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Avoid locking PulseAudio's mainloop when starting and stopping capture
[openal-soft.git] / Alc / backends / pulseaudio.c
blobaf44e3def1ad0f8fd8fa7bdc778c1e203e5028d6
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 <string.h>
25
26 #include "alMain.h"
27 #include "alu.h"
28
29 #include <pulse/pulseaudio.h>
30
31 #if PA_API_VERSION == 12
32
33 #ifndef PA_CHECK_VERSION
34 #define PA_CHECK_VERSION(major,minor,micro) \
35 ((PA_MAJOR > (major)) || \
36 (PA_MAJOR == (major) && PA_MINOR > (minor)) || \
37 (PA_MAJOR == (major) && PA_MINOR == (minor) && PA_MICRO >= (micro)))
38 #endif
39
40 #ifdef HAVE_DYNLOAD
41 static void *pa_handle;
42 #define MAKE_FUNC(x) static typeof(x) * p##x
43 MAKE_FUNC(pa_context_unref);
44 MAKE_FUNC(pa_sample_spec_valid);
45 MAKE_FUNC(pa_frame_size);
46 MAKE_FUNC(pa_stream_drop);
47 MAKE_FUNC(pa_strerror);
48 MAKE_FUNC(pa_context_get_state);
49 MAKE_FUNC(pa_stream_get_state);
50 MAKE_FUNC(pa_threaded_mainloop_signal);
51 MAKE_FUNC(pa_stream_peek);
52 MAKE_FUNC(pa_threaded_mainloop_wait);
53 MAKE_FUNC(pa_threaded_mainloop_unlock);
54 MAKE_FUNC(pa_threaded_mainloop_in_thread);
55 MAKE_FUNC(pa_context_new);
56 MAKE_FUNC(pa_threaded_mainloop_stop);
57 MAKE_FUNC(pa_context_disconnect);
58 MAKE_FUNC(pa_threaded_mainloop_start);
59 MAKE_FUNC(pa_threaded_mainloop_get_api);
60 MAKE_FUNC(pa_context_set_state_callback);
61 MAKE_FUNC(pa_stream_write);
62 MAKE_FUNC(pa_xfree);
63 MAKE_FUNC(pa_stream_connect_record);
64 MAKE_FUNC(pa_stream_connect_playback);
65 MAKE_FUNC(pa_stream_readable_size);
66 MAKE_FUNC(pa_stream_writable_size);
67 MAKE_FUNC(pa_stream_is_corked);
68 MAKE_FUNC(pa_stream_cork);
69 MAKE_FUNC(pa_stream_is_suspended);
70 MAKE_FUNC(pa_stream_get_device_name);
71 MAKE_FUNC(pa_stream_get_latency);
72 MAKE_FUNC(pa_path_get_filename);
73 MAKE_FUNC(pa_get_binary_name);
74 MAKE_FUNC(pa_threaded_mainloop_free);
75 MAKE_FUNC(pa_context_errno);
76 MAKE_FUNC(pa_xmalloc);
77 MAKE_FUNC(pa_stream_unref);
78 MAKE_FUNC(pa_threaded_mainloop_accept);
79 MAKE_FUNC(pa_stream_set_write_callback);
80 MAKE_FUNC(pa_threaded_mainloop_new);
81 MAKE_FUNC(pa_context_connect);
82 MAKE_FUNC(pa_stream_set_buffer_attr);
83 MAKE_FUNC(pa_stream_get_buffer_attr);
84 MAKE_FUNC(pa_stream_get_sample_spec);
85 MAKE_FUNC(pa_stream_get_time);
86 MAKE_FUNC(pa_stream_set_read_callback);
87 MAKE_FUNC(pa_stream_set_state_callback);
88 MAKE_FUNC(pa_stream_set_moved_callback);
89 MAKE_FUNC(pa_stream_set_underflow_callback);
90 MAKE_FUNC(pa_stream_new_with_proplist);
91 MAKE_FUNC(pa_stream_disconnect);
92 MAKE_FUNC(pa_threaded_mainloop_lock);
93 MAKE_FUNC(pa_channel_map_init_auto);
94 MAKE_FUNC(pa_channel_map_parse);
95 MAKE_FUNC(pa_channel_map_snprint);
96 MAKE_FUNC(pa_channel_map_equal);
97 MAKE_FUNC(pa_context_get_server_info);
98 MAKE_FUNC(pa_context_get_sink_info_by_name);
99 MAKE_FUNC(pa_context_get_sink_info_list);
100 MAKE_FUNC(pa_context_get_source_info_by_name);
101 MAKE_FUNC(pa_context_get_source_info_list);
102 MAKE_FUNC(pa_operation_get_state);
103 MAKE_FUNC(pa_operation_unref);
104 MAKE_FUNC(pa_proplist_new);
105 MAKE_FUNC(pa_proplist_free);
106 MAKE_FUNC(pa_proplist_set);
107 #if PA_CHECK_VERSION(0,9,15)
108 MAKE_FUNC(pa_channel_map_superset);
109 MAKE_FUNC(pa_stream_set_buffer_attr_callback);
110 #endif
111 #if PA_CHECK_VERSION(0,9,16)
112 MAKE_FUNC(pa_stream_begin_write);
113 #endif
114 #undef MAKE_FUNC
115
116 #define pa_context_unref ppa_context_unref
117 #define pa_sample_spec_valid ppa_sample_spec_valid
118 #define pa_frame_size ppa_frame_size
119 #define pa_stream_drop ppa_stream_drop
120 #define pa_strerror ppa_strerror
121 #define pa_context_get_state ppa_context_get_state
122 #define pa_stream_get_state ppa_stream_get_state
123 #define pa_threaded_mainloop_signal ppa_threaded_mainloop_signal
124 #define pa_stream_peek ppa_stream_peek
125 #define pa_threaded_mainloop_wait ppa_threaded_mainloop_wait
126 #define pa_threaded_mainloop_unlock ppa_threaded_mainloop_unlock
127 #define pa_threaded_mainloop_in_thread ppa_threaded_mainloop_in_thread
128 #define pa_context_new ppa_context_new
129 #define pa_threaded_mainloop_stop ppa_threaded_mainloop_stop
130 #define pa_context_disconnect ppa_context_disconnect
131 #define pa_threaded_mainloop_start ppa_threaded_mainloop_start
132 #define pa_threaded_mainloop_get_api ppa_threaded_mainloop_get_api
133 #define pa_context_set_state_callback ppa_context_set_state_callback
134 #define pa_stream_write ppa_stream_write
135 #define pa_xfree ppa_xfree
136 #define pa_stream_connect_record ppa_stream_connect_record
137 #define pa_stream_connect_playback ppa_stream_connect_playback
138 #define pa_stream_readable_size ppa_stream_readable_size
139 #define pa_stream_writable_size ppa_stream_writable_size
140 #define pa_stream_is_corked ppa_stream_is_corked
141 #define pa_stream_cork ppa_stream_cork
142 #define pa_stream_is_suspended ppa_stream_is_suspended
143 #define pa_stream_get_device_name ppa_stream_get_device_name
144 #define pa_stream_get_latency ppa_stream_get_latency
145 #define pa_path_get_filename ppa_path_get_filename
146 #define pa_get_binary_name ppa_get_binary_name
147 #define pa_threaded_mainloop_free ppa_threaded_mainloop_free
148 #define pa_context_errno ppa_context_errno
149 #define pa_xmalloc ppa_xmalloc
150 #define pa_stream_unref ppa_stream_unref
151 #define pa_threaded_mainloop_accept ppa_threaded_mainloop_accept
152 #define pa_stream_set_write_callback ppa_stream_set_write_callback
153 #define pa_threaded_mainloop_new ppa_threaded_mainloop_new
