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