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comparison src/alsaplay.c @ 3335:f63530aa6c68

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[xemacs-hg @ 2006-04-10 15:16:45 by james] Support pre-1.0.10 versions of the ALSA library. See xemacs-patches message <m3y7ydsbzl.fsf@jerrypc.cs.usu.edu>.
author james
date Mon, 10 Apr 2006 15:16:47 +0000
parents 34cfe24248f6
children 316f3f347b4f
comparison
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3334:25b44ff1faa1 3335:f63530aa6c68
39 #include <alsa/hwdep.h> 39 #include <alsa/hwdep.h>
40 #include <alsa/rawmidi.h> 40 #include <alsa/rawmidi.h>
41 #include <alsa/control.h> 41 #include <alsa/control.h>
42 #include <alsa/mixer.h> 42 #include <alsa/mixer.h>
43 43
44 #define ALSA_VERSION(major,minor,sub) (((major)<<16) | ((minor)<<8)| (sub))
45
44 struct mixer_state 46 struct mixer_state
45 { 47 {
46 snd_mixer_t *mixer; 48 snd_mixer_t *mixer;
47 snd_mixer_elem_t *vol_ctl; 49 snd_mixer_elem_t *vol_ctl;
48 50
49 /* Which channels need the old volume restored */ 51 /* Which channels need the old volume restored */
50 int reset_front_left; 52 int reset_front_left;
51 int reset_front_center; 53 int reset_front_center;
52 int reset_front_right; 54 int reset_front_right;
53 int reset_rear_left; 55 int reset_rear_left;
56 int reset_rear_right;
57 int reset_woofer;
58 #if SND_LIB_VERSION >= ALSA_VERSION (1, 0, 10)
54 int reset_rear_center; 59 int reset_rear_center;
55 int reset_rear_right;
56 int reset_side_left; 60 int reset_side_left;
57 int reset_side_right; 61 int reset_side_right;
58 int reset_woofer; 62 #endif
59 63
60 /* Old volumes for the channels */ 64 /* Old volumes for the channels */
61 long front_left_vol; 65 long front_left_vol;
62 long front_center_vol; 66 long front_center_vol;
63 long front_right_vol; 67 long front_right_vol;
64 long rear_left_vol; 68 long rear_left_vol;
69 long rear_right_vol;
70 long woofer_vol;
71 #if SND_LIB_VERSION >= ALSA_VERSION (1, 0, 10)
65 long rear_center_vol; 72 long rear_center_vol;
66 long rear_right_vol;
67 long side_left_vol; 73 long side_left_vol;
68 long side_right_vol; 74 long side_right_vol;
69 long woofer_vol; 75 #endif
70 }; 76 };
71 77
72 /* Assemble a machine half-word in little-endian order */ 78 /* Assemble a machine half-word in little-endian order */
73 #define HALF_LE(arr,start) (arr[start] + (arr[start + 1] << 8)) 79 #define HALF_LE(arr,start) (arr[start] + (arr[start + 1] << 8))
74 80
225 == NULL) 231 == NULL)
226 return; 232 return;
227 } 233 }
228 234
229 /* Translate the Lisp volume range to the device volume range */ 235 /* Translate the Lisp volume range to the device volume range */
236 #if SND_LIB_VERSION < ALSA_VERSION (1, 0, 10)
237 snd_mixer_selem_get_playback_volume_range (mix->vol_ctl, &min_vol, &max_vol);
238 #else
230 if (snd_mixer_selem_get_playback_volume_range (mix->vol_ctl, &min_vol, 239 if (snd_mixer_selem_get_playback_volume_range (mix->vol_ctl, &min_vol,
231 &max_vol) < 0) 240 &max_vol) < 0)
232 return; 241 return;
242 #endif
233 243
234 dev_vol = volume * (max_vol - min_vol) / 100 + min_vol; 244 dev_vol = volume * (max_vol - min_vol) / 100 + min_vol;
235 245
236 /* Record the old volumes */ 246 /* Record the old volumes */
237 if (snd_mixer_selem_get_playback_volume 247 if (snd_mixer_selem_get_playback_volume
249 if (snd_mixer_selem_get_playback_volume 259 if (snd_mixer_selem_get_playback_volume
250 (mix->vol_ctl, SND_MIXER_SCHN_REAR_LEFT, &mix->rear_left_vol) >= 0) 260 (mix->vol_ctl, SND_MIXER_SCHN_REAR_LEFT, &mix->rear_left_vol) >= 0)
251 mix->reset_rear_left = 1; 261 mix->reset_rear_left = 1;
252 262
