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Avoid passing the ALCdevice to connect_playback_stream
[openal-soft.git] / Alc / backends / pulseaudio.c
blobe80ee0bd6a90b9c45365f495a57896a0588cd8c1
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
529 (void)context;
530
531 if(eol)
532 {
533 pa_threaded_mainloop_signal(loop, 0);
534 return;
535 }
536
537 TRACE("Got device \"%s\", \"%s\"\n", info->description, info->name);
538
539 temp = realloc(allDevNameMap, (numDevNames+1) * sizeof(*allDevNameMap));
540 if(temp)
541 {
542 allDevNameMap = temp;
543 allDevNameMap[numDevNames].name = strdup(info->description);
544 allDevNameMap[numDevNames].device_name = strdup(info->name);
545 numDevNames++;
546 }
547 }//}}}
548
549 static void source_device_callback(pa_context *context, const pa_source_info *info, int eol, void *pdata) //{{{
550 {
551 pa_threaded_mainloop *loop = pdata;
552 void *temp;
553
554 (void)context;
555
556 if(eol)
557 {
558 pa_threaded_mainloop_signal(loop, 0);
559 return;
560 }
561
562 TRACE("Got device \"%s\", \"%s\"\n", info->description, info->name);
563
564 temp = realloc(allCaptureDevNameMap, (numCaptureDevNames+1) * sizeof(*allCaptureDevNameMap));
565 if(temp)
566 {
567 allCaptureDevNameMap = temp;
568 allCaptureDevNameMap[numCaptureDevNames].name = strdup(info->description);
569 allCaptureDevNameMap[numCaptureDevNames].device_name = strdup(info->name);
570 numCaptureDevNames++;
571 }
572 }//}}}
573 //}}}
574
575 // PulseAudio I/O Callbacks //{{{
576 static void stream_write_callback(pa_stream *stream, size_t len, void *pdata) //{{{
577 {
578 ALCdevice *Device = pdata;
579 pulse_data *data = Device->ExtraData;
580 (void)stream;
581 (void)len;
582
583 pa_threaded_mainloop_signal(data->loop, 0);
584 } //}}}
585 //}}}
586
587 static ALuint PulseProc(ALvoid *param)
588 {
589 ALCdevice *Device = param;
590 pulse_data *data = Device->ExtraData;
591 size_t frame_size;
592 size_t len;
593
594 SetRTPriority();
595
596 frame_size = pa_frame_size(&data->spec);
597 pa_threaded_mainloop_lock(data->loop);
598 do {
599 len = pa_stream_writable_size(data->stream);
600 if(len < data->attr.minreq)
601 {
602 pa_threaded_mainloop_wait(data->loop);
603 continue;
604 }
605 len -= len%data->attr.minreq;
606
607 while(len > 0)
608 {
609 size_t newlen = len;
610 void *buf;
611 pa_free_cb_t free_func = NULL;
612
613 #if PA_CHECK_VERSION(0,9,16)
614 if(!pa_stream_begin_write ||
615 pa_stream_begin_write(data->stream, &buf, &newlen) < 0)
616 #endif
617 {
618 buf = pa_xmalloc(newlen);
619 free_func = pa_xfree;
620 }
621 pa_threaded_mainloop_unlock(data->loop);
622
623 aluMixData(Device, buf, newlen/frame_size);
624
625 pa_threaded_mainloop_lock(data->loop);
626 pa_stream_write(data->stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
627 len -= newlen;
628 }
629 } while(!data->killNow && Device->Connected);
630 pa_threaded_mainloop_unlock(data->loop);
631
632 return 0;
633 }
634
635 static pa_stream *connect_playback_stream(const char *device_name,
636 pa_threaded_mainloop *loop, pa_context *context,
637 pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
638 pa_channel_map *chanmap)
639 {
640 pa_stream_state_t state;
641 pa_stream *stream;
642
643 stream = pa_stream_new(context, "Playback Stream", spec, chanmap);
644 if(!stream)
645 {
646 ERR("pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(context)));
647 return NULL;
648 }
649
