| 1 | /* |
| 2 | * Copyright (c) 2010, Wei Mingzhi <whistler@openoffice.org>. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * Based on: Cdrom for Psemu Pro like Emulators |
| 6 | * By: linuzappz <linuzappz@hotmail.com> |
| 7 | * |
| 8 | * Portions based on: cdrdao - write audio CD-Rs in disc-at-once mode |
| 9 | * Copyright (C) 2007 Denis Leroy <denis@poolshark.org> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, see <http://www.gnu.org/licenses>. |
| 23 | */ |
| 24 | |
| 25 | #if defined (__linux__) && !defined (USE_LIBCDIO) |
| 26 | |
| 27 | #include "cdr.h" |
| 28 | |
| 29 | static int cdHandle = -1; |
| 30 | static int ReadMMC = 0, SubQMMC = 0; |
| 31 | |
| 32 | static int SendMMCCmd(const unsigned char *cmd, int cmdLen, const unsigned char *dataOut, |
| 33 | int dataOutLen, unsigned char *dataIn, int dataInLen) |
| 34 | { |
| 35 | sg_io_hdr_t io_hdr; |
| 36 | |
| 37 | memset(&io_hdr, 0, sizeof(io_hdr)); |
| 38 | |
| 39 | io_hdr.interface_id = 'S'; |
| 40 | io_hdr.cmd_len = cmdLen; |
| 41 | io_hdr.cmdp = (unsigned char *)cmd; |
| 42 | io_hdr.timeout = 10000; |
| 43 | io_hdr.sbp = NULL; |
| 44 | io_hdr.mx_sb_len = 0; |
| 45 | io_hdr.flags = 1; |
| 46 | |
| 47 | if (dataOut != NULL) { |
| 48 | io_hdr.dxferp = (void *)dataOut; |
| 49 | io_hdr.dxfer_len = dataOutLen; |
| 50 | io_hdr.dxfer_direction = SG_DXFER_TO_DEV; |
| 51 | } else if (dataIn != NULL) { |
| 52 | io_hdr.dxferp = (void *)dataIn; |
| 53 | io_hdr.dxfer_len = dataInLen; |
| 54 | io_hdr.dxfer_direction = SG_DXFER_FROM_DEV; |
| 55 | } |
| 56 | |
| 57 | if (ioctl(cdHandle, SG_IO, &io_hdr) < 0) { |
| 58 | return -1; |
| 59 | } |
| 60 | |
| 61 | return io_hdr.status; |
| 62 | } |
| 63 | |
| 64 | static int CheckReadMMC() { |
| 65 | MMC_READ_CD cdb; |
| 66 | unsigned char buf[CD_FRAMESIZE_RAW]; |
| 67 | |
| 68 | memset(&cdb, 0, sizeof(cdb)); |
| 69 | memset(buf, 0xAA, sizeof(buf)); |
| 70 | |
| 71 | cdb.Code = GPCMD_READ_CD; |
| 72 | cdb.IncludeEDC = 0; |
| 73 | cdb.IncludeUserData = 1; |
| 74 | cdb.HeaderCode = 3; |
| 75 | cdb.IncludeSyncData = 1; |
| 76 | cdb.TransferBlocks[2] = 1; |
| 77 | |
| 78 | if (SendMMCCmd((unsigned char *)&cdb, sizeof(cdb), NULL, 0, buf, sizeof(buf)) == 0) { |
| 79 | if (buf[0] != 0xAA) { |
| 80 | PRINTF("Using MMC for data\n"); |
| 81 | return 1; // supported |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | return 0; // NOT supported |
| 86 | } |
| 87 | |
| 88 | static int CheckSubQMMC() { |
| 89 | MMC_READ_CD cdb; |
| 90 | unsigned char buf[CD_FRAMESIZE_RAW + 96]; |
| 91 | |
| 92 | memset(&cdb, 0, sizeof(cdb)); |
| 93 | memset(buf, 0xAA, sizeof(buf)); |
