Pico/cd/cd_file.c

   1 #include <sys/stat.h>
   2 #include "cd_file.h"
   3
   4 #include "../PicoInt.h"
   5
   6 #define cdprintf dprintf
   7 //#define cdprintf(x...)
   8 #define DEBUG_CD
   9
  10
  11 void FILE_End(void)
  12 {
  13         Unload_ISO();
  14 }
  15
  16
  17 int Load_ISO(const char *iso_name, int is_bin)
  18 {
  19         struct stat file_stat;
  20         int i, j, num_track, Cur_LBA, index, ret, iso_name_len;
  21         _scd_track *Tracks = Pico_mcd->TOC.Tracks;
  22         FILE *tmp_file;
  23         char tmp_name[1024], tmp_ext[10];
  24         static char *exts[] = {
  25                 "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
  26                 "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
  27                 "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3",
  28                 /* "%02d.wav", " %02d.wav", "-%02d.wav", "_%02d.wav", " - %02d.wav",
  29                 "%d.wav", " %d.wav", "-%d.wav", "_%d.wav", " - %2d.wav" */
  30         };
  31
  32         Unload_ISO();
  33
  34         Tracks[0].ftype = is_bin ? TYPE_BIN : TYPE_ISO;
  35
  36         ret = stat(iso_name, &file_stat);
  37         if (ret != 0) return -1;
  38
  39         Tracks[0].Length = file_stat.st_size;
  40
  41         if (Tracks[0].ftype == TYPE_ISO) Tracks[0].Length >>= 11;       // size in sectors
  42         else Tracks[0].Length /= 2352;                                  // size in sectors
  43
  44
  45         Tracks[0].F = fopen(iso_name, "rb");
  46         if (Tracks[0].F == NULL)
  47         {
  48                 Tracks[0].ftype = 0;
  49                 Tracks[0].Length = 0;
  50                 return -1;
  51         }
  52
  53         if (Tracks[0].ftype == TYPE_ISO) fseek(Tracks[0].F, 0x100, SEEK_SET);
  54         else fseek(Tracks[0].F, 0x110, SEEK_SET);
  55
  56         // fread(buf, 1, 0x200, Tracks[0].F);
  57         fseek(Tracks[0].F, 0, SEEK_SET);
  58
  59         Tracks[0].MSF.M = 0; // minutes
  60         Tracks[0].MSF.S = 2; // seconds
  61         Tracks[0].MSF.F = 0; // frames
  62
  63         cdprintf("Track 0 - %02d:%02d:%02d DATA", Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F);
  64
  65         Cur_LBA = Tracks[0].Length;                             // Size in sectors
  66
  67         strcpy(tmp_name, iso_name);
  68         iso_name_len = strlen(iso_name);
  69
  70         for (num_track = 2, i = 0; i < 100; i++)
  71         {
  72                 for(j = 0; j < sizeof(exts)/sizeof(char *); j++)
  73                 {
  74                         int ext_len;
  75                         sprintf(tmp_ext, exts[j], i);
  76                         ext_len = strlen(tmp_ext);
  77
  78                         memcpy(tmp_name, iso_name, iso_name_len + 1);
  79                         tmp_name[iso_name_len - 4] = 0;
  80                         strcat(tmp_name, tmp_ext);
  81
  82                         tmp_file = fopen(tmp_name, "rb");
  83                         if (!tmp_file && i > 1 && iso_name_len > ext_len) {
  84                                 tmp_name[iso_name_len - ext_len] = 0;
  85                                 strcat(tmp_name, tmp_ext);
  86                                 tmp_file = fopen(tmp_name, "rb");
  87                         }
  88
  89                         if (tmp_file)
  90                         {
  91                                 // float fs;
  92                                 int fs;
  93                                 index = num_track - 1;
  94
  95                                 ret = stat(tmp_name, &file_stat);
  96                                 fs = file_stat.st_size;                         // used to calculate lenght
  97
  98                                 Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
  99                                 Tracks[index].KBtps >>= 3;
 100                                 if (ret != 0 || Tracks[index].KBtps <= 0)
 101                                 {
 102                                         cdprintf("Error track %i: stat %i, rate %i", index, ret, Tracks[index].KBtps);
 103                                         fclose(tmp_file);
 104                                         continue;
 105                                 }
 106
 107                                 Tracks[index].F = tmp_file;
 108
 109                                 LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 110
 111                                 // MP3 File
 112                                 Tracks[index].ftype = TYPE_MP3;
 113                                 fs *= 75;
 114                                 fs /= Tracks[index].KBtps * 1000;
 115                                 Tracks[index].Length = fs;
 116                                 Cur_LBA += Tracks[index].Length;
 117
 118                                 cdprintf("Track %i: %s - %02d:%02d:%02d len=%i AUDIO", index, tmp_name, Tracks[index].MSF.M,
 119                                         Tracks[index].MSF.S, Tracks[index].MSF.F, fs);
 120
 121                                 num_track++;
 122                                 break;
 123                         }
 124                 }
 125         }
 126
 127         Pico_mcd->TOC.Last_Track = num_track - 1;
 128
 129         index = num_track - 1;
 130
 131         LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
 132
 133         cdprintf("End CD - %02d:%02d:%02d\n\n", Tracks[index].MSF.M,
 134                 Tracks[index].MSF.S, Tracks[index].MSF.F);
 135
 136         return 0;
 137 }
 138
 139
 140 void Unload_ISO(void)
 141 {
 142         int i;
 143
 144         if (Pico_mcd == NULL) return;
 145
 146         for(i = 0; i < 100; i++)
 147         {
 148                 if (Pico_mcd->TOC.Tracks[i].F) fclose(Pico_mcd->TOC.Tracks[i].F);
 149                 Pico_mcd->TOC.Tracks[i].F = NULL;
 150                 Pico_mcd->TOC.Tracks[i].Length = 0;
 151                 Pico_mcd->TOC.Tracks[i].ftype = 0;
 152         }
 153 }
 154
 155
 156 int FILE_Read_One_LBA_CDC(void)
 157 {
 158         int where_read = 0;
 159 //      static char cp_buf[2560];
 160
 161         if (Pico_mcd->s68k_regs[0x36] & 1)                                      // DATA
 162         {
 163                 if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
 164
 165                 if (Pico_mcd->scd.Cur_LBA < 0)
 166                         where_read = 0;
 167                 else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
 168                         where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
 169                 else where_read = Pico_mcd->scd.Cur_LBA;
 170
 171                 if (Pico_mcd->TOC.Tracks[0].ftype == TYPE_ISO) where_read <<= 11;
 172                 else where_read = (where_read * 2352 + 16);
 173
 174                 // moved below..