154 #define pa_context_connect ppa_context_connect
155 #define pa_stream_set_buffer_attr ppa_stream_set_buffer_attr
156 #define pa_stream_get_buffer_attr ppa_stream_get_buffer_attr
157 #define pa_stream_get_sample_spec ppa_stream_get_sample_spec
158 #define pa_stream_get_time ppa_stream_get_time
159 #define pa_stream_set_read_callback ppa_stream_set_read_callback
160 #define pa_stream_set_state_callback ppa_stream_set_state_callback
161 #define pa_stream_set_moved_callback ppa_stream_set_moved_callback
162 #define pa_stream_set_underflow_callback ppa_stream_set_underflow_callback
163 #define pa_stream_new_with_proplist ppa_stream_new_with_proplist
164 #define pa_stream_disconnect ppa_stream_disconnect
165 #define pa_threaded_mainloop_lock ppa_threaded_mainloop_lock
166 #define pa_channel_map_init_auto ppa_channel_map_init_auto
167 #define pa_channel_map_parse ppa_channel_map_parse
168 #define pa_channel_map_snprint ppa_channel_map_snprint
169 #define pa_channel_map_equal ppa_channel_map_equal
170 #define pa_context_get_server_info ppa_context_get_server_info
171 #define pa_context_get_sink_info_by_name ppa_context_get_sink_info_by_name
172 #define pa_context_get_sink_info_list ppa_context_get_sink_info_list
173 #define pa_context_get_source_info_by_name ppa_context_get_source_info_by_name
174 #define pa_context_get_source_info_list ppa_context_get_source_info_list
175 #define pa_operation_get_state ppa_operation_get_state
176 #define pa_operation_unref ppa_operation_unref
177 #define pa_proplist_new ppa_proplist_new
178 #define pa_proplist_free ppa_proplist_free
179 #define pa_proplist_set ppa_proplist_set
180 #if PA_CHECK_VERSION(0,9,15)
181 #define pa_channel_map_superset ppa_channel_map_superset
182 #define pa_stream_set_buffer_attr_callback ppa_stream_set_buffer_attr_callback
183 #endif
184 #if PA_CHECK_VERSION(0,9,16)
185 #define pa_stream_begin_write ppa_stream_begin_write
186 #endif
187
188 #endif
189
190 #ifndef PATH_MAX
191 #define PATH_MAX 4096
192 #endif
193
194 typedef struct {
195 char *device_name;
196
197 const void *cap_store;
198 size_t cap_len;
199 size_t cap_remain;
200
201 ALCuint last_readable;
202
203 pa_buffer_attr attr;
204 pa_sample_spec spec;
205
206 pa_threaded_mainloop *loop;
207
208 ALvoid *thread;
209 volatile ALboolean killNow;
210
211 pa_stream *stream;
212 pa_context *context;
213 } pulse_data;
214
215 typedef struct {
216 char *name;
217 char *device_name;
218 } DevMap;
219
220
221 static DevMap *allDevNameMap;
222 static ALuint numDevNames;
223 static DevMap *allCaptureDevNameMap;
224 static ALuint numCaptureDevNames;
225 static pa_context_flags_t pulse_ctx_flags;
226 static pa_proplist *prop_filter;
227
228
229 static ALCboolean pulse_load(void)
230 {
231 ALCboolean ret = ALC_TRUE;
232 #ifdef HAVE_DYNLOAD
233 if(!pa_handle)
234 {
235 #ifdef _WIN32
236 #define PALIB "libpulse-0.dll"
237 #elif defined(__APPLE__) && defined(__MACH__)
238 #define PALIB "libpulse.0.dylib"
239 #else
240 #define PALIB "libpulse.so.0"
241 #endif
242 pa_handle = LoadLib(PALIB);
243 if(!pa_handle)
244 return ALC_FALSE;
245
246 #define LOAD_FUNC(x) do { \
247 p##x = GetSymbol(pa_handle, #x); \
248 if(!(p##x)) { \
249 ret = ALC_FALSE; \
250 } \
251 } while(0)
252 LOAD_FUNC(pa_context_unref);
253 LOAD_FUNC(pa_sample_spec_valid);
254 LOAD_FUNC(pa_stream_drop);
255 LOAD_FUNC(pa_frame_size);
256 LOAD_FUNC(pa_strerror);
257 LOAD_FUNC(pa_context_get_state);
258 LOAD_FUNC(pa_stream_get_state);
259 LOAD_FUNC(pa_threaded_mainloop_signal);
260 LOAD_FUNC(pa_stream_peek);
261 LOAD_FUNC(pa_threaded_mainloop_wait);
262 LOAD_FUNC(pa_threaded_mainloop_unlock);
263 LOAD_FUNC(pa_threaded_mainloop_in_thread);
264 LOAD_FUNC(pa_context_new);
265 LOAD_FUNC(pa_threaded_mainloop_stop);
266 LOAD_FUNC(pa_context_disconnect);
267 LOAD_FUNC(pa_threaded_mainloop_start);
268 LOAD_FUNC(pa_threaded_mainloop_get_api);
269 LOAD_FUNC(pa_context_set_state_callback);
270 LOAD_FUNC(pa_stream_write);
271 LOAD_FUNC(pa_xfree);
272 LOAD_FUNC(pa_stream_connect_record);
273 LOAD_FUNC(pa_stream_connect_playback);
274 LOAD_FUNC(pa_stream_readable_size);
275 LOAD_FUNC(pa_stream_writable_size);
276 LOAD_FUNC(pa_stream_is_corked);
277 LOAD_FUNC(pa_stream_cork);
278 LOAD_FUNC(pa_stream_is_suspended);
279 LOAD_FUNC(pa_stream_get_device_name);
280 LOAD_FUNC(pa_stream_get_latency);
281 LOAD_FUNC(pa_path_get_filename);
282 LOAD_FUNC(pa_get_binary_name);
283 LOAD_FUNC(pa_threaded_mainloop_free);
284 LOAD_FUNC(pa_context_errno);
285 LOAD_FUNC(pa_xmalloc);
286 LOAD_FUNC(pa_stream_unref);
287 LOAD_FUNC(pa_threaded_mainloop_accept);
288 LOAD_FUNC(pa_stream_set_write_callback);
289 LOAD_FUNC(pa_threaded_mainloop_new);
290 LOAD_FUNC(pa_context_connect);
291 LOAD_FUNC(pa_stream_set_buffer_attr);
292 LOAD_FUNC(pa_stream_get_buffer_attr);
293 LOAD_FUNC(pa_stream_get_sample_spec);
294 LOAD_FUNC(pa_stream_get_time);
295 LOAD_FUNC(pa_stream_set_read_callback);
296 LOAD_FUNC(pa_stream_set_state_callback);
297 LOAD_FUNC(pa_stream_set_moved_callback);
298 LOAD_FUNC(pa_stream_set_underflow_callback);
299 LOAD_FUNC(pa_stream_new_with_proplist);
300 LOAD_FUNC(pa_stream_disconnect);
301 LOAD_FUNC(pa_threaded_mainloop_lock);
302 LOAD_FUNC(pa_channel_map_init_auto);
303 LOAD_FUNC(pa_channel_map_parse);
304 LOAD_FUNC(pa_channel_map_snprint);
305 LOAD_FUNC(pa_channel_map_equal);
306 LOAD_FUNC(pa_context_get_server_info);
307 LOAD_FUNC(pa_context_get_sink_info_by_name);
308 LOAD_FUNC(pa_context_get_sink_info_list);
309 LOAD_FUNC(pa_context_get_source_info_by_name);
310 LOAD_FUNC(pa_context_get_source_info_list);
