filename | src/gdrom/nrg.c |
changeset | 142:2f631c3a3946 |
prev | 138:afabd7e6d26d |
next | 168:203a72138e16 |
author | nkeynes |
date | Tue May 02 14:09:11 2006 +0000 (17 years ago) |
permissions | -rw-r--r-- |
last change | Add packet.h Implement read toc, request sense, test ready commands. Fix failure to clear error status on new command |
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nkeynes@138 | 1 | /** |
nkeynes@142 | 2 | * $Id: nrg.c,v 1.2 2006-05-02 14:09:11 nkeynes Exp $ |
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@138 | 23 | #include "gdrom/gdrom.h" |
nkeynes@138 | 24 | #include "dream.h" |
nkeynes@138 | 25 | |
nkeynes@138 | 26 | #define NERO_V55_ID 0x4e455235 |
nkeynes@138 | 27 | #define NERO_V50_ID 0x4e45524f |
nkeynes@138 | 28 | |
nkeynes@138 | 29 | /* Courtesy of libcdio */ |
nkeynes@138 | 30 | /* 5.0 or earlier */ |
nkeynes@138 | 31 | #define NERO_ID 0x4e45524f /* Nero pre 5.5.x */ |
nkeynes@138 | 32 | #define CUES_ID 0x43554553 /* Nero pre version 5.5.x-6.x */ |
nkeynes@138 | 33 | #define DAOI_ID 0x44414f49 |
nkeynes@138 | 34 | #define ETNF_ID 0x45544e46 |
nkeynes@138 | 35 | #define SINF_ID 0x53494e46 /* Session information */ |
nkeynes@138 | 36 | #define END_ID 0x454e4421 |
nkeynes@138 | 37 | /* 5.5+ only */ |
nkeynes@138 | 38 | #define NER5_ID 0x4e455235 /* Nero version 5.5.x */ |
nkeynes@138 | 39 | #define CDTX_ID 0x43445458 /* CD TEXT */ |
nkeynes@138 | 40 | #define CUEX_ID 0x43554558 /* Nero version 5.5.x-6.x */ |
nkeynes@138 | 41 | #define DAOX_ID 0x44414f58 /* Nero version 5.5.x-6.x */ |
nkeynes@138 | 42 | #define ETN2_ID 0x45544e32 |
nkeynes@138 | 43 | #define MTYP_ID 0x4d545950 /* Disc Media type? */ |
nkeynes@138 | 44 | |
nkeynes@138 | 45 | |
nkeynes@138 | 46 | union nrg_footer { |
nkeynes@138 | 47 | struct nrg_footer_v50 { |
nkeynes@138 | 48 | uint32_t dummy; |
nkeynes@138 | 49 | uint32_t id; |
nkeynes@138 | 50 | uint32_t offset; |
nkeynes@138 | 51 | } v50; |
nkeynes@138 | 52 | struct nrg_footer_v55 { |
nkeynes@138 | 53 | uint32_t id; |
nkeynes@138 | 54 | uint64_t offset; |
nkeynes@138 | 55 | } v55; |
nkeynes@138 | 56 | }; |
nkeynes@138 | 57 | |
nkeynes@138 | 58 | struct nrg_chunk { |
nkeynes@138 | 59 | uint32_t id; |
nkeynes@138 | 60 | uint32_t length; |
nkeynes@138 | 61 | }; |
nkeynes@138 | 62 | |
nkeynes@138 | 63 | struct nrg_etnf { |
nkeynes@138 | 64 | uint32_t offset; |
nkeynes@138 | 65 | uint32_t length; |
nkeynes@138 | 66 | uint32_t mode; |
nkeynes@138 | 67 | uint32_t lba; |
nkeynes@138 | 68 | uint32_t padding; |
nkeynes@138 | 69 | }; |
nkeynes@138 | 70 | |
nkeynes@138 | 71 | struct nrg_cues { |
nkeynes@138 | 72 | uint8_t type; |
nkeynes@138 | 73 | uint8_t track; |
nkeynes@138 | 74 | uint8_t control; |
nkeynes@138 | 75 | uint8_t pad; |
nkeynes@138 | 76 | uint32_t addr; |
nkeynes@138 | 77 | }; |
nkeynes@138 | 78 | |
nkeynes@138 | 79 | struct nrg_daoi { |
nkeynes@138 | 80 | uint32_t length; |
nkeynes@138 | 81 | char mcn[14]; |
