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Fix potential divide-by-0
[openal-soft/android.git] / Alc / backends / pulseaudio.c
blobf727b639752a29b97096c209fd4bee0407b96a05
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_stream_drop);
59 MAKE_FUNC(pa_strerror);
60 MAKE_FUNC(pa_context_get_state);
61 MAKE_FUNC(pa_stream_get_state);
62 MAKE_FUNC(pa_threaded_mainloop_signal);
63 MAKE_FUNC(pa_stream_peek);
64 MAKE_FUNC(pa_threaded_mainloop_wait);
65 MAKE_FUNC(pa_threaded_mainloop_unlock);
66 MAKE_FUNC(pa_threaded_mainloop_in_thread);
67 MAKE_FUNC(pa_context_new);
68 MAKE_FUNC(pa_threaded_mainloop_stop);
69 MAKE_FUNC(pa_context_disconnect);
70 MAKE_FUNC(pa_threaded_mainloop_start);
71 MAKE_FUNC(pa_threaded_mainloop_get_api);
72 MAKE_FUNC(pa_context_set_state_callback);
73 MAKE_FUNC(pa_stream_write);
74 MAKE_FUNC(pa_xfree);
75 MAKE_FUNC(pa_stream_connect_record);
76 MAKE_FUNC(pa_stream_connect_playback);
77 MAKE_FUNC(pa_stream_readable_size);
78 MAKE_FUNC(pa_stream_writable_size);
79 MAKE_FUNC(pa_stream_cork);
80 MAKE_FUNC(pa_stream_is_suspended);
81 MAKE_FUNC(pa_stream_get_device_name);
82 MAKE_FUNC(pa_path_get_filename);
83 MAKE_FUNC(pa_get_binary_name);
84 MAKE_FUNC(pa_threaded_mainloop_free);
85 MAKE_FUNC(pa_context_errno);
86 MAKE_FUNC(pa_xmalloc);
87 MAKE_FUNC(pa_stream_unref);
88 MAKE_FUNC(pa_threaded_mainloop_accept);
89 MAKE_FUNC(pa_stream_set_write_callback);
90 MAKE_FUNC(pa_threaded_mainloop_new);
91 MAKE_FUNC(pa_context_connect);
92 MAKE_FUNC(pa_stream_set_buffer_attr);
93 MAKE_FUNC(pa_stream_get_buffer_attr);
94 MAKE_FUNC(pa_stream_get_sample_spec);
95 MAKE_FUNC(pa_stream_get_time);
96 MAKE_FUNC(pa_stream_set_read_callback);
97 MAKE_FUNC(pa_stream_set_state_callback);
98 MAKE_FUNC(pa_stream_set_moved_callback);
99 MAKE_FUNC(pa_stream_set_underflow_callback);
100 MAKE_FUNC(pa_stream_new);
101 MAKE_FUNC(pa_stream_disconnect);
102 MAKE_FUNC(pa_threaded_mainloop_lock);
103 MAKE_FUNC(pa_channel_map_init_auto);
104 MAKE_FUNC(pa_channel_map_parse);
105 MAKE_FUNC(pa_channel_map_snprint);
106 MAKE_FUNC(pa_channel_map_equal);
107 MAKE_FUNC(pa_context_get_server_info);
108 MAKE_FUNC(pa_context_get_sink_info_by_name);
109 MAKE_FUNC(pa_context_get_sink_info_list);
110 MAKE_FUNC(pa_context_get_source_info_list);
111 MAKE_FUNC(pa_operation_get_state);
112 MAKE_FUNC(pa_operation_unref);
113 #if PA_CHECK_VERSION(0,9,15)
114 MAKE_FUNC(pa_channel_map_superset);
115 MAKE_FUNC(pa_stream_set_buffer_attr_callback);
116 #endif
117 #if PA_CHECK_VERSION(0,9,16)
118 MAKE_FUNC(pa_stream_begin_write);
119 #endif
120 #undef MAKE_FUNC
121
122 #define pa_context_unref ppa_context_unref
123 #define pa_sample_spec_valid ppa_sample_spec_valid
124 #define pa_stream_drop ppa_stream_drop
125 #define pa_strerror ppa_strerror
126 #define pa_context_get_state ppa_context_get_state
127 #define pa_stream_get_state ppa_stream_get_state
128 #define pa_threaded_mainloop_signal ppa_threaded_mainloop_signal
129 #define pa_stream_peek ppa_stream_peek
130 #define pa_threaded_mainloop_wait ppa_threaded_mainloop_wait
131 #define pa_threaded_mainloop_unlock ppa_threaded_mainloop_unlock
132 #define pa_threaded_mainloop_in_thread ppa_threaded_mainloop_in_thread
133 #define pa_context_new ppa_context_new
134 #define pa_threaded_mainloop_stop ppa_threaded_mainloop_stop
135 #define pa_context_disconnect ppa_context_disconnect
136 #define pa_threaded_mainloop_start ppa_threaded_mainloop_start
137 #define pa_threaded_mainloop_get_api ppa_threaded_mainloop_get_api
138 #define pa_context_set_state_callback ppa_context_set_state_callback
139 #define pa_stream_write ppa_stream_write
140 #define pa_xfree ppa_xfree
141 #define pa_stream_connect_record ppa_stream_connect_record
142 #define pa_stream_connect_playback ppa_stream_connect_playback
143 #define pa_stream_readable_size ppa_stream_readable_size
144 #define pa_stream_writable_size ppa_stream_writable_size
145 #define pa_stream_cork ppa_stream_cork
146 #define pa_stream_is_suspended ppa_stream_is_suspended
147 #define pa_stream_get_device_name ppa_stream_get_device_name
148 #define pa_path_get_filename ppa_path_get_filename
149 #define pa_get_binary_name ppa_get_binary_name
150 #define pa_threaded_mainloop_free ppa_threaded_mainloop_free
151 #define pa_context_errno ppa_context_errno
152 #define pa_xmalloc ppa_xmalloc
153 #define pa_stream_unref ppa_stream_unref
154 #define pa_threaded_mainloop_accept ppa_threaded_mainloop_accept
155 #define pa_stream_set_write_callback ppa_stream_set_write_callback
156 #define pa_threaded_mainloop_new ppa_threaded_mainloop_new
157 #define pa_context_connect ppa_context_connect
158 #define pa_stream_set_buffer_attr ppa_stream_set_buffer_attr
159 #define pa_stream_get_buffer_attr ppa_stream_get_buffer_attr
160 #define pa_stream_get_sample_spec ppa_stream_get_sample_spec
161 #define pa_stream_get_time ppa_stream_get_time
162 #define pa_stream_set_read_callback ppa_stream_set_read_callback
163 #define pa_stream_set_state_callback ppa_stream_set_state_callback
