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1 | /*********************************************************** |
2 | * * |
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 * |
7 | * * |
8 | ***********************************************************/ |
9 | |
bf098bc5 |
10 | #include <sys/stat.h> |
11 | #include "cd_file.h" |
12 | |
13 | #include "../PicoInt.h" |
14 | |
c459aefd |
15 | #define cdprintf dprintf |
bf098bc5 |
16 | //#define cdprintf(x...) |
c459aefd |
17 | #define DEBUG_CD |
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18 | |
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19 | |
20 | void FILE_End(void) |
21 | { |
22 | Unload_ISO(); |
23 | } |
24 | |
25 | |
26 | int Load_ISO(const char *iso_name, int is_bin) |
27 | { |
cb0316e4 |
28 | int i, j, num_track, Cur_LBA, index, ret, iso_name_len; |
75736070 |
29 | _scd_track *Tracks = Pico_mcd->TOC.Tracks; |
bf098bc5 |
30 | char tmp_name[1024], tmp_ext[10]; |
83bd0b76 |
31 | pm_file *pmf; |
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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", |
51a902ae |
35 | "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3", |
bf098bc5 |
36 | /* "%02d.wav", " %02d.wav", "-%02d.wav", "_%02d.wav", " - %02d.wav", |
37 | "%d.wav", " %d.wav", "-%d.wav", "_%d.wav", " - %2d.wav" */ |
38 | }; |
39 | |
40 | Unload_ISO(); |
41 | |
75736070 |
42 | Tracks[0].ftype = is_bin ? TYPE_BIN : TYPE_ISO; |
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43 | |
83bd0b76 |
44 | Tracks[0].F = pmf = pm_open(iso_name); |
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45 | if (Tracks[0].F == NULL) |
46 | { |
75736070 |
47 | Tracks[0].ftype = 0; |
cb0316e4 |
48 | Tracks[0].Length = 0; |
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49 | return -1; |
50 | } |
51 | |
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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; |
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55 | |
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56 | Tracks[0].MSF.M = 0; // minutes |
57 | Tracks[0].MSF.S = 2; // seconds |
58 | Tracks[0].MSF.F = 0; // frames |
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59 | |
75736070 |
60 | cdprintf("Track 0 - %02d:%02d:%02d DATA", Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F); |
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61 | |
cb0316e4 |
62 | Cur_LBA = Tracks[0].Length; // Size in sectors |
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63 | |
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64 | iso_name_len = strlen(iso_name); |
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65 | |
cb0316e4 |
66 | for (num_track = 2, i = 0; i < 100; i++) |
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67 | { |
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68 | for(j = 0; j < sizeof(exts)/sizeof(char *); j++) |
69 | { |
cb0316e4 |
70 | int ext_len; |
83bd0b76 |
71 | FILE *tmp_file; |
bf098bc5 |
72 | sprintf(tmp_ext, exts[j], i); |
cb0316e4 |
73 | ext_len = strlen(tmp_ext); |
74 | |
75 | memcpy(tmp_name, iso_name, iso_name_len + 1); |
76 | tmp_name[iso_name_len - 4] = 0; |
bf098bc5 |
77 | strcat(tmp_name, tmp_ext); |
78 | |
79 | tmp_file = fopen(tmp_name, "rb"); |
cb0316e4 |
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"); |
84 | } |
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85 | |
86 | if (tmp_file) |
87 | { |
cb0316e4 |
88 | int fs; |
83bd0b76 |
89 | struct stat file_stat; |
75736070 |
90 | index = num_track - 1; |
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91 | |
cb0316e4 |
92 | ret = stat(tmp_name, &file_stat); |
93 | fs = file_stat.st_size; // used to calculate lenght |
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94 | |
cb0316e4 |
95 | Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs); |
96 | Tracks[index].KBtps >>= 3; |
97 | if (ret != 0 || Tracks[index].KBtps <= 0) |
98 | { |
99 | cdprintf("Error track %i: stat %i, rate %i", index, ret, Tracks[index].KBtps); |
100 | fclose(tmp_file); |
101 | continue; |
102 | } |
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103 | |
104 | Tracks[index].F = tmp_file; |
105 | |
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106 | LBA_to_MSF(Cur_LBA, &Tracks[index].MSF); |
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107 | |
bf098bc5 |
108 | // MP3 File |
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109 | Tracks[index].ftype = TYPE_MP3; |
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110 | fs *= 75; |
cb0316e4 |
111 | fs /= Tracks[index].KBtps * 1000; |
112 | Tracks[index].Length = fs; |
113 | Cur_LBA += Tracks[index].Length; |
114 | |
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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); |
bf098bc5 |
117 | |
118 | num_track++; |
119 | break; |
120 | } |
121 | } |
122 | } |
123 | |
75736070 |
124 | Pico_mcd->TOC.Last_Track = num_track - 1; |
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125 | |
75736070 |
126 | index = num_track - 1; |
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127 | |
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128 | LBA_to_MSF(Cur_LBA, &Tracks[index].MSF); |
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129 | |
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130 | cdprintf("End CD - %02d:%02d:%02d\n\n", Tracks[index].MSF.M, |
131 | Tracks[index].MSF.S, Tracks[index].MSF.F); |
bf098bc5 |
132 | |
133 | return 0; |
134 | } |
135 | |
136 | |
137 | void Unload_ISO(void) |
138 | { |
139 | int i; |
140 | |
75736070 |
141 | if (Pico_mcd == NULL) return; |
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142 | |
