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