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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(x...) |
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14 | //#define cdprintf(f,...) printf(f "\n",##__VA_ARGS__) // tmp |
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15 | #define DEBUG_CD |
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16 | |
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17 | PICO_INTERNAL int Load_ISO(const char *iso_name, int is_bin) |
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18 | { |
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19 | int i, j, num_track, Cur_LBA, index, ret, iso_name_len; |
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20 | _scd_track *Tracks = Pico_mcd->TOC.Tracks; |
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21 | char tmp_name[1024], tmp_ext[10]; |
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22 | pm_file *pmf; |
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23 | static char *exts[] = { |
24 | "%02d.mp3", " %02d.mp3", "-%02d.mp3", "_%02d.mp3", " - %02d.mp3", |
25 | "%d.mp3", " %d.mp3", "-%d.mp3", "_%d.mp3", " - %d.mp3", |
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26 | #if CASE_SENSITIVE_FS |
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27 | "%02d.MP3", " %02d.MP3", "-%02d.MP3", "_%02d.MP3", " - %02d.MP3", |
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28 | #endif |
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29 | }; |
30 | |
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31 | if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(1); |
32 | |
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33 | Unload_ISO(); |
34 | |
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35 | Tracks[0].ftype = is_bin ? TYPE_BIN : TYPE_ISO; |
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36 | |
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37 | Tracks[0].F = pmf = pm_open(iso_name); |
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38 | if (Tracks[0].F == NULL) |
39 | { |
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40 | Tracks[0].ftype = 0; |
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41 | Tracks[0].Length = 0; |
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42 | return -1; |
43 | } |
44 | |
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45 | if (Tracks[0].ftype == TYPE_ISO) |
46 | Tracks[0].Length = pmf->size >>= 11; // size in sectors |
47 | else Tracks[0].Length = pmf->size /= 2352; |
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48 | |
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49 | Tracks[0].MSF.M = 0; // minutes |
50 | Tracks[0].MSF.S = 2; // seconds |
51 | Tracks[0].MSF.F = 0; // frames |
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52 | |
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53 | cdprintf("Track 0 - %02d:%02d:%02d DATA", Tracks[0].MSF.M, Tracks[0].MSF.S, Tracks[0].MSF.F); |
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54 | |
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55 | Cur_LBA = Tracks[0].Length; // Size in sectors |
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56 | |
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57 | iso_name_len = strlen(iso_name); |
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58 | if (iso_name_len >= sizeof(tmp_name)) |
59 | iso_name_len = sizeof(tmp_name) - 1; |
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60 | |
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61 | for (num_track = 2, i = 0; i < 100; i++) |
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62 | { |
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63 | if (PicoCDLoadProgressCB != NULL && i > 1) PicoCDLoadProgressCB(i); |
64 | |
65 | for (j = 0; j < sizeof(exts)/sizeof(char *); j++) |
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66 | { |
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67 | int ext_len; |
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68 | FILE *tmp_file; |
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69 | sprintf(tmp_ext, exts[j], i); |
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70 | ext_len = strlen(tmp_ext); |
71 | |
72 | memcpy(tmp_name, iso_name, iso_name_len + 1); |
73 | tmp_name[iso_name_len - 4] = 0; |
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74 | strcat(tmp_name, tmp_ext); |
75 | |
76 | tmp_file = fopen(tmp_name, "rb"); |
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77 | if (!tmp_file && i > 1 && iso_name_len > ext_len) { |
78 | tmp_name[iso_name_len - ext_len] = 0; |
79 | strcat(tmp_name, tmp_ext); |
80 | tmp_file = fopen(tmp_name, "rb"); |
81 | } |
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82 | |
83 | if (tmp_file) |
84 | { |
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85 | int fs; |
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86 | index = num_track - 1; |
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87 | |
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88 | ret = fseek(tmp_file, 0, SEEK_END); |
89 | fs = ftell(tmp_file); // used to calculate lenght |
90 | fseek(tmp_file, 0, SEEK_SET); |
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91 | |
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92 | #if DONT_OPEN_MANY_FILES |
93 | // some systems (like PSP) can't have many open files at a time, |
94 | // so we work with their names instead. |
95 | fclose(tmp_file); |
96 | tmp_file = (void *) strdup(tmp_name); |
97 | #endif |
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98 | Tracks[index].KBtps = (short) mp3_get_bitrate(tmp_file, fs); |
