| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Stéphan Kochen |
| 20 | stephan@kochen.nl |
| 21 | |
| 22 | Based on parts of the ALSA and ESounD output drivers. |
| 23 | */ |
| 24 | #include "SDL_config.h" |
| 25 | |
| 26 | /* Allow access to an PulseAudio network stream mixing buffer */ |
| 27 | |
| 28 | #include <sys/types.h> |
| 29 | #include <unistd.h> |
| 30 | #include <signal.h> |
| 31 | #include <errno.h> |
| 32 | #include <pulse/pulseaudio.h> |
| 33 | #include <pulse/simple.h> |
| 34 | |
| 35 | #include "SDL_timer.h" |
| 36 | #include "SDL_audio.h" |
| 37 | #include "../SDL_audiomem.h" |
| 38 | #include "../SDL_audio_c.h" |
| 39 | #include "../SDL_audiodev_c.h" |
| 40 | #include "SDL_pulseaudio.h" |
| 41 | |
| 42 | #ifdef SDL_AUDIO_DRIVER_PULSE_DYNAMIC |
| 43 | #include "SDL_name.h" |
| 44 | #include "SDL_loadso.h" |
| 45 | #else |
| 46 | #define SDL_NAME(X) X |
| 47 | #endif |
| 48 | |
| 49 | /* The tag name used by the driver */ |
| 50 | #define PULSE_DRIVER_NAME "pulse" |
| 51 | |
| 52 | /* Audio driver functions */ |
| 53 | static int PULSE_OpenAudio(_THIS, SDL_AudioSpec *spec); |
| 54 | static void PULSE_WaitAudio(_THIS); |
| 55 | static void PULSE_PlayAudio(_THIS); |
| 56 | static Uint8 *PULSE_GetAudioBuf(_THIS); |
| 57 | static void PULSE_CloseAudio(_THIS); |
| 58 | static void PULSE_WaitDone(_THIS); |
| 59 | |
| 60 | #ifdef SDL_AUDIO_DRIVER_PULSE_DYNAMIC |
| 61 | |
| 62 | static const char *pulse_library = SDL_AUDIO_DRIVER_PULSE_DYNAMIC; |
| 63 | static void *pulse_handle = NULL; |
| 64 | static int pulse_loaded = 0; |
| 65 | |
| 66 | static pa_simple* (*SDL_NAME(pa_simple_new))( |
| 67 | const char *server, |
| 68 | const char *name, |
| 69 | pa_stream_direction_t dir, |
| 70 | const char *dev, |
| 71 | const char *stream_name, |
| 72 | const pa_sample_spec *ss, |
| 73 | const pa_channel_map *map, |
| 74 | const pa_buffer_attr *attr, |
| 75 | int *error |
| 76 | ); |
| 77 | static void (*SDL_NAME(pa_simple_free))(pa_simple *s); |
| 78 | |
| 79 | static pa_channel_map* (*SDL_NAME(pa_channel_map_init_auto))( |
| 80 | pa_channel_map *m, |
| 81 | unsigned channels, |
| 82 | pa_channel_map_def_t def |
| 83 | ); |
| 84 | |
| 85 | pa_mainloop * (*SDL_NAME(pa_mainloop_new))(void); |
| 86 | pa_mainloop_api * (*SDL_NAME(pa_mainloop_get_api))(pa_mainloop *m); |
| 87 | int (*SDL_NAME(pa_mainloop_iterate))(pa_mainloop *m, int block, int *retval); |
| 88 | void (*SDL_NAME(pa_mainloop_free))(pa_mainloop *m); |
| 89 | |
| 90 | pa_operation_state_t (*SDL_NAME(pa_operation_get_state))(pa_operation *o); |
| 91 | void (*SDL_NAME(pa_operation_cancel))(pa_operation *o); |
| 92 | void (*SDL_NAME(pa_operation_unref))(pa_operation *o); |
| 93 | |
| 94 | pa_context * (*SDL_NAME(pa_context_new))( |
| 95 | pa_mainloop_api *m, const char *name); |
| 96 | int (*SDL_NAME(pa_context_connect))( |
| 97 | pa_context *c, const char *server, |
| 98 | pa_context_flags_t flags, const pa_spawn_api *api); |
| 99 | pa_context_state_t (*SDL_NAME(pa_context_get_state))(pa_context *c); |
