Pico/cd/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) PicoCDLoadProgressCB(1);
  77
  78         Unload_ISO();
  79
  80         /* is this .cue? */
  81         ret = strlen(cd_img_name);
  82         if (ret >= 3 && strcasecmp(cd_img_name + ret - 3, "cue") == 0)
  83                 cue_data = cue_parse(cd_img_name);
  84         if (cue_data != NULL)
  85                 cd_img_name = cue_data->tracks[1].fname;
  86
  87         Tracks[0].ftype = type == CIT_BIN ? TYPE_BIN : TYPE_ISO;
  88
  89         Tracks[0].F = pmf = pm_open(cd_img_name);
  90         if (Tracks[0].F == NULL)
  91         {
  92                 Tracks[0].ftype = 0;
  93                 Tracks[0].Length = 0;
  94                 if (cue_data != NULL)
  95                         cue_destroy(cue_data);
  96                 return -1;
  97         }
  98
  99         if (Tracks[0].ftype == TYPE_ISO)
 100              cd_img_sectors = pmf->size >>= 11; // size in sectors
 101         else cd_img_sectors = pmf->size /= 2352;
 102         Tracks[0].Offset = 0;
 103
 104         Tracks[0].MSF.M = 0; // minutes
 105         Tracks[0].MSF.S = 2; // seconds
 106         Tracks[0].MSF.F = 0; // frames
 107
 108         elprintf(EL_STATUS, "Track  1: %02d:%02d:%02d %9i DATA",
 109                 Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F, Tracks[0].Length);
 110
 111         Cur_LBA = Tracks[0].Length = cd_img_sectors;
 112
 113         if (cue_data != NULL)
 114         {
 115                 if (cue_data->tracks[2].fname == NULL) { // NULL means track2 is in same file as track1
 116                         Cur_LBA = Tracks[0].Length = cue_data->tracks[2].sector_offset;
 117                 }
 118                 i = 100 / cue_data->track_count+1;
 119                 for (num_track = 2; num_track <= cue_data->track_count; num_track++)
 120                 {
 121                         if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(i * num_track);
 122                         index = num_track - 1;
 123                         Cur_LBA += cue_data->tracks[num_track].pregap;
 124                         if (cue_data->tracks[num_track].type == CT_MP3) {
 125                                 ret = audio_track_mp3(cue_data->tracks[num_track].fname, index);
 126                                 if (ret != 0) break;
 127                         }
 128                         else
 129                         {
 130                                 Tracks[index].ftype = cue_data->tracks[num_track].type;
 131                                 if (cue_data->tracks[num_track].fname != NULL)
 132                                 {
 133                                         pm_file *pmfn = pm_open(cue_data->tracks[num_track].fname);
 134                                         if (pmfn != NULL)
 135                                         {
 136                                                 // addume raw, ignore header for wav..
 137                                                 Tracks[index].F = pmfn;
 138                                                 Tracks[index].Length = pmfn->size / 2352;
 139                                                 Tracks[index].Offset = cue_data->tracks[num_track].sector_offset;
 140                                         }
 141                                         else
 142                                         {
 143                                                 elprintf(EL_STATUS, "track %2i (%s): can't determine length",
 144                                                         num_track, cue_data->tracks[num_track].fname);
 145                                                 Tracks[index].Length = 2*75;
 146                                                 Tracks[index].Offset = 0;
 147                                         }
 148                                 }
 149                                 else
 150                                 {
 151                                         if (num_track < cue_data->track_count)
 152                                                 Tracks[index].Length = cue_data->tracks[num_track+1].sector_offset -
 153                                                         cue_data->tracks[num_track].sector_offset;
 154                                         else
 155                                                 Tracks[index].Length = cd_img_sectors - cue_data->tracks[num_track].sector_offset;
 156                                         Tracks[index].Offset = cue_data->tracks[num_track].sector_offset;
 157                                 }
 158                         }
 159
 160                         if (cue_data->tracks[num_track].sector_xlength != 0)
 161                                 // overriden by custom cue command
 162                                 Tracks[index].Length = cue_data->tracks[num_track].sector_xlength;
 163
 164                         LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 165                         Cur_LBA += Tracks[index].Length;
 166
 167                         elprintf(EL_STATUS, "Track %2i: %02d:%02d:%02d %9i AUDIO - %s", num_track, Tracks[index].MSF.M,
 168                                 Tracks[index].MSF.S, Tracks[index].MSF.F, Tracks[index].Length,
 169                                 cue_data->tracks[num_track].fname);
 170                 }
 171                 cue_destroy(cue_data);
 172                 goto finish;
 173         }
 174
 175         /* mp3 track autosearch, Gens-like */
 176         iso_name_len = strlen(cd_img_name);
 177         if (iso_name_len >= sizeof(tmp_name))
 178                 iso_name_len = sizeof(tmp_name) - 1;
 179
 180         for (num_track = 2, i = 0, missed = 0; i < 100 && missed < 4; i++)
 181         {
 182                 if (PicoCDLoadProgressCB != NULL && i > 1) PicoCDLoadProgressCB(i + (100-i)*missed/4);
 183
 184                 for (j = 0; j < sizeof(exts)/sizeof(char *); j++)
 185                 {
 186                         int ext_len;
 187                         sprintf(tmp_ext, exts[j], i);
 188                         ext_len = strlen(tmp_ext);
 189
 190                         memcpy(tmp_name, cd_img_name, iso_name_len + 1);
 191                         tmp_name[iso_name_len - 4] = 0;
 192                         strcat(tmp_name, tmp_ext);
 193
 194                         index = num_track - 1;
 195                         ret = audio_track_mp3(tmp_name, index);
 196                         if (ret != 0 && i > 1 && iso_name_len > ext_len) {
 197                                 tmp_name[iso_name_len - ext_len] = 0;
 198                                 strcat(tmp_name, tmp_ext);
 199                                 ret = audio_track_mp3(tmp_name, index);
 200                         }
 201
 202                         if (ret == 0)
 203                         {
 204                                 LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 205                                 Cur_LBA += Tracks[index].Length;
 206
 207                                 elprintf(EL_STATUS, "Track %2i: %02d:%02d:%02d %9i AUDIO - %s", num_track, Tracks[index].MSF.M,
