modules/audio_output/portaudio.c

   1 /*****************************************************************************
   2  * portaudio.c : portaudio (v19) audio output plugin
   3  *****************************************************************************
   4  * Copyright (C) 2002, 2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Frederic Ruget <frederic.ruget@free.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_aout.h>
  36
  37
  38 #include <portaudio.h>
  39
  40 #define FRAME_SIZE 1024              /* The size is in samples, not in bytes */
  41
  42 #ifdef WIN32
  43 #   define PORTAUDIO_IS_SERIOUSLY_BROKEN 1
  44 #endif
  45
  46 /*****************************************************************************
  47  * aout_sys_t: portaudio audio output method descriptor
  48  *****************************************************************************/
  49 typedef struct pa_thread_t
  50 {
  51     VLC_COMMON_MEMBERS
  52     aout_instance_t *p_aout;
  53
  54     vlc_cond_t  wait;
  55     vlc_mutex_t lock_wait;
  56     bool  b_wait;
  57     vlc_cond_t  signal;
  58     vlc_mutex_t lock_signal;
  59     bool  b_signal;
  60     bool  b_error;
  61
  62 } pa_thread_t;
  63
  64 struct aout_sys_t
  65 {
  66     aout_instance_t *p_aout;
  67     PaStream *p_stream;
  68
  69     PaDeviceIndex i_devices;
  70     int i_sample_size;
  71     PaDeviceIndex i_device_id;
  72     const PaDeviceInfo *deviceInfo;
  73
  74     bool b_chan_reorder;              /* do we need channel reordering */
  75     int pi_chan_table[AOUT_CHAN_MAX];
  76     uint32_t i_channel_mask;
  77     uint32_t i_bits_per_sample;
  78     uint32_t i_channels;
  79 };
  80
  81 static const uint32_t pi_channels_out[] =
  82     { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
  83       AOUT_CHAN_CENTER, AOUT_CHAN_LFE,
  84       AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT, AOUT_CHAN_REARCENTER,
  85       AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT, 0 };
  86
  87 #ifdef PORTAUDIO_IS_SERIOUSLY_BROKEN
  88 static bool b_init = 0;
  89 static pa_thread_t *pa_thread;
  90 static void* PORTAUDIOThread( vlc_object_t * );
  91 #endif
  92
  93 /*****************************************************************************
  94  * Local prototypes.
  95  *****************************************************************************/
  96 static int  Open        ( vlc_object_t * );
  97 static void Close       ( vlc_object_t * );
  98 static void Play        ( aout_instance_t * );
  99
 100 static int PAOpenDevice( aout_instance_t * );
 101 static int PAOpenStream( aout_instance_t * );
 102
 103 /*****************************************************************************
 104  * Module descriptor
 105  *****************************************************************************/
 106 #define DEVICE_TEXT N_("Output device")
 107 #define DEVICE_LONGTEXT N_("Portaudio identifier for the output device")
 108
 109 vlc_module_begin ()
 110     set_shortname( "PortAudio" )
 111     set_description( N_("PORTAUDIO audio output") )
 112     set_category( CAT_AUDIO )
 113     set_subcategory( SUBCAT_AUDIO_AOUT )
 114     add_integer( "portaudio-audio-device", 0, NULL,
 115                  DEVICE_TEXT, DEVICE_LONGTEXT, false )
 116         add_deprecated_alias( "portaudio-device" )   /* deprecated since 0.9.3 */
 117     set_capability( "audio output", 0 )
 118     set_callbacks( Open, Close )
 119 vlc_module_end ()
 120
 121 /* This routine will be called by the PortAudio engine when audio is needed.
 122  * It may called at interrupt level on some machines so don't do anything
 123  * that could mess up the system like calling malloc() or free().
