Pico/cd/cd_file.c

   1 /*
   2 #include <stdio.h>
   3 #include <string.h>
   4 #if defined(__WIN__)
   5 #include <windows.h>
   6 #else
   7 #include "port.h"
   8 #endif
   9 #include "cd_sys.h"
  10 #include "cd_file.h"
  11 #include "lc89510.h"
  12 #include "cdda_mp3.h"
  13 #include "star_68k.h"
  14 #include "rom.h"
  15 #include "mem_s68k.h"
  16 */
  17
  18 #include <sys/stat.h>
  19 #include "cd_file.h"
  20
  21 #include "../PicoInt.h"
  22
  23 #define cdprintf dprintf
  24 //#define cdprintf(x...)
  25 #define DEBUG_CD
  26
  27 struct _file_track Tracks[100];
  28 char Track_Played;
  29
  30
  31 int FILE_Init(void)
  32 {
  33 //      MP3_Init(); // TODO
  34         Unload_ISO();
  35
  36         return 0;
  37 }
  38
  39
  40 void FILE_End(void)
  41 {
  42         Unload_ISO();
  43 }
  44
  45
  46 int Load_ISO(const char *iso_name, int is_bin)
  47 {
  48         struct stat file_stat;
  49         int i, j, num_track, Cur_LBA, index, ret;
  50         _scd_track *SCD_TOC_Tracks = Pico_mcd->scd.TOC.Tracks;
  51         FILE *tmp_file;
  52         char tmp_name[1024], tmp_ext[10];
  53         static char *exts[] = {
  54                 "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
  55                 "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
  56                 /* "%02d.wav", " %02d.wav", "-%02d.wav", "_%02d.wav", " - %02d.wav",
  57                 "%d.wav", " %d.wav", "-%d.wav", "_%d.wav", " - %2d.wav" */
  58         };
  59
  60         Unload_ISO();
  61
  62         Tracks[0].Type = is_bin ? TYPE_BIN : TYPE_ISO;
  63
  64         ret = stat(iso_name, &file_stat);
  65         if (ret != 0) return -1;
  66
  67         Tracks[0].Lenght = file_stat.st_size;
  68
  69         if (Tracks[0].Type == TYPE_ISO) Tracks[0].Lenght >>= 11;        // size in sectors
  70         else Tracks[0].Lenght /= 2352;                                  // size in sectors
  71
  72
  73         Tracks[0].F = fopen(iso_name, "rb");
  74         if (Tracks[0].F == NULL)
  75         {
  76                 Tracks[0].Type = 0;
  77                 Tracks[0].Lenght = 0;
  78                 return -1;
  79         }
  80
  81         if (Tracks[0].Type == TYPE_ISO) fseek(Tracks[0].F, 0x100, SEEK_SET);
  82         else fseek(Tracks[0].F, 0x110, SEEK_SET);
  83
  84         // fread(buf, 1, 0x200, Tracks[0].F);
  85         fseek(Tracks[0].F, 0, SEEK_SET);
  86
  87         Pico_mcd->scd.TOC.First_Track = 1;
  88
  89         SCD_TOC_Tracks[0].Num = 1;
  90         SCD_TOC_Tracks[0].Type = 1;                             // DATA
  91
  92         SCD_TOC_Tracks[0].MSF.M = 0;
  93         SCD_TOC_Tracks[0].MSF.S = 2;
  94         SCD_TOC_Tracks[0].MSF.F = 0;
  95
  96         cdprintf("Track 0 - %02d:%02d:%02d %s", SCD_TOC_Tracks[0].MSF.M, SCD_TOC_Tracks[0].MSF.S, SCD_TOC_Tracks[0].MSF.F,
  97                 SCD_TOC_Tracks[0].Type ? "DATA" : "AUDIO");
  98
  99         Cur_LBA = Tracks[0].Lenght;                             // Size in sectors
 100
 101         strcpy(tmp_name, iso_name);
 102
 103         for(num_track = 2, i = 0; i < 100; i++)
 104         {
 105                 if (sizeof(exts)/sizeof(char *) != 10) { printf("eee"); exit(1); }
 106
 107                 for(j = 0; j < sizeof(exts)/sizeof(char *); j++)
 108                 {
 109                         tmp_name[strlen(iso_name) - 4] = 0;
 110                         sprintf(tmp_ext, exts[j], i);
 111                         strcat(tmp_name, tmp_ext);
 112
 113                         tmp_file = fopen(tmp_name, "rb");
 114
 115                         if (tmp_file)
 116                         {
 117                                 float fs;
 118                                 index = num_track - Pico_mcd->scd.TOC.First_Track;
 119
 120                                 stat(tmp_name, &file_stat);
 121
 122                                 fs = (float) file_stat.st_size;                         // used to calculate lenght
 123
 124                                 Tracks[index].F = tmp_file;
 125
 126                                 SCD_TOC_Tracks[index].Num = num_track;
 127                                 SCD_TOC_Tracks[index].Type = 0;                         // AUDIO
 128
 129                                 LBA_to_MSF(Cur_LBA, &(SCD_TOC_Tracks[index].MSF));
 130
 131                                 cdprintf("Track %i - %02d:%02d:%02d %s", index, SCD_TOC_Tracks[index].MSF.M,
 132                                         SCD_TOC_Tracks[index].MSF.S, SCD_TOC_Tracks[index].MSF.F,
 133                                         SCD_TOC_Tracks[index].Type ? "DATA" : "AUDIO");
 134
 135                                 // MP3 File
 136                                 Tracks[index].Type = TYPE_MP3;
 137                                 fs /= (128>>3); // (float) (MP3_Get_Bitrate(Tracks[num_track - 1].F) >> 3);
 138                                 fs *= 75;
 139                                 Tracks[index].Lenght = (int) fs;
 140                                 Cur_LBA += Tracks[index].Lenght;
 141
 142                                 num_track++;
 143                                 break;
 144                         }
 145                 }
 146         }
 147
 148         Pico_mcd->scd.TOC.Last_Track = num_track - 1;
 149
 150         index = num_track - Pico_mcd->scd.TOC.First_Track;
 151         SCD_TOC_Tracks[index].Num = num_track;
 152         SCD_TOC_Tracks[index].Type = 0;
 153
 154         LBA_to_MSF(Cur_LBA, &(SCD_TOC_Tracks[index].MSF));
 155
 156         cdprintf("End CD - %02d:%02d:%02d\n\n", SCD_TOC_Tracks[index].MSF.M,
 157                 SCD_TOC_Tracks[index].MSF.S, SCD_TOC_Tracks[index].MSF.F);
 158
 159         return 0;
 160 }
 161
 162
 163 void Unload_ISO(void)
 164 {
 165         int i;
 166
 167         Track_Played = 99;
 168
 169         for(i = 0; i < 100; i++)
 170         {
 171                 if (Tracks[i].F) fclose(Tracks[i].F);
 172                 Tracks[i].F = NULL;
 173                 Tracks[i].Lenght = 0;
 174                 Tracks[i].Type = 0;
