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, 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 ClockLatency ALCpulsePlayback_getClockLatency(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_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_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_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 DevFmtAmbi1:
1002         case DevFmtAmbi2:
1003         case DevFmtAmbi3:
1004             device->FmtChans = DevFmtStereo;
1005             /*fall-through*/
1006         case DevFmtStereo:
1007             mapname = "front-left,front-right";
1008             break;
1009         case DevFmtQuad:
1010             mapname = "front-left,front-right,rear-left,rear-right";
1011             break;
1012         case DevFmtX51:
1013             mapname = "front-left,front-right,front-center,lfe,side-left,side-right";
1014             break;
1015         case DevFmtX51Rear:
1016             mapname = "front-left,front-right,front-center,lfe,rear-left,rear-right";
1017             break;
1018         case DevFmtX61:
1019             mapname = "front-left,front-right,front-center,lfe,rear-center,side-left,side-right";
1020             break;
1021         case DevFmtX71:
1022             mapname = "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right";
1023             break;
1024     }
1025     if(!pa_channel_map_parse(&chanmap, mapname))
1026     {
1027         ERR("Failed to build channel map for %s\n", DevFmtChannelsString(device->FmtChans));
1028         pa_threaded_mainloop_unlock(self->loop);
1029         return ALC_FALSE;
1030     }
1031     SetDefaultWFXChannelOrder(device);
1032
1033     self->attr.fragsize = -1;
1034     self->attr.prebuf = 0;
1035     self->attr.minreq = device->UpdateSize * pa_frame_size(&self->spec);
1036     self->attr.tlength = self->attr.minreq * maxu(device->NumUpdates, 2);
1037     self->attr.maxlength = -1;
1038
1039     self->stream = ALCpulsePlayback_connectStream(al_string_get_cstr(self->device_name),
1040                                                   self->loop, self->context, flags,
1041                                                   &self->attr, &self->spec, &chanmap);
1042     if(!self->stream)
1043     {
1044         pa_threaded_mainloop_unlock(self->loop);
1045         return ALC_FALSE;
1046     }
1047     pa_stream_set_state_callback(self->stream, ALCpulsePlayback_streamStateCallback, self);
1048     pa_stream_set_moved_callback(self->stream, ALCpulsePlayback_streamMovedCallback, self);
1049     pa_stream_set_write_callback(self->stream, ALCpulsePlayback_streamWriteCallback, self);
1050
1051     self->spec = *(pa_stream_get_sample_spec(self->stream));
1052     if(device->Frequency != self->spec.rate)
1053     {
1054         /* Server updated our playback rate, so modify the buffer attribs
1055          * accordingly. */
1056         device->NumUpdates = (ALuint)clampd(
1057             (ALdouble)device->NumUpdates/device->Frequency*self->spec.rate + 0.5, 2.0, 16.0
1058         );
1059
1060         self->attr.minreq  = device->UpdateSize * pa_frame_size(&self->spec);
1061         self->attr.tlength = self->attr.minreq * device->NumUpdates;
1062         self->attr.maxlength = -1;
1063         self->attr.prebuf  = 0;
1064
1065         o = pa_stream_set_buffer_attr(self->stream, &self->attr,
1066                                       stream_success_callback, self->loop);
1067         wait_for_operation(o, self->loop);
1068
1069         device->Frequency = self->spec.rate;
1070     }
1071
1072     pa_stream_set_buffer_attr_callback(self->stream, ALCpulsePlayback_bufferAttrCallback, self);
1073     ALCpulsePlayback_bufferAttrCallback(self->stream, self);
1074
1075     len = self->attr.minreq / pa_frame_size(&self->spec);
1076     device->NumUpdates = (ALuint)clampd(
1077         (ALdouble)device->NumUpdates/len*device->UpdateSize + 0.5, 2.0, 16.0
1078     );
1079     device->UpdateSize = len;
1080
1081     /* HACK: prebuf should be 0 as that's what we set it to. However on some
1082      * systems it comes back as non-0, so we have to make sure the device will
1083      * write enough audio to start playback. The lack of manual start control
1084      * may have unintended consequences, but it's better than not starting at
1085      * all.
