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 #ifdef HAVE_DYNLOAD
  38 static void *pa_handle;
  39 #define MAKE_FUNC(x) static __typeof(x) * p##x
  40 MAKE_FUNC(pa_context_unref);
  41 MAKE_FUNC(pa_sample_spec_valid);
  42 MAKE_FUNC(pa_frame_size);
  43 MAKE_FUNC(pa_stream_drop);
  44 MAKE_FUNC(pa_strerror);
  45 MAKE_FUNC(pa_context_get_state);
  46 MAKE_FUNC(pa_stream_get_state);
  47 MAKE_FUNC(pa_threaded_mainloop_signal);
  48 MAKE_FUNC(pa_stream_peek);
  49 MAKE_FUNC(pa_threaded_mainloop_wait);
  50 MAKE_FUNC(pa_threaded_mainloop_unlock);
  51 MAKE_FUNC(pa_threaded_mainloop_in_thread);
  52 MAKE_FUNC(pa_context_new);
  53 MAKE_FUNC(pa_threaded_mainloop_stop);
  54 MAKE_FUNC(pa_context_disconnect);
  55 MAKE_FUNC(pa_threaded_mainloop_start);
  56 MAKE_FUNC(pa_threaded_mainloop_get_api);
  57 MAKE_FUNC(pa_context_set_state_callback);
  58 MAKE_FUNC(pa_stream_write);
  59 MAKE_FUNC(pa_xfree);
  60 MAKE_FUNC(pa_stream_connect_record);
  61 MAKE_FUNC(pa_stream_connect_playback);
  62 MAKE_FUNC(pa_stream_readable_size);
  63 MAKE_FUNC(pa_stream_writable_size);
  64 MAKE_FUNC(pa_stream_is_corked);
  65 MAKE_FUNC(pa_stream_cork);
  66 MAKE_FUNC(pa_stream_is_suspended);
  67 MAKE_FUNC(pa_stream_get_device_name);
  68 MAKE_FUNC(pa_stream_get_latency);
  69 MAKE_FUNC(pa_path_get_filename);
  70 MAKE_FUNC(pa_get_binary_name);
  71 MAKE_FUNC(pa_threaded_mainloop_free);
  72 MAKE_FUNC(pa_context_errno);
  73 MAKE_FUNC(pa_xmalloc);
  74 MAKE_FUNC(pa_stream_unref);
  75 MAKE_FUNC(pa_threaded_mainloop_accept);
  76 MAKE_FUNC(pa_stream_set_write_callback);
  77 MAKE_FUNC(pa_threaded_mainloop_new);
  78 MAKE_FUNC(pa_context_connect);
  79 MAKE_FUNC(pa_stream_set_buffer_attr);
  80 MAKE_FUNC(pa_stream_get_buffer_attr);
  81 MAKE_FUNC(pa_stream_get_sample_spec);
  82 MAKE_FUNC(pa_stream_get_time);
  83 MAKE_FUNC(pa_stream_set_read_callback);
  84 MAKE_FUNC(pa_stream_set_state_callback);
  85 MAKE_FUNC(pa_stream_set_moved_callback);
  86 MAKE_FUNC(pa_stream_set_underflow_callback);
  87 MAKE_FUNC(pa_stream_new_with_proplist);
  88 MAKE_FUNC(pa_stream_disconnect);
  89 MAKE_FUNC(pa_threaded_mainloop_lock);
  90 MAKE_FUNC(pa_channel_map_init_auto);
  91 MAKE_FUNC(pa_channel_map_parse);
  92 MAKE_FUNC(pa_channel_map_snprint);
  93 MAKE_FUNC(pa_channel_map_equal);
  94 MAKE_FUNC(pa_context_get_server_info);
  95 MAKE_FUNC(pa_context_get_sink_info_by_name);
  96 MAKE_FUNC(pa_context_get_sink_info_list);
  97 MAKE_FUNC(pa_context_get_source_info_by_name);
  98 MAKE_FUNC(pa_context_get_source_info_list);
  99 MAKE_FUNC(pa_operation_get_state);
 100 MAKE_FUNC(pa_operation_unref);
 101 MAKE_FUNC(pa_proplist_new);
 102 MAKE_FUNC(pa_proplist_free);
 103 MAKE_FUNC(pa_proplist_set);
 104 MAKE_FUNC(pa_channel_map_superset);
 105 MAKE_FUNC(pa_stream_set_buffer_attr_callback);
 106 MAKE_FUNC(pa_stream_begin_write);
 107 #undef MAKE_FUNC
 108
 109 #define pa_context_unref ppa_context_unref
 110 #define pa_sample_spec_valid ppa_sample_spec_valid
 111 #define pa_frame_size ppa_frame_size
 112 #define pa_stream_drop ppa_stream_drop
 113 #define pa_strerror ppa_strerror
 114 #define pa_context_get_state ppa_context_get_state
 115 #define pa_stream_get_state ppa_stream_get_state
 116 #define pa_threaded_mainloop_signal ppa_threaded_mainloop_signal
 117 #define pa_stream_peek ppa_stream_peek
 118 #define pa_threaded_mainloop_wait ppa_threaded_mainloop_wait
 119 #define pa_threaded_mainloop_unlock ppa_threaded_mainloop_unlock
 120 #define pa_threaded_mainloop_in_thread ppa_threaded_mainloop_in_thread
 121 #define pa_context_new ppa_context_new
 122 #define pa_threaded_mainloop_stop ppa_threaded_mainloop_stop
 123 #define pa_context_disconnect ppa_context_disconnect
 124 #define pa_threaded_mainloop_start ppa_threaded_mainloop_start
 125 #define pa_threaded_mainloop_get_api ppa_threaded_mainloop_get_api
 126 #define pa_context_set_state_callback ppa_context_set_state_callback
 127 #define pa_stream_write ppa_stream_write
 128 #define pa_xfree ppa_xfree
 129 #define pa_stream_connect_record ppa_stream_connect_record
 130 #define pa_stream_connect_playback ppa_stream_connect_playback
 131 #define pa_stream_readable_size ppa_stream_readable_size
 132 #define pa_stream_writable_size ppa_stream_writable_size
 133 #define pa_stream_is_corked ppa_stream_is_corked
 134 #define pa_stream_cork ppa_stream_cork
 135 #define pa_stream_is_suspended ppa_stream_is_suspended
 136 #define pa_stream_get_device_name ppa_stream_get_device_name
 137 #define pa_stream_get_latency ppa_stream_get_latency
 138 #define pa_path_get_filename ppa_path_get_filename
 139 #define pa_get_binary_name ppa_get_binary_name
 140 #define pa_threaded_mainloop_free ppa_threaded_mainloop_free
 141 #define pa_context_errno ppa_context_errno
 142 #define pa_xmalloc ppa_xmalloc
 143 #define pa_stream_unref ppa_stream_unref
 144 #define pa_threaded_mainloop_accept ppa_threaded_mainloop_accept
 145 #define pa_stream_set_write_callback ppa_stream_set_write_callback
 146 #define pa_threaded_mainloop_new ppa_threaded_mainloop_new
 147 #define pa_context_connect ppa_context_connect
 148 #define pa_stream_set_buffer_attr ppa_stream_set_buffer_attr
 149 #define pa_stream_get_buffer_attr ppa_stream_get_buffer_attr
 150 #define pa_stream_get_sample_spec ppa_stream_get_sample_spec
 151 #define pa_stream_get_time ppa_stream_get_time
 152 #define pa_stream_set_read_callback ppa_stream_set_read_callback
 153 #define pa_stream_set_state_callback ppa_stream_set_state_callback
 154 #define pa_stream_set_moved_callback ppa_stream_set_moved_callback
 155 #define pa_stream_set_underflow_callback ppa_stream_set_underflow_callback
 156 #define pa_stream_new_with_proplist ppa_stream_new_with_proplist
 157 #define pa_stream_disconnect ppa_stream_disconnect
 158 #define pa_threaded_mainloop_lock ppa_threaded_mainloop_lock
 159 #define pa_channel_map_init_auto ppa_channel_map_init_auto
 160 #define pa_channel_map_parse ppa_channel_map_parse
 161 #define pa_channel_map_snprint ppa_channel_map_snprint
 162 #define pa_channel_map_equal ppa_channel_map_equal
 163 #define pa_context_get_server_info ppa_context_get_server_info
 164 #define pa_context_get_sink_info_by_name ppa_context_get_sink_info_by_name
 165 #define pa_context_get_sink_info_list ppa_context_get_sink_info_list
 166 #define pa_context_get_source_info_by_name ppa_context_get_source_info_by_name
 167 #define pa_context_get_source_info_list ppa_context_get_source_info_list
 168 #define pa_operation_get_state ppa_operation_get_state
 169 #define pa_operation_unref ppa_operation_unref
 170 #define pa_proplist_new ppa_proplist_new
 171 #define pa_proplist_free ppa_proplist_free
 172 #define pa_proplist_set ppa_proplist_set
 173 #define pa_channel_map_superset ppa_channel_map_superset
 174 #define pa_stream_set_buffer_attr_callback ppa_stream_set_buffer_attr_callback
 175 #define pa_stream_begin_write ppa_stream_begin_write
 176
 177 #endif
 178
 179 static ALCboolean pulse_load(void)
 180 {
 181     ALCboolean ret = ALC_TRUE;
 182 #ifdef HAVE_DYNLOAD
 183     if(!pa_handle)
 184     {
 185 #ifdef _WIN32
 186 #define PALIB "libpulse-0.dll"
 187 #elif defined(__APPLE__) && defined(__MACH__)
 188 #define PALIB "libpulse.0.dylib"
 189 #else
 190 #define PALIB "libpulse.so.0"
 191 #endif
 192         pa_handle = LoadLib(PALIB);
 193         if(!pa_handle)
 194             return ALC_FALSE;
 195
 196 #define LOAD_FUNC(x) do {                                                     \
 197     p##x = GetSymbol(pa_handle, #x);                                          \
 198     if(!(p##x)) {                                                             \
 199         ret = ALC_FALSE;                                                      \
 200     }                                                                         \
 201 } while(0)
 202         LOAD_FUNC(pa_context_unref);
 203         LOAD_FUNC(pa_sample_spec_valid);
 204         LOAD_FUNC(pa_stream_drop);
 205         LOAD_FUNC(pa_frame_size);
 206         LOAD_FUNC(pa_strerror);
 207         LOAD_FUNC(pa_context_get_state);
 208         LOAD_FUNC(pa_stream_get_state);
 209         LOAD_FUNC(pa_threaded_mainloop_signal);
 210         LOAD_FUNC(pa_stream_peek);
 211         LOAD_FUNC(pa_threaded_mainloop_wait);
 212         LOAD_FUNC(pa_threaded_mainloop_unlock);