 175                 //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
 176                 //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
 177
 178                 cdprintf("Read file CDC 1 data sector :\n");
 179         }
 180         else                                                                    // AUDIO
 181         {
 182                 // int rate, channel;
 183
 184                 if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3)
 185                 {
 186                         // TODO
 187                         // MP3_Update(cp_buf, &rate, &channel, 0);
 188                         // Write_CD_Audio((short *) cp_buf, rate, channel, 588);
 189                 }
 190
 191                 cdprintf("Read file CDC 1 audio sector :\n");
 192         }
 193
 194         // Update CDC stuff
 195
 196         CDC_Update_Header();
 197
 198         if (Pico_mcd->s68k_regs[0x36] & 1)              // DATA track
 199         {
 200                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 201                 {
 202                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 203                         {
 204                                 // CAUTION : lookahead bit not implemented
 205
 206                                 Pico_mcd->scd.Cur_LBA++;
 207
 208                                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 209                                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 210
 211                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], &Pico_mcd->cdc.HEAD, 4);
 212                                 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
 213
 214                                 fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
 215                                 fread(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
 216
 217 #ifdef DEBUG_CD
 218                                 cdprintf("Read -> WA = %d  Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
 219                                 cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
 220                                         Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
 221                                 cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
 222                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
 223                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
 224                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
 225                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
 226                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
 227                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
 228 #endif
 229                         }
 230
 231                 }
 232         }
 233         else            // music track
 234         {
 235                 Pico_mcd->scd.Cur_LBA++;
 236
 237                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 238                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 239
 240                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 241                 {
 242                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 243                         {
 244                                 // CAUTION : lookahead bit not implemented
 245
 246                                 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352);
 247                         }
 248                 }
 249         }
 250
 251         if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 252         {
 253                 Pico_mcd->cdc.STAT.B.B0 = 0x80;
 254
 255                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x10)     // determine form bit form sub header ?
 256                 {
 257                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
 258                 }
 259                 else
 260                 {
 261                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
 262                 }
 263
 264                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20;     // ECC done
 265                 else Pico_mcd->cdc.STAT.B.B3 = 0x00;    // ECC not done
 266
 267                 if (Pico_mcd->cdc.IFCTRL & 0x20)
 268                 {
 269                         if (Pico_mcd->s68k_regs[0x33] & (1<<5))
 270                         {
 271                                 dprintf("cdc dec irq 5");
 272                                 SekInterruptS68k(5);
 273                         }
 274
 275                         Pico_mcd->cdc.IFSTAT &= ~0x20;          // DEC interrupt happen
 276                         Pico_mcd->cdc.Decode_Reg_Read = 0;      // Reset read after DEC int
 277                 }
 278         }
 279
 280
 281         return 0;
 282 }
 283
 284
 285 int FILE_Play_CD_LBA(void)
 286 {
 287         int index = Pico_mcd->scd.Cur_Track - 1;
 288         Pico_mcd->m.audio_track = index;
 289
 290         cdprintf("Play track #%i", Pico_mcd->scd.Cur_Track);
 291
 292         if (Pico_mcd->TOC.Tracks[index].F == NULL)
 293         {
 294                 return 1;
 295         }
 296
 297         if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3)
 298         {
 299                 int pos1024 = 0;
 300                 int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track);
 301                 if (Track_LBA_Pos < 0) Track_LBA_Pos = 0;
 302                 if (Track_LBA_Pos)
 303                         pos1024 = Track_LBA_Pos * 1024 / Pico_mcd->TOC.Tracks[index].Length;
 304
 305                 mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024);
 306         }
 307         else
 308         {
 309                 return 3;
 310         }
 311
 312         return 0;
 313 }
 314