 124  */
 125 static int paCallback( const void *inputBuffer, void *outputBuffer,
 126                        unsigned long framesPerBuffer,
 127                        const PaStreamCallbackTimeInfo *paDate,
 128                        PaStreamCallbackFlags statusFlags, void *p_cookie )
 129 {
 130     VLC_UNUSED( inputBuffer ); VLC_UNUSED( statusFlags );
 131
 132     struct aout_sys_t *p_sys = (struct aout_sys_t*) p_cookie;
 133     aout_instance_t   *p_aout = p_sys->p_aout;
 134     aout_buffer_t     *p_buffer;
 135     mtime_t out_date;
 136
 137     out_date = mdate() + (mtime_t) ( 1000000 *
 138         ( paDate->outputBufferDacTime - paDate->currentTime ) );
 139     p_buffer = aout_OutputNextBuffer( p_aout, out_date, true );
 140
 141     if ( p_buffer != NULL )
 142     {
 143         if( p_sys->b_chan_reorder )
 144         {
 145             /* Do the channel reordering here */
 146             aout_ChannelReorder( p_buffer->p_buffer, p_buffer->i_buffer,
 147                                  p_sys->i_channels, p_sys->pi_chan_table,
 148                                  p_sys->i_bits_per_sample );
 149         }
 150         vlc_memcpy( outputBuffer, p_buffer->p_buffer,
 151                     framesPerBuffer * p_sys->i_sample_size );
 152         /* aout_BufferFree may be dangereous here, but then so is
 153          * aout_OutputNextBuffer (calls aout_BufferFree internally).
 154          * one solution would be to link the no longer useful buffers
 155          * in a second fifo (in aout_OutputNextBuffer too) and to
 156          * wait until we are in Play to do the actual free.
 157          */
 158         aout_BufferFree( p_buffer );
 159     }
 160     else
 161         /* Audio output buffer shortage -> stop the fill process and wait */
 162     {
 163         vlc_memset( outputBuffer, 0, framesPerBuffer * p_sys->i_sample_size );
 164     }
 165     return 0;
 166 }
 167
 168 /*****************************************************************************
 169  * Open: open the audio device
 170  *****************************************************************************/
 171 static int Open( vlc_object_t * p_this )
 172 {
 173     aout_instance_t *p_aout = (aout_instance_t *)p_this;
 174     struct aout_sys_t * p_sys;
 175
 176     msg_Dbg( p_aout, "entering Open()");
 177
 178     /* Allocate p_sys structure */
 179     p_sys = malloc( sizeof(aout_sys_t) );
 180     if( p_sys == NULL )
 181         return VLC_ENOMEM;
 182     p_sys->p_aout = p_aout;
 183     p_sys->p_stream = 0;
 184     p_aout->output.p_sys = p_sys;
 185     p_aout->output.pf_play = Play;
 186
 187     /* Retrieve output device id from config */
 188     p_sys->i_device_id = var_CreateGetInteger( p_aout, "portaudio-audio-device" );
 189
 190 #ifdef PORTAUDIO_IS_SERIOUSLY_BROKEN
 191     if( !b_init )
 192     {
 193         int i_err;
 194
 195         /* Test device */
 196         if( PAOpenDevice( p_aout ) != VLC_SUCCESS )
 197         {
 198             msg_Err( p_aout, "cannot open portaudio device" );
 199             free( p_sys );
 200             return VLC_EGENERIC;
 201         }
 202
 203         /* Close device for now. We'll re-open it later on */
 204         if( ( i_err = Pa_Terminate() ) != paNoError )
 205         {
 206             msg_Err( p_aout, "closing the device returned %d", i_err );
 207         }
 208
 209         b_init = true;
 210
 211         /* Now we need to setup our DirectSound play notification structure */
 212         pa_thread = vlc_object_create( p_aout, sizeof(pa_thread_t) );
 213         pa_thread->p_aout = p_aout;
 214         pa_thread->b_error = false;
 215         vlc_mutex_init( &pa_thread->lock_wait );
 216         vlc_cond_init( &pa_thread->wait );
 217         pa_thread->b_wait = false;
 218         vlc_mutex_init( &pa_thread->lock_signal );
 219         vlc_cond_init( &pa_thread->signal );
 220         pa_thread->b_signal = false;
 221
 222         /* Create PORTAUDIOThread */