 213         LOAD_FUNC(pa_threaded_mainloop_in_thread);
 214         LOAD_FUNC(pa_context_new);
 215         LOAD_FUNC(pa_threaded_mainloop_stop);
 216         LOAD_FUNC(pa_context_disconnect);
 217         LOAD_FUNC(pa_threaded_mainloop_start);
 218         LOAD_FUNC(pa_threaded_mainloop_get_api);
 219         LOAD_FUNC(pa_context_set_state_callback);
 220         LOAD_FUNC(pa_stream_write);
 221         LOAD_FUNC(pa_xfree);
 222         LOAD_FUNC(pa_stream_connect_record);
 223         LOAD_FUNC(pa_stream_connect_playback);
 224         LOAD_FUNC(pa_stream_readable_size);
 225         LOAD_FUNC(pa_stream_writable_size);
 226         LOAD_FUNC(pa_stream_is_corked);
 227         LOAD_FUNC(pa_stream_cork);
 228         LOAD_FUNC(pa_stream_is_suspended);
 229         LOAD_FUNC(pa_stream_get_device_name);
 230         LOAD_FUNC(pa_stream_get_latency);
 231         LOAD_FUNC(pa_path_get_filename);
 232         LOAD_FUNC(pa_get_binary_name);
 233         LOAD_FUNC(pa_threaded_mainloop_free);
 234         LOAD_FUNC(pa_context_errno);
 235         LOAD_FUNC(pa_xmalloc);
 236         LOAD_FUNC(pa_stream_unref);
 237         LOAD_FUNC(pa_threaded_mainloop_accept);
 238         LOAD_FUNC(pa_stream_set_write_callback);
 239         LOAD_FUNC(pa_threaded_mainloop_new);
 240         LOAD_FUNC(pa_context_connect);
 241         LOAD_FUNC(pa_stream_set_buffer_attr);
 242         LOAD_FUNC(pa_stream_get_buffer_attr);
 243         LOAD_FUNC(pa_stream_get_sample_spec);
 244         LOAD_FUNC(pa_stream_get_time);
 245         LOAD_FUNC(pa_stream_set_read_callback);
 246         LOAD_FUNC(pa_stream_set_state_callback);
 247         LOAD_FUNC(pa_stream_set_moved_callback);
 248         LOAD_FUNC(pa_stream_set_underflow_callback);
 249         LOAD_FUNC(pa_stream_new_with_proplist);
 250         LOAD_FUNC(pa_stream_disconnect);
 251         LOAD_FUNC(pa_threaded_mainloop_lock);
 252         LOAD_FUNC(pa_channel_map_init_auto);
 253         LOAD_FUNC(pa_channel_map_parse);
 254         LOAD_FUNC(pa_channel_map_snprint);
 255         LOAD_FUNC(pa_channel_map_equal);
 256         LOAD_FUNC(pa_context_get_server_info);
 257         LOAD_FUNC(pa_context_get_sink_info_by_name);
 258         LOAD_FUNC(pa_context_get_sink_info_list);
 259         LOAD_FUNC(pa_context_get_source_info_by_name);
 260         LOAD_FUNC(pa_context_get_source_info_list);
 261         LOAD_FUNC(pa_operation_get_state);
 262         LOAD_FUNC(pa_operation_unref);
 263         LOAD_FUNC(pa_proplist_new);
 264         LOAD_FUNC(pa_proplist_free);
 265         LOAD_FUNC(pa_proplist_set);
 266         LOAD_FUNC(pa_channel_map_superset);
 267         LOAD_FUNC(pa_stream_set_buffer_attr_callback);
 268         LOAD_FUNC(pa_stream_begin_write);
 269 #undef LOAD_FUNC
 270
 271         if(ret == ALC_FALSE)
 272         {
 273             CloseLib(pa_handle);
 274             pa_handle = NULL;
 275         }
 276     }
 277 #endif /* HAVE_DYNLOAD */
 278     return ret;
 279 }
 280
 281
 282 /* Global flags and properties */
 283 static pa_context_flags_t pulse_ctx_flags;
 284 static pa_proplist *prop_filter;
 285
 286
 287 /* PulseAudio Event Callbacks */
 288 static void context_state_callback(pa_context *context, void *pdata)
 289 {
 290     pa_threaded_mainloop *loop = pdata;
 291     pa_context_state_t state;
 292
 293     state = pa_context_get_state(context);
 294     if(state == PA_CONTEXT_READY || !PA_CONTEXT_IS_GOOD(state))
 295         pa_threaded_mainloop_signal(loop, 0);
 296 }
 297
 298 static void stream_state_callback(pa_stream *stream, void *pdata)
 299 {
 300     pa_threaded_mainloop *loop = pdata;
 301     pa_stream_state_t state;
 302
 303     state = pa_stream_get_state(stream);
 304     if(state == PA_STREAM_READY || !PA_STREAM_IS_GOOD(state))
 305         pa_threaded_mainloop_signal(loop, 0);
 306 }
 307
 308 static void stream_success_callback(pa_stream *UNUSED(stream), int UNUSED(success), void *pdata)
 309 {
 310     pa_threaded_mainloop *loop = pdata;
 311     pa_threaded_mainloop_signal(loop, 0);
 312 }
 313
 314 static void wait_for_operation(pa_operation *op, pa_threaded_mainloop *loop)
 315 {
 316     if(op)
 317     {
 318         while(pa_operation_get_state(op) == PA_OPERATION_RUNNING)
 319             pa_threaded_mainloop_wait(loop);
 320         pa_operation_unref(op);
 321     }
 322 }
 323
 324
 325 static pa_context *connect_context(pa_threaded_mainloop *loop, ALboolean silent)
 326 {
 327     const char *name = "OpenAL Soft";
 328     char path_name[PATH_MAX];
 329     pa_context_state_t state;
 330     pa_context *context;
 331     int err;
 332
 333     if(pa_get_binary_name(path_name, sizeof(path_name)))
 334         name = pa_path_get_filename(path_name);
 335
 336     context = pa_context_new(pa_threaded_mainloop_get_api(loop), name);
 337     if(!context)
 338     {
 339         ERR("pa_context_new() failed\n");
 340         return NULL;
 341     }
 342
 343     pa_context_set_state_callback(context, context_state_callback, loop);
 344
 345     if((err=pa_context_connect(context, NULL, pulse_ctx_flags, NULL)) >= 0)
 346     {
 347         while((state=pa_context_get_state(context)) != PA_CONTEXT_READY)
 348         {
 349             if(!PA_CONTEXT_IS_GOOD(state))
 350             {
 351                 err = pa_context_errno(context);
 352                 if(err > 0)  err = -err;
 353                 break;
 354             }
 355
 356             pa_threaded_mainloop_wait(loop);
 357         }
 358     }
 359     pa_context_set_state_callback(context, NULL, NULL);
 360
 361     if(err < 0)
 362     {
 363         if(!silent)
 364             ERR("Context did not connect: %s\n", pa_strerror(err));
 365         pa_context_unref(context);
 366         return NULL;
 367     }
 368
 369     return context;
 370 }
 371
 372
 373 static ALCboolean pulse_open(pa_threaded_mainloop **loop, pa_context **context,
 374                              void(*state_cb)(pa_context*,void*), void *ptr)
 375 {
 376     if(!(*loop = pa_threaded_mainloop_new()))
 377     {
 378         ERR("pa_threaded_mainloop_new() failed!\n");
 379         return ALC_FALSE;
 380     }
 381     if(pa_threaded_mainloop_start(*loop) < 0)
 382     {
 383         ERR("pa_threaded_mainloop_start() failed\n");
 384         goto error;
 385     }
 386
 387     pa_threaded_mainloop_lock(*loop);
 388
 389     *context = connect_context(*loop, AL_FALSE);
 390     if(!*context)
 391     {
 392         pa_threaded_mainloop_unlock(*loop);
 393         pa_threaded_mainloop_stop(*loop);
 394         goto error;
 395     }
 396     pa_context_set_state_callback(*context, state_cb, ptr);
 397
 398     pa_threaded_mainloop_unlock(*loop);
 399     return ALC_TRUE;
 400
 401 error:
 402     pa_threaded_mainloop_free(*loop);
 403     *loop = NULL;
 404
 405     return ALC_FALSE;
 406 }
 407
 408 static void pulse_close(pa_threaded_mainloop *loop, pa_context *context, pa_stream *stream)
 409 {
 410     pa_threaded_mainloop_lock(loop);
 411
 412     if(stream)
 413     {
 414         pa_stream_set_state_callback(stream, NULL, NULL);
 415         pa_stream_set_moved_callback(stream, NULL, NULL);
 416         pa_stream_set_write_callback(stream, NULL, NULL);
 417         pa_stream_set_buffer_attr_callback(stream, NULL, NULL);
 418         pa_stream_disconnect(stream);
 419         pa_stream_unref(stream);
 420     }
 421
 422     pa_context_disconnect(context);
 423     pa_context_unref(context);
 424
 425     pa_threaded_mainloop_unlock(loop);
 426
 427     pa_threaded_mainloop_stop(loop);
 428     pa_threaded_mainloop_free(loop);
 429 }
 430
 431
 432 typedef struct {
 433     al_string name;
 434     al_string device_name;
 435 } DevMap;
 436 TYPEDEF_VECTOR(DevMap, vector_DevMap)
 437
 438 static vector_DevMap PlaybackDevices;
 439 static vector_DevMap CaptureDevices;
 440
 441 static void clear_devlist(vector_DevMap *list)
 442 {
 443 #define DEINIT_STRS(i)  (AL_STRING_DEINIT((i)->name),AL_STRING_DEINIT((i)->device_name))
 444     VECTOR_FOR_EACH(DevMap, *list, DEINIT_STRS);
 445 #undef DEINIT_STRS
 446     VECTOR_RESIZE(*list, 0);
 447 }
 448
 449
 450 typedef struct ALCpulsePlayback {
 451     DERIVE_FROM_TYPE(ALCbackend);
 452
 453     al_string device_name;
 454
 455     pa_buffer_attr attr;
 456     pa_sample_spec spec;