650 pa_stream_set_state_callback(stream, stream_state_callback, loop);
651
652 if(pa_stream_connect_playback(stream, device_name, attr, flags, NULL, NULL) < 0)
653 {
654 ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
655 pa_stream_unref(stream);
656 return NULL;
657 }
658
659 while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
660 {
661 if(!PA_STREAM_IS_GOOD(state))
662 {
663 ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
664 pa_stream_unref(stream);
665 return NULL;
666 }
667
668 pa_threaded_mainloop_wait(loop);
669 }
670 pa_stream_set_state_callback(stream, NULL, NULL);
671
672 return stream;
673 }
674
675 static void probe_devices(ALboolean capture)
676 {
677 pa_threaded_mainloop *loop;
678
679 if(capture == AL_FALSE)
680 allDevNameMap = malloc(sizeof(DevMap) * 1);
681 else
682 allCaptureDevNameMap = malloc(sizeof(DevMap) * 1);
683
684 if((loop=pa_threaded_mainloop_new()) &&
685 pa_threaded_mainloop_start(loop) >= 0)
686 {
687 pa_context *context;
688
689 pa_threaded_mainloop_lock(loop);
690 context = connect_context(loop, AL_FALSE);
691 if(context)
692 {
693 pa_operation *o;
694
695 if(capture == AL_FALSE)
696 o = pa_context_get_sink_info_list(context, sink_device_callback, loop);
697 else
698 o = pa_context_get_source_info_list(context, source_device_callback, loop);
699 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
700 pa_threaded_mainloop_wait(loop);
701 pa_operation_unref(o);
702
703 pa_context_disconnect(context);
704 pa_context_unref(context);
705 }
706 pa_threaded_mainloop_unlock(loop);
707 pa_threaded_mainloop_stop(loop);
708 }
709 if(loop)
710 pa_threaded_mainloop_free(loop);
711 }
712
713
714 static ALCboolean pulse_open(ALCdevice *device, const ALCchar *device_name) //{{{
715 {
716 pulse_data *data = pa_xmalloc(sizeof(pulse_data));
717 memset(data, 0, sizeof(*data));
718
719 if(!(data->loop = pa_threaded_mainloop_new()))
720 {
721 ERR("pa_threaded_mainloop_new() failed!\n");
722 goto out;
723 }
724 if(pa_threaded_mainloop_start(data->loop) < 0)
725 {
726 ERR("pa_threaded_mainloop_start() failed\n");
727 goto out;
728 }
729
730 pa_threaded_mainloop_lock(data->loop);
731 device->ExtraData = data;
732
733 data->context = connect_context(data->loop, AL_FALSE);
734 if(!data->context)
735 {
736 pa_threaded_mainloop_unlock(data->loop);
737 goto out;
738 }
739 pa_context_set_state_callback(data->context, context_state_callback2, device);
740
741 device->szDeviceName = strdup(device_name);
742
743 pa_threaded_mainloop_unlock(data->loop);
744 return ALC_TRUE;
745
746 out:
747 if(data->loop)
748 {
749 pa_threaded_mainloop_stop(data->loop);
750 pa_threaded_mainloop_free(data->loop);
751 }
752
753 device->ExtraData = NULL;
754 pa_xfree(data);
755 return ALC_FALSE;
756 } //}}}
757
758 static void pulse_close(ALCdevice *device) //{{{
759 {
760 pulse_data *data = device->ExtraData;
761
762 pa_threaded_mainloop_lock(data->loop);
763
764 if(data->stream)
765 {
766 pa_stream_disconnect(data->stream);
767 pa_stream_unref(data->stream);
768 }
769
770 pa_context_disconnect(data->context);
771 pa_context_unref(data->context);
772
773 pa_threaded_mainloop_unlock(data->loop);
774
775 pa_threaded_mainloop_stop(data->loop);
776 pa_threaded_mainloop_free(data->loop);
777
778 free(data->device_name);
779
780 device->ExtraData = NULL;
781 pa_xfree(data);
782 } //}}}
783 //}}}
784
785 // OpenAL {{{
786 static ALCenum pulse_open_playback(ALCdevice *device, const ALCchar *device_name) //{{{