1086      */
1087     if(self->attr.prebuf != 0)
1088     {
1089         len = self->attr.prebuf / pa_frame_size(&self->spec);
1090         if(len <= device->UpdateSize*device->NumUpdates)
1091             ERR("Non-0 prebuf, %u samples (%u bytes), device has %u samples\n",
1092                 len, self->attr.prebuf, device->UpdateSize*device->NumUpdates);
1093         else
1094         {
1095             ERR("Large prebuf, %u samples (%u bytes), increasing device from %u samples",
1096                 len, self->attr.prebuf, device->UpdateSize*device->NumUpdates);
1097             device->NumUpdates = (len+device->UpdateSize-1) / device->UpdateSize;
1098         }
1099     }
1100
1101     pa_threaded_mainloop_unlock(self->loop);
1102     return ALC_TRUE;
1103 }
1104
1105 static ALCboolean ALCpulsePlayback_start(ALCpulsePlayback *self)
1106 {
1107     self->killNow = AL_FALSE;
1108     if(althrd_create(&self->thread, ALCpulsePlayback_mixerProc, self) != althrd_success)
1109         return ALC_FALSE;
1110     return ALC_TRUE;
1111 }
1112
1113 static void ALCpulsePlayback_stop(ALCpulsePlayback *self)
1114 {
1115     pa_operation *o;
1116     int res;
1117
1118     if(!self->stream || self->killNow)
1119         return;
1120
1121     self->killNow = AL_TRUE;
1122     /* Signal the main loop in case PulseAudio isn't sending us audio requests
1123      * (e.g. if the device is suspended). We need to lock the mainloop in case
1124      * the mixer is between checking the killNow flag but before waiting for
1125      * the signal.
1126      */
1127     pa_threaded_mainloop_lock(self->loop);
1128     pa_threaded_mainloop_unlock(self->loop);
1129     pa_threaded_mainloop_signal(self->loop, 0);
1130     althrd_join(self->thread, &res);
1131
1132     pa_threaded_mainloop_lock(self->loop);
1133
1134     o = pa_stream_cork(self->stream, 1, stream_success_callback, self->loop);
1135     wait_for_operation(o, self->loop);
1136
1137     pa_threaded_mainloop_unlock(self->loop);
1138 }
1139
1140
1141 static ClockLatency ALCpulsePlayback_getClockLatency(ALCpulsePlayback *self)
1142 {
1143     pa_usec_t latency = 0;
1144     ClockLatency ret;
1145     int neg, err;
1146
1147     pa_threaded_mainloop_lock(self->loop);
1148     ret.ClockTime = GetDeviceClockTime(STATIC_CAST(ALCbackend,self)->mDevice);
1149     if((err=pa_stream_get_latency(self->stream, &latency, &neg)) != 0)
1150     {
1151         /* FIXME: if err = -PA_ERR_NODATA, it means we were called too soon
1152          * after starting the stream and no timing info has been received from
1153          * the server yet. Should we wait, possibly stalling the app, or give a
1154          * dummy value? Either way, it shouldn't be 0. */
1155         if(err != -PA_ERR_NODATA)
1156             ERR("Failed to get stream latency: 0x%x\n", err);
1157         latency = 0;
1158         neg = 0;
1159     }
1160     if(neg) latency = 0;
1161     ret.Latency = minu64(latency, U64(0xffffffffffffffff)/1000) * 1000;
1162     pa_threaded_mainloop_unlock(self->loop);
1163
1164     return ret;
1165 }
1166
1167
1168 static void ALCpulsePlayback_lock(ALCpulsePlayback *self)
1169 {
1170     pa_threaded_mainloop_lock(self->loop);
1171 }
1172
1173 static void ALCpulsePlayback_unlock(ALCpulsePlayback *self)
1174 {
1175     pa_threaded_mainloop_unlock(self->loop);
1176 }
1177
1178
1179 typedef struct ALCpulseCapture {
1180     DERIVE_FROM_TYPE(ALCbackend);
1181
1182     al_string device_name;
1183
1184     const void *cap_store;
1185     size_t cap_len;
1186     size_t cap_remain;
1187
1188     ALCuint last_readable;
1189
1190     pa_buffer_attr attr;
1191     pa_sample_spec spec;
1192
1193     pa_threaded_mainloop *loop;
1194
1195     pa_stream *stream;
1196     pa_context *context;
1197 } ALCpulseCapture;
1198
1199 static void ALCpulseCapture_deviceCallback(pa_context *context, const pa_source_info *info, int eol, void *pdata);