| 94 | |
| 95 | cdb.Code = GPCMD_READ_CD; |
| 96 | cdb.IncludeEDC = 1; |
| 97 | cdb.IncludeUserData = 1; |
| 98 | cdb.HeaderCode = 3; |
| 99 | cdb.IncludeSyncData = 1; |
| 100 | cdb.SubChannelSelection = 1; |
| 101 | cdb.TransferBlocks[2] = 1; |
| 102 | |
| 103 | if (SendMMCCmd((unsigned char *)&cdb, sizeof(cdb), NULL, 0, buf, sizeof(buf)) == 0) { |
| 104 | if (buf[0] != 0xAA && (buf[2352] != 0xAA || buf[2353] != 0xAA)) { |
| 105 | PRINTF("Using MMC for subchannel\n"); |
| 106 | return 1; // supported |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | return 0; // NOT supported |
| 111 | } |
| 112 | |
| 113 | int OpenCdHandle(const char *dev) { |
| 114 | char spindown; |
| 115 | |
| 116 | cdHandle = open(dev, O_RDONLY); |
| 117 | |
| 118 | if (cdHandle != -1) { |
| 119 | ioctl(cdHandle, CDROM_LOCKDOOR, 0); |
| 120 | |
| 121 | spindown = (char)SpinDown; |
| 122 | ioctl(cdHandle, CDROMSETSPINDOWN, &spindown); |
| 123 | |
| 124 | ioctl(cdHandle, CDROM_SELECT_SPEED, CdrSpeed); |
| 125 | |
| 126 | ReadMMC = CheckReadMMC(); |
| 127 | SubQMMC = CheckSubQMMC(); |
| 128 | |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | return -1; |
| 133 | } |
| 134 | |
| 135 | void CloseCdHandle() { |
| 136 | char spindown = SPINDOWN_VENDOR_SPECIFIC; |
| 137 | ioctl(cdHandle, CDROMSETSPINDOWN, &spindown); |
| 138 | |
| 139 | close(cdHandle); |
| 140 | |
| 141 | cdHandle = -1; |
| 142 | } |
| 143 | |
| 144 | int IsCdHandleOpen() { |
| 145 | return (cdHandle != -1); |
| 146 | } |
| 147 | |
| 148 | long GetTN(unsigned char *buffer) { |
| 149 | struct cdrom_tochdr toc; |
| 150 | |
| 151 | if (ioctl(cdHandle, CDROMREADTOCHDR, &toc) == -1) |
| 152 | return -1; |
| 153 | |
| 154 | buffer[0] = toc.cdth_trk0; // start track |
| 155 | buffer[1] = toc.cdth_trk1; // end track |
| 156 | |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | long GetTD(unsigned char track, unsigned char *buffer) { |
| 161 | struct cdrom_tocentry entry; |
| 162 | |
| 163 | if (track == 0) |
| 164 | track = 0xAA; // total time (leadout) |
| 165 | entry.cdte_track = track; |
| 166 | entry.cdte_format = CDROM_MSF; |
| 167 | |
| 168 | if (ioctl(cdHandle, CDROMREADTOCENTRY, &entry) == -1) |
| 169 | return -1; |
| 170 | |
| 171 | buffer[0] = entry.cdte_addr.msf.frame; |
| 172 | buffer[1] = entry.cdte_addr.msf.second; |
| 173 | buffer[2] = entry.cdte_addr.msf.minute; |
| 174 | |
| 175 | return 0; |
| 176 | } |
| 177 | |
| 178 | long GetTE(unsigned char track, unsigned char *m, unsigned char *s, unsigned char *f) { |
| 179 | struct cdrom_tocentry entry; |
| 180 | unsigned char msf[3]; |
| 181 | |
