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Don't allow the PulseAudio stream to move
[openal-soft.git] / Alc / backends / pulseaudio.c
blobae8fced8c4d925a57683c03ead38f1bbab210d03
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_by_name);
112 MAKE_FUNC(pa_context_get_source_info_list);
113 MAKE_FUNC(pa_operation_get_state);
114 MAKE_FUNC(pa_operation_unref);
115 #if PA_CHECK_VERSION(0,9,15)
116 MAKE_FUNC(pa_channel_map_superset);
117 MAKE_FUNC(pa_stream_set_buffer_attr_callback);
118 #endif
119 #if PA_CHECK_VERSION(0,9,16)
120 MAKE_FUNC(pa_stream_begin_write);
121 #endif
122 #undef MAKE_FUNC
123
124 #define pa_context_unref ppa_context_unref
125 #define pa_sample_spec_valid ppa_sample_spec_valid
126 #define pa_frame_size ppa_frame_size
127 #define pa_stream_drop ppa_stream_drop
128 #define pa_strerror ppa_strerror
129 #define pa_context_get_state ppa_context_get_state
130 #define pa_stream_get_state ppa_stream_get_state
131 #define pa_threaded_mainloop_signal ppa_threaded_mainloop_signal
132 #define pa_stream_peek ppa_stream_peek
133 #define pa_threaded_mainloop_wait ppa_threaded_mainloop_wait
134 #define pa_threaded_mainloop_unlock ppa_threaded_mainloop_unlock
135 #define pa_threaded_mainloop_in_thread ppa_threaded_mainloop_in_thread
136 #define pa_context_new ppa_context_new
137 #define pa_threaded_mainloop_stop ppa_threaded_mainloop_stop
138 #define pa_context_disconnect ppa_context_disconnect
139 #define pa_threaded_mainloop_start ppa_threaded_mainloop_start
140 #define pa_threaded_mainloop_get_api ppa_threaded_mainloop_get_api
141 #define pa_context_set_state_callback ppa_context_set_state_callback
142 #define pa_stream_write ppa_stream_write
143 #define pa_xfree ppa_xfree
144 #define pa_stream_connect_record ppa_stream_connect_record
145 #define pa_stream_connect_playback ppa_stream_connect_playback
146 #define pa_stream_readable_size ppa_stream_readable_size
147 #define pa_stream_writable_size ppa_stream_writable_size
148 #define pa_stream_cork ppa_stream_cork
149 #define pa_stream_is_suspended ppa_stream_is_suspended
150 #define pa_stream_get_device_name ppa_stream_get_device_name
151 #define pa_path_get_filename ppa_path_get_filename
152 #define pa_get_binary_name ppa_get_binary_name
153 #define pa_threaded_mainloop_free ppa_threaded_mainloop_free
154 #define pa_context_errno ppa_context_errno
155 #define pa_xmalloc ppa_xmalloc
156 #define pa_stream_unref ppa_stream_unref
157 #define pa_threaded_mainloop_accept ppa_threaded_mainloop_accept
158 #define pa_stream_set_write_callback ppa_stream_set_write_callback
159 #define pa_threaded_mainloop_new ppa_threaded_mainloop_new
160 #define pa_context_connect ppa_context_connect
161 #define pa_stream_set_buffer_attr ppa_stream_set_buffer_attr
162 #define pa_stream_get_buffer_attr ppa_stream_get_buffer_attr
163 #define pa_stream_get_sample_spec ppa_stream_get_sample_spec
164 #define pa_stream_get_time ppa_stream_get_time
165 #define pa_stream_set_read_callback ppa_stream_set_read_callback
166 #define pa_stream_set_state_callback ppa_stream_set_state_callback
167 #define pa_stream_set_moved_callback ppa_stream_set_moved_callback
168 #define pa_stream_set_underflow_callback ppa_stream_set_underflow_callback
169 #define pa_stream_new ppa_stream_new
170 #define pa_stream_disconnect ppa_stream_disconnect
171 #define pa_threaded_mainloop_lock ppa_threaded_mainloop_lock
172 #define pa_channel_map_init_auto ppa_channel_map_init_auto
173 #define pa_channel_map_parse ppa_channel_map_parse
174 #define pa_channel_map_snprint ppa_channel_map_snprint
175 #define pa_channel_map_equal ppa_channel_map_equal
176 #define pa_context_get_server_info ppa_context_get_server_info
177 #define pa_context_get_sink_info_by_name ppa_context_get_sink_info_by_name
178 #define pa_context_get_sink_info_list ppa_context_get_sink_info_list
179 #define pa_context_get_source_info_by_name ppa_context_get_source_info_by_name
180 #define pa_context_get_source_info_list ppa_context_get_source_info_list
181 #define pa_operation_get_state ppa_operation_get_state
182 #define pa_operation_unref ppa_operation_unref
183 #if PA_CHECK_VERSION(0,9,15)
184 #define pa_channel_map_superset ppa_channel_map_superset
185 #define pa_stream_set_buffer_attr_callback ppa_stream_set_buffer_attr_callback
186 #endif
187 #if PA_CHECK_VERSION(0,9,16)
188 #define pa_stream_begin_write ppa_stream_begin_write
189 #endif
190
191 #endif
192
193 #ifndef PATH_MAX
194 #define PATH_MAX 4096
195 #endif
196
197 typedef struct {
198 char *device_name;
199
200 const void *cap_store;
201 size_t cap_len;
202 size_t cap_remain;
203
204 ALCuint last_readable;
205
206 pa_buffer_attr attr;
207 pa_sample_spec spec;
208
209 pa_threaded_mainloop *loop;
210
211 ALvoid *thread;
212 volatile ALboolean killNow;
213
214 pa_stream *stream;
215 pa_context *context;