311 LOAD_FUNC(pa_operation_get_state);
312 LOAD_FUNC(pa_operation_unref);
313 LOAD_FUNC(pa_proplist_new);
314 LOAD_FUNC(pa_proplist_free);
315 LOAD_FUNC(pa_proplist_set);
316 #undef LOAD_FUNC
317 #define LOAD_OPTIONAL_FUNC(x) do { \
318 p##x = GetSymbol(pa_handle, #x); \
319 } while(0)
320 #if PA_CHECK_VERSION(0,9,15)
321 LOAD_OPTIONAL_FUNC(pa_channel_map_superset);
322 LOAD_OPTIONAL_FUNC(pa_stream_set_buffer_attr_callback);
323 #endif
324 #if PA_CHECK_VERSION(0,9,16)
325 LOAD_OPTIONAL_FUNC(pa_stream_begin_write);
326 #endif
327 #undef LOAD_OPTIONAL_FUNC
328
329 if(ret == ALC_FALSE)
330 {
331 CloseLib(pa_handle);
332 pa_handle = NULL;
333 }
334 }
335 #endif /* HAVE_DYNLOAD */
336 return ret;
337 }
338
339 /* PulseAudio Event Callbacks */
340 static void context_state_callback(pa_context *context, void *pdata)
341 {
342 pa_threaded_mainloop *loop = pdata;
343 pa_context_state_t state;
344
345 state = pa_context_get_state(context);
346 if(state == PA_CONTEXT_READY || !PA_CONTEXT_IS_GOOD(state))
347 pa_threaded_mainloop_signal(loop, 0);
348 }
349
350 static void stream_state_callback(pa_stream *stream, void *pdata)
351 {
352 pa_threaded_mainloop *loop = pdata;
353 pa_stream_state_t state;
354
355 state = pa_stream_get_state(stream);
356 if(state == PA_STREAM_READY || !PA_STREAM_IS_GOOD(state))
357 pa_threaded_mainloop_signal(loop, 0);
358 }
359
360 static void stream_buffer_attr_callback(pa_stream *stream, void *pdata)
361 {
362 ALCdevice *device = pdata;
363 pulse_data *data = device->ExtraData;
364
365 data->attr = *pa_stream_get_buffer_attr(stream);
366 TRACE("minreq=%d, tlength=%d, prebuf=%d\n", data->attr.minreq, data->attr.tlength, data->attr.prebuf);
367 }
368
369 static void context_state_callback2(pa_context *context, void *pdata)
370 {
371 ALCdevice *Device = pdata;
372 pulse_data *data = Device->ExtraData;
373
374 if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
375 {
376 ERR("Received context failure!\n");
377 aluHandleDisconnect(Device);
378 }
379 pa_threaded_mainloop_signal(data->loop, 0);
380 }
381
382 static void stream_state_callback2(pa_stream *stream, void *pdata)
383 {
384 ALCdevice *Device = pdata;
385 pulse_data *data = Device->ExtraData;
386
387 if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
388 {
389 ERR("Received stream failure!\n");
390 aluHandleDisconnect(Device);
391 }
392 pa_threaded_mainloop_signal(data->loop, 0);
393 }
394
395 static void stream_success_callback(pa_stream *stream, int success, void *pdata)
396 {
397 ALCdevice *Device = pdata;
398 pulse_data *data = Device->ExtraData;
399 (void)stream;
400 (void)success;
401
402 pa_threaded_mainloop_signal(data->loop, 0);
403 }
404
405 static void sink_info_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata)
406 {
407 ALCdevice *device = pdata;
408 pulse_data *data = device->ExtraData;
409 char chanmap_str[256] = "";
410 const struct {
411 const char *str;
412 enum DevFmtChannels chans;
413 } chanmaps[] = {
414 { "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right",
415 DevFmtX71 },
416 { "front-left,front-right,front-center,lfe,rear-center,side-left,side-right",
417 DevFmtX61 },
418 { "front-left,front-right,front-center,lfe,rear-left,rear-right",
419 DevFmtX51 },
420 { "front-left,front-right,front-center,lfe,side-left,side-right",
421 DevFmtX51Side },
422 { "front-left,front-right,rear-left,rear-right", DevFmtQuad },
423 { "front-left,front-right", DevFmtStereo },
424 { "mono", DevFmtMono },
425 { NULL, 0 }
426 };
427 int i;
428 (void)context;
429
430 if(eol)
431 {
432 pa_threaded_mainloop_signal(data->loop, 0);
433 return;
434 }
435
436 for(i = 0;chanmaps[i].str;i++)
437 {
438 pa_channel_map map;
439 if(!pa_channel_map_parse(&map, chanmaps[i].str))
440 continue;
441
442 if(pa_channel_map_equal(&info->channel_map, &map)
443 #if PA_CHECK_VERSION(0,9,15)
444 || (pa_channel_map_superset &&
445 pa_channel_map_superset(&info->channel_map, &map))
446 #endif
447 )
448 {
449 device->FmtChans = chanmaps[i].chans;
450 return;
451 }
452 }
453
454 pa_channel_map_snprint(chanmap_str, sizeof(chanmap_str), &info->channel_map);
455 ERR("Failed to find format for channel map:\n %s\n", chanmap_str);
456 }
457
458 static void sink_device_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata)
459 {
460 pa_threaded_mainloop *loop = pdata;
461 void *temp;
462 ALuint i;
463
464 (void)context;
465
466 if(eol)
467 {
468 pa_threaded_mainloop_signal(loop, 0);
469 return;
470 }
471
472 for(i = 0;i < numDevNames;i++)
473 {
474 if(strcmp(info->name, allDevNameMap[i].device_name) == 0)
475 return;
476 }
477
478 TRACE("Got device \"%s\", \"%s\"\n", info->description, info->name);
479
480 temp = realloc(allDevNameMap, (numDevNames+1) * sizeof(*allDevNameMap));
481 if(temp)
482 {
483 allDevNameMap = temp;
484 allDevNameMap[numDevNames].name = strdup(info->description);
485 allDevNameMap[numDevNames].device_name = strdup(info->name);
486 numDevNames++;
487 }
488 }
489
490 static void source_device_callback(pa_context *context, const pa_source_info *info, int eol, void *pdata)
491 {
492 pa_threaded_mainloop *loop = pdata;
493 void *temp;
494 ALuint i;
495
496 (void)context;
497
498 if(eol)
499 {
500 pa_threaded_mainloop_signal(loop, 0);
501 return;
502 }
503
504 for(i = 0;i < numCaptureDevNames;i++)
505 {
506 if(strcmp(info->name, allCaptureDevNameMap[i].device_name) == 0)
507 return;
508 }
509
510 TRACE("Got device \"%s\", \"%s\"\n", info->description, info->name);
511
512 temp = realloc(allCaptureDevNameMap, (numCaptureDevNames+1) * sizeof(*allCaptureDevNameMap));
513 if(temp)
514 {
515 allCaptureDevNameMap = temp;
516 allCaptureDevNameMap[numCaptureDevNames].name = strdup(info->description);
517 allCaptureDevNameMap[numCaptureDevNames].device_name = strdup(info->name);
518 numCaptureDevNames++;
519 }
520 }
521
522 static void sink_name_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata)
523 {
524 ALCdevice *device = pdata;
525 pulse_data *data = device->ExtraData;
526 (void)context;
527
528 if(eol)
529 {
530 pa_threaded_mainloop_signal(data->loop, 0);
531 return;
532 }
533
534 free(device->DeviceName);
535 device->DeviceName = strdup(info->description);
536 }
537
538 static void source_name_callback(pa_context *context, const pa_source_info *info, int eol, void *pdata)
539 {
540 ALCdevice *device = pdata;
541 pulse_data *data = device->ExtraData;
542 (void)context;
543
544 if(eol)
545 {
546 pa_threaded_mainloop_signal(data->loop, 0);
547 return;
548 }
549
550 free(device->DeviceName);
551 device->DeviceName = strdup(info->description);
552 }
553
554
555 static void stream_moved_callback(pa_stream *stream, void *pdata)
556 {
557 ALCdevice *device = pdata;
558 pulse_data *data = device->ExtraData;
559 (void)stream;
560
561 free(data->device_name);
562 data->device_name = strdup(pa_stream_get_device_name(data->stream));
563
564 TRACE("Stream moved to %s\n", data->device_name);
565 }
566
567
568 static pa_context *connect_context(pa_threaded_mainloop *loop, ALboolean silent)
569 {
570 const char *name = "OpenAL Soft";
571 char path_name[PATH_MAX];
572 pa_context_state_t state;
573 pa_context *context;
574 int err;
575
576 if(pa_get_binary_name(path_name, sizeof(path_name)))
577 name = pa_path_get_filename(path_name);
578
579 context = pa_context_new(pa_threaded_mainloop_get_api(loop), name);
580 if(!context)
581 {
582 ERR("pa_context_new() failed\n");
583 return NULL;
584 }
585
586 pa_context_set_state_callback(context, context_state_callback, loop);
587
588 if((err=pa_context_connect(context, NULL, pulse_ctx_flags, NULL)) >= 0)
589 {
590 while((state=pa_context_get_state(context)) != PA_CONTEXT_READY)
591 {
592 if(!PA_CONTEXT_IS_GOOD(state))
593 {
594 err = pa_context_errno(context);
595 if(err > 0) err = -err;
596 break;
597 }
598
599 pa_threaded_mainloop_wait(loop);
600 }
601 }
602 pa_context_set_state_callback(context, NULL, NULL);
603
604 if(err < 0)
605 {
606 if(!silent)
607 ERR("Context did not connect: %s\n", pa_strerror(err));
608 pa_context_unref(context);
609 return NULL;
610 }
611
612 return context;
613 }
614
615 static pa_stream *connect_playback_stream(const char *device_name,
616 pa_threaded_mainloop *loop, pa_context *context,
617 pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
618 pa_channel_map *chanmap)
619 {
620 pa_stream_state_t state;
621 pa_stream *stream;
622
623 stream = pa_stream_new_with_proplist(context, "Playback Stream", spec, chanmap, prop_filter);
624 if(!stream)
625 {
626 ERR("pa_stream_new_with_proplist() failed: %s\n", pa_strerror(pa_context_errno(context)));
627 return NULL;
628 }
629
630 pa_stream_set_state_callback(stream, stream_state_callback, loop);
631
632 if(pa_stream_connect_playback(stream, device_name, attr, flags, NULL, NULL) < 0)
633 {
634 ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
635 pa_stream_unref(stream);
636 return NULL;
637 }
638
639 while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
640 {
641 if(!PA_STREAM_IS_GOOD(state))
642 {
643 ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
644 pa_stream_unref(stream);
645 return NULL;
646 }
647
648 pa_threaded_mainloop_wait(loop);
649 }
650 pa_stream_set_state_callback(stream, NULL, NULL);
651
652 return stream;
653 }
654
655 static pa_stream *connect_record_stream(const char *device_name,
656 pa_threaded_mainloop *loop, pa_context *context,
657 pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
658 pa_channel_map *chanmap)
659 {
660 pa_stream_state_t state;
661 pa_stream *stream;
662
663 stream = pa_stream_new_with_proplist(context, "Capture Stream", spec, chanmap, prop_filter);
664 if(!stream)
665 {
666 ERR("pa_stream_new_with_proplist() failed: %s\n", pa_strerror(pa_context_errno(context)));
667 return NULL;
668 }
669
670 pa_stream_set_state_callback(stream, stream_state_callback, loop);
671
672 if(pa_stream_connect_record(stream, device_name, attr, flags) < 0)
673 {
674 ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
675 pa_stream_unref(stream);
676 return NULL;
677 }
678
679 while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
680 {
681 if(!PA_STREAM_IS_GOOD(state))
682 {
683 ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
684 pa_stream_unref(stream);
685 return NULL;
686 }
687
688 pa_threaded_mainloop_wait(loop);
689 }
690 pa_stream_set_state_callback(stream, NULL, NULL);
691
692 return stream;
693 }
694
695
696 static void wait_for_operation(pa_operation *op, pa_threaded_mainloop *loop)
697 {
698 if(op)
699 {
700 while(pa_operation_get_state(op) == PA_OPERATION_RUNNING)
701 pa_threaded_mainloop_wait(loop);
702 pa_operation_unref(op);
703 }
704 }
705
706
707 static void probe_devices(ALboolean capture)
708 {
709 pa_threaded_mainloop *loop;
710
711 if(capture == AL_FALSE)
712 allDevNameMap = malloc(sizeof(DevMap) * 1);
713 else
714 allCaptureDevNameMap = malloc(sizeof(DevMap) * 1);
715
716 if((loop=pa_threaded_mainloop_new()) &&
717 pa_threaded_mainloop_start(loop) >= 0)
718 {
719 pa_context *context;
720
721 pa_threaded_mainloop_lock(loop);
722 context = connect_context(loop, AL_FALSE);
723 if(context)
724 {
725 pa_operation *o;
726
727 if(capture == AL_FALSE)
728 {
