diff options
Diffstat (limited to 'libdvdread-embedded/src/ifo_read.c')
| -rw-r--r-- | libdvdread-embedded/src/ifo_read.c | 2341 |
1 files changed, 2341 insertions, 0 deletions
diff --git a/libdvdread-embedded/src/ifo_read.c b/libdvdread-embedded/src/ifo_read.c new file mode 100644 index 0000000..6fd913d --- /dev/null +++ b/libdvdread-embedded/src/ifo_read.c @@ -0,0 +1,2341 @@ +/* + * Copyright (C) 2000, 2001, 2002, 2003 + * Björn Englund <d4bjorn@dtek.chalmers.se>, + * Håkan Hjort <d95hjort@dtek.chalmers.se> + * + * This file is part of libdvdread. + * + * libdvdread 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. + * + * libdvdread 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 libdvdread; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" + +#include <stdio.h> +#include <stdlib.h> +#include <inttypes.h> +#include <string.h> + +#include "bswap.h" +#include "dvdread/ifo_types.h" +#include "dvdread/ifo_read.h" +#include "dvdread/dvd_reader.h" +#include "dvdread_internal.h" +#include "dvdread/bitreader.h" + +#ifndef DVD_BLOCK_LEN +#define DVD_BLOCK_LEN 2048 +#endif + +#define PRIV(a) container_of(a, struct ifo_handle_private_s, handle) + +#define CHECK_VALUE(arg)\ + if(!(arg)) {\ + Log1(ifop->ctx, "CHECK_VALUE failed in %s:%i for %s",\ + __FILE__, __LINE__, # arg );\ + } + +#ifndef NDEBUG +static inline char * makehexdump(const uint8_t *p_CZ, size_t i_CZ) +{ + char *alloc = malloc(i_CZ * 2 + 1); + if(alloc) + { + *alloc = 0; + for(size_t i = 0; i < i_CZ; i++) + sprintf(&alloc[i*2], "%02x", *((uint8_t*)&p_CZ[i])); + } + return alloc; +} +#define CHECK_ZERO0(arg) \ + if(arg != 0) { \ + Log1(ifop->ctx, "Zero check failed in %s:%i\n for %s = 0x%x", \ + __FILE__, __LINE__, # arg, arg); \ + } +#define CHECK_ZERO(arg) \ + if(memcmp(my_friendly_zeros, &arg, sizeof(arg))) { \ + char *dump = makehexdump((const uint8_t *)&arg, sizeof(arg)); \ + Log0(ifop->ctx, "Zero check failed in %s:%i for %s : 0x%s", \ + __FILE__, __LINE__, # arg, dump ); \ + free(dump); \ + } +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 DVDFileSeekForce_( dvd_file_t *dvd_file, uint32_t offset, int force_size ) { + return (DVDFileSeekForce(dvd_file, (int)offset, force_size) == (int)offset); +} + +static inline int DVDFileSeek_( dvd_file_t *dvd_file, uint32_t offset ) { + return (DVDFileSeek(dvd_file, (int)offset) == (int)offset); +} + +static void read_video_attr(video_attr_t *va) { + getbits_state_t state; + uint8_t buf[sizeof(video_attr_t)]; + + memcpy(buf, va, sizeof(video_attr_t)); + if (!dvdread_getbits_init(&state, buf)) abort(); + va->mpeg_version = dvdread_getbits(&state, 2); + va->video_format = dvdread_getbits(&state, 2); + va->display_aspect_ratio = dvdread_getbits(&state, 2); + va->permitted_df = dvdread_getbits(&state, 2); + va->line21_cc_1 = dvdread_getbits(&state, 1); + va->line21_cc_2 = dvdread_getbits(&state, 1); + va->unknown1 = dvdread_getbits(&state, 1); + va->bit_rate = dvdread_getbits(&state, 1); + va->picture_size = dvdread_getbits(&state, 2); + va->letterboxed = dvdread_getbits(&state, 1); + va->film_mode = dvdread_getbits(&state, 1); +} + +static void read_audio_attr(audio_attr_t *aa) { + getbits_state_t state; + uint8_t buf[sizeof(audio_attr_t)]; + + memcpy(buf, aa, sizeof(audio_attr_t)); + if (!dvdread_getbits_init(&state, buf)) abort(); + aa->audio_format = dvdread_getbits(&state, 3); + aa->multichannel_extension = dvdread_getbits(&state, 1); + aa->lang_type = dvdread_getbits(&state, 2); + aa->application_mode = dvdread_getbits(&state, 2); + aa->quantization = dvdread_getbits(&state, 2); + aa->sample_frequency = dvdread_getbits(&state, 2); + aa->unknown1 = dvdread_getbits(&state, 1); + aa->channels = dvdread_getbits(&state, 3); + aa->lang_code = dvdread_getbits(&state, 16); + aa->lang_extension = dvdread_getbits(&state, 8); + aa->code_extension = dvdread_getbits(&state, 8); + aa->unknown3 = dvdread_getbits(&state, 8); + aa->app_info.karaoke.unknown4 = dvdread_getbits(&state, 1); + aa->app_info.karaoke.channel_assignment = dvdread_getbits(&state, 3); + aa->app_info.karaoke.version = dvdread_getbits(&state, 2); + aa->app_info.karaoke.mc_intro = dvdread_getbits(&state, 1); + aa->app_info.karaoke.mode = dvdread_getbits(&state, 1); +} + +static void read_multichannel_ext(multichannel_ext_t *me) { + getbits_state_t state; + uint8_t buf[sizeof(multichannel_ext_t)]; + + memcpy(buf, me, sizeof(multichannel_ext_t)); + if (!dvdread_getbits_init(&state, buf)) abort(); + me->zero1 = dvdread_getbits(&state, 7); + me->ach0_gme = dvdread_getbits(&state, 1); + me->zero2 = dvdread_getbits(&state, 7); + me->ach1_gme = dvdread_getbits(&state, 1); + me->zero3 = dvdread_getbits(&state, 4); + me->ach2_gv1e = dvdread_getbits(&state, 1); + me->ach2_gv2e = dvdread_getbits(&state, 1); + me->ach2_gm1e = dvdread_getbits(&state, 1); + me->ach2_gm2e = dvdread_getbits(&state, 1); + me->zero4 = dvdread_getbits(&state, 4); + me->ach3_gv1e = dvdread_getbits(&state, 1); + me->ach3_gv2e = dvdread_getbits(&state, 1); + me->ach3_gmAe = dvdread_getbits(&state, 1); + me->ach3_se2e = dvdread_getbits(&state, 1); + me->zero5 = dvdread_getbits(&state, 4); + me->ach4_gv1e = dvdread_getbits(&state, 1); + me->ach4_gv2e = dvdread_getbits(&state, 1); + me->ach4_gmBe = dvdread_getbits(&state, 1); + me->ach4_seBe = dvdread_getbits(&state, 1); +} + +static void read_subp_attr(subp_attr_t *sa) { + getbits_state_t state; + uint8_t buf[sizeof(subp_attr_t)]; + + memcpy(buf, sa, sizeof(subp_attr_t)); + if (!dvdread_getbits_init(&state, buf)) abort(); + sa->code_mode = dvdread_getbits(&state, 3); + sa->zero1 = dvdread_getbits(&state, 3); + sa->type = dvdread_getbits(&state, 2); + sa->zero2 = dvdread_getbits(&state, 8); + sa->lang_code = dvdread_getbits(&state, 16); + sa->lang_extension = dvdread_getbits(&state, 8); + sa->code_extension = dvdread_getbits(&state, 8); +} + +static void read_user_ops(user_ops_t *uo) { + getbits_state_t state; + uint8_t buf[sizeof(user_ops_t)]; + + memcpy(buf, uo, sizeof(user_ops_t)); + if (!dvdread_getbits_init(&state, buf)) abort(); + uo->zero = dvdread_getbits(&state, 7); + uo->video_pres_mode_change = dvdread_getbits(&state, 1); + uo->karaoke_audio_pres_mode_change = dvdread_getbits(&state, 1); + uo->angle_change = dvdread_getbits(&state, 1); + uo->subpic_stream_change = dvdread_getbits(&state, 1); + uo->audio_stream_change = dvdread_getbits(&state, 1); + uo->pause_on = dvdread_getbits(&state, 1); + uo->still_off = dvdread_getbits(&state, 1); + uo->button_select_or_activate = dvdread_getbits(&state, 1); + uo->resume = dvdread_getbits(&state, 1); + uo->chapter_menu_call = dvdread_getbits(&state, 1); + uo->angle_menu_call = dvdread_getbits(&state, 1); + uo->audio_menu_call = dvdread_getbits(&state, 1); + uo->subpic_menu_call = dvdread_getbits(&state, 1); + uo->root_menu_call = dvdread_getbits(&state, 1); + uo->title_menu_call = dvdread_getbits(&state, 1); + uo->backward_scan = dvdread_getbits(&state, 1); + uo->forward_scan = dvdread_getbits(&state, 1); + uo->next_pg_search = dvdread_getbits(&state, 1); + uo->prev_or_top_pg_search = dvdread_getbits(&state, 1); + uo->time_or_chapter_search = dvdread_getbits(&state, 1); + uo->go_up = dvdread_getbits(&state, 1); + uo->stop = dvdread_getbits(&state, 1); + uo->title_play = dvdread_getbits(&state, 1); + uo->chapter_search_or_play = dvdread_getbits(&state, 1); + uo->title_or_time_play = dvdread_getbits(&state, 1); +} + +static void read_pgci_srp(pgci_srp_t *ps) { + getbits_state_t state; + uint8_t buf[sizeof(pgci_srp_t)]; + + memcpy(buf, ps, sizeof(pgci_srp_t)); + if (!dvdread_getbits_init(&state, buf)) abort(); + ps->entry_id = dvdread_getbits(&state, 8); + ps->block_mode = dvdread_getbits(&state, 2); + ps->block_type = dvdread_getbits(&state, 2); + ps->zero_1 = dvdread_getbits(&state, 4); + ps->ptl_id_mask = dvdread_getbits(&state, 16); + ps->pgc_start_byte = dvdread_getbits(&state, 32); +} + +static void read_cell_playback(cell_playback_t *cp) { + getbits_state_t state; + uint8_t buf[sizeof(cell_playback_t)]; + + memcpy(buf, cp, sizeof(cell_playback_t)); + if (!dvdread_getbits_init(&state, buf)) abort(); + cp->block_mode = dvdread_getbits(&state, 2); + cp->block_type = dvdread_getbits(&state, 2); + cp->seamless_play = dvdread_getbits(&state, 1); + cp->interleaved = dvdread_getbits(&state, 1); + cp->stc_discontinuity = dvdread_getbits(&state, 1); + cp->seamless_angle = dvdread_getbits(&state, 1); + cp->zero_1 = dvdread_getbits(&state, 1); + cp->playback_mode = dvdread_getbits(&state, 1); + cp->restricted = dvdread_getbits(&state, 1); + cp->cell_type = dvdread_getbits(&state, 5); + cp->still_time = dvdread_getbits(&state, 8); + cp->cell_cmd_nr = dvdread_getbits(&state, 8); + + cp->playback_time.hour = dvdread_getbits(&state, 8); + cp->playback_time.minute = dvdread_getbits(&state, 8); + cp->playback_time.second = dvdread_getbits(&state, 8); + cp->playback_time.frame_u = dvdread_getbits(&state, 8); + + cp->first_sector = dvdread_getbits(&state, 32); + cp->first_ilvu_end_sector = dvdread_getbits(&state, 32); + cp->last_vobu_start_sector = dvdread_getbits(&state, 32); + cp->last_sector = dvdread_getbits(&state, 32); +} + +static void read_playback_type(playback_type_t *pt) { + getbits_state_t state; + uint8_t buf[sizeof(playback_type_t)]; + + memcpy(buf, pt, sizeof(playback_type_t)); + if (!dvdread_getbits_init(&state, buf)) abort(); + pt->zero_1 = dvdread_getbits(&state, 1); + pt->multi_or_random_pgc_title = dvdread_getbits(&state, 1); + pt->jlc_exists_in_cell_cmd = dvdread_getbits(&state, 1); + pt->jlc_exists_in_prepost_cmd = dvdread_getbits(&state, 1); + pt->jlc_exists_in_button_cmd = dvdread_getbits(&state, 1); + pt->jlc_exists_in_tt_dom = dvdread_getbits(&state, 1); + pt->chapter_search_or_play = dvdread_getbits(&state, 1); + pt->title_or_time_play = dvdread_getbits(&state, 1); +} + +static void free_ptl_mait(ptl_mait_t* ptl_mait, int num_entries) { + int i; + for (i = 0; i < num_entries; i++) + free(ptl_mait->countries[i].pf_ptl_mai); + + free(ptl_mait->countries); + free(ptl_mait); +} + +static ifo_handle_t *ifoOpenFileOrBackup(dvd_reader_t *ctx, int title, + int backup) { + struct ifo_handle_private_s *ifop; + dvd_read_domain_t domain = backup ? DVD_READ_INFO_BACKUP_FILE + : DVD_READ_INFO_FILE; + char ifo_filename[13]; + + ifop = calloc(1, sizeof(*ifop)); + if(!ifop) + return NULL; + + ifop->ctx = ctx; + ifop->file = DVDOpenFile(ctx, title, domain); + if(!ifop->file) + { + free(ifop); + return NULL; + } + + if (title) + snprintf(ifo_filename, 13, "VTS_%02d_0.%s", title, backup ? "BUP" : "IFO"); + else + snprintf(ifo_filename, 13, "VIDEO_TS.%s", backup ? "BUP" : "IFO"); + + if(!ifop->file) { + Log1(ctx, "Can't open file %s.", ifo_filename); + free(ifop); + return NULL; + } + + ifo_handle_t *ifofile = &ifop->handle; + /* 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)) + goto ifoOpen_fail; + + ifoRead_PGCI_UT(ifofile); + ifoRead_PTL_MAIT(ifofile); + + /* This is also mandatory. */ + if(!ifoRead_VTS_ATRT(ifofile)) + goto ifoOpen_fail; + + 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)) + goto ifoOpen_fail; + + 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)) + goto ifoOpen_fail; + + return ifofile; + } + +ifoOpen_fail: + Log1(ctx, "Invalid IFO for title %d (%s).", title, ifo_filename); + ifoClose(ifofile); + return NULL; +} + +static void ifoSetBupFlag(dvd_reader_t *ctx, int title) +{ + if(title > 63) + ctx->ifoBUPflags[0] |= 1 << (title - 64); + else + ctx->ifoBUPflags[1] |= 1 << title; +} + +static int ifoGetBupFlag(const dvd_reader_t *ctx, int title) +{ + int bupflag; + if(title > 63) + bupflag = !! (ctx->ifoBUPflags[0] & (1 << (title - 64))); + else + bupflag = !! (ctx->ifoBUPflags[1] & (1 << title)); + return bupflag; +} + +ifo_handle_t *ifoOpen(dvd_reader_t *ctx, int title) { + ifo_handle_t *ifofile; + int bupflag = ifoGetBupFlag(ctx, title); + + ifofile = ifoOpenFileOrBackup(ctx, title, bupflag); + if(!ifofile) /* Try backup */ + { + ifofile = ifoOpenFileOrBackup(ctx, title, 1); + if(ifofile && !bupflag) + ifoSetBupFlag(ctx, title); + } + return ifofile; +} + +ifo_handle_t *ifoOpenVMGI(dvd_reader_t *ctx) { + struct ifo_handle_private_s *ifop; + + for(int backup = ifoGetBupFlag(ctx, 0); backup <= 1; backup++) + { + ifop = calloc(1, sizeof(*ifop)); + if(!ifop) + return NULL; + + const dvd_read_domain_t domain = backup ? DVD_READ_INFO_BACKUP_FILE + : DVD_READ_INFO_FILE; + const char *ext = backup ? "BUP" : "IFO"; + + ifop->ctx = ctx; + ifop->file = DVDOpenFile(ctx, 0, domain); + if(!ifop->file) { /* Should really catch any error */ + Log1(ctx, "Can't open file VIDEO_TS.%s.", ext); + free(ifop); + return NULL; + } + + if(ifoRead_VMG(&ifop->handle)) + return &ifop->handle; + + Log1(ctx, "ifoOpenVMGI(): Invalid main menu IFO (VIDEO_TS.%s).", ext); + ifoClose(&ifop->handle); + } + return NULL; +} + + +ifo_handle_t *ifoOpenVTSI(dvd_reader_t *ctx, int title) { + struct ifo_handle_private_s *ifop; + + if(title <= 0 || title > 99) { + Log1(ctx, "ifoOpenVTSI invalid title (%d).", title); + return NULL; + } + + for(int backup = ifoGetBupFlag(ctx, title); backup <= 1; backup++) + { + ifop = calloc(1, sizeof(*ifop)); + if(!ifop) + return NULL; + + const dvd_read_domain_t domain = backup ? DVD_READ_INFO_BACKUP_FILE + : DVD_READ_INFO_FILE; + const char *ext = backup ? "BUP" : "IFO"; + ifop->ctx = ctx; + ifop->file = DVDOpenFile(ctx, title, domain); + /* Should really catch any error */ + if(!ifop->file) { + Log1(ctx, "Can't open file VTS_%02d_0.%s.", title, ext); + free(ifop); + continue; + } + + if(ifoRead_VTS(&ifop->handle) && ifop->handle.vtsi_mat) + return &ifop->handle; + + Log1(ctx, "Invalid IFO for title %d (VTS_%02d_0.%s).", + title, title, ext); + ifoClose(&ifop->handle); + } + + return NULL; +} + + +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); + ifoFree_VTS_TMAPT(ifofile); + + if(ifofile->vmgi_mat) + free(ifofile->vmgi_mat); + + if(ifofile->vtsi_mat) + free(ifofile->vtsi_mat); + + struct ifo_handle_private_s *ifop = PRIV(ifofile); + DVDCloseFile(ifop->file); + free(ifop); +} + + +static int ifoRead_VMG(ifo_handle_t *ifofile) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + vmgi_mat_t *vmgi_mat; + + vmgi_mat = calloc(1, sizeof(vmgi_mat_t)); + if(!vmgi_mat) + return 0; + + ifofile->vmgi_mat = vmgi_mat; + + if(!DVDFileSeek_(ifop->file, 0)) { + free(ifofile->vmgi_mat); + ifofile->vmgi_mat = NULL; + return 0; + } + + if(!DVDReadBytes(ifop->file, vmgi_mat, sizeof(vmgi_mat_t))) { + free(ifofile->vmgi_mat); + ifofile->vmgi_mat = NULL; + return 0; + } + + if(strncmp("DVDVIDEO-VMG", vmgi_mat->vmg_identifier, 12) != 0) { + free(ifofile->vmgi_mat); + ifofile->vmgi_mat = NULL; + 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); + read_video_attr(&vmgi_mat->vmgm_video_attr); + read_audio_attr(&vmgi_mat->vmgm_audio_attr); + read_subp_attr(&vmgi_mat->vmgm_subp_attr); + + + CHECK_ZERO(vmgi_mat->zero_1); + CHECK_ZERO(vmgi_mat->zero_2); + /* DVDs created by VDR-to-DVD device LG RC590M violate the following check with + * vmgi_mat->zero_3 = 0x00000000010000000000000000000000000000. */ + 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) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + vtsi_mat_t *vtsi_mat; + int i; + + vtsi_mat = calloc(1, sizeof(vtsi_mat_t)); + if(!vtsi_mat) + return 0; + + ifofile->vtsi_mat = vtsi_mat; + + if(!DVDFileSeek_(ifop->file, 0)) { + free(ifofile->vtsi_mat); + ifofile->vtsi_mat = NULL; + return 0; + } + + if(!(DVDReadBytes(ifop->file, vtsi_mat, sizeof(vtsi_mat_t)))) { + free(ifofile->vtsi_mat); + ifofile->vtsi_mat = NULL; + return 0; + } + + if(strncmp("DVDVIDEO-VTS", vtsi_mat->vts_identifier, 12) != 0) { + free(ifofile->vtsi_mat); + ifofile->vtsi_mat = NULL; + return 0; + } + + read_video_attr(&vtsi_mat->vtsm_video_attr); + read_video_attr(&vtsi_mat->vts_video_attr); + read_audio_attr(&vtsi_mat->vtsm_audio_attr); + for(i=0; i<8; i++) + read_audio_attr(&vtsi_mat->vts_audio_attr[i]); + read_subp_attr(&vtsi_mat->vtsm_subp_attr); + for(i=0; i<32; i++) + read_subp_attr(&vtsi_mat->vts_subp_attr[i]); + 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); + + + 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++) { + read_multichannel_ext(&vtsi_mat->vts_mu_audio_attr[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) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + if(!DVDFileSeek_(ifop->file, offset)) + return 0; + + if(!(DVDReadBytes(ifop->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); + B2N_16(cmd_tbl->last_byte); + + CHECK_VALUE(cmd_tbl->nr_of_pre + cmd_tbl->nr_of_post + cmd_tbl->nr_of_cell<= 255); + CHECK_VALUE((cmd_tbl->nr_of_pre + cmd_tbl->nr_of_post + cmd_tbl->nr_of_cell) * COMMAND_DATA_SIZE + + PGC_COMMAND_TBL_SIZE <= cmd_tbl->last_byte + 1); + + 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(ifop->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(ifop->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(ifop->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) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + unsigned int size = nr * sizeof(pgc_program_map_t); + + if(!DVDFileSeek_(ifop->file, offset)) + return 0; + + if(!(DVDReadBytes(ifop->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) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + unsigned int i; + unsigned int size = nr * sizeof(cell_playback_t); + + if(!DVDFileSeek_(ifop->file, offset)) + return 0; + + if(!(DVDReadBytes(ifop->file, cell_playback, size))) + return 0; + + for(i = 0; i < nr; i++) { + read_cell_playback(&cell_playback[i]); + /* 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) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + unsigned int i; + unsigned int size = nr * sizeof(cell_position_t); + + if(!DVDFileSeek_(ifop->file, offset)) + return 0; + + if(!(DVDReadBytes(ifop->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) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + unsigned int i; + + if(!DVDFileSeek_(ifop->file, offset)) + return 0; + + if(!(DVDReadBytes(ifop->file, pgc, PGC_SIZE))) + return 0; + + read_user_ops(&pgc->prohibited_ops); + 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 < 8; i++) + B2N_16(pgc->audio_control[i]); + for(i = 0; i < 32; i++) + B2N_32(pgc->subp_control[i]); + 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] & 0x8000)) /* The 'is present' bit */ + CHECK_ZERO(pgc->audio_control[i]); + for(i = 0; i < 32; i++) + if(!(pgc->subp_control[i] & 0x80000000)) /* The 'is present' bit */ + 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 = calloc(1, 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)) { + return 0; + } + } else { + pgc->command_tbl = NULL; + } + + if(pgc->program_map_offset != 0 && pgc->nr_of_programs>0) { + pgc->program_map = calloc(pgc->nr_of_programs, sizeof(pgc_program_map_t)); + if(!pgc->program_map) { + return 0; + } + if(!ifoRead_PGC_PROGRAM_MAP(ifofile, pgc->program_map,pgc->nr_of_programs, + offset + pgc->program_map_offset)) { + return 0; + } + } else { + pgc->program_map = NULL; + } + + if(pgc->cell_playback_offset != 0 && pgc->nr_of_cells>0) { + pgc->cell_playback = calloc(pgc->nr_of_cells, sizeof(cell_playback_t)); + if(!pgc->cell_playback) { + return 0; + } + if(!ifoRead_CELL_PLAYBACK_TBL(ifofile, pgc->cell_playback, + pgc->nr_of_cells, + offset + pgc->cell_playback_offset)) { + return 0; + } + } else { + pgc->cell_playback = NULL; + } + + if(pgc->cell_position_offset != 0 && pgc->nr_of_cells>0) { + pgc->cell_position = calloc(pgc->nr_of_cells, sizeof(cell_position_t)); + if(!pgc->cell_position) { + return 0; + } + if(!ifoRead_CELL_POSITION_TBL(ifofile, pgc->cell_position, + pgc->nr_of_cells, + offset + pgc->cell_position_offset)) { + 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 = NULL; + if(!ifofile->vmgi_mat->first_play_pgc) + return 1; + + ifofile->first_play_pgc = calloc(1, sizeof(pgc_t)); + if(!ifofile->first_play_pgc) + return 0; + + ifofile->first_play_pgc->ref_count = 1; + if(!ifoRead_PGC(ifofile, ifofile->first_play_pgc, + ifofile->vmgi_mat->first_play_pgc)) { + ifoFree_PGC(&ifofile->first_play_pgc); + return 0; + } + + return 1; +} + +static void ifoFree_PGC(pgc_t **pgc) { + if(pgc && *pgc && (--(*pgc)->ref_count) <= 0) { + 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); + free(*pgc); + } + if (pgc) { + *pgc = NULL; + } +} + +void ifoFree_FP_PGC(ifo_handle_t *ifofile) { + if(!ifofile) + return; + + if(ifofile->first_play_pgc) { + ifoFree_PGC(&ifofile->first_play_pgc); + } +} + + +int ifoRead_TT_SRPT(ifo_handle_t *ifofile) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + tt_srpt_t *tt_srpt; + unsigned int i; + size_t info_length; + + if(!ifofile) + return 0; + + if(!ifofile->vmgi_mat) + return 0; + + if(ifofile->vmgi_mat->tt_srpt == 0) /* mandatory */ + return 0; + + if(!DVDFileSeek_(ifop->file, ifofile->vmgi_mat->tt_srpt * DVD_BLOCK_LEN)) + return 0; + + tt_srpt = calloc(1, sizeof(tt_srpt_t)); + if(!tt_srpt) + return 0; + + ifofile->tt_srpt = tt_srpt; + + if(!(DVDReadBytes(ifop->file, tt_srpt, TT_SRPT_SIZE))) { + Log0(ifop->ctx, "Unable to read read TT_SRPT."); + free(tt_srpt); + return 0; + } + + B2N_16(tt_srpt->nr_of_srpts); + B2N_32(tt_srpt->last_byte); + + /* E-One releases don't fill this field */ + if(tt_srpt->last_byte == 0) { + tt_srpt->last_byte = tt_srpt->nr_of_srpts * sizeof(title_info_t) - 1 + TT_SRPT_SIZE; + } + info_length = tt_srpt->last_byte + 1 - TT_SRPT_SIZE; + + tt_srpt->title = calloc(1, info_length); + if(!tt_srpt->title) { + free(tt_srpt); + ifofile->tt_srpt = NULL; + return 0; + } + if(!(DVDReadBytes(ifop->file, tt_srpt->title, info_length))) { + Log0(ifop->ctx, "libdvdread: Unable to read read TT_SRPT."); + ifoFree_TT_SRPT(ifofile); + return 0; + } + + if(tt_srpt->nr_of_srpts>info_length/sizeof(title_info_t)){ + Log1(ifop->ctx, "data mismatch: info_length (%zd)!= nr_of_srpts (%d). Truncating.", + info_length/sizeof(title_info_t),tt_srpt->nr_of_srpts); + tt_srpt->nr_of_srpts=info_length/sizeof(title_info_t); + } + + 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(tt_srpt->nr_of_srpts * sizeof(title_info_t) <= info_length); + + for(i = 0; i < tt_srpt->nr_of_srpts; i++) { + read_playback_type(&tt_srpt->title[i].pb_ty); + 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))) { + Log1(ifop->ctx, "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); + ifofile->tt_srpt->title = NULL; + free(ifofile->tt_srpt); + ifofile->tt_srpt = NULL; + } +} + + +int ifoRead_VTS_PTT_SRPT(ifo_handle_t *ifofile) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + vts_ptt_srpt_t *vts_ptt_srpt = NULL; + int info_length, i, j; + uint32_t *data = NULL; + + if(!ifofile) + return 0; + + if(!ifofile->vtsi_mat) + return 0; + + if(ifofile->vtsi_mat->vts_ptt_srpt == 0) /* mandatory */ + return 0; + + if(!DVDFileSeek_(ifop->file, + ifofile->vtsi_mat->vts_ptt_srpt * DVD_BLOCK_LEN)) + return 0; + + vts_ptt_srpt = calloc(1, sizeof(vts_ptt_srpt_t)); + if(!vts_ptt_srpt) + return 0; + + vts_ptt_srpt->title = NULL; + ifofile->vts_ptt_srpt = vts_ptt_srpt; + + if(!(DVDReadBytes(ifop->file, vts_ptt_srpt, VTS_PTT_SRPT_SIZE))) { + Log0(ifop->ctx, "Unable to read PTT search table."); + goto fail; + } + + 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); /* ?? */ + + /* E-One releases don't fill this field */ + if(vts_ptt_srpt->last_byte == 0) { + vts_ptt_srpt->last_byte = vts_ptt_srpt->nr_of_srpts * sizeof(*data) - 1 + VTS_PTT_SRPT_SIZE; + } + info_length = vts_ptt_srpt->last_byte + 1 - VTS_PTT_SRPT_SIZE; + data = calloc(1, info_length); + if(!data) + goto fail; + + if(!