 223         if( vlc_thread_create( pa_thread, "aout", PORTAUDIOThread,
 224                                VLC_THREAD_PRIORITY_OUTPUT ) )
 225         {
 226             msg_Err( p_aout, "cannot create PORTAUDIO thread" );
 227             return VLC_EGENERIC;
 228         }
 229     }
 230     else
 231     {
 232         pa_thread->p_aout = p_aout;
 233         pa_thread->b_wait = false;
 234         pa_thread->b_signal = false;
 235         pa_thread->b_error = false;
 236     }
 237
 238     /* Signal start of stream */
 239     vlc_mutex_lock( &pa_thread->lock_signal );
 240     pa_thread->b_signal = true;
 241     vlc_cond_signal( &pa_thread->signal );
 242     vlc_mutex_unlock( &pa_thread->lock_signal );
 243
 244     /* Wait until thread is ready */
 245     vlc_mutex_lock( &pa_thread->lock_wait );
 246     if( !pa_thread->b_wait )
 247         vlc_cond_wait( &pa_thread->wait, &pa_thread->lock_wait );
 248     vlc_mutex_unlock( &pa_thread->lock_wait );
 249     pa_thread->b_wait = false;
 250
 251     if( pa_thread->b_error )
 252     {
 253         msg_Err( p_aout, "PORTAUDIO thread failed" );
 254         Close( p_this );
 255         return VLC_EGENERIC;
 256     }
 257
 258     return VLC_SUCCESS;
 259
 260 #else
 261
 262     if( PAOpenDevice( p_aout ) != VLC_SUCCESS )
 263     {
 264         msg_Err( p_aout, "cannot open portaudio device" );
 265         free( p_sys );
 266         return VLC_EGENERIC;
 267     }
 268
 269     if( PAOpenStream( p_aout ) != VLC_SUCCESS )
 270     {
 271         msg_Err( p_aout, "cannot open portaudio device" );
 272     }
 273
 274     return VLC_SUCCESS;
 275
 276 #endif
 277 }
 278
 279 /*****************************************************************************
 280  * Close: close the audio device
 281  *****************************************************************************/
 282 static void Close ( vlc_object_t *p_this )
 283 {
 284     aout_instance_t *p_aout = (aout_instance_t *)p_this;
 285     aout_sys_t *p_sys = p_aout->output.p_sys;
 286
 287     msg_Dbg( p_aout, "closing portaudio");
 288
 289 #ifdef PORTAUDIO_IS_SERIOUSLY_BROKEN
 290
 291     /* Signal end of stream */
 292     vlc_mutex_lock( &pa_thread->lock_signal );
 293     pa_thread->b_signal = true;
 294     vlc_cond_signal( &pa_thread->signal );
 295     vlc_mutex_unlock( &pa_thread->lock_signal );
 296
 297     /* Wait until thread is ready */
 298     vlc_mutex_lock( &pa_thread->lock_wait );
 299     if( !pa_thread->b_wait )
 300         vlc_cond_wait( &pa_thread->wait, &pa_thread->lock_wait );
 301     vlc_mutex_unlock( &pa_thread->lock_wait );
 302     pa_thread->b_wait = false;
 303
 304 #else
 305
 306     int i_err = Pa_StopStream( p_sys->p_stream );
 307     if( i_err != paNoError )
 308     {
 309         msg_Err( p_aout, "Pa_StopStream: %d (%s)", i_err,
 310                  Pa_GetErrorText( i_err ) );
 311     }
 312     i_err = Pa_CloseStream( p_sys->p_stream );
 313     if( i_err != paNoError )
 314     {
 315         msg_Err( p_aout, "Pa_CloseStream: %d (%s)", i_err,
 316                  Pa_GetErrorText( i_err ) );
 317     }
 318
 319     i_err = Pa_Terminate();
 320     if( i_err != paNoError )
 321     {
 322         msg_Err( p_aout, "Pa_Terminate: %d (%s)", i_err,
 323                  Pa_GetErrorText( i_err ) );
 324     }
 325
 326 #endif
 327
 328     msg_Dbg( p_aout, "portaudio closed");
 329     free( p_sys );
 330 }
 331
 332 static int PAOpenDevice( aout_instance_t *p_aout )
 333 {
 334     aout_sys_t *p_sys = p_aout->output.p_sys;
 335     const PaDeviceInfo *p_pdi;
 336     PaError i_err;
 337     vlc_value_t val, text;
 338     int i;
 339
 340     /* Initialize portaudio */
 341     i_err = Pa_Initialize();
 342     if( i_err != paNoError )
 343     {
 344         msg_Err( p_aout, "Pa_Initialize returned %d : %s",
 345                  i_err, Pa_GetErrorText( i_err ) );
 346
 347         return VLC_EGENERIC;
 348     }
 349
 350     p_sys->i_devices = Pa_GetDeviceCount();
 351     if( p_sys->i_devices < 0 )
