/***************************************************************************** * desc_64.h: ETSI EN 300 468 Descriptor 0x64: Data broadcast descriptor ***************************************************************************** * Copyright (C) 2011 Unix Solutions Ltd. * * Authors: Georgi Chorbadzhiyski * * 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_64_H__ #define __BITSTREAM_DVB_DESC_64_H__ #include #include #include #ifdef __cplusplus extern "C" { #endif /***************************************************************************** * Descriptor 0x64: Data broadcast descriptor *****************************************************************************/ #define DESC64_HEADER_SIZE (DESC_HEADER_SIZE + 8) static inline void desc64_init(uint8_t *p_desc) { desc_set_tag(p_desc, 0x64); desc_set_length(p_desc, DESC64_HEADER_SIZE - DESC_HEADER_SIZE); } static inline uint16_t desc64_get_broadcast_id(const uint8_t *p_desc) { return (p_desc[2] << 8) | p_desc[3]; } static inline void desc64_set_broadcast_id(uint8_t *p_desc, uint16_t i_broadcast_id) { p_desc[2] = (i_broadcast_id >> 8) & 0xff; p_desc[3] = i_broadcast_id & 0xff; } static inline uint8_t desc64_get_component_tag(const uint8_t *p_desc) { return p_desc[4]; } static inline void desc64_set_component_tag(uint8_t *p_desc, uint8_t i_component_tag) { p_desc[4] = i_component_tag; } static inline uint8_t desc64_get_selector_byte_length(const uint8_t *p_desc) { return p_desc[5]; } static inline const uint8_t *desc64_get_selector_byte(const uint8_t *p_desc, uint8_t *pi_length) { *pi_length = desc64_get_selector_byte_length(p_desc); return p_desc + 6; } static inline void desc64_set_selector_byte(uint8_t *p_desc, const uint8_t *p_selector_byte, uint8_t i_length) { p_desc[5] = i_length; memcpy(p_desc + 6, p_selector_byte, i_length); } static inline const uint8_t *desc64_get_lang(const uint8_t *p_desc) { return p_desc + 6 + desc64_get_selector_byte_length(p_desc); } static inline void desc64_set_lang(uint8_t *p_desc, const uint8_t p_lang[3]) { uint8_t *p = p_desc + 6 + desc64_get_selector_byte_length(p_desc); p[0] = p_lang[0]; p[1] = p_lang[1]; p[2] = p_lang[2]; } static inline uint8_t desc64_get_text_length(const uint8_t *p_desc) { return p_desc[6 + desc64_get_selector_byte_length(p_desc) + 3]; } static inline const uint8_t *desc64_get_text(const uint8_t *p_desc, uint8_t *pi_length) { *pi_length = desc64_get_text_length(p_desc); return p_desc + 6 + desc64_get_selector_byte_length(p_desc) + 3 + 1; } static inline void desc64_set_text(uint8_t *p_desc, const uint8_t *p_text, uint8_t i_length) { uint8_t *p = p_desc + 6 + desc64_get_selector_byte_length(p_desc) + 3; p[0] = i_length; memcpy(p + 1, p_text, i_length); } static inline void desc64_set_length(uint8_t *p_desc) { desc_set_length(p_desc, DESC64_HEADER_SIZE - DESC_HEADER_SIZE + desc64_get_selector_byte_length(p_desc) + desc64_get_text_length(p_desc)); } static inline bool desc64_validate(const uint8_t *p_desc) { int i_length = desc_get_length(p_desc) - (DESC64_HEADER_SIZE - DESC_HEADER_SIZE); i_length -= desc64_get_selector_byte_length(p_desc); i_length -= desc64_get_text_length(p_desc); return i_length == 0; } static inline void desc64_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_selector_byte_length, i_text_length, i; const uint8_t *p_selector_byte = desc64_get_selector_byte(p_desc, &i_selector_byte_length); const uint8_t *p_text = desc64_get_text(p_desc, &i_text_length); char *psz_text = dvb_string_get(p_text, i_text_length, pf_iconv, iconv_opaque); char psz_selector_byte[2 * 255 + 1]; char psz_selector_byte_txt[255 + 1]; for (i = 0; i < i_selector_byte_length; i++) { sprintf(psz_selector_byte + 2 * i, "%02x", p_selector_byte[i]); if (p_selector_byte[i] >= 32 && p_selector_byte[i] <= 127 && p_selector_byte[i] != '"') psz_selector_byte_txt[i] = p_selector_byte[i]; else psz_selector_byte_txt[i] = '.'; } psz_selector_byte[2 * i] = '\0'; psz_selector_byte_txt[i] = '\0'; switch (i_print_type) { case PRINT_XML: psz_text = dvb_string_xml_escape(psz_text); pf_print(print_opaque, "", desc64_get_broadcast_id(p_desc), desc64_get_component_tag(p_desc), psz_selector_byte, psz_selector_byte_txt, (char *)desc64_get_lang(p_desc), psz_text); break; default: pf_print(print_opaque, " - desc 64 data_broadcast broadcast_id=0x%04x component_tag=%u" " selector_byte=\"%s\" selector_byte_txt=\"%s\" lang=%3.3s" " text=\"%s\"", desc64_get_broadcast_id(p_desc), desc64_get_component_tag(p_desc), psz_selector_byte, psz_selector_byte_txt, (char *)desc64_get_lang(p_desc), psz_text); } free(psz_text); } #ifdef __cplusplus } #endif #endif