164 #define pa_stream_set_moved_callback ppa_stream_set_moved_callback
165 #define pa_stream_set_underflow_callback ppa_stream_set_underflow_callback
166 #define pa_stream_new ppa_stream_new
167 #define pa_stream_disconnect ppa_stream_disconnect
168 #define pa_threaded_mainloop_lock ppa_threaded_mainloop_lock
169 #define pa_channel_map_init_auto ppa_channel_map_init_auto
170 #define pa_channel_map_parse ppa_channel_map_parse
171 #define pa_channel_map_snprint ppa_channel_map_snprint
172 #define pa_channel_map_equal ppa_channel_map_equal
173 #define pa_context_get_server_info ppa_context_get_server_info
174 #define pa_context_get_sink_info_by_name ppa_context_get_sink_info_by_name
175 #define pa_context_get_sink_info_list ppa_context_get_sink_info_list
176 #define pa_context_get_source_info_list ppa_context_get_source_info_list
177 #define pa_operation_get_state ppa_operation_get_state
178 #define pa_operation_unref ppa_operation_unref
179 #if PA_CHECK_VERSION(0,9,15)
180 #define pa_channel_map_superset ppa_channel_map_superset
181 #define pa_stream_set_buffer_attr_callback ppa_stream_set_buffer_attr_callback
182 #endif
183 #if PA_CHECK_VERSION(0,9,16)
184 #define pa_stream_begin_write ppa_stream_begin_write
185 #endif
186
187 #endif
188
189 #ifndef PATH_MAX
190 #define PATH_MAX 4096
191 #endif
192
193 typedef struct {
194 char *device_name;
195
196 ALCuint samples;
197 ALCuint frame_size;
198
199 RingBuffer *ring;
200
201 pa_buffer_attr attr;
202 pa_sample_spec spec;
203
204 pa_threaded_mainloop *loop;
205
206 ALvoid *thread;
207 volatile ALboolean killNow;
208
209 pa_stream *stream;
210 pa_context *context;
211 } pulse_data;
212
213 typedef struct {
214 char *name;
215 char *device_name;
216 } DevMap;
217
218
219 static const ALCchar pulse_device[] = "PulseAudio Default";
220 static DevMap *allDevNameMap;
221 static ALuint numDevNames;
222 static DevMap *allCaptureDevNameMap;
223 static ALuint numCaptureDevNames;
224 static pa_context_flags_t pulse_ctx_flags;
225
226
227 static void context_state_callback(pa_context *context, void *pdata)
228 {
229 pa_threaded_mainloop *loop = pdata;
230 pa_context_state_t state;
231
232 state = pa_context_get_state(context);
233 if(state == PA_CONTEXT_READY || !PA_CONTEXT_IS_GOOD(state))
234 pa_threaded_mainloop_signal(loop, 0);
235 }
236
237 static pa_context *connect_context(pa_threaded_mainloop *loop, ALboolean silent)
238 {
239 const char *name = "OpenAL Soft";
240 char path_name[PATH_MAX];
241 pa_context_state_t state;
242 pa_context *context;
243 int err;
244
245 if(pa_get_binary_name(path_name, sizeof(path_name)))
246 name = pa_path_get_filename(path_name);
247
248 context = pa_context_new(pa_threaded_mainloop_get_api(loop), name);
249 if(!context)
250 {
251 ERR("pa_context_new() failed\n");
252 return NULL;
253 }
254
255 pa_context_set_state_callback(context, context_state_callback, loop);
256
257 if((err=pa_context_connect(context, NULL, pulse_ctx_flags, NULL)) >= 0)
258 {
259 while((state=pa_context_get_state(context)) != PA_CONTEXT_READY)
260 {
261 if(!PA_CONTEXT_IS_GOOD(state))
262 {
263 err = pa_context_errno(context);
264 if(err > 0) err = -err;
265 break;
266 }
267
268 pa_threaded_mainloop_wait(loop);
269 }
270 }
271 pa_context_set_state_callback(context, NULL, NULL);
272
273 if(err < 0)
274 {
275 if(!silent)
276 ERR("Context did not connect: %s\n", pa_strerror(err));
277 pa_context_unref(context);
278 return NULL;
279 }
280
281 return context;
282 }
283
284
285 static ALCboolean pulse_load(void) //{{{
286 {
287 ALCboolean ret = ALC_FALSE;
288 if(!pa_handle)
289 {
290 pa_threaded_mainloop *loop;
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 CloseLib(pa_handle); \
309 pa_handle = NULL; \
310 return ALC_FALSE; \
311 } \
312 } while(0)
313 LOAD_FUNC(pa_context_unref);
314 LOAD_FUNC(pa_sample_spec_valid);
315 LOAD_FUNC(pa_stream_drop);
316 LOAD_FUNC(pa_strerror);
317 LOAD_FUNC(pa_context_get_state);
318 LOAD_FUNC(pa_stream_get_state);
319 LOAD_FUNC(pa_threaded_mainloop_signal);
320 LOAD_FUNC(pa_stream_peek);
321 LOAD_FUNC(pa_threaded_mainloop_wait);
322 LOAD_FUNC(pa_threaded_mainloop_unlock);
323 LOAD_FUNC(pa_threaded_mainloop_in_thread);
324 LOAD_FUNC(pa_context_new);
325 LOAD_FUNC(pa_threaded_mainloop_stop);
326 LOAD_FUNC(pa_context_disconnect);
327 LOAD_FUNC(pa_threaded_mainloop_start);
328 LOAD_FUNC(pa_threaded_mainloop_get_api);
329 LOAD_FUNC(pa_context_set_state_callback);
330 LOAD_FUNC(pa_stream_write);
331 LOAD_FUNC(pa_xfree);
332 LOAD_FUNC(pa_stream_connect_record);
333 LOAD_FUNC(pa_stream_connect_playback);
334 LOAD_FUNC(pa_stream_readable_size);
335 LOAD_FUNC(pa_stream_writable_size);
336 LOAD_FUNC(pa_stream_cork);
337 LOAD_FUNC(pa_stream_is_suspended);
338 LOAD_FUNC(pa_stream_get_device_name);
339 LOAD_FUNC(pa_path_get_filename);
340 LOAD_FUNC(pa_get_binary_name);
341 LOAD_FUNC(pa_threaded_mainloop_free);
342 LOAD_FUNC(pa_context_errno);
343 LOAD_FUNC(pa_xmalloc);
344 LOAD_FUNC(pa_stream_unref);