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143 | if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F); |
144 | |
145 | for(i = 1; i < 100; i++) |
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146 | { |
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147 | if (Pico_mcd->TOC.Tracks[i].F) fclose(Pico_mcd->TOC.Tracks[i].F); |
bf098bc5 |
148 | } |
83bd0b76 |
149 | memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks)); |
bf098bc5 |
150 | } |
151 | |
152 | |
0a051f55 |
153 | void PicoCDBufferRead(void *dest, int lba); |
154 | |
155 | |
bf098bc5 |
156 | int FILE_Read_One_LBA_CDC(void) |
157 | { |
75736070 |
158 | // static char cp_buf[2560]; |
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159 | |
160 | if (Pico_mcd->s68k_regs[0x36] & 1) // DATA |
161 | { |
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162 | if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1; |
bf098bc5 |
163 | |
75736070 |
164 | // moved below.. |
165 | //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET); |
166 | //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F); |
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167 | |
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168 | cdprintf("Read file CDC 1 data sector :\n"); |
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169 | } |
170 | else // AUDIO |
171 | { |
172 | // int rate, channel; |
173 | |
0a051f55 |
174 | // if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3) |
bf098bc5 |
175 | { |
176 | // TODO |
177 | // MP3_Update(cp_buf, &rate, &channel, 0); |
178 | // Write_CD_Audio((short *) cp_buf, rate, channel, 588); |
179 | } |
180 | |
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181 | cdprintf("Read file CDC 1 audio sector :\n"); |
bf098bc5 |
182 | } |
183 | |
184 | // Update CDC stuff |
185 | |
186 | CDC_Update_Header(); |
187 | |
188 | if (Pico_mcd->s68k_regs[0x36] & 1) // DATA track |
189 | { |
190 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
191 | { |
192 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer |
193 | { |
0a051f55 |
194 | int where_read = 0; |
195 | |
bf098bc5 |
196 | // CAUTION : lookahead bit not implemented |
197 | |
0a051f55 |
198 | if (Pico_mcd->scd.Cur_LBA < 0) |
199 | where_read = 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; |
203 | |
bf098bc5 |
204 | Pico_mcd->scd.Cur_LBA++; |
205 | |
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; |
208 | |
83bd0b76 |
209 | *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N; |
75736070 |
210 | //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048); |
211 | |
0a051f55 |
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); |
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215 | |
216 | #ifdef DEBUG_CD |
c459aefd |
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, |
bf098bc5 |
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]); |
227 | #endif |
228 | } |
229 | |
230 | } |
231 | } |
232 | else // music track |
233 | { |
234 | Pico_mcd->scd.Cur_LBA++; |
235 | |
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; |
238 | |
239 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
240 | { |
241 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer |
242 | { |
243 | // CAUTION : lookahead bit not implemented |
244 | |
75736070 |
245 | //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352); |
bf098bc5 |
246 | } |
247 | } |
248 | } |
249 | |
250 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
251 | { |
252 | Pico_mcd->cdc.STAT.B.B0 = 0x80; |
253 | |
254 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x10) // determine form bit form sub header ? |
255 | { |
256 | Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08; |
257 | } |
258 | else |
259 | { |
260 | Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C; |
261 | } |
262 | |
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 |
265 | |
266 | if (Pico_mcd->cdc.IFCTRL & 0x20) |
267 | { |
268 | if (Pico_mcd->s68k_regs[0x33] & (1<<5)) |
269 | { |
270 | dprintf("cdc dec irq 5"); |
271 | SekInterruptS68k(5); |
272 | } |
273 | |
75736070 |
274 | Pico_mcd->cdc.IFSTAT &= ~0x20; // DEC interrupt happen |
275 | Pico_mcd->cdc.Decode_Reg_Read = 0; // Reset read after DEC int |
bf098bc5 |
276 | } |
277 | } |
278 | |
279 | |
280 | return 0; |
281 | } |
282 | |
283 | |
284 | int FILE_Play_CD_LBA(void) |
285 | { |
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286 | int index = Pico_mcd->scd.Cur_Track - 1; |
287 | Pico_mcd->m.audio_track = index; |
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288 | |
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289 | cdprintf("Play track #%i", Pico_mcd->scd.Cur_Track); |
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290 | |
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291 | if (Pico_mcd->TOC.Tracks[index].F == NULL) |
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292 | { |
293 | return 1; |
294 | } |
295 | |
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296 | if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3) |
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297 | { |
75736070 |
298 | int pos1024 = 0; |
bf098bc5 |
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; |
cb0316e4 |
301 | if (Track_LBA_Pos) |
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302 | pos1024 = Track_LBA_Pos * 1024 / Pico_mcd->TOC.Tracks[index].Length; |
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303 | |
75736070 |
304 | mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024); |
bf098bc5 |
305 | } |
306 | else |
307 | { |
308 | return 3; |
309 | } |
310 | |
311 | return 0; |
312 | } |
313 | |