729 pa_stream_flags_t flags;
730 pa_sample_spec spec;
731 pa_stream *stream;
732
733 flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
734 PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
735
736 spec.format = PA_SAMPLE_S16NE;
737 spec.rate = 44100;
738 spec.channels = 2;
739
740 stream = connect_playback_stream(NULL, loop, context, flags,
741 NULL, &spec, NULL);
742 if(stream)
743 {
744 o = pa_context_get_sink_info_by_name(context, pa_stream_get_device_name(stream), sink_device_callback, loop);
745 wait_for_operation(o, loop);
746
747 pa_stream_disconnect(stream);
748 pa_stream_unref(stream);
749 stream = NULL;
750 }
751
752 o = pa_context_get_sink_info_list(context, sink_device_callback, loop);
753 }
754 else
755 {
756 pa_stream_flags_t flags;
757 pa_sample_spec spec;
758 pa_stream *stream;
759
760 flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
761 PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
762
763 spec.format = PA_SAMPLE_S16NE;
764 spec.rate = 44100;
765 spec.channels = 1;
766
767 stream = connect_record_stream(NULL, loop, context, flags,
768 NULL, &spec, NULL);
769 if(stream)
770 {
771 o = pa_context_get_source_info_by_name(context, pa_stream_get_device_name(stream), source_device_callback, loop);
772 wait_for_operation(o, loop);
773
774 pa_stream_disconnect(stream);
775 pa_stream_unref(stream);
776 stream = NULL;
777 }
778
779 o = pa_context_get_source_info_list(context, source_device_callback, loop);
780 }
781 wait_for_operation(o, loop);
782
783 pa_context_disconnect(context);
784 pa_context_unref(context);
785 }
786 pa_threaded_mainloop_unlock(loop);
787 pa_threaded_mainloop_stop(loop);
788 }
789 if(loop)
790 pa_threaded_mainloop_free(loop);
791 }
792
793
794 static ALuint PulseProc(ALvoid *param)
795 {
796 ALCdevice *Device = param;
797 pulse_data *data = Device->ExtraData;
798 ALuint buffer_size;
799 ALint update_size;
800 size_t frame_size;
801 ssize_t len;
802
803 SetRTPriority();
804
805 pa_threaded_mainloop_lock(data->loop);
806 frame_size = pa_frame_size(&data->spec);
807 update_size = Device->UpdateSize * frame_size;
808
809 /* Sanitize buffer metrics, in case we actually have less than what we
810 * asked for. */
811 buffer_size = minu(update_size*Device->NumUpdates, data->attr.tlength);
812 update_size = minu(update_size, buffer_size/2);
813 do {
814 len = pa_stream_writable_size(data->stream) - data->attr.tlength +
815 buffer_size;
816 if(len < update_size)
817 {
818 if(pa_stream_is_corked(data->stream) == 1)
819 {
820 pa_operation *o;
821 o = pa_stream_cork(data->stream, 0, NULL, NULL);
822 if(o) pa_operation_unref(o);
823 }
824 pa_threaded_mainloop_unlock(data->loop);
825 Sleep(1);
826 pa_threaded_mainloop_lock(data->loop);
827 continue;
828 }
829 len -= len%update_size;
830
831 while(len > 0)
832 {
833 size_t newlen = len;
834 void *buf;
835 pa_free_cb_t free_func = NULL;
836
837 #if PA_CHECK_VERSION(0,9,16)
838 if(!pa_stream_begin_write ||
839 pa_stream_begin_write(data->stream, &buf, &newlen) < 0)
840 #endif
841 {
842 buf = pa_xmalloc(newlen);
843 free_func = pa_xfree;
844 }
845
846 aluMixData(Device, buf, newlen/frame_size);
847
848 pa_stream_write(data->stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
849 len -= newlen;
850 }
851 } while(!data->killNow && Device->Connected);
852 pa_threaded_mainloop_unlock(data->loop);
853
854 return 0;
855 }
856
857
858 static ALCboolean pulse_open(ALCdevice *device)
859 {
860 pulse_data *data = pa_xmalloc(sizeof(pulse_data));
861 memset(data, 0, sizeof(*data));
862
863 if(!(data->loop = pa_threaded_mainloop_new()))
864 {
865 ERR("pa_threaded_mainloop_new() failed!\n");
866 goto out;
867 }
868 if(pa_threaded_mainloop_start(data->loop) < 0)
869 {
870 ERR("pa_threaded_mainloop_start() failed\n");
871 goto out;
872 }
873
874 pa_threaded_mainloop_lock(data->loop);
875 device->ExtraData = data;
876
877 data->context = connect_context(data->loop, AL_FALSE);
878 if(!data->context)
879 {
880 pa_threaded_mainloop_unlock(data->loop);
881 goto out;
882 }
883 pa_context_set_state_callback(data->context, context_state_callback2, device);
884
885 pa_threaded_mainloop_unlock(data->loop);
886 return ALC_TRUE;
887
888 out:
889 if(data->loop)
890 {
891 pa_threaded_mainloop_stop(data->loop);
892 pa_threaded_mainloop_free(data->loop);
893 }
894
895 device->ExtraData = NULL;
896 pa_xfree(data);
897 return ALC_FALSE;
898 }
899
900 static void pulse_close(ALCdevice *device)
901 {
902 pulse_data *data = device->ExtraData;
903
904 pa_threaded_mainloop_lock(data->loop);
905
906 if(data->stream)
907 {
908 pa_stream_set_moved_callback(data->stream, NULL, NULL);
909 #if PA_CHECK_VERSION(0,9,15)
910 if(pa_stream_set_buffer_attr_callback)
911 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
912 #endif
913 pa_stream_disconnect(data->stream);
914 pa_stream_unref(data->stream);
915 }
916
917 pa_context_disconnect(data->context);
918 pa_context_unref(data->context);
919
920 pa_threaded_mainloop_unlock(data->loop);
921
922 pa_threaded_mainloop_stop(data->loop);
923 pa_threaded_mainloop_free(data->loop);
924
925 free(data->device_name);
926
927 device->ExtraData = NULL;
928 pa_xfree(data);
929 }
930
931 /* OpenAL */
932 static ALCenum pulse_open_playback(ALCdevice *device, const ALCchar *device_name)
933 {
934 const char *pulse_name = NULL;
935 pa_stream_flags_t flags;
936 pa_sample_spec spec;
937 pulse_data *data;
938 pa_operation *o;
939
940 if(device_name)
941 {
942 ALuint i;
943
944 if(!allDevNameMap)
945 probe_devices(AL_FALSE);
946
947 for(i = 0;i < numDevNames;i++)
948 {