345 LOAD_FUNC(pa_threaded_mainloop_accept);
346 LOAD_FUNC(pa_stream_set_write_callback);
347 LOAD_FUNC(pa_threaded_mainloop_new);
348 LOAD_FUNC(pa_context_connect);
349 LOAD_FUNC(pa_stream_set_buffer_attr);
350 LOAD_FUNC(pa_stream_get_buffer_attr);
351 LOAD_FUNC(pa_stream_get_sample_spec);
352 LOAD_FUNC(pa_stream_get_time);
353 LOAD_FUNC(pa_stream_set_read_callback);
354 LOAD_FUNC(pa_stream_set_state_callback);
355 LOAD_FUNC(pa_stream_set_moved_callback);
356 LOAD_FUNC(pa_stream_set_underflow_callback);
357 LOAD_FUNC(pa_stream_new);
358 LOAD_FUNC(pa_stream_disconnect);
359 LOAD_FUNC(pa_threaded_mainloop_lock);
360 LOAD_FUNC(pa_channel_map_init_auto);
361 LOAD_FUNC(pa_channel_map_parse);
362 LOAD_FUNC(pa_channel_map_snprint);
363 LOAD_FUNC(pa_channel_map_equal);
364 LOAD_FUNC(pa_context_get_server_info);
365 LOAD_FUNC(pa_context_get_sink_info_by_name);
366 LOAD_FUNC(pa_context_get_sink_info_list);
367 LOAD_FUNC(pa_context_get_source_info_list);
368 LOAD_FUNC(pa_operation_get_state);
369 LOAD_FUNC(pa_operation_unref);
370 #undef LOAD_FUNC
371 #define LOAD_OPTIONAL_FUNC(x) do { \
372 p##x = GetSymbol(pa_handle, #x); \
373 } while(0)
374 #if PA_CHECK_VERSION(0,9,15)
375 LOAD_OPTIONAL_FUNC(pa_channel_map_superset);
376 LOAD_OPTIONAL_FUNC(pa_stream_set_buffer_attr_callback);
377 #endif
378 #if PA_CHECK_VERSION(0,9,16)
379 LOAD_OPTIONAL_FUNC(pa_stream_begin_write);
380 #endif
381 #undef LOAD_OPTIONAL_FUNC
382
383 #else /* HAVE_DYNLOAD */
384 pa_handle = (void*)0xDEADBEEF;
385 #endif
386
387 if((loop=pa_threaded_mainloop_new()) &&
388 pa_threaded_mainloop_start(loop) >= 0)
389 {
390 pa_context *context;
391
392 pa_threaded_mainloop_lock(loop);
393 context = connect_context(loop, AL_TRUE);
394 if(context)
395 {
396 ret = ALC_TRUE;
397
398 pa_context_disconnect(context);
399 pa_context_unref(context);
400 }
401 pa_threaded_mainloop_unlock(loop);
402 pa_threaded_mainloop_stop(loop);
403 }
404 if(loop)
405 pa_threaded_mainloop_free(loop);
406
407 if(!ret)
408 {
409 #ifdef HAVE_DYNLOAD
410 CloseLib(pa_handle);
411 #endif
412 pa_handle = NULL;
413 }
414 }
415 return ret;
416 } //}}}
417
418 // PulseAudio Event Callbacks //{{{
419 static void stream_state_callback(pa_stream *stream, void *pdata) //{{{
420 {
421 pa_threaded_mainloop *loop = pdata;
422 pa_stream_state_t state;
423
424 state = pa_stream_get_state(stream);
425 if(state == PA_STREAM_READY || !PA_STREAM_IS_GOOD(state))
426 pa_threaded_mainloop_signal(loop, 0);
427 }//}}}
428
429 static void stream_signal_callback(pa_stream *stream, void *pdata) //{{{
430 {
431 ALCdevice *Device = pdata;
432 pulse_data *data = Device->ExtraData;
433 (void)stream;
434
435 pa_threaded_mainloop_signal(data->loop, 0);
436 }//}}}
437
438 static void stream_buffer_attr_callback(pa_stream *stream, void *pdata) //{{{
439 {
440 ALCdevice *Device = pdata;
441 pulse_data *data = Device->ExtraData;
442
443 LockDevice(Device);
444
445 data->attr = *(pa_stream_get_buffer_attr(stream));
446 Device->UpdateSize = data->attr.minreq / data->frame_size;
447 Device->NumUpdates = (data->attr.tlength/data->frame_size) / Device->UpdateSize;
448 if(Device->NumUpdates <= 1)
449 {
450 Device->NumUpdates = 1;
451 ERR("PulseAudio returned minreq > tlength/2; expect lag or break up\n");
452 }
453
454 UnlockDevice(Device);
455 }//}}}
456
457 static void stream_device_callback(pa_stream *stream, void *pdata) //{{{
458 {
459 ALCdevice *Device = pdata;
460 pulse_data *data = Device->ExtraData;
461
462 free(data->device_name);
463 data->device_name = strdup(pa_stream_get_device_name(stream));
464 }//}}}
465
466 static void context_state_callback2(pa_context *context, void *pdata) //{{{
467 {
468 ALCdevice *Device = pdata;
469 pulse_data *data = Device->ExtraData;
470
471 if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
472 {
473 ERR("Received context failure!\n");
474 aluHandleDisconnect(Device);
475 }
476 pa_threaded_mainloop_signal(data->loop, 0);
477 }//}}}
478
479 static void stream_state_callback2(pa_stream *stream, void *pdata) //{{{
480 {
481 ALCdevice *Device = pdata;
482 pulse_data *data = Device->ExtraData;
483
484 if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
485 {
486 ERR("Received stream failure!\n");
487 aluHandleDisconnect(Device);
488 }
489 pa_threaded_mainloop_signal(data->loop, 0);
490 }//}}}
491
492 static void stream_success_callback(pa_stream *stream, int success, void *pdata) //{{{
493 {
494 ALCdevice *Device = pdata;
495 pulse_data *data = Device->ExtraData;
496 (void)stream;
497 (void)success;
498
499 pa_threaded_mainloop_signal(data->loop, 0);
500 }//}}}
501
502 static void sink_info_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata) //{{{
503 {
504 ALCdevice *device = pdata;
505 pulse_data *data = device->ExtraData;
506 char chanmap_str[256] = "";
507 const struct {
508 const char *str;
509 enum DevFmtChannels chans;
510 } chanmaps[] = {
511 { "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right",
512 DevFmtX71 },
