nkeynes@138: /** nkeynes@468: * $Id: nrg.c,v 1.7 2007-10-28 07:23:46 nkeynes Exp $ nkeynes@138: * nkeynes@138: * Nero (NRG) CD file format. File information stolen shamelessly from nkeynes@138: * libcdio. nkeynes@138: * nkeynes@138: * Copyright (c) 2005 Nathan Keynes. nkeynes@138: * nkeynes@138: * This program is free software; you can redistribute it and/or modify nkeynes@138: * it under the terms of the GNU General Public License as published by nkeynes@138: * the Free Software Foundation; either version 2 of the License, or nkeynes@138: * (at your option) any later version. nkeynes@138: * nkeynes@138: * This program is distributed in the hope that it will be useful, nkeynes@138: * but WITHOUT ANY WARRANTY; without even the implied warranty of nkeynes@138: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the nkeynes@138: * GNU General Public License for more details. nkeynes@138: */ nkeynes@138: nkeynes@138: #include nkeynes@138: #include nkeynes@138: #include nkeynes@514: #include nkeynes@138: #include "gdrom/gdrom.h" nkeynes@138: #include "dream.h" nkeynes@138: nkeynes@168: static gboolean nrg_image_is_valid( FILE *f ); nkeynes@168: static gdrom_disc_t nrg_image_open( const gchar *filename, FILE *f ); nkeynes@168: nkeynes@168: struct gdrom_image_class nrg_image_class = { "Nero", "nrg", nkeynes@168: nrg_image_is_valid, nrg_image_open }; nkeynes@168: nkeynes@138: #define NERO_V55_ID 0x4e455235 nkeynes@138: #define NERO_V50_ID 0x4e45524f nkeynes@138: nkeynes@138: /* Courtesy of libcdio */ nkeynes@138: /* 5.0 or earlier */ nkeynes@138: #define NERO_ID 0x4e45524f /* Nero pre 5.5.x */ nkeynes@138: #define CUES_ID 0x43554553 /* Nero pre version 5.5.x-6.x */ nkeynes@138: #define DAOI_ID 0x44414f49 nkeynes@138: #define ETNF_ID 0x45544e46 nkeynes@138: #define SINF_ID 0x53494e46 /* Session information */ nkeynes@138: #define END_ID 0x454e4421 nkeynes@138: /* 5.5+ only */ nkeynes@138: #define NER5_ID 0x4e455235 /* Nero version 5.5.x */ nkeynes@138: #define CDTX_ID 0x43445458 /* CD TEXT */ nkeynes@138: #define CUEX_ID 0x43554558 /* Nero version 5.5.x-6.x */ nkeynes@138: #define DAOX_ID 0x44414f58 /* Nero version 5.5.x-6.x */ nkeynes@138: #define ETN2_ID 0x45544e32 nkeynes@138: #define MTYP_ID 0x4d545950 /* Disc Media type? */ nkeynes@138: nkeynes@138: nkeynes@138: union nrg_footer { nkeynes@138: struct nrg_footer_v50 { nkeynes@138: uint32_t dummy; nkeynes@138: uint32_t id; nkeynes@138: uint32_t offset; nkeynes@138: } v50; nkeynes@138: struct nrg_footer_v55 { nkeynes@138: uint32_t id; nkeynes@138: uint64_t offset; nkeynes@138: } v55; nkeynes@138: }; nkeynes@138: nkeynes@138: struct nrg_chunk { nkeynes@138: uint32_t id; nkeynes@138: uint32_t length; nkeynes@138: }; nkeynes@138: nkeynes@138: struct nrg_etnf { nkeynes@138: uint32_t offset; nkeynes@138: uint32_t length; nkeynes@138: uint32_t mode; nkeynes@138: uint32_t lba; nkeynes@138: uint32_t padding; nkeynes@138: }; nkeynes@138: nkeynes@514: struct nrg_etn2 { nkeynes@514: uint64_t offset; nkeynes@514: uint64_t length; nkeynes@514: uint32_t mode; nkeynes@514: uint32_t lba; nkeynes@514: uint64_t padding; nkeynes@514: }; nkeynes@514: nkeynes@138: struct nrg_cues { nkeynes@138: uint8_t type; nkeynes@138: uint8_t track; nkeynes@138: uint8_t control; nkeynes@138: uint8_t pad; nkeynes@138: uint32_t addr; nkeynes@138: }; nkeynes@138: nkeynes@138: struct nrg_daoi { nkeynes@138: uint32_t length; nkeynes@138: char mcn[14]; nkeynes@138: uint8_t disc_mode; nkeynes@138: uint8_t unknown[2]; /* always 01 01? */ nkeynes@138: uint8_t track_count; nkeynes@138: struct nrg_daoi_track { nkeynes@138: char unknown[10]; nkeynes@138: uint32_t sector_size __attribute__((packed)); /* Always 0? */ nkeynes@138: uint8_t mode; nkeynes@138: uint8_t unknown2[3]; /* Always 00 00 01? */ nkeynes@138: uint32_t pregap __attribute__((packed)); nkeynes@138: uint32_t offset __attribute__((packed)); nkeynes@138: uint32_t end __attribute__((packed)); nkeynes@138: } track[0]; nkeynes@138: } __attribute__((packed)); nkeynes@138: nkeynes@514: struct nrg_daox { nkeynes@514: uint32_t length; nkeynes@514: char mcn[14]; nkeynes@514: uint8_t disc_mode; nkeynes@514: uint8_t unknown[2]; /* always 01 01? */ nkeynes@514: uint8_t track_count; nkeynes@514: struct nrg_daox_track { nkeynes@514: char unknown[10]; nkeynes@514: uint32_t sector_size __attribute__((packed)); /* Always 0? */ nkeynes@514: uint8_t mode; nkeynes@514: uint8_t unknown2[3]; /* Always 00 00 01? */ nkeynes@514: uint64_t pregap __attribute__((packed)); nkeynes@514: uint64_t offset __attribute__((packed)); nkeynes@514: uint64_t end __attribute__((packed)); nkeynes@514: } track[0]; nkeynes@514: } __attribute__((packed)); nkeynes@514: nkeynes@138: /** nkeynes@138: * Convert an 8-bit BCD number to normal integer form. nkeynes@138: * Eg, 0x79 => 79 nkeynes@138: */ nkeynes@138: uint8_t static bcd_to_uint8( uint8_t bcd ) nkeynes@138: { nkeynes@138: return (bcd & 0x0F) + (((bcd & 0xF0)>>4)*10); nkeynes@138: } nkeynes@138: nkeynes@138: nkeynes@138: /** nkeynes@138: * Convert a 32 bit MSF address (BCD coded) to the nkeynes@138: * equivalent LBA form. nkeynes@138: * Eg, 0x nkeynes@138: */ nkeynes@138: uint32_t static msf_to_lba( uint32_t msf ) nkeynes@138: { nkeynes@514: msf = GUINT32_FROM_BE(msf); nkeynes@138: int f = bcd_to_uint8(msf); nkeynes@138: int s = bcd_to_uint8(msf>>8); nkeynes@138: int m = bcd_to_uint8(msf>>16); nkeynes@138: return (m * 60 + s) * 75 + f; nkeynes@138: nkeynes@138: } nkeynes@138: nkeynes@138: uint32_t static nrg_track_mode( uint8_t mode ) nkeynes@138: { nkeynes@138: switch( mode ) { nkeynes@138: case 0: return GDROM_MODE1; nkeynes@138: case 2: return GDROM_MODE2_XA1; nkeynes@138: case 3: return GDROM_MODE2; nkeynes@138: case 7: return GDROM_CDDA; nkeynes@138: default: nkeynes@138: ERROR( "Unrecognized track mode %d in Nero image", mode ); nkeynes@138: return -1; nkeynes@138: } nkeynes@138: } nkeynes@138: nkeynes@168: static gboolean nrg_image_is_valid( FILE *f ) nkeynes@138: { nkeynes@168: union nrg_footer footer; nkeynes@168: nkeynes@168: fseek( f, -12, SEEK_END ); nkeynes@168: fread( &footer, sizeof(footer), 1, f ); nkeynes@514: if( GUINT32_FROM_BE(footer.v50.id) == NERO_V50_ID || nkeynes@514: GUINT32_FROM_BE(footer.v55.id) == NERO_V55_ID ) { nkeynes@168: return TRUE; nkeynes@168: } else { nkeynes@168: return FALSE; nkeynes@168: } nkeynes@168: } nkeynes@168: nkeynes@168: static gdrom_disc_t nrg_image_open( const gchar *filename, FILE *f ) nkeynes@168: { nkeynes@138: union nrg_footer footer; nkeynes@138: struct nrg_chunk chunk; nkeynes@138: struct nrg_daoi *dao; nkeynes@514: struct nrg_daox *daox; nkeynes@514: struct nrg_etnf *etnf; nkeynes@514: struct nrg_etn2 *etn2; nkeynes@138: gdrom_disc_t disc; nkeynes@342: gdrom_image_t image; nkeynes@138: gboolean end = FALSE; nkeynes@514: uint32_t chunk_id; nkeynes@138: int session_id = 0; nkeynes@138: int session_track_id = 