diff options
Diffstat (limited to 'dvdread/ifo_read.c')
-rw-r--r-- | dvdread/ifo_read.c | 2022 |
1 files changed, 2022 insertions, 0 deletions
diff --git a/dvdread/ifo_read.c b/dvdread/ifo_read.c new file mode 100644 index 0000000000..8ad7baeea1 --- /dev/null +++ b/dvdread/ifo_read.c @@ -0,0 +1,2022 @@ +/* + * Copyright (C) 2000, 2001, 2002, 2003 + * Björn Englund <d4bjorn@dtek.chalmers.se>, + * Håkan Hjort <d95hjort@dtek.chalmers.se> + * + * Modified for use with MPlayer, changes contained in libdvdread_changes.diff. + * detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/ + * $Id$ + * + * 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 |