hvirtual/libmpeg3/ifo.h

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#ifndef __IFO_H__
#define __IFO_H__

#ifndef DVD_VIDEO_LB_LEN
#define DVD_VIDEO_LB_LEN 2048
#endif

#define OFFSET_IFO              0x0000
#define OFFSET_VTS              0x0000
#define OFFSET_LEN              0x00C0
#define IFO_OFFSET_TAT          0x00C0
#define OFFSET_VTSI_MAT         0x0080
#define IFO_OFFSET_VIDEO        0x0100
#define IFO_OFFSET_AUDIO        0x0200
#define IFO_OFFSET_SUBPIC       0x0250


// for debug and error output

typedef struct {
#if BYTE_ORDER == BIG_ENDIAN
        u_char compression      : 2;
        u_char system           : 2;
        u_char ratio            : 2;
        u_char perm_displ       : 2;

        u_char line21_1         : 1;
        u_char line21_2         : 1;
        u_char source_res       : 2;
        u_char letterboxed      : 1;
        u_char mode             : 1;
#else
        u_char perm_displ       : 2;
        u_char ratio            : 2;
        u_char system           : 2;
        u_char compression      : 2;

        u_char mode             : 1;
        u_char letterboxed      : 1;
        u_char source_res       : 2;
        u_char line21_2         : 1;
        u_char line21_1         : 1;
#endif
} ifo_video_info_t;

typedef struct {
#if MPEG3_LITTLE_ENDIAN
        u_char num_channels     : 3;    // number of channels (n+1)
        u_char sample_freq      : 2;    // sampling frequency
        u_char quantization     : 2;    // quantization
        u_char appl_mode2       : 1;    // audio application mode

        u_char appl_mode1       : 1;    // 
        u_char type             : 2;    // audio type (language included?)
        u_char multichannel_extension: 1;
        u_char coding_mode      : 2;
#else
        u_char appl_mode2       : 1;
        u_char quantization     : 2;
        u_char sample_freq      : 2;
        u_char num_channels     : 3;

        u_char coding_mode      : 2;
        u_char multichannel_extension: 1;
        u_char type             : 2;
        u_char appl_mode1       : 1;
#endif
        u_short lang_code       : 16;   // <char> description
        u_int   foo             : 8;    // 0x00000000 ?
        u_int   caption         : 8;
        u_int   bar             : 8;    // 0x00000000 ?
} ifo_audio_t;

#define IFO_AUDIO_LEN 7

typedef struct {
        u_short prefix  : 16;           // 0x0100 ?
        u_short lang_code : 16;         // <char> description
        u_char foo      : 8;            // dont know
        u_char caption  : 8;            // 0x00 ?
} ifo_spu_t;


#if 0
typedef struct {
        u_char  tu              : 16;    // time unit (in seconds)
        u_int                   : 16;   // don't know
} ifo_tmt_hdr_t;
#endif

typedef struct {
        u_int                   : 24;   // don't know
        u_char  tu              : 8;    // time unit (in seconds)
} ifoq_tmt_hdr_t;

//#define IFO_TMT_HDR_LEN 4
#define IFOQ_TMT_HDR_LEN 1


typedef struct {
        u_short vob_id          : 16;   // Video Object Identifier
        u_char  cell_id         : 8;    // Cell Identifier
        u_char                  : 8;    // don't know
        u_int   start           : 32;   // Cell start
        u_int   end             : 32;   // Cell end
} ifo_cell_addr_t;


typedef struct {
        u_short vob_id          : 16;   // Video Object Identifier
        u_short cell_id         : 16;   // Cell Identifier
} ifo_pgc_cell_pos_t;

typedef struct {
        u_short pgc;            // Program Chain (PTT)
        u_short pg;             // Program (PTT)
        u_long  start;          // Start of VOBU (VTS? CADDR)
        u_long  end;            // End of VOBU (VTS? CADDR)
} ifo_ptt_data_t;

typedef struct {
        u_int num;              // Number of Chapters
        ifo_ptt_data_t *data;   // Data
} ifo_ptt_sub_t;

typedef struct {
        u_int num;              // Number of Titles
        ifo_ptt_sub_t *title;   // Titles
} ifo_ptt_t;

typedef struct {
        u_char  chain_info      : 8; // 0x5e 0xde(2 angles, no overlay), 0x5f 0x9f 0x9f 0xdf(4 angles overlay), 0x2 0xa 0x8(1 angle)
        u_char  foo             : 8; // parent control ??
        u_char  still_time      : 8;
        u_char  cell_cmd        : 8;
        //u_int   foo             : 32;
        u_int   len_time        : 32;
        u_int   vobu_start      : 32;   // 1st vobu start
        u_int   ilvu_end        : 32;
        u_int   vobu_last_start : 32;
        u_int   vobu_last_end   : 32;
} ifo_pgci_cell_addr_t;