787 {
788 char *pulse_name = NULL;
789 pa_sample_spec spec;
790 pa_stream *stream;
791 pulse_data *data;
792
793 if(!allDevNameMap)
794 probe_devices(AL_FALSE);
795
796 if(!device_name && numDevNames > 0)
797 {
798 device_name = allDevNameMap[0].name;
799 pulse_name = allDevNameMap[0].device_name;
800 }
801 else
802 {
803 ALuint i;
804
805 for(i = 0;i < numDevNames;i++)
806 {
807 if(strcmp(device_name, allDevNameMap[i].name) == 0)
808 {
809 pulse_name = allDevNameMap[i].device_name;
810 break;
811 }
812 }
813 if(i == numDevNames)
814 return ALC_INVALID_VALUE;
815 }
816
817 if(pulse_open(device, device_name) == ALC_FALSE)
818 return ALC_INVALID_VALUE;
819
820 data = device->ExtraData;
821
822 pa_threaded_mainloop_lock(data->loop);
823
824 spec.format = PA_SAMPLE_S16NE;
825 spec.rate = 44100;
826 spec.channels = 2;
827
828 stream = connect_playback_stream(pulse_name, data->loop, data->context, 0,
829 NULL, &spec, NULL);
830 if(!stream)
831 {
832 pa_threaded_mainloop_unlock(data->loop);
833 goto fail;
834 }
835
836 if(pa_stream_is_suspended(stream))
837 {
838 ERR("Device is suspended\n");
839 pa_stream_disconnect(stream);
840 pa_stream_unref(stream);
841 pa_threaded_mainloop_unlock(data->loop);
842 goto fail;
843 }
844 data->device_name = strdup(pa_stream_get_device_name(stream));
845
846 pa_stream_disconnect(stream);
847 pa_stream_unref(stream);
848
849 pa_threaded_mainloop_unlock(data->loop);
850
851 return ALC_NO_ERROR;
852
853 fail:
854 pulse_close(device);
855 return ALC_INVALID_VALUE;
856 } //}}}
857
858 static void pulse_close_playback(ALCdevice *device) //{{{
859 {
860 pulse_close(device);
861 } //}}}
862
863 static ALCboolean pulse_reset_playback(ALCdevice *device) //{{{
864 {
865 pulse_data *data = device->ExtraData;
866 pa_stream_flags_t flags = 0;
867 pa_channel_map chanmap;
868
869 pa_threaded_mainloop_lock(data->loop);
870
871 if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
872 {
873 pa_operation *o;
874 o = pa_context_get_sink_info_by_name(data->context, data->device_name, sink_info_callback, device);
875 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
876 pa_threaded_mainloop_wait(data->loop);
877 pa_operation_unref(o);
878 }
879 if(!(device->Flags&DEVICE_FREQUENCY_REQUEST))
880 flags |= PA_STREAM_FIX_RATE;
881
882 flags |= PA_STREAM_EARLY_REQUESTS;
883 flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE;
884
885 switch(device->FmtType)
886 {
887 case DevFmtByte:
888 device->FmtType = DevFmtUByte;
889 /* fall-through */
890 case DevFmtUByte:
891 data->spec.format = PA_SAMPLE_U8;
892 break;
893 case DevFmtUShort:
894 device->FmtType = DevFmtShort;
895 /* fall-through */
896 case DevFmtShort:
897 data->spec.format = PA_SAMPLE_S16NE;
898 break;
899 case DevFmtUInt:
900 device->FmtType = DevFmtInt;
901 /* fall-through */
902 case DevFmtInt:
903 data->spec.format = PA_SAMPLE_S32NE;
904 break;
905 case DevFmtFloat:
906 data->spec.format = PA_SAMPLE_FLOAT32NE;
907 break;
908 }
909 data->spec.rate = device->Frequency;
910 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
911
912 if(pa_sample_spec_valid(&data->spec) == 0)
913 {
914 ERR("Invalid sample format\n");
915 pa_threaded_mainloop_unlock(data->loop);
916 return ALC_FALSE;
917 }
918
919 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
920 {
921 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
922 pa_threaded_mainloop_unlock(data->loop);
923 return ALC_FALSE;
924 }
