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Read capture data from pulseaudio as needed, avoiding a ring buffer
[openal-soft.git] / Alc / backends / pulseaudio.c
blob4d6cedc21852c2908e19d043fbf05e8573f51880
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 frame_size;
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_strerror);
315 LOAD_FUNC(pa_context_get_state);
316 LOAD_FUNC(pa_stream_get_state);
317 LOAD_FUNC(pa_threaded_mainloop_signal);
318 LOAD_FUNC(pa_stream_peek);
319 LOAD_FUNC(pa_threaded_mainloop_wait);
320 LOAD_FUNC(pa_threaded_mainloop_unlock);
321 LOAD_FUNC(pa_threaded_mainloop_in_thread);
322 LOAD_FUNC(pa_context_new);
323 LOAD_FUNC(pa_threaded_mainloop_stop);
324 LOAD_FUNC(pa_context_disconnect);
325 LOAD_FUNC(pa_threaded_mainloop_start);
326 LOAD_FUNC(pa_threaded_mainloop_get_api);
327 LOAD_FUNC(pa_context_set_state_callback);
328 LOAD_FUNC(pa_stream_write);
329 LOAD_FUNC(pa_xfree);
330 LOAD_FUNC(pa_stream_connect_record);
331 LOAD_FUNC(pa_stream_connect_playback);
332 LOAD_FUNC(pa_stream_readable_size);
333 LOAD_FUNC(pa_stream_writable_size);
334 LOAD_FUNC(pa_stream_cork);
335 LOAD_FUNC(pa_stream_is_suspended);
336 LOAD_FUNC(pa_stream_get_device_name);
337 LOAD_FUNC(pa_path_get_filename);
338 LOAD_FUNC(pa_get_binary_name);
339 LOAD_FUNC(pa_threaded_mainloop_free);
340 LOAD_FUNC(pa_context_errno);
341 LOAD_FUNC(pa_xmalloc);
342 LOAD_FUNC(pa_stream_unref);
343 LOAD_FUNC(pa_threaded_mainloop_accept);
344 LOAD_FUNC(pa_stream_set_write_callback);
345 LOAD_FUNC(pa_threaded_mainloop_new);
346 LOAD_FUNC(pa_context_connect);
347 LOAD_FUNC(pa_stream_set_buffer_attr);
348 LOAD_FUNC(pa_stream_get_buffer_attr);
349 LOAD_FUNC(pa_stream_get_sample_spec);
350 LOAD_FUNC(pa_stream_get_time);
351 LOAD_FUNC(pa_stream_set_read_callback);
352 LOAD_FUNC(pa_stream_set_state_callback);
353 LOAD_FUNC(pa_stream_set_moved_callback);
354 LOAD_FUNC(pa_stream_set_underflow_callback);
355 LOAD_FUNC(pa_stream_new);
356 LOAD_FUNC(pa_stream_disconnect);
357 LOAD_FUNC(pa_threaded_mainloop_lock);
358 LOAD_FUNC(pa_channel_map_init_auto);
359 LOAD_FUNC(pa_channel_map_parse);
360 LOAD_FUNC(pa_channel_map_snprint);
361 LOAD_FUNC(pa_channel_map_equal);
362 LOAD_FUNC(pa_context_get_server_info);
363 LOAD_FUNC(pa_context_get_sink_info_by_name);
364 LOAD_FUNC(pa_context_get_sink_info_list);
365 LOAD_FUNC(pa_context_get_source_info_list);
366 LOAD_FUNC(pa_operation_get_state);
367 LOAD_FUNC(pa_operation_unref);
368 #undef LOAD_FUNC
369 #define LOAD_OPTIONAL_FUNC(x) do { \
370 p##x = GetSymbol(pa_handle, #x); \
371 } while(0)
372 #if PA_CHECK_VERSION(0,9,15)
373 LOAD_OPTIONAL_FUNC(pa_channel_map_superset);
374 LOAD_OPTIONAL_FUNC(pa_stream_set_buffer_attr_callback);
375 #endif
376 #if PA_CHECK_VERSION(0,9,16)
377 LOAD_OPTIONAL_FUNC(pa_stream_begin_write);
378 #endif
379 #undef LOAD_OPTIONAL_FUNC
380
381 #else /* HAVE_DYNLOAD */
382 pa_handle = (void*)0xDEADBEEF;
383 #endif
384
385 if(ret == ALC_FALSE)
386 {
387 #ifdef HAVE_DYNLOAD
388 CloseLib(pa_handle);
389 #endif
390 pa_handle = NULL;
391 }
392 }
393 return ret;
394 } //}}}
395
396 // PulseAudio Event Callbacks //{{{
397 static void stream_state_callback(pa_stream *stream, void *pdata) //{{{
398 {
399 pa_threaded_mainloop *loop = pdata;
400 pa_stream_state_t state;
401
402 state = pa_stream_get_state(stream);
403 if(state == PA_STREAM_READY || !PA_STREAM_IS_GOOD(state))
404 pa_threaded_mainloop_signal(loop, 0);
405 }//}}}
406
407 static void stream_signal_callback(pa_stream *stream, void *pdata) //{{{
408 {
409 ALCdevice *Device = pdata;
410 pulse_data *data = Device->ExtraData;
411 (void)stream;
412
413 pa_threaded_mainloop_signal(data->loop, 0);
414 }//}}}
415
416 static void stream_buffer_attr_callback(pa_stream *stream, void *pdata) //{{{
417 {
418 const pa_buffer_attr *attr;
419 (void)pdata;
420
421 attr = pa_stream_get_buffer_attr(stream);
