cd_file.c

   1 /***********************************************************
   2  *                                                         *
   3  * This source was taken from the Gens project             *
   4  * Written by Stéphane Dallongeville                       *
   5  * Copyright (c) 2002 by Stéphane Dallongeville            *
   6  * Modified/adapted for PicoDrive by notaz, 2007           *
   7  *                                                         *
   8  ***********************************************************/
   9
  10 #include "../pico_int.h"
  11 #include "cd_file.h"
  12 #include "cue.h"
  13
  14 //#define cdprintf(f,...) printf(f "\n",##__VA_ARGS__) // tmp
  15
  16 static int audio_track_mp3(const char *fname, int index)
  17 {
  18         _scd_track *Tracks = Pico_mcd->TOC.Tracks;
  19         FILE *tmp_file;
  20         int fs, ret;
  21
  22         tmp_file = fopen(fname, "rb");
  23         if (tmp_file == NULL)
  24                 return -1;
  25
  26         ret = fseek(tmp_file, 0, SEEK_END);
  27         fs = ftell(tmp_file);                           // used to calculate length
  28         fseek(tmp_file, 0, SEEK_SET);
  29
  30 #if DONT_OPEN_MANY_FILES
  31         // some systems (like PSP) can't have many open files at a time,
  32         // so we work with their names instead.
  33         fclose(tmp_file);
  34         tmp_file = (void *) strdup(fname);
  35 #endif
  36         Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
  37         Tracks[index].KBtps >>= 3;
  38         if (ret != 0 || Tracks[index].KBtps <= 0)
  39         {
  40                 elprintf(EL_STATUS, "track %2i: mp3 bitrate %i", index+1, Tracks[index].KBtps);
  41 #if !DONT_OPEN_MANY_FILES
  42                 fclose(tmp_file);
  43 #else
  44                 free(tmp_file);
  45 #endif
  46                 return -1;
  47         }
  48
  49         Tracks[index].F = tmp_file;
  50
  51         // MP3 File
  52         Tracks[index].ftype = TYPE_MP3;
  53         fs *= 75;
  54         fs /= Tracks[index].KBtps * 1000;
  55         Tracks[index].Length = fs;
  56         Tracks[index].Offset = 0;
  57
  58         return 0;
  59 }
  60
  61 PICO_INTERNAL int Load_CD_Image(const char *cd_img_name, cd_img_type type)
  62 {
  63         int i, j, num_track, Cur_LBA, index, ret, iso_name_len, missed, cd_img_sectors;
  64         _scd_track *Tracks = Pico_mcd->TOC.Tracks;
  65         char tmp_name[1024], tmp_ext[10];
  66         cue_data_t *cue_data = NULL;
  67         pm_file *pmf;
  68         static char *exts[] = {
  69                 "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
  70                 "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
  71 #if CASE_SENSITIVE_FS
  72                 "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3",
  73 #endif
  74         };
  75
  76         if (PicoCDLoadProgressCB != NULL)
  77                 PicoCDLoadProgressCB(cd_img_name, 1);
  78
  79         Unload_ISO();
  80
  81         /* is this .cue? */
  82         ret = strlen(cd_img_name);
  83         if (ret >= 3 && strcasecmp(cd_img_name + ret - 3, "cue") == 0)
  84                 cue_data = cue_parse(cd_img_name);
  85         if (cue_data != NULL)
  86                 cd_img_name = cue_data->tracks[1].fname;
  87
  88         Tracks[0].ftype = type == CIT_BIN ? TYPE_BIN : TYPE_ISO;
  89
  90         Tracks[0].F = pmf = pm_open(cd_img_name);
  91         if (Tracks[0].F == NULL)
  92         {
  93                 Tracks[0].ftype = 0;
  94                 Tracks[0].Length = 0;
  95                 if (cue_data != NULL)
  96                         cue_destroy(cue_data);
  97                 return -1;
  98         }
  99
 100         if (Tracks[0].ftype == TYPE_ISO)
 101              cd_img_sectors = pmf->size >>= 11; // size in sectors
 102         else cd_img_sectors = pmf->size /= 2352;
 103         Tracks[0].Offset = 0;
 104
 105         Tracks[0].MSF.M = 0; // minutes
 106         Tracks[0].MSF.S = 2; // seconds
 107         Tracks[0].MSF.F = 0; // frames
 108
 109         elprintf(EL_STATUS, "Track  1: %02d:%02d:%02d %9i DATA",
 110                 Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F, Tracks[0].Length);
 111
 112         Cur_LBA = Tracks[0].Length = cd_img_sectors;
 113
 114         if (cue_data != NULL)
 115         {
 116                 if (cue_data->tracks[2].fname == NULL) { // NULL means track2 is in same file as track1
 117                         Cur_LBA = Tracks[0].Length = cue_data->tracks[2].sector_offset;
 118                 }
 119                 i = 100 / cue_data->track_count+1;
 120                 for (num_track = 2; num_track <= cue_data->track_count; num_track++)
 121                 {
 122                         if (PicoCDLoadProgressCB != NULL)
 123                                 PicoCDLoadProgressCB(cd_img_name, i * num_track);
 124                         index = num_track - 1;
 125                         Cur_LBA += cue_data->tracks[num_track].pregap;
 126                         if (cue_data->tracks[num_track].type == CT_MP3) {
 127                                 ret = audio_track_mp3(cue_data->tracks[num_track].fname, index);
 128                                 if (ret != 0) break;
 129                         }
 130                         else
 131                         {
 132                                 Tracks[index].ftype = cue_data->tracks[num_track].type;
 133                                 if (cue_data->tracks[num_track].fname != NULL)
 134                                 {
 135                                         pm_file *pmfn = pm_open(cue_data->tracks[num_track].fname);
 136                                         if (pmfn != NULL)
 137                                         {
 138                                                 // addume raw, ignore header for wav..
