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mpv/libmpdvdkit2/ifo_read.c

2019 lines
55 KiB
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/*
* Copyright (C) 2000, 2001, 2002, 2003
* Björn Englund <d4bjorn@dtek.chalmers.se>,
* Håkan Hjort <d95hjort@dtek.chalmers.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <string.h>
#include "bswap.h"
#include "ifo_types.h"
#include "ifo_read.h"
#include "dvd_reader.h"
#include "dvdread_internal.h"
#ifndef DVD_BLOCK_LEN
#define DVD_BLOCK_LEN 2048
#endif
#ifndef NDEBUG
#define CHECK_ZERO0(arg) \
if(arg != 0) { \
fprintf(stderr, "*** Zero check failed in %s:%i\n for %s = 0x%x\n", \
__FILE__, __LINE__, # arg, arg); \
}
#define CHECK_ZERO(arg) \
if(memcmp(my_friendly_zeros, &arg, sizeof(arg))) { \
unsigned int i_CZ; \
fprintf(stderr, "*** Zero check failed in %s:%i\n for %s = 0x", \
__FILE__, __LINE__, # arg ); \
for(i_CZ = 0; i_CZ < sizeof(arg); i_CZ++) \
fprintf(stderr, "%02x", *((uint8_t *)&arg + i_CZ)); \
fprintf(stderr, "\n"); \
}
static const uint8_t my_friendly_zeros[2048];
#else
#define CHECK_ZERO0(arg) (void)(arg)
#define CHECK_ZERO(arg) (void)(arg)
#endif
/* Prototypes for internal functions */
static int ifoRead_VMG(ifo_handle_t *ifofile);
static int ifoRead_VTS(ifo_handle_t *ifofile);
static int ifoRead_PGC(ifo_handle_t *ifofile, pgc_t *pgc, unsigned int offset);
static int ifoRead_PGC_COMMAND_TBL(ifo_handle_t *ifofile,
pgc_command_tbl_t *cmd_tbl,
unsigned int offset);
static int ifoRead_PGC_PROGRAM_MAP(ifo_handle_t *ifofile,
pgc_program_map_t *program_map,
unsigned int nr, unsigned int offset);
static int ifoRead_CELL_PLAYBACK_TBL(ifo_handle_t *ifofile,
cell_playback_t *cell_playback,
unsigned int nr, unsigned int offset);
static int ifoRead_CELL_POSITION_TBL(ifo_handle_t *ifofile,
cell_position_t *cell_position,
unsigned int nr, unsigned int offset);
static int ifoRead_VTS_ATTRIBUTES(ifo_handle_t *ifofile,
vts_attributes_t *vts_attributes,
unsigned int offset);
static int ifoRead_C_ADT_internal(ifo_handle_t *ifofile, c_adt_t *c_adt,
unsigned int sector);
static int ifoRead_VOBU_ADMAP_internal(ifo_handle_t *ifofile,
vobu_admap_t *vobu_admap,
unsigned int sector);
static int ifoRead_PGCIT_internal(ifo_handle_t *ifofile, pgcit_t *pgcit,
unsigned int offset);
static void ifoFree_PGC(pgc_t *pgc);
static void ifoFree_PGC_COMMAND_TBL(pgc_command_tbl_t *cmd_tbl);
static void ifoFree_PGCIT_internal(pgcit_t *pgcit);
static inline int DVDFileSeek_( dvd_file_t *dvd_file, uint32_t offset ) {
return (DVDFileSeek(dvd_file, (int)offset) == (int)offset);
}
ifo_handle_t *ifoOpen(dvd_reader_t *dvd, int title) {
ifo_handle_t *ifofile;
ifofile = malloc(sizeof(ifo_handle_t));
if(!ifofile)
return 0;
memset(ifofile, 0, sizeof(ifo_handle_t));
ifofile->file = DVDOpenFile(dvd, title, DVD_READ_INFO_FILE);
if(!ifofile->file) /* Should really catch any error and try to fallback */
ifofile->file = DVDOpenFile(dvd, title, DVD_READ_INFO_BACKUP_FILE);
if(!ifofile->file) {
if(title) {
fprintf(stderr, "libdvdread: Can't open file VTS_%02d_0.IFO.\n", title);
} else {
fprintf(stderr, "libdvdread: Can't open file VIDEO_TS.IFO.\n");
}
free(ifofile);
return 0;
}
/* First check if this is a VMGI file. */
if(ifoRead_VMG(ifofile)) {
/* These are both mandatory. */
if(!ifoRead_FP_PGC(ifofile) || !ifoRead_TT_SRPT(ifofile)) {
fprintf(stderr, "libdvdread: Invalid main menu IFO (VIDEO_TS.IFO).\n");
ifoClose(ifofile);
return 0;
}
ifoRead_PGCI_UT(ifofile);
ifoRead_PTL_MAIT(ifofile);
/* This is also mandatory. */
if(!ifoRead_VTS_ATRT(ifofile)) {
fprintf(stderr, "libdvdread: Invalid main menu IFO (VIDEO_TS.IFO).\n");
ifoClose(ifofile);
return 0;
}
ifoRead_TXTDT_MGI(ifofile);
ifoRead_C_ADT(ifofile);
ifoRead_VOBU_ADMAP(ifofile);
return ifofile;
}
if(ifoRead_VTS(ifofile)) {
if(!ifoRead_VTS_PTT_SRPT(ifofile) || !ifoRead_PGCIT(ifofile)) {
fprintf(stderr, "libdvdread: Invalid title IFO (VTS_%02d_0.IFO).\n",
title);
ifoClose(ifofile);
return 0;
}
ifoRead_PGCI_UT(ifofile);
ifoRead_VTS_TMAPT(ifofile);
ifoRead_C_ADT(ifofile);
ifoRead_VOBU_ADMAP(ifofile);
if(!ifoRead_TITLE_C_ADT(ifofile) || !ifoRead_TITLE_VOBU_ADMAP(ifofile)) {
fprintf(stderr, "libdvdread: Invalid title IFO (VTS_%02d_0.IFO).\n",
title);
ifoClose(ifofile);
return 0;
}
return ifofile;
}
if(title) {
fprintf(stderr, "libdvdread: Invalid IFO for title %d (VTS_%02d_0.IFO).\n",
title, title);
} else {
fprintf(stderr, "libdvdread: Invalid IFO for VMGM (VIDEO_TS.IFO).\n");
}
ifoClose(ifofile);
return 0;
}
ifo_handle_t *ifoOpenVMGI(dvd_reader_t *dvd) {
ifo_handle_t *ifofile;
ifofile = malloc(sizeof(ifo_handle_t));
if(!ifofile)
return 0;
memset(ifofile, 0, sizeof(ifo_handle_t));
ifofile->file = DVDOpenFile(dvd, 0, DVD_READ_INFO_FILE);
if(!ifofile->file) /* Should really catch any error and try to fallback */
ifofile->file = DVDOpenFile(dvd, 0, DVD_READ_INFO_BACKUP_FILE);
if(!ifofile->file) {
fprintf(stderr, "libdvdread: Can't open file VIDEO_TS.IFO.\n");
free(ifofile);
return 0;
}
if(ifoRead_VMG(ifofile))
return ifofile;
fprintf(stderr, "libdvdread: Invalid main menu IFO (VIDEO_TS.IFO).\n");
ifoClose(ifofile);
return 0;
}
ifo_handle_t *ifoOpenVTSI(dvd_reader_t *dvd, int title) {
ifo_handle_t *ifofile;
ifofile = malloc(sizeof(ifo_handle_t));
if(!ifofile)
return 0;
memset(ifofile, 0, sizeof(ifo_handle_t));
if(title <= 0 || title > 99) {
fprintf(stderr, "libdvdread: ifoOpenVTSI invalid title (%d).\n", title);
free(ifofile);
return 0;
}
ifofile->file = DVDOpenFile(dvd, title, DVD_READ_INFO_FILE);
if(!ifofile->file) /* Should really catch any error and try to fallback */
ifofile->file = DVDOpenFile(dvd, title, DVD_READ_INFO_BACKUP_FILE);
if(!ifofile->file) {
fprintf(stderr, "libdvdread: Can't open file VTS_%02d_0.IFO.\n", title);
free(ifofile);
return 0;
}
ifoRead_VTS(ifofile);
if(ifofile->vtsi_mat)
return ifofile;
