cd_file.c 7.5 KB

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  1. #include <sys/stat.h>
  2. #include "cd_file.h"
  3. #include "../PicoInt.h"
  4. #define cdprintf dprintf
  5. //#define cdprintf(x...)
  6. #define DEBUG_CD
  7. void FILE_End(void)
  8. {
  9. Unload_ISO();
  10. }
  11. int Load_ISO(const char *iso_name, int is_bin)
  12. {
  13. int i, j, num_track, Cur_LBA, index, ret, iso_name_len;
  14. _scd_track *Tracks = Pico_mcd->TOC.Tracks;
  15. char tmp_name[1024], tmp_ext[10];
  16. pm_file *pmf;
  17. static char *exts[] = {
  18. "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
  19. "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
  20. "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3",
  21. /* "%02d.wav", " %02d.wav", "-%02d.wav", "_%02d.wav", " - %02d.wav",
  22. "%d.wav", " %d.wav", "-%d.wav", "_%d.wav", " - %2d.wav" */
  23. };
  24. Unload_ISO();
  25. Tracks[0].ftype = is_bin ? TYPE_BIN : TYPE_ISO;
  26. Tracks[0].F = pmf = pm_open(iso_name);
  27. if (Tracks[0].F == NULL)
  28. {
  29. Tracks[0].ftype = 0;
  30. Tracks[0].Length = 0;
  31. return -1;
  32. }
  33. if (Tracks[0].ftype == TYPE_ISO)
  34. Tracks[0].Length = pmf->size >>= 11; // size in sectors
  35. else Tracks[0].Length = pmf->size /= 2352;
  36. Tracks[0].MSF.M = 0; // minutes
  37. Tracks[0].MSF.S = 2; // seconds
  38. Tracks[0].MSF.F = 0; // frames
  39. cdprintf("Track 0 - %02d:%02d:%02d DATA", Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F);
  40. Cur_LBA = Tracks[0].Length; // Size in sectors
  41. iso_name_len = strlen(iso_name);
  42. for (num_track = 2, i = 0; i < 100; i++)
  43. {
  44. for(j = 0; j < sizeof(exts)/sizeof(char *); j++)
  45. {
  46. int ext_len;
  47. FILE *tmp_file;
  48. sprintf(tmp_ext, exts[j], i);
  49. ext_len = strlen(tmp_ext);
  50. memcpy(tmp_name, iso_name, iso_name_len + 1);
  51. tmp_name[iso_name_len - 4] = 0;
  52. strcat(tmp_name, tmp_ext);
  53. tmp_file = fopen(tmp_name, "rb");
  54. if (!tmp_file && i > 1 && iso_name_len > ext_len) {
  55. tmp_name[iso_name_len - ext_len] = 0;
  56. strcat(tmp_name, tmp_ext);
  57. tmp_file = fopen(tmp_name, "rb");
  58. }
  59. if (tmp_file)
  60. {
  61. int fs;
  62. struct stat file_stat;
  63. index = num_track - 1;
  64. ret = stat(tmp_name, &file_stat);
  65. fs = file_stat.st_size; // used to calculate lenght
  66. Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
  67. Tracks[index].KBtps >>= 3;
  68. if (ret != 0 || Tracks[index].KBtps <= 0)
  69. {
  70. cdprintf("Error track %i: stat %i, rate %i", index, ret, Tracks[index].KBtps);
  71. fclose(tmp_file);
  72. continue;
  73. }
  74. Tracks[index].F = tmp_file;
  75. LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
  76. // MP3 File
  77. Tracks[index].ftype = TYPE_MP3;
  78. fs *= 75;
  79. fs /= Tracks[index].KBtps * 1000;
  80. Tracks[index].Length = fs;
  81. Cur_LBA += Tracks[index].Length;
  82. cdprintf("Track %i: %s - %02d:%02d:%02d len=%i AUDIO", index, tmp_name, Tracks[index].MSF.M,
  83. Tracks[index].MSF.S, Tracks[index].MSF.F, fs);
  84. num_track++;
  85. break;
  86. }
  87. }
  88. }
  89. Pico_mcd->TOC.Last_Track = num_track - 1;
  90. index = num_track - 1;
  91. LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
  92. cdprintf("End CD - %02d:%02d:%02d\n\n", Tracks[index].MSF.M,
  93. Tracks[index].MSF.S, Tracks[index].MSF.F);
  94. return 0;
  95. }
  96. void Unload_ISO(void)
  97. {
  98. int i;
  99. if (Pico_mcd == NULL) return;
  100. if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F);
  101. for(i = 1; i < 100; i++)
  102. {
  103. if (Pico_mcd->TOC.Tracks[i].F) fclose(Pico_mcd->TOC.Tracks[i].F);
  104. }
  105. memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks));
  106. }
  107. int FILE_Read_One_LBA_CDC(void)
  108. {
  109. int where_read = 0;
  110. // static char cp_buf[2560];
  111. if (Pico_mcd->s68k_regs[0x36] & 1) // DATA
  112. {
  113. if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
  114. if (Pico_mcd->scd.Cur_LBA < 0)
  115. where_read = 0;
  116. else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
  117. where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
  118. else where_read = Pico_mcd->scd.Cur_LBA;
  119. if (Pico_mcd->TOC.Tracks[0].ftype == TYPE_ISO) where_read <<= 11;
  120. else where_read = (where_read * 2352 + 16);
  121. // moved below..