925 SetDefaultWFXChannelOrder(device);
926
927 data->attr.prebuf = -1;
928 data->attr.fragsize = -1;
929 data->attr.minreq = device->UpdateSize * pa_frame_size(&data->spec);
930 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
931 data->attr.maxlength = -1;
932
933 data->stream = connect_playback_stream(data->device_name, data->loop,
934 data->context, flags, &data->attr,
935 &data->spec, &chanmap);
936 if(!data->stream)
937 {
938 pa_threaded_mainloop_unlock(data->loop);
939 return ALC_FALSE;
940 }
941
942 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
943
944 data->spec = *(pa_stream_get_sample_spec(data->stream));
945 if(device->Frequency != data->spec.rate)
946 {
947 size_t frame_size = pa_frame_size(&data->spec);
948 pa_operation *o;
949
950 /* Server updated our playback rate, so modify the buffer attribs
951 * accordingly. */
952 data->attr.minreq = (ALuint64)(data->attr.minreq/frame_size) *
953 data->spec.rate / device->Frequency * frame_size;
954 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
955
956 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
957 stream_success_callback, device);
958 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
959 pa_threaded_mainloop_wait(data->loop);
960 pa_operation_unref(o);
961
962 device->Frequency = data->spec.rate;
963 }
964
965 #if PA_CHECK_VERSION(0,9,15)
966 if(pa_stream_set_buffer_attr_callback)
967 pa_stream_set_buffer_attr_callback(data->stream, stream_buffer_attr_callback, device);
968 #endif
969 pa_stream_set_moved_callback(data->stream, stream_device_callback, device);
970 pa_stream_set_write_callback(data->stream, stream_write_callback, device);
971 pa_stream_set_underflow_callback(data->stream, stream_signal_callback, device);
972
973 data->attr = *(pa_stream_get_buffer_attr(data->stream));
974 device->UpdateSize = data->attr.minreq / pa_frame_size(&data->spec);
975 device->NumUpdates = data->attr.tlength / data->attr.minreq;
976 if(device->NumUpdates <= 1)
977 {
978 pa_operation *o;
979
980 ERR("PulseAudio returned minreq=%d, tlength=%d; expect lag or break up\n", data->attr.minreq, data->attr.tlength);
981
982 /* Server gave a comparatively large minreq, so modify the tlength. */
983 device->NumUpdates = 2;
984 data->attr.tlength = data->attr.minreq * device->NumUpdates;
985
986 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
987 stream_success_callback, device);
988 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
989 pa_threaded_mainloop_wait(data->loop);
990 pa_operation_unref(o);
991 }
992
993 data->thread = StartThread(PulseProc, device);
994 if(!data->thread)
995 {
996 #if PA_CHECK_VERSION(0,9,15)
997 if(pa_stream_set_buffer_attr_callback)
998 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
999 #endif
1000 pa_stream_set_moved_callback(data->stream, NULL, NULL);
1001 pa_stream_set_write_callback(data->stream, NULL, NULL);
1002 pa_stream_set_underflow_callback(data->stream, NULL, NULL);
1003 pa_stream_disconnect(data->stream);
1004 pa_stream_unref(data->stream);
1005 data->stream = NULL;
1006
1007 pa_threaded_mainloop_unlock(data->loop);
1008 return ALC_FALSE;
1009 }
1010
1011 pa_threaded_mainloop_unlock(data->loop);
1012 return ALC_TRUE;
1013 } //}}}
1014
1015 static void pulse_stop_playback(ALCdevice *device) //{{{
1016 {
1017 pulse_data *data = device->ExtraData;
1018
1019 if(!data->stream)
1020 return;
1021
1022 data->killNow = AL_TRUE;
1023 if(data->thread)
1024 {
