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 // TODO: check refs, move 2 context
  11 struct _file_track Tracks[100];
  12 char Track_Played;
  13
  14
  15 int FILE_Init(void)
  16 {
  17 //      MP3_Init(); // TODO
  18         Unload_ISO();
  19
  20         return 0;
  21 }
  22
  23
  24 void FILE_End(void)
  25 {
  26         Unload_ISO();
  27 }
  28
  29
  30 int Load_ISO(const char *iso_name, int is_bin)
  31 {
  32         struct stat file_stat;
  33         int i, j, num_track, Cur_LBA, index, ret, iso_name_len;
  34         _scd_track *SCD_TOC_Tracks = Pico_mcd->scd.TOC.Tracks;
  35         FILE *tmp_file;
  36         char tmp_name[1024], tmp_ext[10];
  37         static char *exts[] = {
  38                 "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
  39                 "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
  40                 "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3",
  41                 /* "%02d.wav", " %02d.wav", "-%02d.wav", "_%02d.wav", " - %02d.wav",
  42                 "%d.wav", " %d.wav", "-%d.wav", "_%d.wav", " - %2d.wav" */
  43         };
  44
  45         Unload_ISO();
  46
  47         Tracks[0].Type = is_bin ? TYPE_BIN : TYPE_ISO;
  48
  49         ret = stat(iso_name, &file_stat);
  50         if (ret != 0) return -1;
  51
  52         Tracks[0].Length = file_stat.st_size;
  53
  54         if (Tracks[0].Type == TYPE_ISO) Tracks[0].Length >>= 11;        // size in sectors
  55         else Tracks[0].Length /= 2352;                                  // size in sectors
  56
  57
  58         Tracks[0].F = fopen(iso_name, "rb");
  59         if (Tracks[0].F == NULL)
  60         {
  61                 Tracks[0].Type = 0;
  62                 Tracks[0].Length = 0;
  63                 return -1;
  64         }
  65
  66         if (Tracks[0].Type == TYPE_ISO) fseek(Tracks[0].F, 0x100, SEEK_SET);
  67         else fseek(Tracks[0].F, 0x110, SEEK_SET);
  68
  69         // fread(buf, 1, 0x200, Tracks[0].F);
  70         fseek(Tracks[0].F, 0, SEEK_SET);
  71
  72         Pico_mcd->scd.TOC.First_Track = 1;
  73
  74         SCD_TOC_Tracks[0].Num = 1;
  75         SCD_TOC_Tracks[0].Type = 1;                             // DATA
  76
  77         SCD_TOC_Tracks[0].MSF.M = 0; // minutes
  78         SCD_TOC_Tracks[0].MSF.S = 2; // seconds
  79         SCD_TOC_Tracks[0].MSF.F = 0; // frames
  80
  81         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,
  82                 SCD_TOC_Tracks[0].Type ? "DATA" : "AUDIO");
  83
  84         Cur_LBA = Tracks[0].Length;                             // Size in sectors
  85
  86         strcpy(tmp_name, iso_name);
  87         iso_name_len = strlen(iso_name);
  88
  89         for (num_track = 2, i = 0; i < 100; i++)
  90         {
  91                 for(j = 0; j < sizeof(exts)/sizeof(char *); j++)
  92                 {
  93                         int ext_len;
  94                         sprintf(tmp_ext, exts[j], i);
  95                         ext_len = strlen(tmp_ext);
  96
  97                         memcpy(tmp_name, iso_name, iso_name_len + 1);
  98                         tmp_name[iso_name_len - 4] = 0;
  99                         strcat(tmp_name, tmp_ext);
 100
 101                         tmp_file = fopen(tmp_name, "rb");
 102                         if (!tmp_file && i > 1 && iso_name_len > ext_len) {
 103                                 tmp_name[iso_name_len - ext_len] = 0;
 104                                 strcat(tmp_name, tmp_ext);
 105                                 tmp_file = fopen(tmp_name, "rb");
 106                         }
 107
 108                         if (tmp_file)
 109                         {
 110                                 // float fs;
 111                                 int fs;
 112                                 index = num_track - Pico_mcd->scd.TOC.First_Track;
 113
 114                                 ret = stat(tmp_name, &file_stat);
 115                                 fs = file_stat.st_size;                         // used to calculate lenght
 116
 117                                 Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
 118                                 Tracks[index].KBtps >>= 3;
 119                                 if (ret != 0 || Tracks[index].KBtps <= 0)
 120                                 {
