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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 | |
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10 | #include <sys/stat.h> |
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11 | |
12 | #include "../PicoInt.h" |
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13 | #include "cd_file.h" |
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14 | |
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15 | #define cdprintf dprintf |
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16 | //#define cdprintf(x...) |
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17 | #define DEBUG_CD |
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18 | |
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19 | |
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20 | PICO_INTERNAL int Load_ISO(const char *iso_name, int is_bin) |
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21 | { |
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22 | int i, j, num_track, Cur_LBA, index, ret, iso_name_len; |
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23 | _scd_track *Tracks = Pico_mcd->TOC.Tracks; |
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24 | char tmp_name[1024], tmp_ext[10]; |
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25 | pm_file *pmf; |
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26 | static char *exts[] = { |
27 | "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3", |
28 | "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3", |
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29 | "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3", |
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30 | /* "%02d.wav", " %02d.wav", "-%02d.wav", "_%02d.wav", " - %02d.wav", |
31 | "%d.wav", " %d.wav", "-%d.wav", "_%d.wav", " - %2d.wav" */ |
32 | }; |
33 | |
34 | Unload_ISO(); |
35 | |
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36 | Tracks[0].ftype = is_bin ? TYPE_BIN : TYPE_ISO; |
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37 | |
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38 | Tracks[0].F = pmf = pm_open(iso_name); |
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39 | if (Tracks[0].F == NULL) |
40 | { |
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41 | Tracks[0].ftype = 0; |
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42 | Tracks[0].Length = 0; |
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43 | return -1; |
44 | } |
45 | |
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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; |
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49 | |
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50 | Tracks[0].MSF.M = 0; // minutes |
51 | Tracks[0].MSF.S = 2; // seconds |
52 | Tracks[0].MSF.F = 0; // frames |
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53 | |
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54 | cdprintf("Track 0 - %02d:%02d:%02d DATA", Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F); |
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55 | |
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56 | Cur_LBA = Tracks[0].Length; // Size in sectors |
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57 | |
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58 | iso_name_len = strlen(iso_name); |
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59 | |
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60 | for (num_track = 2, i = 0; i < 100; i++) |
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61 | { |
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62 | for(j = 0; j < sizeof(exts)/sizeof(char *); j++) |
63 | { |
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64 | int ext_len; |
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65 | FILE *tmp_file; |
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66 | sprintf(tmp_ext, exts[j], i); |
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67 | ext_len = strlen(tmp_ext); |
68 | |
69 | memcpy(tmp_name, iso_name, iso_name_len + 1); |
70 | tmp_name[iso_name_len - 4] = 0; |
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71 | strcat(tmp_name, tmp_ext); |
72 | |
73 | tmp_file = fopen(tmp_name, "rb"); |
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74 | if (!tmp_file && i > 1 && iso_name_len > ext_len) { |
75 | tmp_name[iso_name_len - ext_len] = 0; |
76 | strcat(tmp_name, tmp_ext); |
77 | tmp_file = fopen(tmp_name, "rb"); |
78 | } |
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79 | |
80 | if (tmp_file) |
81 | { |
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82 | int fs; |
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83 | struct stat file_stat; |
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84 | index = num_track - 1; |
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85 | |
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86 | ret = stat(tmp_name, &file_stat); |
87 | fs = file_stat.st_size; // used to calculate lenght |
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88 | |
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89 | Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs); |
90 | Tracks[index].KBtps >>= 3; |
91 | if (ret != 0 || Tracks[index].KBtps <= 0) |
92 | { |
93 | cdprintf("Error track %i: stat %i, rate %i", index, ret, Tracks[index].KBtps); |
94 | fclose(tmp_file); |
95 | continue; |
96 | } |
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97 | |
98 | Tracks[index].F = tmp_file; |
99 | |
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100 | LBA_to_MSF(Cur_LBA, &Tracks[index].MSF); |
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101 | |
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102 | // MP3 File |
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103 | Tracks[index].ftype = TYPE_MP3; |
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104 | fs *= 75; |
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105 | fs /= Tracks[index].KBtps * 1000; |
106 | Tracks[index].Length = fs; |
107 | Cur_LBA += Tracks[index].Length; |
108 | |
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109 | cdprintf("Track %i: %s - %02d:%02d:%02d len=%i AUDIO", index, tmp_name, Tracks[index].MSF.M, |
110 | Tracks[index].MSF.S, Tracks[index].MSF.F, fs); |
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111 | |
112 | num_track++; |
113 | break; |
114 | } |
115 | } |
116 | } |
117 | |
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118 | Pico_mcd->TOC.Last_Track = num_track - 1; |
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119 | |
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120 | index = num_track - 1; |
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121 | |
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122 | LBA_to_MSF(Cur_LBA, &Tracks[index].MSF); |
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123 | |
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124 | cdprintf("End CD - %02d:%02d:%02d\n\n", Tracks[index].MSF.M, |
125 | Tracks[index].MSF.S, Tracks[index].MSF.F); |
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126 | |
127 | return 0; |
128 | } |
129 | |
130 | |
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131 | PICO_INTERNAL void Unload_ISO(void) |
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132 | { |
133 | int i; |
134 | |
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135 | if (Pico_mcd == NULL) return; |
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136 | |
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137 | if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F); |
138 | |
139 | for(i = 1; i < 100; i++) |
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140 | { |