fprintf(stderr, "libdvdread: Invalid IFO for title %d (VTS_%02d_0.IFO).\n",
title, title);
ifoClose(ifofile);
return 0;
}
void ifoClose(ifo_handle_t *ifofile) {
if(!ifofile)
return;
ifoFree_VOBU_ADMAP(ifofile);
ifoFree_TITLE_VOBU_ADMAP(ifofile);
ifoFree_C_ADT(ifofile);
ifoFree_TITLE_C_ADT(ifofile);
ifoFree_TXTDT_MGI(ifofile);
ifoFree_VTS_ATRT(ifofile);
ifoFree_PTL_MAIT(ifofile);
ifoFree_PGCI_UT(ifofile);
ifoFree_TT_SRPT(ifofile);
ifoFree_FP_PGC(ifofile);
ifoFree_PGCIT(ifofile);
ifoFree_VTS_PTT_SRPT(ifofile);
if(ifofile->vmgi_mat)
free(ifofile->vmgi_mat);
if(ifofile->vtsi_mat)
free(ifofile->vtsi_mat);
DVDCloseFile(ifofile->file);
ifofile->file = 0;
free(ifofile);
ifofile = 0;
}
static int ifoRead_VMG(ifo_handle_t *ifofile) {
vmgi_mat_t *vmgi_mat;
vmgi_mat = malloc(sizeof(vmgi_mat_t));
if(!vmgi_mat)
return 0;
ifofile->vmgi_mat = vmgi_mat;
if(!DVDFileSeek_(ifofile->file, 0)) {
free(ifofile->vmgi_mat);
ifofile->vmgi_mat = 0;
return 0;
}
if(!DVDReadBytes(ifofile->file, vmgi_mat, sizeof(vmgi_mat_t))) {
free(ifofile->vmgi_mat);
ifofile->vmgi_mat = 0;
return 0;
}
if(strncmp("DVDVIDEO-VMG", vmgi_mat->vmg_identifier, 12) != 0) {
free(ifofile->vmgi_mat);
ifofile->vmgi_mat = 0;
return 0;
}
B2N_32(vmgi_mat->vmg_last_sector);
B2N_32(vmgi_mat->vmgi_last_sector);
B2N_32(vmgi_mat->vmg_category);
B2N_16(vmgi_mat->vmg_nr_of_volumes);
B2N_16(vmgi_mat->vmg_this_volume_nr);
B2N_16(vmgi_mat->vmg_nr_of_title_sets);
B2N_64(vmgi_mat->vmg_pos_code);
B2N_32(vmgi_mat->vmgi_last_byte);
B2N_32(vmgi_mat->first_play_pgc);
B2N_32(vmgi_mat->vmgm_vobs);
B2N_32(vmgi_mat->tt_srpt);
B2N_32(vmgi_mat->vmgm_pgci_ut);
B2N_32(vmgi_mat->ptl_mait);
B2N_32(vmgi_mat->vts_atrt);
B2N_32(vmgi_mat->txtdt_mgi);
B2N_32(vmgi_mat->vmgm_c_adt);
B2N_32(vmgi_mat->vmgm_vobu_admap);
B2N_16(vmgi_mat->vmgm_audio_attr.lang_code);
B2N_16(vmgi_mat->vmgm_subp_attr.lang_code);
CHECK_ZERO(vmgi_mat->zero_1);
CHECK_ZERO(vmgi_mat->zero_2);
CHECK_ZERO(vmgi_mat->zero_3);
CHECK_ZERO(vmgi_mat->zero_4);
CHECK_ZERO(vmgi_mat->zero_5);
CHECK_ZERO(vmgi_mat->zero_6);
CHECK_ZERO(vmgi_mat->zero_7);
CHECK_ZERO(vmgi_mat->zero_8);
CHECK_ZERO(vmgi_mat->zero_9);
CHECK_ZERO(vmgi_mat->zero_10);
CHECK_VALUE(vmgi_mat->vmg_last_sector != 0);
CHECK_VALUE(vmgi_mat->vmgi_last_sector != 0);
CHECK_VALUE(vmgi_mat->vmgi_last_sector * 2 <= vmgi_mat->vmg_last_sector);
CHECK_VALUE(vmgi_mat->vmgi_last_sector * 2 <= vmgi_mat->vmg_last_sector);
CHECK_VALUE(vmgi_mat->vmg_nr_of_volumes != 0);
CHECK_VALUE(vmgi_mat->vmg_this_volume_nr != 0);
CHECK_VALUE(vmgi_mat->vmg_this_volume_nr <= vmgi_mat->vmg_nr_of_volumes);
CHECK_VALUE(vmgi_mat->disc_side == 1 || vmgi_mat->disc_side == 2);
CHECK_VALUE(vmgi_mat->vmg_nr_of_title_sets != 0);
CHECK_VALUE(vmgi_mat->vmgi_last_byte >= 341);
CHECK_VALUE(vmgi_mat->vmgi_last_byte / DVD_BLOCK_LEN <=
vmgi_mat->vmgi_last_sector);
/* It seems that first_play_pgc is optional. */
CHECK_VALUE(vmgi_mat->first_play_pgc < vmgi_mat->vmgi_last_byte);
CHECK_VALUE(vmgi_mat->vmgm_vobs == 0 ||
(vmgi_mat->vmgm_vobs > vmgi_mat->vmgi_last_sector &&
vmgi_mat->vmgm_vobs < vmgi_mat->vmg_last_sector));
CHECK_VALUE(vmgi_mat->tt_srpt <= vmgi_mat->vmgi_last_sector);
CHECK_VALUE(vmgi_mat->vmgm_pgci_ut <= vmgi_mat->vmgi_last_sector);
CHECK_VALUE(vmgi_mat->ptl_mait <= vmgi_mat->vmgi_last_sector);
CHECK_VALUE(vmgi_mat->vts_atrt <= vmgi_mat->vmgi_last_sector);
CHECK_VALUE(vmgi_mat->txtdt_mgi <= vmgi_mat->vmgi_last_sector);
CHECK_VALUE(vmgi_mat->vmgm_c_adt <= vmgi_mat->vmgi_last_sector);
CHECK_VALUE(vmgi_mat->vmgm_vobu_admap <= vmgi_mat->vmgi_last_sector);
CHECK_VALUE(vmgi_mat->nr_of_vmgm_audio_streams <= 1);
CHECK_VALUE(vmgi_mat->nr_of_vmgm_subp_streams <= 1);
return 1;
}
static int ifoRead_VTS(ifo_handle_t *ifofile) {
vtsi_mat_t *vtsi_mat;
int i;
vtsi_mat = malloc(sizeof(vtsi_mat_t));
if(!vtsi_mat)
return 0;
ifofile->vtsi_mat = vtsi_mat;
if(!DVDFileSeek_(ifofile->file, 0)) {
free(ifofile->vtsi_mat);
ifofile->vtsi_mat = 0;
return 0;
}
if(!(DVDReadBytes(ifofile->file, vtsi_mat, sizeof(vtsi_mat_t)))) {
free(ifofile->vtsi_mat);
ifofile->vtsi_mat = 0;
return 0;
}
if(strncmp("DVDVIDEO-VTS", vtsi_mat->vts_identifier, 12) != 0) {
free(ifofile->vtsi_mat);
ifofile->vtsi_mat = 0;
return 0;
}
B2N_32(vtsi_mat->vts_last_sector);
B2N_32(vtsi_mat->vtsi_last_sector);
B2N_32(vtsi_mat->vts_category);
B2N_32(vtsi_mat->vtsi_last_byte);
B2N_32(vtsi_mat->vtsm_vobs);
B2N_32(vtsi_mat->vtstt_vobs);
B2N_32(vtsi_mat->vts_ptt_srpt);
B2N_32(vtsi_mat->vts_pgcit);
B2N_32(vtsi_mat->vtsm_pgci_ut);
B2N_32(vtsi_mat->vts_tmapt);
B2N_32(vtsi_mat->vtsm_c_adt);
B2N_32(vtsi_mat->vtsm_vobu_admap);
B2N_32(vtsi_mat->vts_c_adt);
B2N_32(vtsi_mat->vts_vobu_admap);
B2N_16(vtsi_mat->vtsm_audio_attr.lang_code);
B2N_16(vtsi_mat->vtsm_subp_attr.lang_code);
for(i = 0; i < 8; i++)
B2N_16(vtsi_mat->vts_audio_attr[i].lang_code);
for(i = 0; i < 32; i++)
B2N_16(vtsi_mat->vts_subp_attr[i].lang_code);
CHECK_ZERO(vtsi_mat->zero_1);
CHECK_ZERO(vtsi_mat->zero_2);
CHECK_ZERO(vtsi_mat->zero_3);
CHECK_ZERO(vtsi_mat->zero_4);
CHECK_ZERO(vtsi_mat->zero_5);
CHECK_ZERO(vtsi_mat->zero_6);
CHECK_ZERO(vtsi_mat->zero_7);
CHECK_ZERO(vtsi_mat->zero_8);
CHECK_ZERO(vtsi_mat->zero_9);
CHECK_ZERO(vtsi_mat->zero_10);
CHECK_ZERO(vtsi_mat->zero_11);
CHECK_ZERO(vtsi_mat->zero_12);
CHECK_ZERO(vtsi_mat->zero_13);
CHECK_ZERO(vtsi_mat->zero_14);
CHECK_ZERO(vtsi_mat->zero_15);
CHECK_ZERO(vtsi_mat->zero_16);
CHECK_ZERO(vtsi_mat->zero_17);
CHECK_ZERO(vtsi_mat->zero_18);
CHECK_ZERO(vtsi_mat->zero_19);
CHECK_ZERO(vtsi_mat->zero_20);
CHECK_ZERO(vtsi_mat->zero_21);
CHECK_VALUE(vtsi_mat->vtsi_last_sector*2 <= vtsi_mat->vts_last_sector);
CHECK_VALUE(vtsi_mat->vtsi_last_byte/DVD_BLOCK_LEN <= vtsi_mat->vtsi_last_sector);
CHECK_VALUE(vtsi_mat->vtsm_vobs == 0 ||
(vtsi_mat->vtsm_vobs > vtsi_mat->vtsi_last_sector &&
vtsi_mat->vtsm_vobs < vtsi_mat->vts_last_sector));
CHECK_VALUE(vtsi_mat->vtstt_vobs == 0 ||
(vtsi_mat->vtstt_vobs > vtsi_mat->vtsi_last_sector &&
