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197 lines
6.8 KiB
197 lines
6.8 KiB
/*****************************************************************************
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* desc_64.h: ETSI EN 300 468 Descriptor 0x64: Data broadcast 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_64_H__
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#define __BITSTREAM_DVB_DESC_64_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 0x64: Data broadcast descriptor
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*****************************************************************************/
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#define DESC64_HEADER_SIZE (DESC_HEADER_SIZE + 8)
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static inline void desc64_init(uint8_t *p_desc)
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{
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desc_set_tag(p_desc, 0x64);
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desc_set_length(p_desc, DESC64_HEADER_SIZE - DESC_HEADER_SIZE);
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}
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static inline uint16_t desc64_get_broadcast_id(const uint8_t *p_desc)
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{
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return (p_desc[2] << 8) | p_desc[3];
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}
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static inline void desc64_set_broadcast_id(uint8_t *p_desc, uint16_t i_broadcast_id)
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{
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p_desc[2] = (i_broadcast_id >> 8) & 0xff;
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p_desc[3] = i_broadcast_id & 0xff;
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}
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static inline uint8_t desc64_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 desc64_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 uint8_t desc64_get_selector_byte_length(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 *desc64_get_selector_byte(const uint8_t *p_desc, uint8_t *pi_length)
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{
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*pi_length = desc64_get_selector_byte_length(p_desc);
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return p_desc + 6;
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}
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static inline void desc64_set_selector_byte(uint8_t *p_desc, const uint8_t *p_selector_byte, uint8_t i_length)
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{
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p_desc[5] = i_length;
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memcpy(p_desc + 6, p_selector_byte, i_length);
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}
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static inline const uint8_t *desc64_get_lang(const uint8_t *p_desc)
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{
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return p_desc + 6 + desc64_get_selector_byte_length(p_desc);
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}
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static inline void desc64_set_lang(uint8_t *p_desc, const uint8_t p_lang[3])
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{
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uint8_t *p = p_desc + 6 + desc64_get_selector_byte_length(p_desc);
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p[0] = p_lang[0];
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p[1] = p_lang[1];
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p[2] = p_lang[2];
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}
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static inline uint8_t desc64_get_text_length(const uint8_t *p_desc)
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{
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return p_desc[6 + desc64_get_selector_byte_length(p_desc) + 3];
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}
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static inline const uint8_t *desc64_get_text(const uint8_t *p_desc, uint8_t *pi_length)
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{
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*pi_length = desc64_get_text_length(p_desc);
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return p_desc + 6 + desc64_get_selector_byte_length(p_desc) + 3 + 1;
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}
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static inline void desc64_set_text(uint8_t *p_desc, const uint8_t *p_text, uint8_t i_length)
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{
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uint8_t *p = p_desc + 6 + desc64_get_selector_byte_length(p_desc) + 3;
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p[0] = i_length;
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memcpy(p + 1, p_text, i_length);
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}
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static inline void desc64_set_length(uint8_t *p_desc)
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{
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desc_set_length(p_desc, DESC64_HEADER_SIZE - DESC_HEADER_SIZE
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+ desc64_get_selector_byte_length(p_desc)
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+ desc64_get_text_length(p_desc));
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}
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static inline bool desc64_validate(const uint8_t *p_desc)
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{
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int i_length = desc_get_length(p_desc) - (DESC64_HEADER_SIZE - DESC_HEADER_SIZE);
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i_length -= desc64_get_selector_byte_length(p_desc);
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i_length -= desc64_get_text_length(p_desc);
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return i_length == 0;
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}
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static inline void desc64_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_selector_byte_length, i_text_length, i;
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const uint8_t *p_selector_byte = desc64_get_selector_byte(p_desc, &i_selector_byte_length);
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const uint8_t *p_text = desc64_get_text(p_desc, &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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char psz_selector_byte[2 * 255 + 1];
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char psz_selector_byte_txt[255 + 1];
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for (i = 0; i < i_selector_byte_length; i++) {
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sprintf(psz_selector_byte + 2 * i, "%02x", p_selector_byte[i]);
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if (p_selector_byte[i] >= 32 && p_selector_byte[i] <= 127 && p_selector_byte[i] != '"')
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psz_selector_byte_txt[i] = p_selector_byte[i];
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else
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psz_selector_byte_txt[i] = '.';
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}
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psz_selector_byte[2 * i] = '\0';
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psz_selector_byte_txt[i] = '\0';
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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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"<DATA_BROADCAST_DESC broadcast_id=\"0x%04x\" component_tag=\"%u\""
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" selector_byte=\"%s\" selector_byte_txt=\"%s\" lang=\"%3.3s\""
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" text=\"%s\"/>",
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desc64_get_broadcast_id(p_desc),
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desc64_get_component_tag(p_desc),
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psz_selector_byte,
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psz_selector_byte_txt,
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(char *)desc64_get_lang(p_desc),
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psz_text);
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break;
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default:
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pf_print(print_opaque,
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" - desc 64 data_broadcast broadcast_id=0x%04x component_tag=%u"
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" selector_byte=\"%s\" selector_byte_txt=\"%s\" lang=%3.3s"
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" text=\"%s\"",
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desc64_get_broadcast_id(p_desc),
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desc64_get_component_tag(p_desc),
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psz_selector_byte,
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psz_selector_byte_txt,
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(char *)desc64_get_lang(p_desc),
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psz_text);
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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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