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157 lines
5.2 KiB
157 lines
5.2 KiB
/*****************************************************************************
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* desc_50.h: ETSI EN 300 468 Descriptor 0x50: Component descriptor
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*****************************************************************************
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* Copyright (C) 2011 Unix Solutions Ltd.
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*
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* Authors: 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_50_H__
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#define __BITSTREAM_DVB_DESC_50_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/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 0x50: Component descriptor
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*****************************************************************************/
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#define DESC50_HEADER_SIZE (DESC_HEADER_SIZE + 6)
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static inline void desc50_init(uint8_t *p_desc)
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{
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desc_set_tag(p_desc, 0x50);
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p_desc[2] = 0xf0;
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desc_set_length(p_desc, DESC50_HEADER_SIZE - DESC_HEADER_SIZE);
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}
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static inline uint8_t desc50_get_stream_content(const uint8_t *p_desc)
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{
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return p_desc[2] & 0x0f;
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}
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static inline void desc50_set_stream_content(uint8_t *p_desc, uint8_t i_stream_content)
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{
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p_desc[2] = 0xf0 | (i_stream_content & 0x0f);
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}
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static inline uint8_t desc50_get_component_type(const uint8_t *p_desc)
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{
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return p_desc[3];
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}
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static inline void desc50_set_component_type(uint8_t *p_desc, uint8_t i_component_type)
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{
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p_desc[3] = i_component_type;
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}
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static inline uint8_t desc50_get_component_tag(const uint8_t *p_desc)
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{
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return p_desc[4];
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}
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static inline void desc50_set_component_tag(uint8_t *p_desc, uint8_t i_component_tag)
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{
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p_desc[4] = i_component_tag;
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}
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static inline void desc50_set_language(uint8_t *p_desc, const uint8_t p_language[3])
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{
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p_desc[5] = p_language[0];
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p_desc[6] = p_language[1];
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p_desc[7] = p_language[2];
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}
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static inline const uint8_t *desc50_get_language(const uint8_t *p_desc)
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{
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return p_desc + 5;
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}
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static inline const uint8_t *desc50_get_text(const uint8_t *p_desc, uint8_t *pi_length)
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{
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*pi_length = desc_get_length(p_desc) - (DESC50_HEADER_SIZE - DESC_HEADER_SIZE);
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return p_desc + DESC50_HEADER_SIZE;
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}
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static inline void desc50_set_text(uint8_t *p_desc, const uint8_t *p_text, uint8_t i_length)
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{
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desc_set_length(p_desc, DESC50_HEADER_SIZE - DESC_HEADER_SIZE + i_length);
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memcpy(p_desc + DESC50_HEADER_SIZE, p_text, i_length);
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}
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static inline bool desc50_validate(const uint8_t *p_desc)
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{
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return desc_get_length(p_desc) >= DESC50_HEADER_SIZE - DESC_HEADER_SIZE;
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}
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static inline void desc50_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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uint8_t i_text_len;
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const uint8_t *p_text = desc50_get_text(p_desc, &i_text_len);
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char *psz_text = dvb_string_get(p_text, i_text_len, 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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"<COMPONENT_DESC stream_content=\"0x%02x\" component_type=\"0x%02x\""
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" component_tag=\"%u\" language=\"%3.3s\" text=\"%s\"/>",
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desc50_get_stream_content(p_desc),
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desc50_get_component_type(p_desc),
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desc50_get_component_tag(p_desc),
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(char *)desc50_get_language(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 50 component stream_content=0x%02x component_type=0x%02x"
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" component_tag=%u language=%3.3s text=\"%s\"/>",
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desc50_get_stream_content(p_desc),
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desc50_get_component_type(p_desc),
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desc50_get_component_tag(p_desc),
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(char *)desc50_get_language(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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#ifdef __cplusplus
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}
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#endif
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#endif
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