| 182 | if (GetTN(msf) == -1) return -1; |
| 183 | |
| 184 | entry.cdte_track = track + 1; |
| 185 | if (entry.cdte_track > msf[1]) entry.cdte_track = 0xaa; |
| 186 | |
| 187 | entry.cdte_format = CDROM_MSF; |
| 188 | |
| 189 | if (ioctl(cdHandle, CDROMREADTOCENTRY, &entry) == -1) |
| 190 | return -1; |
| 191 | |
| 192 | lba_to_msf(msf_to_lba(entry.cdte_addr.msf.minute, entry.cdte_addr.msf.second, entry.cdte_addr.msf.frame) - CD_MSF_OFFSET, msf); |
| 193 | |
| 194 | *m = msf[0]; |
| 195 | *s = msf[1]; |
| 196 | *f = msf[2]; |
| 197 | |
| 198 | return 0; |
| 199 | } |
| 200 | |
| 201 | long ReadSector(crdata *cr) { |
| 202 | if (ReadMMC) { |
| 203 | MMC_READ_CD cdb; |
| 204 | int lba; |
| 205 | |
| 206 | memset(&cdb, 0, sizeof(cdb)); |
| 207 | |
| 208 | lba = msf_to_lba(cr->msf.cdmsf_min0, cr->msf.cdmsf_sec0, cr->msf.cdmsf_frame0); |
| 209 | |
| 210 | cdb.Code = GPCMD_READ_CD; |
| 211 | cdb.IncludeEDC = 1; |
| 212 | cdb.IncludeUserData = 1; |
| 213 | cdb.HeaderCode = 3; |
| 214 | cdb.IncludeSyncData = 1; |
| 215 | cdb.SubChannelSelection = 0; |
| 216 | cdb.StartingLBA[1] = lba >> 16; |
| 217 | cdb.StartingLBA[2] = lba >> 8; |
| 218 | cdb.StartingLBA[3] = lba; |
| 219 | cdb.TransferBlocks[2] = 1; |
| 220 | |
| 221 | if (SendMMCCmd((unsigned char *)&cdb, sizeof(cdb), NULL, 0, (unsigned char *)cr, sizeof(*cr)) != 0) |
| 222 | return -1; |
| 223 | } else { |
| 224 | if (ioctl(cdHandle, CDROMREADRAW, cr) == -1) |
| 225 | return -1; |
| 226 | } |
| 227 | |
| 228 | return 0; |
| 229 | } |
| 230 | |
| 231 | long PlayCDDA(unsigned char *sector) { |
| 232 | struct cdrom_msf addr; |
| 233 | unsigned char ptmp[4]; |
| 234 | |
| 235 | // 0 is the last track of every cdrom, so play up to there |
| 236 | if (GetTD(0, ptmp) == -1) |
| 237 | return -1; |
| 238 | |
| 239 | addr.cdmsf_min0 = sector[0]; |
| 240 | addr.cdmsf_sec0 = sector[1]; |
| 241 | addr.cdmsf_frame0 = sector[2]; |
| 242 | addr.cdmsf_min1 = ptmp[2]; |
| 243 | addr.cdmsf_sec1 = ptmp[1]; |
| 244 | addr.cdmsf_frame1 = ptmp[0]; |
| 245 | |
| 246 | if (ioctl(cdHandle, CDROMPLAYMSF, &addr) == -1) |
| 247 | return -1; |
| 248 | |
| 249 | return 0; |
| 250 | } |
| 251 | |
| 252 | long StopCDDA() { |
| 253 | struct cdrom_subchnl sc; |
| 254 | |
| 255 | sc.cdsc_format = CDROM_MSF; |
| 256 | if (ioctl(cdHandle, CDROMSUBCHNL, &sc) == -1) |
| 257 | return -1; |
| 258 | |
| 259 | switch (sc.cdsc_audiostatus) { |
| 260 | case CDROM_AUDIO_PAUSED: |
| 261 | case CDROM_AUDIO_PLAY: |
| 262 | ioctl(cdHandle, CDROMSTOP); |
| 263 | break; |
| 264 | } |
| 265 | |
| 266 | return 0; |
| 267 | } |
| 268 | |
| 269 | long GetStatus(int playing, struct CdrStat *stat) { |
