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 void to_upper(char *d, const char *s)
  17 {
  18         for (; *s != 0; d++, s++) {
  19                 if ('a' <= *s && *s <= 'z')
  20                         *d = *s - 'a' + 'A';
  21                 else
  22                         *d = *s;
  23         }
  24 }
  25
  26 static int audio_track_mp3(const char *fname, int index)
  27 {
  28         _scd_track *Tracks = Pico_mcd->TOC.Tracks;
  29         FILE *tmp_file;
  30         int fs, ret;
  31
  32         tmp_file = fopen(fname, "rb");
  33         if (tmp_file == NULL)
  34                 return -1;
  35
  36         ret = fseek(tmp_file, 0, SEEK_END);
  37         fs = ftell(tmp_file);                           // used to calculate length
  38         fseek(tmp_file, 0, SEEK_SET);
  39
  40 #ifdef _PSP_FW_VERSION
  41         // some systems (like PSP) can't have many open files at a time,
  42         // so we work with their names instead.
  43         fclose(tmp_file);
  44         tmp_file = (void *) strdup(fname);
  45 #endif
  46         Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
  47         Tracks[index].KBtps >>= 3;
  48         if (ret != 0 || Tracks[index].KBtps <= 0)
  49         {
  50                 elprintf(EL_STATUS, "track %2i: mp3 bitrate %i", index+1, Tracks[index].KBtps);
  51 #ifdef _PSP_FW_VERSION
  52                 free(tmp_file);
  53 #else
  54                 fclose(tmp_file);
  55 #endif
  56                 return -1;
  57         }
  58
  59         Tracks[index].F = tmp_file;
  60
  61         // MP3 File
  62         Tracks[index].ftype = TYPE_MP3;
  63         fs *= 75;
  64         fs /= Tracks[index].KBtps * 1000;
  65         Tracks[index].Length = fs;
  66         Tracks[index].Offset = 0;
  67
  68         return 0;
  69 }
  70
  71 PICO_INTERNAL int Load_CD_Image(const char *cd_img_name, cd_img_type type)
  72 {
  73         int i, j, num_track, Cur_LBA, index, ret, iso_name_len, missed, cd_img_sectors;
  74         _scd_track *Tracks = Pico_mcd->TOC.Tracks;
  75         char tmp_name[1024], tmp_ext[10], tmp_ext_u[10];
  76         cue_data_t *cue_data = NULL;
  77         pm_file *pmf;
  78         static const char *exts[] = {
  79                 "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
  80                 "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
  81         };
  82
  83         if (PicoCDLoadProgressCB != NULL)
  84                 PicoCDLoadProgressCB(cd_img_name, 1);
  85
  86         Unload_ISO();
  87
  88         /* is this .cue? */
  89         ret = strlen(cd_img_name);
  90         if (ret >= 3 && strcasecmp(cd_img_name + ret - 3, "cue") == 0)
  91                 cue_data = cue_parse(cd_img_name);
  92         if (cue_data != NULL)
  93                 cd_img_name = cue_data->tracks[1].fname;
  94
  95         Tracks[0].ftype = type == CIT_BIN ? TYPE_BIN : TYPE_ISO;
  96
  97         Tracks[0].F = pmf = pm_open(cd_img_name);
  98         if (Tracks[0].F == NULL)
  99         {
 100                 Tracks[0].ftype = 0;
 101                 Tracks[0].Length = 0;
 102                 if (cue_data != NULL)
 103                         cue_destroy(cue_data);
 104                 return -1;
 105         }
 106
 107         if (Tracks[0].ftype == TYPE_ISO)
 108              cd_img_sectors = pmf->size >>= 11; // size in sectors
 109         else cd_img_sectors = pmf->size /= 2352;
 110         Tracks[0].Offset = 0;
 111
 112         Tracks[0].MSF.M = 0; // minutes
 113         Tracks[0].MSF.S = 2; // seconds
 114         Tracks[0].MSF.F = 0; // frames
 115
 116         elprintf(EL_STATUS, "Track  1: %02d:%02d:%02d %9i DATA",
 117                 Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F, Tracks[0].Length);
 118
 119         Cur_LBA = Tracks[0].Length = cd_img_sectors;
 120
 121         if (cue_data != NULL)
 122         {
 123                 if (cue_data->tracks[2].fname == NULL) { // NULL means track2 is in same file as track1
 124                         Cur_LBA = Tracks[0].Length = cue_data->tracks[2].sector_offset;
 125                 }
 126                 i = 100 / cue_data->track_count+1;
 127                 for (num_track = 2; num_track <= cue_data->track_count; num_track++)
 128                 {
 129                         if (PicoCDLoadProgressCB != NULL)
 130                                 PicoCDLoadProgressCB(cd_img_name, i * num_track);
 131                         index = num_track - 1;
 132                         Cur_LBA += cue_data->tracks[num_track].pregap;
 133                         if (cue_data->tracks[num_track].type == CT_MP3) {
 134                                 ret = audio_track_mp3(cue_data->tracks[num_track].fname, index);
 135                                 if (ret != 0) break;
 136                         }
 137                         else
 138                         {
 139                                 Tracks[index].ftype = cue_data->tracks[num_track].type;
 140                                 if (cue_data->tracks[num_track].fname != NULL)
 141                                 {
 142                                         pm_file *pmfn = pm_open(cue_data->tracks[num_track].fname);
 143                                         if (pmfn != NULL)
 144                                         {
 145                                                 // addume raw, ignore header for wav..