1200 static void ALCpulseCapture_probeDevices(void);
1201
1202 static void ALCpulseCapture_contextStateCallback(pa_context *context, void *pdata);
1203 static void ALCpulseCapture_streamStateCallback(pa_stream *stream, void *pdata);
1204 static void ALCpulseCapture_sourceNameCallback(pa_context *context, const pa_source_info *info, int eol, void *pdata);
1205 static void ALCpulseCapture_streamMovedCallback(pa_stream *stream, void *pdata);
1206 static pa_stream *ALCpulseCapture_connectStream(const char *device_name,
1207                                                 pa_threaded_mainloop *loop, pa_context *context,
1208                                                 pa_stream_flags_t flags, pa_buffer_attr *attr,
1209                                                 pa_sample_spec *spec, pa_channel_map *chanmap);
1210
1211 static void ALCpulseCapture_Construct(ALCpulseCapture *self, ALCdevice *device);
1212 static void ALCpulseCapture_Destruct(ALCpulseCapture *self);
1213 static ALCenum ALCpulseCapture_open(ALCpulseCapture *self, const ALCchar *name);
1214 static void ALCpulseCapture_close(ALCpulseCapture *self);
1215 static DECLARE_FORWARD(ALCpulseCapture, ALCbackend, ALCboolean, reset)
1216 static ALCboolean ALCpulseCapture_start(ALCpulseCapture *self);
1217 static void ALCpulseCapture_stop(ALCpulseCapture *self);
1218 static ALCenum ALCpulseCapture_captureSamples(ALCpulseCapture *self, ALCvoid *buffer, ALCuint samples);
1219 static ALCuint ALCpulseCapture_availableSamples(ALCpulseCapture *self);
1220 static ClockLatency ALCpulseCapture_getClockLatency(ALCpulseCapture *self);
1221 static void ALCpulseCapture_lock(ALCpulseCapture *self);
1222 static void ALCpulseCapture_unlock(ALCpulseCapture *self);
1223 DECLARE_DEFAULT_ALLOCATORS(ALCpulseCapture)
1224
1225 DEFINE_ALCBACKEND_VTABLE(ALCpulseCapture);
1226
1227
1228 static void ALCpulseCapture_Construct(ALCpulseCapture *self, ALCdevice *device)
1229 {
1230     ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
1231     SET_VTABLE2(ALCpulseCapture, ALCbackend, self);
1232
1233     AL_STRING_INIT(self->device_name);
1234 }
1235
1236 static void ALCpulseCapture_Destruct(ALCpulseCapture *self)
1237 {
1238     AL_STRING_DEINIT(self->device_name);
1239     ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
1240 }
1241
1242
1243 static void ALCpulseCapture_deviceCallback(pa_context *UNUSED(context), const pa_source_info *info, int eol, void *pdata)
1244 {
1245     pa_threaded_mainloop *loop = pdata;
1246     const DevMap *iter;
1247     DevMap entry;
1248     int count;
1249
1250     if(eol)
1251     {
1252         pa_threaded_mainloop_signal(loop, 0);
1253         return;
1254     }
1255
1256 #define MATCH_INFO_NAME(iter) (al_string_cmp_cstr((iter)->device_name, info->name) == 0)
1257     VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_INFO_NAME);
1258     if(iter != VECTOR_END(CaptureDevices)) return;
1259 #undef MATCH_INFO_NAME
1260
1261     AL_STRING_INIT(entry.name);
1262     AL_STRING_INIT(entry.device_name);
1263
1264     al_string_copy_cstr(&entry.device_name, info->name);
1265
1266     count = 0;
1267     while(1)
1268     {
1269         al_string_copy_cstr(&entry.name, info->description);
1270         if(count != 0)
1271         {
1272             char str[64];
1273             snprintf(str, sizeof(str), " #%d", count+1);
1274             al_string_append_cstr(&entry.name, str);
1275         }
1276
1277 #define MATCH_ENTRY(i) (al_string_cmp(entry.name, (i)->name) == 0)
1278         VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_ENTRY);
1279         if(iter == VECTOR_END(CaptureDevices)) break;
1280 #undef MATCH_ENTRY
1281         count++;
1282     }
1283
1284     TRACE("Got device \"%s\", \"%s\"\n", al_string_get_cstr(entry.name), al_string_get_cstr(entry.device_name));
1285
1286     VECTOR_PUSH_BACK(CaptureDevices, entry);
1287 }
1288
1289 static void ALCpulseCapture_probeDevices(void)
1290 {
1291     pa_threaded_mainloop *loop;