| 100 | void (*SDL_NAME(pa_context_disconnect))(pa_context *c); |
| 101 | void (*SDL_NAME(pa_context_unref))(pa_context *c); |
| 102 | |
| 103 | pa_stream * (*SDL_NAME(pa_stream_new))(pa_context *c, |
| 104 | const char *name, const pa_sample_spec *ss, const pa_channel_map *map); |
| 105 | int (*SDL_NAME(pa_stream_connect_playback))(pa_stream *s, const char *dev, |
| 106 | const pa_buffer_attr *attr, pa_stream_flags_t flags, |
| 107 | pa_cvolume *volume, pa_stream *sync_stream); |
| 108 | pa_stream_state_t (*SDL_NAME(pa_stream_get_state))(pa_stream *s); |
| 109 | size_t (*SDL_NAME(pa_stream_writable_size))(pa_stream *s); |
| 110 | int (*SDL_NAME(pa_stream_write))(pa_stream *s, const void *data, size_t nbytes, |
| 111 | pa_free_cb_t free_cb, int64_t offset, pa_seek_mode_t seek); |
| 112 | pa_operation * (*SDL_NAME(pa_stream_drain))(pa_stream *s, |
| 113 | pa_stream_success_cb_t cb, void *userdata); |
| 114 | int (*SDL_NAME(pa_stream_disconnect))(pa_stream *s); |
| 115 | void (*SDL_NAME(pa_stream_unref))(pa_stream *s); |
| 116 | |
| 117 | static struct { |
| 118 | const char *name; |
| 119 | void **func; |
| 120 | } pulse_functions[] = { |
| 121 | { "pa_simple_new", |
| 122 | (void **)&SDL_NAME(pa_simple_new) }, |
| 123 | { "pa_simple_free", |
| 124 | (void **)&SDL_NAME(pa_simple_free) }, |
| 125 | { "pa_channel_map_init_auto", |
| 126 | (void **)&SDL_NAME(pa_channel_map_init_auto) }, |
| 127 | { "pa_mainloop_new", |
| 128 | (void **)&SDL_NAME(pa_mainloop_new) }, |
| 129 | { "pa_mainloop_get_api", |
| 130 | (void **)&SDL_NAME(pa_mainloop_get_api) }, |
| 131 | { "pa_mainloop_iterate", |
| 132 | (void **)&SDL_NAME(pa_mainloop_iterate) }, |
| 133 | { "pa_mainloop_free", |
| 134 | (void **)&SDL_NAME(pa_mainloop_free) }, |
| 135 | { "pa_operation_get_state", |
| 136 | (void **)&SDL_NAME(pa_operation_get_state) }, |
| 137 | { "pa_operation_cancel", |
| 138 | (void **)&SDL_NAME(pa_operation_cancel) }, |
| 139 | { "pa_operation_unref", |
| 140 | (void **)&SDL_NAME(pa_operation_unref) }, |
| 141 | { "pa_context_new", |
| 142 | (void **)&SDL_NAME(pa_context_new) }, |
| 143 | { "pa_context_connect", |
| 144 | (void **)&SDL_NAME(pa_context_connect) }, |
| 145 | { "pa_context_get_state", |
| 146 | (void **)&SDL_NAME(pa_context_get_state) }, |
| 147 | { "pa_context_disconnect", |
| 148 | (void **)&SDL_NAME(pa_context_disconnect) }, |
| 149 | { "pa_context_unref", |
| 150 | (void **)&SDL_NAME(pa_context_unref) }, |
| 151 | { "pa_stream_new", |
| 152 | (void **)&SDL_NAME(pa_stream_new) }, |
| 153 | { "pa_stream_connect_playback", |
| 154 | (void **)&SDL_NAME(pa_stream_connect_playback) }, |
| 155 | { "pa_stream_get_state", |
| 156 | (void **)&SDL_NAME(pa_stream_get_state) }, |
| 157 | { "pa_stream_writable_size", |
| 158 | (void **)&SDL_NAME(pa_stream_writable_size) }, |
| 159 | { "pa_stream_write", |
| 160 | (void **)&SDL_NAME(pa_stream_write) }, |
| 161 | { "pa_stream_drain", |
| 162 | (void **)&SDL_NAME(pa_stream_drain) }, |
| 163 | { "pa_stream_disconnect", |