253 if (snd_mixer_selem_get_playback_volume 263 if (snd_mixer_selem_get_playback_volume
264 (mix->vol_ctl, SND_MIXER_SCHN_REAR_RIGHT, &mix->rear_right_vol) >= 0)
265 mix->reset_rear_right = 1;
266
267 if (snd_mixer_selem_get_playback_volume
268 (mix->vol_ctl, SND_MIXER_SCHN_WOOFER, &mix->woofer_vol) >= 0)
269 mix->reset_woofer = 1;
270
271 #if SND_LIB_VERSION >= ALSA_VERSION (1, 0, 10)
272 if (snd_mixer_selem_get_playback_volume
254 (mix->vol_ctl, SND_MIXER_SCHN_REAR_CENTER, &mix->rear_center_vol) >= 0) 273 (mix->vol_ctl, SND_MIXER_SCHN_REAR_CENTER, &mix->rear_center_vol) >= 0)
255 mix->reset_rear_center = 1; 274 mix->reset_rear_center = 1;
256 275
257 if (snd_mixer_selem_get_playback_volume 276 if (snd_mixer_selem_get_playback_volume
258 (mix->vol_ctl, SND_MIXER_SCHN_REAR_RIGHT, &mix->rear_right_vol) >= 0)
259 mix->reset_rear_right = 1;
260
261 if (snd_mixer_selem_get_playback_volume
262 (mix->vol_ctl, SND_MIXER_SCHN_SIDE_LEFT, &mix->side_left_vol) >= 0) 277 (mix->vol_ctl, SND_MIXER_SCHN_SIDE_LEFT, &mix->side_left_vol) >= 0)
263 mix->reset_side_left = 1; 278 mix->reset_side_left = 1;
264 279
265 if (snd_mixer_selem_get_playback_volume 280 if (snd_mixer_selem_get_playback_volume
266 (mix->vol_ctl, SND_MIXER_SCHN_SIDE_RIGHT, &mix->side_right_vol) >= 0) 281 (mix->vol_ctl, SND_MIXER_SCHN_SIDE_RIGHT, &mix->side_right_vol) >= 0)
267 mix->reset_side_right = 1; 282 mix->reset_side_right = 1;
268 283 #endif
269 if (snd_mixer_selem_get_playback_volume
270 (mix->vol_ctl, SND_MIXER_SCHN_WOOFER, &mix->woofer_vol) >= 0)
271 mix->reset_woofer = 1;
272 284
273 /* Set the volume */ 285 /* Set the volume */
274 snd_mixer_selem_set_playback_volume_all (mix->vol_ctl, dev_vol); 286 snd_mixer_selem_set_playback_volume_all (mix->vol_ctl, dev_vol);
275 } 287 }
276 288
291 303
292 if (mix->reset_rear_left) 304 if (mix->reset_rear_left)
293 snd_mixer_selem_set_playback_volume 305 snd_mixer_selem_set_playback_volume
294 (mix->vol_ctl, SND_MIXER_SCHN_REAR_LEFT, mix->rear_left_vol); 306 (mix->vol_ctl, SND_MIXER_SCHN_REAR_LEFT, mix->rear_left_vol);
295 307
308 if (mix->reset_rear_right)
309 snd_mixer_selem_set_playback_volume
310 (mix->vol_ctl, SND_MIXER_SCHN_REAR_RIGHT, mix->rear_right_vol);
311
312 if (mix->reset_woofer)
313 snd_mixer_selem_set_playback_volume
314 (mix->vol_ctl, SND_MIXER_SCHN_WOOFER, mix->woofer_vol);
315
316 #if SND_LIB_VERSION >= ALSA_VERSION (1, 0, 10)
296 if (mix->reset_rear_center) 317 if (mix->reset_rear_center)
297 snd_mixer_selem_set_playback_volume 318 snd_mixer_selem_set_playback_volume
298 (mix->vol_ctl, SND_MIXER_SCHN_REAR_CENTER, mix->rear_center_vol); 319 (mix->vol_ctl, SND_MIXER_SCHN_REAR_CENTER, mix->rear_center_vol);
299 320
300 if (mix->reset_rear_right)
301 snd_mixer_selem_set_playback_volume
302 (mix->vol_ctl, SND_MIXER_SCHN_REAR_RIGHT, mix->rear_right_vol);
303
304 if (mix->reset_side_left) 321 if (mix->reset_side_left)
305 snd_mixer_selem_set_playback_volume 322 snd_mixer_selem_set_playback_volume
306 (mix->vol_ctl, SND_MIXER_SCHN_SIDE_LEFT, mix->side_left_vol); 323 (mix->vol_ctl, SND_MIXER_SCHN_SIDE_LEFT, mix->side_left_vol);
307 324
308 if (mix->reset_side_right) 325 if (mix->reset_side_right)
309 snd_mixer_selem_set_playback_volume 326 snd_mixer_selem_set_playback_volume
310 (mix->vol_ctl, SND_MIXER_SCHN_SIDE_RIGHT, mix->side_right_vol); 327 (mix->vol_ctl, SND_MIXER_SCHN_SIDE_RIGHT, mix->side_right_vol);
311 328 #endif
312 if (mix->reset_woofer)
313 snd_mixer_selem_set_playback_volume
314 (mix->vol_ctl, SND_MIXER_SCHN_WOOFER, mix->woofer_vol);
315 329
316 snd_mixer_close (mix->mixer); 330 snd_mixer_close (mix->mixer);
317 } 331 }
318 332
319 int 333 int