513 { "front-left,front-right,front-center,lfe,rear-center,side-left,side-right",
514 DevFmtX61 },
515 { "front-left,front-right,front-center,lfe,rear-left,rear-right",
516 DevFmtX51 },
517 { "front-left,front-right,front-center,lfe,side-left,side-right",
518 DevFmtX51Side },
519 { "front-left,front-right,rear-left,rear-right", DevFmtQuad },
520 { "front-left,front-right", DevFmtStereo },
521 { "mono", DevFmtMono },
522 { NULL, 0 }
523 };
524 int i;
525 (void)context;
526
527 if(eol)
528 {
529 pa_threaded_mainloop_signal(data->loop, 0);
530 return;
531 }
532
533 for(i = 0;chanmaps[i].str;i++)
534 {
535 pa_channel_map map;
536 if(!pa_channel_map_parse(&map, chanmaps[i].str))
537 continue;
538
539 if(pa_channel_map_equal(&info->channel_map, &map)
540 #if PA_CHECK_VERSION(0,9,15)
541 || (pa_channel_map_superset &&
542 pa_channel_map_superset(&info->channel_map, &map))
543 #endif
544 )
545 {
546 device->FmtChans = chanmaps[i].chans;
547 return;
548 }
549 }
550
551 pa_channel_map_snprint(chanmap_str, sizeof(chanmap_str), &info->channel_map);
552 ERR("Failed to find format for channel map:\n %s\n", chanmap_str);
553 }//}}}
554
555 static void sink_device_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata) //{{{
556 {
557 pa_threaded_mainloop *loop = pdata;
558 char str[1024];
559 void *temp;
560 int count;
561 ALuint i;
562
563 (void)context;
564
565 if(eol)
566 {
567 pa_threaded_mainloop_signal(loop, 0);
568 return;
569 }
570
571 count = 0;
572 do {
573 if(count == 0)
574 snprintf(str, sizeof(str), "%s", info->description);
575 else
576 snprintf(str, sizeof(str), "%s #%d", info->description, count+1);
577 count++;
578
579 for(i = 0;i < numDevNames;i++)
580 {
581 if(strcmp(str, allDevNameMap[i].name) == 0)
582 break;
583 }
584 } while(i != numDevNames);
585
586 temp = realloc(allDevNameMap, (numDevNames+1) * sizeof(*allDevNameMap));
587 if(temp)
588 {
589 allDevNameMap = temp;
590 allDevNameMap[numDevNames].name = strdup(str);
591 allDevNameMap[numDevNames].device_name = strdup(info->name);
592 numDevNames++;
593 }
594 }//}}}
595
596 static void source_device_callback(pa_context *context, const pa_source_info *info, int eol, void *pdata) //{{{
597 {
598 pa_threaded_mainloop *loop = pdata;
599 char str[1024];
600 void *temp;
601 int count;
602 ALuint i;
603
604 (void)context;
605
606 if(eol)
607 {
608 pa_threaded_mainloop_signal(loop, 0);
609 return;
610 }
611
612 count = 0;
613 do {
614 if(count == 0)
615 snprintf(str, sizeof(str), "%s", info->description);
616 else
617 snprintf(str, sizeof(str), "%s #%d", info->description, count+1);
618 count++;
619
620 for(i = 0;i < numCaptureDevNames;i++)
621 {
622 if(strcmp(str, allCaptureDevNameMap[i].name) == 0)
623 break;
624 }
625 } while(i != numCaptureDevNames);
626
627 temp = realloc(allCaptureDevNameMap, (numCaptureDevNames+1) * sizeof(*allCaptureDevNameMap));
628 if(temp)
629 {
630 allCaptureDevNameMap = temp;
631 allCaptureDevNameMap[numCaptureDevNames].name = strdup(str);
632 allCaptureDevNameMap[numCaptureDevNames].device_name = strdup(info->name);
633 numCaptureDevNames++;
634 }
635 }//}}}
636 //}}}
637
638 // PulseAudio I/O Callbacks //{{{
639 static void stream_write_callback(pa_stream *stream, size_t len, void *pdata) //{{{
640 {
641 ALCdevice *Device = pdata;
642 pulse_data *data = Device->ExtraData;
643 (void)stream;
644 (void)len;
645
646 pa_threaded_mainloop_signal(data->loop, 0);
647 } //}}}
648 //}}}
649
650 static ALuint PulseProc(ALvoid *param)
651 {
652 ALCdevice *Device = param;
653 pulse_data *data = Device->ExtraData;
654 ssize_t len;
655
656 SetRTPriority();
657
658 pa_threaded_mainloop_lock(data->loop);
659 do {
660 len = (Device->Connected ? pa_stream_writable_size(data->stream) : 0);
661 len -= len%(Device->UpdateSize*data->frame_size);
662 if(len == 0)
663 {
664 pa_threaded_mainloop_wait(data->loop);
665 continue;
666 }
667
668 while(len > 0)
669 {
670 size_t newlen = len;
671 void *buf;
672 pa_free_cb_t free_func = NULL;
673
674 #if PA_CHECK_VERSION(0,9,16)
675 if(!pa_stream_begin_write ||
676 pa_stream_begin_write(data->stream, &buf, &newlen) < 0)
677 #endif
678 {
679 buf = pa_xmalloc(newlen);
680 free_func = pa_xfree;
681 }
682 pa_threaded_mainloop_unlock(data->loop);
683
684 aluMixData(Device, buf, newlen/data->frame_size);
685
686 pa_threaded_mainloop_lock(data->loop);
687 pa_stream_write(data->stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
688 len -= newlen;
689 }
690 } while(Device->Connected && !data->killNow);
691 pa_threaded_mainloop_unlock(data->loop);
692
693 return 0;
694 }
695
696 static pa_stream *connect_playback_stream(ALCdevice *device,
697 pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
698 pa_channel_map *chanmap)
699 {
700 pulse_data *data = device->ExtraData;
701 pa_stream_state_t state;
702 pa_stream *stream;
703
704 stream = pa_stream_new(data->context, "Playback Stream", spec, chanmap);
705 if(!stream)
706 {
707 ERR("pa_stream_new() failed: %s\n",
