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Avoid enumerating multiple devices with the same name
[openal-soft.git] / Alc / backends / pulseaudio.c
bloba4be58e20a2e94382c8aec356a81b9bba987d6d4
1 /**
2 * OpenAL cross platform audio library
3 * Copyright (C) 2009 by Konstantinos Natsakis <konstantinos.natsakis@gmail.com>
4 * Copyright (C) 2010 by Chris Robinson <chris.kcat@gmail.com>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
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
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
19 * Or go to http://www.gnu.org/copyleft/lgpl.html
20 */
21
22 #include "config.h"
23
24 #include "alMain.h"
25
26 #include <pulse/pulseaudio.h>
27
28 #if PA_API_VERSION == 11
29 #define PA_STREAM_ADJUST_LATENCY 0x2000U
30 #define PA_STREAM_EARLY_REQUESTS 0x4000U
31 static __inline int PA_STREAM_IS_GOOD(pa_stream_state_t x)
32 {
33 return (x == PA_STREAM_CREATING || x == PA_STREAM_READY);
34 }
35 static __inline int PA_CONTEXT_IS_GOOD(pa_context_state_t x)
36 {
37 return (x == PA_CONTEXT_CONNECTING || x == PA_CONTEXT_AUTHORIZING ||
38 x == PA_CONTEXT_SETTING_NAME || x == PA_CONTEXT_READY);
39 }
40 #define PA_STREAM_IS_GOOD PA_STREAM_IS_GOOD
41 #define PA_CONTEXT_IS_GOOD PA_CONTEXT_IS_GOOD
42 #elif PA_API_VERSION != 12
43 #error Invalid PulseAudio API version
44 #endif
45
46 #ifndef PA_CHECK_VERSION
47 #define PA_CHECK_VERSION(major,minor,micro) \
48 ((PA_MAJOR > (major)) || \
49 (PA_MAJOR == (major) && PA_MINOR > (minor)) || \
50 (PA_MAJOR == (major) && PA_MINOR == (minor) && PA_MICRO >= (micro)))
51 #endif
52
53 static void *pa_handle;
54 #ifdef HAVE_DYNLOAD
55 #define MAKE_FUNC(x) static typeof(x) * p##x
56 MAKE_FUNC(pa_context_unref);
57 MAKE_FUNC(pa_sample_spec_valid);
58 MAKE_FUNC(pa_frame_size);
59 MAKE_FUNC(pa_stream_drop);
60 MAKE_FUNC(pa_strerror);
61 MAKE_FUNC(pa_context_get_state);
62 MAKE_FUNC(pa_stream_get_state);
63 MAKE_FUNC(pa_threaded_mainloop_signal);
64 MAKE_FUNC(pa_stream_peek);
65 MAKE_FUNC(pa_threaded_mainloop_wait);
66 MAKE_FUNC(pa_threaded_mainloop_unlock);
67 MAKE_FUNC(pa_threaded_mainloop_in_thread);
68 MAKE_FUNC(pa_context_new);
69 MAKE_FUNC(pa_threaded_mainloop_stop);
70 MAKE_FUNC(pa_context_disconnect);
71 MAKE_FUNC(pa_threaded_mainloop_start);
72 MAKE_FUNC(pa_threaded_mainloop_get_api);
73 MAKE_FUNC(pa_context_set_state_callback);
74 MAKE_FUNC(pa_stream_write);
75 MAKE_FUNC(pa_xfree);
76 MAKE_FUNC(pa_stream_connect_record);
77 MAKE_FUNC(pa_stream_connect_playback);
78 MAKE_FUNC(pa_stream_readable_size);
79 MAKE_FUNC(pa_stream_writable_size);
80 MAKE_FUNC(pa_stream_cork);
81 MAKE_FUNC(pa_stream_is_suspended);
82 MAKE_FUNC(pa_stream_get_device_name);
83 MAKE_FUNC(pa_path_get_filename);
84 MAKE_FUNC(pa_get_binary_name);
85 MAKE_FUNC(pa_threaded_mainloop_free);
86 MAKE_FUNC(pa_context_errno);
87 MAKE_FUNC(pa_xmalloc);
88 MAKE_FUNC(pa_stream_unref);
89 MAKE_FUNC(pa_threaded_mainloop_accept);
90 MAKE_FUNC(pa_stream_set_write_callback);
91 MAKE_FUNC(pa_threaded_mainloop_new);
92 MAKE_FUNC(pa_context_connect);
93 MAKE_FUNC(pa_stream_set_buffer_attr);
94 MAKE_FUNC(pa_stream_get_buffer_attr);
95 MAKE_FUNC(pa_stream_get_sample_spec);
96 MAKE_FUNC(pa_stream_get_time);
97 MAKE_FUNC(pa_stream_set_read_callback);
98 MAKE_FUNC(pa_stream_set_state_callback);
99 MAKE_FUNC(pa_stream_set_moved_callback);
100 MAKE_FUNC(pa_stream_set_underflow_callback);
101 MAKE_FUNC(pa_stream_new);
102 MAKE_FUNC(pa_stream_disconnect);
103 MAKE_FUNC(pa_threaded_mainloop_lock);
104 MAKE_FUNC(pa_channel_map_init_auto);
105 MAKE_FUNC(pa_channel_map_parse);
106 MAKE_FUNC(pa_channel_map_snprint);
107 MAKE_FUNC(pa_channel_map_equal);
108 MAKE_FUNC(pa_context_get_server_info);
109 MAKE_FUNC(pa_context_get_sink_info_by_name);
110 MAKE_FUNC(pa_context_get_sink_info_list);
111 MAKE_FUNC(pa_context_get_source_info_list);
112 MAKE_FUNC(pa_operation_get_state);
113 MAKE_FUNC(pa_operation_unref);
114 #if PA_CHECK_VERSION(0,9,15)
115 MAKE_FUNC(pa_channel_map_superset);
116 MAKE_FUNC(pa_stream_set_buffer_attr_callback);
117 #endif
118 #if PA_CHECK_VERSION(0,9,16)
119 MAKE_FUNC(pa_stream_begin_write);
120 #endif
121 #undef MAKE_FUNC
122
123 #define pa_context_unref ppa_context_unref
124 #define pa_sample_spec_valid ppa_sample_spec_valid
125 #define pa_frame_size ppa_frame_size
126 #define pa_stream_drop ppa_stream_drop
127 #define pa_strerror ppa_strerror
128 #define pa_context_get_state ppa_context_get_state
129 #define pa_stream_get_state ppa_stream_get_state
130 #define pa_threaded_mainloop_signal ppa_threaded_mainloop_signal
131 #define pa_stream_peek ppa_stream_peek
132 #define pa_threaded_mainloop_wait ppa_threaded_mainloop_wait
133 #define pa_threaded_mainloop_unlock ppa_threaded_mainloop_unlock
134 #define pa_threaded_mainloop_in_thread ppa_threaded_mainloop_in_thread
135 #define pa_context_new ppa_context_new
136 #define pa_threaded_mainloop_stop ppa_threaded_mainloop_stop
137 #define pa_context_disconnect ppa_context_disconnect
138 #define pa_threaded_mainloop_start ppa_threaded_mainloop_start
139 #define pa_threaded_mainloop_get_api ppa_threaded_mainloop_get_api
140 #define pa_context_set_state_callback ppa_context_set_state_callback
141 #define pa_stream_write ppa_stream_write
