filename | src/gdrom/nrg.c |
changeset | 736:a02d1475ccfd |
prev | 678:35eb00945316 |
next | 832:40e5bb525c4e |
author | nkeynes |
date | Tue Jul 29 06:35:28 2008 +0000 (15 years ago) |
permissions | -rw-r--r-- |
last change | Workaround OS X's inability to handle CD reads of unknown size (ie where the read request failed to specify an expected sector type) - read raw sectors and parse it out by hand. |
file | annotate | diff | log | raw |
nkeynes@138 | 1 | /** |
nkeynes@561 | 2 | * $Id$ |
nkeynes@138 | 3 | * |
nkeynes@138 | 4 | * Nero (NRG) CD file format. File information stolen shamelessly from |
nkeynes@138 | 5 | * libcdio. |
nkeynes@138 | 6 | * |
nkeynes@138 | 7 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@138 | 8 | * |
nkeynes@138 | 9 | * This program is free software; you can redistribute it and/or modify |
nkeynes@138 | 10 | * it under the terms of the GNU General Public License as published by |
nkeynes@138 | 11 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@138 | 12 | * (at your option) any later version. |
nkeynes@138 | 13 | * |
nkeynes@138 | 14 | * This program is distributed in the hope that it will be useful, |
nkeynes@138 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@138 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@138 | 17 | * GNU General Public License for more details. |
nkeynes@138 | 18 | */ |
nkeynes@138 | 19 | |
nkeynes@138 | 20 | #include <assert.h> |
nkeynes@138 | 21 | #include <stdio.h> |
nkeynes@138 | 22 | #include <errno.h> |
nkeynes@514 | 23 | #include <glib/gtypes.h> |
nkeynes@678 | 24 | #include "gdrom/gddriver.h" |
nkeynes@138 | 25 | #include "dream.h" |
nkeynes@138 | 26 | |
nkeynes@168 | 27 | static gboolean nrg_image_is_valid( FILE *f ); |
nkeynes@168 | 28 | static gdrom_disc_t nrg_image_open( const gchar *filename, FILE *f ); |
nkeynes@168 | 29 | |
nkeynes@168 | 30 | struct gdrom_image_class nrg_image_class = { "Nero", "nrg", |
nkeynes@736 | 31 | nrg_image_is_valid, nrg_image_open }; |
nkeynes@168 | 32 | |
nkeynes@138 | 33 | #define NERO_V55_ID 0x4e455235 |
nkeynes@138 | 34 | #define NERO_V50_ID 0x4e45524f |
nkeynes@138 | 35 | |
nkeynes@138 | 36 | /* Courtesy of libcdio */ |
nkeynes@138 | 37 | /* 5.0 or earlier */ |
nkeynes@138 | 38 | #define NERO_ID 0x4e45524f /* Nero pre 5.5.x */ |
nkeynes@138 | 39 | #define CUES_ID 0x43554553 /* Nero pre version 5.5.x-6.x */ |
nkeynes@138 | 40 | #define DAOI_ID 0x44414f49 |
nkeynes@138 | 41 | #define ETNF_ID 0x45544e46 |
nkeynes@138 | 42 | #define SINF_ID 0x53494e46 /* Session information */ |
nkeynes@138 | 43 | #define END_ID 0x454e4421 |
nkeynes@138 | 44 | /* 5.5+ only */ |
nkeynes@138 | 45 | #define NER5_ID 0x4e455235 /* Nero version 5.5.x */ |
nkeynes@138 | 46 | #define CDTX_ID 0x43445458 /* CD TEXT */ |
nkeynes@138 | 47 | #define CUEX_ID 0x43554558 /* Nero version 5.5.x-6.x */ |
nkeynes@138 | 48 | #define DAOX_ID 0x44414f58 /* Nero version 5.5.x-6.x */ |