422 WARN("PulseAudio modified buffer length: minreq=%d, tlength=%d\n", attr->minreq, attr->tlength);
423 }//}}}
424
425 static void stream_device_callback(pa_stream *stream, void *pdata) //{{{
426 {
427 ALCdevice *Device = pdata;
428 pulse_data *data = Device->ExtraData;
429
430 free(data->device_name);
431 data->device_name = strdup(pa_stream_get_device_name(stream));
432 }//}}}
433
434 static void context_state_callback2(pa_context *context, void *pdata) //{{{
435 {
436 ALCdevice *Device = pdata;
437 pulse_data *data = Device->ExtraData;
438
439 if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
440 {
441 ERR("Received context failure!\n");
442 aluHandleDisconnect(Device);
443 }
444 pa_threaded_mainloop_signal(data->loop, 0);
445 }//}}}
446
447 static void stream_state_callback2(pa_stream *stream, void *pdata) //{{{
448 {
449 ALCdevice *Device = pdata;
450 pulse_data *data = Device->ExtraData;
451
452 if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
453 {
454 ERR("Received stream failure!\n");
455 aluHandleDisconnect(Device);
456 }
457 pa_threaded_mainloop_signal(data->loop, 0);
458 }//}}}
459
460 static void stream_success_callback(pa_stream *stream, int success, void *pdata) //{{{
461 {
462 ALCdevice *Device = pdata;
463 pulse_data *data = Device->ExtraData;
464 (void)stream;
465 (void)success;
466
467 pa_threaded_mainloop_signal(data->loop, 0);
468 }//}}}
469
470 static void sink_info_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata) //{{{
471 {
472 ALCdevice *device = pdata;
473 pulse_data *data = device->ExtraData;
474 char chanmap_str[256] = "";
475 const struct {
476 const char *str;
477 enum DevFmtChannels chans;
478 } chanmaps[] = {
479 { "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right",
480 DevFmtX71 },
481 { "front-left,front-right,front-center,lfe,rear-center,side-left,side-right",
482 DevFmtX61 },
483 { "front-left,front-right,front-center,lfe,rear-left,rear-right",
484 DevFmtX51 },
485 { "front-left,front-right,front-center,lfe,side-left,side-right",
486 DevFmtX51Side },
487 { "front-left,front-right,rear-left,rear-right", DevFmtQuad },
488 { "front-left,front-right", DevFmtStereo },
489 { "mono", DevFmtMono },
490 { NULL, 0 }
491 };
492 int i;
493 (void)context;
494
495 if(eol)
496 {
497 pa_threaded_mainloop_signal(data->loop, 0);
498 return;
499 }
500
501 for(i = 0;chanmaps[i].str;i++)
502 {
503 pa_channel_map map;
504 if(!pa_channel_map_parse(&map, chanmaps[i].str))
505 continue;
506
507 if(pa_channel_map_equal(&info->channel_map, &map)
508 #if PA_CHECK_VERSION(0,9,15)
509 || (pa_channel_map_superset &&
510 pa_channel_map_superset(&info->channel_map, &map))
511 #endif
512 )
513 {
514 device->FmtChans = chanmaps[i].chans;
515 return;
516 }
517 }
518
519 pa_channel_map_snprint(chanmap_str, sizeof(chanmap_str), &info->channel_map);
520 ERR("Failed to find format for channel map:\n %s\n", chanmap_str);
521 }//}}}
522
523 static void sink_device_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata) //{{{
524 {
525 pa_threaded_mainloop *loop = pdata;
526 char str[1024];
527 void *temp;
528 int count;
529 ALuint i;
530
531 (void)context;
532
533 if(eol)
534 {
535 pa_threaded_mainloop_signal(loop, 0);
536 return;
537 }
538
539 count = 0;
540 do {
541 if(count == 0)
542 snprintf(str, sizeof(str), "%s", info->description);
543 else
544 snprintf(str, sizeof(str), "%s #%d", info->description, count+1);
545 count++;
546
547 for(i = 0;i < numDevNames;i++)
548 {
549 if(strcmp(str, allDevNameMap[i].name) == 0)
550 break;
551 }
552 } while(i != numDevNames);
553
554 temp = realloc(allDevNameMap, (numDevNames+1) * sizeof(*allDevNameMap));
555 if(temp)
556 {
557 allDevNameMap = temp;
558 allDevNameMap[numDevNames].name = strdup(str);
559 allDevNameMap[numDevNames].device_name = strdup(info->name);
560 numDevNames++;
561 }
562 }//}}}
563
564 static void source_device_callback(pa_context *context, const pa_source_info *info, int eol, void *pdata) //{{{
