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156 lines
5.3 KiB
156 lines
5.3 KiB
/*****************************************************************************
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* desc_5e.h: ETSI EN 300 468 Descriptor 0x5e: Multilingual component descriptor
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*****************************************************************************
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* Copyright (C) 2009-2010 VideoLAN
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*
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* Authors: Christophe Massiot <massiot@via.ecp.fr>
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* Georgi Chorbadzhiyski <georgi@unixsol.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject
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* to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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/*
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* Normative references:
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* - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems)
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*/
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#ifndef __BITSTREAM_DVB_DESC_5E_H__
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#define __BITSTREAM_DVB_DESC_5E_H__
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#include <bitstream/common.h>
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#include <bitstream/mpeg/psi/descriptors.h>
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#include <bitstream/mpeg/psi/desc_0a.h>
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#include <bitstream/dvb/si/strings.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/*****************************************************************************
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* Descriptor 0x5e: Multilingual component descriptor
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*****************************************************************************/
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#define DESC5E_HEADER_SIZE (DESC_HEADER_SIZE + 1)
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#define DESC5E_DATA_SIZE 4
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static inline void desc5e_init(uint8_t *p_desc)
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{
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desc_set_tag(p_desc, 0x5e);
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desc_set_length(p_desc, DESC5E_HEADER_SIZE - DESC_HEADER_SIZE);
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}
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static inline uint8_t desc5e_get_component_tag(const uint8_t *p_desc)
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{
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return p_desc[2];
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}
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static inline void desc5e_set_component_tag(uint8_t *p_desc, uint8_t i_component_tag)
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{
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p_desc[2] = i_component_tag;
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}
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#define desc5en_set_code desc0an_set_code
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#define desc5en_get_code desc0an_get_code
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static inline uint8_t desc5en_get_text_length(const uint8_t *p_desc_n)
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{
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return p_desc_n[3];
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}
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static inline const uint8_t *desc5en_get_text(const uint8_t *p_desc_n, uint8_t *pi_length)
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{
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*pi_length = desc5en_get_text_length(p_desc_n);
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return p_desc_n + 4;
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}
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static inline void desc5en_set_text(uint8_t *p_desc_n, const uint8_t *p_text, uint8_t i_length)
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{
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p_desc_n[3] = i_length;
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memcpy(p_desc_n + 4, p_text, i_length);
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}
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static inline uint8_t *desc5e_get_data(const uint8_t *p_desc, uint8_t n)
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{
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const uint8_t *p_desc_n = p_desc + DESC5E_HEADER_SIZE;
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uint8_t i_desc_size = desc_get_length(p_desc);
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while (n) {
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if (p_desc_n + DESC5E_DATA_SIZE - p_desc > i_desc_size)
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return NULL;
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p_desc_n += DESC5E_DATA_SIZE + desc5en_get_text_length(p_desc_n);
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n--;
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}
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if (p_desc_n - p_desc > i_desc_size)
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return NULL;
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return (uint8_t *)p_desc_n;
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}
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static inline bool desc5e_validate(const uint8_t *p_desc)
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{
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const uint8_t *p_desc_n = p_desc + DESC5E_HEADER_SIZE;
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int i_desc_size = desc_get_length(p_desc);
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while (i_desc_size > (DESC5E_HEADER_SIZE - DESC_HEADER_SIZE))
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{
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uint8_t i_data_sz = DESC5E_DATA_SIZE + desc5en_get_text_length(p_desc_n);
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i_desc_size -= i_data_sz;
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p_desc_n += i_data_sz;
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}
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return i_desc_size == (DESC5E_HEADER_SIZE - DESC_HEADER_SIZE);
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}
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static inline void desc5e_print(const uint8_t *p_desc,
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f_print pf_print, void *print_opaque,
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f_iconv pf_iconv, void *iconv_opaque,
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print_type_t i_print_type)
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{
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const uint8_t *p_desc_n;
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uint8_t j = 0;
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while ((p_desc_n = desc5e_get_data(p_desc, j++)) != NULL) {
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uint8_t i_text_length;
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const uint8_t *p_text = desc5en_get_text(p_desc_n, &i_text_length);
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char *psz_text = dvb_string_get(p_text, i_text_length, pf_iconv, iconv_opaque);
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switch (i_print_type) {
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case PRINT_XML:
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psz_text = dvb_string_xml_escape(psz_text);
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pf_print(print_opaque,
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"<MULTILINGUAL_COMPONENT_DESC code=\"%3.3s\" component_tag=\"%u\" text=\"%s\"/>",
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desc5en_get_code(p_desc_n),
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desc5e_get_component_tag(p_desc),
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psz_text
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);
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break;
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default:
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pf_print(print_opaque,
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" - desc 5e multilingual_component code=\"%3.3s\" component_tag=%u text=\"%s\"",
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desc5en_get_code(p_desc_n),
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desc5e_get_component_tag(p_desc),
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psz_text
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);
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}
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free(psz_text);
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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