142 #define pa_xfree ppa_xfree
143 #define pa_stream_connect_record ppa_stream_connect_record
144 #define pa_stream_connect_playback ppa_stream_connect_playback
145 #define pa_stream_readable_size ppa_stream_readable_size
146 #define pa_stream_writable_size ppa_stream_writable_size
147 #define pa_stream_cork ppa_stream_cork
148 #define pa_stream_is_suspended ppa_stream_is_suspended
149 #define pa_stream_get_device_name ppa_stream_get_device_name
150 #define pa_path_get_filename ppa_path_get_filename
151 #define pa_get_binary_name ppa_get_binary_name
152 #define pa_threaded_mainloop_free ppa_threaded_mainloop_free
153 #define pa_context_errno ppa_context_errno
154 #define pa_xmalloc ppa_xmalloc
155 #define pa_stream_unref ppa_stream_unref
156 #define pa_threaded_mainloop_accept ppa_threaded_mainloop_accept
157 #define pa_stream_set_write_callback ppa_stream_set_write_callback
158 #define pa_threaded_mainloop_new ppa_threaded_mainloop_new
159 #define pa_context_connect ppa_context_connect
160 #define pa_stream_set_buffer_attr ppa_stream_set_buffer_attr
161 #define pa_stream_get_buffer_attr ppa_stream_get_buffer_attr
162 #define pa_stream_get_sample_spec ppa_stream_get_sample_spec
163 #define pa_stream_get_time ppa_stream_get_time
164 #define pa_stream_set_read_callback ppa_stream_set_read_callback
165 #define pa_stream_set_state_callback ppa_stream_set_state_callback
166 #define pa_stream_set_moved_callback ppa_stream_set_moved_callback
167 #define pa_stream_set_underflow_callback ppa_stream_set_underflow_callback
168 #define pa_stream_new ppa_stream_new
169 #define pa_stream_disconnect ppa_stream_disconnect
170 #define pa_threaded_mainloop_lock ppa_threaded_mainloop_lock
171 #define pa_channel_map_init_auto ppa_channel_map_init_auto
172 #define pa_channel_map_parse ppa_channel_map_parse
173 #define pa_channel_map_snprint ppa_channel_map_snprint
174 #define pa_channel_map_equal ppa_channel_map_equal
175 #define pa_context_get_server_info ppa_context_get_server_info
176 #define pa_context_get_sink_info_by_name ppa_context_get_sink_info_by_name
177 #define pa_context_get_sink_info_list ppa_context_get_sink_info_list
178 #define pa_context_get_source_info_list ppa_context_get_source_info_list
179 #define pa_operation_get_state ppa_operation_get_state
180 #define pa_operation_unref ppa_operation_unref
181 #if PA_CHECK_VERSION(0,9,15)
182 #define pa_channel_map_superset ppa_channel_map_superset
183 #define pa_stream_set_buffer_attr_callback ppa_stream_set_buffer_attr_callback
184 #endif
185 #if PA_CHECK_VERSION(0,9,16)
186 #define pa_stream_begin_write ppa_stream_begin_write
187 #endif
188
189 #endif
190
191 #ifndef PATH_MAX
192 #define PATH_MAX 4096
193 #endif
194
195 typedef struct {
196 char *device_name;
197
198 const void *cap_store;
199 size_t cap_len;
200 size_t cap_remain;
201
202 ALCuint last_readable;
203
204 pa_buffer_attr attr;
205 pa_sample_spec spec;
206
207 pa_threaded_mainloop *loop;
208
209 ALvoid *thread;
210 volatile ALboolean killNow;
211
212 pa_stream *stream;
213 pa_context *context;
214 } pulse_data;
215
216 typedef struct {
217 char *name;
218 char *device_name;
219 } DevMap;
220
221
222 static DevMap *allDevNameMap;
223 static ALuint numDevNames;
224 static DevMap *allCaptureDevNameMap;
225 static ALuint numCaptureDevNames;
226 static pa_context_flags_t pulse_ctx_flags;
227
228
229 static void context_state_callback(pa_context *context, void *pdata)
230 {
231 pa_threaded_mainloop *loop = pdata;
232 pa_context_state_t state;
233
234 state = pa_context_get_state(context);
235 if(state == PA_CONTEXT_READY || !PA_CONTEXT_IS_GOOD(state))
236 pa_threaded_mainloop_signal(loop, 0);
237 }
238
239 static pa_context *connect_context(pa_threaded_mainloop *loop, ALboolean silent)
240 {
241 const char *name = "OpenAL Soft";
242 char path_name[PATH_MAX];
243 pa_context_state_t state;
244 pa_context *context;
245 int err;
246
247 if(pa_get_binary_name(path_name, sizeof(path_name)))
248 name = pa_path_get_filename(path_name);
249
250 context = pa_context_new(pa_threaded_mainloop_get_api(loop), name);
251 if(!context)
252 {
253 ERR("pa_context_new() failed\n");
254 return NULL;
255 }
256
257 pa_context_set_state_callback(context, context_state_callback, loop);
258
259 if((err=pa_context_connect(context, NULL, pulse_ctx_flags, NULL)) >= 0)
260 {
261 while((state=pa_context_get_state(context)) != PA_CONTEXT_READY)
262 {
263 if(!PA_CONTEXT_IS_GOOD(state))
264 {
265 err = pa_context_errno(context);
266 if(err > 0) err = -err;
267 break;
268 }
269
270 pa_threaded_mainloop_wait(loop);
271 }
272 }
273 pa_context_set_state_callback(context, NULL, NULL);
274
275 if(err < 0)
276 {
277 if(!silent)
278 ERR("Context did not connect: %s\n", pa_strerror(err));
279 pa_context_unref(context);
280 return NULL;
281 }
282
283 return context;
284 }
285
286
287 static ALCboolean pulse_load(void) //{{{
288 {
289 ALCboolean ret = ALC_TRUE;
290 if(!pa_handle)
291 {
292 #ifdef HAVE_DYNLOAD
293
294 #ifdef _WIN32
295 #define PALIB "libpulse-0.dll"
296 #elif defined(__APPLE__) && defined(__MACH__)
297 #define PALIB "libpulse.0.dylib"
298 #else
299 #define PALIB "libpulse.so.0"
300 #endif
301 pa_handle = LoadLib(PALIB);