216 } pulse_data;
217
218 typedef struct {
219 char *name;
220 char *device_name;
221 } DevMap;
222
223
224 static DevMap *allDevNameMap;
225 static ALuint numDevNames;
226 static DevMap *allCaptureDevNameMap;
227 static ALuint numCaptureDevNames;
228 static pa_context_flags_t pulse_ctx_flags;
229
230
231 static void context_state_callback(pa_context *context, void *pdata)
232 {
233 pa_threaded_mainloop *loop = pdata;
234 pa_context_state_t state;
235
236 state = pa_context_get_state(context);
237 if(state == PA_CONTEXT_READY || !PA_CONTEXT_IS_GOOD(state))
238 pa_threaded_mainloop_signal(loop, 0);
239 }
240
241 static pa_context *connect_context(pa_threaded_mainloop *loop, ALboolean silent)
242 {
243 const char *name = "OpenAL Soft";
244 char path_name[PATH_MAX];
245 pa_context_state_t state;
246 pa_context *context;
247 int err;
248
249 if(pa_get_binary_name(path_name, sizeof(path_name)))
250 name = pa_path_get_filename(path_name);
251
252 context = pa_context_new(pa_threaded_mainloop_get_api(loop), name);
253 if(!context)
254 {
255 ERR("pa_context_new() failed\n");
256 return NULL;
257 }
258
259 pa_context_set_state_callback(context, context_state_callback, loop);
260
261 if((err=pa_context_connect(context, NULL, pulse_ctx_flags, NULL)) >= 0)
262 {
263 while((state=pa_context_get_state(context)) != PA_CONTEXT_READY)
264 {
265 if(!PA_CONTEXT_IS_GOOD(state))
266 {
267 err = pa_context_errno(context);
268 if(err > 0) err = -err;
269 break;
270 }
271
272 pa_threaded_mainloop_wait(loop);
273 }
274 }
275 pa_context_set_state_callback(context, NULL, NULL);
276
277 if(err < 0)
278 {
279 if(!silent)
280 ERR("Context did not connect: %s\n", pa_strerror(err));
281 pa_context_unref(context);
282 return NULL;
283 }
284
285 return context;
286 }
287
288
289 static ALCboolean pulse_load(void) //{{{
290 {
291 ALCboolean ret = ALC_TRUE;
292 if(!pa_handle)
293 {
294 #ifdef HAVE_DYNLOAD
295
296 #ifdef _WIN32
297 #define PALIB "libpulse-0.dll"
298 #elif defined(__APPLE__) && defined(__MACH__)
299 #define PALIB "libpulse.0.dylib"
300 #else
301 #define PALIB "libpulse.so.0"
302 #endif
303 pa_handle = LoadLib(PALIB);
304 if(!pa_handle)
305 return ALC_FALSE;
306
307 #define LOAD_FUNC(x) do { \
308 p##x = GetSymbol(pa_handle, #x); \
309 if(!(p##x)) { \
310 ret = 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_frame_size);
317 LOAD_FUNC(pa_strerror);
318 LOAD_FUNC(pa_context_get_state);
319 LOAD_FUNC(pa_stream_get_state);
320 LOAD_FUNC(pa_threaded_mainloop_signal);
321 LOAD_FUNC(pa_stream_peek);
322 LOAD_FUNC(pa_threaded_mainloop_wait);
323 LOAD_FUNC(pa_threaded_mainloop_unlock);
324 LOAD_FUNC(pa_threaded_mainloop_in_thread);
325 LOAD_FUNC(pa_context_new);
326 LOAD_FUNC(pa_threaded_mainloop_stop);
327 LOAD_FUNC(pa_context_disconnect);
328 LOAD_FUNC(pa_threaded_mainloop_start);
329 LOAD_FUNC(pa_threaded_mainloop_get_api);
330 LOAD_FUNC(pa_context_set_state_callback);
331 LOAD_FUNC(pa_stream_write);
332 LOAD_FUNC(pa_xfree);
333 LOAD_FUNC(pa_stream_connect_record);
334 LOAD_FUNC(pa_stream_connect_playback);
335 LOAD_FUNC(pa_stream_readable_size);
336 LOAD_FUNC(pa_stream_writable_size);
337 LOAD_FUNC(pa_stream_cork);
338 LOAD_FUNC(pa_stream_is_suspended);
339 LOAD_FUNC(pa_stream_get_device_name);
340 LOAD_FUNC(pa_path_get_filename);
341 LOAD_FUNC(pa_get_binary_name);
342 LOAD_FUNC(pa_threaded_mainloop_free);
343 LOAD_FUNC(pa_context_errno);
344 LOAD_FUNC(pa_xmalloc);
345 LOAD_FUNC(pa_stream_unref);
346 LOAD_FUNC(pa_threaded_mainloop_accept);
347 LOAD_FUNC(pa_stream_set_write_callback);
348 LOAD_FUNC(pa_threaded_mainloop_new);
349 LOAD_FUNC(pa_context_connect);
350 LOAD_FUNC(pa_stream_set_buffer_attr);
351 LOAD_FUNC(pa_stream_get_buffer_attr);
352 LOAD_FUNC(pa_stream_get_sample_spec);
353 LOAD_FUNC(pa_stream_get_time);
354 LOAD_FUNC(pa_stream_set_read_callback);
355 LOAD_FUNC(pa_stream_set_state_callback);
356 LOAD_FUNC(pa_stream_set_moved_callback);
357 LOAD_FUNC(pa_stream_set_underflow_callback);
358 LOAD_FUNC(pa_stream_new);
359 LOAD_FUNC(pa_stream_disconnect);
360 LOAD_FUNC(pa_threaded_mainloop_lock);
361 LOAD_FUNC(pa_channel_map_init_auto);
362 LOAD_FUNC(pa_channel_map_parse);
363 LOAD_FUNC(pa_channel_map_snprint);
364 LOAD_FUNC(pa_channel_map_equal);
365 LOAD_FUNC(pa_context_get_server_info);
366 LOAD_FUNC(pa_context_get_sink_info_by_name);
367 LOAD_FUNC(pa_context_get_sink_info_list);
368 LOAD_FUNC(pa_context_get_source_info_by_name);
369 LOAD_FUNC(pa_context_get_source_info_list);
370 LOAD_FUNC(pa_operation_get_state);
371 LOAD_FUNC(pa_operation_unref);
372 #undef LOAD_FUNC
373 #define LOAD_OPTIONAL_FUNC(x) do { \
374 p##x = GetSymbol(pa_handle, #x); \
375 } while(0)
376 #if PA_CHECK_VERSION(0,9,15)
377 LOAD_OPTIONAL_FUNC(pa_channel_map_superset);
378 LOAD_OPTIONAL_FUNC(pa_stream_set_buffer_attr_callback);
379 #endif
380 #if PA_CHECK_VERSION(0,9,16)