| 164 | (void **)&SDL_NAME(pa_stream_disconnect) }, |
| 165 | { "pa_stream_unref", |
| 166 | (void **)&SDL_NAME(pa_stream_unref) }, |
| 167 | }; |
| 168 | |
| 169 | static void UnloadPulseLibrary() |
| 170 | { |
| 171 | if ( pulse_loaded ) { |
| 172 | SDL_UnloadObject(pulse_handle); |
| 173 | pulse_handle = NULL; |
| 174 | pulse_loaded = 0; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | static int LoadPulseLibrary(void) |
| 179 | { |
| 180 | int i, retval = -1; |
| 181 | |
| 182 | pulse_handle = SDL_LoadObject(pulse_library); |
| 183 | if ( pulse_handle ) { |
| 184 | pulse_loaded = 1; |
| 185 | retval = 0; |
| 186 | for ( i=0; i<SDL_arraysize(pulse_functions); ++i ) { |
| 187 | *pulse_functions[i].func = SDL_LoadFunction(pulse_handle, pulse_functions[i].name); |
| 188 | if ( !*pulse_functions[i].func ) { |
| 189 | retval = -1; |
| 190 | UnloadPulseLibrary(); |
| 191 | break; |
| 192 | } |
| 193 | } |
| 194 | } |
| 195 | return retval; |
| 196 | } |
| 197 | |
| 198 | #else |
| 199 | |
| 200 | static void UnloadPulseLibrary() |
| 201 | { |
| 202 | return; |
| 203 | } |
| 204 | |
| 205 | static int LoadPulseLibrary(void) |
| 206 | { |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | #endif /* SDL_AUDIO_DRIVER_PULSE_DYNAMIC */ |
| 211 | |
| 212 | /* Audio driver bootstrap functions */ |
| 213 | |
| 214 | static int Audio_Available(void) |
| 215 | { |
| 216 | pa_sample_spec paspec; |
| 217 | pa_simple *connection; |
| 218 | int available; |
| 219 | |
| 220 | available = 0; |
| 221 | if ( LoadPulseLibrary() < 0 ) { |
| 222 | return available; |
| 223 | } |
| 224 | |
| 225 | /* Connect with a dummy format. */ |
| 226 | paspec.format = PA_SAMPLE_U8; |
| 227 | paspec.rate = 11025; |
| 228 | paspec.channels = 1; |
| 229 | connection = SDL_NAME(pa_simple_new)( |
| 230 | NULL, /* server */ |
| 231 | "Test stream", /* application name */ |
| 232 | PA_STREAM_PLAYBACK, /* playback mode */ |
| 233 | NULL, /* device on the server */ |
| 234 | "Simple DirectMedia Layer", /* stream description */ |
| 235 | &paspec, /* sample format spec */ |
| 236 | NULL, /* channel map */ |
| 237 | NULL, /* buffering attributes */ |
| 238 | NULL /* error code */ |
| 239 | ); |
| 240 | if ( connection != NULL ) { |
| 241 | available = 1; |
| 242 | SDL_NAME(pa_simple_free)(connection); |
| 243 | } |
| 244 | |
| 245 | UnloadPulseLibrary(); |
| 246 | return(available); |
| 247 | } |
| 248 | |
| 249 | static void Audio_DeleteDevice(SDL_AudioDevice *device) |
| 250 | { |
| 251 | SDL_free(device->hidden); |
| 252 | SDL_free(device); |
| 253 | UnloadPulseLibrary(); |
| 254 | } |
| 255 | |
| 256 | static SDL_AudioDevice *Audio_CreateDevice(int devindex) |
| 257 | { |
| 258 | SDL_AudioDevice *this; |
| 259 | |
| 260 | /* Initialize all variables that we clean on shutdown */ |
| 261 | LoadPulseLibrary(); |
| 262 | this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); |
| 263 | if ( this ) { |
| 264 | SDL_memset(this, 0, (sizeof *this)); |
| 265 | this->hidden = (struct SDL_PrivateAudioData *) |
| 266 | SDL_malloc((sizeof *this->hidden)); |
| 267 | } |
| 268 | if ( (this == NULL) || (this->hidden == NULL) ) { |
| 269 | SDL_OutOfMemory(); |
| 270 | if ( this ) { |
| 271 | SDL_free(this); |
| 272 | } |
| 273 | return(0); |
| 274 | } |
| 275 | SDL_memset(this->hidden, 0, (sizeof *this->hidden)); |
| 276 | |
| 277 | /* Set the function pointers */ |
| 278 | this->OpenAudio = PULSE_OpenAudio; |
| 279 | this->WaitAudio = PULSE_WaitAudio; |
| 280 | this->PlayAudio = PULSE_PlayAudio; |
| 281 | this->GetAudioBuf = PULSE_GetAudioBuf; |
| 282 | this->CloseAudio = PULSE_CloseAudio; |
| 283 | this->WaitDone = PULSE_WaitDone; |
| 284 | |
| 285 | this->free = Audio_DeleteDevice; |
| 286 | |
| 287 | return this; |
| 288 | } |
| 289 | |
| 290 | AudioBootStrap PULSE_bootstrap = { |
| 291 | PULSE_DRIVER_NAME, "PulseAudio", |
| 292 | Audio_Available, Audio_CreateDevice |
| 293 | }; |
| 294 | |
| 295 | /* This function waits until it is possible to write a full sound buffer */ |
| 296 | static void PULSE_WaitAudio(_THIS) |
| 297 | { |
| 298 | int size; |
| 299 | while(1) { |
| 300 | if (SDL_NAME(pa_context_get_state)(context) != PA_CONTEXT_READY || |
| 301 | SDL_NAME(pa_stream_get_state)(stream) != PA_STREAM_READY || |
| 302 | SDL_NAME(pa_mainloop_iterate)(mainloop, 1, NULL) < 0) { |
| 303 | this->enabled = 0; |
| 304 | return; |
| 305 | } |
| 306 | size = SDL_NAME(pa_stream_writable_size)(stream); |
| 307 | if (size >= mixlen) |
| 308 | return; |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | static void PULSE_PlayAudio(_THIS) |
| 313 | { |
| 314 | /* Write the audio data */ |
| 315 | if (SDL_NAME(pa_stream_write)(stream, mixbuf, mixlen, NULL, 0LL, PA_SEEK_RELATIVE) < 0) |
| 316 | this->enabled = 0; |
| 317 | } |
| 318 | |
| 319 | static Uint8 *PULSE_GetAudioBuf(_THIS) |
| 320 | { |
| 321 | return(mixbuf); |
| 322 | } |
| 323 | |
| 324 | static void PULSE_CloseAudio(_THIS) |
| 325 | { |
| 326 | if ( mixbuf != NULL ) { |
| 327 | SDL_FreeAudioMem(mixbuf); |
| 328 | mixbuf = NULL; |
| 329 | } |
| 330 | if ( stream != NULL ) { |
| 331 | SDL_NAME(pa_stream_disconnect)(stream); |
| 332 | SDL_NAME(pa_stream_unref)(stream); |
| 333 | stream = NULL; |
| 334 | } |
| 335 | if (context != NULL) { |
| 336 | SDL_NAME(pa_context_disconnect)(context); |
| 337 | SDL_NAME(pa_context_unref)(context); |
| 338 | context = NULL; |
| 339 | } |
| 340 | if (mainloop != NULL) { |
| 341 | SDL_NAME(pa_mainloop_free)(mainloop); |
| 342 | mainloop = NULL; |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | /* Try to get the name of the program */ |
| 347 | static char *get_progname(void) |
| 348 | { |
| 349 | #ifdef __LINUX__ |
| 350 | char *progname = NULL; |
| 351 | FILE *fp; |
| 352 | static char temp[BUFSIZ]; |
| 353 | |
| 354 | SDL_snprintf(temp, SDL_arraysize(temp), "/proc/%d/cmdline", getpid()); |
| 355 | fp = fopen(temp, "r"); |
| 356 | if ( fp != NULL ) { |
| 357 | if ( fgets(temp, sizeof(temp)-1, fp) ) { |
| 358 | progname = SDL_strrchr(temp, '/'); |
