFE_INFO_UNCORRECTED_BLOCKS		= 0x20,
};

/**
 * Structure containing values used by the dvbfe_get_info() call.
 */
struct dvbfe_info {
	enum dvbfe_type type;			/* always retrieved */
	const char *name;			/* always retrieved */
	unsigned int signal     : 1;		/* } DVBFE_INFO_LOCKSTATUS */
	unsigned int carrier    : 1;		/* } */
	unsigned int viterbi    : 1;		/* } */
	unsigned int sync       : 1;		/* } */
	unsigned int lock       : 1;		/* } */
	struct dvbfe_parameters feparams;	/* DVBFE_INFO_FEPARAMS */
	uint32_t ber;				/* DVBFE_INFO_BER */
	uint16_t signal_strength;		/* DVBFE_INFO_SIGNAL_STRENGTH */
	uint16_t snr;				/* DVBFE_INFO_SNR */
	uint32_t ucblocks;			/* DVBFE_INFO_UNCORRECTED_BLOCKS */
};

/**
 * Possible types of query used in dvbfe_get_info.
 *
 * DVBFE_INFO_QUERYTYPE_IMMEDIATE  - interrogate frontend for most up to date values.
 * DVBFE_INFO_QUERYTYPE_LOCKCHANGE - return details from queued lock status
 * 				     change events, or wait for one to occur
 * 				     if none are queued.
 */
enum dvbfe_info_querytype {
	DVBFE_INFO_QUERYTYPE_IMMEDIATE,
	DVBFE_INFO_QUERYTYPE_LOCKCHANGE,
};


/**
 * Frontend handle datatype.
 */
struct dvbfe_handle;

/**
 * Open a DVB frontend.
 *
 * @param adapter DVB adapter ID.
 * @param frontend Frontend ID of that adapter to open.
 * @param readonly If 1, frontend will be opened in readonly mode only.
 * @return A handle on success, or NULL on failure.
 */
extern struct dvbfe_handle *dvbfe_open(int adapter, int frontend, int readonly);

/**
 * Close a DVB frontend.
 *
 * @param fehandle Handle opened with dvbfe_open().
 */
extern void dvbfe_close(struct dvbfe_handle *handle);

/**
 * Set the frontend tuning parameters.
 *
 * Note: this function provides only the basic tuning operation; you might want to
 * investigate dvbfe_set_sec() in sec.h for a unified device tuning operation.
 *
 * @param fehandle Handle opened with dvbfe_open().
 * @param params Params to set.
 * @param timeout <0 => wait forever for lock. 0=>return immediately, >0=>
 * number of milliseconds to wait for a lock.
 * @return 0 on locked (or if timeout==0 and everything else worked), or
 * nonzero on failure (including no lock).
 */
extern int dvbfe_set(struct dvbfe_handle *fehandle,
		     struct dvbfe_parameters *params,
		     int timeout);

/**
 * Retrieve information about the frontend.
 *
 * @param fehandle Handle opened with dvbfe_open().
 * @param querymask ORed bitmask of desired DVBFE_INFO_* values.
 * @param result Where to put the retrieved results.
 * @param querytype Type of query requested.
 * @param timeout Timeout in ms to use if querytype==lockchange (0=>no timeout, <0=> wait forever).
 * @return ORed bitmask of DVBFE_INFO_* indicating which values were read successfully.
 */
extern int dvbfe_get_info(struct dvbfe_handle *fehandle,
			  enum dvbfe_info_mask querymask,
			  struct dvbfe_info *result,
			  enum dvbfe_info_querytype querytype,
			  int timeout);

/**
 * Get a file descriptor for polling for lock status changes.
 *
 * @param fehandle Handle opened with dvbfe_open().
 * @return FD for polling.
 */
extern int dvbfe_get_pollfd(struct dvbfe_handle *handle);

/**
 *	Tone/Data Burst control
 * 	@param fehandle Handle opened with dvbfe_open().
 *	@param tone, SEC_TONE_ON/SEC_TONE_OFF
 */
extern int dvbfe_set_22k_tone(struct dvbfe_handle *handle, enum dvbfe_sec_tone_mode tone);

/**
 *	22khz Tone control
 * 	@param fehandle Handle opened with dvbfe_open().
 *	@param adapter, minicmd, SEC_MINI_A/SEC_MINI_B
 */
extern int dvbfe_set_tone_data_burst(struct dvbfe_handle *handle, enum dvbfe_sec_mini_cmd minicmd);

/**
 *	Voltage control
 * 	@param fehandle Handle opened with dvbfe_open().
 *	@param polarization, SEC_VOLTAGE_13/SEC_VOLTAGE_18/SEC_VOLTAGE_OFF
 */
extern int dvbfe_set_voltage(struct dvbfe_handle *handle, enum dvbfe_sec_voltage voltage);

/**
 *	High LNB voltage control (increases voltage by 1v to compensate for long cables)
 * 	@param fehandle Handle opened with dvbfe_open().
 *	@param on 1 to enable, 0 to disable.
 */
extern int dvbfe_set_high_lnb_voltage(struct dvbfe_handle *fehandle, int on);

/**
 *	Send a legacy Dish Networks command
 * 	@param fehandle Handle opened with dvbfe_open().
 *	@param cmd, the command to send
 */
extern int dvbfe_do_dishnetworks_legacy_command(struct dvbfe_handle *handle, unsigned int cmd);

/**
 *	Send a DiSEqC Command
 * 	@param fehandle Handle opened with dvbfe_open().
 *	@param data, a pointer to am array containing the data to be sent.
 *      @param len Length of data in  bytes, max 6 bytes.
 */
extern int dvbfe_do_diseqc_command(struct dvbfe_handle *handle, uint8_t *data, uint8_t len);

/**
 * Read a DISEQC response from the frontend.
 *
 * @param fehandle Handle opened with dvbfe_open().
 * @param timeout Timeout for DISEQC response.
 * @param buf Buffer to store response in.
 * @param len Number of bytes in buffer.
 * @return >= 0 on success (number of received bytes), <0 on failure.
 */
extern int dvbfe_diseqc_read(struct dvbfe_handle *fehandle, int timeout, unsigned char *buf, unsigned int len);

#ifdef __cplusplus
}
#endif

#endif // LIBDVBFE_H