565 {
566 pa_threaded_mainloop *loop = pdata;
567 char str[1024];
568 void *temp;
569 int count;
570 ALuint i;
571
572 (void)context;
573
574 if(eol)
575 {
576 pa_threaded_mainloop_signal(loop, 0);
577 return;
578 }
579
580 count = 0;
581 do {
582 if(count == 0)
583 snprintf(str, sizeof(str), "%s", info->description);
584 else
585 snprintf(str, sizeof(str), "%s #%d", info->description, count+1);
586 count++;
587
588 for(i = 0;i < numCaptureDevNames;i++)
589 {
590 if(strcmp(str, allCaptureDevNameMap[i].name) == 0)
591 break;
592 }
593 } while(i != numCaptureDevNames);
594
595 temp = realloc(allCaptureDevNameMap, (numCaptureDevNames+1) * sizeof(*allCaptureDevNameMap));
596 if(temp)
597 {
598 allCaptureDevNameMap = temp;
599 allCaptureDevNameMap[numCaptureDevNames].name = strdup(str);
600 allCaptureDevNameMap[numCaptureDevNames].device_name = strdup(info->name);
601 numCaptureDevNames++;
602 }
603 }//}}}
604 //}}}
605
606 // PulseAudio I/O Callbacks //{{{
607 static void stream_write_callback(pa_stream *stream, size_t len, void *pdata) //{{{
608 {
609 ALCdevice *Device = pdata;
610 pulse_data *data = Device->ExtraData;
611 (void)stream;
612 (void)len;
613
614 pa_threaded_mainloop_signal(data->loop, 0);
615 } //}}}
616 //}}}
617
618 static ALuint PulseProc(ALvoid *param)
619 {
620 ALCdevice *Device = param;
621 pulse_data *data = Device->ExtraData;
622 size_t len;
623
624 SetRTPriority();
625
626 pa_threaded_mainloop_lock(data->loop);
627 do {
628 len = pa_stream_writable_size(data->stream);
629 if(len < data->attr.minreq)
630 {
631 pa_threaded_mainloop_wait(data->loop);
632 continue;
633 }
634 len -= len%data->attr.minreq;
635
636 while(len > 0)
637 {
638 size_t newlen = len;
639 void *buf;
640 pa_free_cb_t free_func = NULL;
641
642 #if PA_CHECK_VERSION(0,9,16)
643 if(!pa_stream_begin_write ||
644 pa_stream_begin_write(data->stream, &buf, &newlen) < 0)
645 #endif
646 {
647 buf = pa_xmalloc(newlen);
648 free_func = pa_xfree;
649 }
650 pa_threaded_mainloop_unlock(data->loop);
651
652 aluMixData(Device, buf, newlen/data->frame_size);
653
654 pa_threaded_mainloop_lock(data->loop);
655 pa_stream_write(data->stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
656 len -= newlen;
657 }
658 } while(!data->killNow && Device->Connected);
659 pa_threaded_mainloop_unlock(data->loop);
660
661 return 0;
662 }
663
664 static pa_stream *connect_playback_stream(ALCdevice *device,
665 pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
666 pa_channel_map *chanmap)
667 {
668 pulse_data *data = device->ExtraData;
669 pa_stream_state_t state;
670 pa_stream *stream;
671
672 stream = pa_stream_new(data->context, "Playback Stream", spec, chanmap);
673 if(!stream)
674 {
675 ERR("pa_stream_new() failed: %s\n",
676 pa_strerror(pa_context_errno(data->context)));
677 return NULL;
678 }
679
680 pa_stream_set_state_callback(stream, stream_state_callback, data->loop);
681
682 if(pa_stream_connect_playback(stream, data->device_name, attr, flags, NULL, NULL) < 0)
683 {
684 ERR("Stream did not connect: %s\n",
685 pa_strerror(pa_context_errno(data->context)));
686 pa_stream_unref(stream);
687 return NULL;
688 }
689
690 while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
691 {
692 if(!PA_STREAM_IS_GOOD(state))
693 {
694 ERR("Stream did not get ready: %s\n",
695 pa_strerror(pa_context_errno(data->context)));
696 pa_stream_unref(stream);
697 return NULL;
698 }
699
700 pa_threaded_mainloop_wait(data->loop);
701 }
702 pa_stream_set_state_callback(stream, NULL, NULL);
703
704 return stream;
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 o = pa_context_get_sink_info_list(context, sink_device_callback, loop);
729 else
730 o = pa_context_get_source_info_list(context, source_device_callback, loop);
731 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
732 pa_threaded_mainloop_wait(loop);
