1 /***********************************************************
3 * This source was taken from the Gens project *
4 * Written by Stéphane Dallongeville *
5 * Copyright (c) 2002 by Stéphane Dallongeville *
6 * Modified/adapted for PicoDrive by notaz, 2007 *
8 ***********************************************************/
13 #include "../PicoInt.h"
15 #define cdprintf dprintf
16 //#define cdprintf(x...)
26 int Load_ISO(const char *iso_name, int is_bin)
28 int i, j, num_track, Cur_LBA, index, ret, iso_name_len;
29 _scd_track *Tracks = Pico_mcd->TOC.Tracks;
30 char tmp_name[1024], tmp_ext[10];
32 static char *exts[] = {
33 "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
34 "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
35 "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3",
36 /* "%02d.wav", " %02d.wav", "-%02d.wav", "_%02d.wav", " - %02d.wav",
37 "%d.wav", " %d.wav", "-%d.wav", "_%d.wav", " - %2d.wav" */
42 Tracks[0].ftype = is_bin ? TYPE_BIN : TYPE_ISO;
44 Tracks[0].F = pmf = pm_open(iso_name);
45 if (Tracks[0].F == NULL)
52 if (Tracks[0].ftype == TYPE_ISO)
53 Tracks[0].Length = pmf->size >>= 11; // size in sectors
54 else Tracks[0].Length = pmf->size /= 2352;
56 Tracks[0].MSF.M = 0; // minutes
57 Tracks[0].MSF.S = 2; // seconds
58 Tracks[0].MSF.F = 0; // frames
60 cdprintf("Track 0 - %02d:%02d:%02d DATA", Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F);
62 Cur_LBA = Tracks[0].Length; // Size in sectors
64 iso_name_len = strlen(iso_name);
66 for (num_track = 2, i = 0; i < 100; i++)
68 for(j = 0; j < sizeof(exts)/sizeof(char *); j++)
72 sprintf(tmp_ext, exts[j], i);
73 ext_len = strlen(tmp_ext);
75 memcpy(tmp_name, iso_name, iso_name_len + 1);
76 tmp_name[iso_name_len - 4] = 0;
77 strcat(tmp_name, tmp_ext);
79 tmp_file = fopen(tmp_name, "rb");
80 if (!tmp_file && i > 1 && iso_name_len > ext_len) {
81 tmp_name[iso_name_len - ext_len] = 0;
82 strcat(tmp_name, tmp_ext);
83 tmp_file = fopen(tmp_name, "rb");
89 struct stat file_stat;
90 index = num_track - 1;
92 ret = stat(tmp_name, &file_stat);
93 fs = file_stat.st_size; // used to calculate lenght
95 Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
96 Tracks[index].KBtps >>= 3;
97 if (ret != 0 || Tracks[index].KBtps <= 0)
99 cdprintf("Error track %i: stat %i, rate %i", index, ret, Tracks[index].KBtps);
104 Tracks[index].F = tmp_file;
106 LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
109 Tracks[index].ftype = TYPE_MP3;
111 fs /= Tracks[index].KBtps * 1000;
112 Tracks[index].Length = fs;
113 Cur_LBA += Tracks[index].Length;
115 cdprintf("Track %i: %s - %02d:%02d:%02d len=%i AUDIO", index, tmp_name, Tracks[index].MSF.M,
116 Tracks[index].MSF.S, Tracks[index].MSF.F, fs);
124 Pico_mcd->TOC.Last_Track = num_track - 1;
126 index = num_track - 1;
128 LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
130 cdprintf("End CD - %02d:%02d:%02d\n\n", Tracks[index].MSF.M,
131 Tracks[index].MSF.S, Tracks[index].MSF.F);
137 void Unload_ISO(void)
141 if (Pico_mcd == NULL) return;
143 if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F);
145 for(i = 1; i < 100; i++)
147 if (Pico_mcd->TOC.Tracks[i].F) fclose(Pico_mcd->TOC.Tracks[i].F);
149 memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks));
153 void PicoCDBufferRead(void *dest, int lba);
156 int FILE_Read_One_LBA_CDC(void)
158 // static char cp_buf[2560];
160 if (Pico_mcd->s68k_regs[0x36] & 1) // DATA
162 if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
165 //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
166 //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
168 cdprintf("Read file CDC 1 data sector :\n");
172 // int rate, channel;
174 // if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3)
177 // MP3_Update(cp_buf, &rate, &channel, 0);
178 // Write_CD_Audio((short *) cp_buf, rate, channel, 588);
181 cdprintf("Read file CDC 1 audio sector :\n");
188 if (Pico_mcd->s68k_regs[0x36] & 1) // DATA track
190 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
192 if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
196 // CAUTION : lookahead bit not implemented
198 if (Pico_mcd->scd.Cur_LBA < 0)
200 else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
201 where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
202 else where_read = Pico_mcd->scd.Cur_LBA;
204 Pico_mcd->scd.Cur_LBA++;
206 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
207 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
209 *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N;
210 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
212 //pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
213 //pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
214 PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read);
217 cdprintf("Read -> WA = %d Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
218 cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
219 Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
220 cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
221 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
222 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
223 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
224 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
225 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
226 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
234 Pico_mcd->scd.Cur_LBA++;
236 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
237 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
239 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
241 if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
243 // CAUTION : lookahead bit not implemented
245 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352);
250 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
252 Pico_mcd->cdc.STAT.B.B0 = 0x80;
254 if (Pico_mcd->cdc.CTRL.B.B0 & 0x10) // determine form bit form sub header ?
256 Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
260 Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
263 if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20; // ECC done
264 else Pico_mcd->cdc.STAT.B.B3 = 0x00; // ECC not done
266 if (Pico_mcd->cdc.IFCTRL & 0x20)
268 if (Pico_mcd->s68k_regs[0x33] & (1<<5))
270 dprintf("cdc dec irq 5");
274 Pico_mcd->cdc.IFSTAT &= ~0x20; // DEC interrupt happen
275 Pico_mcd->cdc.Decode_Reg_Read = 0; // Reset read after DEC int
284 int FILE_Play_CD_LBA(void)
286 int index = Pico_mcd->scd.Cur_Track - 1;
287 Pico_mcd->m.audio_track = index;
289 cdprintf("Play track #%i", Pico_mcd->scd.Cur_Track);
291 if (Pico_mcd->TOC.Tracks[index].F == NULL)
296 if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3)
299 int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track);
300 if (Track_LBA_Pos < 0) Track_LBA_Pos = 0;
302 pos1024 = Track_LBA_Pos * 1024 / Pico_mcd->TOC.Tracks[index].Length;
304 mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024);