 175         }
 176 }
 177
 178
 179 int FILE_Read_One_LBA_CDC(void)
 180 {
 181         int where_read;
 182         static char cp_buf[2560];
 183
 184         if (Pico_mcd->s68k_regs[0x36] & 1)                                      // DATA
 185         {
 186                 if (Tracks[0].F == NULL) return -1;
 187
 188                 if (Pico_mcd->scd.Cur_LBA < 0) where_read = 0;
 189                 else if (Pico_mcd->scd.Cur_LBA >= Tracks[0].Lenght) where_read = Tracks[0].Lenght - 1;
 190                 else where_read = Pico_mcd->scd.Cur_LBA;
 191
 192                 if (Tracks[0].Type == TYPE_ISO) where_read <<= 11;
 193                 else where_read = (where_read * 2352 + 16);
 194
 195                 fseek(Tracks[0].F, where_read, SEEK_SET);
 196                 fread(cp_buf, 1, 2048, Tracks[0].F);
 197
 198                 cdprintf("Read file CDC 1 data sector :\n");
 199         }
 200         else                                                                    // AUDIO
 201         {
 202                 // int rate, channel;
 203
 204                 if (Tracks[Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track].Type == TYPE_MP3)
 205                 {
 206                         // TODO
 207                         // MP3_Update(cp_buf, &rate, &channel, 0);
 208                         // Write_CD_Audio((short *) cp_buf, rate, channel, 588);
 209                 }
 210
 211                 cdprintf("Read file CDC 1 audio sector :\n");
 212         }
 213
 214         // Update CDC stuff
 215
 216         CDC_Update_Header();
 217
 218         if (Pico_mcd->s68k_regs[0x36] & 1)              // DATA track
 219         {
 220                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 221                 {
 222                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 223                         {
 224                                 // CAUTION : lookahead bit not implemented
 225
 226                                 Pico_mcd->scd.Cur_LBA++;
 227
 228                                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 229                                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 230
 231                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
 232                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], &Pico_mcd->cdc.HEAD, 4);
 233
 234 #ifdef DEBUG_CD
 235                                 cdprintf("Read -> WA = %d  Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
 236                                 cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
 237                                         Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
 238                                 cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
 239                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
 240                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
 241                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
 242                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
 243                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
 244                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
 245 #endif
 246                         }
 247
 248                 }
 249         }
 250         else            // music track
 251         {
 252                 Pico_mcd->scd.Cur_LBA++;
 253
 254                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 255                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 256
 257                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 258                 {
 259                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 260                         {
 261                                 // CAUTION : lookahead bit not implemented
 262
 263                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352);
 264                         }
 265                 }
 266         }
 267
 268         if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 269         {
 270                 Pico_mcd->cdc.STAT.B.B0 = 0x80;
 271
 272                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x10)     // determine form bit form sub header ?
 273                 {
 274                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
 275                 }
 276                 else
 277                 {
 278                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
 279                 }
 280
 281                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20;     // ECC done
 282                 else Pico_mcd->cdc.STAT.B.B3 = 0x00;    // ECC not done
 283
 284                 if (Pico_mcd->cdc.IFCTRL & 0x20)
 285                 {
 286                         if (Pico_mcd->s68k_regs[0x33] & (1<<5))
 287                         {
 288                                 dprintf("cdc dec irq 5");
 289                                 SekInterruptS68k(5);
 290                         }
 291
 292                         Pico_mcd->cdc.IFSTAT &= ~0x20;  // DEC interrupt happen
 293                         CDC_Decode_Reg_Read = 0;        // Reset read after DEC int
 294                 }
 295         }
 296
 297
 298         return 0;
 299 }
 300
 301
 302 int FILE_Play_CD_LBA(void)
 303 {
 304         int index = Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track;
 305
 306         cdprintf("Play FILE Comp");
 307
 308         if (Tracks[index].F == NULL)
 309         {
 310                 return 1;
 311         }
 312
 313         if (Tracks[index].Type == TYPE_MP3)
 314         {
 315                 int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track);
 316                 if (Track_LBA_Pos < 0) Track_LBA_Pos = 0;
 317
 318                 // MP3_Play(index, Track_LBA_Pos); // TODO
 319         }
 320         else
 321         {
 322                 return 3;
 323         }
 324
 325         return 0;
 326 }
 327