 457
 458     pa_threaded_mainloop *loop;
 459
 460     pa_stream *stream;
 461     pa_context *context;
 462
 463     volatile ALboolean killNow;
 464     althrd_t thread;
 465 } ALCpulsePlayback;
 466
 467 static void ALCpulsePlayback_deviceCallback(pa_context *context, const pa_sink_info *info, int eol, void *pdata);
 468 static void ALCpulsePlayback_probeDevices(void);
 469
 470 static void ALCpulsePlayback_bufferAttrCallback(pa_stream *stream, void *pdata);
 471 static void ALCpulsePlayback_contextStateCallback(pa_context *context, void *pdata);
 472 static void ALCpulsePlayback_streamStateCallback(pa_stream *stream, void *pdata);
 473 static void ALCpulsePlayback_streamWriteCallback(pa_stream *p, size_t nbytes, void *userdata);
 474 static void ALCpulsePlayback_sinkInfoCallback(pa_context *context, const pa_sink_info *info, int eol, void *pdata);
 475 static void ALCpulsePlayback_sinkNameCallback(pa_context *context, const pa_sink_info *info, int eol, void *pdata);
 476 static void ALCpulsePlayback_streamMovedCallback(pa_stream *stream, void *pdata);
 477 static pa_stream *ALCpulsePlayback_connectStream(const char *device_name, pa_threaded_mainloop *loop,
 478                                                  pa_context *context, pa_stream_flags_t flags,
 479                                                  pa_buffer_attr *attr, pa_sample_spec *spec,
 480                                                  pa_channel_map *chanmap);
 481 static int ALCpulsePlayback_mixerProc(void *ptr);
 482
 483 static void ALCpulsePlayback_Construct(ALCpulsePlayback *self, ALCdevice *device);
 484 static void ALCpulsePlayback_Destruct(ALCpulsePlayback *self);
 485 static ALCenum ALCpulsePlayback_open(ALCpulsePlayback *self, const ALCchar *name);
 486 static void ALCpulsePlayback_close(ALCpulsePlayback *self);
 487 static ALCboolean ALCpulsePlayback_reset(ALCpulsePlayback *self);
 488 static ALCboolean ALCpulsePlayback_start(ALCpulsePlayback *self);
 489 static void ALCpulsePlayback_stop(ALCpulsePlayback *self);
 490 static DECLARE_FORWARD2(ALCpulsePlayback, ALCbackend, ALCenum, captureSamples, ALCvoid*, ALCuint)
 491 static DECLARE_FORWARD(ALCpulsePlayback, ALCbackend, ALCuint, availableSamples)
 492 static ALint64 ALCpulsePlayback_getLatency(ALCpulsePlayback *self);
 493 static void ALCpulsePlayback_lock(ALCpulsePlayback *self);
 494 static void ALCpulsePlayback_unlock(ALCpulsePlayback *self);
 495 DECLARE_DEFAULT_ALLOCATORS(ALCpulsePlayback)
 496
 497 DEFINE_ALCBACKEND_VTABLE(ALCpulsePlayback);
 498
 499
 500 static void ALCpulsePlayback_Construct(ALCpulsePlayback *self, ALCdevice *device)
 501 {
 502     ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
 503     SET_VTABLE2(ALCpulsePlayback, ALCbackend, self);
 504
 505     AL_STRING_INIT(self->device_name);
 506 }
 507
 508 static void ALCpulsePlayback_Destruct(ALCpulsePlayback *self)
 509 {
 510     AL_STRING_DEINIT(self->device_name);
 511     ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
 512 }
 513
 514
 515 static void ALCpulsePlayback_deviceCallback(pa_context *UNUSED(context), const pa_sink_info *info, int eol, void *pdata)
 516 {
 517     pa_threaded_mainloop *loop = pdata;
 518     const DevMap *iter;
 519     DevMap entry;
 520     int count;
 521
 522     if(eol)
 523     {
 524         pa_threaded_mainloop_signal(loop, 0);
 525         return;
 526     }
 527
 528 #define MATCH_INFO_NAME(iter) (al_string_cmp_cstr((iter)->device_name, info->name) == 0)
 529     VECTOR_FIND_IF(iter, const DevMap, PlaybackDevices, MATCH_INFO_NAME);
 530     if(iter != VECTOR_ITER_END(PlaybackDevices)) return;
 531 #undef MATCH_INFO_NAME
 532
 533     AL_STRING_INIT(entry.name);
 534     AL_STRING_INIT(entry.device_name);
 535
 536     al_string_copy_cstr(&entry.device_name, info->name);
 537
 538     count = 0;
 539     while(1)
 540     {
 541         al_string_copy_cstr(&entry.name, info->description);
 542         if(count != 0)
 543         {
 544             char str[64];
 545             snprintf(str, sizeof(str), " #%d", count+1);
 546             al_string_append_cstr(&entry.name, str);
 547         }
 548
 549 #define MATCH_ENTRY(i) (al_string_cmp(entry.name, (i)->name) == 0)
 550         VECTOR_FIND_IF(iter, const DevMap, PlaybackDevices, MATCH_ENTRY);
 551         if(iter == VECTOR_ITER_END(PlaybackDevices)) break;
 552 #undef MATCH_ENTRY
 553         count++;
 554     }
 555
 556     TRACE("Got device \"%s\", \"%s\"\n", al_string_get_cstr(entry.name), al_string_get_cstr(entry.device_name));
 557
 558     VECTOR_PUSH_BACK(PlaybackDevices, entry);
 559 }
 560
 561 static void ALCpulsePlayback_probeDevices(void)
 562 {
 563     pa_threaded_mainloop *loop;
 564
 565     clear_devlist(&PlaybackDevices);
 566
 567     if((loop=pa_threaded_mainloop_new()) &&
 568        pa_threaded_mainloop_start(loop) >= 0)
 569     {
 570         pa_context *context;
 571
 572         pa_threaded_mainloop_lock(loop);
 573         context = connect_context(loop, AL_FALSE);
 574         if(context)
 575         {
 576             pa_operation *o;
 577             pa_stream_flags_t flags;
 578             pa_sample_spec spec;
 579             pa_stream *stream;
 580
 581             flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
 582                     PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
 583
 584             spec.format = PA_SAMPLE_S16NE;
 585             spec.rate = 44100;
 586             spec.channels = 2;
 587
 588             stream = ALCpulsePlayback_connectStream(NULL, loop, context, flags,
 589                                                     NULL, &spec, NULL);
 590             if(stream)
 591             {
 592                 o = pa_context_get_sink_info_by_name(context, pa_stream_get_device_name(stream),
 593                                                      ALCpulsePlayback_deviceCallback, loop);
 594                 wait_for_operation(o, loop);
 595
 596                 pa_stream_disconnect(stream);
 597                 pa_stream_unref(stream);
 598                 stream = NULL;
 599             }
 600
 601             o = pa_context_get_sink_info_list(context, ALCpulsePlayback_deviceCallback, loop);
 602             wait_for_operation(o, loop);
 603
 604             pa_context_disconnect(context);
 605             pa_context_unref(context);
 606         }
 607         pa_threaded_mainloop_unlock(loop);
 608         pa_threaded_mainloop_stop(loop);
 609     }
 610     if(loop)
 611         pa_threaded_mainloop_free(loop);
 612 }
 613
 614
 615 static void ALCpulsePlayback_bufferAttrCallback(pa_stream *stream, void *pdata)
 616 {
 617     ALCpulsePlayback *self = pdata;
 618
 619     self->attr = *pa_stream_get_buffer_attr(stream);
 620     TRACE("minreq=%d, tlength=%d, prebuf=%d\n", self->attr.minreq, self->attr.tlength, self->attr.prebuf);
 621 }
 622
 623 static void ALCpulsePlayback_contextStateCallback(pa_context *context, void *pdata)
 624 {
 625     ALCpulsePlayback *self = pdata;
 626     if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
 627     {
 628         ERR("Received context failure!\n");
 629         aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice);
 630     }
 631     pa_threaded_mainloop_signal(self->loop, 0);
 632 }
 633
 634 static void ALCpulsePlayback_streamStateCallback(pa_stream *stream, void *pdata)
 635 {
 636     ALCpulsePlayback *self = pdata;
 637     if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
 638     {
 639         ERR("Received stream failure!\n");
 640         aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice);
 641     }
 642     pa_threaded_mainloop_signal(self->loop, 0);
 643 }
 644
 645 static void ALCpulsePlayback_streamWriteCallback(pa_stream* UNUSED(p), size_t UNUSED(nbytes), void *pdata)
 646 {
 647     ALCpulsePlayback *self = pdata;
 648     pa_threaded_mainloop_signal(self->loop, 0);
 649 }
 650
 651 static void ALCpulsePlayback_sinkInfoCallback(pa_context *UNUSED(context), const pa_sink_info *info, int eol, void *pdata)
 652 {
 653     static const struct {
 654         enum DevFmtChannels chans;
 655         pa_channel_map map;
 656     } chanmaps[] = {
 657         { DevFmtX71, { 8, {
 658             PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
 659             PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,
 660             PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
 661             PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT
 662         } } },
 663         { DevFmtX61, { 7, {
 664             PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
 665             PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,
 666             PA_CHANNEL_POSITION_REAR_CENTER,
 667             PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT
 668         } } },
 669         { DevFmtX51, { 6, {
 670             PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
 671             PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,
 672             PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT
 673         } } },
 674         { DevFmtX51Rear, { 6, {
 675             PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
 676             PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,
 677             PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT
 678         } } },
 679         { DevFmtQuad, { 4, {
 680             PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
 681             PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT
 682         } } },
 683         { DevFmtStereo, { 2, {
 684             PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT
 685         } } },
 686         { DevFmtMono, { 1, {PA_CHANNEL_POSITION_MONO} } }
 687     };
 688     ALCpulsePlayback *self = pdata;
 689     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
 690     size_t i;
 691
 692     if(eol)
 693     {
 694         pa_threaded_mainloop_signal(self->loop, 0);
 695         return;
 696     }
 697
 698     for(i = 0;i < COUNTOF(chanmaps);i++)
 699     {
 700         if(pa_channel_map_superset(&info->channel_map, &chanmaps[i].map))
 701         {
 702             if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
 703                 device->FmtChans = chanmaps[i].chans;
 704             break;
 705         }
 706     }
 707     if(i == COUNTOF(chanmaps))
 708     {
 709         char chanmap_str[PA_CHANNEL_MAP_SNPRINT_MAX] = "";
 710         pa_channel_map_snprint(chanmap_str, sizeof(chanmap_str), &info->channel_map);
 711         WARN("Failed to find format for channel map:\n    %s\n", chanmap_str);
 712     }
 713
 714     if(info->active_port)
 715         TRACE("Active port: %s (%s)\n", info->active_port->name, info->active_port->description);
 716     device->IsHeadphones = (info->active_port &&
 717                             strcmp(info->active_port->name, "analog-output-headphones") == 0 &&
 718                             device->FmtChans == DevFmtStereo);
 719 }
 720
 721 static void ALCpulsePlayback_sinkNameCallback(pa_context *UNUSED(context), const pa_sink_info *info, int eol, void *pdata)
 722 {
 723     ALCpulsePlayback *self = pdata;
 724     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
 725
 726     if(eol)
 727     {
 728         pa_threaded_mainloop_signal(self->loop, 0);
 729         return;
 730     }
 731
 732     al_string_copy_cstr(&device->DeviceName, info->description);
 733 }
 734
 735
 736 static void ALCpulsePlayback_streamMovedCallback(pa_stream *stream, void *pdata)
 737 {
 738     ALCpulsePlayback *self = pdata;
 739
 740     al_string_copy_cstr(&self->device_name, pa_stream_get_device_name(stream));
 741
 742     TRACE("Stream moved to %s\n", al_string_get_cstr(self->device_name));
 743 }
 744
 745
 746 static pa_stream *ALCpulsePlayback_connectStream(const char *device_name,
 747     pa_threaded_mainloop *loop, pa_context *context,
 748     pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
 749     pa_channel_map *chanmap)
 750 {
 751     pa_stream_state_t state;
 752     pa_stream *stream;
 753
 754     stream = pa_stream_new_with_proplist(context, "Playback Stream", spec, chanmap, prop_filter);
 755     if(!stream)
 756     {
 757         ERR("pa_stream_new_with_proplist() failed: %s\n", pa_strerror(pa_context_errno(context)));
 758         return NULL;
 759     }
 760
 761     pa_stream_set_state_callback(stream, stream_state_callback, loop);
 762
 763     if(pa_stream_connect_playback(stream, device_name, attr, flags, NULL, NULL) < 0)
 764     {
 765         ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
 766         pa_stream_unref(stream);
 767         return NULL;
 768     }
 769
 770     while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
 771     {
 772         if(!PA_STREAM_IS_GOOD(state))
 773         {
 774             ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
 775             pa_stream_unref(stream);
 776             return NULL;
 777         }
 778
 779         pa_threaded_mainloop_wait(loop);
 780     }
 781     pa_stream_set_state_callback(stream, NULL, NULL);
 782
 783     return stream;
 784 }
 785
 786
 787 static int ALCpulsePlayback_mixerProc(void *ptr)
 788 {
 789     ALCpulsePlayback *self = ptr;
 790     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
 791     ALuint buffer_size;
 792     ALint update_size;
 793     size_t frame_size;
 794     ssize_t len;
 795
 796     SetRTPriority();
 797     althrd_setname(althrd_current(), MIXER_THREAD_NAME);
 798
 799     pa_threaded_mainloop_lock(self->loop);
 800     frame_size = pa_frame_size(&self->spec);
 801     update_size = device->UpdateSize * frame_size;
 802
 803     /* Sanitize buffer metrics, in case we actually have less than what we
 804      * asked for. */
 805     buffer_size = minu(update_size*device->NumUpdates, self->attr.tlength);
 806     update_size = minu(update_size, buffer_size/2);
 807     do {
 808         len = pa_stream_writable_size(self->stream) - self->attr.tlength +
 809               buffer_size;
 810         if(len < update_size)
 811         {
 812             if(pa_stream_is_corked(self->stream) == 1)
 813             {
 814                 pa_operation *o;
 815                 o = pa_stream_cork(self->stream, 0, NULL, NULL);
 816                 if(o) pa_operation_unref(o);
 817             }
 818             pa_threaded_mainloop_wait(self->loop);
 819             continue;
 820         }
 821         len -= len%update_size;
 822
 823         while(len > 0)
 824         {
 825             size_t newlen = len;
 826             void *buf;
 827             pa_free_cb_t free_func = NULL;
 828
 829             if(pa_stream_begin_write(self->stream, &buf, &newlen) < 0)
 830             {
 831                 buf = pa_xmalloc(newlen);
 832                 free_func = pa_xfree;
 833             }
 834
 835             aluMixData(device, buf, newlen/frame_size);
 836
 837             pa_stream_write(self->stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
 838             len -= newlen;
 839         }
 840     } while(!self->killNow && device->Connected);
 841     pa_threaded_mainloop_unlock(self->loop);
 842
 843     return 0;
 844 }
 845
 846
 847 static ALCenum ALCpulsePlayback_open(ALCpulsePlayback *self, const ALCchar *name)
 848 {
 849     const_al_string dev_name = AL_STRING_INIT_STATIC();
 850     const char *pulse_name = NULL;
 851     pa_stream_flags_t flags;
 852     pa_sample_spec spec;
 853
 854     if(name)
 855     {
 856         const DevMap *iter;
 857
 858         if(VECTOR_SIZE(PlaybackDevices) == 0)
 859             ALCpulsePlayback_probeDevices();
 860
 861 #define MATCH_NAME(iter) (al_string_cmp_cstr((iter)->name, name) == 0)
 862         VECTOR_FIND_IF(iter, const DevMap, PlaybackDevices, MATCH_NAME);
 863 #undef MATCH_NAME
 864         if(iter == VECTOR_ITER_END(PlaybackDevices))
 865             return ALC_INVALID_VALUE;
 866         pulse_name = al_string_get_cstr(iter->device_name);
 867         dev_name = iter->name;
 868     }
 869
 870     if(!pulse_open(&self->loop, &self->context, ALCpulsePlayback_contextStateCallback, self))
 871         return ALC_INVALID_VALUE;
 872
 873     pa_threaded_mainloop_lock(self->loop);
 874
 875     flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
 876             PA_STREAM_FIX_CHANNELS;
 877     if(!GetConfigValueBool(NULL, "pulse", "allow-moves", 0))
 878         flags |= PA_STREAM_DONT_MOVE;
 879
 880     spec.format = PA_SAMPLE_S16NE;
 881     spec.rate = 44100;
 882     spec.channels = 2;
 883
 884     TRACE("Connecting to \"%s\"\n", pulse_name ? pulse_name : "(default)");
 885     self->stream = ALCpulsePlayback_connectStream(pulse_name, self->loop, self->context,
 886                                                   flags, NULL, &spec, NULL);
 887     if(!self->stream)
 888     {
 889         pa_threaded_mainloop_unlock(self->loop);
 890         pulse_close(self->loop, self->context, self->stream);
 891         self->loop = NULL;
 892         self->context = NULL;
 893         return ALC_INVALID_VALUE;
 894     }
 895     pa_stream_set_moved_callback(self->stream, ALCpulsePlayback_streamMovedCallback, self);
 896
 897     al_string_copy_cstr(&self->device_name, pa_stream_get_device_name(self->stream));
 898     if(al_string_empty(dev_name))
 899     {
 900         pa_operation *o = pa_context_get_sink_info_by_name(
 901             self->context, al_string_get_cstr(self->device_name),
 902             ALCpulsePlayback_sinkNameCallback, self
 903         );
 904         wait_for_operation(o, self->loop);
 905     }
 906     else
 907     {
 908         ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
 909         al_string_copy(&device->DeviceName, dev_name);
 910     }
 911
 912     pa_threaded_mainloop_unlock(self->loop);
 913
 914     return ALC_NO_ERROR;
 915 }
 916
 917 static void ALCpulsePlayback_close(ALCpulsePlayback *self)
 918 {
 919     pulse_close(self->loop, self->context, self->stream);
 920     self->loop = NULL;
 921     self->context = NULL;
 922     self->stream = NULL;
 923
 924     al_string_clear(&self->device_name);
 925 }
 926
 927 static ALCboolean ALCpulsePlayback_reset(ALCpulsePlayback *self)
 928 {
 929     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
 930     pa_stream_flags_t flags = 0;
 931     const char *mapname = NULL;
 932     pa_channel_map chanmap;
 933     pa_operation *o;
 934     ALuint len;
 935
 936     pa_threaded_mainloop_lock(self->loop);
 937
 938     if(self->stream)
 939     {
 940         pa_stream_set_state_callback(self->stream, NULL, NULL);
 941         pa_stream_set_moved_callback(self->stream, NULL, NULL);
 942         pa_stream_set_write_callback(self->stream, NULL, NULL);
 943         pa_stream_set_buffer_attr_callback(self->stream, NULL, NULL);
 944         pa_stream_disconnect(self->stream);
 945         pa_stream_unref(self->stream);
 946         self->stream = NULL;
 947     }
 948
 949     o = pa_context_get_sink_info_by_name(self->context, al_string_get_cstr(self->device_name),
 950                                          ALCpulsePlayback_sinkInfoCallback, self);
 951     wait_for_operation(o, self->loop);
 952
 953     if(GetConfigValueBool(al_string_get_cstr(device->DeviceName), "pulse", "fix-rate", 0) ||
 954        !(device->Flags&DEVICE_FREQUENCY_REQUEST))
 955         flags |= PA_STREAM_FIX_RATE;
 956     flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE;
 957     flags |= PA_STREAM_ADJUST_LATENCY;
 958     flags |= PA_STREAM_START_CORKED;
 959     if(!GetConfigValueBool(NULL, "pulse", "allow-moves", 0))
 960         flags |= PA_STREAM_DONT_MOVE;
 961
 962     switch(device->FmtType)
 963     {
 964         case DevFmtByte:
 965             device->FmtType = DevFmtUByte;
 966             /* fall-through */
 967         case DevFmtUByte:
 968             self->spec.format = PA_SAMPLE_U8;
 969             break;
 970         case DevFmtUShort:
 971             device->FmtType = DevFmtShort;
 972             /* fall-through */
 973         case DevFmtShort:
 974             self->spec.format = PA_SAMPLE_S16NE;
 975             break;
 976         case DevFmtUInt:
 977             device->FmtType = DevFmtInt;
 978             /* fall-through */
 979         case DevFmtInt:
 980             self->spec.format = PA_SAMPLE_S32NE;
 981             break;
 982         case DevFmtFloat:
 983             self->spec.format = PA_SAMPLE_FLOAT32NE;
 984             break;
 985     }
 986     self->spec.rate = device->Frequency;
 987     self->spec.channels = ChannelsFromDevFmt(device->FmtChans);
 988
 989     if(pa_sample_spec_valid(&self->spec) == 0)
 990     {
 991         ERR("Invalid sample format\n");
 992         pa_threaded_mainloop_unlock(self->loop);
 993         return ALC_FALSE;
 994     }
 995
 996     switch(device->FmtChans)
 997     {
 998         case DevFmtMono:
 999             mapname = "mono";
1000             break;
1001         case DevFmtBFormat3D:
1002             device->FmtChans = DevFmtStereo;
1003             /*fall-through*/
1004         case DevFmtStereo:
1005             mapname = "front-left,front-right";
1006             break;
1007         case DevFmtQuad:
1008             mapname = "front-left,front-right,rear-left,rear-right";
1009             break;
1010         case DevFmtX51:
1011             mapname = "front-left,front-right,front-center,lfe,side-left,side-right";
1012             break;
1013         case DevFmtX51Rear:
1014             mapname = "front-left,front-right,front-center,lfe,rear-left,rear-right";
1015             break;
1016         case DevFmtX61:
1017             mapname = "front-left,front-right,front-center,lfe,rear-center,side-left,side-right";
1018             break;
1019         case DevFmtX71:
1020             mapname = "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right";
1021             break;
1022     }
1023     if(!pa_channel_map_parse(&chanmap, mapname))
1024     {
1025         ERR("Failed to build channel map for %s\n", DevFmtChannelsString(device->FmtChans));
1026         pa_threaded_mainloop_unlock(self->loop);
1027         return ALC_FALSE;
1028     }
1029     SetDefaultWFXChannelOrder(device);
1030
1031     self->attr.fragsize = -1;
1032     self->attr.prebuf = 0;
1033     self->attr.minreq = device->UpdateSize * pa_frame_size(&self->spec);
1034     self->attr.tlength = self->attr.minreq * maxu(device->NumUpdates, 2);
1035     self->attr.maxlength = -1;
1036
1037     self->stream = ALCpulsePlayback_connectStream(al_string_get_cstr(self->device_name),
1038                                                   self->loop, self->context, flags,
1039                                                   &self->attr, &self->spec, &chanmap);
1040     if(!self->stream)
1041     {
1042         pa_threaded_mainloop_unlock(self->loop);
1043         return ALC_FALSE;
1044     }
1045     pa_stream_set_state_callback(self->stream, ALCpulsePlayback_streamStateCallback, self);
1046     pa_stream_set_moved_callback(self->stream, ALCpulsePlayback_streamMovedCallback, self);
1047     pa_stream_set_write_callback(self->stream, ALCpulsePlayback_streamWriteCallback, self);
1048
1049     self->spec = *(pa_stream_get_sample_spec(self->stream));
1050     if(device->Frequency != self->spec.rate)
1051     {
1052         /* Server updated our playback rate, so modify the buffer attribs
1053          * accordingly. */
1054         device->NumUpdates = (ALuint)clampd(
1055             (ALdouble)device->NumUpdates/device->Frequency*self->spec.rate + 0.5, 2.0, 16.0
1056         );
1057
1058         self->attr.minreq  = device->UpdateSize * pa_frame_size(&self->spec);
1059         self->attr.tlength = self->attr.minreq * device->NumUpdates;
1060         self->attr.maxlength = -1;
1061         self->attr.prebuf  = 0;
1062
1063         o = pa_stream_set_buffer_attr(self->stream, &self->attr,
1064                                       stream_success_callback, self->loop);
1065         wait_for_operation(o, self->loop);
1066
1067         device->Frequency = self->spec.rate;
1068     }
1069
1070     pa_stream_set_buffer_attr_callback(self->stream, ALCpulsePlayback_bufferAttrCallback, self);
1071     ALCpulsePlayback_bufferAttrCallback(self->stream, self);
1072
1073     len = self->attr.minreq / pa_frame_size(&self->spec);
1074     device->NumUpdates = (ALuint)clampd(
1075         (ALdouble)device->NumUpdates/len*device->UpdateSize + 0.5, 2.0, 16.0
1076     );
1077     device->UpdateSize = len;
1078
1079     /* HACK: prebuf should be 0 as that's what we set it to. However on some
1080      * systems it comes back as non-0, so we have to make sure the device will
1081      * write enough audio to start playback. The lack of manual start control
1082      * may have unintended consequences, but it's better than not starting at
1083      * all.
1084      */
1085     if(self->attr.prebuf != 0)
1086     {
1087         len = self->attr.prebuf / pa_frame_size(&self->spec);
1088         if(len <= device->UpdateSize*device->NumUpdates)
1089             ERR("Non-0 prebuf, %u samples (%u bytes), device has %u samples\n",
1090                 len, self->attr.prebuf, device->UpdateSize*device->NumUpdates);
1091         else
1092         {
1093             ERR("Large prebuf, %u samples (%u bytes), increasing device from %u samples",
1094                 len, self->attr.prebuf, device->UpdateSize*device->NumUpdates);
1095             device->NumUpdates = (len+device->UpdateSize-1) / device->UpdateSize;
1096         }
1097     }
1098
1099     pa_threaded_mainloop_unlock(self->loop);
1100     return ALC_TRUE;
1101 }
1102
1103 static ALCboolean ALCpulsePlayback_start(ALCpulsePlayback *self)
1104 {
1105     self->killNow = AL_FALSE;
1106     if(althrd_create(&self->thread, ALCpulsePlayback_mixerProc, self) != althrd_success)
1107         return ALC_FALSE;
1108     return ALC_TRUE;
1109 }
1110
1111 static void ALCpulsePlayback_stop(ALCpulsePlayback *self)
1112 {
1113     pa_operation *o;
1114     int res;
1115
1116     if(!self->stream || self->killNow)
1117         return;
1118
1119     self->killNow = AL_TRUE;
1120     /* Signal the main loop in case PulseAudio isn't sending us audio requests
1121      * (e.g. if the device is suspended). We need to lock the mainloop in case
1122      * the mixer is between checking the killNow flag but before waiting for
1123      * the signal.
1124      */
1125     pa_threaded_mainloop_lock(self->loop);
1126     pa_threaded_mainloop_unlock(self->loop);
1127     pa_threaded_mainloop_signal(self->loop, 0);
1128     althrd_join(self->thread, &res);
1129
1130     pa_threaded_mainloop_lock(self->loop);
1131
1132     o = pa_stream_cork(self->stream, 1, stream_success_callback, self->loop);
1133     wait_for_operation(o, self->loop);
1134
1135     pa_threaded_mainloop_unlock(self->loop);
1136 }
1137
1138
1139 static ALint64 ALCpulsePlayback_getLatency(ALCpulsePlayback *self)
1140 {
1141     pa_usec_t latency = 0;
1142     int neg, err;
1143
1144     if((err=pa_stream_get_latency(self->stream, &latency, &neg)) != 0)
1145     {
1146         /* FIXME: if err = -PA_ERR_NODATA, it means we were called too soon
1147          * after starting the stream and no timing info has been received from
1148          * the server yet. Should we wait, possibly stalling the app, or give a
1149          * dummy value? Either way, it shouldn't be 0. */
1150         if(err != -PA_ERR_NODATA)
1151             ERR("Failed to get stream latency: 0x%x\n", err);
1152         return 0;
1153     }
1154
1155     if(neg) latency = 0;
1156     return (ALint64)minu64(latency, U64(0x7fffffffffffffff)/1000) * 1000;
1157 }
1158
1159
1160 static void ALCpulsePlayback_lock(ALCpulsePlayback *self)
1161 {
1162     pa_threaded_mainloop_lock(self->loop);
1163 }
1164
1165 static void ALCpulsePlayback_unlock(ALCpulsePlayback *self)
1166 {
1167     pa_threaded_mainloop_unlock(self->loop);
1168 }
1169
1170
1171 typedef struct ALCpulseCapture {
1172     DERIVE_FROM_TYPE(ALCbackend);
1173
1174     al_string device_name;
1175
1176     const void *cap_store;
1177     size_t cap_len;
1178     size_t cap_remain;
1179
1180     ALCuint last_readable;
1181
1182     pa_buffer_attr attr;
1183     pa_sample_spec spec;
1184
1185     pa_threaded_mainloop *loop;
1186
1187     pa_stream *stream;
1188     pa_context *context;
1189 } ALCpulseCapture;
1190
1191 static void ALCpulseCapture_deviceCallback(pa_context *context, const pa_source_info *info, int eol, void *pdata);
1192 static void ALCpulseCapture_probeDevices(void);
1193
1194 static void ALCpulseCapture_contextStateCallback(pa_context *context, void *pdata);
1195 static void ALCpulseCapture_streamStateCallback(pa_stream *stream, void *pdata);
1196 static void ALCpulseCapture_sourceNameCallback(pa_context *context, const pa_source_info *info, int eol, void *pdata);
1197 static void ALCpulseCapture_streamMovedCallback(pa_stream *stream, void *pdata);
1198 static pa_stream *ALCpulseCapture_connectStream(const char *device_name,
1199                                                 pa_threaded_mainloop *loop, pa_context *context,
1200                                                 pa_stream_flags_t flags, pa_buffer_attr *attr,
1201                                                 pa_sample_spec *spec, pa_channel_map *chanmap);
1202
1203 static void ALCpulseCapture_Construct(ALCpulseCapture *self, ALCdevice *device);
1204 static void ALCpulseCapture_Destruct(ALCpulseCapture *self);
1205 static ALCenum ALCpulseCapture_open(ALCpulseCapture *self, const ALCchar *name);
1206 static void ALCpulseCapture_close(ALCpulseCapture *self);
1207 static DECLARE_FORWARD(ALCpulseCapture, ALCbackend, ALCboolean, reset)
1208 static ALCboolean ALCpulseCapture_start(ALCpulseCapture *self);
1209 static void ALCpulseCapture_stop(ALCpulseCapture *self);
1210 static ALCenum ALCpulseCapture_captureSamples(ALCpulseCapture *self, ALCvoid *buffer, ALCuint samples);
1211 static ALCuint ALCpulseCapture_availableSamples(ALCpulseCapture *self);
1212 static ALint64 ALCpulseCapture_getLatency(ALCpulseCapture *self);
1213 static void ALCpulseCapture_lock(ALCpulseCapture *self);
1214 static void ALCpulseCapture_unlock(ALCpulseCapture *self);
1215 DECLARE_DEFAULT_ALLOCATORS(ALCpulseCapture)
1216
1217 DEFINE_ALCBACKEND_VTABLE(ALCpulseCapture);
1218
1219
1220 static void ALCpulseCapture_Construct(ALCpulseCapture *self, ALCdevice *device)
1221 {
1222     ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
1223     SET_VTABLE2(ALCpulseCapture, ALCbackend, self);
1224
1225     AL_STRING_INIT(self->device_name);
1226 }
1227
1228 static void ALCpulseCapture_Destruct(ALCpulseCapture *self)
1229 {
1230     AL_STRING_DEINIT(self->device_name);
1231     ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
1232 }
1233
1234
1235 static void ALCpulseCapture_deviceCallback(pa_context *UNUSED(context), const pa_source_info *info, int eol, void *pdata)
1236 {
1237     pa_threaded_mainloop *loop = pdata;
1238     const DevMap *iter;
1239     DevMap entry;
1240     int count;
1241
1242     if(eol)
1243     {
1244         pa_threaded_mainloop_signal(loop, 0);
1245         return;
1246     }
1247
1248 #define MATCH_INFO_NAME(iter) (al_string_cmp_cstr((iter)->device_name, info->name) == 0)
1249     VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_INFO_NAME);
1250     if(iter != VECTOR_ITER_END(CaptureDevices)) return;
1251 #undef MATCH_INFO_NAME
1252
1253     AL_STRING_INIT(entry.name);
1254     AL_STRING_INIT(entry.device_name);
1255
1256     al_string_copy_cstr(&entry.device_name, info->name);
1257
1258     count = 0;
1259     while(1)
1260     {
1261         al_string_copy_cstr(&entry.name, info->description);
1262         if(count != 0)
1263         {
1264             char str[64];
1265             snprintf(str, sizeof(str), " #%d", count+1);
1266             al_string_append_cstr(&entry.name, str);
1267         }
1268
1269 #define MATCH_ENTRY(i) (al_string_cmp(entry.name, (i)->name) == 0)
1270         VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_ENTRY);
1271         if(iter == VECTOR_ITER_END(CaptureDevices)) break;
1272 #undef MATCH_ENTRY
1273         count++;
1274     }
1275
1276     TRACE("Got device \"%s\", \"%s\"\n", al_string_get_cstr(entry.name), al_string_get_cstr(entry.device_name));
1277
1278     VECTOR_PUSH_BACK(CaptureDevices, entry);
1279 }
1280
1281 static void ALCpulseCapture_probeDevices(void)
1282 {
1283     pa_threaded_mainloop *loop;
1284
1285     clear_devlist(&CaptureDevices);
1286
1287     if((loop=pa_threaded_mainloop_new()) &&
1288        pa_threaded_mainloop_start(loop) >= 0)
1289     {
1290         pa_context *context;
1291
1292         pa_threaded_mainloop_lock(loop);
1293         context = connect_context(loop, AL_FALSE);
1294         if(context)
1295         {
1296             pa_operation *o;
1297             pa_stream_flags_t flags;
1298             pa_sample_spec spec;
1299             pa_stream *stream;
1300
1301             flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
1302                     PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
1303
1304             spec.format = PA_SAMPLE_S16NE;
1305             spec.rate = 44100;
1306             spec.channels = 1;
1307
1308             stream = ALCpulseCapture_connectStream(NULL, loop, context, flags,
1309                                                    NULL, &spec, NULL);
1310             if(stream)
1311             {
1312                 o = pa_context_get_source_info_by_name(context, pa_stream_get_device_name(stream),
1313                                                        ALCpulseCapture_deviceCallback, loop);
1314                 wait_for_operation(o, loop);
1315
1316                 pa_stream_disconnect(stream);
1317                 pa_stream_unref(stream);
1318                 stream = NULL;