nkeynes@138 | 49 | #define ETN2_ID 0x45544e32 |
nkeynes@138 | 50 | #define MTYP_ID 0x4d545950 /* Disc Media type? */ |
nkeynes@138 | 51 | |
nkeynes@138 | 52 | |
nkeynes@138 | 53 | union nrg_footer { |
nkeynes@138 | 54 | struct nrg_footer_v50 { |
nkeynes@736 | 55 | uint32_t dummy; |
nkeynes@736 | 56 | uint32_t id; |
nkeynes@736 | 57 | uint32_t offset; |
nkeynes@138 | 58 | } v50; |
nkeynes@138 | 59 | struct nrg_footer_v55 { |
nkeynes@736 | 60 | uint32_t id; |
nkeynes@736 | 61 | uint64_t offset; |
nkeynes@138 | 62 | } v55; |
nkeynes@138 | 63 | }; |
nkeynes@138 | 64 | |
nkeynes@138 | 65 | struct nrg_chunk { |
nkeynes@138 | 66 | uint32_t id; |
nkeynes@138 | 67 | uint32_t length; |
nkeynes@138 | 68 | }; |
nkeynes@138 | 69 | |
nkeynes@138 | 70 | struct nrg_etnf { |
nkeynes@138 | 71 | uint32_t offset; |
nkeynes@138 | 72 | uint32_t length; |
nkeynes@138 | 73 | uint32_t mode; |
nkeynes@138 | 74 | uint32_t lba; |
nkeynes@138 | 75 | uint32_t padding; |
nkeynes@138 | 76 | }; |
nkeynes@138 | 77 | |
nkeynes@514 | 78 | struct nrg_etn2 { |
nkeynes@514 | 79 | uint64_t offset; |
nkeynes@514 | 80 | uint64_t length; |
nkeynes@514 | 81 | uint32_t mode; |
nkeynes@514 | 82 | uint32_t lba; |
nkeynes@514 | 83 | uint64_t padding; |
nkeynes@514 | 84 | }; |
nkeynes@514 | 85 | |
nkeynes@138 | 86 | struct nrg_cues { |
nkeynes@138 | 87 | uint8_t type; |
nkeynes@138 | 88 | uint8_t track; |
nkeynes@138 | 89 | uint8_t control; |
nkeynes@138 | 90 | uint8_t pad; |
nkeynes@138 | 91 | uint32_t addr; |
nkeynes@138 | 92 | }; |
nkeynes@138 | 93 | |
nkeynes@138 | 94 | struct nrg_daoi { |
nkeynes@138 | 95 | uint32_t length; |
nkeynes@138 | 96 | char mcn[14]; |
nkeynes@138 | 97 | uint8_t disc_mode; |
nkeynes@138 | 98 | uint8_t unknown[2]; /* always 01 01? */ |
nkeynes@138 | 99 | uint8_t track_count; |
nkeynes@138 | 100 | struct nrg_daoi_track { |
nkeynes@736 | 101 | char unknown[10]; |
nkeynes@736 | 102 | uint32_t sector_size __attribute__((packed)); /* Always 0? */ |
nkeynes@736 | 103 | uint8_t mode; |
nkeynes@736 | 104 | uint8_t unknown2[3]; /* Always 00 00 01? */ |
nkeynes@736 | 105 | uint32_t pregap __attribute__((packed)); |
nkeynes@736 | 106 | uint32_t offset __attribute__((packed)); |
nkeynes@736 | 107 | uint32_t end __attribute__((packed)); |
nkeynes@138 | 108 | } track[0]; |
nkeynes@138 | 109 | } __attribute__((packed)); |
nkeynes@138 | 110 | |
nkeynes@514 | 111 | struct nrg_daox { |
nkeynes@514 | 112 | uint32_t length; |
nkeynes@514 | 113 | char mcn[14]; |
nkeynes@514 | 114 | uint8_t disc_mode; |
nkeynes@514 | 115 | uint8_t unknown[2]; /* always 01 01? */ |
nkeynes@514 | 116 | uint8_t track_count; |
nkeynes@514 | 117 | struct nrg_daox_track { |
nkeynes@736 | 118 | char unknown[10]; |
nkeynes@736 | 119 | uint32_t sector_size __attribute__((packed)); /* Always 0? */ |
nkeynes@736 | 120 | uint8_t mode; |
nkeynes@736 | 121 | uint8_t unknown2[3]; /* Always 00 00 01? */ |