381 LOAD_OPTIONAL_FUNC(pa_stream_begin_write);
382 #endif
383 #undef LOAD_OPTIONAL_FUNC
384
385 #else /* HAVE_DYNLOAD */
386 pa_handle = (void*)0xDEADBEEF;
387 #endif
388
389 if(ret == ALC_FALSE)
390 {
391 #ifdef HAVE_DYNLOAD
392 CloseLib(pa_handle);
393 #endif
394 pa_handle = NULL;
395 }
396 }
397 return ret;
398 } //}}}
399
400 // PulseAudio Event Callbacks //{{{
401 static void stream_state_callback(pa_stream *stream, void *pdata) //{{{
402 {
403 pa_threaded_mainloop *loop = pdata;
404 pa_stream_state_t state;
405
406 state = pa_stream_get_state(stream);
407 if(state == PA_STREAM_READY || !PA_STREAM_IS_GOOD(state))
408 pa_threaded_mainloop_signal(loop, 0);
409 }//}}}
410
411 static void stream_signal_callback(pa_stream *stream, void *pdata) //{{{
412 {
413 ALCdevice *Device = pdata;
414 pulse_data *data = Device->ExtraData;
415 (void)stream;
416
417 pa_threaded_mainloop_signal(data->loop, 0);
418 }//}}}
419
420 static void stream_buffer_attr_callback(pa_stream *stream, void *pdata) //{{{
421 {
422 const pa_buffer_attr *attr;
423 (void)pdata;
424
425 attr = pa_stream_get_buffer_attr(stream);
426 WARN("PulseAudio modified buffer length: minreq=%d, tlength=%d\n", attr->minreq, attr->tlength);
427 }//}}}
428
429 static void context_state_callback2(pa_context *context, void *pdata) //{{{
430 {
431 ALCdevice *Device = pdata;
432 pulse_data *data = Device->ExtraData;
433
434 if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
435 {
436 ERR("Received context failure!\n");
437 aluHandleDisconnect(Device);
438 }
439 pa_threaded_mainloop_signal(data->loop, 0);
440 }//}}}
441
442 static void stream_state_callback2(pa_stream *stream, void *pdata) //{{{
443 {
444 ALCdevice *Device = pdata;
445 pulse_data *data = Device->ExtraData;
446
447 if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
448 {
449 ERR("Received stream failure!\n");
450 aluHandleDisconnect(Device);
451 }
452 pa_threaded_mainloop_signal(data->loop, 0);
453 }//}}}
454
455 static void stream_success_callback(pa_stream *stream, int success, void *pdata) //{{{
456 {
457 ALCdevice *Device = pdata;
458 pulse_data *data = Device->ExtraData;
459 (void)stream;
460 (void)success;
461
462 pa_threaded_mainloop_signal(data->loop, 0);
463 }//}}}
464
465 static void sink_info_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata) //{{{
466 {
467 ALCdevice *device = pdata;
468 pulse_data *data = device->ExtraData;
469 char chanmap_str[256] = "";
470 const struct {
471 const char *str;
472 enum DevFmtChannels chans;
473 } chanmaps[] = {
474 { "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right",
475 DevFmtX71 },
476 { "front-left,front-right,front-center,lfe,rear-center,side-left,side-right",
477 DevFmtX61 },
478 { "front-left,front-right,front-center,lfe,rear-left,rear-right",
479 DevFmtX51 },
480 { "front-left,front-right,front-center,lfe,side-left,side-right",
481 DevFmtX51Side },
482 { "front-left,front-right,rear-left,rear-right", DevFmtQuad },
483 { "front-left,front-right", DevFmtStereo },
484 { "mono", DevFmtMono },
485 { NULL, 0 }
486 };
487 int i;
488 (void)context;
489
490 if(eol)
491 {
492 pa_threaded_mainloop_signal(data->loop, 0);
493 return;
494 }
495
496 for(i = 0;chanmaps[i].str;i++)
497 {
498 pa_channel_map map;
499 if(!pa_channel_map_parse(&map, chanmaps[i].str))
500 continue;
501
502 if(pa_channel_map_equal(&info->channel_map, &map)
503 #if PA_CHECK_VERSION(0,9,15)
504 || (pa_channel_map_superset &&
505 pa_channel_map_superset(&info->channel_map, &map))
506 #endif
507 )
508 {
509 device->FmtChans = chanmaps[i].chans;
510 return;
511 }
512 }
513
514 pa_channel_map_snprint(chanmap_str, sizeof(chanmap_str), &info->channel_map);
515 ERR("Failed to find format for channel map:\n %s\n", chanmap_str);
516 }//}}}
517
518 static void sink_device_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata) //{{{
519 {
520 pa_threaded_mainloop *loop = pdata;
521 void *temp;
522 ALuint i;
523
524 (void)context;
525
526 if(eol)
527 {
528 pa_threaded_mainloop_signal(loop, 0);
529 return;
530 }
531
532 for(i = 0;i < numDevNames;i++)
533 {
534 if(strcmp(info->name, allDevNameMap[i].device_name) == 0)
535 return;
536 }
537
538 TRACE("Got device \"%s\", \"%s\"\n", info->description, info->name);
539
540 temp = realloc(allDevNameMap, (numDevNames+1) * sizeof(*allDevNameMap));
541 if(temp)
542 {
543 allDevNameMap = temp;
544 allDevNameMap[numDevNames].name = strdup(info->description);
545 allDevNameMap[numDevNames].device_name = strdup(info->name);
546 numDevNames++;
547 }
548 }//}}}
549
550 static void source_device_callback(pa_context *context, const pa_source_info *info, int eol, void *pdata) //{{{
551 {
552 pa_threaded_mainloop *loop = pdata;
553 void *temp;
554 ALuint i;
555
556 (void)context;
557
558 if(eol)
559 {
560 pa_threaded_mainloop_signal(loop, 0);
561 return;
562 }
563
