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 ***********************************************************/
10 #include "../PicoInt.h"
13 //#define cdprintf(f,...) printf(f "\n",##__VA_ARGS__) // tmp
16 PICO_INTERNAL int Load_ISO(const char *iso_name, int is_bin)
18 int i, j, num_track, Cur_LBA, index, ret, iso_name_len;
19 _scd_track *Tracks = Pico_mcd->TOC.Tracks;
20 char tmp_name[1024], tmp_ext[10];
22 static char *exts[] = {
23 "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
24 "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
26 "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3",
30 if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(1);
34 Tracks[0].ftype = is_bin ? TYPE_BIN : TYPE_ISO;
36 Tracks[0].F = pmf = pm_open(iso_name);
37 if (Tracks[0].F == NULL)
44 if (Tracks[0].ftype == TYPE_ISO)
45 Tracks[0].Length = pmf->size >>= 11; // size in sectors
46 else Tracks[0].Length = pmf->size /= 2352;
48 Tracks[0].MSF.M = 0; // minutes
49 Tracks[0].MSF.S = 2; // seconds
50 Tracks[0].MSF.F = 0; // frames
52 cdprintf("Track 0 - %02d:%02d:%02d DATA", Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F);
54 Cur_LBA = Tracks[0].Length; // Size in sectors
56 iso_name_len = strlen(iso_name);
57 if (iso_name_len >= sizeof(tmp_name))
58 iso_name_len = sizeof(tmp_name) - 1;
60 for (num_track = 2, i = 0; i < 100; i++)
62 if (PicoCDLoadProgressCB != NULL && i > 1) PicoCDLoadProgressCB(i);
64 for (j = 0; j < sizeof(exts)/sizeof(char *); j++)
68 sprintf(tmp_ext, exts[j], i);
69 ext_len = strlen(tmp_ext);
71 memcpy(tmp_name, iso_name, iso_name_len + 1);
72 tmp_name[iso_name_len - 4] = 0;
73 strcat(tmp_name, tmp_ext);
75 tmp_file = fopen(tmp_name, "rb");
76 if (!tmp_file && i > 1 && iso_name_len > ext_len) {
77 tmp_name[iso_name_len - ext_len] = 0;
78 strcat(tmp_name, tmp_ext);
79 tmp_file = fopen(tmp_name, "rb");
85 index = num_track - 1;
87 ret = fseek(tmp_file, 0, SEEK_END);
88 fs = ftell(tmp_file); // used to calculate lenght
89 fseek(tmp_file, 0, SEEK_SET);
91 #if DONT_OPEN_MANY_FILES
92 // some systems (like PSP) can't have many open files at a time,
93 // so we work with their names instead.
95 tmp_file = (void *) strdup(tmp_name);
97 Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
98 Tracks[index].KBtps >>= 3;
99 if (ret != 0 || Tracks[index].KBtps <= 0)
101 cdprintf("Error track %i: rate %i", index, Tracks[index].KBtps);
102 #if !DONT_OPEN_MANY_FILES
110 Tracks[index].F = tmp_file;
112 LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
115 Tracks[index].ftype = TYPE_MP3;
117 fs /= Tracks[index].KBtps * 1000;
118 Tracks[index].Length = fs;
119 Cur_LBA += Tracks[index].Length;
121 cdprintf("Track %i: %s - %02d:%02d:%02d len=%i AUDIO", index, tmp_name, Tracks[index].MSF.M,
122 Tracks[index].MSF.S, Tracks[index].MSF.F, fs);
130 Pico_mcd->TOC.Last_Track = num_track - 1;
132 index = num_track - 1;
134 LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
136 cdprintf("End CD - %02d:%02d:%02d\n\n", Tracks[index].MSF.M,
137 Tracks[index].MSF.S, Tracks[index].MSF.F);
139 if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(100);
145 PICO_INTERNAL void Unload_ISO(void)
149 if (Pico_mcd == NULL) return;
151 if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F);
153 for(i = 1; i < 100; i++)
155 if (Pico_mcd->TOC.Tracks[i].F != NULL)
156 #if !DONT_OPEN_MANY_FILES
157 fclose(Pico_mcd->TOC.Tracks[i].F);
159 free(Pico_mcd->TOC.Tracks[i].F);
162 memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks));
166 PICO_INTERNAL int FILE_Read_One_LBA_CDC(void)
168 // static char cp_buf[2560];
170 if (Pico_mcd->s68k_regs[0x36] & 1) // DATA
172 if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
175 //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
176 //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
178 cdprintf("Read file CDC 1 data sector :\n");
182 // int rate, channel;
184 // if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3)
187 // MP3_Update(cp_buf, &rate, &channel, 0);
188 // Write_CD_Audio((short *) cp_buf, rate, channel, 588);
191 cdprintf("Read file CDC 1 audio sector :\n");
198 if (Pico_mcd->s68k_regs[0x36] & 1) // DATA track
200 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
202 if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
206 // CAUTION : lookahead bit not implemented
208 if (Pico_mcd->scd.Cur_LBA < 0)
210 else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
211 where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
212 else where_read = Pico_mcd->scd.Cur_LBA;
214 Pico_mcd->scd.Cur_LBA++;
216 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
217 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
219 *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N;
220 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
222 //pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
223 //pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
224 PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read);
227 cdprintf("Read -> WA = %d Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
228 cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
229 Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
230 cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
231 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
232 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
233 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
234 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
235 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
236 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
244 Pico_mcd->scd.Cur_LBA++;
246 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
247 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
249 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
251 if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
253 // CAUTION : lookahead bit not implemented
255 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352);
260 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
262 Pico_mcd->cdc.STAT.B.B0 = 0x80;
264 if (Pico_mcd->cdc.CTRL.B.B0 & 0x10) // determine form bit form sub header ?
266 Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
270 Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
273 if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20; // ECC done
274 else Pico_mcd->cdc.STAT.B.B3 = 0x00; // ECC not done
276 if (Pico_mcd->cdc.IFCTRL & 0x20)
278 if (Pico_mcd->s68k_regs[0x33] & (1<<5))
280 elprintf(EL_INTS, "cdc dec irq 5");
284 Pico_mcd->cdc.IFSTAT &= ~0x20; // DEC interrupt happen
285 Pico_mcd->cdc.Decode_Reg_Read = 0; // Reset read after DEC int
294 PICO_INTERNAL int FILE_Play_CD_LBA(void)
296 int index = Pico_mcd->scd.Cur_Track - 1;
297 Pico_mcd->m.audio_track = index;
299 cdprintf("Play track #%i", Pico_mcd->scd.Cur_Track);
301 if (Pico_mcd->TOC.Tracks[index].F == NULL)
306 if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3)
309 int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track);
310 if (Track_LBA_Pos < 0) Track_LBA_Pos = 0;
312 pos1024 = Track_LBA_Pos * 1024 / Pico_mcd->TOC.Tracks[index].Length;
314 mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024);