/***************************************************************************** * desc_26.h: ISO/IEC 13818-1 Descriptor 0x26 (Metadata 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: * - ISO/IEC 13818-1:2007(E) (MPEG-2 Systems) */ #ifndef __BITSTREAM_MPEG_DESC_26_H__ #define __BITSTREAM_MPEG_DESC_26_H__ #include #include #include #ifdef __cplusplus extern "C" { #endif /***************************************************************************** * Descriptor 0x26 (Metadata descriptor) *****************************************************************************/ #define DESC26_HEADER_SIZE (DESC_HEADER_SIZE + 5) static inline void desc26_init(uint8_t *p_desc) { desc_set_tag(p_desc, 0x26); } #define desc26_get_metadata_application_format desc25_get_metadata_application_format #define desc26_set_metadata_application_format desc25_set_metadata_application_format #define desc26_get_metadata_application_format_identifier desc25_get_metadata_application_format_identifier #define desc26_set_metadata_application_format_identifier desc25_set_metadata_application_format_identifier #define __ofs1 \ (4 + (desc26_get_metadata_application_format(p_desc) == 0xffff ? 4 : 0)) #define desc26_get_metadata_format desc25_get_metadata_format #define desc26_set_metadata_format desc25_set_metadata_format #define desc26_get_metadata_format_identifier desc25_get_metadata_format_identifier #define desc26_set_metadata_format_identifier desc25_set_metadata_format_identifier #define __ofs2 \ (__ofs1 + 1 + (desc26_get_metadata_format(p_desc) == 0xff ? 4 : 0)) #define desc26_get_metadata_service_id desc25_get_metadata_service_id #define desc26_set_metadata_service_id desc25_set_metadata_service_id static inline uint8_t desc26_get_decoder_config_flags(const uint8_t *p_desc) { return (p_desc[__ofs2 + 1] & 0xe0) >> 5; } static inline void desc26_set_decoder_config_flags(uint8_t *p_desc, uint8_t i_flags) { uint8_t ofs = __ofs2; p_desc[ofs + 1] = ((i_flags & 0x07) << 5) | (p_desc[ofs + 1] & 0x1f) | 0x0f; } static inline bool desc26_get_dsm_cc_flag(const uint8_t *p_desc) { return (p_desc[__ofs2 + 1] & 0x10) == 0x10; } static inline void desc26_set_dsm_cc_flag(uint8_t *p_desc, bool b_flag) { uint8_t ofs = __ofs2; p_desc[ofs + 1] = (b_flag ? (p_desc[ofs + 1] | 0x10) : (p_desc[ofs + 1] &~ 0x10)) | 0x0f; } static inline uint8_t desc26_get_service_identification_record_length(const uint8_t *p_desc) { return desc26_get_dsm_cc_flag(p_desc) ? p_desc[__ofs2 + 2] : 0; } static inline const uint8_t *desc26_get_service_identification_record_data(const uint8_t *p_desc) { return desc26_get_dsm_cc_flag(p_desc) ? p_desc + __ofs2 + 3 : NULL; } static inline const uint8_t *desc26_get_service_identification_record(const uint8_t *p_desc, uint8_t *i_length) { *i_length = desc26_get_service_identification_record_length(p_desc); return desc26_get_service_identification_record_data(p_desc); } static inline void desc26_set_service_identification_record(uint8_t *p_desc, uint8_t i_length, uint8_t *p_data) { if (desc26_get_dsm_cc_flag(p_desc)) { uint8_t ofs = __ofs2; p_desc[ofs + 2] = i_length; memcpy(p_desc + ofs + 3, p_data, i_length); } } #define __ofs3 \ (__ofs2 + 1 + \ (desc26_get_dsm_cc_flag(p_desc) \ ? 1 + desc26_get_service_identification_record_length(p_desc) \ : 0 \ ) + 1 \ ) static inline uint8_t desc26_get_decoder_config_length(const uint8_t *p_desc) { return (desc26_get_decoder_config_flags(p_desc) == 1) ? p_desc[__ofs3] : 0; } static inline const uint8_t *desc26_get_decoder_config_data(const uint8_t *p_desc) { return (desc26_get_decoder_config_flags(p_desc) == 1) ? p_desc + __ofs3 + 1 : NULL; } static inline const uint8_t *desc26_get_decoder_config(const uint8_t *p_desc, uint8_t *i_length) { *i_length = desc26_get_decoder_config_length(p_desc); return desc26_get_decoder_config_data(p_desc); } static inline void desc26_set_decoder_config(uint8_t *p_desc, uint8_t i_length, uint8_t *p_data) { if (desc26_get_decoder_config_flags(p_desc) == 1) { uint8_t ofs = __ofs3; p_desc[ofs] = i_length; memcpy(p_desc + ofs + 1, p_data, i_length); } } static inline uint8_t desc26_get_dec_config_identification_record_length(const uint8_t *p_desc) { return (desc26_get_decoder_config_flags(p_desc) == 3) ? p_desc[__ofs3] : 0; } static inline const uint8_t *desc26_get_dec_config_identification_record_data(const uint8_t *p_desc) { return (desc26_get_decoder_config_flags(p_desc) == 3) ? p_desc + __ofs3 + 1 : NULL; } static inline