vtsi_mat->vtstt_vobs < vtsi_mat->vts_last_sector));
CHECK_VALUE(vtsi_mat->vts_ptt_srpt <= vtsi_mat->vtsi_last_sector);
CHECK_VALUE(vtsi_mat->vts_pgcit <= vtsi_mat->vtsi_last_sector);
CHECK_VALUE(vtsi_mat->vtsm_pgci_ut <= vtsi_mat->vtsi_last_sector);
CHECK_VALUE(vtsi_mat->vts_tmapt <= vtsi_mat->vtsi_last_sector);
CHECK_VALUE(vtsi_mat->vtsm_c_adt <= vtsi_mat->vtsi_last_sector);
CHECK_VALUE(vtsi_mat->vtsm_vobu_admap <= vtsi_mat->vtsi_last_sector);
CHECK_VALUE(vtsi_mat->vts_c_adt <= vtsi_mat->vtsi_last_sector);
CHECK_VALUE(vtsi_mat->vts_vobu_admap <= vtsi_mat->vtsi_last_sector);
CHECK_VALUE(vtsi_mat->nr_of_vtsm_audio_streams <= 1);
CHECK_VALUE(vtsi_mat->nr_of_vtsm_subp_streams <= 1);
CHECK_VALUE(vtsi_mat->nr_of_vts_audio_streams <= 8);
for(i = vtsi_mat->nr_of_vts_audio_streams; i < 8; i++)
CHECK_ZERO(vtsi_mat->vts_audio_attr[i]);
CHECK_VALUE(vtsi_mat->nr_of_vts_subp_streams <= 32);
for(i = vtsi_mat->nr_of_vts_subp_streams; i < 32; i++)
CHECK_ZERO(vtsi_mat->vts_subp_attr[i]);
for(i = 0; i < 8; i++) {
CHECK_ZERO0(vtsi_mat->vts_mu_audio_attr[i].zero1);
CHECK_ZERO0(vtsi_mat->vts_mu_audio_attr[i].zero2);
CHECK_ZERO0(vtsi_mat->vts_mu_audio_attr[i].zero3);
CHECK_ZERO0(vtsi_mat->vts_mu_audio_attr[i].zero4);
CHECK_ZERO0(vtsi_mat->vts_mu_audio_attr[i].zero5);
CHECK_ZERO(vtsi_mat->vts_mu_audio_attr[i].zero6);
}
return 1;
}
static int ifoRead_PGC_COMMAND_TBL(ifo_handle_t *ifofile,
pgc_command_tbl_t *cmd_tbl,
unsigned int offset) {
memset(cmd_tbl, 0, sizeof(pgc_command_tbl_t));
if(!DVDFileSeek_(ifofile->file, offset))
return 0;
if(!(DVDReadBytes(ifofile->file, cmd_tbl, PGC_COMMAND_TBL_SIZE)))
return 0;
B2N_16(cmd_tbl->nr_of_pre);
B2N_16(cmd_tbl->nr_of_post);
B2N_16(cmd_tbl->nr_of_cell);
CHECK_VALUE(cmd_tbl->nr_of_pre + cmd_tbl->nr_of_post + cmd_tbl->nr_of_cell<= 255);
if(cmd_tbl->nr_of_pre != 0) {
unsigned int pre_cmds_size = cmd_tbl->nr_of_pre * COMMAND_DATA_SIZE;
cmd_tbl->pre_cmds = malloc(pre_cmds_size);
if(!cmd_tbl->pre_cmds)
return 0;
if(!(DVDReadBytes(ifofile->file, cmd_tbl->pre_cmds, pre_cmds_size))) {
free(cmd_tbl->pre_cmds);
return 0;
}
}
if(cmd_tbl->nr_of_post != 0) {
unsigned int post_cmds_size = cmd_tbl->nr_of_post * COMMAND_DATA_SIZE;
cmd_tbl->post_cmds = malloc(post_cmds_size);
if(!cmd_tbl->post_cmds) {
if(cmd_tbl->pre_cmds)
free(cmd_tbl->pre_cmds);
return 0;
}
if(!(DVDReadBytes(ifofile->file, cmd_tbl->post_cmds, post_cmds_size))) {
if(cmd_tbl->pre_cmds)
free(cmd_tbl->pre_cmds);
free(cmd_tbl->post_cmds);
return 0;
}
}
if(cmd_tbl->nr_of_cell != 0) {
unsigned int cell_cmds_size = cmd_tbl->nr_of_cell * COMMAND_DATA_SIZE;
cmd_tbl->cell_cmds = malloc(cell_cmds_size);
if(!cmd_tbl->cell_cmds) {
if(cmd_tbl->pre_cmds)
free(cmd_tbl->pre_cmds);
if(cmd_tbl->post_cmds)
free(cmd_tbl->post_cmds);
return 0;
}
if(!(DVDReadBytes(ifofile->file, cmd_tbl->cell_cmds, cell_cmds_size))) {
if(cmd_tbl->pre_cmds)
free(cmd_tbl->pre_cmds);
if(cmd_tbl->post_cmds)
free(cmd_tbl->post_cmds);
free(cmd_tbl->cell_cmds);
return 0;
}
}
/*
* Make a run over all the commands and see that we can interpret them all?
*/
return 1;
}
static void ifoFree_PGC_COMMAND_TBL(pgc_command_tbl_t *cmd_tbl) {
if(cmd_tbl) {
if(cmd_tbl->nr_of_pre && cmd_tbl->pre_cmds)
free(cmd_tbl->pre_cmds);
if(cmd_tbl->nr_of_post && cmd_tbl->post_cmds)
free(cmd_tbl->post_cmds);
if(cmd_tbl->nr_of_cell && cmd_tbl->cell_cmds)
free(cmd_tbl->cell_cmds);
free(cmd_tbl);
}
}
static int ifoRead_PGC_PROGRAM_MAP(ifo_handle_t *ifofile,
pgc_program_map_t *program_map,
unsigned int nr, unsigned int offset) {
unsigned int size = nr * sizeof(pgc_program_map_t);
if(!DVDFileSeek_(ifofile->file, offset))
return 0;
if(!(DVDReadBytes(ifofile->file, program_map, size)))
return 0;
return 1;
}
static int ifoRead_CELL_PLAYBACK_TBL(ifo_handle_t *ifofile,
cell_playback_t *cell_playback,
unsigned int nr, unsigned int offset) {
unsigned int i;
unsigned int size = nr * sizeof(cell_playback_t);
if(!DVDFileSeek_(ifofile->file, offset))
return 0;
if(!(DVDReadBytes(ifofile->file, cell_playback, size)))
return 0;
for(i = 0; i < nr; i++) {
B2N_32(cell_playback[i].first_sector);
B2N_32(cell_playback[i].first_ilvu_end_sector);
B2N_32(cell_playback[i].last_vobu_start_sector);
B2N_32(cell_playback[i].last_sector);
/* Changed < to <= because this was false in the movie 'Pi'. */
CHECK_VALUE(cell_playback[i].last_vobu_start_sector <=
cell_playback[i].last_sector);
CHECK_VALUE(cell_playback[i].first_sector <=
cell_playback[i].last_vobu_start_sector);
}
return 1;
}
static int ifoRead_CELL_POSITION_TBL(ifo_handle_t *ifofile,
cell_position_t *cell_position,
unsigned int nr, unsigned int offset) {
unsigned int i;
unsigned int size = nr * sizeof(cell_position_t);
if(!DVDFileSeek_(ifofile->file, offset))
return 0;
if(!(DVDReadBytes(ifofile->file, cell_position, size)))
return 0;
for(i = 0; i < nr; i++) {
B2N_16(cell_position[i].vob_id_nr);
CHECK_ZERO(cell_position[i].zero_1);
}
return 1;
}
static int ifoRead_PGC(ifo_handle_t *ifofile, pgc_t *pgc, unsigned int offset) {
unsigned int i;
if(!DVDFileSeek_(ifofile->file, offset))
return 0;
if(!(DVDReadBytes(ifofile->file, pgc, PGC_SIZE)))
return 0;
B2N_16(pgc->next_pgc_nr);
B2N_16(pgc->prev_pgc_nr);
B2N_16(pgc->goup_pgc_nr);
B2N_16(pgc->command_tbl_offset);
B2N_16(pgc->program_map_offset);
B2N_16(pgc->cell_playback_offset);
B2N_16(pgc->cell_position_offset);
for(i = 0; i < 16; i++)
B2N_32(pgc->palette[i]);
CHECK_ZERO(pgc->zero_1);
CHECK_VALUE(pgc->nr_of_programs <= pgc->nr_of_cells);
/* verify time (look at print_time) */
for(i = 0; i < 8; i++)
if(!pgc->audio_control[i].present)
CHECK_ZERO(pgc->audio_control[i]);
for(i = 0; i < 32; i++)
if(!pgc->subp_control[i].present)
CHECK_ZERO(pgc->subp_control[i]);
/* Check that time is 0:0:0:0 also if nr_of_programs == 0 */
if(pgc->nr_of_programs == 0) {
CHECK_ZERO(pgc->still_time);
CHECK_ZERO(pgc->pg_playback_mode); // ??
