wm_cdtext.h

#ifndef WM_CDTEXT_H
#define WM_CDTEXT_H
 
/*
 * This file is part of WorkMan, the civilized CD player library
 * Copyright (C) Alexander Kern <alex.kern@gmx.de>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *
 * cdtext base structure and defines
 */
 
#define MAX_LENGHT_OF_CDTEXT_STRING 162 /* max 160 bytes + 2 * 0x00 by UNICODES */
#define DATAFIELD_LENGHT_IN_PACK 12
#define MAX_LANGUAGE_BLOCKS 8
 
struct cdtext_pack_data_header {
  unsigned char header_field_id1_typ_of_pack;
  unsigned char header_field_id2_tracknumber;
  unsigned char header_field_id3_sequence;
  unsigned char header_field_id4_block_no;
  unsigned char text_data_field[DATAFIELD_LENGHT_IN_PACK];
  unsigned char crc_byte1;
  unsigned char crc_byte2;
};
 
typedef unsigned char cdtext_string[MAX_LENGHT_OF_CDTEXT_STRING];
 
/* meke it more generic
   it can be up to 8 blocks with different encoding */
 
struct cdtext_info_block {
  /* management */
  unsigned char block_code;
  unsigned char block_unicode; /* 0 - single chars, 1 - doublebytes */
  unsigned char block_encoding; /* orange book -? */
  cdtext_string* block_encoding_text;
 
  /* variable part of cdtext */
  cdtext_string* name;
  cdtext_string* performer;
  cdtext_string* songwriter;
  cdtext_string* composer;
  cdtext_string* arranger;
  cdtext_string* message;
  cdtext_string* UPC_EAN_ISRC_code;
 
  /* fix part of cdtext */
  unsigned char binary_disc_identification_info[DATAFIELD_LENGHT_IN_PACK];
  unsigned char binary_genreidentification_info[DATAFIELD_LENGHT_IN_PACK];
  unsigned char binary_size_information[DATAFIELD_LENGHT_IN_PACK];
};
 
struct cdtext_info {
  /* sometimes i get hundreds of bytes, without anyone valid pack
     my CDU-561 for example */
  int count_of_entries; /* one more because album need one too */
  int count_of_valid_packs;
  int count_of_invalid_packs;
  int valid;
 
  struct cdtext_info_block *blocks[MAX_LANGUAGE_BLOCKS];
};
 
#ifndef IGNORE_FEATURE_LIST
 
struct feature_list_header {
  unsigned char lenght_msb;
  unsigned char lenght_1sb;
  unsigned char lenght_2sb;
  unsigned char lenght_lsb;
  unsigned char reserved1;
  unsigned char reserved2;
  unsigned char profile_msb;
  unsigned char profile_lsb;
};
 
struct feature_descriptor_cdread {
  unsigned char feature_code_msb;
  unsigned char feature_code_lsb;
  unsigned char settings;
  unsigned char add_lenght;
  unsigned char add_settings;
  unsigned char reserved1;
  unsigned char reserved2;
  unsigned char reserved3;
};
 
#endif /* IGNORE_FEATURE_LIST */
 
struct cdtext_info* wm_cd_get_cdtext(void *p);
 
#endif /* WM_CDTEXT_H */