733 pa_operation_unref(o);
734
735 pa_context_disconnect(context);
736 pa_context_unref(context);
737 }
738 pa_threaded_mainloop_unlock(loop);
739 pa_threaded_mainloop_stop(loop);
740 }
741 if(loop)
742 pa_threaded_mainloop_free(loop);
743 }
744
745
746 static ALCboolean pulse_open(ALCdevice *device, const ALCchar *device_name) //{{{
747 {
748 pulse_data *data = pa_xmalloc(sizeof(pulse_data));
749 memset(data, 0, sizeof(*data));
750
751 if(!(data->loop = pa_threaded_mainloop_new()))
752 {
753 ERR("pa_threaded_mainloop_new() failed!\n");
754 goto out;
755 }
756 if(pa_threaded_mainloop_start(data->loop) < 0)
757 {
758 ERR("pa_threaded_mainloop_start() failed\n");
759 goto out;
760 }
761
762 pa_threaded_mainloop_lock(data->loop);
763 device->ExtraData = data;
764
765 data->context = connect_context(data->loop, AL_FALSE);
766 if(!data->context)
767 {
768 pa_threaded_mainloop_unlock(data->loop);
769 goto out;
770 }
771 pa_context_set_state_callback(data->context, context_state_callback2, device);
772
773 device->szDeviceName = strdup(device_name);
774
775 pa_threaded_mainloop_unlock(data->loop);
776 return ALC_TRUE;
777
778 out:
779 if(data->loop)
780 {
781 pa_threaded_mainloop_stop(data->loop);
782 pa_threaded_mainloop_free(data->loop);
783 }
784
785 device->ExtraData = NULL;
786 pa_xfree(data);
787 return ALC_FALSE;
788 } //}}}
789
790 static void pulse_close(ALCdevice *device) //{{{
791 {
792 pulse_data *data = device->ExtraData;
793
794 pa_threaded_mainloop_lock(data->loop);
795
796 if(data->stream)
797 {
798 pa_stream_disconnect(data->stream);
799 pa_stream_unref(data->stream);
800 }
801
802 pa_context_disconnect(data->context);
803 pa_context_unref(data->context);
804
805 pa_threaded_mainloop_unlock(data->loop);
806
807 pa_threaded_mainloop_stop(data->loop);
808 pa_threaded_mainloop_free(data->loop);
809
810 free(data->device_name);
811
812 device->ExtraData = NULL;
813 pa_xfree(data);
814 } //}}}
815 //}}}
816
817 // OpenAL {{{
818 static ALCenum pulse_open_playback(ALCdevice *device, const ALCchar *device_name) //{{{
819 {
820 char *pulse_name = NULL;
821 pa_sample_spec spec;
822 pulse_data *data;
823
824 if(!allDevNameMap)
825 probe_devices(AL_FALSE);
826
827 if(!device_name && numDevNames > 0)
828 {
829 device_name = allDevNameMap[0].name;
830 pulse_name = allDevNameMap[0].device_name;
831 }
832 else
833 {
834 ALuint i;
835
836 for(i = 0;i < numDevNames;i++)
837 {
838 if(strcmp(device_name, allDevNameMap[i].name) == 0)
839 {
840 pulse_name = allDevNameMap[i].device_name;
841 break;
842 }
843 }
844 if(i == numDevNames)
845 return ALC_INVALID_VALUE;
846 }
847
848 if(pulse_open(device, device_name) == ALC_FALSE)
849 return ALC_INVALID_VALUE;
850
851 data = device->ExtraData;
852
853 pa_threaded_mainloop_lock(data->loop);
854
855 spec.format = PA_SAMPLE_S16NE;
856 spec.rate = 44100;
857 spec.channels = 2;
858
859 data->device_name = pulse_name;
860 pa_stream *stream = connect_playback_stream(device, 0, NULL, &spec, NULL);
861 if(!stream)
862 {
863 pa_threaded_mainloop_unlock(data->loop);
864 goto fail;
865 }
866
867 if(pa_stream_is_suspended(stream))
868 {
869 ERR("Device is suspended\n");
870 pa_stream_disconnect(stream);
871 pa_stream_unref(stream);
872 pa_threaded_mainloop_unlock(data->loop);
873 goto fail;
874 }
875 data->device_name = strdup(pa_stream_get_device_name(stream));
876
877 pa_stream_disconnect(stream);
878 pa_stream_unref(stream);
879
880 pa_threaded_mainloop_unlock(data->loop);
881
882 return ALC_NO_ERROR;
883
884 fail:
885 pulse_close(device);
886 return ALC_INVALID_VALUE;
887 } //}}}
888
889 static void pulse_close_playback(ALCdevice *device) //{{{
890 {
891 pulse_close(device);
892 } //}}}
893
894 static ALCboolean pulse_reset_playback(ALCdevice *device) //{{{
895 {
896 pulse_data *data = device->ExtraData;
897 pa_stream_flags_t flags = 0;
898 pa_channel_map chanmap;
899
900 pa_threaded_mainloop_lock(data->loop);