CHECK_VALUE(pgc->program_map_offset == 0);
CHECK_VALUE(pgc->cell_playback_offset == 0);
CHECK_VALUE(pgc->cell_position_offset == 0);
} else {
CHECK_VALUE(pgc->program_map_offset != 0);
CHECK_VALUE(pgc->cell_playback_offset != 0);
CHECK_VALUE(pgc->cell_position_offset != 0);
}
if(pgc->command_tbl_offset != 0) {
pgc->command_tbl = malloc(sizeof(pgc_command_tbl_t));
if(!pgc->command_tbl)
return 0;
if(!ifoRead_PGC_COMMAND_TBL(ifofile, pgc->command_tbl,
offset + pgc->command_tbl_offset)) {
free(pgc->command_tbl);
return 0;
}
} else {
pgc->command_tbl = NULL;
}
if(pgc->program_map_offset != 0) {
pgc->program_map = malloc(pgc->nr_of_programs * sizeof(pgc_program_map_t));
if(!pgc->program_map) {
ifoFree_PGC_COMMAND_TBL(pgc->command_tbl);
return 0;
}
if(!ifoRead_PGC_PROGRAM_MAP(ifofile, pgc->program_map,pgc->nr_of_programs,
offset + pgc->program_map_offset)) {
ifoFree_PGC_COMMAND_TBL(pgc->command_tbl);
free(pgc->program_map);
return 0;
}
} else {
pgc->program_map = NULL;
}
if(pgc->cell_playback_offset != 0) {
pgc->cell_playback = malloc(pgc->nr_of_cells * sizeof(cell_playback_t));
if(!pgc->cell_playback) {
ifoFree_PGC_COMMAND_TBL(pgc->command_tbl);
if(pgc->program_map)
free(pgc->program_map);
return 0;
}
if(!ifoRead_CELL_PLAYBACK_TBL(ifofile, pgc->cell_playback,
pgc->nr_of_cells,
offset + pgc->cell_playback_offset)) {
ifoFree_PGC_COMMAND_TBL(pgc->command_tbl);
if(pgc->program_map)
free(pgc->program_map);
free(pgc->cell_playback);
return 0;
}
} else {
pgc->cell_playback = NULL;
}
if(pgc->cell_position_offset != 0) {
pgc->cell_position = malloc(pgc->nr_of_cells * sizeof(cell_position_t));
if(!pgc->cell_position) {
ifoFree_PGC(pgc);
return 0;
}
if(!ifoRead_CELL_POSITION_TBL(ifofile, pgc->cell_position,
pgc->nr_of_cells,
offset + pgc->cell_position_offset)) {
ifoFree_PGC(pgc);
return 0;
}
} else {
pgc->cell_position = NULL;
}
return 1;
}
int ifoRead_FP_PGC(ifo_handle_t *ifofile) {
if(!ifofile)
return 0;
if(!ifofile->vmgi_mat)
return 0;
/* It seems that first_play_pgc is optional after all. */
ifofile->first_play_pgc = 0;
if(ifofile->vmgi_mat->first_play_pgc == 0)
return 1;
ifofile->first_play_pgc = malloc(sizeof(pgc_t));
if(!ifofile->first_play_pgc)
return 0;
if(!ifoRead_PGC(ifofile, ifofile->first_play_pgc,
ifofile->vmgi_mat->first_play_pgc)) {
free(ifofile->first_play_pgc);
ifofile->first_play_pgc = 0;
return 0;
}
return 1;
}
static void ifoFree_PGC(pgc_t *pgc) {
if(pgc) {
ifoFree_PGC_COMMAND_TBL(pgc->command_tbl);
if(pgc->program_map)
free(pgc->program_map);
if(pgc->cell_playback)
free(pgc->cell_playback);
if(pgc->cell_position)
free(pgc->cell_position);
}
}
void ifoFree_FP_PGC(ifo_handle_t *ifofile) {
if(!ifofile)
return;
if(ifofile->first_play_pgc) {
ifoFree_PGC(ifofile->first_play_pgc);
free(ifofile->first_play_pgc);
ifofile->first_play_pgc = 0;
}
}
int ifoRead_TT_SRPT(ifo_handle_t *ifofile) {
tt_srpt_t *tt_srpt;
int i, info_length;
if(!ifofile)
return 0;
if(!ifofile->vmgi_mat)
return 0;
if(ifofile->vmgi_mat->tt_srpt == 0) /* mandatory */
return 0;
if(!DVDFileSeek_(ifofile->file, ifofile->vmgi_mat->tt_srpt * DVD_BLOCK_LEN))
return 0;
tt_srpt = malloc(sizeof(tt_srpt_t));
if(!tt_srpt)
return 0;
ifofile->tt_srpt = tt_srpt;
if(!(DVDReadBytes(ifofile->file, tt_srpt, TT_SRPT_SIZE))) {
fprintf(stderr, "libdvdread: Unable to read read TT_SRPT.\n");
free(tt_srpt);
return 0;
}
B2N_16(tt_srpt->nr_of_srpts);
B2N_32(tt_srpt->last_byte);
info_length = tt_srpt->last_byte + 1 - TT_SRPT_SIZE;
tt_srpt->title = malloc(info_length);
if(!tt_srpt->title) {
free(tt_srpt);
ifofile->tt_srpt = 0;
return 0;
}
if(!(DVDReadBytes(ifofile->file, tt_srpt->title, info_length))) {
fprintf(stderr, "libdvdread: Unable to read read TT_SRPT.\n");
ifoFree_TT_SRPT(ifofile);
return 0;
}
for(i = 0; i < tt_srpt->nr_of_srpts; i++) {
B2N_16(tt_srpt->title[i].nr_of_ptts);
B2N_16(tt_srpt->title[i].parental_id);
B2N_32(tt_srpt->title[i].title_set_sector);
}
CHECK_ZERO(tt_srpt->zero_1);
CHECK_VALUE(tt_srpt->nr_of_srpts != 0);
CHECK_VALUE(tt_srpt->nr_of_srpts < 100); // ??
CHECK_VALUE((int)tt_srpt->nr_of_srpts * sizeof(title_info_t) <= info_length);
for(i = 0; i < tt_srpt->nr_of_srpts; i++) {
CHECK_VALUE(tt_srpt->title[i].pb_ty.zero_1 == 0);
CHECK_VALUE(tt_srpt->title[i].nr_of_angles != 0);
CHECK_VALUE(tt_srpt->title[i].nr_of_angles < 10);
//CHECK_VALUE(tt_srpt->title[i].nr_of_ptts != 0);
// XXX: this assertion breaks Ghostbusters:
CHECK_VALUE(tt_srpt->title[i].nr_of_ptts < 1000); // ??
CHECK_VALUE(tt_srpt->title[i].title_set_nr != 0);
CHECK_VALUE(tt_srpt->title[i].title_set_nr < 100); // ??
CHECK_VALUE(tt_srpt->title[i].vts_ttn != 0);
CHECK_VALUE(tt_srpt->title[i].vts_ttn < 100); // ??
//CHECK_VALUE(tt_srpt->title[i].title_set_sector != 0);
}
// Make this a function
#if 0
if(memcmp((uint8_t *)tt_srpt->title +
tt_srpt->nr_of_srpts * sizeof(title_info_t),
my_friendly_zeros,
info_length - tt_srpt->nr_of_srpts * sizeof(title_info_t))) {
fprintf(stderr, "VMG_PTT_SRPT slack is != 0, ");
hexdump((uint8_t *)tt_srpt->title +
tt_srpt->nr_of_srpts * sizeof(title_info_t),
info_length - tt_srpt->nr_of_srpts * sizeof(title_info_t));
}
#endif
return 1;
}
void ifoFree_TT_SRPT(ifo_handle_t *ifofile) {
if(!ifofile)
return;
if(ifofile->tt_srpt) {
free(ifofile->tt_srpt->title);
free(ifofile->tt_srpt);
ifofile->tt_srpt = 0;
}
}
int ifoRead_VTS_PTT_SRPT(ifo_handle_t *ifofile) {
vts_ptt_srpt_t *vts_ptt_srpt;
int info_length, i, j;
uint32_t *data;
if(!ifofile)
return 0;
if(!ifofile->vtsi_mat)
return 0;
if(ifofile->vtsi_mat->vts_ptt_srpt == 0) /* mandatory */
return 0;
if(!DVDFileSeek_(ifofile->file,
ifofile->vtsi_mat->vts_ptt_srpt * DVD_BLOCK_LEN))
return 0;
vts_ptt_srpt = malloc(sizeof(vts_ptt_srpt_t));
if(!vts_ptt_srpt)
return 0;
ifofile->vts_ptt_srpt = vts_ptt_srpt;
if(!(DVDReadBytes(ifofile->file, vts_ptt_srpt, VTS_PTT_SRPT_SIZE))) {
fprintf(stderr, "libdvdread: Unable to read PTT search table.\n");
free(vts_ptt_srpt);
return 0;
}
B2N_16(vts_ptt_srpt->nr_of_srpts);
B2N_32(vts_ptt_srpt->last_byte);
CHECK_ZERO(vts_ptt_srpt->zero_1);
CHECK_VALUE(vts_ptt_srpt->nr_of_srpts != 0);
CHECK_VALUE(vts_ptt_srpt->nr_of_srpts < 100); // ??
