/*    char            ??? */    uint8_t         i_spec_ver;                 /* 1 byte */    uint32_t        i_cat;                      /* 4 bytes */    uint16_t        i_volume_nb;                   /* 2 bytes */    uint16_t        i_volume;                      /* 2 bytes */    uint8_t         i_disc_side;                /* 1 bytes *//*    char[20]        ??? */    uint16_t        i_title_set_nb;                   /* 2 bytes */    byte_t          ps_provider_id[32];         /* 32 bytes */    uint64_t        i_pos_code;                 /* 8 bytes *//*    char[24]        ??? */    uint32_t        i_vmg_inf_end_byte;              /* 4 bytes */    uint32_t        i_first_play_title_start_byte;             /* 4 bytes *//*    char[56]        ??? */    uint32_t        i_vob_start_sector;             /* 4 bytes */    uint32_t        i_title_inf_start_sector;         /* 4 bytes */    uint32_t        i_title_unit_start_sector;          /* 4 bytes */    uint32_t        i_parental_inf_start_sector;         /* 4 bytes */    uint32_t        i_vts_inf_start_sector;         /* 4 bytes */    uint32_t        i_text_data_start_sector;         /* 4 bytes */    uint32_t        i_cell_inf_start_sector;            /* 4 bytes */    uint32_t        i_vobu_map_start_sector;       /* 4 bytes *//*    char[2]         ??? */    ifo_video_t     video_attr;                 /* 2 bytes *//*    char            ??? */    uint8_t         i_audio_nb;                 /* 1 byte */    ifo_audio_t     p_audio_attr[8];            /* i_vmgm_audio_nb * 8 bytes *//*    char[16]        ??? */    uint8_t         i_spu_nb;                /* 1 byte */    ifo_spu_t       p_spu_attr[32];          /* i_subpic_nb * 6 bytes */} manager_inf_t;/* * Part Of Title Search Pointer Table Information *//* Title sets structure * we have a pointer to this structure for each tts */typedef struct title_attr_s{    uint8_t         i_play_type;                /* 1 byte */    uint8_t         i_angle_nb;                 /* 1 byte */    uint16_t        i_chapter_nb;                  /* 2 bytes; Chapters/PGs */    uint16_t        i_parental_id;              /* 2 bytes */    uint8_t         i_title_set_num;            /* 1 byte (VTS#) */    uint8_t         i_title_num;                 /* 1 byte ??? */    uint32_t        i_start_sector;              /* 4 bytes */} title_attr_t;/* Main struct for tts * - start at "i_vmg_ptt_srpt_ssector" */typedef struct title_inf_s{    uint16_t        i_title_nb;                   /* 2 bytes *//*    char[2]         ??? */    uint32_t        i_last_byte;                   /* 4 bytes */    title_attr_t *  p_attr;                     /* i_ttu_nb * 12 bytes */} title_inf_t;/* * Parental Management Information Table */typedef struct parental_desc_s{    byte_t          ps_country_code[2];         /* 2 bytes *//*    char[2]         ??? */    uint16_t        i_parental_mask_start_byte;            /* 2 bytes *//*    char[2]         ??? */} parental_desc_t;typedef struct parental_mask_s{    uint16_t *      ppi_mask[8];            /* (i_vts_nb +1) * 8 * 2 bytes */} parental_mask_t;/* Main struct for parental management * - start at i_vmg_ptl_mait_ssector */typedef struct parental_inf_s{    uint16_t        i_country_nb;               /* 2 bytes */    uint16_t        i_vts_nb;                   /* 2 bytes */    uint32_t        i_last_byte;                   /* 4 bytes */    parental_desc_t* p_parental_desc;             /* i_country_nb * 8 bytes */    parental_mask_t* p_parental_mask;        /* i_country_nb * sizeof(vmg_ptl_mask_t) */} parental_inf_t;/* * Video Title Set Attribute Table *//* Attribute structure : one for each vts * - start at pi_atrt_sbyte */typedef struct vts_attr_s{    uint32_t        i_last_byte;                   /* 4 bytes */    uint32_t        i_cat_app_type;             /* 4 bytes */    ifo_video_t     vts_menu_video_attr;          /* 2 bytes *//*    char            ??? */    uint8_t         i_vts_menu_audio_nb;            /* 1 byte */    ifo_audio_t     p_vts_menu_audio_attr[8];       /* 8 * 8 bytes *//*    char[17]        ??? */    uint8_t         i_vts_menu_spu_nb;           /* 1 byte */    ifo_spu_t       p_vts_menu_spu_attr[28];     /* i_vtsm_subpic_nb * 6 bytes *//*    char[2]         ??? */    ifo_video_t     vts_title_video_attr;         /* 2 bytes *//*    char            ??? */    uint8_t         i_vts_title_audio_nb;           /* 1 byte */    ifo_audio_t     p_vts_title_audio_attr[8];      /* 8 * 8 bytes *//*    char[17]        ??? */    uint8_t         i_vts_title_spu_nb;          /* 1 byte */    ifo_spu_t       p_vts_title_spu_attr[28];    /* i_vtstt_subpic_nb * 6 bytes */} vts_attr_t;/* Main struct for vts attributes * - start at i_vmg_vts_atrt_ssector */typedef struct vts_inf_s{    uint16_t        i_vts_nb;                   /* 2 bytes *//*    char[2]         ??? */    uint32_t        i_last_byte;                   /* 4 bytes */    uint32_t *      pi_vts_attr_start_byte;          /* i_vts_nb * 4 bytes */    vts_attr_t*     p_vts_attr;} vts_inf_t;/* * Global Structure for Video Manager */typedef struct vmg_s{    manager_inf_t       manager_inf;    title_t             title;    title_inf_t         title_inf;    title_unit_t        title_unit;    