564 for(i = 0;i < numCaptureDevNames;i++)
565 {
566 if(strcmp(info->name, allCaptureDevNameMap[i].device_name) == 0)
567 return;
568 }
569
570 TRACE("Got device \"%s\", \"%s\"\n", info->description, info->name);
571
572 temp = realloc(allCaptureDevNameMap, (numCaptureDevNames+1) * sizeof(*allCaptureDevNameMap));
573 if(temp)
574 {
575 allCaptureDevNameMap = temp;
576 allCaptureDevNameMap[numCaptureDevNames].name = strdup(info->description);
577 allCaptureDevNameMap[numCaptureDevNames].device_name = strdup(info->name);
578 numCaptureDevNames++;
579 }
580 }//}}}
581 //}}}
582
583 // PulseAudio I/O Callbacks //{{{
584 static void stream_write_callback(pa_stream *stream, size_t len, void *pdata) //{{{
585 {
586 ALCdevice *Device = pdata;
587 pulse_data *data = Device->ExtraData;
588 (void)stream;
589 (void)len;
590
591 pa_threaded_mainloop_signal(data->loop, 0);
592 } //}}}
593 //}}}
594
595 static ALuint PulseProc(ALvoid *param)
596 {
597 ALCdevice *Device = param;
598 pulse_data *data = Device->ExtraData;
599 size_t frame_size;
600 size_t len;
601
602 SetRTPriority();
603
604 frame_size = pa_frame_size(&data->spec);
605 pa_threaded_mainloop_lock(data->loop);
606 do {
607 len = pa_stream_writable_size(data->stream);
608 if(len < data->attr.minreq)
609 {
610 pa_threaded_mainloop_wait(data->loop);
611 continue;
612 }
613 len -= len%data->attr.minreq;
614
615 while(len > 0)
616 {
617 size_t newlen = len;
618 void *buf;
619 pa_free_cb_t free_func = NULL;
620
621 #if PA_CHECK_VERSION(0,9,16)
622 if(!pa_stream_begin_write ||
623 pa_stream_begin_write(data->stream, &buf, &newlen) < 0)
624 #endif
625 {
626 buf = pa_xmalloc(newlen);
627 free_func = pa_xfree;
628 }
629 pa_threaded_mainloop_unlock(data->loop);
630
631 aluMixData(Device, buf, newlen/frame_size);
632
633 pa_threaded_mainloop_lock(data->loop);
634 pa_stream_write(data->stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
635 len -= newlen;
636 }
637 } while(!data->killNow && Device->Connected);
638 pa_threaded_mainloop_unlock(data->loop);
639
640 return 0;
641 }
642
643 static pa_stream *connect_playback_stream(const char *device_name,
644 pa_threaded_mainloop *loop, pa_context *context,
645 pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
646 pa_channel_map *chanmap)
647 {
648 pa_stream_state_t state;
649 pa_stream *stream;
650
651 stream = pa_stream_new(context, "Playback Stream", spec, chanmap);
652 if(!stream)
653 {
654 ERR("pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(context)));
655 return NULL;
656 }
657
658 pa_stream_set_state_callback(stream, stream_state_callback, loop);
659
660 if(pa_stream_connect_playback(stream, device_name, attr, flags, NULL, NULL) < 0)
661 {
662 ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
663 pa_stream_unref(stream);
664 return NULL;
665 }
666
667 while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
668 {
669 if(!PA_STREAM_IS_GOOD(state))
670 {
671 ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
672 pa_stream_unref(stream);
673 return NULL;
674 }
675
676 pa_threaded_mainloop_wait(loop);
677 }
678 pa_stream_set_state_callback(stream, NULL, NULL);
679
680 return stream;
681 }
682
683 static pa_stream *connect_record_stream(const char *device_name,
684 pa_threaded_mainloop *loop, pa_context *context,
685 pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
686 pa_channel_map *chanmap)
687 {
688 pa_stream_state_t state;
689 pa_stream *stream;
690
691 stream = pa_stream_new(context, "Capture Stream", spec, chanmap);
692 if(!stream)
693 {
694 ERR("pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(context)));
695 return NULL;
696 }
697
698 pa_stream_set_state_callback(stream, stream_state_callback, loop);
699
700 if(pa_stream_connect_record(stream, device_name, attr, flags) < 0)
701 {
702 ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
703 pa_stream_unref(stream);
704 return NULL;
705 }
706
707 while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
708 {
709 if(!PA_STREAM_IS_GOOD(state))
710 {
711 ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
712 pa_stream_unref(stream);
713 return NULL;
714 }
715
716 pa_threaded_mainloop_wait(loop);
717 }
718 pa_stream_set_state_callback(stream, NULL, NULL);
719
720 return stream;
721 }
722
723 static void probe_devices(ALboolean capture)
724 {
725 pa_threaded_mainloop *loop;
726
727 if(capture == AL_FALSE)
728 allDevNameMap = malloc(sizeof(DevMap) * 1);
729 else
730 allCaptureDevNameMap = malloc(sizeof(DevMap) * 1);
731
732 if((loop=pa_threaded_mainloop_new()) &&
733 pa_threaded_mainloop_start(loop) >= 0)
734 {
735 pa_context *context;
736
737 pa_threaded_mainloop_lock(loop);
738 context = connect_context(loop, AL_FALSE);
739 if(context)
740 {
741 pa_operation *o;
742
743 if(capture == AL_FALSE)
744 {
745 pa_stream_flags_t flags;
746 pa_sample_spec spec;
747 pa_stream *stream;
