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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 "../PicoInt.h" |
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11 | #include "cd_file.h" |
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12 | |
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13 | #define cdprintf dprintf |
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14 | //#define cdprintf(x...) |
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15 | //#define cdprintf(f,...) printf(f "\n",##__VA_ARGS__) // tmp |
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16 | #define DEBUG_CD |
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17 | |
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18 | PICO_INTERNAL int Load_ISO(const char *iso_name, int is_bin) |
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19 | { |
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20 | int i, j, num_track, Cur_LBA, index, ret, iso_name_len; |
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21 | _scd_track *Tracks = Pico_mcd->TOC.Tracks; |
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22 | char tmp_name[1024], tmp_ext[10]; |
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23 | pm_file *pmf; |
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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", |
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27 | #if CASE_SENSITIVE_FS |
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28 | "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3", |
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29 | #endif |
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30 | }; |
31 | |
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32 | if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(1); |
33 | |
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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 | if (iso_name_len >= sizeof(tmp_name)) |
60 | iso_name_len = sizeof(tmp_name) - 1; |
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61 | |
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62 | for (num_track = 2, i = 0; i < 100; i++) |
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63 | { |
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64 | if (PicoCDLoadProgressCB != NULL && i > 1) PicoCDLoadProgressCB(i); |
65 | |
66 | for (j = 0; j < sizeof(exts)/sizeof(char *); j++) |
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67 | { |
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68 | int ext_len; |
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69 | FILE *tmp_file; |
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70 | sprintf(tmp_ext, exts[j], i); |
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71 | ext_len = strlen(tmp_ext); |
72 | |
73 | memcpy(tmp_name, iso_name, iso_name_len + 1); |
74 | tmp_name[iso_name_len - 4] = 0; |
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75 | strcat(tmp_name, tmp_ext); |
76 | |
77 | tmp_file = fopen(tmp_name, "rb"); |
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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"); |
82 | } |
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83 | |
84 | if (tmp_file) |
85 | { |
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86 | int fs; |
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87 | index = num_track - 1; |
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88 | |
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89 | ret = fseek(tmp_file, 0, SEEK_END); |
90 | fs = ftell(tmp_file); // used to calculate lenght |
91 | fseek(tmp_file, 0, SEEK_SET); |
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92 | |
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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. |
96 | fclose(tmp_file); |
97 | tmp_file = (void *) strdup(tmp_name); |
98 | #endif |
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99 | Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs); |
100 | Tracks[index].KBtps >>= 3; |
101 | if (ret != 0 || Tracks[index].KBtps <= 0) |
102 | { |
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103 | cdprintf("Error track %i: rate %i", index, Tracks[index].KBtps); |
104 | #if !DONT_OPEN_MANY_FILES |
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105 | fclose(tmp_file); |
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106 | #else |
107 | free(tmp_file); |
108 | #endif |
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109 | continue; |
110 | } |
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111 | |
112 | Tracks[index].F = tmp_file; |
113 | |
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114 | LBA_to_MSF(Cur_LBA, &Tracks[index].MSF); |
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115 | |
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116 | // MP3 File |
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117 | Tracks[index].ftype = TYPE_MP3; |
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118 | fs *= 75; |
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119 | fs /= Tracks[index].KBtps * 1000; |
120 | Tracks[index].Length = fs; |
121 | Cur_LBA += Tracks[index].Length; |
122 | |
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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); |
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125 | |
126 | num_track++; |
127 | break; |
128 | } |
129 | } |
130 | } |
131 | |
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132 | Pico_mcd->TOC.Last_Track = num_track - 1; |
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133 | |
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134 | index = num_track - 1; |
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135 | |
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136 | LBA_to_MSF(Cur_LBA, &Tracks[index].MSF); |
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137 | |
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138 | cdprintf("End CD - %02d:%02d:%02d\n\n", Tracks[index].MSF.M, |
139 | Tracks[index].MSF.S, Tracks[index].MSF.F); |
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140 | |
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141 | if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(100); |
142 | |
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143 | return 0; |
144 | } |
145 | |
146 | |
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147 | PICO_INTERNAL void Unload_ISO(void) |
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148 | { |
149 | int i; |
150 | |
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151 | if (Pico_mcd == NULL) return; |
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152 | |
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153 | if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F); |
154 | |
155 | for(i = 1; i < 100; i++) |