| 270 | struct cdrom_subchnl sc; |
| 271 | int ret; |
| 272 | char spindown; |
| 273 | |
| 274 | memset(stat, 0, sizeof(struct CdrStat)); |
| 275 | |
| 276 | if (playing) { // return Time only if playing |
| 277 | sc.cdsc_format = CDROM_MSF; |
| 278 | if (ioctl(cdHandle, CDROMSUBCHNL, &sc) != -1) |
| 279 | memcpy(stat->Time, &sc.cdsc_absaddr.msf, 3); |
| 280 | } |
| 281 | |
| 282 | ret = ioctl(cdHandle, CDROM_DISC_STATUS); |
| 283 | switch (ret) { |
| 284 | case CDS_AUDIO: |
| 285 | stat->Type = 0x02; |
| 286 | break; |
| 287 | case CDS_DATA_1: |
| 288 | case CDS_DATA_2: |
| 289 | case CDS_XA_2_1: |
| 290 | case CDS_XA_2_2: |
| 291 | stat->Type = 0x01; |
| 292 | break; |
| 293 | } |
| 294 | ret = ioctl(cdHandle, CDROM_DRIVE_STATUS); |
| 295 | switch (ret) { |
| 296 | case CDS_NO_DISC: |
| 297 | case CDS_TRAY_OPEN: |
| 298 | stat->Type = 0xff; |
| 299 | stat->Status |= 0x10; |
| 300 | break; |
| 301 | default: |
| 302 | spindown = (char)SpinDown; |
| 303 | ioctl(cdHandle, CDROMSETSPINDOWN, &spindown); |
| 304 | ioctl(cdHandle, CDROM_SELECT_SPEED, CdrSpeed); |
| 305 | ioctl(cdHandle, CDROM_LOCKDOOR, 0); |
| 306 | break; |
| 307 | } |
| 308 | |
| 309 | switch (sc.cdsc_audiostatus) { |
| 310 | case CDROM_AUDIO_PLAY: |
| 311 | stat->Status |= 0x80; |
| 312 | break; |
| 313 | } |
| 314 | |
| 315 | return 0; |
| 316 | } |
| 317 | |
| 318 | static unsigned char *ReadSubMMC(const unsigned char *time) { |
| 319 | static unsigned char buf[CD_FRAMESIZE_RAW + 96]; |
| 320 | int lba = msf_to_lba(btoi(time[0]), btoi(time[1]), btoi(time[2])); |
| 321 | MMC_READ_CD cdb; |
| 322 | |
| 323 | memset(&cdb, 0, sizeof(cdb)); |
| 324 | |
| 325 | cdb.Code = GPCMD_READ_CD; |
| 326 | cdb.IncludeEDC = 1; |
| 327 | cdb.IncludeUserData = 1; |
| 328 | cdb.HeaderCode = 3; |
| 329 | cdb.IncludeSyncData = 1; |
| 330 | cdb.StartingLBA[1] = lba >> 16; |
| 331 | cdb.StartingLBA[2] = lba >> 8; |
| 332 | cdb.StartingLBA[3] = lba; |
| 333 | cdb.TransferBlocks[2] = 1; |
| 334 | cdb.SubChannelSelection = 1; |
| 335 | |
| 336 | if (SendMMCCmd((unsigned char *)&cdb, sizeof(cdb), NULL, 0, buf, sizeof(buf)) != 0) |
| 337 | return NULL; |
| 338 | |
| 339 | DecodeRawSubData(buf + CD_FRAMESIZE_RAW); |
| 340 | return buf + CD_FRAMESIZE_RAW; |
| 341 | } |
| 342 | |
| 343 | static unsigned char *ReadSubIOCTL(const unsigned char *time) { |
| 344 | static struct SubQ subq; |
| 345 | struct cdrom_subchnl subchnl; |
| 346 | int r; |
| 347 | crdata cr; |
| 348 | unsigned short crc; |
| 349 | |
| 350 | cr.msf.cdmsf_min0 = btoi(time[0]); |
| 351 | cr.msf.cdmsf_sec0 = btoi(time[1]); |