901
902 if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
903 {
904 pa_operation *o;
905 o = pa_context_get_sink_info_by_name(data->context, data->device_name, sink_info_callback, device);
906 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
907 pa_threaded_mainloop_wait(data->loop);
908 pa_operation_unref(o);
909 }
910 if(!(device->Flags&DEVICE_FREQUENCY_REQUEST))
911 flags |= PA_STREAM_FIX_RATE;
912
913 data->frame_size = FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
914 data->attr.prebuf = -1;
915 data->attr.fragsize = -1;
916 data->attr.minreq = device->UpdateSize * data->frame_size;
917 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
918 data->attr.maxlength = -1;
919 flags |= PA_STREAM_EARLY_REQUESTS;
920 flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE;
921
922 switch(device->FmtType)
923 {
924 case DevFmtByte:
925 device->FmtType = DevFmtUByte;
926 /* fall-through */
927 case DevFmtUByte:
928 data->spec.format = PA_SAMPLE_U8;
929 break;
930 case DevFmtUShort:
931 device->FmtType = DevFmtShort;
932 /* fall-through */
933 case DevFmtShort:
934 data->spec.format = PA_SAMPLE_S16NE;
935 break;
936 case DevFmtUInt:
937 device->FmtType = DevFmtInt;
938 /* fall-through */
939 case DevFmtInt:
940 data->spec.format = PA_SAMPLE_S32NE;
941 break;
942 case DevFmtFloat:
943 data->spec.format = PA_SAMPLE_FLOAT32NE;
944 break;
945 }
946 data->spec.rate = device->Frequency;
947 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
948
949 if(pa_sample_spec_valid(&data->spec) == 0)
950 {
951 ERR("Invalid sample format\n");
952 pa_threaded_mainloop_unlock(data->loop);
953 return ALC_FALSE;
954 }
955
956 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
957 {
958 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
959 pa_threaded_mainloop_unlock(data->loop);
960 return ALC_FALSE;
961 }
962 SetDefaultWFXChannelOrder(device);
963
964 data->stream = connect_playback_stream(device, flags, &data->attr, &data->spec, &chanmap);
965 if(!data->stream)
966 {
967 pa_threaded_mainloop_unlock(data->loop);
968 return ALC_FALSE;
969 }
970
971 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
972
973 data->spec = *(pa_stream_get_sample_spec(data->stream));
974 if(device->Frequency != data->spec.rate)
975 {
976 pa_operation *o;
977
978 /* Server updated our playback rate, so modify the buffer attribs
979 * accordingly. */
980 data->attr.minreq = (ALuint64)(data->attr.minreq/data->frame_size) *
981 data->spec.rate / device->Frequency * data->frame_size;
982 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
983
984 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
985 stream_success_callback, device);
986 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
987 pa_threaded_mainloop_wait(data->loop);
988 pa_operation_unref(o);
989
990 device->Frequency = data->spec.rate;
991 }
992
993 #if PA_CHECK_VERSION(0,9,15)
994 if(pa_stream_set_buffer_attr_callback)
995 pa_stream_set_buffer_attr_callback(data->stream, stream_buffer_attr_callback, device);
996 #endif
997 pa_stream_set_moved_callback(data->stream, stream_device_callback, device);
998 pa_stream_set_write_callback(data->stream, stream_write_callback, device);
999 pa_stream_set_underflow_callback(data->stream, stream_signal_callback, device);
1000
1001 data->attr = *(pa_stream_get_buffer_attr(data->stream));
1002 device->UpdateSize = data->attr.minreq / data->frame_size;
1003 device->NumUpdates = (data->attr.tlength/data->frame_size) / device->UpdateSize;
1004 if(device->NumUpdates <= 1)
1005 {
1006 pa_operation *o;
1007
1008 ERR("PulseAudio returned minreq=%d, tlength=%d; expect lag or break up\n", data->attr.minreq, data->attr.tlength);
1009
1010 /* Server gave a comparatively large minreq, so modify the tlength. */
1011 device->NumUpdates = 2;
1012 data->attr.tlength = data->attr.minreq * device->NumUpdates;
1013