parental_inf_t      parental_inf;    vts_inf_t           vts_inf;    cell_inf_t          cell_inf;    vobu_map_t          vobu_map;} vmg_t;/***************************************************************************** * Structures for Video Title Sets (cf vts_*.ifo) ****************************************************************************//* * Video Title Sets Information Management Table */typedef struct vts_manager_s{    byte_t          psz_id[13];                 /* 12 bytes (DVDVIDEO-VTS) */    uint32_t        i_last_sector;              /* 4 bytes *//*    char[12]        ??? */    uint32_t        i_inf_last_sector;          /* 4 bytes *//*    char            ??? */    uint8_t         i_spec_ver;                 /* 1 byte */    uint32_t        i_cat;                      /* 4 bytes *//*    char[90]        ??? */    uint32_t        i_inf_end_byte;                /* 4 bytes *//*    char[60]        ??? */    uint32_t        i_menu_vob_start_sector;           /* 4 bytes */    uint32_t        i_title_vob_start_sector;          /* 4 bytes */    uint32_t        i_title_inf_start_sector;         /* 4 bytes */    uint32_t        i_title_unit_start_sector;            /* 4 bytes */    uint32_t        i_menu_unit_start_sector;        /* 4 bytes */    uint32_t        i_time_inf_start_sector;          /* 4 bytes */    uint32_t        i_menu_cell_inf_start_sector;          /* 4 bytes */    uint32_t        i_menu_vobu_map_start_sector;     /* 4 bytes */    uint32_t        i_cell_inf_start_sector;            /* 4 bytes */    uint32_t        i_vobu_map_start_sector;       /* 4 bytes *//*    char[24]        ??? */    ifo_video_t     menu_video_attr;               /* 2 bytes *//*    char            ??? */    uint8_t         i_menu_audio_nb;               /* 1 byte */    ifo_audio_t     p_menu_audio_attr[8];          /* i_vmgm_audio_nb * 8 bytes *//*    char[16]        ??? */    uint8_t         i_menu_spu_nb;              /* 1 byte */    ifo_spu_t       p_menu_spu_attr[32];        /* i_subpic_nb * 6 bytes */                                                /* !!! only 28 subpics ??? *//*    char[2]         ??? */    ifo_video_t     video_attr;                 /* 2 bytes *//*    char            ??? */    uint8_t         i_audio_nb;                 /* 1 byte */    ifo_audio_t     p_audio_attr[8];            /* i_vmgm_audio_nb * 8 bytes *//*    char[16]        ??? */    uint8_t         i_spu_nb;                /* 1 byte */    ifo_spu_t       p_spu_attr[32];          /* i_subpic_nb * 6 bytes */} vts_manager_t;/* * Part Of Title Search Pointer Table Information *//* Title sets structure * we have a pointer to this structure for each tts */typedef struct title_start_s{    uint16_t        i_title_id;         /* 2 bytes; Chapters/PGs */    uint16_t        i_chapter;                   /* 2 bytes */} title_start_t;/* Main struct for tts * - start at "i_vts_ptt_srpt_ssector" */typedef struct vts_title_s{    uint16_t        i_title_nb;                   /* 2 bytes *//*    char[2]         ??? */    uint32_t        i_last_byte;                   /* 4 bytes */    uint32_t *      pi_start_byte;    title_start_t * p_title_start;                      /* i_ttu_nb * 4 bytes */} vts_title_t;/* * Time Map table information *//* Time Map structure */typedef struct time_map_s{    uint8_t         i_time_unit;                /* 1 byte *//*    char            ??? */    uint16_t        i_entry_nb;                 /* 2 bytes */    uint32_t *      pi_sector;                  /* i_entry_nb * 4 bytes */} time_map_t;/* Main structure for tmap_ti * - start at "i_tmap_ti_ssector" */typedef struct time_inf_s{    uint16_t        i_nb;                       /* 2 bytes *//*    char[2]         ??? */    uint32_t        i_last_byte;                   /* 4 bytes */    uint32_t *      pi_start_byte;                   /* i_tmap_nb * 4 bytes */    time_map_t*     p_time_map;} time_inf_t;/* * Video Title Set */typedef struct vts_s{    vlc_bool_t      b_initialized;    int             i_pos;    vts_manager_t   manager_inf;    vts_title_t     title_inf;    title_unit_t    menu_unit;    unit_inf_t      title_unit;    time_inf_t      time_inf;    cell_inf_t      menu_cell_inf;    vobu_map_t      menu_vobu_map;    cell_inf_t      cell_inf;    vobu_map_t      vobu_map;} vts_t;/* *  Global Ifo Structure */typedef struct ifo_s{    dvdcss_handle   dvdhandle;      /* File descriptor for the device */    int             i_start;        /* Offset to video_ts.ifo on the device */    int             i_pos;          /* Position of stream pointer */    vlc_bool_t      b_error;        /* Error Management */    vmg_t           vmg;            /* Structure described in video_ts */    vts_t           vts;            /* Vts ifo for current title set */    /* Remap buffer for unaligned reads */    uint8_t         p_remap[ 2 * DVD_LB_SIZE ];} ifo_t;/***************************************************************************** * Prototypes in dvd_ifo.c *****************************************************************************/struct thread_dvd_data_s;int   IfoCreate   ( struct thread_dvd_data_s * );int   IfoInit     ( struct ifo_s * );int   IfoTitleSet ( struct ifo_s *, int );void  IfoDestroy  ( struct ifo_s * );