Mercurial > sdl-ios-xcode
annotate src/cdrom/win32/SDL_syscdrom.c @ 1361:19418e4422cb
New configure-based build system. Still work in progress, but much improved
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Thu, 16 Feb 2006 10:11:48 +0000 |
parents | c71e05b4dc2e |
children | c0a74f199ecf |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
0 | 4 |
5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
22 | |
23 /* Functions for system-level CD-ROM audio control */ | |
24 | |
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25 #include "SDL_windows.h" |
0 | 26 #include <mmsystem.h> |
27 | |
28 #include "SDL_cdrom.h" | |
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29 #include "../SDL_syscdrom.h" |
0 | 30 |
31 /* This really broken?? */ | |
32 #define BROKEN_MCI_PAUSE /* Pausing actually stops play -- Doh! */ | |
33 | |
34 /* The maximum number of CD-ROM drives we'll detect (Don't change!) */ | |
35 #define MAX_DRIVES 26 | |
36 | |
37 /* A list of available CD-ROM drives */ | |
38 static char *SDL_cdlist[MAX_DRIVES]; | |
39 static MCIDEVICEID SDL_mciID[MAX_DRIVES]; | |
40 #ifdef BROKEN_MCI_PAUSE | |
41 static int SDL_paused[MAX_DRIVES]; | |
42 #endif | |
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43 static int SDL_CD_end_position; |
0 | 44 |
45 /* The system-dependent CD control functions */ | |
46 static const char *SDL_SYS_CDName(int drive); | |
47 static int SDL_SYS_CDOpen(int drive); | |
48 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); | |
49 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); | |
50 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); | |
51 static int SDL_SYS_CDPause(SDL_CD *cdrom); | |
52 static int SDL_SYS_CDResume(SDL_CD *cdrom); | |
53 static int SDL_SYS_CDStop(SDL_CD *cdrom); | |
54 static int SDL_SYS_CDEject(SDL_CD *cdrom); | |
55 static void SDL_SYS_CDClose(SDL_CD *cdrom); | |
56 | |
57 | |
58 /* Add a CD-ROM drive to our list of valid drives */ | |
59 static void AddDrive(char *drive) | |
60 { | |
61 int i; | |
62 | |
63 if ( SDL_numcds < MAX_DRIVES ) { | |
64 /* Add this drive to our list */ | |
65 i = SDL_numcds; | |
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66 SDL_cdlist[i] = (char *)SDL_malloc(SDL_strlen(drive)+1); |
0 | 67 if ( SDL_cdlist[i] == NULL ) { |
68 SDL_OutOfMemory(); | |
69 return; | |
70 } | |
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71 SDL_strcpy(SDL_cdlist[i], drive); |
0 | 72 ++SDL_numcds; |
73 #ifdef CDROM_DEBUG | |
74 fprintf(stderr, "Added CD-ROM drive: %s\n", drive); | |
75 #endif | |
76 } | |
77 } | |
78 | |
79 int SDL_SYS_CDInit(void) | |
80 { | |
81 /* checklist: Drive 'A' - 'Z' */ | |
82 int i; | |
83 char drive[4]; | |
84 | |
85 /* Fill in our driver capabilities */ | |
86 SDL_CDcaps.Name = SDL_SYS_CDName; | |
87 SDL_CDcaps.Open = SDL_SYS_CDOpen; | |
88 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; | |
89 SDL_CDcaps.Status = SDL_SYS_CDStatus; | |
90 SDL_CDcaps.Play = SDL_SYS_CDPlay; | |
91 SDL_CDcaps.Pause = SDL_SYS_CDPause; | |
92 SDL_CDcaps.Resume = SDL_SYS_CDResume; | |
93 SDL_CDcaps.Stop = SDL_SYS_CDStop; | |
94 SDL_CDcaps.Eject = SDL_SYS_CDEject; | |
95 SDL_CDcaps.Close = SDL_SYS_CDClose; | |
96 | |
97 /* Scan the system for CD-ROM drives */ | |
98 for ( i='A'; i<='Z'; ++i ) { | |
