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, iso_name_len;
  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].Length = file_stat.st_size;
  68
  69         if (Tracks[0].Type == TYPE_ISO) Tracks[0].Length >>= 11;        // size in sectors
  70         else Tracks[0].Length /= 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].Length = 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; // minutes
  93         SCD_TOC_Tracks[0].MSF.S = 2; // seconds
  94         SCD_TOC_Tracks[0].MSF.F = 0; // frames
  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].Length;                             // Size in sectors
 100
 101         strcpy(tmp_name, iso_name);
 102         iso_name_len = strlen(iso_name);
 103
 104         for (num_track = 2, i = 0; i < 100; i++)
 105         {
 106                 if (sizeof(exts)/sizeof(char *) != 10) { printf("eee"); exit(1); }
 107
 108                 for(j = 0; j < sizeof(exts)/sizeof(char *); j++)
 109                 {
 110                         int ext_len;
 111                         sprintf(tmp_ext, exts[j], i);
 112                         ext_len = strlen(tmp_ext);
 113
 114                         memcpy(tmp_name, iso_name, iso_name_len + 1);
 115                         tmp_name[iso_name_len - 4] = 0;
 116                         strcat(tmp_name, tmp_ext);
 117
 118                         tmp_file = fopen(tmp_name, "rb");
 119                         if (!tmp_file && i > 1 && iso_name_len > ext_len) {
 120                                 tmp_name[iso_name_len - ext_len] = 0;
 121                                 strcat(tmp_name, tmp_ext);
 122                                 tmp_file = fopen(tmp_name, "rb");
 123                         }
 124
 125                         if (tmp_file)
 126                         {
 127                                 // float fs;
 128                                 int fs;
 129                                 index = num_track - Pico_mcd->scd.TOC.First_Track;
 130
 131                                 ret = stat(tmp_name, &file_stat);
 132                                 fs = file_stat.st_size;                         // used to calculate lenght
 133
 134                                 Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
 135                                 Tracks[index].KBtps >>= 3;
 136                                 if (ret != 0 || Tracks[index].KBtps <= 0)
 137                                 {
 138                                         cdprintf("Error track %i: stat %i, rate %i", index, ret, Tracks[index].KBtps);
 139                                         fclose(tmp_file);
 140                                         continue;
 141                                 }
 142
 143                                 Tracks[index].F = tmp_file;
 144
 145                                 SCD_TOC_Tracks[index].Num = num_track;
 146                                 SCD_TOC_Tracks[index].Type = 0;                         // AUDIO
 147
 148                                 LBA_to_MSF(Cur_LBA, &(SCD_TOC_Tracks[index].MSF));
 149
 150                                 // MP3 File
 151                                 Tracks[index].Type = TYPE_MP3;
 152                                 fs *= 75;
 153                                 fs /= Tracks[index].KBtps * 1000;
 154                                 Tracks[index].Length = fs;
 155                                 Cur_LBA += Tracks[index].Length;
 156
 157                                 cdprintf("Track %i: %s - %02d:%02d:%02d len=%i %s", index, tmp_name, SCD_TOC_Tracks[index].MSF.M,
 158                                         SCD_TOC_Tracks[index].MSF.S, SCD_TOC_Tracks[index].MSF.F, fs,
 159                                         SCD_TOC_Tracks[index].Type ? "DATA" : "AUDIO");
 160
 161                                 num_track++;
 162                                 break;
 163                         }
 164                 }
 165         }
 166
 167         Pico_mcd->scd.TOC.Last_Track = num_track - 1;
 168
 169         index = num_track - Pico_mcd->scd.TOC.First_Track;
 170         SCD_TOC_Tracks[index].Num = num_track;
 171         SCD_TOC_Tracks[index].Type = 0;
 172
 173         LBA_to_MSF(Cur_LBA, &(SCD_TOC_Tracks[index].MSF));
 174
 175         cdprintf("End CD - %02d:%02d:%02d\n\n", SCD_TOC_Tracks[index].MSF.M,
 176                 SCD_TOC_Tracks[index].MSF.S, SCD_TOC_Tracks[index].MSF.F);
 177
 178         return 0;
 179 }
 180
 181
 182 void Unload_ISO(void)
 183 {
 184         int i;
 185
 186         Track_Played = 99;
 187
 188         for(i = 0; i < 100; i++)
 189         {
 190                 if (Tracks[i].F) fclose(Tracks[i].F);
 191                 Tracks[i].F = NULL;
 192                 Tracks[i].Length = 0;
 193                 Tracks[i].Type = 0;
 194         }
 195 }
 196
 197
 198 int FILE_Read_One_LBA_CDC(void)
 199 {
 200         int where_read;
 201         static char cp_buf[2560];
 202
 203         if (Pico_mcd->s68k_regs[0x36] & 1)                                      // DATA
 204         {
 205                 if (Tracks[0].F == NULL) return -1;
 206
 207                 if (Pico_mcd->scd.Cur_LBA < 0) where_read = 0;
 208                 else if (Pico_mcd->scd.Cur_LBA >= Tracks[0].Length) where_read = Tracks[0].Length - 1;
 209                 else where_read = Pico_mcd->scd.Cur_LBA;
 210
 211                 if (Tracks[0].Type == TYPE_ISO) where_read <<= 11;
 212                 else where_read = (where_read * 2352 + 16);