0; nkeynes@138: int track_id = 0; nkeynes@138: int cue_track_id = 0, cue_track_count = 0; nkeynes@514: int i, count; nkeynes@138: nkeynes@138: fseek( f, -12, SEEK_END ); nkeynes@138: fread( &footer, sizeof(footer), 1, f ); nkeynes@514: if( GUINT32_FROM_BE(footer.v50.id) == NERO_V50_ID ) { nkeynes@138: INFO( "Loading Nero 5.0 image" ); nkeynes@514: fseek( f, GUINT32_FROM_BE(footer.v50.offset), SEEK_SET ); nkeynes@514: } else if( GUINT32_FROM_BE(footer.v55.id) == NERO_V55_ID ) { nkeynes@138: INFO( "Loading Nero 5.5+ image" ); nkeynes@514: fseek( f, (uint32_t)GUINT64_FROM_BE(footer.v55.offset), SEEK_SET ); nkeynes@138: } else { nkeynes@168: /* Not a (recognized) Nero image */ nkeynes@138: return NULL; nkeynes@138: } nkeynes@138: nkeynes@464: disc = gdrom_image_new(filename, f); nkeynes@138: if( disc == NULL ) { nkeynes@138: ERROR("Unable to allocate memory!"); nkeynes@138: return NULL; nkeynes@138: } nkeynes@342: image = (gdrom_image_t)disc; nkeynes@138: nkeynes@138: do { nkeynes@138: fread( &chunk, sizeof(chunk), 1, f ); nkeynes@514: chunk.length = GUINT32_FROM_BE(chunk.length); nkeynes@138: char data[chunk.length]; nkeynes@138: fread( data, chunk.length, 1, f ); nkeynes@514: chunk_id = GUINT32_FROM_BE(chunk.id); nkeynes@514: switch( chunk_id ) { nkeynes@138: case CUES_ID: nkeynes@514: case CUEX_ID: nkeynes@138: cue_track_id = track_id; nkeynes@138: cue_track_count = ((chunk.length / sizeof(struct nrg_cues)) >> 1) - 1; nkeynes@138: track_id += cue_track_count; nkeynes@138: for( i=0; iaddr ) + GDROM_PREGAP; nkeynes@514: } else { nkeynes@514: lba = msf_to_lba( cue->addr ); nkeynes@514: } nkeynes@138: if( cue->track == 0 ) nkeynes@138: continue; /* Track 0. Leadin? always 0? */ nkeynes@138: if( cue->track == 0xAA ) { /* end of disc */ nkeynes@342: image->track[track_id-1].sector_count = nkeynes@514: lba - image->track[track_id-1].lba; nkeynes@138: } else { nkeynes@138: track = cue_track_id + bcd_to_uint8(cue->track) - 1; nkeynes@138: if( (cue->control & 0x01) == 0 ) { nkeynes@138: /* Pre-gap address. */ nkeynes@138: if( track != 0 ) { nkeynes@342: image->track[track-1].sector_count = nkeynes@514: lba - image->track[track-1].lba; nkeynes@138: } nkeynes@138: } else { /* Track-start address */ nkeynes@514: image->track[track].lba = lba; nkeynes@342: image->track[track].flags = cue->type; nkeynes@138: } nkeynes@138: } nkeynes@138: } nkeynes@138: break; nkeynes@138: case DAOI_ID: nkeynes@138: dao = (struct nrg_daoi *)data; nkeynes@342: memcpy( image->mcn, dao->mcn, 13 ); nkeynes@342: image->mcn[13] = '\0'; nkeynes@138: assert( dao->track_count * 30 + 22 == chunk.length ); nkeynes@138: assert( dao->track_count == cue_track_count ); nkeynes@138: for( i=0; itrack_count; i++ ) { nkeynes@514: image->track[cue_track_id].sector_size = GUINT32_FROM_BE(dao->track[i].sector_size); nkeynes@514: image->track[cue_track_id].offset = GUINT32_FROM_BE(dao->track[i].offset); nkeynes@342: image->track[cue_track_id].mode = nrg_track_mode( dao->track[i].mode ); nkeynes@342: image->track[cue_track_id].sector_count = nkeynes@514: (GUINT32_FROM_BE(dao->track[i].end) - GUINT32_FROM_BE(dao->track[i].offset))/ nkeynes@514: GUINT32_FROM_BE(dao->track[i].sector_size); nkeynes@138: cue_track_id++; nkeynes@138: } nkeynes@138: break; nkeynes@514: case DAOX_ID: nkeynes@514: daox = (struct nrg_daox *)data; nkeynes@514: memcpy( image->mcn, daox->mcn, 13 ); nkeynes@514: image->mcn[13] = '\0'; nkeynes@514: assert( daox->track_count * 42 + 22 == chunk.length ); nkeynes@514: assert( daox->track_count == cue_track_count ); nkeynes@514: for( i=0; itrack_count; i++ ) { nkeynes@514: image->track[cue_track_id].sector_size = GUINT32_FROM_BE(daox->track[i].sector_size); nkeynes@514: image->track[cue_track_id].offset = GUINT64_FROM_BE(daox->track[i].offset); nkeynes@514: image->track[cue_track_id].mode = nrg_track_mode( daox->track[i].mode ); nkeynes@514: image->track[cue_track_id].sector_count = nkeynes@514: (GUINT64_FROM_BE(daox->track[i].end) - GUINT64_FROM_BE(daox->track[i].offset))/ nkeynes@514: GUINT32_FROM_BE(daox->track[i].sector_size); nkeynes@514: cue_track_id++; nkeynes@514: } nkeynes@514: break; nkeynes@514: nkeynes@138: case SINF_ID: nkeynes@138: /* Data is a single 32-bit number representing number of tracks in session */ nkeynes@514: i = GUINT32_FROM_BE( *(uint32_t *)data ); nkeynes@138: while( i-- > 0 ) nkeynes@342: image->track[session_track_id++].session = session_id; nkeynes@138: session_id++; nkeynes@138: break; nkeynes@138: case ETNF_ID: nkeynes@514: etnf = (struct nrg_etnf *)data; nkeynes@514: count = chunk.length / sizeof(struct nrg_etnf); nkeynes@514: for( i=0; i < count; i++, etnf++ ) { nkeynes@514: image->track[track_id].offset = GUINT32_FROM_BE(etnf->offset); nkeynes@514: image->track[track_id].lba = GUINT32_FROM_BE(etnf->lba) + (i+1)*GDROM_PREGAP; nkeynes@514: image->track[track_id].mode = nrg_track_mode( GUINT32_FROM_BE(etnf->mode) ); nkeynes@342: if( image->track[track_id].mode == -1 ) { nkeynes@468: gdrom_image_destroy_no_close(disc); nkeynes@138: return NULL; nkeynes@138: } nkeynes@342: if( image->track[track_id].mode == GDROM_CDDA ) nkeynes@342: image->track[track_id].flags = 0x01; nkeynes@142: else nkeynes@342: image->track[track_id].flags = 0x01 | TRACK_DATA; nkeynes@342: image->track[track_id].sector_size = GDROM_SECTOR_SIZE(image->track[track_id].mode); nkeynes@514: image->track[track_id].sector_count = GUINT32_FROM_BE(etnf->length) / nkeynes@342: image->track[track_id].sector_size; nkeynes@138: track_id++; nkeynes@138: } nkeynes@138: break; nkeynes@514: case ETN2_ID: nkeynes@514: etn2 = (struct nrg_etn2 *)data; nkeynes@514: count = chunk.length / sizeof(struct nrg_etn2); nkeynes@514: for( i=0; i < count; i++, etn2++ ) { nkeynes@514: image->track[track_id].offset = (uint32_t)GUINT64_FROM_BE(etn2->offset); nkeynes@514: image->track[track_id].lba = GUINT32_FROM_BE(etn2->lba) + (i+1)*GDROM_PREGAP; nkeynes@514: image->track[track_id].mode = nrg_track_mode( GUINT32_FROM_BE(etn2->mode) ); nkeynes@514: if( image->track[track_id].mode == -1 ) { nkeynes@514: gdrom_image_destroy_no_close(disc); nkeynes@514: return NULL; nkeynes@514: } nkeynes@514: if( image->track[track_id].mode == GDROM_CDDA ) nkeynes@514: image->track[track_id].flags = 0x01; nkeynes@514: else nkeynes@514: image->track[track_id].flags = 0x01 | TRACK_DATA; nkeynes@514: image->track[track_id].sector_size = GDROM_SECTOR_SIZE(image->track[track_id].mode); nkeynes@514: image->track[track_id].sector_count = (uint32_t)(GUINT64_FROM_BE(etn2->length) / nkeynes@514: image->track[track_id].sector_size); nkeynes@514: track_id++; nkeynes@514: } nkeynes@514: break; nkeynes@514: nkeynes@138: case END_ID: nkeynes@138: end = TRUE; nkeynes@138: break; nkeynes@138: } nkeynes@138: } while( !end ); nkeynes@342: image->track_count = track_id; nkeynes@138: return disc; nkeynes@138: } nkeynes@138: nkeynes@138: nkeynes@342: