Alc/backends/pulseaudio.c

   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.,
  18  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  * Or go to http://www.gnu.org/copyleft/lgpl.html
  20  */
  21
  22 #include "config.h"
  23
  24 #include <string.h>
  25
  26 #include "alMain.h"
  27 #include "alu.h"
  28 #include "threads.h"
  29 #include "compat.h"
  30
  31 #include "backends/base.h"
  32
  33 #include <pulse/pulseaudio.h>
  34
  35 #if PA_API_VERSION == 12
  36
  37 #ifndef PA_CHECK_VERSION
  38 #define PA_CHECK_VERSION(major,minor,micro)                             \
  39     ((PA_MAJOR > (major)) ||                                            \
  40      (PA_MAJOR == (major) && PA_MINOR > (minor)) ||                     \
  41      (PA_MAJOR == (major) && PA_MINOR == (minor) && PA_MICRO >= (micro)))
  42 #endif
  43
  44 #ifdef HAVE_DYNLOAD
  45 static void *pa_handle;
  46 #define MAKE_FUNC(x) static __typeof(x) * p##x
  47 MAKE_FUNC(pa_context_unref);
  48 MAKE_FUNC(pa_sample_spec_valid);
  49 MAKE_FUNC(pa_frame_size);
  50 MAKE_FUNC(pa_stream_drop);
  51 MAKE_FUNC(pa_strerror);
  52 MAKE_FUNC(pa_context_get_state);
  53 MAKE_FUNC(pa_stream_get_state);
  54 MAKE_FUNC(pa_threaded_mainloop_signal);
  55 MAKE_FUNC(pa_stream_peek);
  56 MAKE_FUNC(pa_threaded_mainloop_wait);
  57 MAKE_FUNC(pa_threaded_mainloop_unlock);
  58 MAKE_FUNC(pa_threaded_mainloop_in_thread);
  59 MAKE_FUNC(pa_context_new);
  60 MAKE_FUNC(pa_threaded_mainloop_stop);
  61 MAKE_FUNC(pa_context_disconnect);
  62 MAKE_FUNC(pa_threaded_mainloop_start);
  63 MAKE_FUNC(pa_threaded_mainloop_get_api);
  64 MAKE_FUNC(pa_context_set_state_callback);
  65 MAKE_FUNC(pa_stream_write);
  66 MAKE_FUNC(pa_xfree);
  67 MAKE_FUNC(pa_stream_connect_record);
  68 MAKE_FUNC(pa_stream_connect_playback);
  69 MAKE_FUNC(pa_stream_readable_size);
  70 MAKE_FUNC(pa_stream_writable_size);
  71 MAKE_FUNC(pa_stream_is_corked);
  72 MAKE_FUNC(pa_stream_cork);
  73 MAKE_FUNC(pa_stream_is_suspended);
  74 MAKE_FUNC(pa_stream_get_device_name);
  75 MAKE_FUNC(pa_stream_get_latency);
  76 MAKE_FUNC(pa_path_get_filename);
  77 MAKE_FUNC(pa_get_binary_name);
  78 MAKE_FUNC(pa_threaded_mainloop_free);
  79 MAKE_FUNC(pa_context_errno);
  80 MAKE_FUNC(pa_xmalloc);
  81 MAKE_FUNC(pa_stream_unref);
  82 MAKE_FUNC(pa_threaded_mainloop_accept);
  83 MAKE_FUNC(pa_stream_set_write_callback);
  84 MAKE_FUNC(pa_threaded_mainloop_new);
  85 MAKE_FUNC(pa_context_connect);
  86 MAKE_FUNC(pa_stream_set_buffer_attr);
  87 MAKE_FUNC(pa_stream_get_buffer_attr);
  88 MAKE_FUNC(pa_stream_get_sample_spec);
  89 MAKE_FUNC(pa_stream_get_time);
  90 MAKE_FUNC(pa_stream_set_read_callback);
  91 MAKE_FUNC(pa_stream_set_state_callback);
  92 MAKE_FUNC(pa_stream_set_moved_callback);
  93 MAKE_FUNC(pa_stream_set_underflow_callback);
  94 MAKE_FUNC(pa_stream_new_with_proplist);
  95 MAKE_FUNC(pa_stream_disconnect);
  96 MAKE_FUNC(pa_threaded_mainloop_lock);
  97 MAKE_FUNC(pa_channel_map_init_auto);
  98 MAKE_FUNC(pa_channel_map_parse);
  99 MAKE_FUNC(pa_channel_map_snprint);
 100 MAKE_FUNC(pa_channel_map_equal);
 101 MAKE_FUNC(pa_context_get_server_info);
 102 MAKE_FUNC(pa_context_get_sink_info_by_name);
 103 MAKE_FUNC(pa_context_get_sink_info_list);
 104 MAKE_FUNC(pa_context_get_source_info_by_name);
 105 MAKE_FUNC(pa_context_get_source_info_list);
 106 MAKE_FUNC(pa_operation_get_state);
 107 MAKE_FUNC(pa_operation_unref);
 108 MAKE_FUNC(pa_proplist_new);
 109 MAKE_FUNC(pa_proplist_free);
 110 MAKE_FUNC(pa_proplist_set);
 111 #if PA_CHECK_VERSION(0,9,15)
 112 MAKE_FUNC(pa_channel_map_superset);
 113 MAKE_FUNC(pa_stream_set_buffer_attr_callback);
 114 #endif
 115 #if PA_CHECK_VERSION(0,9,16)
 116 MAKE_FUNC(pa_stream_begin_write);
 117 #endif
 118 #undef MAKE_FUNC
 119
 120 #define pa_context_unref ppa_context_unref
 121 #define pa_sample_spec_valid ppa_sample_spec_valid
 122 #define pa_frame_size ppa_frame_size
 123 #define pa_stream_drop ppa_stream_drop
 124 #define pa_strerror ppa_strerror
 125 #define pa_context_get_state ppa_context_get_state
 126 #define pa_stream_get_state ppa_stream_get_state
 127 #define pa_threaded_mainloop_signal ppa_threaded_mainloop_signal
 128 #define pa_stream_peek ppa_stream_peek
 129 #define pa_threaded_mainloop_wait ppa_threaded_mainloop_wait
 130 #define pa_threaded_mainloop_unlock ppa_threaded_mainloop_unlock
 131 #define pa_threaded_mainloop_in_thread ppa_threaded_mainloop_in_thread
 132 #define pa_context_new ppa_context_new
 133 #define pa_threaded_mainloop_stop ppa_threaded_mainloop_stop
 134 #define pa_context_disconnect ppa_context_disconnect
 135 #define pa_threaded_mainloop_start ppa_threaded_mainloop_start
 136 #define pa_threaded_mainloop_get_api ppa_threaded_mainloop_get_api
 137 #define pa_context_set_state_callback ppa_context_set_state_callback
 138 #define pa_stream_write ppa_stream_write
 139 #define pa_xfree ppa_xfree
 140 #define pa_stream_connect_record ppa_stream_connect_record
 141 #define pa_stream_connect_playback ppa_stream_connect_playback
 142 #define pa_stream_readable_size ppa_stream_readable_size
 143 #define pa_stream_writable_size ppa_stream_writable_size
 144 #define pa_stream_is_corked ppa_stream_is_corked
 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_stream_get_latency ppa_stream_get_latency
 149 #define pa_path_get_filename ppa_path_get_filename
 150 #define pa_get_binary_name ppa_get_binary_name
 151 #define pa_threaded_mainloop_free ppa_threaded_mainloop_free
 152 #define pa_context_errno ppa_context_errno
 153 #define pa_xmalloc ppa_xmalloc
 154 #define pa_stream_unref ppa_stream_unref
 155 #define pa_threaded_mainloop_accept ppa_threaded_mainloop_accept
 156 #define pa_stream_set_write_callback ppa_stream_set_write_callback
 157 #define pa_threaded_mainloop_new ppa_threaded_mainloop_new
 158 #define pa_context_connect ppa_context_connect
 159 #define pa_stream_set_buffer_attr ppa_stream_set_buffer_attr
 160 #define pa_stream_get_buffer_attr ppa_stream_get_buffer_attr
 161 #define pa_stream_get_sample_spec ppa_stream_get_sample_spec
 162 #define pa_stream_get_time ppa_stream_get_time
 163 #define pa_stream_set_read_callback ppa_stream_set_read_callback
 164 #define pa_stream_set_state_callback ppa_stream_set_state_callback
 165 #define pa_stream_set_moved_callback ppa_stream_set_moved_callback
 166 #define pa_stream_set_underflow_callback ppa_stream_set_underflow_callback
 167 #define pa_stream_new_with_proplist ppa_stream_new_with_proplist
 168 #define pa_stream_disconnect ppa_stream_disconnect
 169 #define pa_threaded_mainloop_lock ppa_threaded_mainloop_lock
 170 #define pa_channel_map_init_auto ppa_channel_map_init_auto
 171 #define pa_channel_map_parse ppa_channel_map_parse
 172 #define pa_channel_map_snprint ppa_channel_map_snprint
 173 #define pa_channel_map_equal ppa_channel_map_equal
 174 #define pa_context_get_server_info ppa_context_get_server_info
 175 #define pa_context_get_sink_info_by_name ppa_context_get_sink_info_by_name
 176 #define pa_context_get_sink_info_list ppa_context_get_sink_info_list
 177 #define pa_context_get_source_info_by_name ppa_context_get_source_info_by_name
 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 #define pa_proplist_new ppa_proplist_new
 182 #define pa_proplist_free ppa_proplist_free
 183 #define pa_proplist_set ppa_proplist_set
 184 #if PA_CHECK_VERSION(0,9,15)
 185 #define pa_channel_map_superset ppa_channel_map_superset
 186 #define pa_stream_set_buffer_attr_callback ppa_stream_set_buffer_attr_callback
 187 #endif
 188 #if PA_CHECK_VERSION(0,9,16)
 189 #define pa_stream_begin_write ppa_stream_begin_write
 190 #endif
 191
 192 #endif
 193
 194 static ALCboolean pulse_load(void)
 195 {
 196     ALCboolean ret = ALC_TRUE;
 197 #ifdef HAVE_DYNLOAD
 198     if(!pa_handle)
 199     {
 200 #ifdef _WIN32
 201 #define PALIB "libpulse-0.dll"
 202 #elif defined(__APPLE__) && defined(__MACH__)
 203 #define PALIB "libpulse.0.dylib"
 204 #else
 205 #define PALIB "libpulse.so.0"
 206 #endif
 207         pa_handle = LoadLib(PALIB);
 208         if(!pa_handle)
 209             return ALC_FALSE;
 210
 211 #define LOAD_FUNC(x) do {                                                     \
 212     p##x = GetSymbol(pa_handle, #x);                                          \
