/usr/include/libucsi/dvb/frequency_list_descriptor.h is in dvb-apps 1.1.1+rev1500-1.1+b1.
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 | /*
* section and descriptor parser
*
* Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org)
* Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net)
*
* 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 _UCSI_DVB_FREQUENCY_LIST_DESCRIPTOR
#define _UCSI_DVB_FREQUENCY_LIST_DESCRIPTOR 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>
/**
* Possible values for coding_type.
*/
enum {
DVB_CODING_TYPE_SATELLITE = 0x01,
DVB_CODING_TYPE_CABLE = 0x02,
DVB_CODING_TYPE_TERRESTRIAL = 0x03,
};
/**
* dvb_frequency_list_descriptor structure.
*/
struct dvb_frequency_list_descriptor {
struct descriptor d;
EBIT2(uint8_t reserved : 6; ,
uint8_t coding_type : 2; );
/* uint32_t centre_frequencies [] */
} __ucsi_packed;
/**
* Process a dvb_frequency_list_descriptor.
*
* @param d Pointer to a generic descriptor structure.
* @return dvb_frequency_list_descriptor pointer, or NULL on error.
*/
static inline struct dvb_frequency_list_descriptor*
dvb_frequency_list_descriptor_codec(struct descriptor* d)
{
uint32_t pos = 0;
uint8_t* buf = (uint8_t*) d + 2;
uint32_t len = d->len;
pos += sizeof(struct dvb_frequency_list_descriptor) - 2;
if ((len - pos) % 4)
return NULL;
while(pos < len) {
bswap32(buf+pos);
pos += 4;
}
return (struct dvb_frequency_list_descriptor*) d;
}
/**
* Accessor for the centre_frequencies field of a dvb_frequency_list_descriptor.
*
* @param d dvb_frequency_list_descriptor pointer.
* @return Pointer to the field.
*/
static inline uint32_t *
dvb_frequency_list_descriptor_centre_frequencies(struct dvb_frequency_list_descriptor *d)
{
return (uint32_t *) ((uint8_t *) d + sizeof(struct dvb_frequency_list_descriptor));
}
/**
* Determine the number of entries in the centre_frequencies field of a dvb_frequency_list_descriptor.
*
* @param d dvb_frequency_list_descriptor pointer.
* @return The number of entries.
*/
static inline int
dvb_frequency_list_descriptor_centre_frequencies_count(struct dvb_frequency_list_descriptor *d)
{
return (d->d.len - 1) >> 2;
}
#ifdef __cplusplus
}
#endif
#endif
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