const uint8_t *desc26_get_dec_config_identification_record(const uint8_t *p_desc, uint8_t *i_length) { *i_length = desc26_get_dec_config_identification_record_length(p_desc); return desc26_get_dec_config_identification_record_data(p_desc); } static inline void desc26_set_dec_config_identification_record(uint8_t *p_desc, uint8_t i_length, uint8_t *p_data) { if (desc26_get_decoder_config_flags(p_desc) == 3) { uint8_t ofs = __ofs3; p_desc[ofs] = i_length; memcpy(p_desc + ofs + 1, p_data, i_length); } } static inline uint8_t desc26_get_decoder_config_metadata_service_id(const uint8_t *p_desc) { if (desc26_get_decoder_config_flags(p_desc) == 4) return p_desc[__ofs3]; else return 0; } static inline void desc26_set_decoder_config_metadata_service_id(uint8_t *p_desc, uint8_t i_service) { if (desc26_get_decoder_config_flags(p_desc) == 4) p_desc[__ofs3] = i_service; } #undef __ofs1 #undef __ofs2 #undef __ofs3 static inline int desc26_calc_length(const uint8_t *p_desc) { int i_length = DESC26_HEADER_SIZE - DESC_HEADER_SIZE; uint8_t i_flags = desc26_get_decoder_config_flags(p_desc); if (desc26_get_metadata_application_format(p_desc) == 0xffff) i_length += 4; if (desc26_get_metadata_format(p_desc) == 0xff) i_length += 4; if (desc26_get_dsm_cc_flag(p_desc)) i_length += 1 + desc26_get_service_identification_record_length(p_desc); if (i_flags == 1) i_length += 1 + desc26_get_decoder_config_length(p_desc); if (i_flags == 3) i_length += 1 + desc26_get_dec_config_identification_record_length(p_desc); if (i_flags == 4) i_length += 1; return i_length; } static inline bool desc26_validate(const uint8_t *p_desc) { return desc26_calc_length(p_desc) <= desc_get_length(p_desc); } static inline void desc26_set_length(uint8_t *p_desc) { desc_set_length(p_desc, desc26_calc_length(p_desc)); } static inline void desc26_print(const uint8_t *p_desc, f_print pf_print, void *opaque, print_type_t i_print_type) { uint8_t i, i_service_identification_record_length; const uint8_t *p_service_identification_record = desc26_get_service_identification_record(p_desc, &i_service_identification_record_length); char psz_service_identification_record[2 * 256 + 1]; const char *extra_str = "decoder_config"; const uint8_t *p_extra = NULL; uint8_t i_extra_length = 0; char psz_extra[2 * 256 + 1]; for (i = 0; i < i_service_identification_record_length; i++) sprintf(psz_service_identification_record + 2 * i, "%02x", p_service_identification_record[i]); psz_service_identification_record[2 * i] = '\0'; if (desc26_get_decoder_config_flags(p_desc) == 1) { p_extra = desc26_get_decoder_config(p_desc, &i_extra_length); } if (desc26_get_decoder_config_flags(p_desc) == 3) { extra_str = "dec_config_identification_record"; p_extra = desc26_get_dec_config_identification_record(p_desc, &i_extra_length); } for (i = 0; i < i_extra_length; i++) sprintf(psz_extra + 2 * i, "%02x", p_extra[i]); psz_extra[2 * i] = '\0'; switch (i_print_type) { case PRINT_XML: pf_print(opaque, "", desc26_get_metadata_application_format(p_desc), desc26_get_metadata_application_format_identifier(p_desc), desc26_get_metadata_format(p_desc), desc26_get_metadata_format_identifier(p_desc), desc26_get_metadata_service_id(p_desc), desc26_get_dsm_cc_flag(p_desc), desc26_get_service_identification_record_length(p_desc), psz_service_identification_record, desc26_get_decoder_config_flags(p_desc), extra_str, i_extra_length, extra_str, psz_extra, desc26_get_decoder_config_metadata_service_id(p_desc) ); break; default: pf_print(opaque, " - desc 26 metadata metadata_application_format=0x%04x" " metadata_application_format_identifier=0x%08x" " metadata_format=0x%02x" " metadata_format_identifier=0x%08x" " metadata_service_id=0x%02x" " dsm_cc_flag=%u" " service_identification_record_length=%u" " service_identification_record=\"%s\"" " decoder_config_flags=%u" " %s_length=%u" " %s_data=\"%s\"" " decoder_config_metadata_service_id=%u", desc26_get_metadata_application_format(p_desc), desc26_get_metadata_application_format_identifier(p_desc), desc26_get_metadata_format(p_desc), desc26_get_metadata_format_identifier(p_desc), desc26_get_metadata_service_id(p_desc), desc26_get_dsm_cc_flag(p_desc), desc26_get_service_identification_record_length(p_desc), psz_service_identification_record, desc26_get_decoder_config_flags(p_desc), extra_str, i_extra_length, extra_str, psz_extra, desc26_get_decoder_config_metadata_service_id(p_desc) ); } } #ifdef __cplusplus } #endif #endif