 213     if(!(p##x)) {                                                             \
 214         ret = ALC_FALSE;                                                      \
 215     }                                                                         \
 216 } while(0)
 217         LOAD_FUNC(pa_context_unref);
 218         LOAD_FUNC(pa_sample_spec_valid);
 219         LOAD_FUNC(pa_stream_drop);
 220         LOAD_FUNC(pa_frame_size);
 221         LOAD_FUNC(pa_strerror);
 222         LOAD_FUNC(pa_context_get_state);
 223         LOAD_FUNC(pa_stream_get_state);
 224         LOAD_FUNC(pa_threaded_mainloop_signal);
 225         LOAD_FUNC(pa_stream_peek);
 226         LOAD_FUNC(pa_threaded_mainloop_wait);
 227         LOAD_FUNC(pa_threaded_mainloop_unlock);
 228         LOAD_FUNC(pa_threaded_mainloop_in_thread);
 229         LOAD_FUNC(pa_context_new);
 230         LOAD_FUNC(pa_threaded_mainloop_stop);
 231         LOAD_FUNC(pa_context_disconnect);
 232         LOAD_FUNC(pa_threaded_mainloop_start);
 233         LOAD_FUNC(pa_threaded_mainloop_get_api);
 234         LOAD_FUNC(pa_context_set_state_callback);
 235         LOAD_FUNC(pa_stream_write);
 236         LOAD_FUNC(pa_xfree);
 237         LOAD_FUNC(pa_stream_connect_record);
 238         LOAD_FUNC(pa_stream_connect_playback);
 239         LOAD_FUNC(pa_stream_readable_size);
 240         LOAD_FUNC(pa_stream_writable_size);
 241         LOAD_FUNC(pa_stream_is_corked);
 242         LOAD_FUNC(pa_stream_cork);
 243         LOAD_FUNC(pa_stream_is_suspended);
 244         LOAD_FUNC(pa_stream_get_device_name);
 245         LOAD_FUNC(pa_stream_get_latency);
 246         LOAD_FUNC(pa_path_get_filename);
 247         LOAD_FUNC(pa_get_binary_name);
 248         LOAD_FUNC(pa_threaded_mainloop_free);
 249         LOAD_FUNC(pa_context_errno);
 250         LOAD_FUNC(pa_xmalloc);
 251         LOAD_FUNC(pa_stream_unref);
 252         LOAD_FUNC(pa_threaded_mainloop_accept);
 253         LOAD_FUNC(pa_stream_set_write_callback);
 254         LOAD_FUNC(pa_threaded_mainloop_new);
 255         LOAD_FUNC(pa_context_connect);
 256         LOAD_FUNC(pa_stream_set_buffer_attr);
 257         LOAD_FUNC(pa_stream_get_buffer_attr);
 258         LOAD_FUNC(pa_stream_get_sample_spec);
 259         LOAD_FUNC(pa_stream_get_time);
 260         LOAD_FUNC(pa_stream_set_read_callback);
 261         LOAD_FUNC(pa_stream_set_state_callback);
 262         LOAD_FUNC(pa_stream_set_moved_callback);
 263         LOAD_FUNC(pa_stream_set_underflow_callback);
 264         LOAD_FUNC(pa_stream_new_with_proplist);
 265         LOAD_FUNC(pa_stream_disconnect);
 266         LOAD_FUNC(pa_threaded_mainloop_lock);
 267         LOAD_FUNC(pa_channel_map_init_auto);
 268         LOAD_FUNC(pa_channel_map_parse);
 269         LOAD_FUNC(pa_channel_map_snprint);
 270         LOAD_FUNC(pa_channel_map_equal);
 271         LOAD_FUNC(pa_context_get_server_info);
 272         LOAD_FUNC(pa_context_get_sink_info_by_name);
 273         LOAD_FUNC(pa_context_get_sink_info_list);
 274         LOAD_FUNC(pa_context_get_source_info_by_name);
 275         LOAD_FUNC(pa_context_get_source_info_list);
 276         LOAD_FUNC(pa_operation_get_state);
 277         LOAD_FUNC(pa_operation_unref);
 278         LOAD_FUNC(pa_proplist_new);
 279         LOAD_FUNC(pa_proplist_free);
 280         LOAD_FUNC(pa_proplist_set);
 281 #undef LOAD_FUNC
 282 #define LOAD_OPTIONAL_FUNC(x) do {                                            \
 283     p##x = GetSymbol(pa_handle, #x);                                          \
 284 } while(0)
 285 #if PA_CHECK_VERSION(0,9,15)
 286         LOAD_OPTIONAL_FUNC(pa_channel_map_superset);
 287         LOAD_OPTIONAL_FUNC(pa_stream_set_buffer_attr_callback);
 288 #endif
 289 #if PA_CHECK_VERSION(0,9,16)
 290         LOAD_OPTIONAL_FUNC(pa_stream_begin_write);
 291 #endif
 292 #undef LOAD_OPTIONAL_FUNC
 293
 294         if(ret == ALC_FALSE)
 295         {
 296             CloseLib(pa_handle);
 297             pa_handle = NULL;
 298         }
 299     }
 300 #endif /* HAVE_DYNLOAD */
 301     return ret;
 302 }
 303
 304
 305 /* Global flags and properties */
 306 static pa_context_flags_t pulse_ctx_flags;
 307 static pa_proplist *prop_filter;
 308
 309
 310 /* PulseAudio Event Callbacks */
 311 static void context_state_callback(pa_context *context, void *pdata)
 312 {
 313     pa_threaded_mainloop *loop = pdata;
 314     pa_context_state_t state;
 315
 316     state = pa_context_get_state(context);
 317     if(state == PA_CONTEXT_READY || !PA_CONTEXT_IS_GOOD(state))
 318         pa_threaded_mainloop_signal(loop, 0);
 319 }
 320
 321 static void stream_state_callback(pa_stream *stream, void *pdata)
 322 {
 323     pa_threaded_mainloop *loop = pdata;
 324     pa_stream_state_t state;
 325
 326     state = pa_stream_get_state(stream);
 327     if(state == PA_STREAM_READY || !PA_STREAM_IS_GOOD(state))
 328         pa_threaded_mainloop_signal(loop, 0);
 329 }
 330
 331 static void stream_success_callback(pa_stream *UNUSED(stream), int UNUSED(success), void *pdata)
 332 {
 333     pa_threaded_mainloop *loop = pdata;
 334     pa_threaded_mainloop_signal(loop, 0);
 335 }
 336
 337 static void wait_for_operation(pa_operation *op, pa_threaded_mainloop *loop)
 338 {
 339     if(op)
 340     {
 341         while(pa_operation_get_state(op) == PA_OPERATION_RUNNING)
 342             pa_threaded_mainloop_wait(loop);
 343         pa_operation_unref(op);
 344     }
 345 }
 346
 347
 348 static pa_context *connect_context(pa_threaded_mainloop *loop, ALboolean silent)
 349 {
 350     const char *name = "OpenAL Soft";
 351     char path_name[PATH_MAX];
 352     pa_context_state_t state;
 353     pa_context *context;
 354     int err;
 355
 356     if(pa_get_binary_name(path_name, sizeof(path_name)))
 357         name = pa_path_get_filename(path_name);
 358
 359     context = pa_context_new(pa_threaded_mainloop_get_api(loop), name);
 360     if(!context)
 361     {
 362         ERR("pa_context_new() failed\n");
 363         return NULL;
 364     }
 365
 366     pa_context_set_state_callback(context, context_state_callback, loop);
 367
 368     if((err=pa_context_connect(context, NULL, pulse_ctx_flags, NULL)) >= 0)
 369     {
 370         while((state=pa_context_get_state(context)) != PA_CONTEXT_READY)
 371         {
 372             if(!PA_CONTEXT_IS_GOOD(state))
 373             {
 374                 err = pa_context_errno(context);
 375                 if(err > 0)  err = -err;
 376                 break;
 377             }
 378
 379             pa_threaded_mainloop_wait(loop);
 380         }
 381     }
 382     pa_context_set_state_callback(context, NULL, NULL);
 383
 384     if(err < 0)
 385     {
 386         if(!silent)
 387             ERR("Context did not connect: %s\n", pa_strerror(err));
 388         pa_context_unref(context);
 389         return NULL;
 390     }
 391
 392     return context;
 393 }
 394
 395
 396 static ALCboolean pulse_open(pa_threaded_mainloop **loop, pa_context **context,
 397                              void(*state_cb)(pa_context*,void*), void *ptr)
 398 {
 399     if(!(*loop = pa_threaded_mainloop_new()))
 400     {
 401         ERR("pa_threaded_mainloop_new() failed!\n");
 402         return ALC_FALSE;
 403     }
 404     if(pa_threaded_mainloop_start(*loop) < 0)
 405     {
 406         ERR("pa_threaded_mainloop_start() failed\n");
 407         goto error;
 408     }
 409
 410     pa_threaded_mainloop_lock(*loop);
 411
 412     *context = connect_context(*loop, AL_FALSE);
 413     if(!*context)
 414     {
 415         pa_threaded_mainloop_unlock(*loop);
 416         pa_threaded_mainloop_stop(*loop);
 417         goto error;
 418     }
 419     pa_context_set_state_callback(*context, state_cb, ptr);
 420
 421     pa_threaded_mainloop_unlock(*loop);
 422     return ALC_TRUE;
 423
 424 error:
 425     pa_threaded_mainloop_free(*loop);
 426     *loop = NULL;
 427
 428     return ALC_FALSE;
 429 }
 430
 431 static void pulse_close(pa_threaded_mainloop *loop, pa_context *context,
 432                         pa_stream *stream)
 433 {
 434     pa_threaded_mainloop_lock(loop);
 435
 436     if(stream)
 437     {
 438         pa_stream_set_state_callback(stream, NULL, NULL);
 439         pa_stream_set_moved_callback(stream, NULL, NULL);
 440         pa_stream_set_write_callback(stream, NULL, NULL);
 441 #if PA_CHECK_VERSION(0,9,15)
 442         if(pa_stream_set_buffer_attr_callback)
 443             pa_stream_set_buffer_attr_callback(stream, NULL, NULL);
 444 #endif
 445         pa_stream_disconnect(stream);
 446         pa_stream_unref(stream);
 447     }
 448
 449     pa_context_disconnect(context);
 450     pa_context_unref(context);
 451
 452     pa_threaded_mainloop_unlock(loop);
 453
 454     pa_threaded_mainloop_stop(loop);
 455     pa_threaded_mainloop_free(loop);
 456 }
 457
 458
 459 typedef struct {
 460     al_string name;
 461     al_string device_name;
 462 } DevMap;
 463 TYPEDEF_VECTOR(DevMap, vector_DevMap)
 464
 465 static vector_DevMap PlaybackDevices;
 466 static vector_DevMap CaptureDevices;
 467
 468 static void clear_devlist(vector_DevMap *list)
 469 {
 470 #define DEINIT_STRS(i)  (AL_STRING_DEINIT((i)->name),AL_STRING_DEINIT((i)->device_name))
 471     VECTOR_FOR_EACH(DevMap, *list, DEINIT_STRS);
 472 #undef DEINIT_STRS
 473     VECTOR_RESIZE(*list, 0);
 474 }
 475
 476
 477 typedef struct ALCpulsePlayback {
 478     DERIVE_FROM_TYPE(ALCbackend);
 479
 480     al_string device_name;
 481
 482     pa_buffer_attr attr;
 483     pa_sample_spec spec;
 484
 485     pa_threaded_mainloop *loop;
 486
 487     pa_stream *stream;
 488     pa_context *context;
 489
 490     volatile ALboolean killNow;
 491     althrd_t thread;
 492 } ALCpulsePlayback;
 493
 494 static void ALCpulsePlayback_deviceCallback(pa_context *context, const pa_sink_info *info, int eol, void *pdata);
 495 static void ALCpulsePlayback_probeDevices(void);
 496
 497 static void ALCpulsePlayback_bufferAttrCallback(pa_stream *stream, void *pdata);
 498 static void ALCpulsePlayback_contextStateCallback(pa_context *context, void *pdata);
 499 static void ALCpulsePlayback_streamStateCallback(pa_stream *stream, void *pdata);
 500 static void ALCpulsePlayback_streamWriteCallback(pa_stream *p, size_t nbytes, void *userdata);
 501 static void ALCpulsePlayback_sinkInfoCallback(pa_context *context, const pa_sink_info *info, int eol, void *pdata);
 502 static void ALCpulsePlayback_sinkNameCallback(pa_context *context, const pa_sink_info *info, int eol, void *pdata);
 503 static void ALCpulsePlayback_streamMovedCallback(pa_stream *stream, void *pdata);
 504 static pa_stream *ALCpulsePlayback_connectStream(const char *device_name, pa_threaded_mainloop *loop,
 505                                                  pa_context *context, pa_stream_flags_t flags,
 506                                                  pa_buffer_attr *attr, pa_sample_spec *spec,
 507                                                  pa_channel_map *chanmap);
 508 static int ALCpulsePlayback_mixerProc(void *ptr);
 509
 510 static void ALCpulsePlayback_Construct(ALCpulsePlayback *self, ALCdevice *device);
 511 static void ALCpulsePlayback_Destruct(ALCpulsePlayback *self);
 512 static ALCenum ALCpulsePlayback_open(ALCpulsePlayback *self, const ALCchar *name);
 513 static void ALCpulsePlayback_close(ALCpulsePlayback *self);
 514 static ALCboolean ALCpulsePlayback_reset(ALCpulsePlayback *self);
 515 static ALCboolean ALCpulsePlayback_start(ALCpulsePlayback *self);
 516 static void ALCpulsePlayback_stop(ALCpulsePlayback *self);
 517 static DECLARE_FORWARD2(ALCpulsePlayback, ALCbackend, ALCenum, captureSamples, ALCvoid*, ALCuint)
 518 static DECLARE_FORWARD(ALCpulsePlayback, ALCbackend, ALCuint, availableSamples)
 519 static ALint64 ALCpulsePlayback_getLatency(ALCpulsePlayback *self);
 520 static void ALCpulsePlayback_lock(ALCpulsePlayback *self);
 521 static void ALCpulsePlayback_unlock(ALCpulsePlayback *self);
 522 DECLARE_DEFAULT_ALLOCATORS(ALCpulsePlayback)
 523
 524 DEFINE_ALCBACKEND_VTABLE(ALCpulsePlayback);
 525
 526
 527 static void ALCpulsePlayback_Construct(ALCpulsePlayback *self, ALCdevice *device)
 528 {
 529     ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
 530     SET_VTABLE2(ALCpulsePlayback, ALCbackend, self);
 531
 532     AL_STRING_INIT(self->device_name);
 533 }
 534
 535 static void ALCpulsePlayback_Destruct(ALCpulsePlayback *self)
 536 {
 537     AL_STRING_DEINIT(self->device_name);
 538     ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
 539 }
 540
 541
 542 static void ALCpulsePlayback_deviceCallback(pa_context *UNUSED(context), const pa_sink_info *info, int eol, void *pdata)
 543 {
 544     pa_threaded_mainloop *loop = pdata;
 545     const DevMap *iter;
 546     DevMap entry;
 547
 548     if(eol)
 549     {
 550         pa_threaded_mainloop_signal(loop, 0);
 551         return;
 552     }
 553
 554 #define MATCH_INFO_NAME(iter) (al_string_cmp_cstr((iter)->device_name, info->name) == 0)
 555     VECTOR_FIND_IF(iter, const DevMap, PlaybackDevices, MATCH_INFO_NAME);
 556 #undef MATCH_INFO_NAME
 557     if(iter != VECTOR_ITER_END(PlaybackDevices))
 558         return;
 559
 560     TRACE("Got device \"%s\", \"%s\"\n", info->description, info->name);
 561
 562     AL_STRING_INIT(entry.name);
 563     AL_STRING_INIT(entry.device_name);
 564
 565     al_string_copy_cstr(&entry.name, info->description);
 566     al_string_copy_cstr(&entry.device_name, info->name);
 567
 568     VECTOR_PUSH_BACK(PlaybackDevices, entry);
 569 }
 570
 571 static void ALCpulsePlayback_probeDevices(void)
 572 {
 573     pa_threaded_mainloop *loop;
 574
 575     clear_devlist(&PlaybackDevices);
 576
 577     if((loop=pa_threaded_mainloop_new()) &&
 578        pa_threaded_mainloop_start(loop) >= 0)
 579     {
 580         pa_context *context;
 581
 582         pa_threaded_mainloop_lock(loop);
 583         context = connect_context(loop, AL_FALSE);
 584         if(context)
 585         {
 586             pa_operation *o;
 587             pa_stream_flags_t flags;
 588             pa_sample_spec spec;
 589             pa_stream *stream;
 590
 591             flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
 592                     PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
 593
 594             spec.format = PA_SAMPLE_S16NE;
 595             spec.rate = 44100;
 596             spec.channels = 2;
 597
 598             stream = ALCpulsePlayback_connectStream(NULL, loop, context, flags,
 599                                                     NULL, &spec, NULL);
 600             if(stream)
 601             {
 602                 o = pa_context_get_sink_info_by_name(context, pa_stream_get_device_name(stream),
 603                                                      ALCpulsePlayback_deviceCallback, loop);
 604                 wait_for_operation(o, loop);
 605
 606                 pa_stream_disconnect(stream);
 607                 pa_stream_unref(stream);
 608                 stream = NULL;
 609             }
 610
 611             o = pa_context_get_sink_info_list(context, ALCpulsePlayback_deviceCallback, loop);
 612             wait_for_operation(o, loop);
 613
 614             pa_context_disconnect(context);
 615             pa_context_unref(context);
 616         }
 617         pa_threaded_mainloop_unlock(loop);
 618         pa_threaded_mainloop_stop(loop);
 619     }
 620     if(loop)
 621         pa_threaded_mainloop_free(loop);
 622 }
 623
 624
 625 static void ALCpulsePlayback_bufferAttrCallback(pa_stream *stream, void *pdata)
 626 {
 627     ALCpulsePlayback *self = pdata;
 628
 629     self->attr = *pa_stream_get_buffer_attr(stream);
 630     TRACE("minreq=%d, tlength=%d, prebuf=%d\n", self->attr.minreq, self->attr.tlength, self->attr.prebuf);
 631 }
 632
 633 static void ALCpulsePlayback_contextStateCallback(pa_context *context, void *pdata)
 634 {
 635     ALCpulsePlayback *self = pdata;
 636     if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
 637     {
 638         ERR("Received context failure!\n");
 639         aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice);
 640     }
 641     pa_threaded_mainloop_signal(self->loop, 0);
 642 }
 643
 644 static void ALCpulsePlayback_streamStateCallback(pa_stream *stream, void *pdata)
 645 {
 646     ALCpulsePlayback *self = pdata;
 647     if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
 648     {
 649         ERR("Received stream failure!\n");
 650         aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice);
 651     }
 652     pa_threaded_mainloop_signal(self->loop, 0);
 653 }
 654
 655 static void ALCpulsePlayback_streamWriteCallback(pa_stream* UNUSED(p), size_t UNUSED(nbytes), void *pdata)
 656 {
 657     ALCpulsePlayback *self = pdata;
 658     pa_threaded_mainloop_signal(self->loop, 0);
 659 }
 660
 661 static void ALCpulsePlayback_sinkInfoCallback(pa_context *UNUSED(context), const pa_sink_info *info, int eol, void *pdata)
 662 {
 663     ALCpulsePlayback *self = pdata;
 664     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
 665     const struct {
 666         const char *str;
 667         enum DevFmtChannels chans;
 668     } chanmaps[] = {
 669         { "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right",
 670           DevFmtX71 },
 671         { "front-left,front-right,front-center,lfe,rear-center,side-left,side-right",
 672           DevFmtX61 },
 673         { "front-left,front-right,front-center,lfe,side-left,side-right",
 674           DevFmtX51 },
 675         { "front-left,front-right,front-center,lfe,rear-left,rear-right",
 676           DevFmtX51Rear },
 677         { "front-left,front-right,rear-left,rear-right", DevFmtQuad },
 678         { "front-left,front-right", DevFmtStereo },
 679         { "mono", DevFmtMono },
 680         { NULL, 0 }
 681     };
 682     int i;
 683
 684     if(eol)
 685     {
 686         pa_threaded_mainloop_signal(self->loop, 0);
 687         return;
 688     }
 689
 690     for(i = 0;chanmaps[i].str;i++)
 691     {
 692         pa_channel_map map;
 693         if(!pa_channel_map_parse(&map, chanmaps[i].str))
 694             continue;
 695
 696         if(pa_channel_map_equal(&info->channel_map, &map)
 697 #if PA_CHECK_VERSION(0,9,15)
 698            || (pa_channel_map_superset &&
 699                pa_channel_map_superset(&info->channel_map, &map))
 700 #endif
 701             )
 702         {
 703             if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
 704                 device->FmtChans = chanmaps[i].chans;
 705             break;
 706         }
 707     }
 708
 709     device->IsHeadphones = (device->FmtChans == DevFmtStereo && info->active_port &&
 710                             strcmp(info->active_port->name, "analog-output-headphones") == 0);
 711
 712     if(!chanmaps[i].str)
 713     {
 714         char chanmap_str[PA_CHANNEL_MAP_SNPRINT_MAX] = "";
 715         pa_channel_map_snprint(chanmap_str, sizeof(chanmap_str), &info->channel_map);
 716         WARN("Failed to find format for channel map:\n    %s\n", chanmap_str);
 717     }
 718 }
 719
 720 static void ALCpulsePlayback_sinkNameCallback(pa_context *UNUSED(context), const pa_sink_info *info, int eol, void *pdata)
 721 {
 722     ALCpulsePlayback *self = pdata;
 723     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
 724
 725     if(eol)
 726     {
 727         pa_threaded_mainloop_signal(self->loop, 0);
 728         return;
 729     }
 730
 731     al_string_copy_cstr(&device->DeviceName, info->description);
 732 }
 733
 734
 735 static void ALCpulsePlayback_streamMovedCallback(pa_stream *stream, void *pdata)
 736 {
 737     ALCpulsePlayback *self = pdata;
 738
 739     al_string_copy_cstr(&self->device_name, pa_stream_get_device_name(stream));
 740
 741     TRACE("Stream moved to %s\n", al_string_get_cstr(self->device_name));
 742 }
 743
 744
 745 static pa_stream *ALCpulsePlayback_connectStream(const char *device_name,
 746     pa_threaded_mainloop *loop, pa_context *context,
 747     pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
 748     pa_channel_map *chanmap)
 749 {
 750     pa_stream_state_t state;
 751     pa_stream *stream;
 752
 753     stream = pa_stream_new_with_proplist(context, "Playback Stream", spec, chanmap, prop_filter);
 754     if(!stream)
 755     {
 756         ERR("pa_stream_new_with_proplist() failed: %s\n", pa_strerror(pa_context_errno(context)));
 757         return NULL;
 758     }
 759
 760     pa_stream_set_state_callback(stream, stream_state_callback, loop);
 761
 762     if(pa_stream_connect_playback(stream, device_name, attr, flags, NULL, NULL) < 0)
 763     {
 764         ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
 765         pa_stream_unref(stream);
 766         return NULL;
 767     }
 768
 769     while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
 770     {
 771         if(!PA_STREAM_IS_GOOD(state))
 772         {
 773             ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
 774             pa_stream_unref(stream);
 775             return NULL;
 776         }
 777
 778         pa_threaded_mainloop_wait(loop);
 779     }
 780     pa_stream_set_state_callback(stream, NULL, NULL);
 781
 782     return stream;
 783 }
 784
 785
 786 static int ALCpulsePlayback_mixerProc(void *ptr)
 787 {
 788     ALCpulsePlayback *self = ptr;
 789     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
 790     ALuint buffer_size;
 791     ALint update_size;
 792     size_t frame_size;
 793     ssize_t len;
 794
 795     SetRTPriority();
 796     althrd_setname(althrd_current(), MIXER_THREAD_NAME);
 797
 798     pa_threaded_mainloop_lock(self->loop);
 799     frame_size = pa_frame_size(&self->spec);
 800     update_size = device->UpdateSize * frame_size;
 801
 802     /* Sanitize buffer metrics, in case we actually have less than what we
 803      * asked for. */
 804     buffer_size = minu(update_size*device->NumUpdates, self->attr.tlength);
 805     update_size = minu(update_size, buffer_size/2);
 806     do {
 807         len = pa_stream_writable_size(self->stream) - self->attr.tlength +
 808               buffer_size;
 809         if(len < update_size)
 810         {
 811             if(pa_stream_is_corked(self->stream) == 1)
 812             {
 813                 pa_operation *o;
 814                 o = pa_stream_cork(self->stream, 0, NULL, NULL);
 815                 if(o) pa_operation_unref(o);
 816             }
 817             pa_threaded_mainloop_wait(self->loop);
 818             continue;
 819         }
 820         len -= len%update_size;
 821
 822         while(len > 0)
 823         {
 824             size_t newlen = len;
 825             void *buf;
 826             pa_free_cb_t free_func = NULL;
 827
 828 #if PA_CHECK_VERSION(0,9,16)
 829             if(!pa_stream_begin_write ||
 830                pa_stream_begin_write(self->stream, &buf, &newlen) < 0)
 831 #endif
 832             {
 833                 buf = pa_xmalloc(newlen);
 834                 free_func = pa_xfree;
 835             }
 836
 837             aluMixData(device, buf, newlen/frame_size);
 838
 839             pa_stream_write(self->stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
 840             len -= newlen;
 841         }
 842     } while(!self->killNow && device->Connected);
 843     pa_threaded_mainloop_unlock(self->loop);
 844
 845     return 0;
 846 }
 847
 848
 849 static ALCenum ALCpulsePlayback_open(ALCpulsePlayback *self, const ALCchar *name)
 850 {
 851     const char *pulse_name = NULL;
 852     pa_stream_flags_t flags;
 853     pa_sample_spec spec;
 854     pa_operation *o;
 855
 856     if(name)
 857     {
 858         const DevMap *iter;
 859
 860         if(VECTOR_SIZE(PlaybackDevices) == 0)
 861             ALCpulsePlayback_probeDevices();
 862
 863 #define MATCH_NAME(iter) (al_string_cmp_cstr((iter)->name, name) == 0)
 864         VECTOR_FIND_IF(iter, const DevMap, PlaybackDevices, MATCH_NAME);
 865 #undef MATCH_NAME
 866         if(iter == VECTOR_ITER_END(PlaybackDevices))
 867             return ALC_INVALID_VALUE;
 868         pulse_name = al_string_get_cstr(iter->device_name);
 869     }
 870
 871     if(!pulse_open(&self->loop, &self->context, ALCpulsePlayback_contextStateCallback, self))
 872         return ALC_INVALID_VALUE;
 873
 874     pa_threaded_mainloop_lock(self->loop);
 875
 876     flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
 877             PA_STREAM_FIX_CHANNELS;
 878     if(!GetConfigValueBool("pulse", "allow-moves", 0))
 879         flags |= PA_STREAM_DONT_MOVE;
 880
 881     spec.format = PA_SAMPLE_S16NE;
 882     spec.rate = 44100;