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99 SDL_snprintf(drive, SDL_arraysize(drive), "%c:\\", i); |
0 | 100 if ( GetDriveType(drive) == DRIVE_CDROM ) { |
101 AddDrive(drive); | |
102 } | |
103 } | |
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104 SDL_memset(SDL_mciID, 0, sizeof(SDL_mciID)); |
0 | 105 return(0); |
106 } | |
107 | |
108 /* General ioctl() CD-ROM command function */ | |
109 static int SDL_SYS_CDioctl(int id, UINT msg, DWORD flags, void *arg) | |
110 { | |
111 MCIERROR mci_error; | |
112 | |
113 mci_error = mciSendCommand(SDL_mciID[id], msg, flags, (DWORD)arg); | |
114 if ( mci_error ) { | |
115 char error[256]; | |
116 | |
117 mciGetErrorString(mci_error, error, 256); | |
118 SDL_SetError("mciSendCommand() error: %s", error); | |
119 } | |
120 return(!mci_error ? 0 : -1); | |
121 } | |
122 | |
123 static const char *SDL_SYS_CDName(int drive) | |
124 { | |
125 return(SDL_cdlist[drive]); | |
126 } | |
127 | |
128 static int SDL_SYS_CDOpen(int drive) | |
129 { | |
130 MCI_OPEN_PARMS mci_open; | |
131 MCI_SET_PARMS mci_set; | |
132 char device[3]; | |
133 DWORD flags; | |
134 | |
135 /* Open the requested device */ | |
136 mci_open.lpstrDeviceType = (LPCSTR) MCI_DEVTYPE_CD_AUDIO; | |
137 device[0] = *SDL_cdlist[drive]; | |
138 device[1] = ':'; | |
139 device[2] = '\0'; | |
140 mci_open.lpstrElementName = device; | |
141 flags = | |
142 (MCI_OPEN_TYPE|MCI_OPEN_SHAREABLE|MCI_OPEN_TYPE_ID|MCI_OPEN_ELEMENT); | |
143 if ( SDL_SYS_CDioctl(0, MCI_OPEN, flags, &mci_open) < 0 ) { | |
144 flags &= ~MCI_OPEN_SHAREABLE; | |
145 if ( SDL_SYS_CDioctl(0, MCI_OPEN, flags, &mci_open) < 0 ) { | |
146 return(-1); | |
147 } | |
148 } | |
149 SDL_mciID[drive] = mci_open.wDeviceID; | |
150 | |
151 /* Set the minute-second-frame time format */ | |
152 mci_set.dwTimeFormat = MCI_FORMAT_MSF; | |
153 SDL_SYS_CDioctl(drive, MCI_SET, MCI_SET_TIME_FORMAT, &mci_set); | |
154 | |
155 #ifdef BROKEN_MCI_PAUSE | |
156 SDL_paused[drive] = 0; | |
157 #endif | |
158 return(drive); | |
159 } | |
160 | |
161 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) | |
162 { | |
163 MCI_STATUS_PARMS mci_status; | |
164 int i, okay; | |
165 DWORD flags; | |
166 | |
167 okay = 0; | |
168 mci_status.dwItem = MCI_STATUS_NUMBER_OF_TRACKS; | |
169 flags = MCI_STATUS_ITEM | MCI_WAIT; | |
170 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { | |
171 cdrom->numtracks = mci_status.dwReturn; | |
172 if ( cdrom->numtracks > SDL_MAX_TRACKS ) { | |
173 cdrom->numtracks = SDL_MAX_TRACKS; | |
174 } | |
175 /* Read all the track TOC entries */ | |
176 flags = MCI_STATUS_ITEM | MCI_TRACK | MCI_WAIT; | |
177 for ( i=0; i<cdrom->numtracks; ++i ) { | |
178 cdrom->track[i].id = i+1; | |
179 mci_status.dwTrack = cdrom->track[i].id; | |
180 #ifdef MCI_CDA_STATUS_TYPE_TRACK | |
181 mci_status.dwItem = MCI_CDA_STATUS_TYPE_TRACK; | |
182 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, | |
183 &mci_status) < 0 ) { | |
184 break; | |
185 } | |
186 if ( mci_status.dwReturn == MCI_CDA_TRACK_AUDIO ) { | |
187 cdrom->track[i].type = SDL_AUDIO_TRACK; | |
188 } else { | |
189 cdrom->track[i].type = SDL_DATA_TRACK; | |
190 } | |
191 #else | |
192 cdrom->track[i].type = SDL_AUDIO_TRACK; | |
193 #endif | |
194 mci_status.dwItem = MCI_STATUS_POSITION; | |
195 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, | |