1014 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
1015 stream_success_callback, device);
1016 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1017 pa_threaded_mainloop_wait(data->loop);
1018 pa_operation_unref(o);
1019 }
1020
1021 data->thread = StartThread(PulseProc, device);
1022 if(!data->thread)
1023 {
1024 #if PA_CHECK_VERSION(0,9,15)
1025 if(pa_stream_set_buffer_attr_callback)
1026 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
1027 #endif
1028 pa_stream_set_moved_callback(data->stream, NULL, NULL);
1029 pa_stream_set_write_callback(data->stream, NULL, NULL);
1030 pa_stream_set_underflow_callback(data->stream, NULL, NULL);
1031 pa_stream_disconnect(data->stream);
1032 pa_stream_unref(data->stream);
1033 data->stream = NULL;
1034
1035 pa_threaded_mainloop_unlock(data->loop);
1036 return ALC_FALSE;
1037 }
1038
1039 pa_threaded_mainloop_unlock(data->loop);
1040 return ALC_TRUE;
1041 } //}}}
1042
1043 static void pulse_stop_playback(ALCdevice *device) //{{{
1044 {
1045 pulse_data *data = device->ExtraData;
1046
1047 if(!data->stream)
1048 return;
1049
1050 data->killNow = AL_TRUE;
1051 if(data->thread)
1052 {
1053 pa_threaded_mainloop_signal(data->loop, 0);
1054 StopThread(data->thread);
1055 data->thread = NULL;
1056 }
1057 data->killNow = AL_FALSE;
1058
1059 pa_threaded_mainloop_lock(data->loop);
1060
1061 #if PA_CHECK_VERSION(0,9,15)
1062 if(pa_stream_set_buffer_attr_callback)
1063 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
1064 #endif
1065 pa_stream_set_moved_callback(data->stream, NULL, NULL);
1066 pa_stream_set_write_callback(data->stream, NULL, NULL);
1067 pa_stream_set_underflow_callback(data->stream, NULL, NULL);
1068 pa_stream_disconnect(data->stream);
1069 pa_stream_unref(data->stream);
1070 data->stream = NULL;
1071
1072 pa_threaded_mainloop_unlock(data->loop);
1073 } //}}}
1074
1075
1076 static ALCenum pulse_open_capture(ALCdevice *device, const ALCchar *device_name) //{{{
1077 {
1078 char *pulse_name = NULL;
1079 pulse_data *data;
1080 pa_stream_flags_t flags = 0;
1081 pa_stream_state_t state;
1082 pa_channel_map chanmap;
1083 ALuint samples;
1084
1085 if(!allCaptureDevNameMap)
1086 probe_devices(AL_TRUE);
1087
1088 if(!device_name && numCaptureDevNames > 0)
1089 {
1090 device_name = allCaptureDevNameMap[0].name;
1091 pulse_name = allCaptureDevNameMap[0].device_name;
1092 }
1093 else
1094 {
1095 ALuint i;
1096 for(i = 0;i < numCaptureDevNames;i++)
1097 {
1098 if(strcmp(device_name, allCaptureDevNameMap[i].name) == 0)
1099 {
1100 pulse_name = allCaptureDevNameMap[i].device_name;
1101 break;
1102 }
1103 }
1104 if(i == numCaptureDevNames)
1105 return ALC_INVALID_VALUE;
1106 }
1107
1108 if(pulse_open(device, device_name) == ALC_FALSE)
1109 return ALC_INVALID_VALUE;
1110
1111 data = device->ExtraData;
1112 pa_threaded_mainloop_lock(data->loop);
1113
1114 samples = device->UpdateSize * device->NumUpdates;
1115 samples = maxu(samples, 100 * device->Frequency / 1000);
1116 data->frame_size = FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
1117
1118 data->attr.minreq = -1;
1119 data->attr.prebuf = -1;
1120 data->attr.maxlength = samples * data->frame_size;
1121 data->attr.tlength = -1;
1122 data->attr.fragsize = minu(samples, 50*device->Frequency/1000) *
1123 data->frame_size;
1124
1125 data->spec.rate = device->Frequency;
1126 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
1127
1128 switch(device->FmtType)
1129 {
1130 case DevFmtUByte:
1131 data->spec.format = PA_SAMPLE_U8;
1132 break;
1133 case DevFmtShort:
1134 data->spec.format = PA_SAMPLE_S16NE;
1135 break;
1136 case DevFmtInt:
1137 data->spec.format = PA_SAMPLE_S32NE;
1138 break;
1139 case DevFmtFloat:
1140 data->spec.format = PA_SAMPLE_FLOAT32NE;
1141 break;
1142 case DevFmtByte:
1143 case DevFmtUShort:
1144 case DevFmtUInt:
1145 ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));
1146 pa_threaded_mainloop_unlock(data->loop);