302 if(!pa_handle)
303 return ALC_FALSE;
304
305 #define LOAD_FUNC(x) do { \
306 p##x = GetSymbol(pa_handle, #x); \
307 if(!(p##x)) { \
308 ret = ALC_FALSE; \
309 } \
310 } while(0)
311 LOAD_FUNC(pa_context_unref);
312 LOAD_FUNC(pa_sample_spec_valid);
313 LOAD_FUNC(pa_stream_drop);
314 LOAD_FUNC(pa_frame_size);
315 LOAD_FUNC(pa_strerror);
316 LOAD_FUNC(pa_context_get_state);
317 LOAD_FUNC(pa_stream_get_state);
318 LOAD_FUNC(pa_threaded_mainloop_signal);
319 LOAD_FUNC(pa_stream_peek);
320 LOAD_FUNC(pa_threaded_mainloop_wait);
321 LOAD_FUNC(pa_threaded_mainloop_unlock);
322 LOAD_FUNC(pa_threaded_mainloop_in_thread);
323 LOAD_FUNC(pa_context_new);
324 LOAD_FUNC(pa_threaded_mainloop_stop);
325 LOAD_FUNC(pa_context_disconnect);
326 LOAD_FUNC(pa_threaded_mainloop_start);
327 LOAD_FUNC(pa_threaded_mainloop_get_api);
328 LOAD_FUNC(pa_context_set_state_callback);
329 LOAD_FUNC(pa_stream_write);
330 LOAD_FUNC(pa_xfree);
331 LOAD_FUNC(pa_stream_connect_record);
332 LOAD_FUNC(pa_stream_connect_playback);
333 LOAD_FUNC(pa_stream_readable_size);
334 LOAD_FUNC(pa_stream_writable_size);
335 LOAD_FUNC(pa_stream_cork);
336 LOAD_FUNC(pa_stream_is_suspended);
337 LOAD_FUNC(pa_stream_get_device_name);
338 LOAD_FUNC(pa_path_get_filename);
339 LOAD_FUNC(pa_get_binary_name);
340 LOAD_FUNC(pa_threaded_mainloop_free);
341 LOAD_FUNC(pa_context_errno);
342 LOAD_FUNC(pa_xmalloc);
343 LOAD_FUNC(pa_stream_unref);
344 LOAD_FUNC(pa_threaded_mainloop_accept);
345 LOAD_FUNC(pa_stream_set_write_callback);
346 LOAD_FUNC(pa_threaded_mainloop_new);
347 LOAD_FUNC(pa_context_connect);
348 LOAD_FUNC(pa_stream_set_buffer_attr);
349 LOAD_FUNC(pa_stream_get_buffer_attr);
350 LOAD_FUNC(pa_stream_get_sample_spec);
351 LOAD_FUNC(pa_stream_get_time);
352 LOAD_FUNC(pa_stream_set_read_callback);
353 LOAD_FUNC(pa_stream_set_state_callback);
354 LOAD_FUNC(pa_stream_set_moved_callback);
355 LOAD_FUNC(pa_stream_set_underflow_callback);
356 LOAD_FUNC(pa_stream_new);
357 LOAD_FUNC(pa_stream_disconnect);
358 LOAD_FUNC(pa_threaded_mainloop_lock);
359 LOAD_FUNC(pa_channel_map_init_auto);
360 LOAD_FUNC(pa_channel_map_parse);
361 LOAD_FUNC(pa_channel_map_snprint);
362 LOAD_FUNC(pa_channel_map_equal);
363 LOAD_FUNC(pa_context_get_server_info);
364 LOAD_FUNC(pa_context_get_sink_info_by_name);
365 LOAD_FUNC(pa_context_get_sink_info_list);
366 LOAD_FUNC(pa_context_get_source_info_list);
367 LOAD_FUNC(pa_operation_get_state);
368 LOAD_FUNC(pa_operation_unref);
369 #undef LOAD_FUNC
370 #define LOAD_OPTIONAL_FUNC(x) do { \
371 p##x = GetSymbol(pa_handle, #x); \
372 } while(0)
373 #if PA_CHECK_VERSION(0,9,15)
374 LOAD_OPTIONAL_FUNC(pa_channel_map_superset);
375 LOAD_OPTIONAL_FUNC(pa_stream_set_buffer_attr_callback);
376 #endif
377 #if PA_CHECK_VERSION(0,9,16)
378 LOAD_OPTIONAL_FUNC(pa_stream_begin_write);
379 #endif
380 #undef LOAD_OPTIONAL_FUNC
381
382 #else /* HAVE_DYNLOAD */
383 pa_handle = (void*)0xDEADBEEF;
384 #endif
385
386 if(ret == ALC_FALSE)
387 {
388 #ifdef HAVE_DYNLOAD
389 CloseLib(pa_handle);
390 #endif
391 pa_handle = NULL;
392 }
393 }
394 return ret;
395 } //}}}
396
397 // PulseAudio Event Callbacks //{{{
398 static void stream_state_callback(pa_stream *stream, void *pdata) //{{{
399 {
400 pa_threaded_mainloop *loop = pdata;
401 pa_stream_state_t state;
402
403 state = pa_stream_get_state(stream);
404 if(state == PA_STREAM_READY || !PA_STREAM_IS_GOOD(state))
405 pa_threaded_mainloop_signal(loop, 0);
406 }//}}}
407
408 static void stream_signal_callback(pa_stream *stream, void *pdata) //{{{
409 {
410 ALCdevice *Device = pdata;
411 pulse_data *data = Device->ExtraData;
412 (void)stream;
413
414 pa_threaded_mainloop_signal(data->loop, 0);
415 }//}}}
416
417 static void stream_buffer_attr_callback(pa_stream *stream, void *pdata) //{{{
418 {
419 const pa_buffer_attr *attr;
420 (void)pdata;
421
422 attr = pa_stream_get_buffer_attr(stream);
423 WARN("PulseAudio modified buffer length: minreq=%d, tlength=%d\n", attr->minreq, attr->tlength);
424 }//}}}
425
426 static void stream_device_callback(pa_stream *stream, void *pdata) //{{{
427 {
428 ALCdevice *Device = pdata;
429 pulse_data *data = Device->ExtraData;
430
431 free(data->device_name);
432 data->device_name = strdup(pa_stream_get_device_name(stream));
433 }//}}}
434
435 static void context_state_callback2(pa_context *context, void *pdata) //{{{
436 {
437 ALCdevice *Device = pdata;
438 pulse_data *data = Device->ExtraData;
439
440 if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
441 {
442 ERR("Received context failure!\n");
443 aluHandleDisconnect(Device);
444 }
445 pa_threaded_mainloop_signal(data->loop, 0);
446 }//}}}
447
448 static void stream_state_callback2(pa_stream *stream, void *pdata) //{{{
449 {
450 ALCdevice *Device = pdata;
451 pulse_data *data = Device->ExtraData;
452
453 if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
454 {
455 ERR("Received stream failure!\n");
456 aluHandleDisconnect(Device);
457 }
458 pa_threaded_mainloop_signal(data->loop, 0);
459 }//}}}
460
461 static void stream_success_callback(pa_stream *stream, int success, void *pdata) //{{{
462 {
463 ALCdevice *Device = pdata;
464 pulse_data *data = Device->ExtraData;
465 (void)stream;
466 (void)success;
467