949 if(strcmp(device_name, allDevNameMap[i].name) == 0)
950 {
951 pulse_name = allDevNameMap[i].device_name;
952 break;
953 }
954 }
955 if(i == numDevNames)
956 return ALC_INVALID_VALUE;
957 }
958
959 if(pulse_open(device) == ALC_FALSE)
960 return ALC_INVALID_VALUE;
961
962 data = device->ExtraData;
963 pa_threaded_mainloop_lock(data->loop);
964
965 flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
966 PA_STREAM_FIX_CHANNELS;
967 if(!GetConfigValueBool("pulse", "allow-moves", 0))
968 flags |= PA_STREAM_DONT_MOVE;
969
970 spec.format = PA_SAMPLE_S16NE;
971 spec.rate = 44100;
972 spec.channels = 2;
973
974 data->stream = connect_playback_stream(pulse_name, data->loop, data->context,
975 flags, NULL, &spec, NULL);
976 if(!data->stream)
977 {
978 pa_threaded_mainloop_unlock(data->loop);
979 pulse_close(device);
980 return ALC_INVALID_VALUE;
981 }
982
983 data->device_name = strdup(pa_stream_get_device_name(data->stream));
984 o = pa_context_get_sink_info_by_name(data->context, data->device_name,
985 sink_name_callback, device);
986 wait_for_operation(o, data->loop);
987
988 pa_stream_set_moved_callback(data->stream, stream_moved_callback, device);
989
990 pa_threaded_mainloop_unlock(data->loop);
991
992 return ALC_NO_ERROR;
993 }
994
995 static void pulse_close_playback(ALCdevice *device)
996 {
997 pulse_close(device);
998 }
999
1000 static ALCboolean pulse_reset_playback(ALCdevice *device)
1001 {
1002 pulse_data *data = device->ExtraData;
1003 pa_stream_flags_t flags = 0;
1004 pa_channel_map chanmap;
1005 ALuint len;
1006
1007 pa_threaded_mainloop_lock(data->loop);
1008
1009 if(data->stream)
1010 {
1011 pa_stream_set_moved_callback(data->stream, NULL, NULL);
1012 #if PA_CHECK_VERSION(0,9,15)
1013 if(pa_stream_set_buffer_attr_callback)
1014 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
1015 #endif
1016 pa_stream_disconnect(data->stream);
1017 pa_stream_unref(data->stream);
1018 data->stream = NULL;
1019 }
1020
1021 if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
1022 {
1023 pa_operation *o;
1024 o = pa_context_get_sink_info_by_name(data->context, data->device_name, sink_info_callback, device);
1025 wait_for_operation(o, data->loop);
1026 }
1027 if(!(device->Flags&DEVICE_FREQUENCY_REQUEST))
1028 flags |= PA_STREAM_FIX_RATE;
1029
1030 flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE;
1031 flags |= PA_STREAM_ADJUST_LATENCY;
1032 flags |= PA_STREAM_START_CORKED;
1033 if(!GetConfigValueBool("pulse", "allow-moves", 0))
1034 flags |= PA_STREAM_DONT_MOVE;
1035
1036 switch(device->FmtType)
1037 {
1038 case DevFmtByte:
1039 device->FmtType = DevFmtUByte;
1040 /* fall-through */
1041 case DevFmtUByte:
1042 data->spec.format = PA_SAMPLE_U8;
1043 break;
1044 case DevFmtUShort:
1045 device->FmtType = DevFmtShort;
1046 /* fall-through */
1047 case DevFmtShort:
1048 data->spec.format = PA_SAMPLE_S16NE;
1049 break;
1050 case DevFmtUInt:
1051 device->FmtType = DevFmtInt;
1052 /* fall-through */
1053 case DevFmtInt:
1054 data->spec.format = PA_SAMPLE_S32NE;
1055 break;
1056 case DevFmtFloat:
1057 data->spec.format = PA_SAMPLE_FLOAT32NE;
1058 break;
1059 }
1060 data->spec.rate = device->Frequency;
1061 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
1062
1063 if(pa_sample_spec_valid(&data->spec) == 0)
1064 {
1065 ERR("Invalid sample format\n");
1066 pa_threaded_mainloop_unlock(data->loop);
1067 return ALC_FALSE;
1068 }
1069
1070 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
1071 {
1072 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
1073 pa_threaded_mainloop_unlock(data->loop);
1074 return ALC_FALSE;
1075 }
1076 SetDefaultWFXChannelOrder(device);
1077
1078 data->attr.fragsize = -1;
1079 data->attr.prebuf = 0;
1080 data->attr.minreq = device->UpdateSize * pa_frame_size(&data->spec);
1081 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
1082 data->attr.maxlength = -1;
1083
1084 data->stream = connect_playback_stream(data->device_name, data->loop,
1085 data->context, flags, &data->attr,
1086 &data->spec, &chanmap);
1087 if(!data->stream)
1088 {
1089 pa_threaded_mainloop_unlock(data->loop);
1090 return ALC_FALSE;
1091 }
1092 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
1093
1094 data->spec = *(pa_stream_get_sample_spec(data->stream));
1095 if(device->Frequency != data->spec.rate)
1096 {
1097 pa_operation *o;
1098
1099 /* Server updated our playback rate, so modify the buffer attribs
1100 * accordingly. */
1101 device->NumUpdates = (ALuint)((ALdouble)device->NumUpdates / device->Frequency *
1102 data->spec.rate + 0.5);
1103 data->attr.minreq = device->UpdateSize * pa_frame_size(&data->spec);
1104 data->attr.tlength = data->attr.minreq * clampu(device->NumUpdates, 2, 16);
1105 data->attr.maxlength = -1;
1106 data->attr.prebuf = 0;
1107
1108 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
1109 stream_success_callback, device);
1110 wait_for_operation(o, data->loop);
1111
1112 device->Frequency = data->spec.rate;
1113 }
1114
1115 pa_stream_set_moved_callback(data->stream, stream_moved_callback, device);
1116 #if PA_CHECK_VERSION(0,9,15)
1117 if(pa_stream_set_buffer_attr_callback)
1118 pa_stream_set_buffer_attr_callback(data->stream, stream_buffer_attr_callback, device);
1119 #endif
1120 stream_buffer_attr_callback(data->stream, device);
1121
1122 len = data->attr.minreq / pa_frame_size(&data->spec);
1123 if((CPUCapFlags&CPU_CAP_SSE))
1124 len = (len+3)&~3;
1125 device->NumUpdates = (ALuint)((ALdouble)device->NumUpdates/len*device->UpdateSize + 0.5);
1126 device->NumUpdates = clampu(device->NumUpdates, 2, 16);