748
749 flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
750 PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
751
752 spec.format = PA_SAMPLE_S16NE;
753 spec.rate = 44100;
754 spec.channels = 2;
755
756 stream = connect_playback_stream(NULL, loop, context, flags,
757 NULL, &spec, NULL);
758 if(stream)
759 {
760 o = pa_context_get_sink_info_by_name(context, pa_stream_get_device_name(stream), sink_device_callback, loop);
761 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
762 pa_threaded_mainloop_wait(loop);
763 pa_operation_unref(o);
764
765 pa_stream_disconnect(stream);
766 pa_stream_unref(stream);
767 stream = NULL;
768 }
769
770 o = pa_context_get_sink_info_list(context, sink_device_callback, loop);
771 }
772 else
773 {
774 pa_stream_flags_t flags;
775 pa_sample_spec spec;
776 pa_stream *stream;
777
778 flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
779 PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
780
781 spec.format = PA_SAMPLE_S16NE;
782 spec.rate = 44100;
783 spec.channels = 1;
784
785 stream = connect_record_stream(NULL, loop, context, flags,
786 NULL, &spec, NULL);
787 if(stream)
788 {
789 o = pa_context_get_source_info_by_name(context, pa_stream_get_device_name(stream), source_device_callback, loop);
790 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
791 pa_threaded_mainloop_wait(loop);
792 pa_operation_unref(o);
793
794 pa_stream_disconnect(stream);
795 pa_stream_unref(stream);
796 stream = NULL;
797 }
798
799 o = pa_context_get_source_info_list(context, source_device_callback, loop);
800 }
801 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
802 pa_threaded_mainloop_wait(loop);
803 pa_operation_unref(o);
804
805 pa_context_disconnect(context);
806 pa_context_unref(context);
807 }
808 pa_threaded_mainloop_unlock(loop);
809 pa_threaded_mainloop_stop(loop);
810 }
811 if(loop)
812 pa_threaded_mainloop_free(loop);
813 }
814
815
816 static ALCboolean pulse_open(ALCdevice *device, const ALCchar *device_name) //{{{
817 {
818 pulse_data *data = pa_xmalloc(sizeof(pulse_data));
819 memset(data, 0, sizeof(*data));
820
821 if(!(data->loop = pa_threaded_mainloop_new()))
822 {
823 ERR("pa_threaded_mainloop_new() failed!\n");
824 goto out;
825 }
826 if(pa_threaded_mainloop_start(data->loop) < 0)
827 {
828 ERR("pa_threaded_mainloop_start() failed\n");
829 goto out;
830 }
831
832 pa_threaded_mainloop_lock(data->loop);
833 device->ExtraData = data;
834
835 data->context = connect_context(data->loop, AL_FALSE);
836 if(!data->context)
837 {
838 pa_threaded_mainloop_unlock(data->loop);
839 goto out;
840 }
841 pa_context_set_state_callback(data->context, context_state_callback2, device);
842
843 device->szDeviceName = strdup(device_name);
844
845 pa_threaded_mainloop_unlock(data->loop);
846 return ALC_TRUE;
847
848 out:
849 if(data->loop)
850 {
851 pa_threaded_mainloop_stop(data->loop);
852 pa_threaded_mainloop_free(data->loop);
853 }
854
855 device->ExtraData = NULL;
856 pa_xfree(data);
857 return ALC_FALSE;
858 } //}}}
859
860 static void pulse_close(ALCdevice *device) //{{{
861 {
862 pulse_data *data = device->ExtraData;
863
864 pa_threaded_mainloop_lock(data->loop);
865
866 if(data->stream)
867 {
868 pa_stream_disconnect(data->stream);
869 pa_stream_unref(data->stream);
870 }
871
872 pa_context_disconnect(data->context);
873 pa_context_unref(data->context);
874
875 pa_threaded_mainloop_unlock(data->loop);
876
877 pa_threaded_mainloop_stop(data->loop);
878 pa_threaded_mainloop_free(data->loop);
879
880 free(data->device_name);
881
882 device->ExtraData = NULL;
883 pa_xfree(data);
884 } //}}}
885 //}}}
886
887 // OpenAL {{{
888 static ALCenum pulse_open_playback(ALCdevice *device, const ALCchar *device_name) //{{{
889 {
890 const char *pulse_name = NULL;
891 pulse_data *data;
892
893 if(!allDevNameMap)
894 probe_devices(AL_FALSE);
895
896 if(!device_name && numDevNames > 0)
897 {
898 device_name = allDevNameMap[0].name;
899 pulse_name = allDevNameMap[0].device_name;
900 }
901 else
902 {
903 ALuint i;
904
905 for(i = 0;i < numDevNames;i++)
906 {
907 if(strcmp(device_name, allDevNameMap[i].name) == 0)
908 {
909 pulse_name = allDevNameMap[i].device_name;
910 break;
911 }
912 }
913 if(i == numDevNames)
914 return ALC_INVALID_VALUE;
915 }
916
917 if(pulse_open(device, device_name) == ALC_FALSE)
918 return ALC_INVALID_VALUE;
919
920 data = device->ExtraData;
921 data->device_name = strdup(pulse_name);
922
923 return ALC_NO_ERROR;
924 } //}}}
925
926 static void pulse_close_playback(ALCdevice *device) //{{{
927 {
928 pulse_close(device);
929 } //}}}
930
931 static ALCboolean pulse_reset_playback(ALCdevice *device) //{{{
932 {
933 pulse_data *data = device->ExtraData;
934 pa_stream_flags_t flags = 0;
935 pa_channel_map chanmap;
936
937 pa_threaded_mainloop_lock(data->loop);
938