nkeynes@138 | 82 | uint8_t disc_mode; |
nkeynes@138 | 83 | uint8_t unknown[2]; /* always 01 01? */ |
nkeynes@138 | 84 | uint8_t track_count; |
nkeynes@138 | 85 | struct nrg_daoi_track { |
nkeynes@138 | 86 | char unknown[10]; |
nkeynes@138 | 87 | uint32_t sector_size __attribute__((packed)); /* Always 0? */ |
nkeynes@138 | 88 | uint8_t mode; |
nkeynes@138 | 89 | uint8_t unknown2[3]; /* Always 00 00 01? */ |
nkeynes@138 | 90 | uint32_t pregap __attribute__((packed)); |
nkeynes@138 | 91 | uint32_t offset __attribute__((packed)); |
nkeynes@138 | 92 | uint32_t end __attribute__((packed)); |
nkeynes@138 | 93 | } track[0]; |
nkeynes@138 | 94 | } __attribute__((packed)); |
nkeynes@138 | 95 | |
nkeynes@138 | 96 | /** |
nkeynes@138 | 97 | * Convert an 8-bit BCD number to normal integer form. |
nkeynes@138 | 98 | * Eg, 0x79 => 79 |
nkeynes@138 | 99 | */ |
nkeynes@138 | 100 | uint8_t static bcd_to_uint8( uint8_t bcd ) |
nkeynes@138 | 101 | { |
nkeynes@138 | 102 | return (bcd & 0x0F) + (((bcd & 0xF0)>>4)*10); |
nkeynes@138 | 103 | } |
nkeynes@138 | 104 | |
nkeynes@138 | 105 | |
nkeynes@138 | 106 | /** |
nkeynes@138 | 107 | * Convert a 32 bit MSF address (BCD coded) to the |
nkeynes@138 | 108 | * equivalent LBA form. |
nkeynes@138 | 109 | * Eg, 0x |
nkeynes@138 | 110 | */ |
nkeynes@138 | 111 | uint32_t static msf_to_lba( uint32_t msf ) |
nkeynes@138 | 112 | { |
nkeynes@138 | 113 | msf = ntohl(msf); |
nkeynes@138 | 114 | int f = bcd_to_uint8(msf); |
nkeynes@138 | 115 | int s = bcd_to_uint8(msf>>8); |
nkeynes@138 | 116 | int m = bcd_to_uint8(msf>>16); |
nkeynes@138 | 117 | return (m * 60 + s) * 75 + f; |
nkeynes@138 | 118 | |
nkeynes@138 | 119 | } |
nkeynes@138 | 120 | |
nkeynes@138 | 121 | uint32_t static nrg_track_mode( uint8_t mode ) |
nkeynes@138 | 122 | { |
nkeynes@138 | 123 | switch( mode ) { |
nkeynes@138 | 124 | case 0: return GDROM_MODE1; |
nkeynes@138 | 125 | case 2: return GDROM_MODE2_XA1; |
nkeynes@138 | 126 | case 3: return GDROM_MODE2; |
nkeynes@138 | 127 | case 7: return GDROM_CDDA; |
nkeynes@138 | 128 | default: |
nkeynes@138 | 129 | ERROR( "Unrecognized track mode %d in Nero image", mode ); |
nkeynes@138 | 130 | return -1; |
nkeynes@138 | 131 | } |
nkeynes@138 | 132 | } |
nkeynes@138 | 133 | |
nkeynes@138 | 134 | gdrom_disc_t nrg_image_open( const gchar *filename ) |
nkeynes@138 | 135 | { |
nkeynes@138 | 136 | FILE *f = fopen( filename, "ro" ); |
nkeynes@138 | 137 | union nrg_footer footer; |
nkeynes@138 | 138 | struct nrg_chunk chunk; |
nkeynes@138 | 139 | struct nrg_daoi *dao; |
nkeynes@138 | 140 | gdrom_disc_t disc; |
nkeynes@138 | 141 | gboolean end = FALSE; |
nkeynes@138 | 142 | int session_id = 0; |
nkeynes@138 | 143 | int session_track_id = 0; |
nkeynes@138 | 144 | int track_id = 0; |
nkeynes@138 | 145 | int cue_track_id = 0, cue_track_count = 0; |
nkeynes@138 | 146 | int i; |
nkeynes@138 | 147 | |
nkeynes@138 | 148 | if( f == NULL ) { |
