/usr/include/libucsi/atsc/service_location_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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | /*
* 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_SERVICE_LOCATION_DESCRIPTOR
#define _UCSI_ATSC_SERVICE_LOCATION_DESCRIPTOR 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>
#include <libucsi/types.h>
enum atsc_stream_types {
ATSC_STREAM_TYPE_VIDEO = 0x02,
ATSC_STREAM_TYPE_AUDIO = 0x81,
};
/**
* atsc_service_location_descriptor structure.
*/
struct atsc_service_location_descriptor {
struct descriptor d;
EBIT2(uint16_t reserved : 3; ,
uint16_t PCR_PID :13; );
uint8_t number_elements;
/* struct atsc_service_location_element elements[] */
} __ucsi_packed;
/**
* An entry in the elements field of an atsc_service_location_descriptor.
*/
struct atsc_caption_service_location_element {
uint8_t stream_type;
EBIT2(uint16_t reserved : 3; ,
uint16_t elementary_PID :13; );
iso639lang_t language_code;
} __ucsi_packed;
/**
* Process an atsc_service_location_descriptor.
*
* @param d Generic descriptor pointer.
* @return atsc_service_location_descriptor pointer, or NULL on error.
*/
static inline struct atsc_service_location_descriptor*
atsc_service_location_descriptor_codec(struct descriptor* d)
{
struct atsc_service_location_descriptor *ret =
(struct atsc_service_location_descriptor *) d;
uint8_t *buf = (uint8_t*) d + 2;
int pos = 0;
int idx;
if (d->len < 3)
return NULL;
bswap16(buf + pos);
pos+=3;
for(idx = 0; idx < ret->number_elements; idx++) {
if (d->len < (pos + sizeof(struct atsc_caption_service_entry)))
return NULL;
bswap16(buf+pos+1);
pos += sizeof(struct atsc_caption_service_entry);
}
return (struct atsc_service_location_descriptor*) d;
}
/**
* Iterator for elements field of a atsc_service_location_descriptor.
*
* @param d atsc_service_location_descriptor pointer.
* @param pos Variable holding a pointer to the current atsc_service_location_element.
* @param idx Integer used to count which dimension we are in.
*/
#define atsc_service_location_descriptor_elements_for_each(d, pos, idx) \
for ((pos) = atsc_service_location_descriptor_elements_first(d), idx=0; \
(pos); \
(pos) = atsc_service_location_descriptor_elements_next(d, pos, ++idx))
/******************************** PRIVATE CODE ********************************/
static inline struct atsc_caption_service_location_element*
atsc_service_location_descriptor_elements_first(struct atsc_service_location_descriptor *d)
{
if (d->number_elements == 0)
return NULL;
return (struct atsc_caption_service_location_element *)
((uint8_t*) d + sizeof(struct atsc_service_location_descriptor));
}
static inline struct atsc_caption_service_location_element*
atsc_service_location_descriptor_elements_next(struct atsc_service_location_descriptor *d,
struct atsc_caption_service_location_element *pos,
int idx)
{
uint8_t *next = (uint8_t *) pos + sizeof(struct atsc_caption_service_location_element);
if (idx >= d->number_elements)
return NULL;
return (struct atsc_caption_service_location_element *) next;
}
#ifdef __cplusplus
}
#endif
#endif
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