468 pa_threaded_mainloop_signal(data->loop, 0);
469 }//}}}
470
471 static void sink_info_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata) //{{{
472 {
473 ALCdevice *device = pdata;
474 pulse_data *data = device->ExtraData;
475 char chanmap_str[256] = "";
476 const struct {
477 const char *str;
478 enum DevFmtChannels chans;
479 } chanmaps[] = {
480 { "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right",
481 DevFmtX71 },
482 { "front-left,front-right,front-center,lfe,rear-center,side-left,side-right",
483 DevFmtX61 },
484 { "front-left,front-right,front-center,lfe,rear-left,rear-right",
485 DevFmtX51 },
486 { "front-left,front-right,front-center,lfe,side-left,side-right",
487 DevFmtX51Side },
488 { "front-left,front-right,rear-left,rear-right", DevFmtQuad },
489 { "front-left,front-right", DevFmtStereo },
490 { "mono", DevFmtMono },
491 { NULL, 0 }
492 };
493 int i;
494 (void)context;
495
496 if(eol)
497 {
498 pa_threaded_mainloop_signal(data->loop, 0);
499 return;
500 }
501
502 for(i = 0;chanmaps[i].str;i++)
503 {
504 pa_channel_map map;
505 if(!pa_channel_map_parse(&map, chanmaps[i].str))
506 continue;
507
508 if(pa_channel_map_equal(&info->channel_map, &map)
509 #if PA_CHECK_VERSION(0,9,15)
510 || (pa_channel_map_superset &&
511 pa_channel_map_superset(&info->channel_map, &map))
512 #endif
513 )
514 {
515 device->FmtChans = chanmaps[i].chans;
516 return;
517 }
518 }
519
520 pa_channel_map_snprint(chanmap_str, sizeof(chanmap_str), &info->channel_map);
521 ERR("Failed to find format for channel map:\n %s\n", chanmap_str);
522 }//}}}
523
524 static void sink_device_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata) //{{{
525 {
526 pa_threaded_mainloop *loop = pdata;
527 void *temp;
528 ALuint i;
529
530 (void)context;
531
532 if(eol)
533 {
534 pa_threaded_mainloop_signal(loop, 0);
535 return;
536 }
537
538 for(i = 0;i < numDevNames;i++)
539 {
540 if(strcmp(info->name, allDevNameMap[i].device_name) == 0)
541 return;
542 }
543
544 TRACE("Got device \"%s\", \"%s\"\n", info->description, info->name);
545
546 temp = realloc(allDevNameMap, (numDevNames+1) * sizeof(*allDevNameMap));
547 if(temp)
548 {
549 allDevNameMap = temp;
550 allDevNameMap[numDevNames].name = strdup(info->description);
551 allDevNameMap[numDevNames].device_name = strdup(info->name);
552 numDevNames++;
553 }
554 }//}}}
555
556 static void source_device_callback(pa_context *context, const pa_source_info *info, int eol, void *pdata) //{{{
557 {
558 pa_threaded_mainloop *loop = pdata;
559 void *temp;
560 ALuint i;
561
562 (void)context;
563
564 if(eol)
565 {
566 pa_threaded_mainloop_signal(loop, 0);
567 return;
568 }
569
570 for(i = 0;i < numCaptureDevNames;i++)
571 {
572 if(strcmp(info->name, allCaptureDevNameMap[i].device_name) == 0)
573 return;
574 }
575
576 TRACE("Got device \"%s\", \"%s\"\n", info->description, info->name);
577
578 temp = realloc(allCaptureDevNameMap, (numCaptureDevNames+1) * sizeof(*allCaptureDevNameMap));
579 if(temp)
580 {
581 allCaptureDevNameMap = temp;
582 allCaptureDevNameMap[numCaptureDevNames].name = strdup(info->description);
583 allCaptureDevNameMap[numCaptureDevNames].device_name = strdup(info->name);
584 numCaptureDevNames++;
585 }
586 }//}}}
587 //}}}
588
589 // PulseAudio I/O Callbacks //{{{
590 static void stream_write_callback(pa_stream *stream, size_t len, void *pdata) //{{{
591 {
592 ALCdevice *Device = pdata;
593 pulse_data *data = Device->ExtraData;
594 (void)stream;
595 (void)len;
596
597 pa_threaded_mainloop_signal(data->loop, 0);
598 } //}}}
599 //}}}
600
601 static ALuint PulseProc(ALvoid *param)
602 {
603 ALCdevice *Device = param;
604 pulse_data *data = Device->ExtraData;
605 size_t frame_size;
606 size_t len;
607
608 SetRTPriority();
609
610 frame_size = pa_frame_size(&data->spec);
611 pa_threaded_mainloop_lock(data->loop);
612 do {
613 len = pa_stream_writable_size(data->stream);
614 if(len < data->attr.minreq)
615 {
616 pa_threaded_mainloop_wait(data->loop);
617 continue;
618 }
619 len -= len%data->attr.minreq;
620
621 while(len > 0)
622 {
623 size_t newlen = len;
624 void *buf;
625 pa_free_cb_t free_func = NULL;
626
627 #if PA_CHECK_VERSION(0,9,16)
628 if(!pa_stream_begin_write ||
629 pa_stream_begin_write(data->stream, &buf, &newlen) < 0)
630 #endif
631 {
632 buf = pa_xmalloc(newlen);
633 free_func = pa_xfree;
634 }
635 pa_threaded_mainloop_unlock(data->loop);
636
637 aluMixData(Device, buf, newlen/frame_size);
638
639 pa_threaded_mainloop_lock(data->loop);
640 pa_stream_write(data->stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
641 len -= newlen;
642 }
643 } while(!data->killNow && Device->Connected);
644 pa_threaded_mainloop_unlock(data->loop);
645
646 return 0;
647 }
648
649 static pa_stream *connect_playback_stream(const char *device_name,
650 pa_threaded_mainloop *loop, pa_context *context,
651 pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
652 pa_channel_map *chanmap)
653 {
654 pa_stream_state_t state;
655 pa_stream *stream;
656
657 stream = pa_stream_new(context, "Playback Stream", spec, chanmap);
658 if(!stream)
659 {
660 ERR("pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(context)));
661 return NULL;
662 }
663