info_length = vts_ptt_srpt->last_byte + 1 - VTS_PTT_SRPT_SIZE;
data = malloc(info_length);
if(!data) {
free(vts_ptt_srpt);
ifofile->vts_ptt_srpt = 0;
return 0;
}
if(!(DVDReadBytes(ifofile->file, data, info_length))) {
fprintf(stderr, "libdvdread: Unable to read PTT search table.\n");
free(vts_ptt_srpt);
free(data);
ifofile->vts_ptt_srpt = 0;
return 0;
}
for(i = 0; i < vts_ptt_srpt->nr_of_srpts; i++) {
B2N_32(data[i]);
/* assert(data[i] + sizeof(ptt_info_t) <= vts_ptt_srpt->last_byte + 1);
Magic Knight Rayearth Daybreak is mastered very strange and has
Titles with 0 PTTs. They all have a data[i] offsets beyond the end of
of the vts_ptt_srpt structure. */
CHECK_VALUE(data[i] + sizeof(ptt_info_t) <= vts_ptt_srpt->last_byte + 1 + 4);
}
vts_ptt_srpt->ttu_offset = data;
vts_ptt_srpt->title = malloc(vts_ptt_srpt->nr_of_srpts * sizeof(ttu_t));
if(!vts_ptt_srpt->title) {
free(vts_ptt_srpt);
free(data);
ifofile->vts_ptt_srpt = 0;
return 0;
}
for(i = 0; i < vts_ptt_srpt->nr_of_srpts; i++) {
int n;
if(i < vts_ptt_srpt->nr_of_srpts - 1)
n = (data[i+1] - data[i]);
else
n = (vts_ptt_srpt->last_byte + 1 - data[i]);
/* assert(n > 0 && (n % 4) == 0);
Magic Knight Rayearth Daybreak is mastered very strange and has
Titles with 0 PTTs. */
if(n < 0) n = 0;
CHECK_VALUE(n % 4 == 0);
vts_ptt_srpt->title[i].nr_of_ptts = n / 4;
vts_ptt_srpt->title[i].ptt = malloc(n * sizeof(ptt_info_t));
if(!vts_ptt_srpt->title[i].ptt) {
for(n = 0; n < i; n++)
free(vts_ptt_srpt->title[n].ptt);
free(vts_ptt_srpt);
free(data);
ifofile->vts_ptt_srpt = 0;
return 0;
}
for(j = 0; j < vts_ptt_srpt->title[i].nr_of_ptts; j++) {
/* The assert placed here because of Magic Knight Rayearth Daybreak */
CHECK_VALUE(data[i] + sizeof(ptt_info_t) <= vts_ptt_srpt->last_byte + 1);
vts_ptt_srpt->title[i].ptt[j].pgcn
= *(uint16_t*)(((char *)data) + data[i] + 4*j - VTS_PTT_SRPT_SIZE);
vts_ptt_srpt->title[i].ptt[j].pgn
= *(uint16_t*)(((char *)data) + data[i] + 4*j + 2 - VTS_PTT_SRPT_SIZE);
}
}
for(i = 0; i < vts_ptt_srpt->nr_of_srpts; i++) {
for(j = 0; j < vts_ptt_srpt->title[i].nr_of_ptts; j++) {
B2N_16(vts_ptt_srpt->title[i].ptt[j].pgcn);
B2N_16(vts_ptt_srpt->title[i].ptt[j].pgn);
}
}
for(i = 0; i < vts_ptt_srpt->nr_of_srpts; i++) {
CHECK_VALUE(vts_ptt_srpt->title[i].nr_of_ptts < 1000); // ??
for(j = 0; j < vts_ptt_srpt->title[i].nr_of_ptts; j++) {
CHECK_VALUE(vts_ptt_srpt->title[i].ptt[j].pgcn != 0 );
CHECK_VALUE(vts_ptt_srpt->title[i].ptt[j].pgcn < 1000); // ??
CHECK_VALUE(vts_ptt_srpt->title[i].ptt[j].pgn != 0);
CHECK_VALUE(vts_ptt_srpt->title[i].ptt[j].pgn < 100); // ??
}
}
return 1;
}
void ifoFree_VTS_PTT_SRPT(ifo_handle_t *ifofile) {
if(!ifofile)
return;
if(ifofile->vts_ptt_srpt) {
int i;
for(i = 0; i < ifofile->vts_ptt_srpt->nr_of_srpts; i++)
free(ifofile->vts_ptt_srpt->title[i].ptt);
free(ifofile->vts_ptt_srpt->ttu_offset);
free(ifofile->vts_ptt_srpt->title);
free(ifofile->vts_ptt_srpt);
ifofile->vts_ptt_srpt = 0;
}
}
int ifoRead_PTL_MAIT(ifo_handle_t *ifofile) {
ptl_mait_t *ptl_mait;
int info_length;
unsigned int i, j;
if(!ifofile)
return 0;
if(!ifofile->vmgi_mat)
return 0;
if(ifofile->vmgi_mat->ptl_mait == 0)
return 1;
if(!DVDFileSeek_(ifofile->file, ifofile->vmgi_mat->ptl_mait * DVD_BLOCK_LEN))
return 0;
ptl_mait = malloc(sizeof(ptl_mait_t));
if(!ptl_mait)
return 0;
ifofile->ptl_mait = ptl_mait;
if(!(DVDReadBytes(ifofile->file, ptl_mait, PTL_MAIT_SIZE))) {
free(ptl_mait);
ifofile->ptl_mait = 0;
return 0;
}
B2N_16(ptl_mait->nr_of_countries);
B2N_16(ptl_mait->nr_of_vtss);
B2N_32(ptl_mait->last_byte);
CHECK_VALUE(ptl_mait->nr_of_countries != 0);
CHECK_VALUE(ptl_mait->nr_of_countries < 100); // ??
CHECK_VALUE(ptl_mait->nr_of_vtss != 0);
CHECK_VALUE(ptl_mait->nr_of_vtss < 100); // ??
CHECK_VALUE(ptl_mait->nr_of_countries * PTL_MAIT_COUNTRY_SIZE
<= ptl_mait->last_byte + 1 - PTL_MAIT_SIZE);
info_length = ptl_mait->nr_of_countries * sizeof(ptl_mait_country_t);
ptl_mait->countries = malloc(info_length);
if(!ptl_mait->countries) {
free(ptl_mait);
ifofile->ptl_mait = 0;
return 0;
}
for(i = 0; i < ptl_mait->nr_of_countries; i++) {
if(!(DVDReadBytes(ifofile->file, &ptl_mait->countries[i], PTL_MAIT_COUNTRY_SIZE))) {
fprintf(stderr, "libdvdread: Unable to read PTL_MAIT.\n");
free(ptl_mait->countries);
free(ptl_mait);
ifofile->ptl_mait = 0;
return 0;
}
}
for(i = 0; i < ptl_mait->nr_of_countries; i++) {
B2N_16(ptl_mait->countries[i].country_code);
B2N_16(ptl_mait->countries[i].pf_ptl_mai_start_byte);
}
for(i = 0; i < ptl_mait->nr_of_countries; i++) {
CHECK_ZERO(ptl_mait->countries[i].zero_1);
CHECK_ZERO(ptl_mait->countries[i].zero_2);
CHECK_VALUE(ptl_mait->countries[i].pf_ptl_mai_start_byte
+ 8*2 * (ptl_mait->nr_of_vtss + 1) <= ptl_mait->last_byte + 1);
}
for(i = 0; i < ptl_mait->nr_of_countries; i++) {
uint16_t *pf_temp;
if(!DVDFileSeek_(ifofile->file,
ifofile->vmgi_mat->ptl_mait * DVD_BLOCK_LEN
+ ptl_mait->countries[i].pf_ptl_mai_start_byte)) {
fprintf(stderr, "libdvdread: Unable to seak PTL_MAIT table.\n");
free(ptl_mait->countries);
free(ptl_mait);
return 0;
}
info_length = (ptl_mait->nr_of_vtss + 1) * sizeof(pf_level_t);
pf_temp = malloc(info_length);
if(!pf_temp) {
for(j = 0; j < i ; j++) {
free(ptl_mait->countries[j].pf_ptl_mai);
}
free(ptl_mait->countries);
free(ptl_mait);
return 0;
}
if(!(DVDReadBytes(ifofile->file, pf_temp, info_length))) {
fprintf(stderr, "libdvdread: Unable to read PTL_MAIT table.\n");
free(pf_temp);
for(j = 0; j < i ; j++) {
free(ptl_mait->countries[j].pf_ptl_mai);
}
free(ptl_mait->countries);
free(ptl_mait);
return 0;
}
for (j = 0; j < ((ptl_mait->nr_of_vtss + 1) * 8); j++) {
B2N_16(pf_temp[j]);
}
ptl_mait->countries[i].pf_ptl_mai = malloc(info_length);
if(!ptl_mait->countries[i].pf_ptl_mai) {
free(pf_temp);
for(j = 0; j < i ; j++) {
free(ptl_mait->countries[j].pf_ptl_mai);
}
free(ptl_mait->countries);
free(ptl_mait);
return 0;
}
{ /* Transpose the array so we can use C indexing. */
int level, vts;
for(level = 0; level < 8; level++) {
for(vts = 0; vts <= ptl_mait->nr_of_vtss; vts++) {
ptl_mait->countries[i].pf_ptl_mai[vts][level] =
pf_temp[(7-level)*(ptl_mait->nr_of_vtss+1) + vts];
}
}
free(pf_temp);
}
}
return 1;
}
void ifoFree_PTL_MAIT(ifo_handle_t *ifofile) {
unsigned int i;
if(!ifofile)
return;
if(ifofile->ptl_mait) {
for(i = 0; i < ifofile->ptl_mait->nr_of_countries; i++) {
free(ifofile->ptl_mait->countries[i].pf_ptl_mai);
}
free(ifofile->ptl_mait->countries);
free(ifofile->ptl_mait);
