/usr/include/libucsi/dvb/subtitling_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 | /*
* 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_SUBTITLING_DESCRIPTOR
#define _UCSI_DVB_SUBTITLING_DESCRIPTOR 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>
#include <libucsi/types.h>
/**
* dvb_subtitling_descriptor structure.
*/
struct dvb_subtitling_descriptor {
struct descriptor d;
/* struct dvb_subtitling_entry subtitles[] */
} __ucsi_packed;
/**
* An entry in the subtitles field of the a dvb_subtitling_descriptor.
*/
struct dvb_subtitling_entry {
iso639lang_t language_code;
uint8_t subtitling_type;
uint16_t composition_page_id;
uint16_t ancillary_page_id;
} __ucsi_packed;
/**
* Process a dvb_subtitling_descriptor.
*
* @param d Generic descriptor.
* @return dvb_subtitling_descriptor pointer, or NULL on error.
*/
static inline struct dvb_subtitling_descriptor*
dvb_subtitling_descriptor_codec(struct descriptor* d)
{
uint32_t pos = 0;
uint8_t* ptr = (uint8_t*) d + 2;
uint32_t len = d->len;
if (len % sizeof(struct dvb_subtitling_entry))
return NULL;
while(pos < len) {
bswap16(ptr+pos+4);
bswap16(ptr+pos+6);
pos += sizeof(struct dvb_subtitling_entry);
}
return (struct dvb_subtitling_descriptor*) d;
}
/**
* Iterator for subtitles field in dvb_subtitling_descriptor.
*
* @param d dvb_subtitling_descriptor pointer.
* @param pos Variable containing a pointer to current dvb_subtitling_entry.
*/
#define dvb_subtitling_descriptor_subtitles_for_each(d, pos) \
for ((pos) = dvb_subtitling_descriptor_subtitles_first(d); \
(pos); \
(pos) = dvb_subtitling_descriptor_subtitles_next(d, pos))
/******************************** PRIVATE CODE ********************************/
static inline struct dvb_subtitling_entry*
dvb_subtitling_descriptor_subtitles_first(struct dvb_subtitling_descriptor *d)
{
if (d->d.len == 0)
return NULL;
return (struct dvb_subtitling_entry *)
((uint8_t*) d + sizeof(struct dvb_subtitling_descriptor));
}
static inline struct dvb_subtitling_entry*
dvb_subtitling_descriptor_subtitles_next(struct dvb_subtitling_descriptor *d,
struct dvb_subtitling_entry *pos)
{
uint8_t *end = (uint8_t*) d + 2 + d->d.len;
uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_subtitling_entry);
if (next >= end)
return NULL;
return (struct dvb_subtitling_entry *) next;
}
#ifdef __cplusplus
}
#endif
#endif
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