664 pa_stream_set_state_callback(stream, stream_state_callback, loop);
665
666 if(pa_stream_connect_playback(stream, device_name, attr, flags, NULL, NULL) < 0)
667 {
668 ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
669 pa_stream_unref(stream);
670 return NULL;
671 }
672
673 while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
674 {
675 if(!PA_STREAM_IS_GOOD(state))
676 {
677 ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
678 pa_stream_unref(stream);
679 return NULL;
680 }
681
682 pa_threaded_mainloop_wait(loop);
683 }
684 pa_stream_set_state_callback(stream, NULL, NULL);
685
686 return stream;
687 }
688
689 static void probe_devices(ALboolean capture)
690 {
691 pa_threaded_mainloop *loop;
692
693 if(capture == AL_FALSE)
694 allDevNameMap = malloc(sizeof(DevMap) * 1);
695 else
696 allCaptureDevNameMap = malloc(sizeof(DevMap) * 1);
697
698 if((loop=pa_threaded_mainloop_new()) &&
699 pa_threaded_mainloop_start(loop) >= 0)
700 {
701 pa_context *context;
702
703 pa_threaded_mainloop_lock(loop);
704 context = connect_context(loop, AL_FALSE);
705 if(context)
706 {
707 pa_operation *o;
708
709 if(capture == AL_FALSE)
710 o = pa_context_get_sink_info_list(context, sink_device_callback, loop);
711 else
712 o = pa_context_get_source_info_list(context, source_device_callback, loop);
713 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
714 pa_threaded_mainloop_wait(loop);
715 pa_operation_unref(o);
716
717 pa_context_disconnect(context);
718 pa_context_unref(context);
719 }
720 pa_threaded_mainloop_unlock(loop);
721 pa_threaded_mainloop_stop(loop);
722 }
723 if(loop)
724 pa_threaded_mainloop_free(loop);
725 }
726
727
728 static ALCboolean pulse_open(ALCdevice *device, const ALCchar *device_name) //{{{
729 {
730 pulse_data *data = pa_xmalloc(sizeof(pulse_data));
731 memset(data, 0, sizeof(*data));
732
733 if(!(data->loop = pa_threaded_mainloop_new()))
734 {
735 ERR("pa_threaded_mainloop_new() failed!\n");
736 goto out;
737 }
738 if(pa_threaded_mainloop_start(data->loop) < 0)
739 {
740 ERR("pa_threaded_mainloop_start() failed\n");
741 goto out;
742 }
743
744 pa_threaded_mainloop_lock(data->loop);
745 device->ExtraData = data;
746
747 data->context = connect_context(data->loop, AL_FALSE);
748 if(!data->context)
749 {
750 pa_threaded_mainloop_unlock(data->loop);
751 goto out;
752 }
753 pa_context_set_state_callback(data->context, context_state_callback2, device);
754
755 device->szDeviceName = strdup(device_name);
756
757 pa_threaded_mainloop_unlock(data->loop);
758 return ALC_TRUE;
759
760 out:
761 if(data->loop)
762 {
763 pa_threaded_mainloop_stop(data->loop);
764 pa_threaded_mainloop_free(data->loop);
765 }
766
767 device->ExtraData = NULL;
768 pa_xfree(data);
769 return ALC_FALSE;
770 } //}}}
771
772 static void pulse_close(ALCdevice *device) //{{{
773 {
774 pulse_data *data = device->ExtraData;
775
776 pa_threaded_mainloop_lock(data->loop);
777
778 if(data->stream)
779 {
780 pa_stream_disconnect(data->stream);
781 pa_stream_unref(data->stream);
782 }
783
784 pa_context_disconnect(data->context);
785 pa_context_unref(data->context);
786
787 pa_threaded_mainloop_unlock(data->loop);
788
789 pa_threaded_mainloop_stop(data->loop);
790 pa_threaded_mainloop_free(data->loop);
791
792 free(data->device_name);
793
794 device->ExtraData = NULL;
795 pa_xfree(data);
796 } //}}}
797 //}}}
798
799 // OpenAL {{{
800 static ALCenum pulse_open_playback(ALCdevice *device, const ALCchar *device_name) //{{{
801 {
802 char *pulse_name = NULL;
803 pa_sample_spec spec;
804 pa_stream *stream;
805 pulse_data *data;
806
807 if(!allDevNameMap)
808 probe_devices(AL_FALSE);
809
810 if(!device_name && numDevNames > 0)
811 {
812 device_name = allDevNameMap[0].name;
813 pulse_name = allDevNameMap[0].device_name;
814 }
815 else
816 {
817 ALuint i;
818
819 for(i = 0;i < numDevNames;i++)
820 {
821 if(strcmp(device_name, allDevNameMap[i].name) == 0)
822 {
823 pulse_name = allDevNameMap[i].device_name;
824 break;
825 }
826 }
827 if(i == numDevNames)
828 return ALC_INVALID_VALUE;
829 }
830
831 if(pulse_open(device, device_name) == ALC_FALSE)
832 return ALC_INVALID_VALUE;
833
834 data = device->ExtraData;
835
836 pa_threaded_mainloop_lock(data->loop);
837
838 spec.format = PA_SAMPLE_S16NE;
839 spec.rate = 44100;
840 spec.channels = 2;
841
842 stream = connect_playback_stream(pulse_name, data->loop, data->context, 0,
843 NULL, &spec, NULL);
844 if(!stream)
845 {
846 pa_threaded_mainloop_unlock(data->loop);
847 goto fail;
848 }
849
850 if(pa_stream_is_suspended(stream))
851 {
852 ERR("Device is suspended\n");
853 pa_stream_disconnect(stream);
854 pa_stream_unref(stream);
855 pa_threaded_mainloop_unlock(data->loop);
856 goto fail;
857 }
858 data->device_name = strdup(pa_stream_get_device_name(stream));
859
860 pa_stream_disconnect(stream);
861 pa_stream_unref(stream);
862
863 pa_threaded_mainloop_unlock(data->loop);
864
865 return ALC_NO_ERROR;
866
867 fail:
868 pulse_close(device);
869 return ALC_INVALID_VALUE;
870 } //}}}
871
872 static void pulse_close_playback(ALCdevice *device) //{{{
873 {
874 pulse_close(device);
875 } //}}}
876
877 static ALCboolean pulse_reset_playback(ALCdevice *device) //{{{
878 {
879 pulse_data *data = device->ExtraData;