 352     {
 353         i_err = p_sys->i_devices;
 354         msg_Err( p_aout, "Pa_GetDeviceCount returned %d : %s", i_err,
 355                  Pa_GetErrorText( i_err ) );
 356
 357         goto error;
 358     }
 359
 360     /* Display all devices info */
 361     msg_Dbg( p_aout, "number of devices = %d", p_sys->i_devices );
 362     for( i = 0; i < p_sys->i_devices; i++ )
 363     {
 364         p_pdi = Pa_GetDeviceInfo( i );
 365         msg_Dbg( p_aout, "------------------------------------- #%d", i );
 366         msg_Dbg( p_aout, "Name         = %s", p_pdi->name );
 367         msg_Dbg( p_aout, "Max Inputs   = %d, Max Outputs = %d",
 368                   p_pdi->maxInputChannels, p_pdi->maxOutputChannels );
 369     }
 370     msg_Dbg( p_aout, "-------------------------------------" );
 371
 372     msg_Dbg( p_aout, "requested device is #%d", p_sys->i_device_id );
 373     if( p_sys->i_device_id >= p_sys->i_devices )
 374     {
 375         msg_Err( p_aout, "device %d does not exist", p_sys->i_device_id );
 376         goto error;
 377     }
 378     p_sys->deviceInfo = Pa_GetDeviceInfo( p_sys->i_device_id );
 379
 380     if( p_sys->deviceInfo->maxOutputChannels < 1 )
 381     {
 382         msg_Err( p_aout, "no channel available" );
 383         goto error;
 384     }
 385
 386     if( var_Type( p_aout, "audio-device" ) == 0 )
 387     {
 388         var_Create( p_aout, "audio-device", VLC_VAR_INTEGER|VLC_VAR_HASCHOICE);
 389         text.psz_string = _("Audio Device");
 390         var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
 391
 392         if( p_sys->deviceInfo->maxOutputChannels >= 1 )
 393         {
 394             val.i_int = AOUT_VAR_MONO;
 395             text.psz_string = _("Mono");
 396             var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE,
 397                         &val, &text );
 398             msg_Dbg( p_aout, "device supports 1 channel" );
 399         }
 400         if( p_sys->deviceInfo->maxOutputChannels >= 2 )
 401         {
 402             val.i_int = AOUT_VAR_STEREO;
 403             text.psz_string = _("Stereo");
 404             var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE,
 405                         &val, &text );
 406             var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT,
 407                         &val, NULL );
 408             var_Set( p_aout, "audio-device", val );
 409             msg_Dbg( p_aout, "device supports 2 channels" );
 410         }
 411         if( p_sys->deviceInfo->maxOutputChannels >= 4 )
 412         {
 413             val.i_int = AOUT_VAR_2F2R;
 414             text.psz_string = _("2 Front 2 Rear");
 415             var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE,
 416                         &val, &text );
 417             msg_Dbg( p_aout, "device supports 4 channels" );
 418         }
 419         if( p_sys->deviceInfo->maxOutputChannels >= 5 )
 420         {
 421             val.i_int = AOUT_VAR_3F2R;
 422             text.psz_string = _("3 Front 2 Rear");
 423             var_Change( p_aout, "audio-device",
 424                         VLC_VAR_ADDCHOICE, &val, &text );
 425             msg_Dbg( p_aout, "device supports 5 channels" );
 426         }
 427         if( p_sys->deviceInfo->maxOutputChannels >= 6 )
 428         {
 429             val.i_int = AOUT_VAR_5_1;
 430             text.psz_string = _("5.1");
 431             var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE,
 432                         &val, &text );
 433             msg_Dbg( p_aout, "device supports 5.1 channels" );
 434         }
 435
 436         var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
 437         var_SetBool( p_aout, "intf-change", true );
 438     }
 439
 440     /* Audio format is paFloat32 (always supported by portaudio v19) */
 441     p_aout->output.output.i_format = VLC_CODEC_FL32;
 442
 443     return VLC_SUCCESS;
 444
 445  error:
 446     if( ( i_err = Pa_Terminate() ) != paNoError )