1292
1293     clear_devlist(&CaptureDevices);
1294
1295     if((loop=pa_threaded_mainloop_new()) &&
1296        pa_threaded_mainloop_start(loop) >= 0)
1297     {
1298         pa_context *context;
1299
1300         pa_threaded_mainloop_lock(loop);
1301         context = connect_context(loop, AL_FALSE);
1302         if(context)
1303         {
1304             pa_operation *o;
1305             pa_stream_flags_t flags;
1306             pa_sample_spec spec;
1307             pa_stream *stream;
1308
1309             flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
1310                     PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
1311
1312             spec.format = PA_SAMPLE_S16NE;
1313             spec.rate = 44100;
1314             spec.channels = 1;
1315
1316             stream = ALCpulseCapture_connectStream(NULL, loop, context, flags,
1317                                                    NULL, &spec, NULL);
1318             if(stream)
1319             {
1320                 o = pa_context_get_source_info_by_name(context, pa_stream_get_device_name(stream),
1321                                                        ALCpulseCapture_deviceCallback, loop);
1322                 wait_for_operation(o, loop);
1323
1324                 pa_stream_disconnect(stream);
1325                 pa_stream_unref(stream);
1326                 stream = NULL;
1327             }
1328
1329             o = pa_context_get_source_info_list(context, ALCpulseCapture_deviceCallback, loop);
1330             wait_for_operation(o, loop);
1331
1332             pa_context_disconnect(context);
1333             pa_context_unref(context);
1334         }
1335         pa_threaded_mainloop_unlock(loop);
1336         pa_threaded_mainloop_stop(loop);
1337     }
1338     if(loop)
1339         pa_threaded_mainloop_free(loop);
1340 }
1341
1342
1343 static void ALCpulseCapture_contextStateCallback(pa_context *context, void *pdata)
1344 {
1345     ALCpulseCapture *self = pdata;
1346     if(pa_context_get_state(context) == PA_CONTEXT_FAILED)
1347     {
1348         ERR("Received context failure!\n");
1349         aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice);
1350     }
1351     pa_threaded_mainloop_signal(self->loop, 0);
1352 }
1353
1354 static void ALCpulseCapture_streamStateCallback(pa_stream *stream, void *pdata)
1355 {
1356     ALCpulseCapture *self = pdata;
1357     if(pa_stream_get_state(stream) == PA_STREAM_FAILED)
1358     {
1359         ERR("Received stream failure!\n");
1360         aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice);
1361     }
1362     pa_threaded_mainloop_signal(self->loop, 0);
1363 }
1364
1365
1366 static void ALCpulseCapture_sourceNameCallback(pa_context *UNUSED(context), const pa_source_info *info, int eol, void *pdata)
1367 {
1368     ALCpulseCapture *self = pdata;
1369     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1370
1371     if(eol)
1372     {
1373         pa_threaded_mainloop_signal(self->loop, 0);
1374         return;
1375     }
1376
1377     al_string_copy_cstr(&device->DeviceName, info->description);
1378 }
1379
1380
1381 static void ALCpulseCapture_streamMovedCallback(pa_stream *stream, void *pdata)
1382 {
1383     ALCpulseCapture *self = pdata;
1384
1385     al_string_copy_cstr(&self->device_name, pa_stream_get_device_name(stream));
1386
1387     TRACE("Stream moved to %s\n", al_string_get_cstr(self->device_name));
1388 }
1389
1390
1391 static pa_stream *ALCpulseCapture_connectStream(const char *device_name,
1392     pa_threaded_mainloop *loop, pa_context *context,
1393     pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,
1394     pa_channel_map *chanmap)
1395 {
1396     pa_stream_state_t state;
1397     pa_stream *stream;
1398
1399     stream = pa_stream_new_with_proplist(context, "Capture Stream", spec, chanmap, prop_filter);
1400     if(!stream)
1401     {