1147 goto fail;
1148 }
1149
1150 if(pa_sample_spec_valid(&data->spec) == 0)
1151 {
1152 ERR("Invalid sample format\n");
1153 pa_threaded_mainloop_unlock(data->loop);
1154 goto fail;
1155 }
1156
1157 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
1158 {
1159 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
1160 pa_threaded_mainloop_unlock(data->loop);
1161 goto fail;
1162 }
1163
1164 data->stream = pa_stream_new(data->context, "Capture Stream", &data->spec, &chanmap);
1165 if(!data->stream)
1166 {
1167 ERR("pa_stream_new() failed: %s\n",
1168 pa_strerror(pa_context_errno(data->context)));
1169
1170 pa_threaded_mainloop_unlock(data->loop);
1171 goto fail;
1172 }
1173
1174 pa_stream_set_state_callback(data->stream, stream_state_callback, data->loop);
1175
1176 flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
1177 if(pa_stream_connect_record(data->stream, pulse_name, &data->attr, flags) < 0)
1178 {
1179 ERR("Stream did not connect: %s\n",
1180 pa_strerror(pa_context_errno(data->context)));
1181
1182 pa_stream_unref(data->stream);
1183 data->stream = NULL;
1184
1185 pa_threaded_mainloop_unlock(data->loop);
1186 goto fail;
1187 }
1188
1189 while((state=pa_stream_get_state(data->stream)) != PA_STREAM_READY)
1190 {
1191 if(!PA_STREAM_IS_GOOD(state))
1192 {
1193 ERR("Stream did not get ready: %s\n",
1194 pa_strerror(pa_context_errno(data->context)));
1195
1196 pa_stream_unref(data->stream);
1197 data->stream = NULL;
1198
1199 pa_threaded_mainloop_unlock(data->loop);
1200 goto fail;
1201 }
1202
1203 pa_threaded_mainloop_wait(data->loop);
1204 }
1205 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
1206
1207 pa_threaded_mainloop_unlock(data->loop);
1208 return ALC_NO_ERROR;
1209
1210 fail:
1211 pulse_close(device);
1212 return ALC_INVALID_VALUE;
1213 } //}}}
1214
1215 static void pulse_close_capture(ALCdevice *device) //{{{
1216 {
1217 pulse_close(device);
1218 } //}}}
1219
1220 static void pulse_start_capture(ALCdevice *device) //{{{
1221 {
1222 pulse_data *data = device->ExtraData;
1223 pa_operation *o;
1224
1225 pa_threaded_mainloop_lock(data->loop);
1226 o = pa_stream_cork(data->stream, 0, stream_success_callback, device);
1227 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1228 pa_threaded_mainloop_wait(data->loop);
1229 pa_operation_unref(o);
1230 pa_threaded_mainloop_unlock(data->loop);
1231 } //}}}
1232
1233 static void pulse_stop_capture(ALCdevice *device) //{{{
1234 {
1235 pulse_data *data = device->ExtraData;
1236 pa_operation *o;
1237
1238 pa_threaded_mainloop_lock(data->loop);
1239 o = pa_stream_cork(data->stream, 1, stream_success_callback, device);
1240 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1241 pa_threaded_mainloop_wait(data->loop);
1242 pa_operation_unref(o);
1243 pa_threaded_mainloop_unlock(data->loop);
1244 } //}}}
1245
1246 static ALCenum pulse_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint samples) //{{{
1247 {
1248 pulse_data *data = device->ExtraData;
1249 ALCuint todo = samples * data->frame_size;
1250
1251 pa_threaded_mainloop_lock(data->loop);
1252 /* Capture is done in fragment-sized chunks, so we loop until we get all
1253 * that's available */
1254 data->last_readable -= todo;
1255 while(todo > 0)
1256 {
1257 size_t rem = todo;
1258
1259 if(data->cap_len == 0)
1260 {
1261 pa_stream_state_t state;
1262
1263 state = pa_stream_get_state(data->stream);
1264 if(!PA_STREAM_IS_GOOD(state))
1265 {
1266 aluHandleDisconnect(device);
1267 break;
1268 }
1269 if(pa_stream_peek(data->stream, &data->cap_store, &data->cap_len) < 0)
1270 {
1271 ERR("pa_stream_peek() failed: %s\n",
1272 pa_strerror(pa_context_errno(data->context)));
1273 aluHandleDisconnect(device);
1274 break;
1275 }
1276 data->cap_remain = data->cap_len;
1277 }
1278 if(rem > data->cap_remain)
1279 rem = data->cap_remain;
1280
1281 memcpy(buffer, data->cap_store, rem);