ifofile->ptl_mait = 0;
}
}
int ifoRead_VTS_TMAPT(ifo_handle_t *ifofile) {
vts_tmapt_t *vts_tmapt;
uint32_t *vts_tmap_srp;
unsigned int offset;
int info_length;
unsigned int i, j;
if(!ifofile)
return 0;
if(!ifofile->vtsi_mat)
return 0;
if(ifofile->vtsi_mat->vts_tmapt == 0) { /* optional(?) */
ifofile->vts_tmapt = NULL;
fprintf(stderr,"Please send bug report - no VTS_TMAPT ?? \n");
return 1;
}
offset = ifofile->vtsi_mat->vts_tmapt * DVD_BLOCK_LEN;
if(!DVDFileSeek_(ifofile->file, offset))
return 0;
vts_tmapt = malloc(sizeof(vts_tmapt_t));
if(!vts_tmapt)
return 0;
ifofile->vts_tmapt = vts_tmapt;
if(!(DVDReadBytes(ifofile->file, vts_tmapt, VTS_TMAPT_SIZE))) {
fprintf(stderr, "libdvdread: Unable to read VTS_TMAPT.\n");
free(vts_tmapt);
ifofile->vts_tmapt = NULL;
return 0;
}
B2N_16(vts_tmapt->nr_of_tmaps);
B2N_32(vts_tmapt->last_byte);
CHECK_ZERO(vts_tmapt->zero_1);
info_length = vts_tmapt->nr_of_tmaps * 4;
vts_tmap_srp = malloc(info_length);
if(!vts_tmap_srp) {
free(vts_tmapt);
ifofile->vts_tmapt = NULL;
return 0;
}
vts_tmapt->tmap_offset = vts_tmap_srp;
if(!(DVDReadBytes(ifofile->file, vts_tmap_srp, info_length))) {
fprintf(stderr, "libdvdread: Unable to read VTS_TMAPT.\n");
free(vts_tmap_srp);
free(vts_tmapt);
ifofile->vts_tmapt = NULL;
return 0;
}
for (i = 0; i < vts_tmapt->nr_of_tmaps; i++) {
B2N_32(vts_tmap_srp[i]);
}
info_length = vts_tmapt->nr_of_tmaps * sizeof(vts_tmap_t);
vts_tmapt->tmap = malloc(info_length);
if(!vts_tmapt->tmap) {
free(vts_tmap_srp);
free(vts_tmapt);
ifofile->vts_tmapt = NULL;
return 0;
}
memset(vts_tmapt->tmap, 0, info_length); /* So ifoFree_VTS_TMAPT works. */
for(i = 0; i < vts_tmapt->nr_of_tmaps; i++) {
if(!DVDFileSeek_(ifofile->file, offset + vts_tmap_srp[i])) {
ifoFree_VTS_TMAPT(ifofile);
return 0;
}
if(!(DVDReadBytes(ifofile->file, &vts_tmapt->tmap[i], VTS_TMAP_SIZE))) {
fprintf(stderr, "libdvdread: Unable to read VTS_TMAP.\n");
ifoFree_VTS_TMAPT(ifofile);
return 0;
}
B2N_16(vts_tmapt->tmap[i].nr_of_entries);
CHECK_ZERO(vts_tmapt->tmap[i].zero_1);
if(vts_tmapt->tmap[i].nr_of_entries == 0) { /* Early out if zero entries */
vts_tmapt->tmap[i].map_ent = NULL;
continue;
}
info_length = vts_tmapt->tmap[i].nr_of_entries * sizeof(map_ent_t);
vts_tmapt->tmap[i].map_ent = malloc(info_length);
if(!vts_tmapt->tmap[i].map_ent) {
ifoFree_VTS_TMAPT(ifofile);
return 0;
}
if(!(DVDReadBytes(ifofile->file, vts_tmapt->tmap[i].map_ent, info_length))) {
fprintf(stderr, "libdvdread: Unable to read VTS_TMAP_ENT.\n");
ifoFree_VTS_TMAPT(ifofile);
return 0;
}
for(j = 0; j < vts_tmapt->tmap[i].nr_of_entries; j++)
B2N_32(vts_tmapt->tmap[i].map_ent[j]);
}
return 1;
}
void ifoFree_VTS_TMAPT(ifo_handle_t *ifofile) {
unsigned int i;
if(!ifofile)
return;
if(ifofile->vts_tmapt) {
for(i = 0; i < ifofile->vts_tmapt->nr_of_tmaps; i++)
if(ifofile->vts_tmapt->tmap[i].map_ent)
free(ifofile->vts_tmapt->tmap[i].map_ent);
free(ifofile->vts_tmapt->tmap);
free(ifofile->vts_tmapt->tmap_offset);
free(ifofile->vts_tmapt);
ifofile->vts_tmapt = NULL;
}
}
int ifoRead_TITLE_C_ADT(ifo_handle_t *ifofile) {
if(!ifofile)
return 0;
if(!ifofile->vtsi_mat)
return 0;
if(ifofile->vtsi_mat->vts_c_adt == 0) /* mandatory */
return 0;
ifofile->vts_c_adt = malloc(sizeof(c_adt_t));
if(!ifofile->vts_c_adt)
return 0;
if(!ifoRead_C_ADT_internal(ifofile, ifofile->vts_c_adt,
ifofile->vtsi_mat->vts_c_adt)) {
free(ifofile->vts_c_adt);
ifofile->vts_c_adt = 0;
return 0;
}
return 1;
}
int ifoRead_C_ADT(ifo_handle_t *ifofile) {
unsigned int sector;
if(!ifofile)
return 0;
if(ifofile->vmgi_mat) {
if(ifofile->vmgi_mat->vmgm_c_adt == 0)
return 1;
sector = ifofile->vmgi_mat->vmgm_c_adt;
} else if(ifofile->vtsi_mat) {
if(ifofile->vtsi_mat->vtsm_c_adt == 0)
return 1;
sector = ifofile->vtsi_mat->vtsm_c_adt;
} else {
return 0;
}
ifofile->menu_c_adt = malloc(sizeof(c_adt_t));
if(!ifofile->menu_c_adt)
return 0;
if(!ifoRead_C_ADT_internal(ifofile, ifofile->menu_c_adt, sector)) {
free(ifofile->menu_c_adt);
ifofile->menu_c_adt = 0;
return 0;
}
return 1;
}
static int ifoRead_C_ADT_internal(ifo_handle_t *ifofile,
c_adt_t *c_adt, unsigned int sector) {
int i, info_length;
if(!DVDFileSeek_(ifofile->file, sector * DVD_BLOCK_LEN))
return 0;
if(!(DVDReadBytes(ifofile->file, c_adt, C_ADT_SIZE)))
return 0;
B2N_16(c_adt->nr_of_vobs);
B2N_32(c_adt->last_byte);
info_length = c_adt->last_byte + 1 - C_ADT_SIZE;
CHECK_ZERO(c_adt->zero_1);
/* assert(c_adt->nr_of_vobs > 0);
Magic Knight Rayearth Daybreak is mastered very strange and has
Titles with a VOBS that has no cells. */
CHECK_VALUE(info_length % sizeof(cell_adr_t) == 0);
/* assert(info_length / sizeof(cell_adr_t) >= c_adt->nr_of_vobs);
Enemy of the State region 2 (de) has Titles where nr_of_vobs field
is to high, they high ones are never referenced though. */
if(info_length / sizeof(cell_adr_t) < c_adt->nr_of_vobs) {
fprintf(stderr, "libdvdread: *C_ADT nr_of_vobs > avaiable info entries\n");
c_adt->nr_of_vobs = info_length / sizeof(cell_adr_t);
}
c_adt->cell_adr_table = malloc(info_length);
if(!c_adt->cell_adr_table)
return 0;
if(info_length &&
!(DVDReadBytes(ifofile->file, c_adt->cell_adr_table, info_length))) {
free(c_adt->cell_adr_table);
return 0;
}
for(i = 0; i < info_length/sizeof(cell_adr_t); i++) {
B2N_16(c_adt->cell_adr_table[i].vob_id);
B2N_32(c_adt->cell_adr_table[i].start_sector);
B2N_32(c_adt->cell_adr_table[i].last_sector);
CHECK_ZERO(c_adt->cell_adr_table[i].zero_1);
CHECK_VALUE(c_adt->cell_adr_table[i].vob_id > 0);
CHECK_VALUE(c_adt->cell_adr_table[i].vob_id <= c_adt->nr_of_vobs);
CHECK_VALUE(c_adt->cell_adr_table[i].cell_id > 0);
CHECK_VALUE(c_adt->cell_adr_table[i].start_sector <
c_adt->cell_adr_table[i].last_sector);
}
return 1;
}
static void ifoFree_C_ADT_internal(c_adt_t *c_adt) {
if(c_adt) {
free(c_adt->cell_adr_table);
free(c_adt);
}
}
void ifoFree_C_ADT(ifo_handle_t *ifofile) {
if(!ifofile)
return;
ifoFree_C_ADT_internal(ifofile->menu_c_adt);
ifofile->menu_c_adt = 0;
}
void ifoFree_TITLE_C_ADT(ifo_handle_t *ifofile) {
if(!ifofile)
return;
ifoFree_C_ADT_internal(ifofile->vts_c_adt);
ifofile->vts_c_adt = 0;
}
int ifoRead_TITLE_VOBU_ADMAP(ifo_handle_t *ifofile) {
if(!ifofile)
return 0;
if(!ifofile->vtsi_mat)
return 0;
if(ifofile->vtsi_mat->vts_vobu_admap == 0) /* mandatory */
return 0;
ifofile->vts_vobu_admap = malloc(sizeof(vobu_admap_t));
if(!ifofile->vts_vobu_admap)
return 0;
if(!ifoRead_VOBU_ADMAP_internal(ifofile, ifofile->vts_vobu_admap,