 447     {
 448         msg_Err( p_aout, "Pa_Terminate returned %d", i_err );
 449     }
 450     return VLC_EGENERIC;
 451 }
 452
 453 static int PAOpenStream( aout_instance_t *p_aout )
 454 {
 455     aout_sys_t *p_sys = p_aout->output.p_sys;
 456     const PaHostErrorInfo* paLastHostErrorInfo = Pa_GetLastHostErrorInfo();
 457     PaStreamParameters paStreamParameters;
 458     vlc_value_t val;
 459     int i_channels, i_err;
 460     uint32_t i_channel_mask;
 461
 462     if( var_Get( p_aout, "audio-device", &val ) < 0 )
 463     {
 464         return VLC_EGENERIC;
 465     }
 466
 467     if( val.i_int == AOUT_VAR_5_1 )
 468     {
 469         p_aout->output.output.i_physical_channels
 470             = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 471               | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
 472               | AOUT_CHAN_LFE;
 473     }
 474     else if( val.i_int == AOUT_VAR_3F2R )
 475     {
 476         p_aout->output.output.i_physical_channels
 477             = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 478             | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
 479     }
 480     else if( val.i_int == AOUT_VAR_2F2R )
 481     {
 482         p_aout->output.output.i_physical_channels
 483             = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
 484             | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
 485     }
 486     else if( val.i_int == AOUT_VAR_MONO )
 487     {
 488         p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
 489     }
 490     else
 491     {
 492         p_aout->output.output.i_physical_channels
 493             = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
 494     }
 495
 496     i_channels = aout_FormatNbChannels( &p_aout->output.output );
 497     msg_Dbg( p_aout, "nb_channels requested = %d", i_channels );
 498     i_channel_mask = p_aout->output.output.i_physical_channels;
 499
 500     /* Calculate the frame size in bytes */
 501     p_sys->i_sample_size = 4 * i_channels;
 502     p_aout->output.i_nb_samples = FRAME_SIZE;
 503     aout_FormatPrepare( &p_aout->output.output );
 504     aout_VolumeSoftInit( p_aout );
 505
 506     /* Check for channel reordering */
 507     p_aout->output.p_sys->i_channel_mask = i_channel_mask;
 508     p_aout->output.p_sys->i_bits_per_sample = 32; /* forced to paFloat32 */
 509     p_aout->output.p_sys->i_channels = i_channels;
 510
 511     p_aout->output.p_sys->b_chan_reorder =
 512         aout_CheckChannelReorder( NULL, pi_channels_out,
 513                                   i_channel_mask, i_channels,
 514                                   p_aout->output.p_sys->pi_chan_table );
 515
 516     if( p_aout->output.p_sys->b_chan_reorder )
 517     {
 518         msg_Dbg( p_aout, "channel reordering needed" );
 519     }
 520
 521     paStreamParameters.device = p_sys->i_device_id;
 522     paStreamParameters.channelCount = i_channels;
 523     paStreamParameters.sampleFormat = paFloat32;
 524     paStreamParameters.suggestedLatency =
 525         p_sys->deviceInfo->defaultLowOutputLatency;
 526     paStreamParameters.hostApiSpecificStreamInfo = NULL;
 527
 528     i_err = Pa_OpenStream( &p_sys->p_stream, NULL /* no input */,
 529                 &paStreamParameters, (double)p_aout->output.output.i_rate,
 530                 FRAME_SIZE, paClipOff, paCallback, p_sys );
 531     if( i_err != paNoError )
 532     {
 533         msg_Err( p_aout, "Pa_OpenStream returns %d : %s", i_err,
 534                  Pa_GetErrorText( i_err ) );
 535         if( i_err == paUnanticipatedHostError )
 536         {
 537             msg_Err( p_aout, "type %d code %ld : %s",
 538                      paLastHostErrorInfo->hostApiType,
 539                      paLastHostErrorInfo->errorCode,
 540                      paLastHostErrorInfo->errorText );
 541         }
 542         p_sys->p_stream = 0;
 543         return VLC_EGENERIC;
 544     }
 545
 546     i_err = Pa_StartStream( p_sys->p_stream );