1282
1283 buffer = (ALbyte*)buffer + rem;
1284 todo -= rem;
1285
1286 data->cap_store = (ALbyte*)data->cap_store + rem;
1287 data->cap_remain -= rem;
1288 if(data->cap_remain == 0)
1289 {
1290 pa_stream_drop(data->stream);
1291 data->cap_len = 0;
1292 }
1293 }
1294 if(todo > 0)
1295 memset(buffer, ((device->FmtType==DevFmtUByte) ? 0x80 : 0), todo);
1296 pa_threaded_mainloop_unlock(data->loop);
1297
1298 return ALC_NO_ERROR;
1299 } //}}}
1300
1301 static ALCuint pulse_available_samples(ALCdevice *device) //{{{
1302 {
1303 pulse_data *data = device->ExtraData;
1304 size_t readable = data->cap_remain;
1305
1306 pa_threaded_mainloop_lock(data->loop);
1307 if(device->Connected)
1308 {
1309 ssize_t got = pa_stream_readable_size(data->stream);
1310 if(got > 0 && (size_t)got > data->cap_len)
1311 readable += got - data->cap_len;
1312 }
1313 pa_threaded_mainloop_unlock(data->loop);
1314
1315 if(data->last_readable < readable)
1316 data->last_readable = readable;
1317 return data->last_readable / data->frame_size;
1318 } //}}}
1319
1320
1321 static const BackendFuncs pulse_funcs = { //{{{
1322 pulse_open_playback,
1323 pulse_close_playback,
1324 pulse_reset_playback,
1325 pulse_stop_playback,
1326 pulse_open_capture,
1327 pulse_close_capture,
1328 pulse_start_capture,
1329 pulse_stop_capture,
1330 pulse_capture_samples,
1331 pulse_available_samples
1332 }; //}}}
1333
1334 ALCboolean alc_pulse_init(BackendFuncs *func_list) //{{{
1335 {
1336 ALCboolean ret = ALC_FALSE;
1337
1338 if(pulse_load())
1339 {
1340 pa_threaded_mainloop *loop;
1341
1342 pulse_ctx_flags = 0;
1343 if(!GetConfigValueBool("pulse", "spawn-server", 0))
1344 pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
1345
1346 if((loop=pa_threaded_mainloop_new()) &&
1347 pa_threaded_mainloop_start(loop) >= 0)
1348 {
1349 pa_context *context;
1350
1351 pa_threaded_mainloop_lock(loop);
1352 context = connect_context(loop, AL_TRUE);
1353 if(context)
1354 {
1355 ret = ALC_TRUE;
1356
1357 pa_context_disconnect(context);
1358 pa_context_unref(context);
1359 }
1360 pa_threaded_mainloop_unlock(loop);
1361 pa_threaded_mainloop_stop(loop);
1362 }
1363 if(loop)
1364 pa_threaded_mainloop_free(loop);
1365 }
1366
1367 if(ret != ALC_FALSE)
1368 *func_list = pulse_funcs;
1369 return ret;
1370 } //}}}
1371
1372 void alc_pulse_deinit(void) //{{{
1373 {
1374 ALuint i;
1375
1376 for(i = 0;i < numDevNames;++i)
1377 {
1378 free(allDevNameMap[i].name);
1379 free(allDevNameMap[i].device_name);
1380 }
1381 free(allDevNameMap);
1382 allDevNameMap = NULL;
1383 numDevNames = 0;
1384
1385 for(i = 0;i < numCaptureDevNames;++i)
1386 {
1387 free(allCaptureDevNameMap[i].name);
1388 free(allCaptureDevNameMap[i].device_name);
1389 }
1390 free(allCaptureDevNameMap);
1391 allCaptureDevNameMap = NULL;
1392 numCaptureDevNames = 0;
1393
1394 #ifdef HAVE_DYNLOAD
1395 if(pa_handle)
1396 CloseLib(pa_handle);
1397 pa_handle = NULL;
1398 #endif
1399 } //}}}
1400
1401 void alc_pulse_probe(enum DevProbe type) //{{{
1402 {
1403 ALuint i;
1404
1405 switch(type)
1406 {
1407 case ALL_DEVICE_PROBE:
1408 for(i = 0;i < numDevNames;++i)
1409 {
1410 free(allDevNameMap[i].name);
1411 free(allDevNameMap[i].device_name);
1412 }
1413 free(allDevNameMap);
1414 allDevNameMap = NULL;
1415 numDevNames = 0;
1416
1417 probe_devices(AL_FALSE);
1418
1419 for(i = 0;i < numDevNames;i++)
1420 AppendAllDeviceList(allDevNameMap[i].name);
1421 break;
1422
1423 case CAPTURE_DEVICE_PROBE:
1424 for(i = 0;i < numCaptureDevNames;++i)
1425 {
1426 free(allCaptureDevNameMap[i].name);
1427 free(allCaptureDevNameMap[i].device_name);
1428 }
1429 free(allCaptureDevNameMap);
1430 allCaptureDevNameMap = NULL;
1431 numCaptureDevNames = 0;
1432
1433 probe_devices(AL_TRUE);
1434
1435 for(i = 0;i < numCaptureDevNames;i++)
1436 AppendCaptureDeviceList(allCaptureDevNameMap[i].name);
1437 break;
1438 }
1439 } //}}}
1440 //}}}
Software OpenAL implementation