1025 pa_threaded_mainloop_signal(data->loop, 0);
1026 StopThread(data->thread);
1027 data->thread = NULL;
1028 }
1029 data->killNow = AL_FALSE;
1030
1031 pa_threaded_mainloop_lock(data->loop);
1032
1033 #if PA_CHECK_VERSION(0,9,15)
1034 if(pa_stream_set_buffer_attr_callback)
1035 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
1036 #endif
1037 pa_stream_set_moved_callback(data->stream, NULL, NULL);
1038 pa_stream_set_write_callback(data->stream, NULL, NULL);
1039 pa_stream_set_underflow_callback(data->stream, NULL, NULL);
1040 pa_stream_disconnect(data->stream);
1041 pa_stream_unref(data->stream);
1042 data->stream = NULL;
1043
1044 pa_threaded_mainloop_unlock(data->loop);
1045 } //}}}
1046
1047
1048 static ALCenum pulse_open_capture(ALCdevice *device, const ALCchar *device_name) //{{{
1049 {
1050 char *pulse_name = NULL;
1051 pulse_data *data;
1052 pa_stream_flags_t flags = 0;
1053 pa_stream_state_t state;
1054 pa_channel_map chanmap;
1055 ALuint samples;
1056
1057 if(!allCaptureDevNameMap)
1058 probe_devices(AL_TRUE);
1059
1060 if(!device_name && numCaptureDevNames > 0)
1061 {
1062 device_name = allCaptureDevNameMap[0].name;
1063 pulse_name = allCaptureDevNameMap[0].device_name;
1064 }
1065 else
1066 {
1067 ALuint i;
1068 for(i = 0;i < numCaptureDevNames;i++)
1069 {
1070 if(strcmp(device_name, allCaptureDevNameMap[i].name) == 0)
1071 {
1072 pulse_name = allCaptureDevNameMap[i].device_name;
1073 break;
1074 }
1075 }
1076 if(i == numCaptureDevNames)
1077 return ALC_INVALID_VALUE;
1078 }
1079
1080 if(pulse_open(device, device_name) == ALC_FALSE)
1081 return ALC_INVALID_VALUE;
1082
1083 data = device->ExtraData;
1084 pa_threaded_mainloop_lock(data->loop);
1085
1086 data->spec.rate = device->Frequency;
1087 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
1088
1089 switch(device->FmtType)
1090 {
1091 case DevFmtUByte:
1092 data->spec.format = PA_SAMPLE_U8;
1093 break;
1094 case DevFmtShort:
1095 data->spec.format = PA_SAMPLE_S16NE;
1096 break;
1097 case DevFmtInt:
1098 data->spec.format = PA_SAMPLE_S32NE;
1099 break;
1100 case DevFmtFloat:
1101 data->spec.format = PA_SAMPLE_FLOAT32NE;
1102 break;
1103 case DevFmtByte:
1104 case DevFmtUShort:
1105 case DevFmtUInt:
1106 ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));
1107 pa_threaded_mainloop_unlock(data->loop);
1108 goto fail;
1109 }
1110
1111 if(pa_sample_spec_valid(&data->spec) == 0)
1112 {
1113 ERR("Invalid sample format\n");
1114 pa_threaded_mainloop_unlock(data->loop);
1115 goto fail;
1116 }
1117
1118 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
1119 {
1120 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
1121 pa_threaded_mainloop_unlock(data->loop);
1122 goto fail;
1123 }
1124
1125 samples = device->UpdateSize * device->NumUpdates;
1126 samples = maxu(samples, 100 * device->Frequency / 1000);
1127
1128 data->attr.minreq = -1;
1129 data->attr.prebuf = -1;
1130 data->attr.maxlength = samples * pa_frame_size(&data->spec);
1131 data->attr.tlength = -1;
1132 data->attr.fragsize = minu(samples, 50*device->Frequency/1000) *
1133 pa_frame_size(&data->spec);
1134
1135 data->stream = pa_stream_new(data->context, "Capture Stream", &data->spec, &chanmap);
1136 if(!data->stream)
1137 {
1138 ERR("pa_stream_new() failed: %s\n",
1139 pa_strerror(pa_context_errno(data->context)));
1140
1141 pa_threaded_mainloop_unlock(data->loop);
1142 goto fail;
1143 }
1144
1145 pa_stream_set_state_callback(data->stream, stream_state_callback, data->loop);