 121                                         cdprintf("Error track %i: stat %i, rate %i", index, ret, Tracks[index].KBtps);
 122                                         fclose(tmp_file);
 123                                         continue;
 124                                 }
 125
 126                                 Tracks[index].F = tmp_file;
 127
 128                                 SCD_TOC_Tracks[index].Num = num_track;
 129                                 SCD_TOC_Tracks[index].Type = 0;                         // AUDIO
 130
 131                                 LBA_to_MSF(Cur_LBA, &(SCD_TOC_Tracks[index].MSF));
 132
 133                                 // MP3 File
 134                                 Tracks[index].Type = TYPE_MP3;
 135                                 fs *= 75;
 136                                 fs /= Tracks[index].KBtps * 1000;
 137                                 Tracks[index].Length = fs;
 138                                 Cur_LBA += Tracks[index].Length;
 139
 140                                 cdprintf("Track %i: %s - %02d:%02d:%02d len=%i %s", index, tmp_name, SCD_TOC_Tracks[index].MSF.M,
 141                                         SCD_TOC_Tracks[index].MSF.S, SCD_TOC_Tracks[index].MSF.F, fs,
 142                                         SCD_TOC_Tracks[index].Type ? "DATA" : "AUDIO");
 143
 144                                 num_track++;
 145                                 break;
 146                         }
 147                 }
 148         }
 149
 150         Pico_mcd->scd.TOC.Last_Track = num_track - 1;
 151
 152         index = num_track - Pico_mcd->scd.TOC.First_Track;
 153         SCD_TOC_Tracks[index].Num = num_track;
 154         SCD_TOC_Tracks[index].Type = 0;
 155
 156         LBA_to_MSF(Cur_LBA, &(SCD_TOC_Tracks[index].MSF));
 157
 158         cdprintf("End CD - %02d:%02d:%02d\n\n", SCD_TOC_Tracks[index].MSF.M,
 159                 SCD_TOC_Tracks[index].MSF.S, SCD_TOC_Tracks[index].MSF.F);
 160
 161         return 0;
 162 }
 163
 164
 165 void Unload_ISO(void)
 166 {
 167         int i;
 168
 169         Track_Played = 99;
 170
 171         for(i = 0; i < 100; i++)
 172         {
 173                 if (Tracks[i].F) fclose(Tracks[i].F);
 174                 Tracks[i].F = NULL;
 175                 Tracks[i].Length = 0;
 176                 Tracks[i].Type = 0;
 177         }
 178 }
 179
 180
 181 int FILE_Read_One_LBA_CDC(void)
 182 {
 183         int where_read;
 184         static char cp_buf[2560];
 185
 186         if (Pico_mcd->s68k_regs[0x36] & 1)                                      // DATA
 187         {
 188                 if (Tracks[0].F == NULL) return -1;
 189
 190                 if (Pico_mcd->scd.Cur_LBA < 0) where_read = 0;
 191                 else if (Pico_mcd->scd.Cur_LBA >= Tracks[0].Length) where_read = Tracks[0].Length - 1;
 192                 else where_read = Pico_mcd->scd.Cur_LBA;
 193
 194                 if (Tracks[0].Type == TYPE_ISO) where_read <<= 11;
 195                 else where_read = (where_read * 2352 + 16);
 196
 197                 fseek(Tracks[0].F, where_read, SEEK_SET);
 198                 fread(cp_buf, 1, 2048, Tracks[0].F);
 199
 200                 cdprintf("Read file CDC 1 data sector :\n");
 201         }
 202         else                                                                    // AUDIO
 203         {
 204                 // int rate, channel;
 205
 206                 if (Tracks[Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track].Type == TYPE_MP3)
 207                 {
 208                         // TODO
 209                         // MP3_Update(cp_buf, &rate, &channel, 0);
 210                         // Write_CD_Audio((short *) cp_buf, rate, channel, 588);
 211                 }
 212
 213                 cdprintf("Read file CDC 1 audio sector :\n");
 214         }
 215
 216         // Update CDC stuff
 217
 218         CDC_Update_Header();
 219
 220         if (Pico_mcd->s68k_regs[0x36] & 1)              // DATA track
 221         {
 222                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 223                 {
 224                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 225                         {
 226                                 // CAUTION : lookahead bit not implemented
 227
 228                                 Pico_mcd->scd.Cur_LBA++;