1402         ERR("pa_stream_new_with_proplist() failed: %s\n", pa_strerror(pa_context_errno(context)));
1403         return NULL;
1404     }
1405
1406     pa_stream_set_state_callback(stream, stream_state_callback, loop);
1407
1408     if(pa_stream_connect_record(stream, device_name, attr, flags) < 0)
1409     {
1410         ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));
1411         pa_stream_unref(stream);
1412         return NULL;
1413     }
1414
1415     while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)
1416     {
1417         if(!PA_STREAM_IS_GOOD(state))
1418         {
1419             ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));
1420             pa_stream_unref(stream);
1421             return NULL;
1422         }
1423
1424         pa_threaded_mainloop_wait(loop);
1425     }
1426     pa_stream_set_state_callback(stream, NULL, NULL);
1427
1428     return stream;
1429 }
1430
1431
1432 static ALCenum ALCpulseCapture_open(ALCpulseCapture *self, const ALCchar *name)
1433 {
1434     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1435     const char *pulse_name = NULL;
1436     pa_stream_flags_t flags = 0;
1437     pa_channel_map chanmap;
1438     ALuint samples;
1439
1440     if(name)
1441     {
1442         const DevMap *iter;
1443
1444         if(VECTOR_SIZE(CaptureDevices) == 0)
1445             ALCpulseCapture_probeDevices();
1446
1447 #define MATCH_NAME(iter) (al_string_cmp_cstr((iter)->name, name) == 0)
1448         VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_NAME);
1449 #undef MATCH_NAME
1450         if(iter == VECTOR_END(CaptureDevices))
1451             return ALC_INVALID_VALUE;
1452         pulse_name = al_string_get_cstr(iter->device_name);
1453         al_string_copy(&device->DeviceName, iter->name);
1454     }
1455
1456     if(!pulse_open(&self->loop, &self->context, ALCpulseCapture_contextStateCallback, self))
1457         return ALC_INVALID_VALUE;
1458
1459     pa_threaded_mainloop_lock(self->loop);
1460
1461     self->spec.rate = device->Frequency;
1462     self->spec.channels = ChannelsFromDevFmt(device->FmtChans);
1463
1464     switch(device->FmtType)
1465     {
1466         case DevFmtUByte:
1467             self->spec.format = PA_SAMPLE_U8;
1468             break;
1469         case DevFmtShort:
1470             self->spec.format = PA_SAMPLE_S16NE;
1471             break;
1472         case DevFmtInt:
1473             self->spec.format = PA_SAMPLE_S32NE;
1474             break;
1475         case DevFmtFloat:
1476             self->spec.format = PA_SAMPLE_FLOAT32NE;
1477             break;
1478         case DevFmtByte:
1479         case DevFmtUShort:
1480         case DevFmtUInt:
1481             ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));
1482             pa_threaded_mainloop_unlock(self->loop);
1483             goto fail;
1484     }
1485
1486     if(pa_sample_spec_valid(&self->spec) == 0)
1487     {
1488         ERR("Invalid sample format\n");
1489         pa_threaded_mainloop_unlock(self->loop);
1490         goto fail;
1491     }
1492
1493     if(!pa_channel_map_init_auto(&chanmap, self->spec.channels, PA_CHANNEL_MAP_WAVEEX))
1494     {
1495         ERR("Couldn't build map for channel count (%d)!\n", self->spec.channels);
1496         pa_threaded_mainloop_unlock(self->loop);
1497         goto fail;
1498     }
1499
1500     samples = device->UpdateSize * device->NumUpdates;
1501     samples = maxu(samples, 100 * device->Frequency / 1000);
1502
1503     self->attr.minreq = -1;
1504     self->attr.prebuf = -1;
1505     self->attr.maxlength = samples * pa_frame_size(&self->spec);
1506     self->attr.tlength = -1;
1507     self->attr.fragsize = minu(samples, 50*device->Frequency/1000) *
1508                           pa_frame_size(&self->spec);
1509
1510     flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
1511     if(!GetConfigValueBool(NULL, "pulse", "allow-moves", 0))
1512         flags |= PA_STREAM_DONT_MOVE;
1513