880 pa_stream_flags_t flags = 0;
881 pa_channel_map chanmap;
882
883 pa_threaded_mainloop_lock(data->loop);
884
885 if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
886 {
887 pa_operation *o;
888 o = pa_context_get_sink_info_by_name(data->context, data->device_name, sink_info_callback, device);
889 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
890 pa_threaded_mainloop_wait(data->loop);
891 pa_operation_unref(o);
892 }
893 if(!(device->Flags&DEVICE_FREQUENCY_REQUEST))
894 flags |= PA_STREAM_FIX_RATE;
895
896 flags |= PA_STREAM_EARLY_REQUESTS;
897 flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE;
898
899 switch(device->FmtType)
900 {
901 case DevFmtByte:
902 device->FmtType = DevFmtUByte;
903 /* fall-through */
904 case DevFmtUByte:
905 data->spec.format = PA_SAMPLE_U8;
906 break;
907 case DevFmtUShort:
908 device->FmtType = DevFmtShort;
909 /* fall-through */
910 case DevFmtShort:
911 data->spec.format = PA_SAMPLE_S16NE;
912 break;
913 case DevFmtUInt:
914 device->FmtType = DevFmtInt;
915 /* fall-through */
916 case DevFmtInt:
917 data->spec.format = PA_SAMPLE_S32NE;
918 break;
919 case DevFmtFloat:
920 data->spec.format = PA_SAMPLE_FLOAT32NE;
921 break;
922 }
923 data->spec.rate = device->Frequency;
924 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
925
926 if(pa_sample_spec_valid(&data->spec) == 0)
927 {
928 ERR("Invalid sample format\n");
929 pa_threaded_mainloop_unlock(data->loop);
930 return ALC_FALSE;
931 }
932
933 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
934 {
935 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
936 pa_threaded_mainloop_unlock(data->loop);
937 return ALC_FALSE;
938 }
939 SetDefaultWFXChannelOrder(device);
940
941 data->attr.prebuf = -1;
942 data->attr.fragsize = -1;
943 data->attr.minreq = device->UpdateSize * pa_frame_size(&data->spec);
944 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
945 data->attr.maxlength = -1;
946
947 data->stream = connect_playback_stream(data->device_name, data->loop,
948 data->context, flags, &data->attr,
949 &data->spec, &chanmap);
950 if(!data->stream)
951 {
952 pa_threaded_mainloop_unlock(data->loop);
953 return ALC_FALSE;
954 }
955
956 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
957
958 data->spec = *(pa_stream_get_sample_spec(data->stream));
959 if(device->Frequency != data->spec.rate)
960 {
961 size_t frame_size = pa_frame_size(&data->spec);
962 pa_operation *o;
963
964 /* Server updated our playback rate, so modify the buffer attribs
965 * accordingly. */
966 data->attr.minreq = (ALuint64)(data->attr.minreq/frame_size) *
967 data->spec.rate / device->Frequency * frame_size;
968 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
969
970 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
971 stream_success_callback, device);
972 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
973 pa_threaded_mainloop_wait(data->loop);
974 pa_operation_unref(o);
975
976 device->Frequency = data->spec.rate;
977 }
978
979 #if PA_CHECK_VERSION(0,9,15)
980 if(pa_stream_set_buffer_attr_callback)
981 pa_stream_set_buffer_attr_callback(data->stream, stream_buffer_attr_callback, device);
982 #endif
983 pa_stream_set_moved_callback(data->stream, stream_device_callback, device);
984 pa_stream_set_write_callback(data->stream, stream_write_callback, device);
985 pa_stream_set_underflow_callback(data->stream, stream_signal_callback, device);
986
987 data->attr = *(pa_stream_get_buffer_attr(data->stream));
988 device->UpdateSize = data->attr.minreq / pa_frame_size(&data->spec);
989 device->NumUpdates = data->attr.tlength / data->attr.minreq;
990 if(device->NumUpdates <= 1)
991 {
992 pa_operation *o;
993
994 ERR("PulseAudio returned minreq=%d, tlength=%d; expect lag or break up\n", data->attr.minreq, data->attr.tlength);
995
996 /* Server gave a comparatively large minreq, so modify the tlength. */
997 device->NumUpdates = 2;
998 data->attr.tlength = data->attr.minreq * device->NumUpdates;
999
1000 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
1001 stream_success_callback, device);
1002 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1003 pa_threaded_mainloop_wait(data->loop);
1004 pa_operation_unref(o);
1005 }
1006
1007 data->thread = StartThread(PulseProc, device);
1008 if(!data->thread)
1009 {
1010 #if PA_CHECK_VERSION(0,9,15)
1011 if(pa_stream_set_buffer_attr_callback)
1012 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
1013 #endif
1014 pa_stream_set_moved_callback(data->stream, NULL, NULL);
1015 pa_stream_set_write_callback(data->stream, NULL, NULL);
1016 pa_stream_set_underflow_callback(data->stream, NULL, NULL);
1017 pa_stream_disconnect(data->stream);
1018 pa_stream_unref(data->stream);
1019 data->stream = NULL;
1020
1021 pa_threaded_mainloop_unlock(data->loop);
1022 return ALC_FALSE;
1023 }
1024
1025 pa_threaded_mainloop_unlock(data->loop);
1026 return ALC_TRUE;
1027 } //}}}
1028
1029 static void pulse_stop_playback(ALCdevice *device) //{{{
1030 {
1031 pulse_data *data = device->ExtraData;
1032
1033 if(!data->stream)
1034 return;
1035
1036 data->killNow = AL_TRUE;
1037 if(data->thread)
1038 {
1039 pa_threaded_mainloop_signal(data->loop, 0);
1040 StopThread(data->thread);