1319             }
1320
1321             o = pa_context_get_source_info_list(context, ALCpulseCapture_deviceCallback, loop);
1322             wait_for_operation(o, loop);
1323
1324             pa_context_disconnect(context);
1325             pa_context_unref(context);
1326         }
1327         pa_threaded_mainloop_unlock(loop);
1328         pa_threaded_mainloop_stop(loop);
1329     }
1330     if(loop)
1331         pa_threaded_mainloop_free(loop);
1332 }
1333
1334
1335 static void ALCpulseCapture_contextStateCallback(pa_context *context, void *pdata)
1336 {
1337     ALCpulseCapture *self = pdata;
1338     if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
1339     {
1340         ERR("Received context failure!\n");
1341         aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice);
1342     }
1343     pa_threaded_mainloop_signal(self->loop, 0);
1344 }
1345
1346 static void ALCpulseCapture_streamStateCallback(pa_stream *stream, void *pdata)
1347 {
1348     ALCpulseCapture *self = pdata;
1349     if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
1350     {
1351         ERR("Received stream failure!\n");
1352         aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice);
1353     }
1354     pa_threaded_mainloop_signal(self->loop, 0);
1355 }
1356
1357
1358 static void ALCpulseCapture_sourceNameCallback(pa_context *UNUSED(context), const pa_source_info *info, int eol, void *pdata)
1359 {
1360     ALCpulseCapture *self = pdata;
1361     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1362
1363     if(eol)
1364     {
1365         pa_threaded_mainloop_signal(self->loop, 0);
1366         return;
1367     }
1368
1369     al_string_copy_cstr(&device->DeviceName, info->description);
1370 }
1371
1372
1373 static void ALCpulseCapture_streamMovedCallback(pa_stream *stream, void *pdata)
1374 {
1375     ALCpulseCapture *self = pdata;
1376
1377     al_string_copy_cstr(&self->device_name, pa_stream_get_device_name(stream));
1378
1379     TRACE("Stream moved to %s\n", al_string_get_cstr(self->device_name));
1380 }
1381
1382
1383 static pa_stream *ALCpulseCapture_connectStream(const char *device_name,
1384     pa_threaded_mainloop *loop, pa_context *context,
1385     pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
1386     pa_channel_map *chanmap)
1387 {
1388     pa_stream_state_t state;
1389     pa_stream *stream;
1390
1391     stream = pa_stream_new_with_proplist(context, "Capture Stream", spec, chanmap, prop_filter);
1392     if(!stream)
1393     {
1394         ERR("pa_stream_new_with_proplist() failed: %s\n", pa_strerror(pa_context_errno(context)));
1395         return NULL;
1396     }
1397
1398     pa_stream_set_state_callback(stream, stream_state_callback, loop);
1399
1400     if(pa_stream_connect_record(stream, device_name, attr, flags) < 0)
1401     {
1402         ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
1403         pa_stream_unref(stream);
1404         return NULL;
1405     }
1406
1407     while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
1408     {
1409         if(!PA_STREAM_IS_GOOD(state))
1410         {
1411             ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
1412             pa_stream_unref(stream);
1413             return NULL;
1414         }
1415
1416         pa_threaded_mainloop_wait(loop);
1417     }
1418     pa_stream_set_state_callback(stream, NULL, NULL);
1419
1420     return stream;
1421 }
1422
1423
1424 static ALCenum ALCpulseCapture_open(ALCpulseCapture *self, const ALCchar *name)
1425 {
1426     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1427     const char *pulse_name = NULL;
1428     pa_stream_flags_t flags = 0;
1429     pa_channel_map chanmap;
1430     ALuint samples;
1431
1432     if(name)
1433     {
1434         const DevMap *iter;
1435
1436         if(VECTOR_SIZE(CaptureDevices) == 0)
1437             ALCpulseCapture_probeDevices();
1438
1439 #define MATCH_NAME(iter) (al_string_cmp_cstr((iter)->name, name) == 0)
1440         VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_NAME);
1441 #undef MATCH_NAME
1442         if(iter == VECTOR_ITER_END(CaptureDevices))
1443             return ALC_INVALID_VALUE;
1444         pulse_name = al_string_get_cstr(iter->device_name);
1445         al_string_copy(&device->DeviceName, iter->name);
1446     }
1447
1448     if(!pulse_open(&self->loop, &self->context, ALCpulseCapture_contextStateCallback, self))
1449         return ALC_INVALID_VALUE;
1450
1451     pa_threaded_mainloop_lock(self->loop);
1452
1453     self->spec.rate = device->Frequency;
1454     self->spec.channels = ChannelsFromDevFmt(device->FmtChans);
1455
1456     switch(device->FmtType)
1457     {
1458         case DevFmtUByte:
1459             self->spec.format = PA_SAMPLE_U8;
1460             break;
1461         case DevFmtShort:
1462             self->spec.format = PA_SAMPLE_S16NE;
1463             break;
1464         case DevFmtInt:
1465             self->spec.format = PA_SAMPLE_S32NE;
1466             break;
1467         case DevFmtFloat:
1468             self->spec.format = PA_SAMPLE_FLOAT32NE;
1469             break;
1470         case DevFmtByte:
1471         case DevFmtUShort:
1472         case DevFmtUInt:
1473             ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));
1474             pa_threaded_mainloop_unlock(self->loop);
1475             goto fail;
1476     }
1477
1478     if(pa_sample_spec_valid(&self->spec) == 0)
1479     {
1480         ERR("Invalid sample format\n");
1481         pa_threaded_mainloop_unlock(self->loop);
1482         goto fail;
1483     }
1484
1485     if(!pa_channel_map_init_auto(&chanmap, self->spec.channels, PA_CHANNEL_MAP_WAVEEX))
1486     {
1487         ERR("Couldn't build map for channel count (%d)!\n", self->spec.channels);
1488         pa_threaded_mainloop_unlock(self->loop);
1489         goto fail;
1490     }
1491
1492     samples = device->UpdateSize * device->NumUpdates;
1493     samples = maxu(samples, 100 * device->Frequency / 1000);
1494
1495     self->attr.minreq = -1;
1496     self->attr.prebuf = -1;
1497     self->attr.maxlength = samples * pa_frame_size(&self->spec);
1498     self->attr.tlength = -1;
1499     self->attr.fragsize = minu(samples, 50*device->Frequency/1000) *
1500                           pa_frame_size(&self->spec);
1501
1502     flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
1503     if(!GetConfigValueBool(NULL, "pulse", "allow-moves", 0))
1504         flags |= PA_STREAM_DONT_MOVE;
1505
1506     TRACE("Connecting to \"%s\"\n", pulse_name ? pulse_name : "(default)");
1507     self->stream = ALCpulseCapture_connectStream(pulse_name, self->loop, self->context,
1508                                                  flags, &self->attr, &self->spec,
1509                                                  &chanmap);
1510     if(!self->stream)
1511     {
1512         pa_threaded_mainloop_unlock(self->loop);
1513         goto fail;
1514     }
1515     pa_stream_set_moved_callback(self->stream, ALCpulseCapture_streamMovedCallback, self);
1516     pa_stream_set_state_callback(self->stream, ALCpulseCapture_streamStateCallback, self);
1517
1518     al_string_copy_cstr(&self->device_name, pa_stream_get_device_name(self->stream));
1519     if(al_string_empty(device->DeviceName))
1520     {
1521         pa_operation *o = pa_context_get_source_info_by_name(
1522             self->context, al_string_get_cstr(self->device_name),
1523             ALCpulseCapture_sourceNameCallback, self
1524         );
1525         wait_for_operation(o, self->loop);
1526     }
1527
1528     pa_threaded_mainloop_unlock(self->loop);
1529     return ALC_NO_ERROR;
1530
1531 fail:
1532     pulse_close(self->loop, self->context, self->stream);
1533     self->loop = NULL;
1534     self->context = NULL;
1535     self->stream = NULL;
1536
1537     return ALC_INVALID_VALUE;
1538 }
1539
1540 static void ALCpulseCapture_close(ALCpulseCapture *self)
1541 {
1542     pulse_close(self->loop, self->context, self->stream);
1543     self->loop = NULL;
1544     self->context = NULL;
1545     self->stream = NULL;
1546
1547     al_string_clear(&self->device_name);
1548 }
1549
1550 static ALCboolean ALCpulseCapture_start(ALCpulseCapture *self)
1551 {
1552     pa_operation *o;
1553     o = pa_stream_cork(self->stream, 0, stream_success_callback, self->loop);
1554     wait_for_operation(o, self->loop);
1555
1556     return ALC_TRUE;
1557 }
1558
1559 static void ALCpulseCapture_stop(ALCpulseCapture *self)
1560 {
1561     pa_operation *o;
1562     o = pa_stream_cork(self->stream, 1, stream_success_callback, self->loop);
1563     wait_for_operation(o, self->loop);
1564 }
1565
1566 static ALCenum ALCpulseCapture_captureSamples(ALCpulseCapture *self, ALCvoid *buffer, ALCuint samples)
1567 {
1568     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1569     ALCuint todo = samples * pa_frame_size(&self->spec);
1570
1571     /* Capture is done in fragment-sized chunks, so we loop until we get all
1572      * that's available */