nkeynes@736 | 122 | uint64_t pregap __attribute__((packed)); |
nkeynes@736 | 123 | uint64_t offset __attribute__((packed)); |
nkeynes@736 | 124 | uint64_t end __attribute__((packed)); |
nkeynes@514 | 125 | } track[0]; |
nkeynes@514 | 126 | } __attribute__((packed)); |
nkeynes@514 | 127 | |
nkeynes@138 | 128 | /** |
nkeynes@138 | 129 | * Convert an 8-bit BCD number to normal integer form. |
nkeynes@138 | 130 | * Eg, 0x79 => 79 |
nkeynes@138 | 131 | */ |
nkeynes@138 | 132 | uint8_t static bcd_to_uint8( uint8_t bcd ) |
nkeynes@138 | 133 | { |
nkeynes@138 | 134 | return (bcd & 0x0F) + (((bcd & 0xF0)>>4)*10); |
nkeynes@138 | 135 | } |
nkeynes@138 | 136 | |
nkeynes@138 | 137 | |
nkeynes@138 | 138 | /** |
nkeynes@138 | 139 | * Convert a 32 bit MSF address (BCD coded) to the |
nkeynes@138 | 140 | * equivalent LBA form. |
nkeynes@138 | 141 | * Eg, 0x |
nkeynes@138 | 142 | */ |
nkeynes@138 | 143 | uint32_t static msf_to_lba( uint32_t msf ) |
nkeynes@138 | 144 | { |
nkeynes@514 | 145 | msf = GUINT32_FROM_BE(msf); |
nkeynes@138 | 146 | int f = bcd_to_uint8(msf); |
nkeynes@138 | 147 | int s = bcd_to_uint8(msf>>8); |
nkeynes@138 | 148 | int m = bcd_to_uint8(msf>>16); |
nkeynes@138 | 149 | return (m * 60 + s) * 75 + f; |
nkeynes@138 | 150 | |
nkeynes@138 | 151 | } |
nkeynes@138 | 152 | |
nkeynes@138 | 153 | uint32_t static nrg_track_mode( uint8_t mode ) |
nkeynes@138 | 154 | { |
nkeynes@138 | 155 | switch( mode ) { |
nkeynes@138 | 156 | case 0: return GDROM_MODE1; |
nkeynes@644 | 157 | case 2: return GDROM_MODE2_FORM1; |
nkeynes@644 | 158 | case 3: return GDROM_SEMIRAW_MODE2; |
nkeynes@138 | 159 | case 7: return GDROM_CDDA; |
nkeynes@138 | 160 | default: |
nkeynes@736 | 161 | ERROR( "Unrecognized track mode %d in Nero image", mode ); |
nkeynes@736 | 162 | return -1; |
nkeynes@138 | 163 | } |
nkeynes@138 | 164 | } |
nkeynes@138 | 165 | |
nkeynes@168 | 166 | static gboolean nrg_image_is_valid( FILE *f ) |
nkeynes@138 | 167 | { |
nkeynes@168 | 168 | union nrg_footer footer; |
nkeynes@168 | 169 | |
nkeynes@168 | 170 | fseek( f, -12, SEEK_END ); |
nkeynes@168 | 171 | fread( &footer, sizeof(footer), 1, f ); |
nkeynes@514 | 172 | if( GUINT32_FROM_BE(footer.v50.id) == NERO_V50_ID || |
nkeynes@736 | 173 | GUINT32_FROM_BE(footer.v55.id) == NERO_V55_ID ) { |
nkeynes@736 | 174 | return TRUE; |
nkeynes@168 | 175 | } else { |
nkeynes@736 | 176 | return FALSE; |
nkeynes@168 | 177 | } |
nkeynes@168 | 178 | } |
nkeynes@168 | 179 | |
nkeynes@168 | 180 | static gdrom_disc_t nrg_image_open( const gchar *filename, FILE *f ) |
nkeynes@168 | 181 | { |
nkeynes@138 | 182 | union nrg_footer footer; |
nkeynes@138 | 183 | struct nrg_chunk chunk; |
nkeynes@138 | 184 | struct nrg_daoi *dao; |
nkeynes@514 | 185 | struct nrg_daox *daox; |
nkeynes@514 | 186 | struct nrg_etnf *etnf; |
nkeynes@514 | 187 | struct nrg_etn2 *etn2; |
nkeynes@138 | 188 | gdrom_disc_t disc; |
nkeynes@342 | 189 | gdrom_image_t image; |