nkeynes@138 | 149 | ERROR( "Unable to open file '%s': %s", filename, strerror(errno) ); |
nkeynes@138 | 150 | return NULL; |
nkeynes@138 | 151 | } |
nkeynes@138 | 152 | |
nkeynes@138 | 153 | fseek( f, -12, SEEK_END ); |
nkeynes@138 | 154 | fread( &footer, sizeof(footer), 1, f ); |
nkeynes@138 | 155 | if( ntohl(footer.v50.id) == NERO_V50_ID ) { |
nkeynes@138 | 156 | INFO( "Loading Nero 5.0 image" ); |
nkeynes@138 | 157 | fseek( f, ntohl(footer.v50.offset), SEEK_SET ); |
nkeynes@138 | 158 | } else if( ntohl(footer.v55.id) == NERO_V55_ID ) { |
nkeynes@138 | 159 | INFO( "Loading Nero 5.5+ image" ); |
nkeynes@138 | 160 | fseek( f, ntohl(footer.v55.offset), SEEK_SET ); |
nkeynes@138 | 161 | } else { |
nkeynes@138 | 162 | ERROR("Unable to understand file '%s' as a Nero image", filename ); |
nkeynes@138 | 163 | return NULL; |
nkeynes@138 | 164 | } |
nkeynes@138 | 165 | |
nkeynes@138 | 166 | disc = gdrom_image_new(f); |
nkeynes@138 | 167 | if( disc == NULL ) { |
nkeynes@138 | 168 | ERROR("Unable to allocate memory!"); |
nkeynes@138 | 169 | fclose(f); |
nkeynes@138 | 170 | return NULL; |
nkeynes@138 | 171 | } |
nkeynes@138 | 172 | |
nkeynes@138 | 173 | do { |
nkeynes@138 | 174 | fread( &chunk, sizeof(chunk), 1, f ); |
nkeynes@138 | 175 | chunk.length = ntohl(chunk.length); |
nkeynes@138 | 176 | char data[chunk.length]; |
nkeynes@138 | 177 | fread( data, chunk.length, 1, f ); |
nkeynes@138 | 178 | switch( ntohl(chunk.id) ) { |
nkeynes@138 | 179 | case CUES_ID: |
nkeynes@138 | 180 | cue_track_id = track_id; |
nkeynes@138 | 181 | cue_track_count = ((chunk.length / sizeof(struct nrg_cues)) >> 1) - 1; |
nkeynes@138 | 182 | track_id += cue_track_count; |
nkeynes@138 | 183 | for( i=0; i<chunk.length; i+= sizeof(struct nrg_cues) ) { |
nkeynes@138 | 184 | struct nrg_cues *cue = (struct nrg_cues *)(data+i); |
nkeynes@138 | 185 | int track = 0; |
nkeynes@138 | 186 | if( cue->track == 0 ) |
nkeynes@138 | 187 | continue; /* Track 0. Leadin? always 0? */ |
nkeynes@138 | 188 | if( cue->track == 0xAA ) { /* end of disc */ |
nkeynes@138 | 189 | disc->track[track_id-1].sector_count = |
nkeynes@138 | 190 | msf_to_lba( cue->addr ) - disc->track[track_id-1].lba; |
nkeynes@138 | 191 | } else { |
nkeynes@138 | 192 | track = cue_track_id + bcd_to_uint8(cue->track) - 1; |
nkeynes@138 | 193 | if( (cue->control & 0x01) == 0 ) { |
nkeynes@138 | 194 | /* Pre-gap address. */ |
nkeynes@138 | 195 | if( track != 0 ) { |
nkeynes@138 | 196 | disc->track[track-1].sector_count = |
nkeynes@138 | 197 | msf_to_lba( cue->addr ) - disc->track[track-1].lba; |
nkeynes@138 | 198 | } |
nkeynes@138 | 199 | } else { /* Track-start address */ |
nkeynes@138 | 200 | disc->track[track].lba = msf_to_lba( cue->addr ); |
nkeynes@142 | 201 | disc->track[track].flags = cue->type; |
nkeynes@138 | 202 | } |
nkeynes@138 | 203 | } |
nkeynes@138 | 204 | } |
nkeynes@138 | 205 | break; |
nkeynes@138 | 206 | case DAOI_ID: |
nkeynes@138 | 207 | dao = (struct nrg_daoi *)data; |