 139                                                 Tracks[index].F = pmfn;
 140                                                 Tracks[index].Length = pmfn->size / 2352;
 141                                                 Tracks[index].Offset = cue_data->tracks[num_track].sector_offset;
 142                                         }
 143                                         else
 144                                         {
 145                                                 elprintf(EL_STATUS, "track %2i (%s): can't determine length",
 146                                                         num_track, cue_data->tracks[num_track].fname);
 147                                                 Tracks[index].Length = 2*75;
 148                                                 Tracks[index].Offset = 0;
 149                                         }
 150                                 }
 151                                 else
 152                                 {
 153                                         if (num_track < cue_data->track_count)
 154                                                 Tracks[index].Length = cue_data->tracks[num_track+1].sector_offset -
 155                                                         cue_data->tracks[num_track].sector_offset;
 156                                         else
 157                                                 Tracks[index].Length = cd_img_sectors - cue_data->tracks[num_track].sector_offset;
 158                                         Tracks[index].Offset = cue_data->tracks[num_track].sector_offset;
 159                                 }
 160                         }
 161
 162                         if (cue_data->tracks[num_track].sector_xlength != 0)
 163                                 // overriden by custom cue command
 164                                 Tracks[index].Length = cue_data->tracks[num_track].sector_xlength;
 165
 166                         LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 167                         Cur_LBA += Tracks[index].Length;
 168
 169                         elprintf(EL_STATUS, "Track %2i: %02d:%02d:%02d %9i AUDIO - %s", num_track, Tracks[index].MSF.M,
 170                                 Tracks[index].MSF.S, Tracks[index].MSF.F, Tracks[index].Length,
 171                                 cue_data->tracks[num_track].fname);
 172                 }
 173                 cue_destroy(cue_data);
 174                 goto finish;
 175         }
 176
 177         /* mp3 track autosearch, Gens-like */
 178         iso_name_len = strlen(cd_img_name);
 179         if (iso_name_len >= sizeof(tmp_name))
 180                 iso_name_len = sizeof(tmp_name) - 1;
 181
 182         for (num_track = 2, i = 0, missed = 0; i < 100 && missed < 4; i++)
 183         {
 184                 if (PicoCDLoadProgressCB != NULL && i > 1)
 185                         PicoCDLoadProgressCB(cd_img_name, i + (100-i)*missed/4);
 186
 187                 for (j = 0; j < sizeof(exts)/sizeof(char *); j++)
 188                 {
 189                         int ext_len;
 190                         sprintf(tmp_ext, exts[j], i);
 191                         ext_len = strlen(tmp_ext);
 192
 193                         memcpy(tmp_name, cd_img_name, iso_name_len + 1);
 194                         tmp_name[iso_name_len - 4] = 0;
 195                         strcat(tmp_name, tmp_ext);
 196
 197                         index = num_track - 1;
 198                         ret = audio_track_mp3(tmp_name, index);
 199                         if (ret != 0 && i > 1 && iso_name_len > ext_len) {
 200                                 tmp_name[iso_name_len - ext_len] = 0;
 201                                 strcat(tmp_name, tmp_ext);
 202                                 ret = audio_track_mp3(tmp_name, index);
 203                         }
 204
 205                         if (ret == 0)
 206                         {
 207                                 LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 208                                 Cur_LBA += Tracks[index].Length;
 209
 210                                 elprintf(EL_STATUS, "Track %2i: %02d:%02d:%02d %9i AUDIO - %s", num_track, Tracks[index].MSF.M,
 211                                         Tracks[index].MSF.S, Tracks[index].MSF.F, Tracks[index].Length, tmp_name);
 212
 213                                 num_track++;
 214                                 missed = 0;
 215                                 break;
 216                         }
 217                 }
 218                 if (ret != 0 && i > 1) missed++;
 219         }
 220
 221 finish:
 222         Pico_mcd->TOC.Last_Track = num_track - 1;
 223
 224         index = num_track - 1;
 225
 226         LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 227
 228         elprintf(EL_STATUS, "End CD -  %02d:%02d:%02d\n", Tracks[index].MSF.M,
 229                 Tracks[index].MSF.S, Tracks[index].MSF.F);
 230
 231         if (PicoCDLoadProgressCB != NULL)
 232                 PicoCDLoadProgressCB(cd_img_name, 100);
 233
 234         return 0;
 235 }
 236
 237
 238 PICO_INTERNAL void Unload_ISO(void)
 239 {
 240         int i;
 241
 242         if (Pico_mcd == NULL) return;
 243
 244         if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F);
 245
 246         for(i = 1; i < 100; i++)
 247         {
 248                 if (Pico_mcd->TOC.Tracks[i].F != NULL)
 249                 {
 250                         if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_MP3)
 251 #if DONT_OPEN_MANY_FILES
 252                                 free(Pico_mcd->TOC.Tracks[i].F);
 253 #else
 254                                 fclose(Pico_mcd->TOC.Tracks[i].F);