 146                                                 Tracks[index].F = pmfn;
 147                                                 Tracks[index].Length = pmfn->size / 2352;
 148                                                 Tracks[index].Offset = cue_data->tracks[num_track].sector_offset;
 149                                         }
 150                                         else
 151                                         {
 152                                                 elprintf(EL_STATUS, "track %2i (%s): can't determine length",
 153                                                         num_track, cue_data->tracks[num_track].fname);
 154                                                 Tracks[index].Length = 2*75;
 155                                                 Tracks[index].Offset = 0;
 156                                         }
 157                                 }
 158                                 else
 159                                 {
 160                                         if (num_track < cue_data->track_count)
 161                                                 Tracks[index].Length = cue_data->tracks[num_track+1].sector_offset -
 162                                                         cue_data->tracks[num_track].sector_offset;
 163                                         else
 164                                                 Tracks[index].Length = cd_img_sectors - cue_data->tracks[num_track].sector_offset;
 165                                         Tracks[index].Offset = cue_data->tracks[num_track].sector_offset;
 166                                 }
 167                         }
 168
 169                         if (cue_data->tracks[num_track].sector_xlength != 0)
 170                                 // overriden by custom cue command
 171                                 Tracks[index].Length = cue_data->tracks[num_track].sector_xlength;
 172
 173                         LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 174                         Cur_LBA += Tracks[index].Length;
 175
 176                         elprintf(EL_STATUS, "Track %2i: %02d:%02d:%02d %9i AUDIO - %s", num_track, Tracks[index].MSF.M,
 177                                 Tracks[index].MSF.S, Tracks[index].MSF.F, Tracks[index].Length,
 178                                 cue_data->tracks[num_track].fname);
 179                 }
 180                 cue_destroy(cue_data);
 181                 goto finish;
 182         }
 183
 184         /* mp3 track autosearch, Gens-like */
 185         iso_name_len = strlen(cd_img_name);
 186         if (iso_name_len >= sizeof(tmp_name))
 187                 iso_name_len = sizeof(tmp_name) - 1;
 188
 189         for (num_track = 2, i = 0, missed = 0; i < 100 && missed < 4; i++)
 190         {
 191                 if (PicoCDLoadProgressCB != NULL && i > 1)
 192                         PicoCDLoadProgressCB(cd_img_name, i + (100-i)*missed/4);
 193
 194                 for (j = 0; j < sizeof(exts)/sizeof(char *); j++)
 195                 {
 196                         int ext_len;
 197                         char *p;
 198
 199                         index = num_track - 1;
 200
 201                         sprintf(tmp_ext, exts[j], i);
 202                         ext_len = strlen(tmp_ext);
 203                         to_upper(tmp_ext_u, tmp_ext);
 204
 205                         memcpy(tmp_name, cd_img_name, iso_name_len + 1);
 206                         p = tmp_name + iso_name_len - 4;
 207
 208                         strcpy(p, tmp_ext);
 209                         ret = audio_track_mp3(tmp_name, index);
 210                         if (ret != 0) {
 211                                 strcpy(p, tmp_ext_u);
 212                                 ret = audio_track_mp3(tmp_name, index);
 213                         }
 214
 215                         if (ret != 0 && i > 1 && iso_name_len > ext_len) {
 216                                 p = tmp_name + iso_name_len - ext_len;
 217                                 strcpy(p, tmp_ext);
 218                                 ret = audio_track_mp3(tmp_name, index);
 219                                 if (ret != 0) {
 220                                         strcpy(p, tmp_ext_u);
 221                                         ret = audio_track_mp3(tmp_name, index);
 222                                 }
 223                         }
 224
 225                         if (ret == 0)
 226                         {
 227                                 LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 228                                 Cur_LBA += Tracks[index].Length;
 229
 230                                 elprintf(EL_STATUS, "Track %2i: %02d:%02d:%02d %9i AUDIO - %s", num_track, Tracks[index].MSF.M,
 231                                         Tracks[index].MSF.S, Tracks[index].MSF.F, Tracks[index].Length, tmp_name);
 232
 233                                 num_track++;
 234                                 missed = 0;
 235                                 break;
 236                         }
 237                 }
 238                 if (ret != 0 && i > 1) missed++;
 239         }
 240
 241 finish:
 242         Pico_mcd->TOC.Last_Track = num_track - 1;
 243
 244         index = num_track - 1;
 245
 246         LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 247
 248         elprintf(EL_STATUS, "End CD -  %02d:%02d:%02d\n", Tracks[index].MSF.M,
 249                 Tracks[index].MSF.S, Tracks[index].MSF.F);
 250
 251         if (PicoCDLoadProgressCB != NULL)
 252                 PicoCDLoadProgressCB(cd_img_name, 100);
 253
 254         return 0;
 255 }
 256
 257
 258 PICO_INTERNAL void Unload_ISO(void)
 259 {
 260         int i;
 261
 262         if (Pico_mcd == NULL) return;
 263
 264         if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F);
 265
 266         for(i = 1; i < 100; i++)
 267         {
 268                 if (Pico_mcd->TOC.Tracks[i].F != NULL)