1573     self->last_readable -= todo;
1574     while(todo > 0)
1575     {
1576         size_t rem = todo;
1577
1578         if(self->cap_len == 0)
1579         {
1580             pa_stream_state_t state;
1581
1582             state = pa_stream_get_state(self->stream);
1583             if(!PA_STREAM_IS_GOOD(state))
1584             {
1585                 aluHandleDisconnect(device);
1586                 break;
1587             }
1588             if(pa_stream_peek(self->stream, &self->cap_store, &self->cap_len) < 0)
1589             {
1590                 ERR("pa_stream_peek() failed: %s\n",
1591                     pa_strerror(pa_context_errno(self->context)));
1592                 aluHandleDisconnect(device);
1593                 break;
1594             }
1595             self->cap_remain = self->cap_len;
1596         }
1597         if(rem > self->cap_remain)
1598             rem = self->cap_remain;
1599
1600         memcpy(buffer, self->cap_store, rem);
1601
1602         buffer = (ALbyte*)buffer + rem;
1603         todo -= rem;
1604
1605         self->cap_store = (ALbyte*)self->cap_store + rem;
1606         self->cap_remain -= rem;
1607         if(self->cap_remain == 0)
1608         {
1609             pa_stream_drop(self->stream);
1610             self->cap_len = 0;
1611         }
1612     }
1613     if(todo > 0)
1614         memset(buffer, ((device->FmtType==DevFmtUByte) ? 0x80 : 0), todo);
1615
1616     return ALC_NO_ERROR;
1617 }
1618
1619 static ALCuint ALCpulseCapture_availableSamples(ALCpulseCapture *self)
1620 {
1621     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1622     size_t readable = self->cap_remain;
1623
1624     if(device->Connected)
1625     {
1626         ssize_t got = pa_stream_readable_size(self->stream);
1627         if(got < 0)
1628         {
1629             ERR("pa_stream_readable_size() failed: %s\n", pa_strerror(got));
1630             aluHandleDisconnect(device);
1631         }
1632         else if((size_t)got > self->cap_len)
1633             readable += got - self->cap_len;
1634     }
1635
1636     if(self->last_readable < readable)
1637         self->last_readable = readable;
1638     return self->last_readable / pa_frame_size(&self->spec);
1639 }
1640
1641
1642 static ALint64 ALCpulseCapture_getLatency(ALCpulseCapture *self)
1643 {
1644     pa_usec_t latency = 0;
1645     int neg;
1646
1647     if(pa_stream_get_latency(self->stream, &latency, &neg) != 0)
1648     {
1649         ERR("Failed to get stream latency!\n");
1650         return 0;
1651     }
1652
1653     if(neg) latency = 0;
1654     return (ALint64)minu64(latency, U64(0x7fffffffffffffff)/1000) * 1000;
1655 }
1656
1657
1658 static void ALCpulseCapture_lock(ALCpulseCapture *self)
1659 {
1660     pa_threaded_mainloop_lock(self->loop);
1661 }
1662
1663 static void ALCpulseCapture_unlock(ALCpulseCapture *self)
1664 {
1665     pa_threaded_mainloop_unlock(self->loop);
1666 }
1667
1668
1669 typedef struct ALCpulseBackendFactory {
1670     DERIVE_FROM_TYPE(ALCbackendFactory);
1671 } ALCpulseBackendFactory;
1672 #define ALCPULSEBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCpulseBackendFactory, ALCbackendFactory) } }
1673
1674 static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory *self);
1675 static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory *self);
1676 static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory *self, ALCbackend_Type type);
1677 static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory *self, enum DevProbe type);
1678 static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory *self, ALCdevice *device, ALCbackend_Type type);
1679
1680 DEFINE_ALCBACKENDFACTORY_VTABLE(ALCpulseBackendFactory);
1681
1682
1683 static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory* UNUSED(self))
1684 {
1685     ALCboolean ret = ALC_FALSE;
1686
1687     VECTOR_INIT(PlaybackDevices);
1688     VECTOR_INIT(CaptureDevices);
1689
1690     if(pulse_load())
1691     {
1692         pa_threaded_mainloop *loop;
1693
1694         pulse_ctx_flags = 0;
1695         if(!GetConfigValueBool(NULL, "pulse", "spawn-server", 1))
1696             pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
1697
1698         if((loop=pa_threaded_mainloop_new()) &&
1699            pa_threaded_mainloop_start(loop) >= 0)
1700         {
1701             pa_context *context;
1702
1703             pa_threaded_mainloop_lock(loop);
1704             context = connect_context(loop, AL_TRUE);
1705             if(context)
1706             {
1707                 ret = ALC_TRUE;
1708
1709                 /* Some libraries (Phonon, Qt) set some pulseaudio properties
1710                  * through environment variables, which causes all streams in
1711                  * the process to inherit them. This attempts to filter those
1712                  * properties out by setting them to 0-length data. */
1713                 prop_filter = pa_proplist_new();
1714                 pa_proplist_set(prop_filter, PA_PROP_MEDIA_ROLE, NULL, 0);
1715                 pa_proplist_set(prop_filter, "phonon.streamid", NULL, 0);
1716
1717                 pa_context_disconnect(context);
1718                 pa_context_unref(context);
1719             }
1720             pa_threaded_mainloop_unlock(loop);
1721             pa_threaded_mainloop_stop(loop);
1722         }
1723         if(loop)
1724             pa_threaded_mainloop_free(loop);
1725     }
1726
1727     return ret;
1728 }
1729
1730 static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory* UNUSED(self))
1731 {
1732     clear_devlist(&PlaybackDevices);
1733     VECTOR_DEINIT(PlaybackDevices);
1734
1735     clear_devlist(&CaptureDevices);
1736     VECTOR_DEINIT(CaptureDevices);
1737
1738     if(prop_filter)
1739         pa_proplist_free(prop_filter);
1740     prop_filter = NULL;
1741
1742     /* PulseAudio doesn't like being CloseLib'd sometimes */
1743 }
1744
1745 static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory* UNUSED(self), ALCbackend_Type type)
1746 {
1747     if(type == ALCbackend_Playback || type == ALCbackend_Capture)
1748         return ALC_TRUE;
1749     return ALC_FALSE;
1750 }
1751
1752 static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory* UNUSED(self), enum DevProbe type)
1753 {
1754     switch(type)
1755     {
1756         case ALL_DEVICE_PROBE:
1757             ALCpulsePlayback_probeDevices();
1758 #define APPEND_ALL_DEVICES_LIST(e)  AppendAllDevicesList(al_string_get_cstr((e)->name))
1759             VECTOR_FOR_EACH(const DevMap, PlaybackDevices, APPEND_ALL_DEVICES_LIST);
1760 #undef APPEND_ALL_DEVICES_LIST
1761             break;
1762
1763         case CAPTURE_DEVICE_PROBE:
1764             ALCpulseCapture_probeDevices();
1765 #define APPEND_CAPTURE_DEVICE_LIST(e) AppendCaptureDeviceList(al_string_get_cstr((e)->name))
1766             VECTOR_FOR_EACH(const DevMap, CaptureDevices, APPEND_CAPTURE_DEVICE_LIST);
1767 #undef APPEND_CAPTURE_DEVICE_LIST
1768             break;
1769     }
1770 }
1771
1772 static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type)
1773 {
1774     if(type == ALCbackend_Playback)
1775     {
1776         ALCpulsePlayback *backend;
1777         NEW_OBJ(backend, ALCpulsePlayback)(device);
1778         if(!backend) return NULL;
1779         return STATIC_CAST(ALCbackend, backend);
1780     }
1781     if(type == ALCbackend_Capture)
1782     {
1783         ALCpulseCapture *backend;
1784         NEW_OBJ(backend, ALCpulseCapture)(device);
1785         if(!backend) return NULL;
1786         return STATIC_CAST(ALCbackend, backend);
1787     }
1788
1789     return NULL;
1790 }
1791
1792
1793 #else /* PA_API_VERSION == 12 */
1794
1795 #warning "Unsupported API version, backend will be unavailable!"
1796
1797 typedef struct ALCpulseBackendFactory {
1798     DERIVE_FROM_TYPE(ALCbackendFactory);
1799 } ALCpulseBackendFactory;
1800 #define ALCPULSEBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCpulseBackendFactory, ALCbackendFactory) } }
1801
1802 static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory* UNUSED(self))
1803 {
1804     return ALC_FALSE;
1805 }
1806
1807 static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory* UNUSED(self))
1808 {
1809 }
1810
1811 static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory* UNUSED(self), ALCbackend_Type UNUSED(type))
1812 {
1813     return ALC_FALSE;
1814 }
1815
1816 static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory* UNUSED(self), enum DevProbe UNUSED(type))
1817 {
1818 }
1819
1820 static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory* UNUSED(self), ALCdevice* UNUSED(device), ALCbackend_Type UNUSED(type))
1821 {
1822     return NULL;
1823 }
1824
1825 DEFINE_ALCBACKENDFACTORY_VTABLE(ALCpulseBackendFactory);
1826
1827 #endif /* PA_API_VERSION == 12 */
1828
1829 ALCbackendFactory *ALCpulseBackendFactory_getFactory(void)
1830 {
1831     static ALCpulseBackendFactory factory = ALCPULSEBACKENDFACTORY_INITIALIZER;
1832     return STATIC_CAST(ALCbackendFactory, &factory);
1833 }