ifofile->vtsi_mat->vts_vobu_admap)) {
free(ifofile->vts_vobu_admap);
ifofile->vts_vobu_admap = 0;
return 0;
}
return 1;
}
int ifoRead_VOBU_ADMAP(ifo_handle_t *ifofile) {
unsigned int sector;
if(!ifofile)
return 0;
if(ifofile->vmgi_mat) {
if(ifofile->vmgi_mat->vmgm_vobu_admap == 0)
return 1;
sector = ifofile->vmgi_mat->vmgm_vobu_admap;
} else if(ifofile->vtsi_mat) {
if(ifofile->vtsi_mat->vtsm_vobu_admap == 0)
return 1;
sector = ifofile->vtsi_mat->vtsm_vobu_admap;
} else {
return 0;
}
ifofile->menu_vobu_admap = malloc(sizeof(vobu_admap_t));
if(!ifofile->menu_vobu_admap)
return 0;
if(!ifoRead_VOBU_ADMAP_internal(ifofile, ifofile->menu_vobu_admap, sector)) {
free(ifofile->menu_vobu_admap);
ifofile->menu_vobu_admap = 0;
return 0;
}
return 1;
}
static int ifoRead_VOBU_ADMAP_internal(ifo_handle_t *ifofile,
vobu_admap_t *vobu_admap,
unsigned int sector) {
unsigned int i;
int info_length;
if(!DVDFileSeek_(ifofile->file, sector * DVD_BLOCK_LEN))
return 0;
if(!(DVDReadBytes(ifofile->file, vobu_admap, VOBU_ADMAP_SIZE)))
return 0;
B2N_32(vobu_admap->last_byte);
info_length = vobu_admap->last_byte + 1 - VOBU_ADMAP_SIZE;
/* assert(info_length > 0);
Magic Knight Rayearth Daybreak is mastered very strange and has
Titles with a VOBS that has no VOBUs. */
CHECK_VALUE(info_length % sizeof(uint32_t) == 0);
vobu_admap->vobu_start_sectors = malloc(info_length);
if(!vobu_admap->vobu_start_sectors) {
return 0;
}
if(info_length &&
!(DVDReadBytes(ifofile->file,
vobu_admap->vobu_start_sectors, info_length))) {
free(vobu_admap->vobu_start_sectors);
return 0;
}
for(i = 0; i < info_length/sizeof(uint32_t); i++)
B2N_32(vobu_admap->vobu_start_sectors[i]);
return 1;
}
static void ifoFree_VOBU_ADMAP_internal(vobu_admap_t *vobu_admap) {
if(vobu_admap) {
free(vobu_admap->vobu_start_sectors);
free(vobu_admap);
}
}
void ifoFree_VOBU_ADMAP(ifo_handle_t *ifofile) {
if(!ifofile)
return;
ifoFree_VOBU_ADMAP_internal(ifofile->menu_vobu_admap);
ifofile->menu_vobu_admap = 0;
}
void ifoFree_TITLE_VOBU_ADMAP(ifo_handle_t *ifofile) {
if(!ifofile)
return;
ifoFree_VOBU_ADMAP_internal(ifofile->vts_vobu_admap);
ifofile->vts_vobu_admap = 0;
}
int ifoRead_PGCIT(ifo_handle_t *ifofile) {
if(!ifofile)
return 0;
if(!ifofile->vtsi_mat)
return 0;
if(ifofile->vtsi_mat->vts_pgcit == 0) /* mandatory */
return 0;
ifofile->vts_pgcit = malloc(sizeof(pgcit_t));
if(!ifofile->vts_pgcit)
return 0;
if(!ifoRead_PGCIT_internal(ifofile, ifofile->vts_pgcit,
ifofile->vtsi_mat->vts_pgcit * DVD_BLOCK_LEN)) {
free(ifofile->vts_pgcit);
ifofile->vts_pgcit = 0;
return 0;
}
return 1;
}
static int ifoRead_PGCIT_internal(ifo_handle_t *ifofile, pgcit_t *pgcit,
unsigned int offset) {
int i, info_length;
uint8_t *data, *ptr;
if(!DVDFileSeek_(ifofile->file, offset))
return 0;
if(!(DVDReadBytes(ifofile->file, pgcit, PGCIT_SIZE)))
return 0;
B2N_16(pgcit->nr_of_pgci_srp);
B2N_32(pgcit->last_byte);
CHECK_ZERO(pgcit->zero_1);
/* assert(pgcit->nr_of_pgci_srp != 0);
Magic Knight Rayearth Daybreak is mastered very strange and has
Titles with 0 PTTs. */
CHECK_VALUE(pgcit->nr_of_pgci_srp < 10000); // ?? seen max of 1338
info_length = pgcit->nr_of_pgci_srp * PGCI_SRP_SIZE;
data = malloc(info_length);
if(!data)
return 0;
if(info_length && !(DVDReadBytes(ifofile->file, data, info_length))) {
free(data);
return 0;
}
pgcit->pgci_srp = malloc(pgcit->nr_of_pgci_srp * sizeof(pgci_srp_t));
if(!pgcit->pgci_srp) {
free(data);
return 0;
}
ptr = data;
for(i = 0; i < pgcit->nr_of_pgci_srp; i++) {
memcpy(&pgcit->pgci_srp[i], ptr, PGCI_LU_SIZE);
ptr += PGCI_LU_SIZE;
B2N_16(pgcit->pgci_srp[i].ptl_id_mask);
B2N_32(pgcit->pgci_srp[i].pgc_start_byte);
CHECK_VALUE(pgcit->pgci_srp[i].unknown1 == 0);
}
free(data);
for(i = 0; i < pgcit->nr_of_pgci_srp; i++)
CHECK_VALUE(pgcit->pgci_srp[i].pgc_start_byte + PGC_SIZE <= pgcit->last_byte+1);
for(i = 0; i < pgcit->nr_of_pgci_srp; i++) {
pgcit->pgci_srp[i].pgc = malloc(sizeof(pgc_t));
if(!pgcit->pgci_srp[i].pgc) {
int j;
for(j = 0; j < i; j++) {
ifoFree_PGC(pgcit->pgci_srp[j].pgc);
free(pgcit->pgci_srp[j].pgc);
}
return 0;
}
if(!ifoRead_PGC(ifofile, pgcit->pgci_srp[i].pgc,
offset + pgcit->pgci_srp[i].pgc_start_byte)) {
int j;
for(j = 0; j < i; j++) {
ifoFree_PGC(pgcit->pgci_srp[j].pgc);
free(pgcit->pgci_srp[j].pgc);
}
free(pgcit->pgci_srp);
return 0;
}
}
return 1;
}
static void ifoFree_PGCIT_internal(pgcit_t *pgcit) {
if(pgcit) {
int i;
for(i = 0; i < pgcit->nr_of_pgci_srp; i++)
ifoFree_PGC(pgcit->pgci_srp[i].pgc);
free(pgcit->pgci_srp);
}
}
void ifoFree_PGCIT(ifo_handle_t *ifofile) {
if(!ifofile)
return;
if(ifofile->vts_pgcit) {
ifoFree_PGCIT_internal(ifofile->vts_pgcit);
free(ifofile->vts_pgcit);
ifofile->vts_pgcit = 0;
}
}
int ifoRead_PGCI_UT(ifo_handle_t *ifofile) {
pgci_ut_t *pgci_ut;
unsigned int sector;
unsigned int i;
int info_length;
uint8_t *data, *ptr;
if(!ifofile)
return 0;
if(ifofile->vmgi_mat) {
if(ifofile->vmgi_mat->vmgm_pgci_ut == 0)
return 1;
sector = ifofile->vmgi_mat->vmgm_pgci_ut;
} else if(ifofile->vtsi_mat) {
if(ifofile->vtsi_mat->vtsm_pgci_ut == 0)
return 1;
sector = ifofile->vtsi_mat->vtsm_pgci_ut;
} else {
return 0;
}
ifofile->pgci_ut = malloc(sizeof(pgci_ut_t));
if(!ifofile->pgci_ut)
return 0;
if(!DVDFileSeek_(ifofile->file, sector * DVD_BLOCK_LEN)) {
free(ifofile->pgci_ut);
ifofile->pgci_ut = 0;
return 0;
}
if(!(DVDReadBytes(ifofile->file, ifofile->pgci_ut, PGCI_UT_SIZE))) {
free(ifofile->pgci_ut);
ifofile->pgci_ut = 0;
return 0;
}
pgci_ut = ifofile->pgci_ut;
B2N_16(pgci_ut->nr_of_lus);
B2N_32(pgci_ut->last_byte);
CHECK_ZERO(pgci_ut->zero_1);
CHECK_VALUE(pgci_ut->nr_of_lus != 0);
CHECK_VALUE(pgci_ut->nr_of_lus < 100); // ?? 3-4 ?
CHECK_VALUE((uint32_t)pgci_ut->nr_of_lus * PGCI_LU_SIZE < pgci_ut->last_byte);
info_length = pgci_ut->nr_of_lus * PGCI_LU_SIZE;
data = malloc(info_length);
if(!data) {
free(pgci_ut);
ifofile->pgci_ut = 0;
return 0;
}
if(!(DVDReadBytes(ifofile->file, data, info_length))) {
free(data);
free(pgci_ut);
ifofile->pgci_ut = 0;
return 0;
}
pgci_ut->lu = malloc(pgci_ut->nr_of_lus * sizeof(pgci_lu_t));
if(!pgci_ut->lu) {
free(data);
free(pgci_ut);
ifofile->pgci_ut = 0;
return 0;
}
ptr = data;
for(i = 0; i < pgci_ut->nr_of_lus; i++) {
memcpy(&pgci_ut->lu[i], ptr, PGCI_LU_SIZE);
ptr += PGCI_LU_SIZE;
B2N_16(pgci_ut->lu[i].lang_code);
B2N_32(pgci_ut->lu[i].lang_start_byte);
}
free(data);
for(i = 0; i < pgci_ut->nr_of_lus; i++) {
// Maybe this is only defined for v1.1 and later titles?