 547     if( i_err != paNoError )
 548     {
 549         msg_Err( p_aout, "Pa_StartStream() failed" );
 550         Pa_CloseStream( p_sys->p_stream );
 551         return VLC_EGENERIC;
 552     }
 553
 554     return VLC_SUCCESS;
 555 }
 556
 557 /*****************************************************************************
 558  * Play: play sound
 559  *****************************************************************************/
 560 static void Play( aout_instance_t * p_aout )
 561 {
 562     VLC_UNUSED( p_aout );
 563 }
 564
 565 #ifdef PORTAUDIO_IS_SERIOUSLY_BROKEN
 566 /*****************************************************************************
 567  * PORTAUDIOThread: all interactions with libportaudio.a are handled
 568  * in this single thread.  Otherwise libportaudio.a is _not_ happy :-(
 569  *****************************************************************************/
 570 static void* PORTAUDIOThread( vlc_object_t *p_this )
 571 {
 572     pa_thread_t *pa_thread = (pa_thread_t*)p_this;
 573     aout_instance_t *p_aout;
 574     aout_sys_t *p_sys;
 575     int i_err;
 576     int canc = vlc_savecancel ();
 577
 578     while( vlc_object_alive (pa_thread) )
 579     {
 580         /* Wait for start of stream */
 581         vlc_mutex_lock( &pa_thread->lock_signal );
 582         if( !pa_thread->b_signal )
 583             vlc_cond_wait( &pa_thread->signal, &pa_thread->lock_signal );
 584         vlc_mutex_unlock( &pa_thread->lock_signal );
 585         pa_thread->b_signal = false;
 586
 587         p_aout = pa_thread->p_aout;
 588         p_sys = p_aout->output.p_sys;
 589
 590         if( PAOpenDevice( p_aout ) != VLC_SUCCESS )
 591         {
 592             msg_Err( p_aout, "cannot open portaudio device" );
 593             pa_thread->b_error = true;
 594         }
 595
 596         if( !pa_thread->b_error && PAOpenStream( p_aout ) != VLC_SUCCESS )
 597         {
 598             msg_Err( p_aout, "cannot open portaudio device" );
 599             pa_thread->b_error = true;
 600
 601             i_err = Pa_Terminate();
 602             if( i_err != paNoError )
 603             {
 604                 msg_Err( p_aout, "Pa_Terminate: %d (%s)", i_err,
 605                          Pa_GetErrorText( i_err ) );
 606             }
 607         }
 608
 609         /* Tell the main thread that we are ready */
 610         vlc_mutex_lock( &pa_thread->lock_wait );
 611         pa_thread->b_wait = true;
 612         vlc_cond_signal( &pa_thread->wait );
 613         vlc_mutex_unlock( &pa_thread->lock_wait );
 614
 615         /* Wait for end of stream */
 616         vlc_mutex_lock( &pa_thread->lock_signal );
 617         if( !pa_thread->b_signal )
 618             vlc_cond_wait( &pa_thread->signal, &pa_thread->lock_signal );
 619         vlc_mutex_unlock( &pa_thread->lock_signal );
 620         pa_thread->b_signal = false;
 621
 622         if( pa_thread->b_error ) continue;
 623
 624         i_err = Pa_StopStream( p_sys->p_stream );
 625         if( i_err != paNoError )
 626         {
 627             msg_Err( p_aout, "Pa_StopStream: %d (%s)", i_err,
 628                      Pa_GetErrorText( i_err ) );
 629         }
 630         i_err = Pa_CloseStream( p_sys->p_stream );
 631         if( i_err != paNoError )
 632         {
 633             msg_Err( p_aout, "Pa_CloseStream: %d (%s)", i_err,
 634                      Pa_GetErrorText( i_err ) );
 635         }
 636         i_err = Pa_Terminate();
 637         if( i_err != paNoError )
 638         {
 639             msg_Err( p_aout, "Pa_Terminate: %d (%s)", i_err,
 640                      Pa_GetErrorText( i_err ) );
 641         }
 642
 643         /* Tell the main thread that we are ready */
 644         vlc_mutex_lock( &pa_thread->lock_wait );
 645         pa_thread->b_wait = true;
 646         vlc_cond_signal( &pa_thread->wait );
 647         vlc_mutex_unlock( &pa_thread->lock_wait );
 648     }
 649     vlc_restorecancel (canc);
 650     return NULL;
 651 }
 652 #endif