1146
1147 flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
1148 if(pa_stream_connect_record(data->stream, pulse_name, &data->attr, flags) < 0)
1149 {
1150 ERR("Stream did not connect: %s\n",
1151 pa_strerror(pa_context_errno(data->context)));
1152
1153 pa_stream_unref(data->stream);
1154 data->stream = NULL;
1155
1156 pa_threaded_mainloop_unlock(data->loop);
1157 goto fail;
1158 }
1159
1160 while((state=pa_stream_get_state(data->stream)) != PA_STREAM_READY)
1161 {
1162 if(!PA_STREAM_IS_GOOD(state))
1163 {
1164 ERR("Stream did not get ready: %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 pa_threaded_mainloop_wait(data->loop);
1175 }
1176 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
1177
1178 pa_threaded_mainloop_unlock(data->loop);
1179 return ALC_NO_ERROR;
1180
1181 fail:
1182 pulse_close(device);
1183 return ALC_INVALID_VALUE;
1184 } //}}}
1185
1186 static void pulse_close_capture(ALCdevice *device) //{{{
1187 {
1188 pulse_close(device);
1189 } //}}}
1190
1191 static void pulse_start_capture(ALCdevice *device) //{{{
1192 {
1193 pulse_data *data = device->ExtraData;
1194 pa_operation *o;
1195
1196 pa_threaded_mainloop_lock(data->loop);
1197 o = pa_stream_cork(data->stream, 0, stream_success_callback, device);
1198 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1199 pa_threaded_mainloop_wait(data->loop);
1200 pa_operation_unref(o);
1201 pa_threaded_mainloop_unlock(data->loop);
1202 } //}}}
1203
1204 static void pulse_stop_capture(ALCdevice *device) //{{{
1205 {
1206 pulse_data *data = device->ExtraData;
1207 pa_operation *o;
1208
1209 pa_threaded_mainloop_lock(data->loop);
1210 o = pa_stream_cork(data->stream, 1, stream_success_callback, device);
1211 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1212 pa_threaded_mainloop_wait(data->loop);
1213 pa_operation_unref(o);
1214 pa_threaded_mainloop_unlock(data->loop);
1215 } //}}}
1216
1217 static ALCenum pulse_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint samples) //{{{
1218 {
1219 pulse_data *data = device->ExtraData;
1220 ALCuint todo = samples * pa_frame_size(&data->spec);
1221
1222 pa_threaded_mainloop_lock(data->loop);
1223 /* Capture is done in fragment-sized chunks, so we loop until we get all
1224 * that's available */
1225 data->last_readable -= todo;
1226 while(todo > 0)
1227 {
1228 size_t rem = todo;
1229
1230 if(data->cap_len == 0)
1231 {
1232 pa_stream_state_t state;
1233
1234 state = pa_stream_get_state(data->stream);
1235 if(!PA_STREAM_IS_GOOD(state))
1236 {
1237 aluHandleDisconnect(device);
1238 break;
1239 }
1240 if(pa_stream_peek(data->stream, &data->cap_store, &data->cap_len) < 0)
1241 {
1242 ERR("pa_stream_peek() failed: %s\n",
1243 pa_strerror(pa_context_errno(data->context)));
1244 aluHandleDisconnect(device);
1245 break;
1246 }
1247 data->cap_remain = data->cap_len;
1248 }
1249 if(rem > data->cap_remain)
1250 rem = data->cap_remain;
1251
1252 memcpy(buffer, data->cap_store, rem);
1253
1254 buffer = (ALbyte*)buffer + rem;
1255 todo -= rem;
1256
1257 data->cap_store = (ALbyte*)data->cap_store + rem;
1258 data->cap_remain -= rem;
1259 if(data->cap_remain == 0)
1260 {
1261 pa_stream_drop(data->stream);
1262 data->cap_len = 0;
1263 }
1264 }
1265 if(todo > 0)
1266 memset(buffer, ((device->FmtType==DevFmtUByte) ? 0x80 : 0), todo);
1267 pa_threaded_mainloop_unlock(data->loop);
1268
1269 return ALC_NO_ERROR;
1270 } //}}}
1271