708 pa_strerror(pa_context_errno(data->context)));
709 return NULL;
710 }
711
712 pa_stream_set_state_callback(stream, stream_state_callback, data->loop);
713
714 if(pa_stream_connect_playback(stream, data->device_name, attr, flags, NULL, NULL) < 0)
715 {
716 ERR("Stream did not connect: %s\n",
717 pa_strerror(pa_context_errno(data->context)));
718 pa_stream_unref(stream);
719 return NULL;
720 }
721
722 while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
723 {
724 if(!PA_STREAM_IS_GOOD(state))
725 {
726 ERR("Stream did not get ready: %s\n",
727 pa_strerror(pa_context_errno(data->context)));
728 pa_stream_unref(stream);
729 return NULL;
730 }
731
732 pa_threaded_mainloop_wait(data->loop);
733 }
734 pa_stream_set_state_callback(stream, NULL, NULL);
735
736 return stream;
737 }
738
739 static void probe_devices(ALboolean capture)
740 {
741 pa_threaded_mainloop *loop;
742
743 if(capture == AL_FALSE)
744 allDevNameMap = malloc(sizeof(DevMap) * 1);
745 else
746 allCaptureDevNameMap = malloc(sizeof(DevMap) * 1);
747
748 if((loop=pa_threaded_mainloop_new()) &&
749 pa_threaded_mainloop_start(loop) >= 0)
750 {
751 pa_context *context;
752
753 pa_threaded_mainloop_lock(loop);
754 context = connect_context(loop, AL_FALSE);
755 if(context)
756 {
757 pa_operation *o;
758
759 if(capture == AL_FALSE)
760 o = pa_context_get_sink_info_list(context, sink_device_callback, loop);
761 else
762 o = pa_context_get_source_info_list(context, source_device_callback, loop);
763 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
764 pa_threaded_mainloop_wait(loop);
765 pa_operation_unref(o);
766
767 pa_context_disconnect(context);
768 pa_context_unref(context);
769 }
770 pa_threaded_mainloop_unlock(loop);
771 pa_threaded_mainloop_stop(loop);
772 }
773 if(loop)
774 pa_threaded_mainloop_free(loop);
775 }
776
777
778 static ALCboolean pulse_open(ALCdevice *device, const ALCchar *device_name) //{{{
779 {
780 pulse_data *data = pa_xmalloc(sizeof(pulse_data));
781 memset(data, 0, sizeof(*data));
782
783 if(!(data->loop = pa_threaded_mainloop_new()))
784 {
785 ERR("pa_threaded_mainloop_new() failed!\n");
786 goto out;
787 }
788 if(pa_threaded_mainloop_start(data->loop) < 0)
789 {
790 ERR("pa_threaded_mainloop_start() failed\n");
791 goto out;
792 }
793
794 pa_threaded_mainloop_lock(data->loop);
795 device->ExtraData = data;
796
797 data->context = connect_context(data->loop, AL_FALSE);
798 if(!data->context)
799 {
800 pa_threaded_mainloop_unlock(data->loop);
801 goto out;
802 }
803 pa_context_set_state_callback(data->context, context_state_callback2, device);
804
805 device->szDeviceName = strdup(device_name);
806
807 pa_threaded_mainloop_unlock(data->loop);
808 return ALC_TRUE;
809
810 out:
811 if(data->loop)
812 {
813 pa_threaded_mainloop_stop(data->loop);
814 pa_threaded_mainloop_free(data->loop);
815 }
816
817 device->ExtraData = NULL;
818 pa_xfree(data);
819 return ALC_FALSE;
820 } //}}}
821
822 static void pulse_close(ALCdevice *device) //{{{
823 {
824 pulse_data *data = device->ExtraData;
825
826 pa_threaded_mainloop_lock(data->loop);
827
828 if(data->stream)
829 {
830 pa_stream_disconnect(data->stream);
831 pa_stream_unref(data->stream);
832 }
833
834 pa_context_disconnect(data->context);
835 pa_context_unref(data->context);
836
837 pa_threaded_mainloop_unlock(data->loop);
838
839 pa_threaded_mainloop_stop(data->loop);
840 pa_threaded_mainloop_free(data->loop);
841
842 DestroyRingBuffer(data->ring);
843 free(data->device_name);
844
845 device->ExtraData = NULL;
846 pa_xfree(data);
847 } //}}}
848 //}}}
849
850 // OpenAL {{{
851 static ALCenum pulse_open_playback(ALCdevice *device, const ALCchar *device_name) //{{{
852 {
853 char *pulse_name = NULL;
854 pa_sample_spec spec;
855 pulse_data *data;
856
857 if(!allDevNameMap)
858 probe_devices(AL_FALSE);
859
860 if(!device_name)
861 device_name = pulse_device;
862 else if(strcmp(device_name, pulse_device) != 0)
863 {
864 ALuint i;
865
866 for(i = 0;i < numDevNames;i++)
867 {
868 if(strcmp(device_name, allDevNameMap[i].name) == 0)
869 {
870 pulse_name = allDevNameMap[i].device_name;
871 break;
872 }
873 }
874 if(i == numDevNames)
875 return ALC_INVALID_VALUE;
876 }
877
878 if(pulse_open(device, device_name) == ALC_FALSE)
879 return ALC_INVALID_VALUE;
880
881 data = device->ExtraData;
882
883 pa_threaded_mainloop_lock(data->loop);
884
885 spec.format = PA_SAMPLE_S16NE;
886 spec.rate = 44100;
887 spec.channels = 2;
888
889 data->device_name = pulse_name;
890 pa_stream *stream = connect_playback_stream(device, 0, NULL, &spec, NULL);
891 if(!stream)
892 {
893 pa_threaded_mainloop_unlock(data->loop);
894 goto fail;
895 }
896
897 if(pa_stream_is_suspended(stream))
898 {
899 ERR("Device is suspended\n");
900 pa_stream_disconnect(stream);
901 pa_stream_unref(stream);
902 pa_threaded_mainloop_unlock(data->loop);
903 goto fail;
904 }
905 data->device_name = strdup(pa_stream_get_device_name(stream));
906
907 pa_stream_disconnect(stream);
908 pa_stream_unref(stream);
909