(DVDReadBytes(ifop->file, data, info_length))) { + Log0(ifop->ctx, "Unable to read PTT search table."); + goto fail; + } + + if(vts_ptt_srpt->nr_of_srpts > info_length / sizeof(*data)) { + Log0(ifop->ctx, "PTT search table too small."); + goto fail; + } + + if(vts_ptt_srpt->nr_of_srpts == 0) { + Log0(ifop->ctx, "Zero entries in PTT search table."); + goto fail; + } + + for(i = 0; i < vts_ptt_srpt->nr_of_srpts; i++) { + /* Transformers 3 has PTT start bytes that point outside the SRPT PTT */ + uint32_t start = data[i]; + B2N_32(start); + if(start + sizeof(ptt_info_t) > vts_ptt_srpt->last_byte + 1) { + /* don't mess with any bytes beyond the end of the allocation */ + vts_ptt_srpt->nr_of_srpts = i; + break; + } + data[i] = start; + /* 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 = calloc(vts_ptt_srpt->nr_of_srpts, sizeof(ttu_t)); + if(!vts_ptt_srpt->title) + goto fail; + + 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; + + /* DVDs created by the VDR-to-DVD device LG RC590M violate the following requirement */ + CHECK_VALUE(n % 4 == 0); + + vts_ptt_srpt->title[i].nr_of_ptts = n / 4; + vts_ptt_srpt->title[i].ptt = calloc(n / 4, sizeof(ptt_info_t)); + if(!vts_ptt_srpt->title[i].ptt) { + for(n = 0; n < i; n++) + free(vts_ptt_srpt->title[n].ptt); + + goto fail; + } + 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); /* ?? */ + //don't abort here. E-One DVDs contain PTT with pgcn or pgn == 0 + } + } + + return 1; + +fail: + free(data); + ifofile->vts_ptt_srpt = NULL; + free(vts_ptt_srpt->title); + free(vts_ptt_srpt); + return 0; +} + + +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) { + struct ifo_handle_private_s *ifop = PRIV(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) + return 1; + + if(!DVDFileSeek_(ifop->file, ifofile->vmgi_mat->ptl_mait * DVD_BLOCK_LEN)) + return 0; + + ptl_mait = calloc(1, sizeof(ptl_mait_t)); + if(!ptl_mait) + return 0; + + ifofile->ptl_mait = ptl_mait; + + if(!(DVDReadBytes(ifop->file, ptl_mait, PTL_MAIT_SIZE))) { + free(ptl_mait); + ifofile->ptl_mait = NULL; + 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 = calloc(1, info_length); + if(!ptl_mait->countries) { + free(ptl_mait); + ifofile->ptl_mait = NULL; + return 0; + } + for(i = 0; i < ptl_mait->nr_of_countries; i++) { + ptl_mait->countries[i].pf_ptl_mai = NULL; + } + + for(i = 0; i < ptl_mait->nr_of_countries; i++) { + if(!(DVDReadBytes(ifop->file, &ptl_mait->countries[i], PTL_MAIT_COUNTRY_SIZE))) { + Log0(ifop->ctx, "Unable to read PTL_MAIT."); + free(ptl_mait->countries); + free(ptl_mait); + ifofile->ptl_mait = NULL; + 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 + + sizeof(pf_level_t) * (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_(ifop->file, + ifofile->vmgi_mat->ptl_mait * DVD_BLOCK_LEN + + ptl_mait->countries[i].pf_ptl_mai_start_byte)) { + Log0(ifop->ctx, "Unable to seek PTL_MAIT table at index %d.",i); + free(ptl_mait->countries); + free(ptl_mait); + ifofile->ptl_mait = NULL; + return 0; + } + info_length = (ptl_mait->nr_of_vtss + 1) * sizeof(pf_level_t); + pf_temp = calloc(1, info_length); + if(!pf_temp) { + free_ptl_mait(ptl_mait, i); + ifofile->ptl_mait = NULL; + return 0; + } + if(!(DVDReadBytes(ifop->file, pf_temp, info_length))) { + Log0(ifop->ctx, "Unable to read PTL_MAIT table at index %d.",i); + free(pf_temp); + free_ptl_mait(ptl_mait, i); + ifofile->ptl_mait = NULL; + return 0; + } + for (j = 0; j < ((ptl_mait->nr_of_vtss + 1U) * 8U); j++) { + B2N_16(pf_temp[j]); + } + ptl_mait->countries[i].pf_ptl_mai = calloc(1, info_length); + if(!ptl_mait->countries[i].pf_ptl_mai) { + free(pf_temp); + free_ptl_mait(ptl_mait, i); + ifofile->ptl_mait = NULL; + return 0; + } + { /* Transpose the array so we can use C indexing. */ + int level, vts; + for(level = 0; level < PTL_MAIT_NUM_LEVEL; 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) { + if(!ifofile) + return; + + if(ifofile->ptl_mait) { + unsigned int i; + + 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 = NULL; + } +} + +int ifoRead_VTS_TMAPT(ifo_handle_t *ifofile) { + struct ifo_handle_private_s *ifop = PRIV(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) { + ifofile->vts_tmapt = NULL; + return 1; + } + + offset = ifofile->vtsi_mat->vts_tmapt * DVD_BLOCK_LEN; + + if(!DVDFileSeek_(ifop->file, offset)) + return 0; + + vts_tmapt = calloc(1, sizeof(vts_tmapt_t)); + if(!vts_tmapt) + return 0; + + ifofile->vts_tmapt = vts_tmapt; + + if(!(DVDReadBytes(ifop->file, vts_tmapt, VTS_TMAPT_SIZE))) { + Log0(ifop->ctx, "Unable to read VTS_TMAPT."); + 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 = calloc(1, info_length); + if(!vts_tmap_srp) { + free(vts_tmapt); + ifofile->vts_tmapt = NULL; + return 0; + } + + vts_tmapt->tmap_offset = vts_tmap_srp; + + if(!(DVDReadBytes(ifop->file, vts_tmap_srp, info_length))) { + Log0(ifop->ctx, "Unable to read VTS_TMAPT."); + 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 = calloc(1, info_length); + if(!vts_tmapt->tmap) { + free(vts_tmap_srp); + free(vts_tmapt); + ifofile->vts_tmapt = NULL; + return 0; + } + + for(i = 0; i < vts_tmapt->nr_of_tmaps; i++) { + if(!DVDFileSeek_(ifop->file, offset + vts_tmap_srp[i])) { + ifoFree_VTS_TMAPT(ifofile); + return 0; + } + + if(!(DVDReadBytes(ifop->file, &vts_tmapt->tmap[i], VTS_TMAP_SIZE))) { + Log0(ifop->ctx, "Unable to read VTS_TMAP."); + 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 = calloc(1, info_length); + if(!vts_tmapt->tmap[i].map_ent) { + ifoFree_VTS_TMAPT(ifofile); + return 0; + } + + if(!(DVDReadBytes(ifop->file, vts_tmapt->tmap[i].map_ent, info_length))) { + Log0(ifop->ctx, "Unable to read VTS_TMAP_ENT."); + 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) { + if(!ifofile) + return; + + if(ifofile->vts_tmapt) { + unsigned int i; + + 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 = calloc(1, 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 = NULL; + 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 = calloc(1, 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 = NULL; + return 0; + } + + return 1; +} + +static int ifoRead_C_ADT_internal(ifo_handle_t *ifofile, + c_adt_t *c_adt, unsigned int sector) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + size_t i, info_length; + + if(!DVDFileSeek_(ifop->file, sector * DVD_BLOCK_LEN)) + return 0; + + if(!(DVDReadBytes(ifop->file, c_adt, C_ADT_SIZE))) + return 0; + + B2N_16(c_adt->nr_of_vobs); + B2N_32(c_adt->last_byte); + + if(c_adt->last_byte + 1 < C_ADT_SIZE) + return 0; + + 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) { + Log1(ifop->ctx, "C_ADT nr_of_vobs > available info entries"); + c_adt->nr_of_vobs = info_length / sizeof(cell_adr_t); + } + + c_adt->cell_adr_table = calloc(1, info_length); + if(!c_adt->cell_adr_table) + return 0; + + if(info_length && + !(DVDReadBytes(ifop->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 = NULL; +} + +void ifoFree_TITLE_C_ADT(ifo_handle_t *ifofile) { + if(!ifofile) + return; + + ifoFree_C_ADT_internal(ifofile->vts_c_adt); + ifofile->vts_c_adt = NULL; +} + +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 = calloc(1, 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 = NULL; + 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 = calloc(1, 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 = NULL; + return 0; + } + + return 1; +} + +static int ifoRead_VOBU_ADMAP_internal(ifo_handle_t *ifofile, + vobu_admap_t *vobu_admap, + unsigned int sector) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + unsigned int i; + int info_length; + + if(!DVDFileSeekForce_(ifop->file, sector * DVD_BLOCK_LEN, sector)) + return 0; + + if(!(DVDReadBytes(ifop->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 = calloc(1, info_length); + if(!vobu_admap->vobu_start_sectors) { + return 0; + } + if(info_length && + !(DVDReadBytes(ifop->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 = NULL; +} + +void ifoFree_TITLE_VOBU_ADMAP(ifo_handle_t *ifofile) { + if(!ifofile) + return; + + ifoFree_VOBU_ADMAP_internal(ifofile->vts_vobu_admap); + ifofile->vts_vobu_admap = NULL; +} + +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 = calloc(1, sizeof(pgcit_t)); + if(!ifofile->vts_pgcit) + return 0; + + ifofile->vts_pgcit->ref_count = 1; + if(!ifoRead_PGCIT_internal(ifofile, ifofile->vts_pgcit, + ifofile->vtsi_mat->vts_pgcit * DVD_BLOCK_LEN)) { + free(ifofile->vts_pgcit); + ifofile->vts_pgcit = NULL; + return 0; + } + + return 1; +} + +static int find_dup_pgc(pgci_srp_t *pgci_srp, uint32_t start_byte, int count) { + int i; + + for(i = 0; i < count; i++) { + if(pgci_srp[i].pgc_start_byte == start_byte) { + return i; + } + } + return -1; +} + +static int ifoRead_PGCIT_internal(ifo_handle_t *ifofile, pgcit_t *pgcit, + unsigned int offset) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + int i, info_length; + uint8_t *data, *ptr; + + if(!DVDFileSeek_(ifop->file, offset)) + return 0; + + if(!(DVDReadBytes(ifop->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 */ + + if (pgcit->nr_of_pgci_srp == 0) { + pgcit->pgci_srp = NULL; + return 1; + } + + info_length = pgcit->nr_of_pgci_srp * PGCI_SRP_SIZE; + data = calloc(1, info_length); + if(!data) + return 0; + + if(info_length && !(DVDReadBytes(ifop->file, data, info_length))) { + free(data); + return 0; + } + + pgcit->pgci_srp = calloc(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_SRP_SIZE); + ptr += PGCI_SRP_SIZE; + read_pgci_srp(&pgcit->pgci_srp[i]); + CHECK_VALUE(pgcit->pgci_srp[i].zero_1 == 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++) { + int dup; + if((dup = find_dup_pgc(pgcit->pgci_srp, pgcit->pgci_srp[i].pgc_start_byte, i)) >= 0) { + pgcit->pgci_srp[i].pgc = pgcit->pgci_srp[dup].pgc; + pgcit->pgci_srp[i].pgc->ref_count++; + continue; + } + pgcit->pgci_srp[i].pgc = calloc(1, sizeof(pgc_t)); + if(!pgcit->pgci_srp[i].pgc) { + int j; + for(j = 0; j < i; j++) { + ifoFree_PGC(&pgcit->pgci_srp[j].pgc); + } + goto fail; + } + pgcit->pgci_srp[i].pgc->ref_count = 1; + if(!ifoRead_PGC(ifofile, pgcit->pgci_srp[i].pgc, + offset + pgcit->pgci_srp[i].pgc_start_byte)) { + Log0(ifop->ctx, "Unable to read invalid PCG"); + //E-One releases provide bogus PGC, ie: out of bound start_byte + free(pgcit->pgci_srp[i].pgc); + pgcit->pgci_srp[i].pgc = NULL; + } + } + + return 1; +fail: + free(pgcit->pgci_srp); + pgcit->pgci_srp = NULL; + return 