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 dprintf
14 //#define cdprintf(x...)
15 //#define cdprintf(f,...) printf(f "\n",##__VA_ARGS__) // tmp
18 PICO_INTERNAL int Load_ISO(const char *iso_name, int is_bin)
20 int i, j, num_track, Cur_LBA, index, ret, iso_name_len;
21 _scd_track *Tracks = Pico_mcd->TOC.Tracks;
22 char tmp_name[1024], tmp_ext[10];
24 static char *exts[] = {
25 "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3",
26 "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3",
28 "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3",
32 if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(1);
36 Tracks[0].ftype = is_bin ? TYPE_BIN : TYPE_ISO;
38 Tracks[0].F = pmf = pm_open(iso_name);
39 if (Tracks[0].F == NULL)
46 if (Tracks[0].ftype == TYPE_ISO)
47 Tracks[0].Length = pmf->size >>= 11; // size in sectors
48 else Tracks[0].Length = pmf->size /= 2352;
50 Tracks[0].MSF.M = 0; // minutes
51 Tracks[0].MSF.S = 2; // seconds
52 Tracks[0].MSF.F = 0; // frames
54 cdprintf("Track 0 - %02d:%02d:%02d DATA", Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F);
56 Cur_LBA = Tracks[0].Length; // Size in sectors
58 iso_name_len = strlen(iso_name);
59 if (iso_name_len >= sizeof(tmp_name))
60 iso_name_len = sizeof(tmp_name) - 1;
62 for (num_track = 2, i = 0; i < 100; i++)
64 if (PicoCDLoadProgressCB != NULL && i > 1) PicoCDLoadProgressCB(i);
66 for (j = 0; j < sizeof(exts)/sizeof(char *); j++)
70 sprintf(tmp_ext, exts[j], i);
71 ext_len = strlen(tmp_ext);
73 memcpy(tmp_name, iso_name, iso_name_len + 1);
74 tmp_name[iso_name_len - 4] = 0;
75 strcat(tmp_name, tmp_ext);
77 tmp_file = fopen(tmp_name, "rb");
78 if (!tmp_file && i > 1 && iso_name_len > ext_len) {
79 tmp_name[iso_name_len - ext_len] = 0;
80 strcat(tmp_name, tmp_ext);
81 tmp_file = fopen(tmp_name, "rb");
87 index = num_track - 1;
89 ret = fseek(tmp_file, 0, SEEK_END);
90 fs = ftell(tmp_file); // used to calculate lenght
91 fseek(tmp_file, 0, SEEK_SET);
93 #if DONT_OPEN_MANY_FILES
94 // some systems (like PSP) can't have many open files at a time,
95 // so we work with their names instead.
97 tmp_file = (void *) strdup(tmp_name);
99 Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs);
100 Tracks[index].KBtps >>= 3;
101 if (ret != 0 || Tracks[index].KBtps <= 0)
103 cdprintf("Error track %i: rate %i", index, Tracks[index].KBtps);
104 #if !DONT_OPEN_MANY_FILES
112 Tracks[index].F = tmp_file;
114 LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
117 Tracks[index].ftype = TYPE_MP3;
119 fs /= Tracks[index].KBtps * 1000;
120 Tracks[index].Length = fs;
121 Cur_LBA += Tracks[index].Length;
123 cdprintf("Track %i: %s - %02d:%02d:%02d len=%i AUDIO", index, tmp_name, Tracks[index].MSF.M,
124 Tracks[index].MSF.S, Tracks[index].MSF.F, fs);
132 Pico_mcd->TOC.Last_Track = num_track - 1;
134 index = num_track - 1;
136 LBA_to_MSF(Cur_LBA, &Tracks[index].MSF);
138 cdprintf("End CD - %02d:%02d:%02d\n\n", Tracks[index].MSF.M,
139 Tracks[index].MSF.S, Tracks[index].MSF.F);
141 if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(100);
147 PICO_INTERNAL void Unload_ISO(void)
151 if (Pico_mcd == NULL) return;
153 if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F);
155 for(i = 1; i < 100; i++)
157 if (Pico_mcd->TOC.Tracks[i].F != NULL)
158 #if !DONT_OPEN_MANY_FILES
159 fclose(Pico_mcd->TOC.Tracks[i].F);
161 free(Pico_mcd->TOC.Tracks[i].F);
164 memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks));
168 PICO_INTERNAL int FILE_Read_One_LBA_CDC(void)
170 // static char cp_buf[2560];
172 if (Pico_mcd->s68k_regs[0x36] & 1) // DATA
174 if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
177 //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
178 //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
180 cdprintf("Read file CDC 1 data sector :\n");
184 // int rate, channel;
186 // if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3)
189 // MP3_Update(cp_buf, &rate, &channel, 0);
190 // Write_CD_Audio((short *) cp_buf, rate, channel, 588);
193 cdprintf("Read file CDC 1 audio sector :\n");
200 if (Pico_mcd->s68k_regs[0x36] & 1) // DATA track
202 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
204 if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
208 // CAUTION : lookahead bit not implemented
210 if (Pico_mcd->scd.Cur_LBA < 0)
212 else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
213 where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
214 else where_read = Pico_mcd->scd.Cur_LBA;
216 Pico_mcd->scd.Cur_LBA++;
218 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
219 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
221 *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N;
222 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
224 //pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
225 //pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
226 PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read);
229 cdprintf("Read -> WA = %d Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);
230 cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0,
231 Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3);
232 cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n",
233 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF],
234 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF],
235 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF],
236 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF],
237 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF],
238 Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]);
246 Pico_mcd->scd.Cur_LBA++;
248 Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
249 Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF;
251 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
253 if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
255 // CAUTION : lookahead bit not implemented
257 //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352);
262 if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable
264 Pico_mcd->cdc.STAT.B.B0 = 0x80;
266 if (Pico_mcd->cdc.CTRL.B.B0 & 0x10) // determine form bit form sub header ?
268 Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08;
272 Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C;
275 if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20; // ECC done
276 else Pico_mcd->cdc.STAT.B.B3 = 0x00; // ECC not done
278 if (Pico_mcd->cdc.IFCTRL & 0x20)
280 if (Pico_mcd->s68k_regs[0x33] & (1<<5))
282 dprintf("cdc dec irq 5");
286 Pico_mcd->cdc.IFSTAT &= ~0x20; // DEC interrupt happen
287 Pico_mcd->cdc.Decode_Reg_Read = 0; // Reset read after DEC int
296 PICO_INTERNAL int FILE_Play_CD_LBA(void)
298 int index = Pico_mcd->scd.Cur_Track - 1;
299 Pico_mcd->m.audio_track = index;
301 cdprintf("Play track #%i", Pico_mcd->scd.Cur_Track);
303 if (Pico_mcd->TOC.Tracks[index].F == NULL)
308 if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3)
311 int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track);
312 if (Track_LBA_Pos < 0) Track_LBA_Pos = 0;
314 pos1024 = Track_LBA_Pos * 1024 / Pico_mcd->TOC.Tracks[index].Length;
316 mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024);