99 | Tracks[index].KBtps >>= 3; |
100 | if (ret != 0 || Tracks[index].KBtps <= 0) |
101 | { |
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102 | cdprintf("Error track %i: rate %i", index, Tracks[index].KBtps); |
103 | #if !DONT_OPEN_MANY_FILES |
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104 | fclose(tmp_file); |
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105 | #else |
106 | free(tmp_file); |
107 | #endif |
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108 | continue; |
109 | } |
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110 | |
111 | Tracks[index].F = tmp_file; |
112 | |
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113 | LBA_to_MSF(Cur_LBA, &Tracks[index].MSF); |
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114 | |
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115 | // MP3 File |
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116 | Tracks[index].ftype = TYPE_MP3; |
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117 | fs *= 75; |
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118 | fs /= Tracks[index].KBtps * 1000; |
119 | Tracks[index].Length = fs; |
120 | Cur_LBA += Tracks[index].Length; |
121 | |
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122 | cdprintf("Track %i: %s - %02d:%02d:%02d len=%i AUDIO", index, tmp_name, Tracks[index].MSF.M, |
123 | Tracks[index].MSF.S, Tracks[index].MSF.F, fs); |
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124 | |
125 | num_track++; |
126 | break; |
127 | } |
128 | } |
129 | } |
130 | |
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131 | Pico_mcd->TOC.Last_Track = num_track - 1; |
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132 | |
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133 | index = num_track - 1; |
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134 | |
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135 | LBA_to_MSF(Cur_LBA, &Tracks[index].MSF); |
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136 | |
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137 | cdprintf("End CD - %02d:%02d:%02d\n\n", Tracks[index].MSF.M, |
138 | Tracks[index].MSF.S, Tracks[index].MSF.F); |
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139 | |
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140 | if (PicoCDLoadProgressCB != NULL) PicoCDLoadProgressCB(100); |
141 | |
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142 | return 0; |
143 | } |
144 | |
145 | |
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146 | PICO_INTERNAL void Unload_ISO(void) |
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147 | { |
148 | int i; |
149 | |
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150 | if (Pico_mcd == NULL) return; |
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151 | |
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152 | if (Pico_mcd->TOC.Tracks[0].F) pm_close(Pico_mcd->TOC.Tracks[0].F); |
153 | |
154 | for(i = 1; i < 100; i++) |
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155 | { |
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156 | if (Pico_mcd->TOC.Tracks[i].F != NULL) |
157 | #if !DONT_OPEN_MANY_FILES |
158 | fclose(Pico_mcd->TOC.Tracks[i].F); |
159 | #else |
160 | free(Pico_mcd->TOC.Tracks[i].F); |
161 | #endif |
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162 | } |
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163 | memset(Pico_mcd->TOC.Tracks, 0, sizeof(Pico_mcd->TOC.Tracks)); |
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164 | } |
165 | |
166 | |
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167 | PICO_INTERNAL int FILE_Read_One_LBA_CDC(void) |
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168 | { |
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169 | // static char cp_buf[2560]; |
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170 | |
171 | if (Pico_mcd->s68k_regs[0x36] & 1) // DATA |
172 | { |
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173 | if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1; |
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174 | |
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175 | // moved below.. |
176 | //fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET); |
177 | //fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F); |
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178 | |
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179 | cdprintf("Read file CDC 1 data sector :\n"); |
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180 | } |
181 | else // AUDIO |
182 | { |
183 | // int rate, channel; |
184 | |
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185 | // if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3) |
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186 | { |
187 | // TODO |
188 | // MP3_Update(cp_buf, &rate, &channel, 0); |
189 | // Write_CD_Audio((short *) cp_buf, rate, channel, 588); |
190 | } |
191 | |
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192 | cdprintf("Read file CDC 1 audio sector :\n"); |
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193 | } |
194 | |
195 | // Update CDC stuff |
196 | |
197 | CDC_Update_Header(); |
198 | |
199 | if (Pico_mcd->s68k_regs[0x36] & 1) // DATA track |
200 | { |
201 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
202 | { |
203 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer |
204 | { |
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205 | int where_read = 0; |
206 | |
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207 | // CAUTION : lookahead bit not implemented |
208 | |