  122. //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
  123. //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
  124. cdprintf("Read file CDC 1 data sector :\n");
  125. }
  126. else // AUDIO
  127. {
  128. // int rate, channel;
  129. if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3)
  130. {
  131. // TODO
  132. // MP3_Update(cp_buf, &rate, &channel, 0);
  133. // Write_CD_Audio((short *) cp_buf, rate, channel, 588);
  134. }
  135. cdprintf("Read file CDC 1 audio sector :\n");
  136. }
  137. // Update CDC stuff
  138. CDC_Update_Header();
  139. if (Pico_mcd->s68k_regs[0x36] & 1) // DATA track
  140. {
  141. if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
  142. {
  143. if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
  144. {
  145. // CAUTION : lookahead bit not implemented
  146. Pico_mcd->scd.Cur_LBA++;
  147. Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
  148. Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
  149. *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N;
  150. //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
  151. pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
  152. pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
  153. #ifdef DEBUG_CD
  154. cdprintf("Read -> WA = %d Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
  155. cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
  156. Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
  157. cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
  158. Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
  159. Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
  160. Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
  161. Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
  162. Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
  163. Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
  164. #endif
  165. }
  166. }
  167. }
  168. else // music track
  169. {
  170. Pico_mcd->scd.Cur_LBA++;
  171. Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
  172. Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
  173. if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
  174. {
  175. if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
  176. {
  177. // CAUTION : lookahead bit not implemented
  178. //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352);
  179. }
  180. }
  181. }
  182. if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
  183. {
  184. Pico_mcd->cdc.STAT.B.B0 = 0x80;
  185. if (Pico_mcd->cdc.CTRL.B.B0 & 0x10) // determine form bit form sub header ?
  186. {
  187. Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
  188. }
  189. else
  190. {
  191. Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
  192. }
  193. if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20; // ECC done
  194. else Pico_mcd->cdc.STAT.B.B3 = 0x00; // ECC not done
  195. if (Pico_mcd->cdc.IFCTRL & 0x20)
  196. {
  197. if (Pico_mcd->s68k_regs[0x33] & (1<<5))
  198. {
  199. dprintf("cdc dec irq 5");
  200. SekInterruptS68k(5);
  201. }
  202. Pico_mcd->cdc.IFSTAT &= ~0x20; // DEC interrupt happen
  203. Pico_mcd->cdc.Decode_Reg_Read = 0; // Reset read after DEC int
  204. }
  205. }
  206. return 0;
  207. }
  208. int FILE_Play_CD_LBA(void)
  209. {
  210. int index = Pico_mcd->scd.Cur_Track - 1;
  211. Pico_mcd->m.audio_track = index;
  212. cdprintf("Play track #%i", Pico_mcd->scd.Cur_Track);
  213. if (Pico_mcd->TOC.Tracks[index].F == NULL)
  214. {
  215. return 1;
  216. }
  217. if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3)
  218. {
  219. int pos1024 = 0;
  220. int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track);
  221. if (Track_LBA_Pos < 0) Track_LBA_Pos = 0;
  222. if (Track_LBA_Pos)
  223. pos1024 = Track_LBA_Pos * 1024 / Pico_mcd->TOC.Tracks[index].Length;
  224. mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024);
  225. }
  226. else
  227. {
  228. return 3;
  229. }
  230. return 0;
  231. }