1041 data->thread = NULL;
1042 }
1043 data->killNow = AL_FALSE;
1044
1045 pa_threaded_mainloop_lock(data->loop);
1046
1047 #if PA_CHECK_VERSION(0,9,15)
1048 if(pa_stream_set_buffer_attr_callback)
1049 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
1050 #endif
1051 pa_stream_set_moved_callback(data->stream, NULL, NULL);
1052 pa_stream_set_write_callback(data->stream, NULL, NULL);
1053 pa_stream_set_underflow_callback(data->stream, NULL, NULL);
1054 pa_stream_disconnect(data->stream);
1055 pa_stream_unref(data->stream);
1056 data->stream = NULL;
1057
1058 pa_threaded_mainloop_unlock(data->loop);
1059 } //}}}
1060
1061
1062 static ALCenum pulse_open_capture(ALCdevice *device, const ALCchar *device_name) //{{{
1063 {
1064 char *pulse_name = NULL;
1065 pulse_data *data;
1066 pa_stream_flags_t flags = 0;
1067 pa_stream_state_t state;
1068 pa_channel_map chanmap;
1069 ALuint samples;
1070
1071 if(!allCaptureDevNameMap)
1072 probe_devices(AL_TRUE);
1073
1074 if(!device_name && numCaptureDevNames > 0)
1075 {
1076 device_name = allCaptureDevNameMap[0].name;
1077 pulse_name = allCaptureDevNameMap[0].device_name;
1078 }
1079 else
1080 {
1081 ALuint i;
1082 for(i = 0;i < numCaptureDevNames;i++)
1083 {
1084 if(strcmp(device_name, allCaptureDevNameMap[i].name) == 0)
1085 {
1086 pulse_name = allCaptureDevNameMap[i].device_name;
1087 break;
1088 }
1089 }
1090 if(i == numCaptureDevNames)
1091 return ALC_INVALID_VALUE;
1092 }
1093
1094 if(pulse_open(device, device_name) == ALC_FALSE)
1095 return ALC_INVALID_VALUE;
1096
1097 data = device->ExtraData;
1098 pa_threaded_mainloop_lock(data->loop);
1099
1100 data->spec.rate = device->Frequency;
1101 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
1102
1103 switch(device->FmtType)
1104 {
1105 case DevFmtUByte:
1106 data->spec.format = PA_SAMPLE_U8;
1107 break;
1108 case DevFmtShort:
1109 data->spec.format = PA_SAMPLE_S16NE;
1110 break;
1111 case DevFmtInt:
1112 data->spec.format = PA_SAMPLE_S32NE;
1113 break;
1114 case DevFmtFloat:
1115 data->spec.format = PA_SAMPLE_FLOAT32NE;
1116 break;
1117 case DevFmtByte:
1118 case DevFmtUShort:
1119 case DevFmtUInt:
1120 ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));
1121 pa_threaded_mainloop_unlock(data->loop);
1122 goto fail;
1123 }
1124
1125 if(pa_sample_spec_valid(&data->spec) == 0)
1126 {
1127 ERR("Invalid sample format\n");
1128 pa_threaded_mainloop_unlock(data->loop);
1129 goto fail;
1130 }
1131
1132 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
1133 {
1134 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
1135 pa_threaded_mainloop_unlock(data->loop);
1136 goto fail;
1137 }
1138
1139 samples = device->UpdateSize * device->NumUpdates;
1140 samples = maxu(samples, 100 * device->Frequency / 1000);
1141
1142 data->attr.minreq = -1;
1143 data->attr.prebuf = -1;
1144 data->attr.maxlength = samples * pa_frame_size(&data->spec);
1145 data->attr.tlength = -1;
1146 data->attr.fragsize = minu(samples, 50*device->Frequency/1000) *
1147 pa_frame_size(&data->spec);
1148
1149 data->stream = pa_stream_new(data->context, "Capture Stream", &data->spec, &chanmap);
1150 if(!data->stream)
1151 {
1152 ERR("pa_stream_new() failed: %s\n",
1153 pa_strerror(pa_context_errno(data->context)));
1154
1155 pa_threaded_mainloop_unlock(data->loop);
1156 goto fail;
1157 }
1158
1159 pa_stream_set_state_callback(data->stream, stream_state_callback, data->loop);
1160
1161 flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
1162 if(pa_stream_connect_record(data->stream, pulse_name, &data->attr, flags) < 0)
1163 {
1164 ERR("Stream did not connect: %s\n",
1165 pa_strerror(pa_context_errno(data->context)));
1166
1167 pa_stream_unref(data->stream);
1168 data->stream = NULL;
1169
1170 pa_threaded_mainloop_unlock(data->loop);
1171 goto fail;
1172 }
1173
1174 while((state=pa_stream_get_state(data->stream)) != PA_STREAM_READY)
1175 {
1176 if(!PA_STREAM_IS_GOOD(state))
1177 {
1178 ERR("Stream did not get ready: %s\n",
1179 pa_strerror(pa_context_errno(data->context)));
1180
1181 pa_stream_unref(data->stream);
1182 data->stream = NULL;
1183
1184 pa_threaded_mainloop_unlock(data->loop);
1185 goto fail;
1186 }
1187
1188 pa_threaded_mainloop_wait(data->loop);
1189 }
1190 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
1191
1192 pa_threaded_mainloop_unlock(data->loop);
1193 return ALC_NO_ERROR;
1194
1195 fail:
1196 pulse_close(device);
1197 return ALC_INVALID_VALUE;
1198 } //}}}
1199
1200 static void pulse_close_capture(ALCdevice *device) //{{{
1201 {
1202 pulse_close(device);
1203 } //}}}
1204
1205 static void pulse_start_capture(ALCdevice *device) //{{{
1206 {
1207 pulse_data *data = device->ExtraData;
1208 pa_operation *o;
1209
1210 pa_threaded_mainloop_lock(data->loop);
1211 o = pa_stream_cork(data->stream, 0, stream_success_callback, device);
1212 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1213 pa_threaded_mainloop_wait(data->loop);
1214 pa_operation_unref(o);
1215 pa_threaded_mainloop_unlock(data->loop);
1216 } //}}}
1217
1218 static void pulse_stop_capture(ALCdevice *device) //{{{
1219 {
1220 pulse_data *data = device->ExtraData;
1221 pa_operation *o;
1222
1223 pa_threaded_mainloop_lock(data->loop);
