Mercurial > hg > xemacs-beta

comparison src/sunplay.c @ 428:3ecd8885ac67 r21-2-22

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Import from CVS: tag r21-2-22
author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
parents
children abe6d1db359e
comparison
equal deleted inserted replaced
427:0a0253eac470 428:3ecd8885ac67
1 /* play.c - play a sound file on the speaker
2 **
3 ** Copyright (C) 1989 by Jef Poskanzer.
4 **
5 ** Modified 24-May-91 by Jamie Zawinski (for Lucid Emacs).
6 ** Modified 17-Dec-92 by Jamie Zawinski (largely rewritten for SunOS 4.1.3).
7 **
8 ** Permission to use, copy, modify, and distribute this software and its
9 ** documentation for any purpose and without fee is hereby granted, provided
10 ** that the above copyright notice appear in all copies and that both that
11 ** copyright notice and this permission notice appear in supporting
12 ** documentation. This software is provided "as is" without express or
13 ** implied warranty.
14 */
15
16 /* Synched up with: Not in FSF. */
17
18 #ifdef HAVE_CONFIG_H
19 #include <config.h>
20 #endif
21
22 #if __STDC__ || defined(STDC_HEADERS)
23 #include <stdlib.h>
24 #include <unistd.h>
25 #include <fcntl.h> /* for open() */
26 #endif
27
28 #include <stdio.h>
29 #include <string.h>
30 #ifndef emacs
31 #include <sys/signal.h>
32 #endif
33 #include <sys/fcntl.h>
34 #include <sys/file.h>
35
36 /* libaudio.h includes a header which defines CONST. We temporarily
37 undefine it in order to eliminate a compiler warning. Yes, this is
38 a gross hack. */
39 #undef CONST
40 #include <multimedia/libaudio.h>
41 #include <multimedia/audio_device.h>
42 #undef CONST
43 #define CONST const
44
45 #ifdef emacs
46 # include <config.h>
47 # include "lisp.h"
48 # include "sysdep.h"
49 # include <errno.h>
50 #include "syssignal.h"
51 # define perror(string) \
52 message("audio: %s, %s ", string, strerror (errno))
53 # define warn(str) message ("audio: %s ", GETTEXT (str))
54 #else /* !emacs */
55 # define warn(str) fprintf (stderr, "%s\n", (str))
56 #endif /* emacs */
57
58 static SIGTYPE (*sighup_handler) (int sig);
59 static SIGTYPE (*sigint_handler) (int sig);
60 static SIGTYPE sighandler (int sig);
61
62 static int audio_fd;
63
64 #define audio_open() open ("/dev/audio", (O_WRONLY | O_NONBLOCK), 0)
65
66 static int reset_volume_p, reset_device_p;
67 static double old_volume;
68 static Audio_hdr dev_hdr;
69
70 void play_sound_file (char *name, int volume);
71 void play_sound_data (unsigned char *data, int length, int volume);
72
73 static int
74 init_device (int volume, unsigned char *data, int fd,
75 unsigned int *header_length)
76 {
77 #ifdef SUNOS4_0_3
78 if (header_length) *header_length = 0;
79 return 0;
80 #else
81 Audio_hdr file_hdr;
82
83 reset_volume_p = 0;
84 reset_device_p = 0;
85
86 if (data && fd) abort (); /* one or the other */
87
88 if (AUDIO_SUCCESS != audio_get_play_config (audio_fd, &dev_hdr))
89 {
90 perror ("Not a valid audio device");
91 return 1;
92 }
93
94 if (AUDIO_SUCCESS != (data
95 ? audio_decode_filehdr (data, &file_hdr, header_length)
96 : audio_read_filehdr (fd, &file_hdr, 0, 0)))
97 {
98 if (data)
99 perror ("invalid audio data");
100 else
101 perror ("invalid audio file");
102 return 1;
103 }
104
105 audio_flush_play (audio_fd);
106
107 if (0 != audio_cmp_hdr (&dev_hdr, &file_hdr))
108 {
109 Audio_hdr new_hdr;
110 new_hdr = file_hdr;
111 reset_device_p = 1;
112 if (AUDIO_SUCCESS != audio_set_play_config (audio_fd, &new_hdr))
113 {
114 char buf1 [100], buf2 [100], buf3 [250];
115 audio_enc_to_str (&file_hdr, buf1);
116 audio_enc_to_str (&new_hdr, buf2);
117 sprintf (buf3, "wanted %s, got %s", buf1, buf2);
118 warn (buf3);
119 return 1;
120 }
121 }
122
123 if (volume < 0 || volume > 100)
124 {
125 char buf [255];
126 sprintf (buf, "volume must be between 0 and 100 (not %d)", volume);
127 warn (buf);
128 return 1;
129 }
130 {
131 /* set the volume; scale it to 0.0 - 1.0 */
132 double V = (volume / 100.0);
133 audio_get_play_gain (audio_fd, &old_volume);