1514     TRACE("Connecting to \"%s\"\n", pulse_name ? pulse_name : "(default)");
1515     self->stream = ALCpulseCapture_connectStream(pulse_name, self->loop, self->context,
1516                                                  flags, &self->attr, &self->spec,
1517                                                  &chanmap);
1518     if(!self->stream)
1519     {
1520         pa_threaded_mainloop_unlock(self->loop);
1521         goto fail;
1522     }
1523     pa_stream_set_moved_callback(self->stream, ALCpulseCapture_streamMovedCallback, self);
1524     pa_stream_set_state_callback(self->stream, ALCpulseCapture_streamStateCallback, self);
1525
1526     al_string_copy_cstr(&self->device_name, pa_stream_get_device_name(self->stream));
1527     if(al_string_empty(device->DeviceName))
1528     {
1529         pa_operation *o = pa_context_get_source_info_by_name(
1530             self->context, al_string_get_cstr(self->device_name),
1531             ALCpulseCapture_sourceNameCallback, self
1532         );
1533         wait_for_operation(o, self->loop);
1534     }
1535
1536     pa_threaded_mainloop_unlock(self->loop);
1537     return ALC_NO_ERROR;
1538
1539 fail:
1540     pulse_close(self->loop, self->context, self->stream);
1541     self->loop = NULL;
1542     self->context = NULL;
1543     self->stream = NULL;
1544
1545     return ALC_INVALID_VALUE;
1546 }
1547
1548 static void ALCpulseCapture_close(ALCpulseCapture *self)
1549 {
1550     pulse_close(self->loop, self->context, self->stream);
1551     self->loop = NULL;
1552     self->context = NULL;
1553     self->stream = NULL;
1554
1555     al_string_clear(&self->device_name);
1556 }
1557
1558 static ALCboolean ALCpulseCapture_start(ALCpulseCapture *self)
1559 {
1560     pa_operation *o;
1561     o = pa_stream_cork(self->stream, 0, stream_success_callback, self->loop);
1562     wait_for_operation(o, self->loop);
1563
1564     return ALC_TRUE;
1565 }
1566
1567 static void ALCpulseCapture_stop(ALCpulseCapture *self)
1568 {
1569     pa_operation *o;
1570     o = pa_stream_cork(self->stream, 1, stream_success_callback, self->loop);
1571     wait_for_operation(o, self->loop);
1572 }
1573
1574 static ALCenum ALCpulseCapture_captureSamples(ALCpulseCapture *self, ALCvoid *buffer, ALCuint samples)
1575 {
1576     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1577     ALCuint todo = samples * pa_frame_size(&self->spec);
1578
1579     /* Capture is done in fragment-sized chunks, so we loop until we get all
1580      * that's available */
1581     self->last_readable -= todo;
1582     while(todo > 0)
1583     {
1584         size_t rem = todo;
1585
1586         if(self->cap_len == 0)
1587         {
1588             pa_stream_state_t state;
1589
1590             state = pa_stream_get_state(self->stream);
1591             if(!PA_STREAM_IS_GOOD(state))
1592             {
1593                 aluHandleDisconnect(device);
1594                 break;
1595             }
1596             if(pa_stream_peek(self->stream, &self->cap_store, &self->cap_len) < 0)
1597             {
1598                 ERR("pa_stream_peek() failed: %s\n",
1599                     pa_strerror(pa_context_errno(self->context)));
1600                 aluHandleDisconnect(device);
1601                 break;
1602             }
1603             self->cap_remain = self->cap_len;
1604         }
1605         if(rem > self->cap_remain)
1606             rem = self->cap_remain;
1607
1608         memcpy(buffer, self->cap_store, rem);
1609
1610         buffer = (ALbyte*)buffer + rem;
1611         todo -= rem;
1612
1613         self->cap_store = (ALbyte*)self->cap_store + rem;
1614         self->cap_remain -= rem;
1615         if(self->cap_remain == 0)
1616         {
1617             pa_stream_drop(self->stream);
1618             self->cap_len = 0;
1619         }
1620     }
1621     if(todo > 0)
1622         memset(buffer, ((device->FmtType==DevFmtUByte) ? 0x80 : 0), todo);
1623