 883     spec.channels = 2;
 884
 885     TRACE("Connecting to \"%s\"\n", pulse_name ? pulse_name : "(default)");
 886     self->stream = ALCpulsePlayback_connectStream(pulse_name, self->loop, self->context,
 887                                                   flags, NULL, &spec, NULL);
 888     if(!self->stream)
 889     {
 890         pa_threaded_mainloop_unlock(self->loop);
 891         pulse_close(self->loop, self->context, self->stream);
 892         self->loop = NULL;
 893         self->context = NULL;
 894         return ALC_INVALID_VALUE;
 895     }
 896     pa_stream_set_moved_callback(self->stream, ALCpulsePlayback_streamMovedCallback, self);
 897
 898     al_string_copy_cstr(&self->device_name, pa_stream_get_device_name(self->stream));
 899     o = pa_context_get_sink_info_by_name(self->context,
 900                                          al_string_get_cstr(self->device_name),
 901                                          ALCpulsePlayback_sinkNameCallback, self);
 902     wait_for_operation(o, self->loop);
 903
 904     pa_threaded_mainloop_unlock(self->loop);
 905
 906     return ALC_NO_ERROR;
 907 }
 908
 909 static void ALCpulsePlayback_close(ALCpulsePlayback *self)
 910 {
 911     pulse_close(self->loop, self->context, self->stream);
 912     self->loop = NULL;
 913     self->context = NULL;
 914     self->stream = NULL;
 915
 916     al_string_clear(&self->device_name);
 917 }
 918
 919 static ALCboolean ALCpulsePlayback_reset(ALCpulsePlayback *self)
 920 {
 921     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
 922     pa_stream_flags_t flags = 0;
 923     const char *mapname = NULL;
 924     pa_channel_map chanmap;
 925     pa_operation *o;
 926     ALuint len;
 927
 928     pa_threaded_mainloop_lock(self->loop);
 929
 930     if(self->stream)
 931     {
 932         pa_stream_set_moved_callback(self->stream, NULL, NULL);
 933 #if PA_CHECK_VERSION(0,9,15)
 934         if(pa_stream_set_buffer_attr_callback)
 935             pa_stream_set_buffer_attr_callback(self->stream, NULL, NULL);
 936 #endif
 937         pa_stream_disconnect(self->stream);
 938         pa_stream_unref(self->stream);
 939         self->stream = NULL;
 940     }
 941
 942     o = pa_context_get_sink_info_by_name(self->context, al_string_get_cstr(self->device_name),
 943                                          ALCpulsePlayback_sinkInfoCallback, self);
 944     wait_for_operation(o, self->loop);
 945
 946     if(!(device->Flags&DEVICE_FREQUENCY_REQUEST))
 947         flags |= PA_STREAM_FIX_RATE;
 948     flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE;
 949     flags |= PA_STREAM_ADJUST_LATENCY;
 950     flags |= PA_STREAM_START_CORKED;
 951     if(!GetConfigValueBool("pulse", "allow-moves", 0))
 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             self->spec.format = PA_SAMPLE_U8;
 961             break;
 962         case DevFmtUShort:
 963             device->FmtType = DevFmtShort;
 964             /* fall-through */
 965         case DevFmtShort:
 966             self->spec.format = PA_SAMPLE_S16NE;
 967             break;
 968         case DevFmtUInt:
 969             device->FmtType = DevFmtInt;
 970             /* fall-through */
 971         case DevFmtInt:
 972             self->spec.format = PA_SAMPLE_S32NE;
 973             break;
 974         case DevFmtFloat:
 975             self->spec.format = PA_SAMPLE_FLOAT32NE;
 976             break;
 977     }
 978     self->spec.rate = device->Frequency;
 979     self->spec.channels = ChannelsFromDevFmt(device->FmtChans);
 980
 981     if(pa_sample_spec_valid(&self->spec) == 0)
 982     {
 983         ERR("Invalid sample format\n");
 984         pa_threaded_mainloop_unlock(self->loop);
 985         return ALC_FALSE;
 986     }
 987
 988     switch(device->FmtChans)
 989     {
 990         case DevFmtMono:
 991             mapname = "mono";
 992             break;
 993         case DevFmtStereo:
 994             mapname = "front-left,front-right";
 995             break;
 996         case DevFmtQuad:
 997             mapname = "front-left,front-right,rear-left,rear-right";
 998             break;
 999         case DevFmtX51:
1000             mapname = "front-left,front-right,front-center,lfe,side-left,side-right";
1001             break;
1002         case DevFmtX51Rear:
1003             mapname = "front-left,front-right,front-center,lfe,rear-left,rear-right";
1004             break;
1005         case DevFmtX61:
1006             mapname = "front-left,front-right,front-center,lfe,rear-center,side-left,side-right";
1007             break;
1008         case DevFmtX71:
1009             mapname = "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right";
1010             break;
1011     }
1012     if(!pa_channel_map_parse(&chanmap, mapname))
1013     {
1014         ERR("Failed to build channel map for %s\n", DevFmtChannelsString(device->FmtChans));
1015         pa_threaded_mainloop_unlock(self->loop);
1016         return ALC_FALSE;
1017     }
1018     SetDefaultWFXChannelOrder(device);
1019
1020     self->attr.fragsize = -1;
1021     self->attr.prebuf = 0;
1022     self->attr.minreq = device->UpdateSize * pa_frame_size(&self->spec);
1023     self->attr.tlength = self->attr.minreq * maxu(device->NumUpdates, 2);
1024     self->attr.maxlength = -1;
1025
1026     self->stream = ALCpulsePlayback_connectStream(al_string_get_cstr(self->device_name),
1027                                                   self->loop, self->context, flags,
1028                                                   &self->attr, &self->spec, &chanmap);
1029     if(!self->stream)
1030     {
1031         pa_threaded_mainloop_unlock(self->loop);
1032         return ALC_FALSE;
1033     }
1034     pa_stream_set_state_callback(self->stream, ALCpulsePlayback_streamStateCallback, self);
1035     pa_stream_set_moved_callback(self->stream, ALCpulsePlayback_streamMovedCallback, self);
1036     pa_stream_set_write_callback(self->stream, ALCpulsePlayback_streamWriteCallback, self);
1037
1038     self->spec = *(pa_stream_get_sample_spec(self->stream));
1039     if(device->Frequency != self->spec.rate)
1040     {
1041         /* Server updated our playback rate, so modify the buffer attribs
1042          * accordingly. */
1043         device->NumUpdates = (ALuint)((ALdouble)device->NumUpdates / device->Frequency *
1044                                       self->spec.rate + 0.5);
1045         self->attr.minreq  = device->UpdateSize * pa_frame_size(&self->spec);
1046         self->attr.tlength = self->attr.minreq * clampu(device->NumUpdates, 2, 16);
1047         self->attr.maxlength = -1;
1048         self->attr.prebuf  = 0;
1049
1050         o = pa_stream_set_buffer_attr(self->stream, &self->attr,
1051                                       stream_success_callback, self->loop);
1052         wait_for_operation(o, self->loop);
1053
1054         device->Frequency = self->spec.rate;
1055     }
1056
1057 #if PA_CHECK_VERSION(0,9,15)
1058     if(pa_stream_set_buffer_attr_callback)
1059         pa_stream_set_buffer_attr_callback(self->stream, ALCpulsePlayback_bufferAttrCallback, self);
1060 #endif
1061     ALCpulsePlayback_bufferAttrCallback(self->stream, self);
1062
1063     len = self->attr.minreq / pa_frame_size(&self->spec);
1064     device->NumUpdates = (ALuint)((ALdouble)device->NumUpdates/len*device->UpdateSize + 0.5);
1065     device->NumUpdates = clampu(device->NumUpdates, 2, 16);
1066     device->UpdateSize = len;
1067
1068     pa_threaded_mainloop_unlock(self->loop);
1069     return ALC_TRUE;
1070 }
1071
1072 static ALCboolean ALCpulsePlayback_start(ALCpulsePlayback *self)
1073 {
1074     self->killNow = AL_FALSE;
1075     if(althrd_create(&self->thread, ALCpulsePlayback_mixerProc, self) != althrd_success)
1076         return ALC_FALSE;
1077     return ALC_TRUE;
1078 }
1079
1080 static void ALCpulsePlayback_stop(ALCpulsePlayback *self)
1081 {
1082     pa_operation *o;
1083     int res;
1084
1085     if(!self->stream)
1086         return;
1087
1088     self->killNow = AL_TRUE;
1089     althrd_join(self->thread, &res);
1090
1091     pa_threaded_mainloop_lock(self->loop);
1092
1093     o = pa_stream_cork(self->stream, 1, stream_success_callback, self->loop);