196 &mci_status) < 0 ) { | |
197 break; | |
198 } | |
199 cdrom->track[i].offset = MSF_TO_FRAMES( | |
200 MCI_MSF_MINUTE(mci_status.dwReturn), | |
201 MCI_MSF_SECOND(mci_status.dwReturn), | |
202 MCI_MSF_FRAME(mci_status.dwReturn)); | |
203 cdrom->track[i].length = 0; | |
204 if ( i > 0 ) { | |
205 cdrom->track[i-1].length = | |
206 cdrom->track[i].offset- | |
207 cdrom->track[i-1].offset; | |
208 } | |
209 } | |
210 if ( i == cdrom->numtracks ) { | |
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211 mci_status.dwTrack = cdrom->track[i - 1].id; |
0 | 212 mci_status.dwItem = MCI_STATUS_LENGTH; |
213 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, | |
214 &mci_status) == 0 ) { | |
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215 cdrom->track[i - 1].length = MSF_TO_FRAMES( |
0 | 216 MCI_MSF_MINUTE(mci_status.dwReturn), |
217 MCI_MSF_SECOND(mci_status.dwReturn), | |
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218 MCI_MSF_FRAME(mci_status.dwReturn)) + 1; /* +1 to fix */ |
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219 /* MCI last track length bug */ |
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220 /* compute lead-out offset */ |
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221 cdrom->track[i].offset = cdrom->track[i - 1].offset + |
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222 cdrom->track[i - 1].length; |
0 | 223 cdrom->track[i].length = 0; |
224 okay = 1; | |
225 } | |
226 } | |
227 } | |
228 return(okay ? 0 : -1); | |
229 } | |
230 | |
231 /* Get CD-ROM status */ | |
232 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) | |
233 { | |
234 CDstatus status; | |
235 MCI_STATUS_PARMS mci_status; | |
236 DWORD flags; | |
237 | |
238 flags = MCI_STATUS_ITEM | MCI_WAIT; | |
239 mci_status.dwItem = MCI_STATUS_MODE; | |
240 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) < 0 ) { | |
241 status = CD_ERROR; | |
242 } else { | |
243 switch (mci_status.dwReturn) { | |
244 case MCI_MODE_NOT_READY: | |
245 case MCI_MODE_OPEN: | |
246 status = CD_TRAYEMPTY; | |
247 break; | |
248 case MCI_MODE_STOP: | |
249 #ifdef BROKEN_MCI_PAUSE | |
250 if ( SDL_paused[cdrom->id] ) { | |
251 status = CD_PAUSED; | |
252 } else { | |
253 status = CD_STOPPED; | |
254 } | |
255 #else | |
256 status = CD_STOPPED; | |
257 #endif /* BROKEN_MCI_PAUSE */ | |
258 break; | |
259 case MCI_MODE_PLAY: | |
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260 #ifdef BROKEN_MCI_PAUSE |
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261 if ( SDL_paused[cdrom->id] ) { |
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262 status = CD_PAUSED; |
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263 } else { |
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264 status = CD_PLAYING; |
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265 } |
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266 #else |
0 | 267 status = CD_PLAYING; |
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268 #endif /* BROKEN_MCI_PAUSE */ |
0 | 269 break; |
270 case MCI_MODE_PAUSE: | |
271 status = CD_PAUSED; | |
272 break; | |
273 default: | |
274 status = CD_ERROR; | |
275 break; | |
276 } | |
277 } | |
278 if ( position ) { | |
279 if ( status == CD_PLAYING || (status == CD_PAUSED) ) { | |