1624     return ALC_NO_ERROR;
1625 }
1626
1627 static ALCuint ALCpulseCapture_availableSamples(ALCpulseCapture *self)
1628 {
1629     ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;
1630     size_t readable = self->cap_remain;
1631
1632     if(device->Connected)
1633     {
1634         ssize_t got = pa_stream_readable_size(self->stream);
1635         if(got < 0)
1636         {
1637             ERR("pa_stream_readable_size() failed: %s\n", pa_strerror(got));
1638             aluHandleDisconnect(device);
1639         }
1640         else if((size_t)got > self->cap_len)
1641             readable += got - self->cap_len;
1642     }
1643
1644     if(self->last_readable < readable)
1645         self->last_readable = readable;
1646     return self->last_readable / pa_frame_size(&self->spec);
1647 }
1648
1649
1650 static ClockLatency ALCpulseCapture_getClockLatency(ALCpulseCapture *self)
1651 {
1652     pa_usec_t latency = 0;
1653     ClockLatency ret;
1654     int neg, err;
1655
1656     pa_threaded_mainloop_lock(self->loop);
1657     ret.ClockTime = GetDeviceClockTime(STATIC_CAST(ALCbackend,self)->mDevice);
1658     if((err=pa_stream_get_latency(self->stream, &latency, &neg)) != 0)
1659     {
1660         ERR("Failed to get stream latency: 0x%x\n", err);
1661         latency = 0;
1662         neg = 0;
1663     }
1664     if(neg) latency = 0;
1665     ret.Latency = minu64(latency, U64(0xffffffffffffffff)/1000) * 1000;
1666     pa_threaded_mainloop_unlock(self->loop);
1667
1668     return ret;
1669 }
1670
1671
1672 static void ALCpulseCapture_lock(ALCpulseCapture *self)
1673 {
1674     pa_threaded_mainloop_lock(self->loop);
1675 }
1676
1677 static void ALCpulseCapture_unlock(ALCpulseCapture *self)
1678 {
1679     pa_threaded_mainloop_unlock(self->loop);
1680 }
1681
1682
1683 typedef struct ALCpulseBackendFactory {
1684     DERIVE_FROM_TYPE(ALCbackendFactory);
1685 } ALCpulseBackendFactory;
1686 #define ALCPULSEBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCpulseBackendFactory, ALCbackendFactory) } }
1687
1688 static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory *self);
1689 static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory *self);
1690 static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory *self, ALCbackend_Type type);
1691 static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory *self, enum DevProbe type);
1692 static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory *self, ALCdevice *device, ALCbackend_Type type);
1693
1694 DEFINE_ALCBACKENDFACTORY_VTABLE(ALCpulseBackendFactory);
1695
1696
1697 static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory* UNUSED(self))
1698 {
1699     ALCboolean ret = ALC_FALSE;
1700
1701     VECTOR_INIT(PlaybackDevices);
1702     VECTOR_INIT(CaptureDevices);
1703
1704     if(pulse_load())
1705     {
1706         pa_threaded_mainloop *loop;
1707
1708         pulse_ctx_flags = 0;
1709         if(!GetConfigValueBool(NULL, "pulse", "spawn-server", 1))
1710             pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
1711
1712         if((loop=pa_threaded_mainloop_new()) &&
1713            pa_threaded_mainloop_start(loop) >= 0)
1714         {
1715             pa_context *context;
1716
1717             pa_threaded_mainloop_lock(loop);
1718             context = connect_context(loop, AL_TRUE);
1719             if(context)
1720             {
1721                 ret = ALC_TRUE;
1722
1723                 /* Some libraries (Phonon, Qt) set some pulseaudio properties
1724                  * through environment variables, which causes all streams in
1725                  * the process to inherit them. This attempts to filter those
1726                  * properties out by setting them to 0-length data. */
1727                 prop_filter = pa_proplist_new();
1728                 pa_proplist_set(prop_filter, PA_PROP_MEDIA_ROLE, NULL, 0);
1729                 pa_proplist_set(prop_filter, "phonon.streamid", NULL, 0);