1094     wait_for_operation(o, self->loop);
1095
1096     pa_threaded_mainloop_unlock(self->loop);
1097 }
1098
1099
1100 static ALint64 ALCpulsePlayback_getLatency(ALCpulsePlayback *self)
1101 {
1102     pa_usec_t latency = 0;
1103     int neg, err;
1104
1105     if((err=pa_stream_get_latency(self->stream, &latency, &neg)) != 0)
1106     {
1107         /* FIXME: if err = -PA_ERR_NODATA, it means we were called too soon
1108          * after starting the stream and no timing info has been received from
1109          * the server yet. Should we wait, possibly stalling the app, or give a
1110          * dummy value? Either way, it shouldn't be 0. */
1111         if(err != -PA_ERR_NODATA)
1112             ERR("Failed to get stream latency: 0x%x\n", err);
1113         return 0;
1114     }
1115
1116     if(neg) latency = 0;
1117     return (ALint64)minu64(latency, U64(0x7fffffffffffffff)/1000) * 1000;
1118 }
1119
1120
1121 static void ALCpulsePlayback_lock(ALCpulsePlayback *self)
1122 {
1123     pa_threaded_mainloop_lock(self->loop);
1124 }
1125
1126 static void ALCpulsePlayback_unlock(ALCpulsePlayback *self)
1127 {
1128     pa_threaded_mainloop_unlock(self->loop);
1129 }
1130
1131
1132 typedef struct ALCpulseCapture {
1133     DERIVE_FROM_TYPE(ALCbackend);
1134
1135     al_string device_name;
1136
1137     const void *cap_store;
1138     size_t cap_len;
1139     size_t cap_remain;
1140
1141     ALCuint last_readable;
1142
1143     pa_buffer_attr attr;
1144     pa_sample_spec spec;
1145
1146     pa_threaded_mainloop *loop;
1147
1148     pa_stream *stream;
1149     pa_context *context;
1150 } ALCpulseCapture;
1151
1152 static void ALCpulseCapture_deviceCallback(pa_context *context, const pa_source_info *info, int eol, void *pdata);
1153 static void ALCpulseCapture_probeDevices(void);
1154
1155 static void ALCpulseCapture_contextStateCallback(pa_context *context, void *pdata);
1156 static void ALCpulseCapture_streamStateCallback(pa_stream *stream, void *pdata);
1157 static void ALCpulseCapture_sourceNameCallback(pa_context *context, const pa_source_info *info, int eol, void *pdata);
1158 static void ALCpulseCapture_streamMovedCallback(pa_stream *stream, void *pdata);
1159 static pa_stream *ALCpulseCapture_connectStream(const char *device_name,
1160                                                 pa_threaded_mainloop *loop, pa_context *context,
1161                                                 pa_stream_flags_t flags, pa_buffer_attr *attr,
1162                                                 pa_sample_spec *spec, pa_channel_map *chanmap);
1163
1164 static void ALCpulseCapture_Construct(ALCpulseCapture *self, ALCdevice *device);
1165 static void ALCpulseCapture_Destruct(ALCpulseCapture *self);
1166 static ALCenum ALCpulseCapture_open(ALCpulseCapture *self, const ALCchar *name);
1167 static void ALCpulseCapture_close(ALCpulseCapture *self);
1168 static DECLARE_FORWARD(ALCpulseCapture, ALCbackend, ALCboolean, reset)
1169 static ALCboolean ALCpulseCapture_start(ALCpulseCapture *self);
1170 static void ALCpulseCapture_stop(ALCpulseCapture *self);
1171 static ALCenum ALCpulseCapture_captureSamples(ALCpulseCapture *self, ALCvoid *buffer, ALCuint samples);
1172 static ALCuint ALCpulseCapture_availableSamples(ALCpulseCapture *self);
1173 static ALint64 ALCpulseCapture_getLatency(ALCpulseCapture *self);
1174 static void ALCpulseCapture_lock(ALCpulseCapture *self);
1175 static void ALCpulseCapture_unlock(ALCpulseCapture *self);
1176 DECLARE_DEFAULT_ALLOCATORS(ALCpulseCapture)
1177
1178 DEFINE_ALCBACKEND_VTABLE(ALCpulseCapture);
1179
1180
1181 static void ALCpulseCapture_Construct(ALCpulseCapture *self, ALCdevice *device)
1182 {
1183     ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
1184     SET_VTABLE2(ALCpulseCapture, ALCbackend, self);
1185
1186     AL_STRING_INIT(self->device_name);
1187 }
1188
1189 static void ALCpulseCapture_Destruct(ALCpulseCapture *self)
1190 {
1191     AL_STRING_DEINIT(self->device_name);
1192     ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
1193 }
1194
1195
1196 static void ALCpulseCapture_deviceCallback(pa_context *UNUSED(context), const pa_source_info *info, int eol, void *pdata)
1197 {
1198     pa_threaded_mainloop *loop = pdata;
1199     const DevMap *iter;
1200     DevMap entry;
1201
1202     if(eol)
1203     {
1204         pa_threaded_mainloop_signal(loop, 0);
1205         return;
1206     }
1207
1208 #define MATCH_INFO_NAME(iter) (al_string_cmp_cstr((iter)->device_name, info->name) == 0)
1209     VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_INFO_NAME);
1210 #undef MATCH_INFO_NAME
1211     if(iter != VECTOR_ITER_END(CaptureDevices))
1212         return;
1213
1214     TRACE("Got device \"%s\", \"%s\"\n", info->description, info->name);
1215
1216     AL_STRING_INIT(entry.name);
1217     AL_STRING_INIT(entry.device_name);
1218
1219     al_string_copy_cstr(&entry.name, info->description);
1220     al_string_copy_cstr(&entry.device_name, info->name);
1221
1222     VECTOR_PUSH_BACK(CaptureDevices, entry);
1223 }
1224
1225 static void ALCpulseCapture_probeDevices(void)
1226 {
1227     pa_threaded_mainloop *loop;
1228
1229     clear_devlist(&CaptureDevices);
1230
1231     if((loop=pa_threaded_mainloop_new()) &&
1232        pa_threaded_mainloop_start(loop) >= 0)
1233     {
1234         pa_context *context;
1235
1236         pa_threaded_mainloop_lock(loop);
1237         context = connect_context(loop, AL_FALSE);
1238         if(context)
1239         {
1240             pa_operation *o;
1241             pa_stream_flags_t flags;
1242             pa_sample_spec spec;
1243             pa_stream *stream;
1244
1245             flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
1246                     PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
1247
1248             spec.format = PA_SAMPLE_S16NE;
1249             spec.rate = 44100;
1250             spec.channels = 1;
1251
1252             stream = ALCpulseCapture_connectStream(NULL, loop, context, flags,
1253                                                    NULL, &spec, NULL);
1254             if(stream)
1255             {
1256                 o = pa_context_get_source_info_by_name(context, pa_stream_get_device_name(stream),
1257                                                        ALCpulseCapture_deviceCallback, loop);
1258                 wait_for_operation(o, loop);
1259
1260                 pa_stream_disconnect(stream);
1261                 pa_stream_unref(stream);
1262                 stream = NULL;
1263             }
1264
1265             o = pa_context_get_source_info_list(context, ALCpulseCapture_deviceCallback, loop);
1266             wait_for_operation(o, loop);
1267
1268             pa_context_disconnect(context);
1269             pa_context_unref(context);
1270         }
1271         pa_threaded_mainloop_unlock(loop);
1272         pa_threaded_mainloop_stop(loop);
1273     }
1274     if(loop)
1275         pa_threaded_mainloop_free(loop);
1276 }
1277
1278
1279 static void ALCpulseCapture_contextStateCallback(pa_context *context, void *pdata)
1280 {
1281     ALCpulseCapture *self = pdata;
1282     if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
1283     {
1284         ERR("Received context failure!\n");
1285         aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice);
1286     }
1287     pa_threaded_mainloop_signal(self->loop, 0);
1288 }
1289
1290 static void ALCpulseCapture_streamStateCallback(pa_stream *stream, void *pdata)
1291 {
1292     ALCpulseCapture *self = pdata;
1293     if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
1294     {
1295         ERR("Received stream failure!\n");
1296         aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice);
1297     }
1298     pa_threaded_mainloop_signal(self->loop, 0);
1299 }
1300
1301
1302 static void ALCpulseCapture_sourceNameCallback(pa_context *UNUSED(context), const pa_source_info *info, int eol, void *pdata)
1303 {
1304     ALCpulseCapture *self = pdata;
1305     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1306
1307     if(eol)
1308     {
1309         pa_threaded_mainloop_signal(self->loop, 0);
1310         return;
1311     }
1312
1313     al_string_copy_cstr(&device->DeviceName, info->description);