910 pa_threaded_mainloop_unlock(data->loop);
911
912 return ALC_NO_ERROR;
913
914 fail:
915 pulse_close(device);
916 return ALC_INVALID_VALUE;
917 } //}}}
918
919 static void pulse_close_playback(ALCdevice *device) //{{{
920 {
921 pulse_close(device);
922 } //}}}
923
924 static ALCboolean pulse_reset_playback(ALCdevice *device) //{{{
925 {
926 pulse_data *data = device->ExtraData;
927 pa_stream_flags_t flags = 0;
928 pa_channel_map chanmap;
929
930 pa_threaded_mainloop_lock(data->loop);
931
932 if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
933 {
934 pa_operation *o;
935 o = pa_context_get_sink_info_by_name(data->context, data->device_name, sink_info_callback, device);
936 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
937 pa_threaded_mainloop_wait(data->loop);
938 pa_operation_unref(o);
939 }
940 if(!(device->Flags&DEVICE_FREQUENCY_REQUEST))
941 flags |= PA_STREAM_FIX_RATE;
942
943 data->frame_size = FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
944 data->attr.prebuf = -1;
945 data->attr.fragsize = -1;
946 data->attr.minreq = device->UpdateSize * data->frame_size;
947 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
948 data->attr.maxlength = -1;
949 flags |= PA_STREAM_EARLY_REQUESTS;
950 flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE;
951
952 switch(device->FmtType)
953 {
954 case DevFmtByte:
955 device->FmtType = DevFmtUByte;
956 /* fall-through */
957 case DevFmtUByte:
958 data->spec.format = PA_SAMPLE_U8;
959 break;
960 case DevFmtUShort:
961 device->FmtType = DevFmtShort;
962 /* fall-through */
963 case DevFmtShort:
964 data->spec.format = PA_SAMPLE_S16NE;
965 break;
966 case DevFmtFloat:
967 data->spec.format = PA_SAMPLE_FLOAT32NE;
968 break;
969 }
970 data->spec.rate = device->Frequency;
971 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
972
973 if(pa_sample_spec_valid(&data->spec) == 0)
974 {
975 ERR("Invalid sample format\n");
976 pa_threaded_mainloop_unlock(data->loop);
977 return ALC_FALSE;
978 }
979
980 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
981 {
982 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
983 pa_threaded_mainloop_unlock(data->loop);
984 return ALC_FALSE;
985 }
986 SetDefaultWFXChannelOrder(device);
987
988 data->stream = connect_playback_stream(device, flags, &data->attr, &data->spec, &chanmap);
989 if(!data->stream)
990 {
991 pa_threaded_mainloop_unlock(data->loop);
992 return ALC_FALSE;
993 }
994
995 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
996
997 data->spec = *(pa_stream_get_sample_spec(data->stream));
998 if(device->Frequency != data->spec.rate)
999 {
1000 pa_operation *o;
1001
1002 if((device->Flags&DEVICE_FREQUENCY_REQUEST))
1003 ERR("Failed to set frequency %dhz, got %dhz instead\n", device->Frequency, data->spec.rate);
1004 device->Flags &= ~DEVICE_FREQUENCY_REQUEST;
1005
1006 /* Server updated our playback rate, so modify the buffer attribs
1007 * accordingly. */
1008 data->attr.minreq = (ALuint64)(data->attr.minreq/data->frame_size) *
1009 data->spec.rate / device->Frequency * data->frame_size;
1010 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
1011
1012 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
1013 stream_success_callback, device);
1014 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1015 pa_threaded_mainloop_wait(data->loop);
1016 pa_operation_unref(o);
1017
1018 device->Frequency = data->spec.rate;
1019 }
1020
1021 stream_buffer_attr_callback(data->stream, device);
1022 if(device->NumUpdates < 2)
1023 {
1024 pa_operation *o;
1025
1026 /* Server gave a comparatively large minreq, so modify the tlength. */
1027 device->NumUpdates = 2;
1028 data->attr.tlength = data->attr.minreq * device->NumUpdates;
1029
1030 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
1031 stream_success_callback, device);
1032 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1033 pa_threaded_mainloop_wait(data->loop);
1034 pa_operation_unref(o);
1035 }
1036
1037 #if PA_CHECK_VERSION(0,9,15)
1038 if(pa_stream_set_buffer_attr_callback)
1039 pa_stream_set_buffer_attr_callback(data->stream, stream_buffer_attr_callback, device);
1040 #endif
1041 pa_stream_set_moved_callback(data->stream, stream_device_callback, device);
1042 pa_stream_set_write_callback(data->stream, stream_write_callback, device);
1043 pa_stream_set_underflow_callback(data->stream, stream_signal_callback, device);
1044
1045 data->thread = StartThread(PulseProc, device);
1046 if(!data->thread)
1047 {
1048 #if PA_CHECK_VERSION(0,9,15)
1049 if(pa_stream_set_buffer_attr_callback)
1050 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
1051 #endif
1052 pa_stream_set_moved_callback(data->stream, NULL, NULL);
1053 pa_stream_set_write_callback(data->stream, NULL, NULL);
1054 pa_stream_set_underflow_callback(data->stream, NULL, NULL);
1055 pa_stream_disconnect(data->stream);
1056 pa_stream_unref(data->stream);
1057 data->stream = NULL;
1058
1059 pa_threaded_mainloop_unlock(data->loop);
1060 return ALC_FALSE;