nkeynes@138 | 208 | memcpy( disc->mcn, dao->mcn, 13 ); |
nkeynes@138 | 209 | disc->mcn[13] = '\0'; |
nkeynes@138 | 210 | assert( dao->track_count * 30 + 22 == chunk.length ); |
nkeynes@138 | 211 | assert( dao->track_count == cue_track_count ); |
nkeynes@138 | 212 | for( i=0; i<dao->track_count; i++ ) { |
nkeynes@138 | 213 | disc->track[cue_track_id].sector_size = ntohl(dao->track[i].sector_size); |
nkeynes@138 | 214 | disc->track[cue_track_id].offset = ntohl(dao->track[i].offset); |
nkeynes@138 | 215 | disc->track[cue_track_id].mode = nrg_track_mode( dao->track[i].mode ); |
nkeynes@138 | 216 | assert( disc->track[cue_track_id].sector_count == |
nkeynes@138 | 217 | (ntohl(dao->track[i].end) - ntohl(dao->track[i].offset))/ |
nkeynes@138 | 218 | ntohl(dao->track[i].sector_size) ); |
nkeynes@138 | 219 | cue_track_id++; |
nkeynes@138 | 220 | } |
nkeynes@138 | 221 | break; |
nkeynes@138 | 222 | case SINF_ID: |
nkeynes@138 | 223 | /* Data is a single 32-bit number representing number of tracks in session */ |
nkeynes@138 | 224 | i = ntohl( *(uint32_t *)data ); |
nkeynes@138 | 225 | while( i-- > 0 ) |
nkeynes@138 | 226 | disc->track[session_track_id++].session = session_id; |
nkeynes@138 | 227 | session_id++; |
nkeynes@138 | 228 | break; |
nkeynes@138 | 229 | case ETNF_ID: |
nkeynes@138 | 230 | for( i=0; i < chunk.length; i+= 0x14 ) { |
nkeynes@138 | 231 | struct nrg_etnf *etnf = (struct nrg_etnf *)(data+i); |
nkeynes@138 | 232 | disc->track[track_id].offset = ntohl(etnf->offset); |
nkeynes@138 | 233 | disc->track[track_id].lba = ntohl(etnf->lba) + (i+1)*GDROM_PREGAP; |
nkeynes@138 | 234 | disc->track[track_id].mode = nrg_track_mode( ntohl(etnf->mode) ); |
nkeynes@138 | 235 | if( disc->track[track_id].mode == -1 ) { |
nkeynes@138 | 236 | disc->close(disc); |
nkeynes@138 | 237 | return NULL; |
nkeynes@138 | 238 | } |
nkeynes@142 | 239 | if( disc->track[track_id].mode == GDROM_CDDA ) |
nkeynes@142 | 240 | disc->track[track_id].flags = 0x01; |
nkeynes@142 | 241 | else |
nkeynes@142 | 242 | disc->track[track_id].flags = 0x01 | TRACK_DATA; |
nkeynes@138 | 243 | disc->track[track_id].sector_size = GDROM_SECTOR_SIZE(disc->track[track_id].mode); |
nkeynes@138 | 244 | disc->track[track_id].sector_count = ntohl(etnf->length) / |
nkeynes@138 | 245 | disc->track[track_id].sector_size; |
nkeynes@138 | 246 | track_id++; |
nkeynes@138 | 247 | } |
nkeynes@138 | 248 | break; |
nkeynes@138 | 249 | case END_ID: |
nkeynes@138 | 250 | end = TRUE; |
nkeynes@138 | 251 | break; |
nkeynes@138 | 252 | } |
nkeynes@138 | 253 | } while( !end ); |
nkeynes@138 | 254 | disc->track_count = track_id; |
nkeynes@138 | 255 | return disc; |
nkeynes@138 | 256 | } |
nkeynes@138 | 257 | |
nkeynes@138 | 258 | gboolean nrg_read_sectors( struct gdrom_disc *disc, uint32_t lba, uint32_t count, char *buf ) |
nkeynes@138 | 259 | { |
nkeynes@138 | 260 | return FALSE; |
nkeynes@138 | 261 | } |
nkeynes@138 | 262 |
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