 229
 230                                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 231                                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 232
 233                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
 234                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], &Pico_mcd->cdc.HEAD, 4);
 235
 236 #ifdef DEBUG_CD
 237                                 cdprintf("Read -> WA = %d  Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
 238                                 cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
 239                                         Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
 240                                 cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
 241                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
 242                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
 243                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
 244                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
 245                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
 246                                         Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
 247 #endif
 248                         }
 249
 250                 }
 251         }
 252         else            // music track
 253         {
 254                 Pico_mcd->scd.Cur_LBA++;
 255
 256                 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF;              // add one sector to WA
 257                 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
 258
 259                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 260                 {
 261                         if (Pico_mcd->cdc.CTRL.B.B0 & 0x04)     // WRRQ : this bit enable write to buffer
 262                         {
 263                                 // CAUTION : lookahead bit not implemented
 264
 265                                 memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352);
 266                         }
 267                 }
 268         }
 269
 270         if (Pico_mcd->cdc.CTRL.B.B0 & 0x80)             // DECEN = decoding enable
 271         {
 272                 Pico_mcd->cdc.STAT.B.B0 = 0x80;
 273
 274                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x10)     // determine form bit form sub header ?
 275                 {
 276                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
 277                 }
 278                 else
 279                 {
 280                         Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
 281                 }
 282
 283                 if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20;     // ECC done
 284                 else Pico_mcd->cdc.STAT.B.B3 = 0x00;    // ECC not done
 285
 286                 if (Pico_mcd->cdc.IFCTRL & 0x20)
 287                 {
 288                         if (Pico_mcd->s68k_regs[0x33] & (1<<5))
 289                         {
 290                                 dprintf("cdc dec irq 5");
 291                                 SekInterruptS68k(5);
 292                         }
 293
 294                         Pico_mcd->cdc.IFSTAT &= ~0x20;  // DEC interrupt happen
 295                         CDC_Decode_Reg_Read = 0;        // Reset read after DEC int
 296                 }
 297         }
 298
 299
 300         return 0;
 301 }
 302
 303
 304 int FILE_Play_CD_LBA(void)
 305 {
 306         int index = Pico_mcd->scd.Cur_Track - Pico_mcd->scd.TOC.First_Track;
 307
 308         cdprintf("Play FILE Comp");
 309
 310         if (Tracks[index].F == NULL)
 311         {
 312                 return 1;
 313         }
 314
 315         if (Tracks[index].Type == TYPE_MP3)
 316         {
 317                 int pos1000 = 0;
 318                 int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track);
 319                 if (Track_LBA_Pos < 0) Track_LBA_Pos = 0;
 320                 if (Track_LBA_Pos)
 321                         pos1000 = Track_LBA_Pos * 1024 / Tracks[index].Length;
 322
 323                 mp3_start_play(Tracks[index].F, pos1000);
 324         }
 325         else
 326         {
 327                 return 3;
 328         }
 329
 330         return 0;
 331 }
 332