 213
 214                 fseek(Tracks[0].F, where_read, SEEK_SET);
 215                 fread(cp_buf, 1, 2048, Tracks[0].F);
 216
 217                 cdprintf("Read file CDC 1 data sector :\n");
 218         }
 219         else                                                                    // AUDIO
 220         {
 221                 // int rate, channel;
 222
 223                 if (Tracks[Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track].Type == TYPE_MP3)
 224                 {
 225                         // TODO
 226                         // MP3_Update(cp_buf, &rate, &channel, 0);
 227                         // Write_CD_Audio((short *) cp_buf, rate, channel, 588);
 228                 }
 229
 230                 cdprintf("Read file CDC 1 audio sector :\n");
 231         }
 232
 233         // Update CDC stuff
 234
 235         CDC_Update_Header();
 236
 237         if (Pico_mcd->s68k_regs[0x36] & 1)              // DATA track
 238         {
 239                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 240                 {
 241                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 242                         {
 243                                 // CAUTION : lookahead bit not implemented
 244
 245                                 Pico_mcd->scd.Cur_LBA++;
 246
 247                                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 248                                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 249
 250                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
 251                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], &Pico_mcd->cdc.HEAD, 4);
 252
 253 #ifdef DEBUG_CD
 254                                 cdprintf("Read -> WA = %d  Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
 255                                 cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
 256                                         Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
 257                                 cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
 258                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
 259                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
 260                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
 261                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
 262                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
 263                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
 264 #endif
 265                         }
 266
 267                 }
 268         }
 269         else            // music track
 270         {
 271                 Pico_mcd->scd.Cur_LBA++;
 272
 273                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 274                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 275
 276                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 277                 {
 278                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 279                         {
 280                                 // CAUTION : lookahead bit not implemented
 281
 282                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352);
 283                         }
 284                 }
 285         }
 286
 287         if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 288         {
 289                 Pico_mcd->cdc.STAT.B.B0 = 0x80;
 290
 291                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x10)     // determine form bit form sub header ?
 292                 {
 293                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
 294                 }
 295                 else
 296                 {
 297                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
 298                 }
 299
 300                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20;     // ECC done
 301                 else Pico_mcd->cdc.STAT.B.B3 = 0x00;    // ECC not done
 302
 303                 if (Pico_mcd->cdc.IFCTRL & 0x20)
 304                 {
 305                         if (Pico_mcd->s68k_regs[0x33] & (1<<5))
 306                         {
 307                                 dprintf("cdc dec irq 5");
 308                                 SekInterruptS68k(5);
 309                         }
 310
 311                         Pico_mcd->cdc.IFSTAT &= ~0x20;  // DEC interrupt happen
 312                         CDC_Decode_Reg_Read = 0;        // Reset read after DEC int
 313                 }
 314         }
 315
 316
 317         return 0;
 318 }
 319
 320
 321 int FILE_Play_CD_LBA(void)
 322 {
 323         int index = Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track;
 324
 325         cdprintf("Play FILE Comp");
 326
 327         if (Tracks[index].F == NULL)
 328         {
 329                 return 1;
 330         }
 331
 332         if (Tracks[index].Type == TYPE_MP3)
 333         {
 334                 int pos1000 = 0;
 335                 int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track);
 336                 if (Track_LBA_Pos < 0) Track_LBA_Pos = 0;
 337                 if (Track_LBA_Pos)
 338                         pos1000 = Track_LBA_Pos * 1024 / Tracks[index].Length;
 339
 340                 mp3_start_play(Tracks[index].F, pos1000);
 341         }
 342         else
 343         {
 344                 return 3;
 345         }
 346
 347         return 0;
 348 }
 349