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