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209 | if (Pico_mcd->scd.Cur_LBA < 0) |
210 | where_read = 0; |
211 | else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length) |
212 | where_read = Pico_mcd->TOC.Tracks[0].Length - 1; |
213 | else where_read = Pico_mcd->scd.Cur_LBA; |
214 | |
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215 | Pico_mcd->scd.Cur_LBA++; |
216 | |
217 | Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA |
218 | Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF; |
219 | |
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220 | *(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N; |
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221 | //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048); |
222 | |
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223 | //pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET); |
224 | //pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F); |
225 | PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read); |
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226 | |
227 | #ifdef DEBUG_CD |
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228 | cdprintf("Read -> WA = %d Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF); |
229 | cdprintf("Header 1 = %.2X %.2X %.2X %.2X", Pico_mcd->cdc.HEAD.B.B0, |
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230 | Pico_mcd->cdc.HEAD.B.B1, Pico_mcd->cdc.HEAD.B.B2, Pico_mcd->cdc.HEAD.B.B3); |
231 | cdprintf("Header 2 = %.2X %.2X %.2X %.2X --- %.2X %.2X\n\n", |
232 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 0) & 0x3FFF], |
233 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 1) & 0x3FFF], |
234 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 2) & 0x3FFF], |
235 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 3) & 0x3FFF], |
236 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 4) & 0x3FFF], |
237 | Pico_mcd->cdc.Buffer[(Pico_mcd->cdc.PT.N + 5) & 0x3FFF]); |
238 | #endif |
239 | } |
240 | |
241 | } |
242 | } |
243 | else // music track |
244 | { |
245 | Pico_mcd->scd.Cur_LBA++; |
246 | |
247 | Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA |
248 | Pico_mcd->cdc.PT.N = (Pico_mcd->cdc.PT.N + 2352) & 0x7FFF; |
249 | |
250 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
251 | { |
252 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer |
253 | { |
254 | // CAUTION : lookahead bit not implemented |
255 | |
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256 | //memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N], cp_buf, 2352); |
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257 | } |
258 | } |
259 | } |
260 | |
261 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x80) // DECEN = decoding enable |
262 | { |
263 | Pico_mcd->cdc.STAT.B.B0 = 0x80; |
264 | |
265 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x10) // determine form bit form sub header ? |
266 | { |
267 | Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x08; |
268 | } |
269 | else |
270 | { |
271 | Pico_mcd->cdc.STAT.B.B2 = Pico_mcd->cdc.CTRL.B.B1 & 0x0C; |
272 | } |
273 | |
274 | if (Pico_mcd->cdc.CTRL.B.B0 & 0x02) Pico_mcd->cdc.STAT.B.B3 = 0x20; // ECC done |
275 | else Pico_mcd->cdc.STAT.B.B3 = 0x00; // ECC not done |
276 | |
277 | if (Pico_mcd->cdc.IFCTRL & 0x20) |
278 | { |
279 | if (Pico_mcd->s68k_regs[0x33] & (1<<5)) |
280 | { |
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281 | elprintf(EL_INTS, "cdc dec irq 5"); |
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282 | SekInterruptS68k(5); |
283 | } |
284 | |
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285 | Pico_mcd->cdc.IFSTAT &= ~0x20; // DEC interrupt happen |
286 | Pico_mcd->cdc.Decode_Reg_Read = 0; // Reset read after DEC int |
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287 | } |
288 | } |
289 | |
290 | |
291 | return 0; |
292 | } |
293 | |
294 | |
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295 | PICO_INTERNAL int FILE_Play_CD_LBA(void) |
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296 | { |
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297 | int index = Pico_mcd->scd.Cur_Track - 1; |
298 | Pico_mcd->m.audio_track = index; |
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299 | |
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300 | cdprintf("Play track #%i", Pico_mcd->scd.Cur_Track); |
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301 | |
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302 | if (Pico_mcd->TOC.Tracks[index].F == NULL) |
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303 | { |
304 | return 1; |
305 | } |
306 | |
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307 | if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3) |
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308 | { |
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309 | int pos1024 = 0; |
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310 | int Track_LBA_Pos = Pico_mcd->scd.Cur_LBA - Track_to_LBA(Pico_mcd->scd.Cur_Track); |
311 | if (Track_LBA_Pos < 0) Track_LBA_Pos = 0; |
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312 | if (Track_LBA_Pos) |
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313 | pos1024 = Track_LBA_Pos * 1024 / Pico_mcd->TOC.Tracks[index].Length; |
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314 | |
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315 | mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024); |
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316 | } |
317 | else |
318 | { |
319 | return 3; |
320 | } |
321 | |
322 | return 0; |
323 | } |
324 | |