/usr/include/libucsi/atsc/time_shifted_service_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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 | /*
* 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_ATSC_TIME_SHIFTED_SERVICE_DESCRIPTOR
#define _UCSI_ATSC_TIME_SHIFTED_SERVICE_DESCRIPTOR 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>
#include <libucsi/types.h>
/**
* atsc_time_shifted_service_descriptor structure.
*/
struct atsc_time_shifted_service_descriptor {
struct descriptor d;
EBIT2(uint8_t reserved : 3; ,
uint8_t number_of_services : 5; );
/* struct atsc_time_shifted_service services[] */
} __ucsi_packed;
/**
* An entry in the services field of an atsc_time_shifted_service_descriptor.
*/
struct atsc_time_shifted_service {
EBIT2(uint16_t reserved : 6; ,
uint16_t time_shift :10; );
EBIT3(uint32_t reserved2 : 4; ,
uint32_t major_channel_number :10; ,
uint32_t minor_channel_number :10; );
} __ucsi_packed;
/**
* Process an atsc_time_shifted_service_descriptor.
*
* @param d Generic descriptor pointer.
* @return atsc_time_shifted_service_descriptor pointer, or NULL on error.
*/
static inline struct atsc_time_shifted_service_descriptor*
atsc_time_shifted_service_descriptor_codec(struct descriptor* d)
{
struct atsc_time_shifted_service_descriptor *ret =
(struct atsc_time_shifted_service_descriptor *) d;
uint8_t *buf = (uint8_t*) d + 2;
int pos = 0;
int idx;
if (d->len < 1)
return NULL;
pos++;
for(idx = 0; idx < ret->number_of_services; idx++) {
if (d->len < (pos + sizeof(struct atsc_time_shifted_service)))
return NULL;
bswap16(buf+pos);
bswap24(buf+pos+2);
pos += sizeof(struct atsc_time_shifted_service);
}
return (struct atsc_time_shifted_service_descriptor*) d;
}
/**
* Iterator for services field of a atsc_time_shifted_service_descriptor.
*
* @param d atsc_time_shifted_service_descriptor pointer.
* @param pos Variable holding a pointer to the current atsc_service_location_element.
* @param idx Integer used to count which service we are in.
*/
#define atsc_time_shifted_service_descriptor_services_for_each(d, pos, idx) \
for ((pos) = atsc_time_shifted_service_descriptor_services_first(d), idx=0; \
(pos); \
(pos) = atsc_time_shifted_service_descriptor_services_next(d, pos, ++idx))
/******************************** PRIVATE CODE ********************************/
static inline struct atsc_time_shifted_service*
atsc_time_shifted_service_descriptor_services_first(struct atsc_time_shifted_service_descriptor *d)
{
if (d->number_of_services == 0)
return NULL;
return (struct atsc_time_shifted_service *)
((uint8_t*) d + sizeof(struct atsc_time_shifted_service_descriptor));
}
static inline struct atsc_time_shifted_service*
atsc_time_shifted_service_descriptor_services_next(struct atsc_time_shifted_service_descriptor *d,
struct atsc_time_shifted_service *pos,
int idx)
{
uint8_t *next = (uint8_t *) pos + sizeof(struct atsc_time_shifted_service);
if (idx >= d->number_of_services)
return NULL;
return (struct atsc_time_shifted_service *) next;
}
#ifdef __cplusplus
}
#endif
#endif
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