| 359 | if ( progname == NULL ) { |
| 360 | progname = temp; |
| 361 | } else { |
| 362 | progname = progname+1; |
| 363 | } |
| 364 | } |
| 365 | fclose(fp); |
| 366 | } |
| 367 | return(progname); |
| 368 | #elif defined(__NetBSD__) |
| 369 | return getprogname(); |
| 370 | #else |
| 371 | return("unknown"); |
| 372 | #endif |
| 373 | } |
| 374 | |
| 375 | static void stream_drain_complete(pa_stream *s, int success, void *userdata) { |
| 376 | } |
| 377 | |
| 378 | static void PULSE_WaitDone(_THIS) |
| 379 | { |
| 380 | pa_operation *o; |
| 381 | |
| 382 | o = SDL_NAME(pa_stream_drain)(stream, stream_drain_complete, NULL); |
| 383 | if (!o) |
| 384 | return; |
| 385 | |
| 386 | while (SDL_NAME(pa_operation_get_state)(o) != PA_OPERATION_DONE) { |
| 387 | if (SDL_NAME(pa_context_get_state)(context) != PA_CONTEXT_READY || |
| 388 | SDL_NAME(pa_stream_get_state)(stream) != PA_STREAM_READY || |
| 389 | SDL_NAME(pa_mainloop_iterate)(mainloop, 1, NULL) < 0) { |
| 390 | SDL_NAME(pa_operation_cancel)(o); |
| 391 | break; |
| 392 | } |
| 393 | } |
| 394 | SDL_NAME(pa_operation_unref)(o); |
| 395 | } |
| 396 | |
| 397 | static int PULSE_OpenAudio(_THIS, SDL_AudioSpec *spec) |
| 398 | { |
| 399 | int state; |
| 400 | Uint16 test_format; |
| 401 | pa_sample_spec paspec; |
| 402 | pa_buffer_attr paattr; |
| 403 | pa_channel_map pacmap; |
| 404 | pa_stream_flags_t flags = 0; |
| 405 | |
| 406 | paspec.format = PA_SAMPLE_INVALID; |
| 407 | for ( test_format = SDL_FirstAudioFormat(spec->format); test_format; ) { |
| 408 | switch ( test_format ) { |
| 409 | case AUDIO_U8: |
| 410 | paspec.format = PA_SAMPLE_U8; |
| 411 | break; |
| 412 | case AUDIO_S16LSB: |
| 413 | paspec.format = PA_SAMPLE_S16LE; |
| 414 | break; |
| 415 | case AUDIO_S16MSB: |
| 416 | paspec.format = PA_SAMPLE_S16BE; |
| 417 | break; |
| 418 | } |
| 419 | if ( paspec.format != PA_SAMPLE_INVALID ) |
| 420 | break; |
| 421 | } |
| 422 | if (paspec.format == PA_SAMPLE_INVALID ) { |
| 423 | SDL_SetError("Couldn't find any suitable audio formats"); |
| 424 | return(-1); |
| 425 | } |
| 426 | spec->format = test_format; |
| 427 | |
| 428 | paspec.channels = spec->channels; |
| 429 | paspec.rate = spec->freq; |
| 430 | |
| 431 | /* Calculate the final parameters for this audio specification */ |
| 432 | #ifdef PA_STREAM_ADJUST_LATENCY |
| 433 | spec->samples /= 2; /* Mix in smaller chunck to avoid underruns */ |
| 434 | #endif |
| 435 | SDL_CalculateAudioSpec(spec); |
| 436 | |
| 437 | /* Allocate mixing buffer */ |
| 438 | mixlen = spec->size; |
| 439 | mixbuf = (Uint8 *)SDL_AllocAudioMem(mixlen); |
| 440 | if ( mixbuf == NULL ) { |
| 441 | return(-1); |
| 442 | } |
| 443 | SDL_memset(mixbuf, spec->silence, spec->size); |
| 444 | |
| 445 | /* Reduced prebuffering compared to the defaults. */ |
| 446 | #ifdef PA_STREAM_ADJUST_LATENCY |
| 447 | paattr.tlength = mixlen * 4; /* 2x original requested bufsize */ |
| 448 | paattr.prebuf = -1; |
| 449 | paattr.maxlength = -1; |
| 450 | paattr.minreq = mixlen; /* -1 can lead to pa_stream_writable_size() |