 269                 {
 270                         if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_MP3)
 271 #ifdef _PSP_FW_VERSION
 272                                 free(Pico_mcd->TOC.Tracks[i].F);
 273 #else
 274                                 fclose(Pico_mcd->TOC.Tracks[i].F);
 275 #endif
 276                         else
 277                                 pm_close(Pico_mcd->TOC.Tracks[i].F);
 278                 }
 279         }
 280         memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks));
 281 }
 282
 283
 284 PICO_INTERNAL int FILE_Read_One_LBA_CDC(void)
 285 {
 286         if (Pico_mcd->s68k_regs[0x36] & 1)                                      // DATA
 287         {
 288                 if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
 289
 290                 // moved below..
 291                 //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
 292                 //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
 293
 294                 cdprintf("Read file CDC 1 data sector :\n");
 295         }
 296         else                                                                    // AUDIO
 297         {
 298                 cdprintf("Read file CDC 1 audio sector :\n");
 299         }
 300
 301         // Update CDC stuff
 302
 303         CDC_Update_Header();
 304
 305         if (Pico_mcd->s68k_regs[0x36] & 1)              // DATA track
 306         {
 307                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 308                 {
 309                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 310                         {
 311                                 int where_read = 0;
 312
 313                                 // CAUTION : lookahead bit not implemented
 314
 315                                 if (Pico_mcd->scd.Cur_LBA < 0)
 316                                         where_read = 0;
 317                                 else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
 318                                         where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
 319                                 else where_read = Pico_mcd->scd.Cur_LBA;
 320
 321                                 Pico_mcd->scd.Cur_LBA++;
 322
 323                                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 324                                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 325
 326                                 *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N;
 327                                 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
 328
 329                                 //pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
 330                                 //pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
 331                                 PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read);
 332
 333                                 cdprintf("Read -> WA = %d  Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
 334                                 cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
 335                                         Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
 336                                 cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
 337                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
 338                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
 339                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
 340                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
 341                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
 342                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
 343                         }
 344
 345                 }
 346         }
 347         else            // music track
 348         {
 349                 Pico_mcd->scd.Cur_LBA++;
 350
 351                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 352                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 353
 354                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 355                 {
 356                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 357                         {
 358                                 // CAUTION : lookahead bit not implemented
 359
 360                                 // this is pretty rough, but oh well - not much depends on this anyway
 361                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cdda_out_buffer, 2352);
 362                         }
 363                 }
 364         }
 365
 366         if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 367         {
 368                 Pico_mcd->cdc.STAT.B.B0 = 0x80;
 369
 370                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x10)     // determine form bit form sub header ?
 371                 {
 372                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
 373                 }
 374                 else
 375                 {
 376                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
 377                 }
 378
 379                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20;     // ECC done
 380                 else Pico_mcd->cdc.STAT.B.B3 = 0x00;    // ECC not done
 381
 382                 if (Pico_mcd->cdc.IFCTRL & 0x20)
 383                 {
 384                         if (Pico_mcd->s68k_regs[0x33] & (1<<5))
 385                         {
 386                                 elprintf(EL_INTS, "cdc dec irq 5");
 387                                 SekInterruptS68k(5);
 388                         }
 389
 390                         Pico_mcd->cdc.IFSTAT &= ~0x20;          // DEC interrupt happen
 391                         Pico_mcd->cdc.Decode_Reg_Read = 0;      // Reset read after DEC int
 392                 }
 393         }
 394
 395
 396         return 0;
 397 }
 398