Commit 9c6d6fcc authored by Georgi Chorbadzhiyski's avatar Georgi Chorbadzhiyski

dvb/si: Add support for descriptor 0x4d (Short event descriptor).

parent 287be092
/*****************************************************************************
* desc_4d.h: ETSI EN 300 468 Descriptor 0x4d: Short event descriptor
*****************************************************************************
* Copyright (C) 2011 Unix Solutions Ltd.
*
* Authors: Georgi Chorbadzhiyski <georgi@unixsol.org>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject
* to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*****************************************************************************/
/*
* Normative references:
* - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems)
*/
#ifndef __BITSTREAM_DVB_DESC_4D_H__
#define __BITSTREAM_DVB_DESC_4D_H__
#include <bitstream/common.h>
#include <bitstream/mpeg/psi/descriptors.h>
#include <bitstream/dvb/si/numbers.h>
#include <bitstream/dvb/si/strings.h>
#ifdef __cplusplus
extern "C"
{
#endif
/*****************************************************************************
* Descriptor 0x4d: Short event descriptor
*****************************************************************************/
#define DESC4D_HEADER_SIZE (DESC_HEADER_SIZE + 3)
static inline void desc4d_init(uint8_t *p_desc)
{
desc_set_tag(p_desc, 0x4d);
}
static inline const uint8_t *desc4d_get_lang(const uint8_t *p_desc)
{
return p_desc + DESC_HEADER_SIZE;
}
static inline void desc4d_set_lang(uint8_t *p_desc, const uint8_t p_lang[3])
{
p_desc[2] = p_lang[0];
p_desc[3] = p_lang[1];
p_desc[4] = p_lang[2];
}
static inline const uint8_t *desc4d_get_event_name(const uint8_t *p_desc,
uint8_t *pi_length)
{
const uint8_t *p = p_desc + DESC4D_HEADER_SIZE;
*pi_length = p[0];
return p + 1;
}
static inline void desc4d_set_event_name(uint8_t *p_desc,
const uint8_t *p_event_name,
uint8_t i_length)
{
uint8_t *p = p_desc + DESC4D_HEADER_SIZE;
p[0] = i_length;
memcpy(p + 1, p_event_name, i_length);
}
static inline uint8_t *desc4d_get_text(const uint8_t *p_desc,
uint8_t *pi_length)
{
const uint8_t *p = (uint8_t *)p_desc + DESC4D_HEADER_SIZE + 1 + p_desc[5];
*pi_length = p[0];
return (uint8_t *)p + 1;
}
static inline void desc4d_set_text(uint8_t *p_desc,
const uint8_t *p_text,
uint8_t i_length)
{
uint8_t *p = p_desc + DESC4D_HEADER_SIZE + 1 + p_desc[5];
p[0] = i_length;
memcpy(p + 1, p_text, i_length);
}
static inline void desc4d_set_length(uint8_t *p_desc)
{
uint8_t i_event_name_len, i_text_len;
desc4d_get_event_name(p_desc, &i_event_name_len);
desc4d_get_text(p_desc, &i_text_len);
desc_set_length(p_desc, DESC4D_HEADER_SIZE - DESC_HEADER_SIZE
+ 1 + i_event_name_len
+ 1 + i_text_len);
}
static inline bool desc4d_validate(const uint8_t *p_desc)
{
uint8_t i_length = desc_get_length(p_desc);
const uint8_t *p = p_desc + DESC4D_HEADER_SIZE;
p += *p + 1;
if (DESC4D_HEADER_SIZE + 2 > i_length + DESC_HEADER_SIZE ||
p + 1 - p_desc > i_length + DESC_HEADER_SIZE)
return false;
p += *p + 1;
if (p - p_desc > i_length + DESC_HEADER_SIZE)
return false;
return true;
}
static inline void desc4d_print(const uint8_t *p_desc,
f_print pf_print, void *print_opaque,
f_iconv pf_iconv, void *iconv_opaque,
print_type_t i_print_type)
{
uint8_t i_event_name_length, i_text_length;
const uint8_t *p_event_name = desc4d_get_event_name(p_desc, &i_event_name_length);
const uint8_t *p_text = desc4d_get_text(p_desc, &i_text_length);
char *psz_event_name = dvb_string_get(p_event_name, i_event_name_length,
pf_iconv, iconv_opaque);
char *psz_text = dvb_string_get(p_text, i_text_length,
pf_iconv, iconv_opaque);
switch (i_print_type) {
case PRINT_XML:
psz_event_name = dvb_string_xml_escape(psz_event_name);
psz_text = dvb_string_xml_escape(psz_text);
pf_print(print_opaque,
"<SHORT_EVENT_DESC lang=\"%3.3s\" event_name=\"%s\" text=\"%s\"/>",
(char *)desc4d_get_lang(p_desc), psz_event_name, psz_text);
break;
default:
pf_print(print_opaque,
" - desc 4d short_event lang=%3.3s event_name=\"%s\" text=\"%s\"",
(char *)desc4d_get_lang(p_desc), psz_event_name, psz_text);
}
free(psz_event_name);
free(psz_text);
}
#ifdef __cplusplus
}
#endif
#endif
......@@ -42,6 +42,7 @@
#include <bitstream/dvb/si/desc_47.h>
#include <bitstream/dvb/si/desc_48.h>
#include <bitstream/dvb/si/desc_4a.h>
#include <bitstream/dvb/si/desc_4d.h>
#include <bitstream/dvb/si/desc_56.h>
#include <bitstream/dvb/si/desc_59.h>
#include <bitstream/dvb/si/desc_5a.h>
......
......@@ -125,6 +125,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length,
CASE_DESC_ICONV(47)
CASE_DESC_ICONV(48)
CASE_DESC(4a)
CASE_DESC_ICONV(4d)
CASE_DESC(56)
CASE_DESC(59)
CASE_DESC(5a)
......
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