1314 }
1315
1316
1317 static void ALCpulseCapture_streamMovedCallback(pa_stream *stream, void *pdata)
1318 {
1319     ALCpulseCapture *self = pdata;
1320
1321     al_string_copy_cstr(&self->device_name, pa_stream_get_device_name(stream));
1322
1323     TRACE("Stream moved to %s\n", al_string_get_cstr(self->device_name));
1324 }
1325
1326
1327 static pa_stream *ALCpulseCapture_connectStream(const char *device_name,
1328     pa_threaded_mainloop *loop, pa_context *context,
1329     pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
1330     pa_channel_map *chanmap)
1331 {
1332     pa_stream_state_t state;
1333     pa_stream *stream;
1334
1335     stream = pa_stream_new_with_proplist(context, "Capture Stream", spec, chanmap, prop_filter);
1336     if(!stream)
1337     {
1338         ERR("pa_stream_new_with_proplist() failed: %s\n", pa_strerror(pa_context_errno(context)));
1339         return NULL;
1340     }
1341
1342     pa_stream_set_state_callback(stream, stream_state_callback, loop);
1343
1344     if(pa_stream_connect_record(stream, device_name, attr, flags) < 0)
1345     {
1346         ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
1347         pa_stream_unref(stream);
1348         return NULL;
1349     }
1350
1351     while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
1352     {
1353         if(!PA_STREAM_IS_GOOD(state))
1354         {
1355             ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
1356             pa_stream_unref(stream);
1357             return NULL;
1358         }
1359
1360         pa_threaded_mainloop_wait(loop);
1361     }
1362     pa_stream_set_state_callback(stream, NULL, NULL);
1363
1364     return stream;
1365 }
1366
1367
1368 static ALCenum ALCpulseCapture_open(ALCpulseCapture *self, const ALCchar *name)
1369 {
1370     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1371     const char *pulse_name = NULL;
1372     pa_stream_flags_t flags = 0;
1373     pa_channel_map chanmap;
1374     pa_operation *o;
1375     ALuint samples;
1376
1377     if(name)
1378     {
1379         const DevMap *iter;
1380
1381         if(VECTOR_SIZE(CaptureDevices) == 0)
1382             ALCpulseCapture_probeDevices();
1383
1384 #define MATCH_NAME(iter) (al_string_cmp_cstr((iter)->name, name) == 0)
1385         VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_NAME);
1386 #undef MATCH_NAME
1387         if(iter == VECTOR_ITER_END(CaptureDevices))
1388             return ALC_INVALID_VALUE;
1389         pulse_name = al_string_get_cstr(iter->device_name);
1390     }
1391
1392     if(!pulse_open(&self->loop, &self->context, ALCpulseCapture_contextStateCallback, self))
1393         return ALC_INVALID_VALUE;
1394
1395     pa_threaded_mainloop_lock(self->loop);
1396
1397     self->spec.rate = device->Frequency;
1398     self->spec.channels = ChannelsFromDevFmt(device->FmtChans);
1399
1400     switch(device->FmtType)
1401     {
1402         case DevFmtUByte:
1403             self->spec.format = PA_SAMPLE_U8;
1404             break;
1405         case DevFmtShort:
1406             self->spec.format = PA_SAMPLE_S16NE;
1407             break;
1408         case DevFmtInt:
1409             self->spec.format = PA_SAMPLE_S32NE;
1410             break;
1411         case DevFmtFloat:
1412             self->spec.format = PA_SAMPLE_FLOAT32NE;
1413             break;
1414         case DevFmtByte:
1415         case DevFmtUShort:
1416         case DevFmtUInt:
1417             ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));
1418             pa_threaded_mainloop_unlock(self->loop);
1419             goto fail;
1420     }
1421
1422     if(pa_sample_spec_valid(&self->spec) == 0)
1423     {
1424         ERR("Invalid sample format\n");
1425         pa_threaded_mainloop_unlock(self->loop);
1426         goto fail;
1427     }
1428
1429     if(!pa_channel_map_init_auto(&chanmap, self->spec.channels, PA_CHANNEL_MAP_WAVEEX))
1430     {
1431         ERR("Couldn't build map for channel count (%d)!\n", self->spec.channels);
1432         pa_threaded_mainloop_unlock(self->loop);
1433         goto fail;
1434     }
1435
1436     samples = device->UpdateSize * device->NumUpdates;
1437     samples = maxu(samples, 100 * device->Frequency / 1000);
1438
1439     self->attr.minreq = -1;
1440     self->attr.prebuf = -1;
1441     self->attr.maxlength = samples * pa_frame_size(&self->spec);
1442     self->attr.tlength = -1;
1443     self->attr.fragsize = minu(samples, 50*device->Frequency/1000) *
1444                           pa_frame_size(&self->spec);
1445
1446     flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
1447     if(!GetConfigValueBool("pulse", "allow-moves", 0))
1448         flags |= PA_STREAM_DONT_MOVE;
1449
1450     TRACE("Connecting to \"%s\"\n", pulse_name ? pulse_name : "(default)");
1451     self->stream = ALCpulseCapture_connectStream(pulse_name, self->loop, self->context,
1452                                                  flags, &self->attr, &self->spec,
1453                                                  &chanmap);
1454     if(!self->stream)
1455     {
1456         pa_threaded_mainloop_unlock(self->loop);
1457         goto fail;
1458     }
1459     pa_stream_set_moved_callback(self->stream, ALCpulseCapture_streamMovedCallback, self);
1460     pa_stream_set_state_callback(self->stream, ALCpulseCapture_streamStateCallback, self);
1461
1462     al_string_copy_cstr(&self->device_name, pa_stream_get_device_name(self->stream));
1463     o = pa_context_get_source_info_by_name(self->context,
1464                                            al_string_get_cstr(self->device_name),
1465                                            ALCpulseCapture_sourceNameCallback, self);
1466     wait_for_operation(o, self->loop);
1467
1468     pa_threaded_mainloop_unlock(self->loop);
1469     return ALC_NO_ERROR;
1470
1471 fail:
1472     pulse_close(self->loop, self->context, self->stream);
1473     self->loop = NULL;
1474     self->context = NULL;
1475     self->stream = NULL;
1476
1477     return ALC_INVALID_VALUE;
1478 }
1479
1480 static void ALCpulseCapture_close(ALCpulseCapture *self)
1481 {
1482     pulse_close(self->loop, self->context, self->stream);
1483     self->loop = NULL;
1484     self->context = NULL;
1485     self->stream = NULL;
1486
1487     al_string_clear(&self->device_name);
1488 }
1489
1490 static ALCboolean ALCpulseCapture_start(ALCpulseCapture *self)
1491 {
1492     pa_operation *o;
1493     o = pa_stream_cork(self->stream, 0, stream_success_callback, self->loop);
1494     wait_for_operation(o, self->loop);
1495
1496     return ALC_TRUE;
1497 }
1498
1499 static void ALCpulseCapture_stop(ALCpulseCapture *self)
1500 {
1501     pa_operation *o;
1502     o = pa_stream_cork(self->stream, 1, stream_success_callback, self->loop);
1503     wait_for_operation(o, self->loop);
1504 }
1505
1506 static ALCenum ALCpulseCapture_captureSamples(ALCpulseCapture *self, ALCvoid *buffer, ALCuint samples)
1507 {
1508     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1509     ALCuint todo = samples * pa_frame_size(&self->spec);
1510
1511     /* Capture is done in fragment-sized chunks, so we loop until we get all
1512      * that's available */
1513     self->last_readable -= todo;
1514     while(todo > 0)
1515     {
1516         size_t rem = todo;
1517
1518         if(self->cap_len == 0)
1519         {
1520             pa_stream_state_t state;
1521
1522             state = pa_stream_get_state(self->stream);
1523             if(!PA_STREAM_IS_GOOD(state))
1524             {
1525                 aluHandleDisconnect(device);
1526                 break;
1527             }
1528             if(pa_stream_peek(self->stream, &self->cap_store, &self->cap_len) < 0)
1529             {
1530                 ERR("pa_stream_peek() failed: %s\n",
1531                     pa_strerror(pa_context_errno(self->context)));
1532                 aluHandleDisconnect(device);
1533                 break;
1534             }
1535             self->cap_remain = self->cap_len;
1536         }
1537         if(rem > self->cap_remain)
1538             rem = self->cap_remain;
1539
1540         memcpy(buffer, self->cap_store, rem);
1541
1542         buffer = (ALbyte*)buffer + rem;
1543         todo -= rem;