nkeynes@138 | 190 | gboolean end = FALSE; |
nkeynes@514 | 191 | uint32_t chunk_id; |
nkeynes@138 | 192 | int session_id = 0; |
nkeynes@138 | 193 | int session_track_id = 0; |
nkeynes@138 | 194 | int track_id = 0; |
nkeynes@138 | 195 | int cue_track_id = 0, cue_track_count = 0; |
nkeynes@514 | 196 | int i, count; |
nkeynes@138 | 197 | |
nkeynes@138 | 198 | fseek( f, -12, SEEK_END ); |
nkeynes@138 | 199 | fread( &footer, sizeof(footer), 1, f ); |
nkeynes@514 | 200 | if( GUINT32_FROM_BE(footer.v50.id) == NERO_V50_ID ) { |
nkeynes@736 | 201 | INFO( "Loading Nero 5.0 image" ); |
nkeynes@736 | 202 | fseek( f, GUINT32_FROM_BE(footer.v50.offset), SEEK_SET ); |
nkeynes@514 | 203 | } else if( GUINT32_FROM_BE(footer.v55.id) == NERO_V55_ID ) { |
nkeynes@736 | 204 | INFO( "Loading Nero 5.5+ image" ); |
nkeynes@736 | 205 | fseek( f, (uint32_t)GUINT64_FROM_BE(footer.v55.offset), SEEK_SET ); |
nkeynes@138 | 206 | } else { |
nkeynes@736 | 207 | /* Not a (recognized) Nero image */ |
nkeynes@736 | 208 | return NULL; |
nkeynes@138 | 209 | } |
nkeynes@736 | 210 | |
nkeynes@464 | 211 | disc = gdrom_image_new(filename, f); |
nkeynes@138 | 212 | if( disc == NULL ) { |
nkeynes@736 | 213 | ERROR("Unable to allocate memory!"); |
nkeynes@736 | 214 | return NULL; |
nkeynes@138 | 215 | } |
nkeynes@342 | 216 | image = (gdrom_image_t)disc; |
nkeynes@138 | 217 | |
nkeynes@138 | 218 | do { |
nkeynes@736 | 219 | fread( &chunk, sizeof(chunk), 1, f ); |
nkeynes@736 | 220 | chunk.length = GUINT32_FROM_BE(chunk.length); |
nkeynes@736 | 221 | char data[chunk.length]; |
nkeynes@736 | 222 | fread( data, chunk.length, 1, f ); |
nkeynes@736 | 223 | chunk_id = GUINT32_FROM_BE(chunk.id); |
nkeynes@736 | 224 | switch( chunk_id ) { |
nkeynes@736 | 225 | case CUES_ID: |
nkeynes@736 | 226 | case CUEX_ID: |
nkeynes@736 | 227 | cue_track_id = track_id; |
nkeynes@736 | 228 | cue_track_count = ((chunk.length / sizeof(struct nrg_cues)) >> 1) - 1; |
nkeynes@736 | 229 | track_id += cue_track_count; |
nkeynes@736 | 230 | for( i=0; i<chunk.length; i+= sizeof(struct nrg_cues) ) { |
nkeynes@736 | 231 | struct nrg_cues *cue = (struct nrg_cues *)(data+i); |
nkeynes@736 | 232 | int track = 0; |
nkeynes@736 | 233 | uint32_t lba; |
nkeynes@736 | 234 | if( chunk_id == CUEX_ID ) { |
nkeynes@736 | 235 | lba = GUINT32_FROM_BE( cue->addr ) + GDROM_PREGAP; |
nkeynes@736 | 236 | } else { |
nkeynes@736 | 237 | lba = msf_to_lba( cue->addr ); |
nkeynes@736 | 238 | } |
nkeynes@736 | 239 | if( cue->track == 0 ) |
nkeynes@736 | 240 | continue; /* Track 0. Leadin? always 0? */ |
nkeynes@736 | 241 | if( cue->track == 0xAA ) { /* end of disc */ |
nkeynes@736 | 242 | image->track[track_id-1].sector_count = |
nkeynes@736 | 243 | lba - image->track[track_id-1].lba; |
nkeynes@736 | 244 | } else { |
nkeynes@736 | 245 | track = cue_track_id + bcd_to_uint8(cue->track) - 1; |
nkeynes@736 | 246 | if( (cue->control & 0x01) == 0 ) { |