/* If the bits in 'lu[i].exists' are enumerated abcd efgh then:
VTS_x_yy.IFO VIDEO_TS.IFO
a == 0x83 "Root" 0x82 "Title"
b == 0x84 "Subpicture"
c == 0x85 "Audio"
d == 0x86 "Angle"
e == 0x87 "PTT"
*/
CHECK_VALUE((pgci_ut->lu[i].exists & 0x07) == 0);
}
for(i = 0; i < pgci_ut->nr_of_lus; i++) {
pgci_ut->lu[i].pgcit = malloc(sizeof(pgcit_t));
if(!pgci_ut->lu[i].pgcit) {
unsigned int j;
for(j = 0; j < i; j++) {
ifoFree_PGCIT_internal(pgci_ut->lu[j].pgcit);
free(pgci_ut->lu[j].pgcit);
}
free(pgci_ut->lu);
free(pgci_ut);
ifofile->pgci_ut = 0;
return 0;
}
if(!ifoRead_PGCIT_internal(ifofile, pgci_ut->lu[i].pgcit,
sector * DVD_BLOCK_LEN
+ pgci_ut->lu[i].lang_start_byte)) {
unsigned int j;
for(j = 0; j < i; j++) {
ifoFree_PGCIT_internal(pgci_ut->lu[j].pgcit);
free(pgci_ut->lu[j].pgcit);
}
free(pgci_ut->lu[i].pgcit);
free(pgci_ut->lu);
free(pgci_ut);
ifofile->pgci_ut = 0;
return 0;
}
// FIXME: Iterate and verify that all menus that should exists accordingly
// to pgci_ut->lu[i].exists really do?
}
return 1;
}
void ifoFree_PGCI_UT(ifo_handle_t *ifofile) {
unsigned int i;
if(!ifofile)
return;
if(ifofile->pgci_ut) {
for(i = 0; i < ifofile->pgci_ut->nr_of_lus; i++) {
ifoFree_PGCIT_internal(ifofile->pgci_ut->lu[i].pgcit);
free(ifofile->pgci_ut->lu[i].pgcit);
}
free(ifofile->pgci_ut->lu);
free(ifofile->pgci_ut);
ifofile->pgci_ut = 0;
}
}
static int ifoRead_VTS_ATTRIBUTES(ifo_handle_t *ifofile,
vts_attributes_t *vts_attributes,
unsigned int offset) {
unsigned int i;
if(!DVDFileSeek_(ifofile->file, offset))
return 0;
if(!(DVDReadBytes(ifofile->file, vts_attributes, sizeof(vts_attributes_t))))
return 0;
B2N_32(vts_attributes->last_byte);
B2N_32(vts_attributes->vts_cat);
B2N_16(vts_attributes->vtsm_audio_attr.lang_code);
B2N_16(vts_attributes->vtsm_subp_attr.lang_code);
for(i = 0; i < 8; i++)
B2N_16(vts_attributes->vtstt_audio_attr[i].lang_code);
for(i = 0; i < 32; i++)
B2N_16(vts_attributes->vtstt_subp_attr[i].lang_code);
CHECK_ZERO(vts_attributes->zero_1);
CHECK_ZERO(vts_attributes->zero_2);
CHECK_ZERO(vts_attributes->zero_3);
CHECK_ZERO(vts_attributes->zero_4);
CHECK_ZERO(vts_attributes->zero_5);
CHECK_ZERO(vts_attributes->zero_6);
CHECK_ZERO(vts_attributes->zero_7);
CHECK_VALUE(vts_attributes->nr_of_vtsm_audio_streams <= 1);
CHECK_VALUE(vts_attributes->nr_of_vtsm_subp_streams <= 1);
CHECK_VALUE(vts_attributes->nr_of_vtstt_audio_streams <= 8);
for(i = vts_attributes->nr_of_vtstt_audio_streams; i < 8; i++)
CHECK_ZERO(vts_attributes->vtstt_audio_attr[i]);
CHECK_VALUE(vts_attributes->nr_of_vtstt_subp_streams <= 32);
{
unsigned int nr_coded;
CHECK_VALUE(vts_attributes->last_byte + 1 >= VTS_ATTRIBUTES_MIN_SIZE);
nr_coded = (vts_attributes->last_byte + 1 - VTS_ATTRIBUTES_MIN_SIZE)/6;
// This is often nr_coded = 70, how do you know how many there really are?
if(nr_coded > 32) { // We haven't read more from disk/file anyway
nr_coded = 32;
}
CHECK_VALUE(vts_attributes->nr_of_vtstt_subp_streams <= nr_coded);
for(i = vts_attributes->nr_of_vtstt_subp_streams; i < nr_coded; i++)
CHECK_ZERO(vts_attributes->vtstt_subp_attr[i]);
}
return 1;
}
int ifoRead_VTS_ATRT(ifo_handle_t *ifofile) {
vts_atrt_t *vts_atrt;
unsigned int i, info_length, sector;
uint32_t *data;
if(!ifofile)
return 0;
if(!ifofile->vmgi_mat)
return 0;
if(ifofile->vmgi_mat->vts_atrt == 0) /* mandatory */
return 0;
sector = ifofile->vmgi_mat->vts_atrt;
if(!DVDFileSeek_(ifofile->file, sector * DVD_BLOCK_LEN))
return 0;
vts_atrt = malloc(sizeof(vts_atrt_t));
if(!vts_atrt)
return 0;
ifofile->vts_atrt = vts_atrt;
if(!(DVDReadBytes(ifofile->file, vts_atrt, VTS_ATRT_SIZE))) {
free(vts_atrt);
ifofile->vts_atrt = 0;
return 0;
}
B2N_16(vts_atrt->nr_of_vtss);
B2N_32(vts_atrt->last_byte);
CHECK_ZERO(vts_atrt->zero_1);
CHECK_VALUE(vts_atrt->nr_of_vtss != 0);
CHECK_VALUE(vts_atrt->nr_of_vtss < 100); //??
CHECK_VALUE((uint32_t)vts_atrt->nr_of_vtss * (4 + VTS_ATTRIBUTES_MIN_SIZE) +
VTS_ATRT_SIZE < vts_atrt->last_byte + 1);
info_length = vts_atrt->nr_of_vtss * sizeof(uint32_t);
data = malloc(info_length);
if(!data) {
free(vts_atrt);
ifofile->vts_atrt = 0;
return 0;
}
vts_atrt->vts_atrt_offsets = data;
if(!(DVDReadBytes(ifofile->file, data, info_length))) {
free(data);
free(vts_atrt);
ifofile->vts_atrt = 0;
return 0;
}
for(i = 0; i < vts_atrt->nr_of_vtss; i++) {
B2N_32(data[i]);
CHECK_VALUE(data[i] + VTS_ATTRIBUTES_MIN_SIZE < vts_atrt->last_byte + 1);
}
info_length = vts_atrt->nr_of_vtss * sizeof(vts_attributes_t);
vts_atrt->vts = malloc(info_length);
if(!vts_atrt->vts) {
free(data);
free(vts_atrt);
ifofile->vts_atrt = 0;
return 0;
}
for(i = 0; i < vts_atrt->nr_of_vtss; i++) {
unsigned int offset = data[i];
if(!ifoRead_VTS_ATTRIBUTES(ifofile, &(vts_atrt->vts[i]),
(sector * DVD_BLOCK_LEN) + offset)) {
free(data);
free(vts_atrt);
ifofile->vts_atrt = 0;
return 0;
}
// This assert cant be in ifoRead_VTS_ATTRIBUTES
CHECK_VALUE(offset + vts_atrt->vts[i].last_byte <= vts_atrt->last_byte + 1);
// Is this check correct?
}
return 1;
}
void ifoFree_VTS_ATRT(ifo_handle_t *ifofile) {
if(!ifofile)
return;
if(ifofile->vts_atrt) {
free(ifofile->vts_atrt->vts);
free(ifofile->vts_atrt->vts_atrt_offsets);
free(ifofile->vts_atrt);
ifofile->vts_atrt = 0;
}
}
int ifoRead_TXTDT_MGI(ifo_handle_t *ifofile) {
txtdt_mgi_t *txtdt_mgi;
if(!ifofile)
return 0;
if(!ifofile->vmgi_mat)
return 0;
/* Return successfully if there is nothing to read. */
if(ifofile->vmgi_mat->txtdt_mgi == 0)
return 1;
if(!DVDFileSeek_(ifofile->file,
ifofile->vmgi_mat->txtdt_mgi * DVD_BLOCK_LEN))
return 0;
txtdt_mgi = malloc(sizeof(txtdt_mgi_t));
if(!txtdt_mgi) {
return 0;
}
ifofile->txtdt_mgi = txtdt_mgi;
if(!(DVDReadBytes(ifofile->file, txtdt_mgi, TXTDT_MGI_SIZE))) {
fprintf(stderr, "libdvdread: Unable to read TXTDT_MGI.\n");
free(txtdt_mgi);
ifofile->txtdt_mgi = 0;
return 0;
}
// fprintf(stderr, "-- Not done yet --\n");
return 1;
}
void ifoFree_TXTDT_MGI(ifo_handle_t *ifofile) {
if(!ifofile)
return;
if(ifofile->txtdt_mgi) {
free(ifofile->txtdt_mgi);
ifofile->txtdt_mgi = 0;
}
}
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