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141 | if (Pico_mcd->TOC.Tracks[i].F) fclose(Pico_mcd->TOC.Tracks[i].F); |
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142 | } |
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143 | memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks)); |
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144 | } |
145 | |
146 | |
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147 | PICO_INTERNAL int FILE_Read_One_LBA_CDC(void) |
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148 | { |
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149 | // static char cp_buf[2560]; |
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150 | |
151 | if (Pico_mcd->s68k_regs[0x36] & 1) // DATA |
152 | { |
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153 | if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1; |
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154 | |
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155 | // moved below.. |
156 | //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET); |
157 | //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F); |
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158 | |
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159 | cdprintf("Read file CDC 1 data sector :\n"); |
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160 | } |
161 | else // AUDIO |
162 | { |
163 | // int rate, channel; |
164 | |
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165 | // if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3) |
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166 | { |
167 | // TODO |
168 | // MP3_Update(cp_buf, &rate, &channel, 0); |
169 | // Write_CD_Audio((short *) cp_buf, rate, channel, 588); |
170 | } |
171 | |
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172 | cdprintf("Read file CDC 1 audio sector :\n"); |
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173 | } |
174 | |
175 | // Update CDC stuff |
176 | |
177 | CDC_Update_Header(); |
178 | |
179 | if (Pico_mcd->s68k_regs[0x36] & 1) // DATA track |
180 | { |
181 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
182 | { |
183 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer |
184 | { |
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185 | int where_read = 0; |
186 | |
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187 | // CAUTION : lookahead bit not implemented |
188 | |
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189 | if (Pico_mcd->scd.Cur_LBA < 0) |
190 | where_read = 0; |
191 | else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length) |
192 | where_read = Pico_mcd->TOC.Tracks[0].Length - 1; |
193 | else where_read = Pico_mcd->scd.Cur_LBA; |
194 | |
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195 | Pico_mcd->scd.Cur_LBA++; |
196 | |
197 | Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA |
198 | Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF; |
199 | |
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200 | *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N; |
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201 | //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048); |
202 | |
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203 | //pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET); |
204 | //pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F); |
205 | PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read); |
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206 | |
207 | #ifdef DEBUG_CD |
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208 | cdprintf("Read -> WA = %d Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF); |
209 | cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0, |
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210 | Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3); |
211 | cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n", |
212 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF], |
213 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF], |
214 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF], |
215 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF], |
216 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF], |
217 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]); |
218 | #endif |
219 | } |
220 | |
221 | } |
222 | } |
223 | else // music track |
224 | { |
225 | Pico_mcd->scd.Cur_LBA++; |
226 | |
227 | Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA |
228 | Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF; |
229 | |
230 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
231 | { |
232 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer |
233 | { |
234 | // CAUTION : lookahead bit not implemented |
235 | |
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236 | //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352); |
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237 | } |
238 | } |
239 | } |
240 | |
241 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
242 | { |
243 | Pico_mcd->cdc.STAT.B.B0 = 0x80; |
244 | |
245 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x10) // determine form bit form sub header ? |
246 | { |
247 | Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08; |
248 | } |
249 | else |
250 | { |
251 | Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C; |
252 | } |
253 | |
254 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20; // ECC done |
255 | else Pico_mcd->cdc.STAT.B.B3 = 0x00; // ECC not done |
256 | |
257 | if (Pico_mcd->cdc.IFCTRL & 0x20) |
258 | { |
259 | if (Pico_mcd->s68k_regs[0x33] & (1<<5)) |
260 | { |
261 | dprintf("cdc dec irq 5"); |
262 | SekInterruptS68k(5); |
263 | } |
264 | |
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265 | Pico_mcd->cdc.IFSTAT &= ~0x20; // DEC interrupt happen |
266 | Pico_mcd->cdc.Decode_Reg_Read = 0; // Reset read after DEC int |
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267 | } |
268 | } |
269 | |
270 | |
271 | return 0; |
272 | } |
273 | |
274 | |
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275 | PICO_INTERNAL int FILE_Play_CD_LBA(void) |
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276 | { |
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277 | int index = Pico_mcd->scd.Cur_Track - 1; |
278 | Pico_mcd->m.audio_track = index; |
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279 | |
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280 | cdprintf("Play track #%i", Pico_mcd->scd.Cur_Track); |
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281 | |
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282 | if (Pico_mcd->TOC.Tracks[index].F == NULL) |
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283 | { |
284 | return 1; |
285 | } |
286 | |
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287 | if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3) |
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288 | { |
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289 | int pos1024 = 0; |
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290 | int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track); |
291 | if (Track_LBA_Pos < 0) Track_LBA_Pos = 0; |
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292 | if (Track_LBA_Pos) |
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293 | pos1024 = Track_LBA_Pos * 1024 / Pico_mcd->TOC.Tracks[index].Length; |
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294 | |
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295 | mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024); |
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296 | } |
297 | else |
298 | { |
299 | return 3; |
300 | } |
301 | |
302 | return 0; |
303 | } |
304 | |