1730
1731                 pa_context_disconnect(context);
1732                 pa_context_unref(context);
1733             }
1734             pa_threaded_mainloop_unlock(loop);
1735             pa_threaded_mainloop_stop(loop);
1736         }
1737         if(loop)
1738             pa_threaded_mainloop_free(loop);
1739     }
1740
1741     return ret;
1742 }
1743
1744 static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory* UNUSED(self))
1745 {
1746     clear_devlist(&PlaybackDevices);
1747     VECTOR_DEINIT(PlaybackDevices);
1748
1749     clear_devlist(&CaptureDevices);
1750     VECTOR_DEINIT(CaptureDevices);
1751
1752     if(prop_filter)
1753         pa_proplist_free(prop_filter);
1754     prop_filter = NULL;
1755
1756     /* PulseAudio doesn't like being CloseLib'd sometimes */
1757 }
1758
1759 static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory* UNUSED(self), ALCbackend_Type type)
1760 {
1761     if(type == ALCbackend_Playback || type == ALCbackend_Capture)
1762         return ALC_TRUE;
1763     return ALC_FALSE;
1764 }
1765
1766 static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory* UNUSED(self), enum DevProbe type)
1767 {
1768     switch(type)
1769     {
1770         case ALL_DEVICE_PROBE:
1771             ALCpulsePlayback_probeDevices();
1772 #define APPEND_ALL_DEVICES_LIST(e)  AppendAllDevicesList(al_string_get_cstr((e)->name))
1773             VECTOR_FOR_EACH(const DevMap, PlaybackDevices, APPEND_ALL_DEVICES_LIST);
1774 #undef APPEND_ALL_DEVICES_LIST
1775             break;
1776
1777         case CAPTURE_DEVICE_PROBE:
1778             ALCpulseCapture_probeDevices();
1779 #define APPEND_CAPTURE_DEVICE_LIST(e) AppendCaptureDeviceList(al_string_get_cstr((e)->name))
1780             VECTOR_FOR_EACH(const DevMap, CaptureDevices, APPEND_CAPTURE_DEVICE_LIST);
1781 #undef APPEND_CAPTURE_DEVICE_LIST
1782             break;
1783     }
1784 }
1785
1786 static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type)
1787 {
1788     if(type == ALCbackend_Playback)
1789     {
1790         ALCpulsePlayback *backend;
1791         NEW_OBJ(backend, ALCpulsePlayback)(device);
1792         if(!backend) return NULL;
1793         return STATIC_CAST(ALCbackend, backend);
1794     }
1795     if(type == ALCbackend_Capture)
1796     {
1797         ALCpulseCapture *backend;
1798         NEW_OBJ(backend, ALCpulseCapture)(device);
1799         if(!backend) return NULL;
1800         return STATIC_CAST(ALCbackend, backend);
1801     }
1802
1803     return NULL;
1804 }
1805
1806
1807 #else /* PA_API_VERSION == 12 */
1808
1809 #warning "Unsupported API version, backend will be unavailable!"
1810
1811 typedef struct ALCpulseBackendFactory {
1812     DERIVE_FROM_TYPE(ALCbackendFactory);
1813 } ALCpulseBackendFactory;
1814 #define ALCPULSEBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCpulseBackendFactory, ALCbackendFactory) } }
1815
1816 static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory* UNUSED(self))
1817 {
1818     return ALC_FALSE;
1819 }
1820
1821 static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory* UNUSED(self))
1822 {
1823 }
1824
1825 static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory* UNUSED(self), ALCbackend_Type UNUSED(type))
1826 {
1827     return ALC_FALSE;
1828 }
1829
1830 static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory* UNUSED(self), enum DevProbe UNUSED(type))
1831 {
1832 }
1833
1834 static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory* UNUSED(self), ALCdevice* UNUSED(device), ALCbackend_Type UNUSED(type))
1835 {
1836     return NULL;
1837 }
1838
1839 DEFINE_ALCBACKENDFACTORY_VTABLE(ALCpulseBackendFactory);
1840
1841 #endif /* PA_API_VERSION == 12 */
1842
1843 ALCbackendFactory *ALCpulseBackendFactory_getFactory(void)
1844 {
1845     static ALCpulseBackendFactory factory = ALCPULSEBACKENDFACTORY_INITIALIZER;
1846     return STATIC_CAST(ALCbackendFactory, &factory);
1847 }