1127 device->UpdateSize = len;
1128
1129 pa_threaded_mainloop_unlock(data->loop);
1130 return ALC_TRUE;
1131 }
1132
1133 static ALCboolean pulse_start_playback(ALCdevice *device)
1134 {
1135 pulse_data *data = device->ExtraData;
1136
1137 data->thread = StartThread(PulseProc, device);
1138 if(!data->thread)
1139 return ALC_FALSE;
1140
1141 return ALC_TRUE;
1142 }
1143
1144 static void pulse_stop_playback(ALCdevice *device)
1145 {
1146 pulse_data *data = device->ExtraData;
1147 pa_operation *o;
1148
1149 if(!data->stream)
1150 return;
1151
1152 data->killNow = AL_TRUE;
1153 if(data->thread)
1154 {
1155 StopThread(data->thread);
1156 data->thread = NULL;
1157 }
1158 data->killNow = AL_FALSE;
1159
1160 pa_threaded_mainloop_lock(data->loop);
1161
1162 o = pa_stream_cork(data->stream, 1, stream_success_callback, device);
1163 wait_for_operation(o, data->loop);
1164
1165 pa_threaded_mainloop_unlock(data->loop);
1166 }
1167
1168
1169 static ALCenum pulse_open_capture(ALCdevice *device, const ALCchar *device_name)
1170 {
1171 const char *pulse_name = NULL;
1172 pa_stream_flags_t flags = 0;
1173 pa_channel_map chanmap;
1174 pulse_data *data;
1175 pa_operation *o;
1176 ALuint samples;
1177
1178 if(device_name)
1179 {
1180 ALuint i;
1181
1182 if(!allCaptureDevNameMap)
1183 probe_devices(AL_TRUE);
1184
1185 for(i = 0;i < numCaptureDevNames;i++)
1186 {
1187 if(strcmp(device_name, allCaptureDevNameMap[i].name) == 0)
1188 {
1189 pulse_name = allCaptureDevNameMap[i].device_name;
1190 break;
1191 }
1192 }
1193 if(i == numCaptureDevNames)
1194 return ALC_INVALID_VALUE;
1195 }
1196
1197 if(pulse_open(device) == ALC_FALSE)
1198 return ALC_INVALID_VALUE;
1199
1200 data = device->ExtraData;
1201 pa_threaded_mainloop_lock(data->loop);
1202
1203 data->spec.rate = device->Frequency;
1204 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
1205
1206 switch(device->FmtType)
1207 {
1208 case DevFmtUByte:
1209 data->spec.format = PA_SAMPLE_U8;
1210 break;
1211 case DevFmtShort:
1212 data->spec.format = PA_SAMPLE_S16NE;
1213 break;
1214 case DevFmtInt:
1215 data->spec.format = PA_SAMPLE_S32NE;
1216 break;
1217 case DevFmtFloat:
1218 data->spec.format = PA_SAMPLE_FLOAT32NE;
1219 break;
1220 case DevFmtByte:
1221 case DevFmtUShort:
1222 case DevFmtUInt:
1223 ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));
1224 pa_threaded_mainloop_unlock(data->loop);
1225 goto fail;
1226 }
1227
1228 if(pa_sample_spec_valid(&data->spec) == 0)
1229 {
1230 ERR("Invalid sample format\n");
1231 pa_threaded_mainloop_unlock(data->loop);
1232 goto fail;
1233 }
1234
1235 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
1236 {
1237 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
1238 pa_threaded_mainloop_unlock(data->loop);
1239 goto fail;
1240 }
1241
1242 samples = device->UpdateSize * device->NumUpdates;
1243 samples = maxu(samples, 100 * device->Frequency / 1000);
1244
1245 data->attr.minreq = -1;
1246 data->attr.prebuf = -1;
1247 data->attr.maxlength = samples * pa_frame_size(&data->spec);
1248 data->attr.tlength = -1;
1249 data->attr.fragsize = minu(samples, 50*device->Frequency/1000) *
1250 pa_frame_size(&data->spec);
1251
1252 flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
1253 if(!GetConfigValueBool("pulse", "allow-moves", 0))
1254 flags |= PA_STREAM_DONT_MOVE;
1255
1256 data->stream = connect_record_stream(pulse_name, data->loop, data->context,
1257 flags, &data->attr, &data->spec,
1258 &chanmap);
1259 if(!data->stream)
1260 {
1261 pa_threaded_mainloop_unlock(data->loop);
1262 goto fail;
1263 }
1264 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
1265
1266 data->device_name = strdup(pa_stream_get_device_name(data->stream));
1267 o = pa_context_get_source_info_by_name(data->context, data->device_name,
1268 source_name_callback, device);
1269 wait_for_operation(o, data->loop);
1270
1271 pa_stream_set_moved_callback(data->stream, stream_moved_callback, device);
1272
1273 pa_threaded_mainloop_unlock(data->loop);
1274 return ALC_NO_ERROR;
1275
1276 fail:
1277 pulse_close(device);
1278 return ALC_INVALID_VALUE;
1279 }
1280
1281 static void pulse_close_capture(ALCdevice *device)
1282 {
1283 pulse_close(device);
1284 }
1285
1286 static void pulse_start_capture(ALCdevice *device)
1287 {
1288 pulse_data *data = device->ExtraData;
1289 pa_operation *o;
1290
1291 o = pa_stream_cork(data->stream, 0, stream_success_callback, device);
1292 wait_for_operation(o, data->loop);
1293 }
1294
1295 static void pulse_stop_capture(ALCdevice *device)
1296 {
1297 pulse_data *data = device->ExtraData;
1298 pa_operation *o;
1299
1300 o = pa_stream_cork(data->stream, 1, stream_success_callback, device);
1301 wait_for_operation(o, data->loop);
1302 }
1303
1304 static ALCenum pulse_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint samples)
1305 {
1306 pulse_data *data = device->ExtraData;
1307 ALCuint todo = samples * pa_frame_size(&data->spec);
1308
1309 /* Capture is done in fragment-sized chunks, so we loop until we get all
1310 * that's available */
1311 data->last_readable -= todo;
1312 while(todo > 0)
1313 {
1314 size_t rem = todo;
1315
1316 if(data->cap_len == 0)
1317 {
1318 pa_stream_state_t state;
1319
1320 state = pa_stream_get_state(data->stream);
1321 if(!PA_STREAM_IS_GOOD(state))
1322 {
1323 aluHandleDisconnect(device);
1324 break;
1325 }
1326 if(pa_stream_peek(data->stream, &data->cap_store, &data->cap_len) < 0)
1327 {
1328 ERR("pa_stream_peek() failed: %s\n",
1329 pa_strerror(pa_context_errno(data->context)));
1330 aluHandleDisconnect(device);
1331 break;
1332 }