 255 #endif
 256                         else
 257                                 pm_close(Pico_mcd->TOC.Tracks[i].F);
 258                 }
 259         }
 260         memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks));
 261 }
 262
 263
 264 PICO_INTERNAL int FILE_Read_One_LBA_CDC(void)
 265 {
 266         if (Pico_mcd->s68k_regs[0x36] & 1)                                      // DATA
 267         {
 268                 if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
 269
 270                 // moved below..
 271                 //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
 272                 //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
 273
 274                 cdprintf("Read file CDC 1 data sector :\n");
 275         }
 276         else                                                                    // AUDIO
 277         {
 278                 cdprintf("Read file CDC 1 audio sector :\n");
 279         }
 280
 281         // Update CDC stuff
 282
 283         CDC_Update_Header();
 284
 285         if (Pico_mcd->s68k_regs[0x36] & 1)              // DATA track
 286         {
 287                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 288                 {
 289                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 290                         {
 291                                 int where_read = 0;
 292
 293                                 // CAUTION : lookahead bit not implemented
 294
 295                                 if (Pico_mcd->scd.Cur_LBA < 0)
 296                                         where_read = 0;
 297                                 else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
 298                                         where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
 299                                 else where_read = Pico_mcd->scd.Cur_LBA;
 300
 301                                 Pico_mcd->scd.Cur_LBA++;
 302
 303                                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 304                                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 305
 306                                 *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N;
 307                                 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
 308
 309                                 //pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
 310                                 //pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
 311                                 PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read);
 312
 313                                 cdprintf("Read -> WA = %d  Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
 314                                 cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
 315                                         Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
 316                                 cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
 317                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
 318                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
 319                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
 320                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
 321                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
 322                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
 323                         }
 324
 325                 }
 326         }
 327         else            // music track
 328         {
 329                 Pico_mcd->scd.Cur_LBA++;
 330
 331                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 332                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 333
 334                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 335                 {
 336                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 337                         {
 338                                 // CAUTION : lookahead bit not implemented
 339
 340                                 // this is pretty rough, but oh well - not much depends on this anyway
 341                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cdda_out_buffer, 2352);
 342                         }
 343                 }
 344         }
 345
 346         if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 347         {
 348                 Pico_mcd->cdc.STAT.B.B0 = 0x80;
 349
 350                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x10)     // determine form bit form sub header ?
 351                 {
 352                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
 353                 }
 354                 else
 355                 {
 356                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
 357                 }
 358
 359                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20;     // ECC done
 360                 else Pico_mcd->cdc.STAT.B.B3 = 0x00;    // ECC not done
 361
 362                 if (Pico_mcd->cdc.IFCTRL & 0x20)
 363                 {
 364                         if (Pico_mcd->s68k_regs[0x33] & (1<<5))
 365                         {
 366                                 elprintf(EL_INTS, "cdc dec irq 5");
 367                                 SekInterruptS68k(5);
 368                         }
 369
 370                         Pico_mcd->cdc.IFSTAT &= ~0x20;          // DEC interrupt happen
 371                         Pico_mcd->cdc.Decode_Reg_Read = 0;      // Reset read after DEC int
 372                 }
 373         }
 374
 375
 376         return 0;
 377 }
 378