nkeynes@736 | 247 | /* Pre-gap address. */ |
nkeynes@736 | 248 | if( track != 0 ) { |
nkeynes@736 | 249 | image->track[track-1].sector_count = |
nkeynes@736 | 250 | lba - image->track[track-1].lba; |
nkeynes@736 | 251 | } |
nkeynes@736 | 252 | } else { /* Track-start address */ |
nkeynes@736 | 253 | image->track[track].lba = lba; |
nkeynes@736 | 254 | image->track[track].flags = cue->type; |
nkeynes@736 | 255 | } |
nkeynes@736 | 256 | } |
nkeynes@736 | 257 | } |
nkeynes@736 | 258 | break; |
nkeynes@736 | 259 | case DAOI_ID: |
nkeynes@736 | 260 | dao = (struct nrg_daoi *)data; |
nkeynes@736 | 261 | memcpy( image->mcn, dao->mcn, 13 ); |
nkeynes@736 | 262 | image->mcn[13] = '\0'; |
nkeynes@736 | 263 | assert( dao->track_count * 30 + 22 == chunk.length ); |
nkeynes@736 | 264 | assert( dao->track_count == cue_track_count ); |
nkeynes@736 | 265 | for( i=0; i<dao->track_count; i++ ) { |
nkeynes@736 | 266 | image->track[cue_track_id].sector_size = GUINT32_FROM_BE(dao->track[i].sector_size); |
nkeynes@736 | 267 | image->track[cue_track_id].offset = GUINT32_FROM_BE(dao->track[i].offset); |
nkeynes@736 | 268 | image->track[cue_track_id].mode = nrg_track_mode( dao->track[i].mode ); |
nkeynes@736 | 269 | image->track[cue_track_id].sector_count = |
nkeynes@736 | 270 | (GUINT32_FROM_BE(dao->track[i].end) - GUINT32_FROM_BE(dao->track[i].offset))/ |
nkeynes@736 | 271 | GUINT32_FROM_BE(dao->track[i].sector_size); |
nkeynes@736 | 272 | cue_track_id++; |
nkeynes@736 | 273 | } |
nkeynes@736 | 274 | break; |
nkeynes@736 | 275 | case DAOX_ID: |
nkeynes@736 | 276 | daox = (struct nrg_daox *)data; |
nkeynes@736 | 277 | memcpy( image->mcn, daox->mcn, 13 ); |
nkeynes@736 | 278 | image->mcn[13] = '\0'; |
nkeynes@736 | 279 | assert( daox->track_count * 42 + 22 == chunk.length ); |
nkeynes@736 | 280 | assert( daox->track_count == cue_track_count ); |
nkeynes@736 | 281 | for( i=0; i<daox->track_count; i++ ) { |
nkeynes@736 | 282 | image->track[cue_track_id].sector_size = GUINT32_FROM_BE(daox->track[i].sector_size); |
nkeynes@736 | 283 | image->track[cue_track_id].offset = GUINT64_FROM_BE(daox->track[i].offset); |
nkeynes@736 | 284 | image->track[cue_track_id].mode = nrg_track_mode( daox->track[i].mode ); |
nkeynes@736 | 285 | image->track[cue_track_id].sector_count = |
nkeynes@736 | 286 | (GUINT64_FROM_BE(daox->track[i].end) - GUINT64_FROM_BE(daox->track[i].offset))/ |
nkeynes@736 | 287 | GUINT32_FROM_BE(daox->track[i].sector_size); |
nkeynes@736 | 288 | cue_track_id++; |
nkeynes@736 | 289 | } |
nkeynes@736 | 290 | break; |
nkeynes@514 | 291 | |
nkeynes@736 | 292 | case SINF_ID: |
nkeynes@736 | 293 | /* Data is a single 32-bit number representing number of tracks in session */ |
nkeynes@736 | 294 | i = GUINT32_FROM_BE( *(uint32_t *)data ); |
nkeynes@736 | 295 | while( i-- > 0 ) |
nkeynes@736 | 296 | image->track[session_track_id++].session = session_id; |
nkeynes@736 | 297 | session_id++; |
nkeynes@736 | 298 | break; |