0; +} + +static void ifoFree_PGCIT_internal(pgcit_t **pgcit) { + if(pgcit && *pgcit && (--(*pgcit)->ref_count <= 0)) { + int i; + for(i = 0; i < (*pgcit)->nr_of_pgci_srp; i++) + { + ifoFree_PGC(&(*pgcit)->pgci_srp[i].pgc); + } + free((*pgcit)->pgci_srp); + free(*pgcit); + } + if (pgcit) + *pgcit = NULL; +} + +void ifoFree_PGCIT(ifo_handle_t *ifofile) { + if(!ifofile) + return; + + if(ifofile->vts_pgcit) { + ifoFree_PGCIT_internal(&ifofile->vts_pgcit); + } +} + +static int find_dup_lut(pgci_lu_t *lu, uint32_t start_byte, int count) { + int i; + + for(i = 0; i < count; i++) { + if(lu[i].lang_start_byte == start_byte) { + return i; + } + } + return -1; +} + +int ifoRead_PGCI_UT(ifo_handle_t *ifofile) { + struct ifo_handle_private_s *ifop = PRIV(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 = calloc(1, sizeof(pgci_ut_t)); + if(!ifofile->pgci_ut) + return 0; + + if(!DVDFileSeek_(ifop->file, sector * DVD_BLOCK_LEN)) { + free(ifofile->pgci_ut); + ifofile->pgci_ut = NULL; + return 0; + } + + if(!(DVDReadBytes(ifop->file, ifofile->pgci_ut, PGCI_UT_SIZE))) { + free(ifofile->pgci_ut); + ifofile->pgci_ut = NULL; + 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 = calloc(1, info_length); + if(!data) { + free(pgci_ut); + ifofile->pgci_ut = NULL; + return 0; + } + if(!(DVDReadBytes(ifop->file, data, info_length))) { + free(data); + free(pgci_ut); + ifofile->pgci_ut = NULL; + return 0; + } + + pgci_ut->lu = calloc(pgci_ut->nr_of_lus, sizeof(pgci_lu_t)); + if(!pgci_ut->lu) { + free(data); + free(pgci_ut); + ifofile->pgci_ut = NULL; + 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++) { + int dup; + if((dup = find_dup_lut(pgci_ut->lu, pgci_ut->lu[i].lang_start_byte, i)) >= 0) { + pgci_ut->lu[i].pgcit = pgci_ut->lu[dup].pgcit; + pgci_ut->lu[i].pgcit->ref_count++; + continue; + } + pgci_ut->lu[i].pgcit = calloc(1, 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); + free(pgci_ut); + ifofile->pgci_ut = NULL; + return 0; + } + pgci_ut->lu[i].pgcit->ref_count = 1; + 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); + free(pgci_ut); + ifofile->pgci_ut = NULL; + 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) { + if(!ifofile) + return; + + if(ifofile->pgci_ut) { + unsigned int i; + + 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); + free(ifofile->pgci_ut); + ifofile->pgci_ut = NULL; + } +} + +static int ifoRead_VTS_ATTRIBUTES(ifo_handle_t *ifofile, + vts_attributes_t *vts_attributes, + unsigned int offset) { + struct ifo_handle_private_s *ifop = PRIV(ifofile); + unsigned int i; + + if(!DVDFileSeek_(ifop->file, offset)) + return 0; + + if(!(DVDReadBytes(ifop->file, vts_attributes, sizeof(vts_attributes_t)))) + return 0; + + read_video_attr(&vts_attributes->vtsm_vobs_attr); + read_video_attr(&vts_attributes->vtstt_vobs_video_attr); + read_audio_attr(&vts_attributes->vtsm_audio_attr); + for(i=0; i<8; i++) + read_audio_attr(&vts_attributes->vtstt_audio_attr[i]); + read_subp_attr(&vts_attributes->vtsm_subp_attr); + for(i=0; i<32; i++) + read_subp_attr(&vts_attributes->vtstt_subp_attr[i]); + B2N_32(vts_attributes->last_byte); + B2N_32(vts_attributes->vts_cat); + + 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) { + struct ifo_handle_private_s *ifop = PRIV(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_(ifop->file, sector * DVD_BLOCK_LEN)) + return 0; + + vts_atrt = calloc(1, sizeof(vts_atrt_t)); + if(!vts_atrt) + return 0; + + ifofile->vts_atrt = vts_atrt; + + if(!(DVDReadBytes(ifop->file, vts_atrt, VTS_ATRT_SIZE))) { + free(vts_atrt); + ifofile->vts_atrt = NULL; + 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 = calloc(1, info_length); + if(!data) { + free(vts_atrt); + ifofile->vts_atrt = NULL; + return 0; + } + + vts_atrt->vts_atrt_offsets = data; + + if(!(DVDReadBytes(ifop->file, data, info_length))) { + free(data); + free(vts_atrt); + ifofile->vts_atrt = NULL; + 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 = calloc(1, info_length); + if(!vts_atrt->vts) { + free(data); + free(vts_atrt); + ifofile->vts_atrt = NULL; + 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 = NULL; + return 0; + } + + /* This assert can't 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 = NULL; + } +} + + +int ifoRead_TXTDT_MGI(ifo_handle_t *ifofile) { + struct ifo_handle_private_s *ifop = PRIV(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_(ifop->file, + ifofile->vmgi_mat->txtdt_mgi * DVD_BLOCK_LEN)) + return 0; + + txtdt_mgi = calloc(1, sizeof(txtdt_mgi_t)); + if(!txtdt_mgi) { + return 0; + } + ifofile->txtdt_mgi = txtdt_mgi; + + if(!(DVDReadBytes(ifop->file, txtdt_mgi, TXTDT_MGI_SIZE))) { + Log0(ifop->ctx, "Unable to read TXTDT_MGI."); + free(txtdt_mgi); + ifofile->txtdt_mgi = NULL; + return 0; + } + + /* Log1(ifop->ctx, "-- 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 = NULL; + } +} |