| 352 | cr.msf.cdmsf_frame0 = btoi(time[2]); |
| 353 | |
| 354 | if (ioctl(cdHandle, CDROMSEEK, &cr.msf) == -1) { |
| 355 | // will be slower, but there's no other way to make it accurate |
| 356 | if (ioctl(cdHandle, CDROMREADRAW, &cr) == -1) { |
| 357 | return NULL; |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | subchnl.cdsc_format = CDROM_MSF; |
| 362 | r = ioctl(cdHandle, CDROMSUBCHNL, &subchnl); |
| 363 | |
| 364 | if (r == -1) return NULL; |
| 365 | |
| 366 | subq.ControlAndADR = 0x41; |
| 367 | subq.TrackNumber = subchnl.cdsc_trk; |
| 368 | subq.IndexNumber = subchnl.cdsc_ind; |
| 369 | subq.TrackRelativeAddress[0] = itob(subchnl.cdsc_reladdr.msf.minute); |
| 370 | subq.TrackRelativeAddress[1] = itob(subchnl.cdsc_reladdr.msf.second); |
| 371 | subq.TrackRelativeAddress[2] = itob(subchnl.cdsc_reladdr.msf.frame); |
| 372 | subq.AbsoluteAddress[0] = itob(subchnl.cdsc_absaddr.msf.minute); |
| 373 | subq.AbsoluteAddress[1] = itob(subchnl.cdsc_absaddr.msf.second); |
| 374 | subq.AbsoluteAddress[2] = itob(subchnl.cdsc_absaddr.msf.frame); |
| 375 | |
| 376 | // CRC is not supported with IOCTL, fake it. |
| 377 | crc = calcCrc((unsigned char *)&subq + 12, 10); |
| 378 | subq.CRC[0] = (crc >> 8); |
| 379 | subq.CRC[1] = (crc & 0xFF); |
| 380 | |
| 381 | r = msf_to_lba(btoi(time[0]), btoi(time[1]), btoi(time[2])); |
| 382 | |
| 383 | if (GetTE(1, &cr.msf.cdmsf_min0, &cr.msf.cdmsf_sec0, &cr.msf.cdmsf_frame0) == -1) { |
| 384 | cr.msf.cdmsf_min0 = 80; |
| 385 | cr.msf.cdmsf_sec0 = 0; |
| 386 | cr.msf.cdmsf_frame0 = 0; |
| 387 | } |
| 388 | |
| 389 | if (msf_to_lba(cr.msf.cdmsf_min0, cr.msf.cdmsf_sec0, cr.msf.cdmsf_frame0) >= r && |
| 390 | (msf_to_lba(subchnl.cdsc_absaddr.msf.minute, subchnl.cdsc_absaddr.msf.second, subchnl.cdsc_absaddr.msf.frame) != r || |
| 391 | msf_to_lba(subchnl.cdsc_reladdr.msf.minute, subchnl.cdsc_reladdr.msf.second, subchnl.cdsc_reladdr.msf.frame) != r - CD_MSF_OFFSET)) |
| 392 | subq.CRC[1] ^= 1; // time mismatch; report wrong CRC |
| 393 | |
| 394 | PRINTF("subq : %x,%x : %x,%x,%x : %x,%x,%x\n", |
| 395 | subchnl.cdsc_trk, subchnl.cdsc_ind, |
| 396 | itob(subchnl.cdsc_reladdr.msf.minute), itob(subchnl.cdsc_reladdr.msf.second), itob(subchnl.cdsc_reladdr.msf.frame), |
| 397 | itob(subchnl.cdsc_absaddr.msf.minute), itob(subchnl.cdsc_absaddr.msf.second), itob(subchnl.cdsc_absaddr.msf.frame)); |
| 398 | |
| 399 | return (unsigned char *)&subq; |
| 400 | } |
| 401 | |
| 402 | unsigned char *ReadSub(const unsigned char *time) { |
| 403 | if (SubQMMC) return ReadSubMMC(time); |
| 404 | else return ReadSubIOCTL(time); |
| 405 | } |
| 406 | |
| 407 | #endif |