939 if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
940 {
941 pa_operation *o;
942 o = pa_context_get_sink_info_by_name(data->context, data->device_name, sink_info_callback, device);
943 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
944 pa_threaded_mainloop_wait(data->loop);
945 pa_operation_unref(o);
946 }
947 if(!(device->Flags&DEVICE_FREQUENCY_REQUEST))
948 flags |= PA_STREAM_FIX_RATE;
949
950 flags |= PA_STREAM_EARLY_REQUESTS;
951 flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE;
952 flags |= PA_STREAM_DONT_MOVE;
953
954 switch(device->FmtType)
955 {
956 case DevFmtByte:
957 device->FmtType = DevFmtUByte;
958 /* fall-through */
959 case DevFmtUByte:
960 data->spec.format = PA_SAMPLE_U8;
961 break;
962 case DevFmtUShort:
963 device->FmtType = DevFmtShort;
964 /* fall-through */
965 case DevFmtShort:
966 data->spec.format = PA_SAMPLE_S16NE;
967 break;
968 case DevFmtUInt:
969 device->FmtType = DevFmtInt;
970 /* fall-through */
971 case DevFmtInt:
972 data->spec.format = PA_SAMPLE_S32NE;
973 break;
974 case DevFmtFloat:
975 data->spec.format = PA_SAMPLE_FLOAT32NE;
976 break;
977 }
978 data->spec.rate = device->Frequency;
979 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
980
981 if(pa_sample_spec_valid(&data->spec) == 0)
982 {
983 ERR("Invalid sample format\n");
984 pa_threaded_mainloop_unlock(data->loop);
985 return ALC_FALSE;
986 }
987
988 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
989 {
990 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
991 pa_threaded_mainloop_unlock(data->loop);
992 return ALC_FALSE;
993 }
994 SetDefaultWFXChannelOrder(device);
995
996 data->attr.prebuf = -1;
997 data->attr.fragsize = -1;
998 data->attr.minreq = device->UpdateSize * pa_frame_size(&data->spec);
999 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
1000 data->attr.maxlength = -1;
1001
1002 data->stream = connect_playback_stream(data->device_name, data->loop,
1003 data->context, flags, &data->attr,
1004 &data->spec, &chanmap);
1005 if(!data->stream)
1006 {
1007 pa_threaded_mainloop_unlock(data->loop);
1008 return ALC_FALSE;
1009 }
1010
1011 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
1012
1013 data->spec = *(pa_stream_get_sample_spec(data->stream));
1014 if(device->Frequency != data->spec.rate)
1015 {
1016 size_t frame_size = pa_frame_size(&data->spec);
1017 pa_operation *o;
1018
1019 /* Server updated our playback rate, so modify the buffer attribs
1020 * accordingly. */
1021 data->attr.minreq = (ALuint64)(data->attr.minreq/frame_size) *
1022 data->spec.rate / device->Frequency * frame_size;
1023 data->attr.tlength = data->attr.minreq * maxu(device->NumUpdates, 2);
1024
1025 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
1026 stream_success_callback, device);
1027 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1028 pa_threaded_mainloop_wait(data->loop);
1029 pa_operation_unref(o);
1030
1031 device->Frequency = data->spec.rate;
1032 }
1033
1034 #if PA_CHECK_VERSION(0,9,15)
1035 if(pa_stream_set_buffer_attr_callback)
1036 pa_stream_set_buffer_attr_callback(data->stream, stream_buffer_attr_callback, device);
1037 #endif
1038 pa_stream_set_write_callback(data->stream, stream_write_callback, device);
1039 pa_stream_set_underflow_callback(data->stream, stream_signal_callback, device);
1040
1041 data->attr = *(pa_stream_get_buffer_attr(data->stream));
1042 device->UpdateSize = data->attr.minreq / pa_frame_size(&data->spec);
1043 device->NumUpdates = data->attr.tlength / data->attr.minreq;
1044 if(device->NumUpdates <= 1)
1045 {
1046 pa_operation *o;
1047
1048 ERR("PulseAudio returned minreq=%d, tlength=%d; expect lag or break up\n", data->attr.minreq, data->attr.tlength);
1049
1050 /* Server gave a comparatively large minreq, so modify the tlength. */
1051 device->NumUpdates = 2;
1052 data->attr.tlength = data->attr.minreq * device->NumUpdates;
1053
1054 o = pa_stream_set_buffer_attr(data->stream, &data->attr,
1055 stream_success_callback, device);
1056 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1057 pa_threaded_mainloop_wait(data->loop);
1058 pa_operation_unref(o);
1059 }
1060
1061 data->thread = StartThread(PulseProc, device);
1062 if(!data->thread)
1063 {
1064 #if PA_CHECK_VERSION(0,9,15)
1065 if(pa_stream_set_buffer_attr_callback)
1066 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
1067 #endif
1068 pa_stream_set_write_callback(data->stream, NULL, NULL);
1069 pa_stream_set_underflow_callback(data->stream, NULL, NULL);
1070 pa_stream_disconnect(data->stream);
1071 pa_stream_unref(data->stream);
1072 data->stream = NULL;
1073
1074 pa_threaded_mainloop_unlock(data->loop);
1075 return ALC_FALSE;
1076 }
1077
1078 pa_threaded_mainloop_unlock(data->loop);
1079 return ALC_TRUE;
1080 } //}}}
1081
1082 static void pulse_stop_playback(ALCdevice *device) //{{{
1083 {
1084 pulse_data *data = device->ExtraData;