1333 data->cap_remain = data->cap_len;
1334 }
1335 if(rem > data->cap_remain)
1336 rem = data->cap_remain;
1337
1338 memcpy(buffer, data->cap_store, rem);
1339
1340 buffer = (ALbyte*)buffer + rem;
1341 todo -= rem;
1342
1343 data->cap_store = (ALbyte*)data->cap_store + rem;
1344 data->cap_remain -= rem;
1345 if(data->cap_remain == 0)
1346 {
1347 pa_stream_drop(data->stream);
1348 data->cap_len = 0;
1349 }
1350 }
1351 if(todo > 0)
1352 memset(buffer, ((device->FmtType==DevFmtUByte) ? 0x80 : 0), todo);
1353
1354 return ALC_NO_ERROR;
1355 }
1356
1357 static ALCuint pulse_available_samples(ALCdevice *device)
1358 {
1359 pulse_data *data = device->ExtraData;
1360 size_t readable = data->cap_remain;
1361
1362 if(device->Connected)
1363 {
1364 ssize_t got = pa_stream_readable_size(data->stream);
1365 if(got < 0)
1366 {
1367 ERR("pa_stream_readable_size() failed: %s\n", pa_strerror(got));
1368 aluHandleDisconnect(device);
1369 }
1370 else if((size_t)got > data->cap_len)
1371 readable += got - data->cap_len;
1372 }
1373
1374 if(data->last_readable < readable)
1375 data->last_readable = readable;
1376 return data->last_readable / pa_frame_size(&data->spec);
1377 }
1378
1379
1380 static void pulse_lock(ALCdevice *device)
1381 {
1382 pulse_data *data = device->ExtraData;
1383 pa_threaded_mainloop_lock(data->loop);
1384 }
1385
1386 static void pulse_unlock(ALCdevice *device)
1387 {
1388 pulse_data *data = device->ExtraData;
1389 pa_threaded_mainloop_unlock(data->loop);
1390 }
1391
1392
1393 static ALint64 pulse_get_latency(ALCdevice *device)
1394 {
1395 pulse_data *data = device->ExtraData;
1396 pa_usec_t latency = 0;
1397 int neg;
1398
1399 if(pa_stream_get_latency(data->stream, &latency, &neg) == 0)
1400 {
1401 if(neg)
1402 latency = 0;
1403 return (ALint64)minu64(latency, MAKEU64(0x7fffffff,0xffffffff)/1000) * 1000;
1404 }
1405 ERR("Failed to get stream latency!\n");
1406 return 0;
1407 }
1408
1409
1410 static const BackendFuncs pulse_funcs = {
1411 pulse_open_playback,
1412 pulse_close_playback,
1413 pulse_reset_playback,
1414 pulse_start_playback,
1415 pulse_stop_playback,
1416 pulse_open_capture,
1417 pulse_close_capture,
1418 pulse_start_capture,
1419 pulse_stop_capture,
1420 pulse_capture_samples,
1421 pulse_available_samples,
1422 pulse_lock,
1423 pulse_unlock,
1424 pulse_get_latency
1425 };
1426
1427 ALCboolean alc_pulse_init(BackendFuncs *func_list)
1428 {
1429 ALCboolean ret = ALC_FALSE;
1430
1431 if(pulse_load())
1432 {
1433 pa_threaded_mainloop *loop;
1434
1435 pulse_ctx_flags = 0;
1436 if(!GetConfigValueBool("pulse", "spawn-server", 1))
1437 pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
1438
1439 if((loop=pa_threaded_mainloop_new()) &&
1440 pa_threaded_mainloop_start(loop) >= 0)
1441 {
1442 pa_context *context;
1443
1444 pa_threaded_mainloop_lock(loop);
1445 context = connect_context(loop, AL_TRUE);
1446 if(context)
1447 {
1448 *func_list = pulse_funcs;
1449 ret = ALC_TRUE;
1450
1451 /* Some libraries (Phonon, Qt) set some pulseaudio properties
1452 * through environment variables, which causes all streams in
1453 * the process to inherit them. This attempts to filter those
1454 * properties out by setting them to 0-length data. */
1455 prop_filter = pa_proplist_new();
1456 pa_proplist_set(prop_filter, PA_PROP_MEDIA_ROLE, NULL, 0);
1457 pa_proplist_set(prop_filter, "phonon.streamid", NULL, 0);
1458
1459 pa_context_disconnect(context);
1460 pa_context_unref(context);
1461 }
1462 pa_threaded_mainloop_unlock(loop);
1463 pa_threaded_mainloop_stop(loop);
1464 }
1465 if(loop)
1466 pa_threaded_mainloop_free(loop);
1467 }
1468
1469 return ret;
1470 }
1471
1472 void alc_pulse_deinit(void)
1473 {
1474 ALuint i;
1475
1476 for(i = 0;i < numDevNames;++i)
1477 {
1478 free(allDevNameMap[i].name);
1479 free(allDevNameMap[i].device_name);
1480 }
1481 free(allDevNameMap);
1482 allDevNameMap = NULL;
1483 numDevNames = 0;
1484
1485 for(i = 0;i < numCaptureDevNames;++i)
1486 {
1487 free(allCaptureDevNameMap[i].name);
1488 free(allCaptureDevNameMap[i].device_name);
1489 }
1490 free(allCaptureDevNameMap);
1491 allCaptureDevNameMap = NULL;
1492 numCaptureDevNames = 0;
1493
1494 if(prop_filter)
1495 pa_proplist_free(prop_filter);
1496 prop_filter = NULL;
1497
1498 /* PulseAudio doesn't like being CloseLib'd sometimes */
1499 }
1500
1501 void alc_pulse_probe(enum DevProbe type)
1502 {
1503 ALuint i;
1504
1505 switch(type)
1506 {
1507 case ALL_DEVICE_PROBE:
1508 for(i = 0;i < numDevNames;++i)
1509 {
1510 free(allDevNameMap[i].name);
1511 free(allDevNameMap[i].device_name);
1512 }
1513 free(allDevNameMap);
1514 allDevNameMap = NULL;
1515 numDevNames = 0;
1516
1517 probe_devices(AL_FALSE);
1518
1519 for(i = 0;i < numDevNames;i++)
1520 AppendAllDevicesList(allDevNameMap[i].name);
1521 break;
1522
1523 case CAPTURE_DEVICE_PROBE:
1524 for(i = 0;i < numCaptureDevNames;++i)
1525 {
1526 free(allCaptureDevNameMap[i].name);
1527 free(allCaptureDevNameMap[i].device_name);
1528 }
1529 free(allCaptureDevNameMap);
1530 allCaptureDevNameMap = NULL;
1531 numCaptureDevNames = 0;
1532
1533 probe_devices(AL_TRUE);
1534
1535 for(i = 0;i < numCaptureDevNames;i++)
1536 AppendCaptureDeviceList(allCaptureDevNameMap[i].name);
1537 break;
1538 }
1539 }
1540
1541 #else
1542
1543 #warning "Unsupported API version, backend will be unavailable!"
1544
1545 ALCboolean alc_pulse_init(BackendFuncs *func_list)
1546 { return ALC_FALSE; (void)func_list; }
1547
1548 void alc_pulse_deinit(void)
1549 { }
1550
1551 void alc_pulse_probe(enum DevProbe type)
1552 { (void)type; }
1553
1554 #endif
Software OpenAL implementation