1544
1545         self->cap_store = (ALbyte*)self->cap_store + rem;
1546         self->cap_remain -= rem;
1547         if(self->cap_remain == 0)
1548         {
1549             pa_stream_drop(self->stream);
1550             self->cap_len = 0;
1551         }
1552     }
1553     if(todo > 0)
1554         memset(buffer, ((device->FmtType==DevFmtUByte) ? 0x80 : 0), todo);
1555
1556     return ALC_NO_ERROR;
1557 }
1558
1559 static ALCuint ALCpulseCapture_availableSamples(ALCpulseCapture *self)
1560 {
1561     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1562     size_t readable = self->cap_remain;
1563
1564     if(device->Connected)
1565     {
1566         ssize_t got = pa_stream_readable_size(self->stream);
1567         if(got < 0)
1568         {
1569             ERR("pa_stream_readable_size() failed: %s\n", pa_strerror(got));
1570             aluHandleDisconnect(device);
1571         }
1572         else if((size_t)got > self->cap_len)
1573             readable += got - self->cap_len;
1574     }
1575
1576     if(self->last_readable < readable)
1577         self->last_readable = readable;
1578     return self->last_readable / pa_frame_size(&self->spec);
1579 }
1580
1581
1582 static ALint64 ALCpulseCapture_getLatency(ALCpulseCapture *self)
1583 {
1584     pa_usec_t latency = 0;
1585     int neg;
1586
1587     if(pa_stream_get_latency(self->stream, &latency, &neg) != 0)
1588     {
1589         ERR("Failed to get stream latency!\n");
1590         return 0;
1591     }
1592
1593     if(neg) latency = 0;
1594     return (ALint64)minu64(latency, U64(0x7fffffffffffffff)/1000) * 1000;
1595 }
1596
1597
1598 static void ALCpulseCapture_lock(ALCpulseCapture *self)
1599 {
1600     pa_threaded_mainloop_lock(self->loop);
1601 }
1602
1603 static void ALCpulseCapture_unlock(ALCpulseCapture *self)
1604 {
1605     pa_threaded_mainloop_unlock(self->loop);
1606 }
1607
1608
1609 static inline void AppendAllDevicesList2(const DevMap *entry)
1610 { AppendAllDevicesList(al_string_get_cstr(entry->name)); }
1611 static inline void AppendCaptureDeviceList2(const DevMap *entry)
1612 { AppendCaptureDeviceList(al_string_get_cstr(entry->name)); }
1613
1614 typedef struct ALCpulseBackendFactory {
1615     DERIVE_FROM_TYPE(ALCbackendFactory);
1616 } ALCpulseBackendFactory;
1617 #define ALCPULSEBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCpulseBackendFactory, ALCbackendFactory) } }
1618
1619 static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory *self);
1620 static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory *self);
1621 static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory *self, ALCbackend_Type type);
1622 static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory *self, enum DevProbe type);
1623 static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory *self, ALCdevice *device, ALCbackend_Type type);
1624
1625 DEFINE_ALCBACKENDFACTORY_VTABLE(ALCpulseBackendFactory);
1626
1627
1628 static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory* UNUSED(self))
1629 {
1630     ALCboolean ret = ALC_FALSE;
1631
1632     VECTOR_INIT(PlaybackDevices);
1633     VECTOR_INIT(CaptureDevices);
1634
1635     if(pulse_load())
1636     {
1637         pa_threaded_mainloop *loop;
1638
1639         pulse_ctx_flags = 0;
1640         if(!GetConfigValueBool("pulse", "spawn-server", 1))
1641             pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
1642
1643         if((loop=pa_threaded_mainloop_new()) &&
1644            pa_threaded_mainloop_start(loop) >= 0)
1645         {
1646             pa_context *context;
1647
1648             pa_threaded_mainloop_lock(loop);
1649             context = connect_context(loop, AL_TRUE);
1650             if(context)
1651             {
1652                 ret = ALC_TRUE;
1653
1654                 /* Some libraries (Phonon, Qt) set some pulseaudio properties
1655                  * through environment variables, which causes all streams in
1656                  * the process to inherit them. This attempts to filter those
1657                  * properties out by setting them to 0-length data. */
1658                 prop_filter = pa_proplist_new();
1659                 pa_proplist_set(prop_filter, PA_PROP_MEDIA_ROLE, NULL, 0);
1660                 pa_proplist_set(prop_filter, "phonon.streamid", NULL, 0);
1661
1662                 pa_context_disconnect(context);
1663                 pa_context_unref(context);
1664             }
1665             pa_threaded_mainloop_unlock(loop);
1666             pa_threaded_mainloop_stop(loop);
1667         }
1668         if(loop)
1669             pa_threaded_mainloop_free(loop);
1670     }
1671
1672     return ret;
1673 }
1674
1675 static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory* UNUSED(self))
1676 {
1677     clear_devlist(&PlaybackDevices);
1678     VECTOR_DEINIT(PlaybackDevices);
1679
1680     clear_devlist(&CaptureDevices);
1681     VECTOR_DEINIT(CaptureDevices);
1682
1683     if(prop_filter)
1684         pa_proplist_free(prop_filter);
1685     prop_filter = NULL;
1686
1687     /* PulseAudio doesn't like being CloseLib'd sometimes */
1688 }
1689
1690 static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory* UNUSED(self), ALCbackend_Type type)
1691 {
1692     if(type == ALCbackend_Playback || type == ALCbackend_Capture)
1693         return ALC_TRUE;
1694     return ALC_FALSE;
1695 }
1696
1697 static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory* UNUSED(self), enum DevProbe type)
1698 {
1699     switch(type)
1700     {
1701         case ALL_DEVICE_PROBE:
1702             ALCpulsePlayback_probeDevices();
1703             VECTOR_FOR_EACH(const DevMap, PlaybackDevices, AppendAllDevicesList2);
1704             break;
1705
1706         case CAPTURE_DEVICE_PROBE:
1707             ALCpulseCapture_probeDevices();
1708             VECTOR_FOR_EACH(const DevMap, CaptureDevices, AppendCaptureDeviceList2);
1709             break;
1710     }
1711 }
1712
1713 static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type)
1714 {
1715     if(type == ALCbackend_Playback)
1716     {
1717         ALCpulsePlayback *backend;
1718
1719         backend = ALCpulsePlayback_New(sizeof(*backend));
1720         if(!backend) return NULL;
1721         memset(backend, 0, sizeof(*backend));
1722
1723         ALCpulsePlayback_Construct(backend, device);
1724
1725         return STATIC_CAST(ALCbackend, backend);
1726     }
1727     if(type == ALCbackend_Capture)
1728     {
1729         ALCpulseCapture *backend;
1730
1731         backend = ALCpulseCapture_New(sizeof(*backend));
1732         if(!backend) return NULL;
1733         memset(backend, 0, sizeof(*backend));
1734
1735         ALCpulseCapture_Construct(backend, device);
1736
1737         return STATIC_CAST(ALCbackend, backend);
1738     }
1739
1740     return NULL;
1741 }
1742
1743
1744 #else /* PA_API_VERSION == 12 */
1745
1746 #warning "Unsupported API version, backend will be unavailable!"
1747
1748 typedef struct ALCpulseBackendFactory {
1749     DERIVE_FROM_TYPE(ALCbackendFactory);
1750 } ALCpulseBackendFactory;
1751 #define ALCPULSEBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCpulseBackendFactory, ALCbackendFactory) } }
1752
1753 static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory* UNUSED(self))
1754 {
1755     return ALC_FALSE;
1756 }
1757
1758 static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory* UNUSED(self))
1759 {
1760 }
1761
1762 static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory* UNUSED(self), ALCbackend_Type UNUSED(type))
1763 {
1764     return ALC_FALSE;
1765 }
1766
1767 static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory* UNUSED(self), enum DevProbe UNUSED(type))
1768 {
1769 }
1770
1771 static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory* UNUSED(self), ALCdevice* UNUSED(device), ALCbackend_Type UNUSED(type))
1772 {
1773     return NULL;
1774 }
1775
1776 DEFINE_ALCBACKENDFACTORY_VTABLE(ALCpulseBackendFactory);
1777
1778 #endif /* PA_API_VERSION == 12 */
1779
1780 ALCbackendFactory *ALCpulseBackendFactory_getFactory(void)
1781 {
1782     static ALCpulseBackendFactory factory = ALCPULSEBACKENDFACTORY_INITIALIZER;
1783     return STATIC_CAST(ALCbackendFactory, &factory);
1784 }