1085
1086 if(!data->stream)
1087 return;
1088
1089 data->killNow = AL_TRUE;
1090 if(data->thread)
1091 {
1092 pa_threaded_mainloop_signal(data->loop, 0);
1093 StopThread(data->thread);
1094 data->thread = NULL;
1095 }
1096 data->killNow = AL_FALSE;
1097
1098 pa_threaded_mainloop_lock(data->loop);
1099
1100 #if PA_CHECK_VERSION(0,9,15)
1101 if(pa_stream_set_buffer_attr_callback)
1102 pa_stream_set_buffer_attr_callback(data->stream, NULL, NULL);
1103 #endif
1104 pa_stream_set_write_callback(data->stream, NULL, NULL);
1105 pa_stream_set_underflow_callback(data->stream, NULL, NULL);
1106 pa_stream_disconnect(data->stream);
1107 pa_stream_unref(data->stream);
1108 data->stream = NULL;
1109
1110 pa_threaded_mainloop_unlock(data->loop);
1111 } //}}}
1112
1113
1114 static ALCenum pulse_open_capture(ALCdevice *device, const ALCchar *device_name) //{{{
1115 {
1116 const char *pulse_name = NULL;
1117 pa_stream_flags_t flags = 0;
1118 pa_channel_map chanmap;
1119 pulse_data *data;
1120 ALuint samples;
1121
1122 if(!allCaptureDevNameMap)
1123 probe_devices(AL_TRUE);
1124
1125 if(!device_name && numCaptureDevNames > 0)
1126 {
1127 device_name = allCaptureDevNameMap[0].name;
1128 pulse_name = allCaptureDevNameMap[0].device_name;
1129 }
1130 else
1131 {
1132 ALuint i;
1133 for(i = 0;i < numCaptureDevNames;i++)
1134 {
1135 if(strcmp(device_name, allCaptureDevNameMap[i].name) == 0)
1136 {
1137 pulse_name = allCaptureDevNameMap[i].device_name;
1138 break;
1139 }
1140 }
1141 if(i == numCaptureDevNames)
1142 return ALC_INVALID_VALUE;
1143 }
1144
1145 if(pulse_open(device, device_name) == ALC_FALSE)
1146 return ALC_INVALID_VALUE;
1147
1148 data = device->ExtraData;
1149 pa_threaded_mainloop_lock(data->loop);
1150
1151 data->spec.rate = device->Frequency;
1152 data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
1153
1154 switch(device->FmtType)
1155 {
1156 case DevFmtUByte:
1157 data->spec.format = PA_SAMPLE_U8;
1158 break;
1159 case DevFmtShort:
1160 data->spec.format = PA_SAMPLE_S16NE;
1161 break;
1162 case DevFmtInt:
1163 data->spec.format = PA_SAMPLE_S32NE;
1164 break;
1165 case DevFmtFloat:
1166 data->spec.format = PA_SAMPLE_FLOAT32NE;
1167 break;
1168 case DevFmtByte:
1169 case DevFmtUShort:
1170 case DevFmtUInt:
1171 ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));
1172 pa_threaded_mainloop_unlock(data->loop);
1173 goto fail;
1174 }
1175
1176 if(pa_sample_spec_valid(&data->spec) == 0)
1177 {
1178 ERR("Invalid sample format\n");
1179 pa_threaded_mainloop_unlock(data->loop);
1180 goto fail;
1181 }
1182
1183 if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
1184 {
1185 ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
1186 pa_threaded_mainloop_unlock(data->loop);
1187 goto fail;
1188 }
1189
1190 samples = device->UpdateSize * device->NumUpdates;
1191 samples = maxu(samples, 100 * device->Frequency / 1000);
1192
1193 data->attr.minreq = -1;
1194 data->attr.prebuf = -1;
1195 data->attr.maxlength = samples * pa_frame_size(&data->spec);
1196 data->attr.tlength = -1;
1197 data->attr.fragsize = minu(samples, 50*device->Frequency/1000) *
1198 pa_frame_size(&data->spec);
1199
1200 flags |= PA_STREAM_DONT_MOVE;
1201 flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
1202 data->stream = connect_record_stream(pulse_name, data->loop, data->context,
1203 flags, &data->attr, &data->spec,
1204 &chanmap);
1205 if(!data->stream)
1206 {
1207 pa_threaded_mainloop_unlock(data->loop);
1208 goto fail;
1209 }
1210
1211 pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
1212
1213 pa_threaded_mainloop_unlock(data->loop);
1214 return ALC_NO_ERROR;
1215
1216 fail:
1217 pulse_close(device);
1218 return ALC_INVALID_VALUE;
1219 } //}}}
1220
1221 static void pulse_close_capture(ALCdevice *device) //{{{
1222 {
1223 pulse_close(device);
1224 } //}}}
1225
1226 static void pulse_start_capture(ALCdevice *device) //{{{
1227 {
1228 pulse_data *data = device->ExtraData;
1229 pa_operation *o;
1230
1231 pa_threaded_mainloop_lock(data->loop);
1232 o = pa_stream_cork(data->stream, 0, stream_success_callback, device);
1233 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1234 pa_threaded_mainloop_wait(data->loop);
1235 pa_operation_unref(o);
1236 pa_threaded_mainloop_unlock(data->loop);
1237 } //}}}
1238
1239 static void pulse_stop_capture(ALCdevice *device) //{{{
1240 {
1241 pulse_data *data = device->ExtraData;
1242 pa_operation *o;
1243
1244 pa_threaded_mainloop_lock(data->loop);
1245 o = pa_stream_cork(data->stream, 1, stream_success_callback, device);
1246 while(pa_operation_get_state(o) == PA_OPERATION_RUNNING)
1247 pa_threaded_mainloop_wait(data->loop);
1248 pa_operation_unref(o);
1249 pa_threaded_mainloop_unlock(data->loop);
1250 } //}}}
1251
1252 static ALCenum pulse_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint samples) //{{{
1253 {