280 mci_status.dwItem = MCI_STATUS_POSITION; | |
281 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, | |
282 &mci_status) == 0 ) { | |
283 *position = MSF_TO_FRAMES( | |
284 MCI_MSF_MINUTE(mci_status.dwReturn), | |
285 MCI_MSF_SECOND(mci_status.dwReturn), | |
286 MCI_MSF_FRAME(mci_status.dwReturn)); | |
287 } else { | |
288 *position = 0; | |
289 } | |
290 } else { | |
291 *position = 0; | |
292 } | |
293 } | |
294 return(status); | |
295 } | |
296 | |
297 /* Start play */ | |
298 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | |
299 { | |
300 MCI_PLAY_PARMS mci_play; | |
301 int m, s, f; | |
302 DWORD flags; | |
303 | |
304 flags = MCI_FROM | MCI_TO | MCI_NOTIFY; | |
305 mci_play.dwCallback = 0; | |
306 FRAMES_TO_MSF(start, &m, &s, &f); | |
307 mci_play.dwFrom = MCI_MAKE_MSF(m, s, f); | |
308 FRAMES_TO_MSF(start+length, &m, &s, &f); | |
309 mci_play.dwTo = MCI_MAKE_MSF(m, s, f); | |
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310 SDL_CD_end_position = mci_play.dwTo; |
0 | 311 return(SDL_SYS_CDioctl(cdrom->id, MCI_PLAY, flags, &mci_play)); |
312 } | |
313 | |
314 /* Pause play */ | |
315 static int SDL_SYS_CDPause(SDL_CD *cdrom) | |
316 { | |
317 #ifdef BROKEN_MCI_PAUSE | |
318 SDL_paused[cdrom->id] = 1; | |
319 #endif | |
320 return(SDL_SYS_CDioctl(cdrom->id, MCI_PAUSE, MCI_WAIT, NULL)); | |
321 } | |
322 | |
323 /* Resume play */ | |
324 static int SDL_SYS_CDResume(SDL_CD *cdrom) | |
325 { | |
326 #ifdef BROKEN_MCI_PAUSE | |
327 MCI_STATUS_PARMS mci_status; | |
328 int okay; | |
329 int flags; | |
330 | |
331 okay = 0; | |
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332 /* Play from the current play position to the end position set earlier */ |
0 | 333 flags = MCI_STATUS_ITEM | MCI_WAIT; |
334 mci_status.dwItem = MCI_STATUS_POSITION; | |
335 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { | |
336 MCI_PLAY_PARMS mci_play; | |
337 | |
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338 flags = MCI_FROM | MCI_TO | MCI_NOTIFY; |
0 | 339 mci_play.dwCallback = 0; |
340 mci_play.dwFrom = mci_status.dwReturn; | |
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341 mci_play.dwTo = SDL_CD_end_position; |
0 | 342 if (SDL_SYS_CDioctl(cdrom->id,MCI_PLAY,flags,&mci_play) == 0) { |
343 okay = 1; | |
344 SDL_paused[cdrom->id] = 0; | |
345 } | |
346 } | |
347 return(okay ? 0 : -1); | |
348 #else | |
349 return(SDL_SYS_CDioctl(cdrom->id, MCI_RESUME, MCI_WAIT, NULL)); | |
350 #endif /* BROKEN_MCI_PAUSE */ | |
351 } | |
352 | |
353 /* Stop play */ | |
354 static int SDL_SYS_CDStop(SDL_CD *cdrom) | |
355 { | |
356 return(SDL_SYS_CDioctl(cdrom->id, MCI_STOP, MCI_WAIT, NULL)); | |
357 } | |
358 | |
359 /* Eject the CD-ROM */ | |
360 static int SDL_SYS_CDEject(SDL_CD *cdrom) | |
361 { | |
362 return(SDL_SYS_CDioctl(cdrom->id, MCI_SET, MCI_SET_DOOR_OPEN, NULL)); | |
363 } | |
364 | |
365 /* Close the CD-ROM handle */ | |
366 static void SDL_SYS_CDClose(SDL_CD *cdrom) | |
367 { | |
368 SDL_SYS_CDioctl(cdrom->id, MCI_CLOSE, MCI_WAIT, NULL); | |
369 } | |
370 | |
371 void SDL_SYS_CDQuit(void) | |
372 { | |
373 int i; | |
374 | |
375 if ( SDL_numcds > 0 ) { | |
376 for ( i=0; i<SDL_numcds; ++i ) { | |
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377 SDL_free(SDL_cdlist[i]); |
0 | 378 } |
379 SDL_numcds = 0; | |
380 } | |
381 } |