nkeynes@736 | 299 | case ETNF_ID: |
nkeynes@736 | 300 | etnf = (struct nrg_etnf *)data; |
nkeynes@736 | 301 | count = chunk.length / sizeof(struct nrg_etnf); |
nkeynes@736 | 302 | for( i=0; i < count; i++, etnf++ ) { |
nkeynes@736 | 303 | image->track[track_id].offset = GUINT32_FROM_BE(etnf->offset); |
nkeynes@736 | 304 | image->track[track_id].lba = GUINT32_FROM_BE(etnf->lba) + (i+1)*GDROM_PREGAP; |
nkeynes@736 | 305 | image->track[track_id].mode = nrg_track_mode( GUINT32_FROM_BE(etnf->mode) ); |
nkeynes@736 | 306 | if( image->track[track_id].mode == -1 ) { |
nkeynes@736 | 307 | gdrom_image_destroy_no_close(disc); |
nkeynes@736 | 308 | return NULL; |
nkeynes@736 | 309 | } |
nkeynes@736 | 310 | if( image->track[track_id].mode == GDROM_CDDA ) |
nkeynes@736 | 311 | image->track[track_id].flags = 0x01; |
nkeynes@736 | 312 | else |
nkeynes@736 | 313 | image->track[track_id].flags = 0x01 | TRACK_DATA; |
nkeynes@736 | 314 | image->track[track_id].sector_size = GDROM_SECTOR_SIZE(image->track[track_id].mode); |
nkeynes@736 | 315 | image->track[track_id].sector_count = GUINT32_FROM_BE(etnf->length) / |
nkeynes@736 | 316 | image->track[track_id].sector_size; |
nkeynes@736 | 317 | track_id++; |
nkeynes@736 | 318 | } |
nkeynes@736 | 319 | break; |
nkeynes@736 | 320 | case ETN2_ID: |
nkeynes@736 | 321 | etn2 = (struct nrg_etn2 *)data; |
nkeynes@736 | 322 | count = chunk.length / sizeof(struct nrg_etn2); |
nkeynes@736 | 323 | for( i=0; i < count; i++, etn2++ ) { |
nkeynes@736 | 324 | image->track[track_id].offset = (uint32_t)GUINT64_FROM_BE(etn2->offset); |
nkeynes@736 | 325 | image->track[track_id].lba = GUINT32_FROM_BE(etn2->lba) + (i+1)*GDROM_PREGAP; |
nkeynes@736 | 326 | image->track[track_id].mode = nrg_track_mode( GUINT32_FROM_BE(etn2->mode) ); |
nkeynes@736 | 327 | if( image->track[track_id].mode == -1 ) { |
nkeynes@736 | 328 | gdrom_image_destroy_no_close(disc); |
nkeynes@736 | 329 | return NULL; |
nkeynes@736 | 330 | } |
nkeynes@736 | 331 | if( image->track[track_id].mode == GDROM_CDDA ) |
nkeynes@736 | 332 | image->track[track_id].flags = 0x01; |
nkeynes@736 | 333 | else |
nkeynes@736 | 334 | image->track[track_id].flags = 0x01 | TRACK_DATA; |
nkeynes@736 | 335 | image->track[track_id].sector_size = GDROM_SECTOR_SIZE(image->track[track_id].mode); |
nkeynes@736 | 336 | image->track[track_id].sector_count = (uint32_t)(GUINT64_FROM_BE(etn2->length) / |
nkeynes@736 | 337 | image->track[track_id].sector_size); |
nkeynes@736 | 338 | track_id++; |
nkeynes@736 | 339 | } |
nkeynes@736 | 340 | break; |
nkeynes@736 | 341 | |
nkeynes@736 | 342 | case END_ID: |
nkeynes@736 | 343 | end = TRUE; |
nkeynes@736 | 344 | break; |
nkeynes@736 | 345 | } |
nkeynes@138 | 346 | } while( !end ); |
nkeynes@342 | 347 | image->track_count = track_id; |
nkeynes@138 | 348 | return disc; |
nkeynes@138 | 349 | } |
nkeynes@138 | 350 | |
nkeynes@138 | 351 | |
nkeynes@342 | 352 |
.