#define PGCI_CELL_ADDR_LEN 24

#define ID_NUM_MENU_VOBS 0
#define ID_NUM_TITLE_VOBS 1

#define ID_MAT                  0
#define ID_PTT                  1
#define ID_TSP                  1
#define ID_TITLE_PGCI           2
#define ID_MENU_PGCI            3
#define ID_TMT                  4
#define ID_MENU_CELL_ADDR       5
#define ID_MENU_VOBU_ADDR_MAP   6
#define ID_TITLE_CELL_ADDR      7
#define ID_TITLE_VOBU_ADDR_MAP  8


typedef struct {
        u_int num_menu_vobs;
        u_int vob_start;

        u_char *data[10];
        
        int fd;         // file descriptor
        __off64_t pos;  // offset of ifo file on device 
} ifo_t;


#define IFO_HDR_LEN 8
#define IFOQ_HDR_LEN 2

typedef struct {
        u_short num     : 16;   // number of entries
        u_short         : 16;   // don't known (reserved?)
        u_int   len     : 32;   // length of table
} ifo_hdr_t;

typedef struct {
        u_short         : 16;   // don't known (reserved?)
        u_short num     : 16;   // number of entries
        u_int   len     : 32;   // length of table
} ifoq_hdr_t;


ifo_t *ifoOpen (int fd, __off64_t pos);
int ifoClose (ifo_t *ifo);

u_int ifoGetVOBStart    (ifo_t *ifo);
int ifoGetNumberOfTitles (ifo_t *ifo);
int ifoGetNumberOfParts (ifo_t *ifo);

int ifoGetVMGPTT        (ifo_hdr_t *hdr, char **ptr);
int ifoGetPGCI          (ifo_hdr_t *hdr, int title, char **ptr);
int ifoGetCLUT          (char *pgc, char **ptr);
u_int ifoGetCellPlayInfo        (u_char *pgc, u_char **ptr);
u_int ifoGetCellPos     (u_char *pgc, u_char **ptr);
int ifoGetProgramMap    (char *pgc, char **ptr);
int ifoGetCellAddr      (char *cell_addr, char **ptr);
int ifoGetCellAddrNum   (char *hdr);

int ifoGetAudio         (char *hdr, char **ptr);
int ifoGetSPU           (char *hdr, char **ptr);

ifo_ptt_t *ifo_get_ptt (ifo_t *ifo);
int ifo_get_num_title_pgci (ifo_t *ifo);
u_char *ifo_get_ptr_title_pgci (ifo_t *ifo, int index);

char *ifoDecodeLang (u_short descr);

int ifoIsVTS (ifo_t *ifo);
int ifoIsVMG (ifo_t *ifo);

void ifoPrintVideo              (u_char *ptr);

void ifoPrintCellPlayInfo       (u_char *ptr, u_int num);
void ifoPrintCellInfo           (u_char *ptr, u_int num);
void ifoPrintCellPos            (u_char *ptr, u_int num);
void ifoPrintCLUT               (u_char *ptr); 
void ifoPrintProgramMap         (u_char *ptr, u_int num);

#ifdef PARSER
void ifoPrintAudio              (ifo_audio_t *ptr, u_int num);
void ifoPrintSPU                (ifo_spu_t *ptr, u_int num);
void ifoPrintTMT                (ifo_t *ifo);

void ifoPrintVMOP               (u_char *opcode);

void ifoPrint_ptt (ifo_ptt_t *ptt);
void ifoPrint_vts_vobu_addr_map (ifo_t *ifo);
void ifoPrint_vtsm_vobu_addr_map (ifo_t *ifo);
void ifoPrint_vts_cell_addr (ifo_t *ifo);
void ifoPrint_vtsm_cell_addr (ifo_t *ifo);
void ifoPrint_title_pgci (ifo_t *ifo);
void ifoPrint_pgc_cmd (u_char *pgc_ptr);
void ifoPrintTSP (u_char *toast);
void ifoPrint_pgc (u_char *ptr);
#endif
#endif

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