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156 | { |
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157 | if (Pico_mcd->TOC.Tracks[i].F != NULL) |
158 | #if !DONT_OPEN_MANY_FILES |
159 | fclose(Pico_mcd->TOC.Tracks[i].F); |
160 | #else |
161 | free(Pico_mcd->TOC.Tracks[i].F); |
162 | #endif |
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163 | } |
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164 | memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks)); |
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165 | } |
166 | |
167 | |
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168 | PICO_INTERNAL int FILE_Read_One_LBA_CDC(void) |
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169 | { |
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170 | // static char cp_buf[2560]; |
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171 | |
172 | if (Pico_mcd->s68k_regs[0x36] & 1) // DATA |
173 | { |
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174 | if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1; |
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175 | |
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176 | // moved below.. |
177 | //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET); |
178 | //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F); |
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179 | |
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180 | cdprintf("Read file CDC 1 data sector :\n"); |
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181 | } |
182 | else // AUDIO |
183 | { |
184 | // int rate, channel; |
185 | |
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186 | // if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3) |
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187 | { |
188 | // TODO |
189 | // MP3_Update(cp_buf, &rate, &channel, 0); |
190 | // Write_CD_Audio((short *) cp_buf, rate, channel, 588); |
191 | } |
192 | |
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193 | cdprintf("Read file CDC 1 audio sector :\n"); |
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194 | } |
195 | |
196 | // Update CDC stuff |
197 | |
198 | CDC_Update_Header(); |
199 | |
200 | if (Pico_mcd->s68k_regs[0x36] & 1) // DATA track |
201 | { |
202 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
203 | { |
204 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer |
205 | { |
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206 | int where_read = 0; |
207 | |
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208 | // CAUTION : lookahead bit not implemented |
209 | |
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210 | if (Pico_mcd->scd.Cur_LBA < 0) |
211 | where_read = 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; |
215 | |
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216 | Pico_mcd->scd.Cur_LBA++; |
217 | |
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; |
220 | |
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221 | *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N; |
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222 | //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048); |
223 | |
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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); |
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227 | |
228 | #ifdef DEBUG_CD |
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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, |
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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]); |
239 | #endif |
240 | } |
241 | |
242 | } |
243 | } |
244 | else // music track |
245 | { |
246 | Pico_mcd->scd.Cur_LBA++; |
247 | |
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; |
250 | |
251 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
252 | { |
253 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer |
254 | { |
255 | // CAUTION : lookahead bit not implemented |
256 | |
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257 | //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352); |
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258 | } |
259 | } |
260 | } |
261 | |
262 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
263 | { |
264 | Pico_mcd->cdc.STAT.B.B0 = 0x80; |
265 | |
266 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x10) // determine form bit form sub header ? |
267 | { |
268 | Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08; |
269 | } |
270 | else |
271 | { |
272 | Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C; |
273 | } |
274 | |
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 |
277 | |
278 | if (Pico_mcd->cdc.IFCTRL & 0x20) |
279 | { |
280 | if (Pico_mcd->s68k_regs[0x33] & (1<<5)) |
281 | { |
282 | dprintf("cdc dec irq 5"); |
283 | SekInterruptS68k(5); |
284 | } |
285 | |
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286 | Pico_mcd->cdc.IFSTAT &= ~0x20; // DEC interrupt happen |
287 | Pico_mcd->cdc.Decode_Reg_Read = 0; // Reset read after DEC int |
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288 | } |
289 | } |
290 | |
291 | |
292 | return 0; |
293 | } |
294 | |
295 | |
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296 | PICO_INTERNAL int FILE_Play_CD_LBA(void) |
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297 | { |
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298 | int index = Pico_mcd->scd.Cur_Track - 1; |
299 | Pico_mcd->m.audio_track = index; |
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300 | |
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301 | cdprintf("Play track #%i", Pico_mcd->scd.Cur_Track); |
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302 | |
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303 | if (Pico_mcd->TOC.Tracks[index].F == NULL) |
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304 | { |
305 | return 1; |
306 | } |
307 | |
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308 | if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3) |
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309 | { |
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310 | int pos1024 = 0; |
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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; |
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313 | if (Track_LBA_Pos) |
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314 | pos1024 = Track_LBA_Pos * 1024 / Pico_mcd->TOC.Tracks[index].Length; |
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315 | |
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316 | mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024); |
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317 | } |
318 | else |
319 | { |
320 | return 3; |
321 | } |
322 | |
323 | return 0; |
324 | } |
325 | |