1061 }
1062
1063 pa_threaded_mainloop_unlock(data->loop);
1064 return ALC_TRUE;
1065 } //}}}
1066
1067 static void pulse_stop_playback(ALCdevice *device) //{{{
1068 {
1069 pulse_data *data = device->ExtraData;
1070
1071 if(!data->stream)
1072 return;
1073
1074 data->killNow = AL_TRUE;
1075 if(data->thread)
1076 {
1077 pa_threaded_mainloop_signal(data->loop, 0);
1078 StopThread(data->thread);
1079 data->thread = NULL;
1080 }
1081 data->killNow = AL_FALSE;
1082
1083 pa_threaded_mainloop_lock(data->loop);
1084
1085 #if PA_CHECK_VERSION(0,9,15)
1086 if(pa_stream_set_buffer_attr_callback)
1087 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
1088 #endif
1089 pa_stream_set_moved_callback(data->stream, NULL, NULL);
1090 pa_stream_set_write_callback(data->stream, NULL, NULL);
1091 pa_stream_set_underflow_callback(data->stream, NULL, NULL);
1092 pa_stream_disconnect(data->stream);
1093 pa_stream_unref(data->stream);
1094 data->stream = NULL;
1095
1096 pa_threaded_mainloop_unlock(data->loop);
1097 } //}}}
1098
1099
1100 static ALCenum pulse_open_capture(ALCdevice *device, const ALCchar *device_name) //{{{
1101 {
1102 char *pulse_name = NULL;
1103 pulse_data *data;
1104 pa_stream_flags_t flags = 0;
1105 pa_stream_state_t state;
1106 pa_channel_map chanmap;
1107
1108 if(!allCaptureDevNameMap)
1109 probe_devices(AL_TRUE);
1110
1111 if(!device_name)
1112 device_name = pulse_device;
1113 else if(strcmp(device_name, pulse_device) != 0)
1114 {
1115 ALuint i;
1116
1117 for(i = 0;i < numCaptureDevNames;i++)
1118 {
1119 if(strcmp(device_name, allCaptureDevNameMap[i].name) == 0)
1120 {
1121 pulse_name = allCaptureDevNameMap[i].device_name;
1122 break;
1123 }
1124 }
1125 if(i == numCaptureDevNames)
1126 return ALC_INVALID_VALUE;
1127 }
1128
1129 if(pulse_open(device, device_name) == ALC_FALSE)
1130 return ALC_INVALID_VALUE;
1131
1132 data = device->ExtraData;
1133 pa_threaded_mainloop_lock(data->loop);
1134
1135 data->samples = device->UpdateSize * device->NumUpdates;
1136 data->frame_size = FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
1137 data->samples = maxu(data->samples, 100 * device->Frequency / 1000);
1138
1139 if(!(data->ring = CreateRingBuffer(data->frame_size, data->samples)))
1140 {
1141 pa_threaded_mainloop_unlock(data->loop);
1142 goto fail;
1143 }
1144
1145 data->attr.minreq = -1;
1146 data->attr.prebuf = -1;
1147 data->attr.maxlength = data->samples * data->frame_size;
1148 data->attr.tlength = -1;
1149 data->attr.fragsize = minu(data->samples, 50*device->Frequency/1000) *
1150 data->frame_size;
1151
1152 data->spec.rate = device->Frequency;
1153 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
1154
1155 switch(device->FmtType)
1156 {
1157 case DevFmtUByte:
1158 data->spec.format = PA_SAMPLE_U8;
1159 break;
1160 case DevFmtShort:
1161 data->spec.format = PA_SAMPLE_S16NE;
1162 break;
1163 case DevFmtFloat:
1164 data->spec.format = PA_SAMPLE_FLOAT32NE;
1165 break;
1166 case DevFmtByte:
1167 case DevFmtUShort:
1168 ERR("Capture format type %#x capture not supported on PulseAudio\n", device->FmtType);
1169 pa_threaded_mainloop_unlock(data->loop);
1170 goto fail;
1171 }
1172
1173 if(pa_sample_spec_valid(&data->spec) == 0)
1174 {
1175 ERR("Invalid sample format\n");
1176 pa_threaded_mainloop_unlock(data->loop);
1177 goto fail;
1178 }
1179
1180 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
1181 {
1182 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
1183 pa_threaded_mainloop_unlock(data->loop);
1184 goto fail;
1185 }
1186
1187 data->stream = pa_stream_new(data->context, "Capture Stream", &data->spec, &chanmap);
1188 if(!data->stream)
1189 {
1190 ERR("pa_stream_new() failed: %s\n",
1191 pa_strerror(pa_context_errno(data->context)));
1192
1193 pa_threaded_mainloop_unlock(data->loop);
1194 goto fail;
1195 }
1196
1197 pa_stream_set_state_callback(data->stream, stream_state_callback, data->loop);
1198
1199 flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
1200 if(pa_stream_connect_record(data->stream, pulse_name, &data->attr, flags) < 0)
1201 {
1202 ERR("Stream did not connect: %s\n",
1203 pa_strerror(pa_context_errno(data->context)));
1204
1205 pa_stream_unref(data->stream);
1206 data->stream = NULL;
1207
1208 pa_threaded_mainloop_unlock(data->loop);
1209 goto fail;
1210 }
1211
1212 while((state=pa_stream_get_state(data->stream)) != PA_STREAM_READY)
1213 {
1214 if(!PA_STREAM_IS_GOOD(state))
1215 {
1216 ERR("Stream did not get ready: %s\n",
1217 pa_strerror(pa_context_errno(data->context)));
1218
1219 pa_stream_unref(data->stream);
1220 data->stream = NULL;
1221
1222 pa_threaded_mainloop_unlock(data->loop);
1223 goto fail;
1224 }
1225
1226 pa_threaded_mainloop_wait(data->loop);
1227 }
1228 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
1229
1230 pa_threaded_mainloop_unlock(data->loop);
1231 return ALC_NO_ERROR;
1232
1233 fail:
1234 pulse_close(device);
1235 return ALC_INVALID_VALUE;
1236 } //}}}
1237
1238 static void pulse_close_capture(ALCdevice *device) //{{{