1272 static ALCuint pulse_available_samples(ALCdevice *device) //{{{
1273 {
1274 pulse_data *data = device->ExtraData;
1275 size_t readable = data->cap_remain;
1276
1277 pa_threaded_mainloop_lock(data->loop);
1278 if(device->Connected)
1279 {
1280 ssize_t got = pa_stream_readable_size(data->stream);
1281 if(got > 0 && (size_t)got > data->cap_len)
1282 readable += got - data->cap_len;
1283 }
1284 pa_threaded_mainloop_unlock(data->loop);
1285
1286 if(data->last_readable < readable)
1287 data->last_readable = readable;
1288 return data->last_readable / pa_frame_size(&data->spec);
1289 } //}}}
1290
1291
1292 static const BackendFuncs pulse_funcs = { //{{{
1293 pulse_open_playback,
1294 pulse_close_playback,
1295 pulse_reset_playback,
1296 pulse_stop_playback,
1297 pulse_open_capture,
1298 pulse_close_capture,
1299 pulse_start_capture,
1300 pulse_stop_capture,
1301 pulse_capture_samples,
1302 pulse_available_samples
1303 }; //}}}
1304
1305 ALCboolean alc_pulse_init(BackendFuncs *func_list) //{{{
1306 {
1307 ALCboolean ret = ALC_FALSE;
1308
1309 if(pulse_load())
1310 {
1311 pa_threaded_mainloop *loop;
1312
1313 pulse_ctx_flags = 0;
1314 if(!GetConfigValueBool("pulse", "spawn-server", 0))
1315 pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
1316
1317 if((loop=pa_threaded_mainloop_new()) &&
1318 pa_threaded_mainloop_start(loop) >= 0)
1319 {
1320 pa_context *context;
1321
1322 pa_threaded_mainloop_lock(loop);
1323 context = connect_context(loop, AL_TRUE);
1324 if(context)
1325 {
1326 ret = ALC_TRUE;
1327
1328 pa_context_disconnect(context);
1329 pa_context_unref(context);
1330 }
1331 pa_threaded_mainloop_unlock(loop);
1332 pa_threaded_mainloop_stop(loop);
1333 }
1334 if(loop)
1335 pa_threaded_mainloop_free(loop);
1336 }
1337
1338 if(ret != ALC_FALSE)
1339 *func_list = pulse_funcs;
1340 return ret;
1341 } //}}}
1342
1343 void alc_pulse_deinit(void) //{{{
1344 {
1345 ALuint i;
1346
1347 for(i = 0;i < numDevNames;++i)
1348 {
1349 free(allDevNameMap[i].name);
1350 free(allDevNameMap[i].device_name);
1351 }
1352 free(allDevNameMap);
1353 allDevNameMap = NULL;
1354 numDevNames = 0;
1355
1356 for(i = 0;i < numCaptureDevNames;++i)
1357 {
1358 free(allCaptureDevNameMap[i].name);
1359 free(allCaptureDevNameMap[i].device_name);
1360 }
1361 free(allCaptureDevNameMap);
1362 allCaptureDevNameMap = NULL;
1363 numCaptureDevNames = 0;
1364
1365 #ifdef HAVE_DYNLOAD
1366 if(pa_handle)
1367 CloseLib(pa_handle);
1368 pa_handle = NULL;
1369 #endif
1370 } //}}}
1371
1372 void alc_pulse_probe(enum DevProbe type) //{{{
1373 {
1374 ALuint i;
1375
1376 switch(type)
1377 {
1378 case ALL_DEVICE_PROBE:
1379 for(i = 0;i < numDevNames;++i)
1380 {
1381 free(allDevNameMap[i].name);
1382 free(allDevNameMap[i].device_name);
1383 }
1384 free(allDevNameMap);
1385 allDevNameMap = NULL;
1386 numDevNames = 0;
1387
1388 probe_devices(AL_FALSE);
1389
1390 for(i = 0;i < numDevNames;i++)
1391 AppendAllDeviceList(allDevNameMap[i].name);
1392 break;
1393
1394 case CAPTURE_DEVICE_PROBE:
1395 for(i = 0;i < numCaptureDevNames;++i)
1396 {
1397 free(allCaptureDevNameMap[i].name);
1398 free(allCaptureDevNameMap[i].device_name);
1399 }
1400 free(allCaptureDevNameMap);
1401 allCaptureDevNameMap = NULL;
1402 numCaptureDevNames = 0;
1403
1404 probe_devices(AL_TRUE);
1405
1406 for(i = 0;i < numCaptureDevNames;i++)
1407 AppendCaptureDeviceList(allCaptureDevNameMap[i].name);
1408 break;
1409 }
1410 } //}}}
1411 //}}}
Software OpenAL implementation