1254 pulse_data *data = device->ExtraData;
1255 ALCuint todo = samples * pa_frame_size(&data->spec);
1256
1257 pa_threaded_mainloop_lock(data->loop);
1258 /* Capture is done in fragment-sized chunks, so we loop until we get all
1259 * that's available */
1260 data->last_readable -= todo;
1261 while(todo > 0)
1262 {
1263 size_t rem = todo;
1264
1265 if(data->cap_len == 0)
1266 {
1267 pa_stream_state_t state;
1268
1269 state = pa_stream_get_state(data->stream);
1270 if(!PA_STREAM_IS_GOOD(state))
1271 {
1272 aluHandleDisconnect(device);
1273 break;
1274 }
1275 if(pa_stream_peek(data->stream, &data->cap_store, &data->cap_len) < 0)
1276 {
1277 ERR("pa_stream_peek() failed: %s\n",
1278 pa_strerror(pa_context_errno(data->context)));
1279 aluHandleDisconnect(device);
1280 break;
1281 }
1282 data->cap_remain = data->cap_len;
1283 }
1284 if(rem > data->cap_remain)
1285 rem = data->cap_remain;
1286
1287 memcpy(buffer, data->cap_store, rem);
1288
1289 buffer = (ALbyte*)buffer + rem;
1290 todo -= rem;
1291
1292 data->cap_store = (ALbyte*)data->cap_store + rem;
1293 data->cap_remain -= rem;
1294 if(data->cap_remain == 0)
1295 {
1296 pa_stream_drop(data->stream);
1297 data->cap_len = 0;
1298 }
1299 }
1300 if(todo > 0)
1301 memset(buffer, ((device->FmtType==DevFmtUByte) ? 0x80 : 0), todo);
1302 pa_threaded_mainloop_unlock(data->loop);
1303
1304 return ALC_NO_ERROR;
1305 } //}}}
1306
1307 static ALCuint pulse_available_samples(ALCdevice *device) //{{{
1308 {
1309 pulse_data *data = device->ExtraData;
1310 size_t readable = data->cap_remain;
1311
1312 pa_threaded_mainloop_lock(data->loop);
1313 if(device->Connected)
1314 {
1315 ssize_t got = pa_stream_readable_size(data->stream);
1316 if(got > 0 && (size_t)got > data->cap_len)
1317 readable += got - data->cap_len;
1318 }
1319 pa_threaded_mainloop_unlock(data->loop);
1320
1321 if(data->last_readable < readable)
1322 data->last_readable = readable;
1323 return data->last_readable / pa_frame_size(&data->spec);
1324 } //}}}
1325
1326
1327 static const BackendFuncs pulse_funcs = { //{{{
1328 pulse_open_playback,
1329 pulse_close_playback,
1330 pulse_reset_playback,
1331 pulse_stop_playback,
1332 pulse_open_capture,
1333 pulse_close_capture,
1334 pulse_start_capture,
1335 pulse_stop_capture,
1336 pulse_capture_samples,
1337 pulse_available_samples
1338 }; //}}}
1339
1340 ALCboolean alc_pulse_init(BackendFuncs *func_list) //{{{
1341 {
1342 ALCboolean ret = ALC_FALSE;
1343
1344 if(pulse_load())
1345 {
1346 pa_threaded_mainloop *loop;
1347
1348 pulse_ctx_flags = 0;
1349 if(!GetConfigValueBool("pulse", "spawn-server", 0))
1350 pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
1351
1352 if((loop=pa_threaded_mainloop_new()) &&
1353 pa_threaded_mainloop_start(loop) >= 0)
1354 {
1355 pa_context *context;
1356
1357 pa_threaded_mainloop_lock(loop);
1358 context = connect_context(loop, AL_TRUE);
1359 if(context)
1360 {
1361 ret = ALC_TRUE;
1362
1363 pa_context_disconnect(context);
1364 pa_context_unref(context);
1365 }
1366 pa_threaded_mainloop_unlock(loop);
1367 pa_threaded_mainloop_stop(loop);
1368 }
1369 if(loop)
1370 pa_threaded_mainloop_free(loop);
1371 }
1372
1373 if(ret != ALC_FALSE)
1374 *func_list = pulse_funcs;
1375 return ret;
1376 } //}}}
1377
1378 void alc_pulse_deinit(void) //{{{
1379 {
1380 ALuint i;
1381
1382 for(i = 0;i < numDevNames;++i)
1383 {
1384 free(allDevNameMap[i].name);
1385 free(allDevNameMap[i].device_name);
1386 }
1387 free(allDevNameMap);
1388 allDevNameMap = NULL;
1389 numDevNames = 0;
1390
1391 for(i = 0;i < numCaptureDevNames;++i)
1392 {
1393 free(allCaptureDevNameMap[i].name);
1394 free(allCaptureDevNameMap[i].device_name);
1395 }
1396 free(allCaptureDevNameMap);
1397 allCaptureDevNameMap = NULL;
1398 numCaptureDevNames = 0;
1399
1400 #ifdef HAVE_DYNLOAD
1401 if(pa_handle)
1402 CloseLib(pa_handle);
1403 pa_handle = NULL;
1404 #endif
1405 } //}}}
1406
1407 void alc_pulse_probe(enum DevProbe type) //{{{
1408 {
1409 ALuint i;
1410
1411 switch(type)
1412 {
1413 case ALL_DEVICE_PROBE:
1414 for(i = 0;i < numDevNames;++i)
1415 {
1416 free(allDevNameMap[i].name);
1417 free(allDevNameMap[i].device_name);
1418 }
1419 free(allDevNameMap);
1420 allDevNameMap = NULL;
1421 numDevNames = 0;
1422
1423 probe_devices(AL_FALSE);
1424
1425 for(i = 0;i < numDevNames;i++)
1426 AppendAllDeviceList(allDevNameMap[i].name);
1427 break;
1428
1429 case CAPTURE_DEVICE_PROBE:
1430 for(i = 0;i < numCaptureDevNames;++i)
1431 {
1432 free(allCaptureDevNameMap[i].name);
1433 free(allCaptureDevNameMap[i].device_name);
1434 }
1435 free(allCaptureDevNameMap);
1436 allCaptureDevNameMap = NULL;
1437 numCaptureDevNames = 0;
1438
1439 probe_devices(AL_TRUE);
1440
1441 for(i = 0;i < numCaptureDevNames;i++)
1442 AppendCaptureDeviceList(allCaptureDevNameMap[i].name);
1443 break;
1444 }
1445 } //}}}
1446 //}}}
Software OpenAL implementation