| 451 | >= mixlen never becoming true */ |
| 452 | flags = PA_STREAM_ADJUST_LATENCY; |
| 453 | #else |
| 454 | paattr.tlength = mixlen*2; |
| 455 | paattr.prebuf = mixlen*2; |
| 456 | paattr.maxlength = mixlen*2; |
| 457 | paattr.minreq = mixlen; |
| 458 | #endif |
| 459 | |
| 460 | /* The SDL ALSA output hints us that we use Windows' channel mapping */ |
| 461 | /* http://bugzilla.libsdl.org/show_bug.cgi?id=110 */ |
| 462 | SDL_NAME(pa_channel_map_init_auto)( |
| 463 | &pacmap, spec->channels, PA_CHANNEL_MAP_WAVEEX); |
| 464 | |
| 465 | /* Set up a new main loop */ |
| 466 | if (!(mainloop = SDL_NAME(pa_mainloop_new)())) { |
| 467 | PULSE_CloseAudio(this); |
| 468 | SDL_SetError("pa_mainloop_new() failed"); |
| 469 | return(-1); |
| 470 | } |
| 471 | |
| 472 | mainloop_api = SDL_NAME(pa_mainloop_get_api)(mainloop); |
| 473 | if (!(context = SDL_NAME(pa_context_new)(mainloop_api, get_progname()))) { |
| 474 | PULSE_CloseAudio(this); |
| 475 | SDL_SetError("pa_context_new() failed"); |
| 476 | return(-1); |
| 477 | } |
| 478 | |
| 479 | /* Connect to the PulseAudio server */ |
| 480 | if (SDL_NAME(pa_context_connect)(context, NULL, 0, NULL) < 0) { |
| 481 | PULSE_CloseAudio(this); |
| 482 | SDL_SetError("Could not setup connection to PulseAudio"); |
| 483 | return(-1); |
| 484 | } |
| 485 | |
| 486 | do { |
| 487 | if (SDL_NAME(pa_mainloop_iterate)(mainloop, 1, NULL) < 0) { |
| 488 | PULSE_CloseAudio(this); |
| 489 | SDL_SetError("pa_mainloop_iterate() failed"); |
| 490 | return(-1); |
| 491 | } |
| 492 | state = SDL_NAME(pa_context_get_state)(context); |
| 493 | if (!PA_CONTEXT_IS_GOOD(state)) { |
| 494 | PULSE_CloseAudio(this); |
| 495 | SDL_SetError("Could not connect to PulseAudio"); |
| 496 | return(-1); |
| 497 | } |
| 498 | } while (state != PA_CONTEXT_READY); |
| 499 | |
| 500 | stream = SDL_NAME(pa_stream_new)( |
| 501 | context, |
| 502 | "Simple DirectMedia Layer", /* stream description */ |
| 503 | &paspec, /* sample format spec */ |
| 504 | &pacmap /* channel map */ |
| 505 | ); |
| 506 | if ( stream == NULL ) { |
| 507 | PULSE_CloseAudio(this); |
| 508 | SDL_SetError("Could not setup PulseAudio stream"); |
| 509 | return(-1); |
| 510 | } |
| 511 | |
| 512 | if (SDL_NAME(pa_stream_connect_playback)(stream, NULL, &paattr, flags, |
| 513 | NULL, NULL) < 0) { |
| 514 | PULSE_CloseAudio(this); |
| 515 | SDL_SetError("Could not connect PulseAudio stream"); |
| 516 | return(-1); |
| 517 | } |
| 518 | |
| 519 | do { |
| 520 | if (SDL_NAME(pa_mainloop_iterate)(mainloop, 1, NULL) < 0) { |
| 521 | PULSE_CloseAudio(this); |
| 522 | SDL_SetError("pa_mainloop_iterate() failed"); |
| 523 | return(-1); |
| 524 | } |
| 525 | state = SDL_NAME(pa_stream_get_state)(stream); |
| 526 | if (!PA_STREAM_IS_GOOD(state)) { |
| 527 | PULSE_CloseAudio(this); |
| 528 | SDL_SetError("Could not create to PulseAudio stream"); |
| 529 | return(-1); |
| 530 | } |
| 531 | } while (state != PA_STREAM_READY); |
| 532 | |
| 533 | return(0); |
| 534 | } |