1224 o = pa_stream_cork(data->stream, 1, stream_success_callback, device);
1225 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1226 pa_threaded_mainloop_wait(data->loop);
1227 pa_operation_unref(o);
1228 pa_threaded_mainloop_unlock(data->loop);
1229 } //}}}
1230
1231 static ALCenum pulse_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint samples) //{{{
1232 {
1233 pulse_data *data = device->ExtraData;
1234 ALCuint todo = samples * pa_frame_size(&data->spec);
1235
1236 pa_threaded_mainloop_lock(data->loop);
1237 /* Capture is done in fragment-sized chunks, so we loop until we get all
1238 * that's available */
1239 data->last_readable -= todo;
1240 while(todo > 0)
1241 {
1242 size_t rem = todo;
1243
1244 if(data->cap_len == 0)
1245 {
1246 pa_stream_state_t state;
1247
1248 state = pa_stream_get_state(data->stream);
1249 if(!PA_STREAM_IS_GOOD(state))
1250 {
1251 aluHandleDisconnect(device);
1252 break;
1253 }
1254 if(pa_stream_peek(data->stream, &data->cap_store, &data->cap_len) < 0)
1255 {
1256 ERR("pa_stream_peek() failed: %s\n",
1257 pa_strerror(pa_context_errno(data->context)));
1258 aluHandleDisconnect(device);
1259 break;
1260 }
1261 data->cap_remain = data->cap_len;
1262 }
1263 if(rem > data->cap_remain)
1264 rem = data->cap_remain;
1265
1266 memcpy(buffer, data->cap_store, rem);
1267
1268 buffer = (ALbyte*)buffer + rem;
1269 todo -= rem;
1270
1271 data->cap_store = (ALbyte*)data->cap_store + rem;
1272 data->cap_remain -= rem;
1273 if(data->cap_remain == 0)
1274 {
1275 pa_stream_drop(data->stream);
1276 data->cap_len = 0;
1277 }
1278 }
1279 if(todo > 0)
1280 memset(buffer, ((device->FmtType==DevFmtUByte) ? 0x80 : 0), todo);
1281 pa_threaded_mainloop_unlock(data->loop);
1282
1283 return ALC_NO_ERROR;
1284 } //}}}
1285
1286 static ALCuint pulse_available_samples(ALCdevice *device) //{{{
1287 {
1288 pulse_data *data = device->ExtraData;
1289 size_t readable = data->cap_remain;
1290
1291 pa_threaded_mainloop_lock(data->loop);
1292 if(device->Connected)
1293 {
1294 ssize_t got = pa_stream_readable_size(data->stream);
1295 if(got > 0 && (size_t)got > data->cap_len)
1296 readable += got - data->cap_len;
1297 }
1298 pa_threaded_mainloop_unlock(data->loop);
1299
1300 if(data->last_readable < readable)
1301 data->last_readable = readable;
1302 return data->last_readable / pa_frame_size(&data->spec);
1303 } //}}}
1304
1305
1306 static const BackendFuncs pulse_funcs = { //{{{
1307 pulse_open_playback,
1308 pulse_close_playback,
1309 pulse_reset_playback,
1310 pulse_stop_playback,
1311 pulse_open_capture,
1312 pulse_close_capture,
1313 pulse_start_capture,
1314 pulse_stop_capture,
1315 pulse_capture_samples,
1316 pulse_available_samples
1317 }; //}}}
1318
1319 ALCboolean alc_pulse_init(BackendFuncs *func_list) //{{{
1320 {
1321 ALCboolean ret = ALC_FALSE;
1322
1323 if(pulse_load())
1324 {
1325 pa_threaded_mainloop *loop;
1326
1327 pulse_ctx_flags = 0;
1328 if(!GetConfigValueBool("pulse", "spawn-server", 0))
1329 pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
1330
1331 if((loop=pa_threaded_mainloop_new()) &&
1332 pa_threaded_mainloop_start(loop) >= 0)
1333 {
1334 pa_context *context;
1335
1336 pa_threaded_mainloop_lock(loop);
1337 context = connect_context(loop, AL_TRUE);
1338 if(context)
1339 {
1340 ret = ALC_TRUE;
1341
1342 pa_context_disconnect(context);
1343 pa_context_unref(context);
1344 }
1345 pa_threaded_mainloop_unlock(loop);
1346 pa_threaded_mainloop_stop(loop);
1347 }
1348 if(loop)
1349 pa_threaded_mainloop_free(loop);
1350 }
1351
1352 if(ret != ALC_FALSE)
1353 *func_list = pulse_funcs;
1354 return ret;
1355 } //}}}
1356
1357 void alc_pulse_deinit(void) //{{{
1358 {
1359 ALuint i;
1360
1361 for(i = 0;i < numDevNames;++i)
1362 {
1363 free(allDevNameMap[i].name);
1364 free(allDevNameMap[i].device_name);
1365 }
1366 free(allDevNameMap);
1367 allDevNameMap = NULL;
1368 numDevNames = 0;
1369
1370 for(i = 0;i < numCaptureDevNames;++i)
1371 {
1372 free(allCaptureDevNameMap[i].name);
1373 free(allCaptureDevNameMap[i].device_name);
1374 }
1375 free(allCaptureDevNameMap);
1376 allCaptureDevNameMap = NULL;
1377 numCaptureDevNames = 0;
1378
1379 #ifdef HAVE_DYNLOAD
1380 if(pa_handle)
1381 CloseLib(pa_handle);
1382 pa_handle = NULL;
1383 #endif
1384 } //}}}
1385
1386 void alc_pulse_probe(enum DevProbe type) //{{{
1387 {
1388 ALuint i;
1389
1390 switch(type)
1391 {
1392 case ALL_DEVICE_PROBE:
1393 for(i = 0;i < numDevNames;++i)
1394 {
1395 free(allDevNameMap[i].name);
1396 free(allDevNameMap[i].device_name);
1397 }
1398 free(allDevNameMap);
1399 allDevNameMap = NULL;
1400 numDevNames = 0;
1401
1402 probe_devices(AL_FALSE);
1403
1404 for(i = 0;i < numDevNames;i++)
1405 AppendAllDeviceList(allDevNameMap[i].name);
1406 break;
1407
1408 case CAPTURE_DEVICE_PROBE:
1409 for(i = 0;i < numCaptureDevNames;++i)
1410 {
1411 free(allCaptureDevNameMap[i].name);
1412 free(allCaptureDevNameMap[i].device_name);
1413 }
1414 free(allCaptureDevNameMap);
1415 allCaptureDevNameMap = NULL;
1416 numCaptureDevNames = 0;
1417
1418 probe_devices(AL_TRUE);
1419
1420 for(i = 0;i < numCaptureDevNames;i++)
1421 AppendCaptureDeviceList(allCaptureDevNameMap[i].name);
1422 break;
1423 }
1424 } //}}}
1425 //}}}
Software OpenAL implementation