1239 {
1240 pulse_close(device);
1241 } //}}}
1242
1243 static void pulse_start_capture(ALCdevice *device) //{{{
1244 {
1245 pulse_data *data = device->ExtraData;
1246 pa_operation *o;
1247
1248 pa_threaded_mainloop_lock(data->loop);
1249 o = pa_stream_cork(data->stream, 0, stream_success_callback, device);
1250 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1251 pa_threaded_mainloop_wait(data->loop);
1252 pa_operation_unref(o);
1253 pa_threaded_mainloop_unlock(data->loop);
1254 } //}}}
1255
1256 static void pulse_stop_capture(ALCdevice *device) //{{{
1257 {
1258 pulse_data *data = device->ExtraData;
1259 pa_operation *o;
1260
1261 pa_threaded_mainloop_lock(data->loop);
1262 o = pa_stream_cork(data->stream, 1, stream_success_callback, device);
1263 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1264 pa_threaded_mainloop_wait(data->loop);
1265 pa_operation_unref(o);
1266 pa_threaded_mainloop_unlock(data->loop);
1267 } //}}}
1268
1269 static ALCenum pulse_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint samples) //{{{
1270 {
1271 pulse_data *data = device->ExtraData;
1272 ReadRingBuffer(data->ring, buffer, samples);
1273 return ALC_NO_ERROR;
1274 } //}}}
1275
1276 static ALCuint pulse_available_samples(ALCdevice *device) //{{{
1277 {
1278 pulse_data *data = device->ExtraData;
1279 size_t samples;
1280
1281 pa_threaded_mainloop_lock(data->loop);
1282 /* Capture is done in fragment-sized chunks, so we loop until we get all
1283 * that's available */
1284 samples = (device->Connected ? pa_stream_readable_size(data->stream) : 0);
1285 while(samples > 0)
1286 {
1287 const void *buf;
1288 size_t length;
1289
1290 if(pa_stream_peek(data->stream, &buf, &length) < 0)
1291 {
1292 ERR("pa_stream_peek() failed: %s\n",
1293 pa_strerror(pa_context_errno(data->context)));
1294 break;
1295 }
1296
1297 WriteRingBuffer(data->ring, buf, length/data->frame_size);
1298 samples -= length;
1299
1300 pa_stream_drop(data->stream);
1301 }
1302 pa_threaded_mainloop_unlock(data->loop);
1303
1304 return RingBufferSize(data->ring);
1305 } //}}}
1306
1307
1308 static const BackendFuncs pulse_funcs = { //{{{
1309 pulse_open_playback,
1310 pulse_close_playback,
1311 pulse_reset_playback,
1312 pulse_stop_playback,
1313 pulse_open_capture,
1314 pulse_close_capture,
1315 pulse_start_capture,
1316 pulse_stop_capture,
1317 pulse_capture_samples,
1318 pulse_available_samples
1319 }; //}}}
1320
1321 ALCboolean alc_pulse_init(BackendFuncs *func_list) //{{{
1322 {
1323 if(!pulse_load())
1324 return ALC_FALSE;
1325
1326 *func_list = pulse_funcs;
1327
1328 pulse_ctx_flags = 0;
1329 if(!GetConfigValueBool("pulse", "spawn-server", 0))
1330 pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
1331
1332 return ALC_TRUE;
1333 } //}}}
1334
1335 void alc_pulse_deinit(void) //{{{
1336 {
1337 ALuint i;
1338
1339 for(i = 0;i < numDevNames;++i)
1340 {
1341 free(allDevNameMap[i].name);
1342 free(allDevNameMap[i].device_name);
1343 }
1344 free(allDevNameMap);
1345 allDevNameMap = NULL;
1346 numDevNames = 0;
1347
1348 for(i = 0;i < numCaptureDevNames;++i)
1349 {
1350 free(allCaptureDevNameMap[i].name);
1351 free(allCaptureDevNameMap[i].device_name);
1352 }
1353 free(allCaptureDevNameMap);
1354 allCaptureDevNameMap = NULL;
1355 numCaptureDevNames = 0;
1356
1357 #ifdef HAVE_DYNLOAD
1358 if(pa_handle)
1359 CloseLib(pa_handle);
1360 pa_handle = NULL;
1361 #endif
1362 } //}}}
1363
1364 void alc_pulse_probe(enum DevProbe type) //{{{
1365 {
1366 pa_threaded_mainloop *loop;
1367 ALuint i;
1368
1369 switch(type)
1370 {
1371 case DEVICE_PROBE:
1372 if((loop=pa_threaded_mainloop_new()) &&
1373 pa_threaded_mainloop_start(loop) >= 0)
1374 {
1375 pa_context *context;
1376
1377 pa_threaded_mainloop_lock(loop);
1378 context = connect_context(loop, AL_FALSE);
1379 if(context)
1380 {
1381 AppendDeviceList(pulse_device);
1382
1383 pa_context_disconnect(context);
1384 pa_context_unref(context);
1385 }
1386 pa_threaded_mainloop_unlock(loop);
1387 pa_threaded_mainloop_stop(loop);
1388 }
1389 if(loop)
1390 pa_threaded_mainloop_free(loop);
1391 break;
1392
1393 case ALL_DEVICE_PROBE:
1394 for(i = 0;i < numDevNames;++i)
1395 {
1396 free(allDevNameMap[i].name);
1397 free(allDevNameMap[i].device_name);
1398 }
1399 free(allDevNameMap);
1400 allDevNameMap = NULL;
1401 numDevNames = 0;
1402
1403 probe_devices(AL_FALSE);
1404
1405 for(i = 0;i < numDevNames;i++)
1406 AppendAllDeviceList(allDevNameMap[i].name);
1407 break;
1408
1409 case CAPTURE_DEVICE_PROBE:
1410 for(i = 0;i < numCaptureDevNames;++i)
1411 {
1412 free(allCaptureDevNameMap[i].name);
1413 free(allCaptureDevNameMap[i].device_name);
1414 }
1415 free(allCaptureDevNameMap);
1416 allCaptureDevNameMap = NULL;
1417 numCaptureDevNames = 0;
1418
1419 probe_devices(AL_TRUE);
1420
1421 for(i = 0;i < numCaptureDevNames;i++)
1422 AppendCaptureDeviceList(allCaptureDevNameMap[i].name);
1423 break;
1424 }
1425 } //}}}
1426 //}}}
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