134 reset_volume_p = 1;
135 audio_set_play_gain (audio_fd, &V);
136 }
137
138 return 0;
139 #endif
140 }
141
142
143 static void
144 reset_device (int wait_p)
145 {
146 if (wait_p)
147 audio_drain (audio_fd, 1);
148 else
149 audio_flush_play (audio_fd);
150 if (reset_device_p)
151 audio_set_play_config (audio_fd, &dev_hdr);
152 if (reset_volume_p)
153 audio_set_play_gain (audio_fd, &old_volume);
154 }
155
156
157 void
158 play_sound_file (char *sound_file, int volume)
159 {
160 int rrtn, wrtn;
161 unsigned char buf [255];
162 int file_fd;
163
164 audio_fd = audio_open ();
165
166 if (audio_fd < 0)
167 {
168 perror ("open /dev/audio");
169 return;
170 }
171
172 /* where to find the proto for signal()... */
173 sighup_handler = (SIGTYPE (*) (int)) signal (SIGHUP, sighandler);
174 sigint_handler = (SIGTYPE (*) (int)) signal (SIGINT, sighandler);
175
176 file_fd = open (sound_file, O_RDONLY, 0);
177 if (file_fd < 0)
178 {
179 perror (sound_file);
180 goto END_OF_PLAY;
181 }
182
183 if (init_device (volume, (unsigned char *) 0, file_fd, (unsigned int *) 0))
184 goto END_OF_PLAY;
185
186 while (1)
187 {
188 rrtn = read (file_fd, (char *) buf, sizeof (buf));
189 if (rrtn < 0)
190 {
191 perror ("read");
192 goto END_OF_PLAY;
193 }
194 if (rrtn == 0)
195 break;
196
197 while (1)
198 {
199 wrtn = write (audio_fd, (char *) buf, rrtn);
200 if (wrtn < 0)
201 {
202 perror ("write");
203 goto END_OF_PLAY;
204 }
205 if (wrtn != 0)
206 break;
207
208 if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
209 goto END_OF_PLAY;
210 }
211 if (wrtn != rrtn)
212 {
213 char warn_buf [255];
214 sprintf (warn_buf, "play: rrtn = %d, wrtn = %d", rrtn, wrtn);
215 warn (warn_buf);
216 goto END_OF_PLAY;
217 }
218 }
219
220 END_OF_PLAY:
221
222 if (file_fd > 0)
223 close (file_fd);
224
225 if (audio_fd > 0)
226 {
227 reset_device (1);
228 close (audio_fd);
229 }
230
231 signal (SIGHUP, sighup_handler);
232 signal (SIGINT, sigint_handler);
233 }
234
235
236 void
237 play_sound_data (unsigned char *data, int length, int volume)
238 {
239 int wrtn, start = 0;
240 unsigned int ilen;
241
242 audio_fd = -1;
243
244 if (length == 0) return;
245
246 /* this is just to get a better error message */
247 if (strncmp (".snd\0", (char *) data, 4))
248 {
249 warn ("Not valid audio data (bad magic number)");
250 goto END_OF_PLAY;
251 }
252 if (length <= sizeof (Audio_hdr))
253 {
254 warn ("Not valid audio data (too short)");
255 goto END_OF_PLAY;
256 }
257
258 audio_fd = audio_open ();
259 if (audio_fd < 0)
260 {
261 perror ("open /dev/audio");
262 return;
263 }
264
265 /* where to find the proto for signal()... */
266 sighup_handler = (SIGTYPE (*) (int)) signal (SIGHUP, sighandler);
267 sigint_handler = (SIGTYPE (*) (int)) signal (SIGINT, sighandler);
268
269 if (init_device (volume, data, 0, &ilen))
270 goto END_OF_PLAY;
271
272 data += (ilen<<2);
273 length -= (ilen<<2);
274 if (length <= 1)
275 goto END_OF_PLAY;
276
277 while (1)
278 {
279 wrtn = write (audio_fd, (char *) (data+start), length-start);
280 if (wrtn < 0)
281 {
282 perror ("write");
283 goto END_OF_PLAY;
284 }
285 if (wrtn != 0)
286 {
287 start += wrtn;
288 break;
289 }
290 if (AUDIO_ERR_INTERRUPTED == audio_drain (audio_fd, 1))
291 goto END_OF_PLAY;
292 }
293 if (wrtn != length)
294 {
295 char buf [255];
296 sprintf (buf, "play: rrtn = %d, wrtn = %d", length, wrtn);
297 warn (buf);
298 goto END_OF_PLAY;
299 }
300
301 END_OF_PLAY:
302
303 if (audio_fd > 0)
304 {
305 reset_device (1);
306 close (audio_fd);
307 }
308
309 signal (SIGHUP, sighup_handler);
310 signal (SIGINT, sigint_handler);
311 }
312
313 /* #### sigcontext doesn't exist in Solaris. This should be updated
314 to be correct for Solaris. */
315 static void
316 sighandler (int sig)
317 {
318 if (audio_fd > 0)
319 {
320 reset_device (0);
321 close (audio_fd);
322 }
323 if (sig == SIGHUP && sighup_handler)
324 sighup_handler (sig);
325 else if (sig == SIGINT && sigint_handler)
326 sigint_handler (sig);
327 else
328 exit (1);
329 }