 208                                         Tracks[index].MSF.S, Tracks[index].MSF.F, Tracks[index].Length, tmp_name);
 209
 210                                 num_track++;
 211                                 missed = 0;
 212                                 break;
 213                         }
 214                 }
 215                 if (ret != 0 && i > 1) missed++;
 216         }
 217
 218 finish:
 219         Pico_mcd->TOC.Last_Track = num_track - 1;
 220
 221         index = num_track - 1;
 222
 223         LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 224
 225         elprintf(EL_STATUS, "End CD -  %02d:%02d:%02d\n", Tracks[index].MSF.M,
 226                 Tracks[index].MSF.S, Tracks[index].MSF.F);
 227
 228         if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(100);
 229
 230         return 0;
 231 }
 232
 233
 234 PICO_INTERNAL void Unload_ISO(void)
 235 {
 236         int i;
 237
 238         if (Pico_mcd == NULL) return;
 239
 240         if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F);
 241
 242         for(i = 1; i < 100; i++)
 243         {
 244                 if (Pico_mcd->TOC.Tracks[i].F != NULL)
 245                 {
 246                         if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_MP3)
 247 #if DONT_OPEN_MANY_FILES
 248                                 free(Pico_mcd->TOC.Tracks[i].F);
 249 #else
 250                                 fclose(Pico_mcd->TOC.Tracks[i].F);
 251 #endif
 252                         else
 253                                 pm_close(Pico_mcd->TOC.Tracks[i].F);
 254                 }
 255         }
 256         memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks));
 257 }
 258
 259
 260 PICO_INTERNAL int FILE_Read_One_LBA_CDC(void)
 261 {
 262         if (Pico_mcd->s68k_regs[0x36] & 1)                                      // DATA
 263         {
 264                 if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
 265
 266                 // moved below..
 267                 //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
 268                 //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
 269
 270                 cdprintf("Read file CDC 1 data sector :\n");
 271         }
 272         else                                                                    // AUDIO
 273         {
 274                 cdprintf("Read file CDC 1 audio sector :\n");
 275         }
 276
 277         // Update CDC stuff
 278
 279         CDC_Update_Header();
 280
 281         if (Pico_mcd->s68k_regs[0x36] & 1)              // DATA track
 282         {
 283                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 284                 {
 285                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 286                         {
 287                                 int where_read = 0;
 288
 289                                 // CAUTION : lookahead bit not implemented
 290
 291                                 if (Pico_mcd->scd.Cur_LBA < 0)
 292                                         where_read = 0;
 293                                 else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
 294                                         where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
 295                                 else where_read = Pico_mcd->scd.Cur_LBA;
 296
 297                                 Pico_mcd->scd.Cur_LBA++;
 298
 299                                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 300                                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 301
 302                                 *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N;
 303                                 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
 304
 305                                 //pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
 306                                 //pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
 307                                 PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read);
 308
 309                                 cdprintf("Read -> WA = %d  Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
 310                                 cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
 311                                         Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
 312                                 cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
 313                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
 314                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
 315                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
 316                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
 317                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
 318                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
 319                         }
 320
 321                 }
 322         }
 323         else            // music track
 324         {
 325                 Pico_mcd->scd.Cur_LBA++;
 326
 327                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 328                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 329
 330                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 331                 {
 332                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 333                         {
 334                                 // CAUTION : lookahead bit not implemented
 335
 336                                 // this is pretty rough, but oh well - not much depends on this anyway
 337                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cdda_out_buffer, 2352);
 338                         }
 339                 }
 340         }
 341
 342         if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 343         {
 344                 Pico_mcd->cdc.STAT.B.B0 = 0x80;
 345
 346                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x10)     // determine form bit form sub header ?
 347                 {
 348                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
 349                 }
 350                 else
 351                 {
 352                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
 353                 }
 354
 355                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20;     // ECC done
 356                 else Pico_mcd->cdc.STAT.B.B3 = 0x00;    // ECC not done
 357
 358                 if (Pico_mcd->cdc.IFCTRL & 0x20)
 359                 {
 360                         if (Pico_mcd->s68k_regs[0x33] & (1<<5))
 361                         {
 362                                 elprintf(EL_INTS, "cdc dec irq 5");
 363                                 SekInterruptS68k(5);
 364                         }
 365
 366                         Pico_mcd->cdc.IFSTAT &= ~0x20;          // DEC interrupt happen
 367                         Pico_mcd->cdc.Decode_Reg_Read = 0;      // Reset read after DEC int
 368                 }
 369         }
 370
 371
 372         return 0;
 373 }
 374