1 /*****************************************************************************
2 * waveout.c : Windows waveOut plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
7 * Authors: Gildas Bazin <gbazin@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <string.h> /* strerror() */
28 #include <stdlib.h> /* calloc(), malloc(), free() */
32 #include "aout_internal.h"
38 # define FRAME_SIZE 4096 /* The size is in samples, not in bytes */
40 # define FRAME_SIZE 1024 /* The size is in samples, not in bytes */
44 /*****************************************************************************
46 *****************************************************************************/
48 # define DWORD_PTR DWORD
51 #ifndef WAVE_FORMAT_IEEE_FLOAT
52 # define WAVE_FORMAT_IEEE_FLOAT 0x0003
55 #ifndef WAVE_FORMAT_DOLBY_AC3_SPDIF
56 # define WAVE_FORMAT_DOLBY_AC3_SPDIF 0x0092
59 #ifndef WAVE_FORMAT_EXTENSIBLE
60 #define WAVE_FORMAT_EXTENSIBLE 0xFFFE
63 #ifndef SPEAKER_FRONT_LEFT
64 # define SPEAKER_FRONT_LEFT 0x1
65 # define SPEAKER_FRONT_RIGHT 0x2
66 # define SPEAKER_FRONT_CENTER 0x4
67 # define SPEAKER_LOW_FREQUENCY 0x8
68 # define SPEAKER_BACK_LEFT 0x10
69 # define SPEAKER_BACK_RIGHT 0x20
70 # define SPEAKER_FRONT_LEFT_OF_CENTER 0x40
71 # define SPEAKER_FRONT_RIGHT_OF_CENTER 0x80
72 # define SPEAKER_BACK_CENTER 0x100
73 # define SPEAKER_SIDE_LEFT 0x200
74 # define SPEAKER_SIDE_RIGHT 0x400
75 # define SPEAKER_TOP_CENTER 0x800
76 # define SPEAKER_TOP_FRONT_LEFT 0x1000
77 # define SPEAKER_TOP_FRONT_CENTER 0x2000
78 # define SPEAKER_TOP_FRONT_RIGHT 0x4000
79 # define SPEAKER_TOP_BACK_LEFT 0x8000
80 # define SPEAKER_TOP_BACK_CENTER 0x10000
81 # define SPEAKER_TOP_BACK_RIGHT 0x20000
82 # define SPEAKER_RESERVED 0x80000000
85 #ifndef _WAVEFORMATEXTENSIBLE_
89 WORD wValidBitsPerSample; /* bits of precision */
90 WORD wSamplesPerBlock; /* valid if wBitsPerSample==0 */
91 WORD wReserved; /* If neither applies, set to zero. */
93 DWORD dwChannelMask; /* which channels are */
94 /* present in stream */
96 } WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
99 static const GUID __KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = {WAVE_FORMAT_IEEE_FLOAT, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
100 static const GUID __KSDATAFORMAT_SUBTYPE_PCM = {WAVE_FORMAT_PCM, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
101 static const GUID __KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF = {WAVE_FORMAT_DOLBY_AC3_SPDIF, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
103 /*****************************************************************************
105 *****************************************************************************/
106 static int Open ( vlc_object_t * );
107 static void Close ( vlc_object_t * );
108 static void Play ( aout_instance_t * );
110 /*****************************************************************************
111 * notification_thread_t: waveOut event thread
112 *****************************************************************************/
113 typedef struct notification_thread_t
116 aout_instance_t *p_aout;
118 } notification_thread_t;
120 /* local functions */
121 static void Probe ( aout_instance_t * );
122 static int OpenWaveOut ( aout_instance_t *, int, int, int, int, vlc_bool_t );
123 static int OpenWaveOutPCM( aout_instance_t *, int*, int, int, int, vlc_bool_t );
124 static int PlayWaveOut ( aout_instance_t *, HWAVEOUT, WAVEHDR *,
127 static void CALLBACK WaveOutCallback ( HWAVEOUT, UINT, DWORD, DWORD, DWORD );
128 static void WaveOutThread( notification_thread_t * );
130 /*****************************************************************************
132 *****************************************************************************/
133 #define FLOAT_TEXT N_("Use float32 output")
134 #define FLOAT_LONGTEXT N_( \
135 "The option allows you to enable or disable the high-quality float32 " \
136 "audio output mode (which is not well supported by some soundcards)." )
139 set_shortname( "WaveOut" );
140 set_description( _("Win32 waveOut extension output") );
141 set_capability( "audio output", 50 );
142 set_category( CAT_AUDIO );
143 set_subcategory( SUBCAT_AUDIO_AOUT );
144 add_bool( "waveout-float32", 1, 0, FLOAT_TEXT, FLOAT_LONGTEXT, VLC_TRUE );
145 set_callbacks( Open, Close );
148 /*****************************************************************************
149 * aout_sys_t: waveOut audio output method descriptor
150 *****************************************************************************
151 * This structure is part of the audio output thread descriptor.
152 * It describes the waveOut specific properties of an audio device.
153 *****************************************************************************/
156 HWAVEOUT h_waveout; /* handle to waveout instance */
158 WAVEFORMATEXTENSIBLE waveformat; /* audio format */
160 WAVEHDR waveheader[FRAMES_NUM];
162 notification_thread_t *p_notif; /* WaveOutThread id */
167 byte_t *p_silence_buffer; /* buffer we use to play silence */
169 vlc_bool_t b_chan_reorder; /* do we need channel reordering */
170 int pi_chan_table[AOUT_CHAN_MAX];
173 static const uint32_t pi_channels_src[] =
174 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
175 AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT,
176 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
177 AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
178 static const uint32_t pi_channels_in[] =
179 { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
180 SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT,
181 SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
182 SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY, 0 };
183 static const uint32_t pi_channels_out[] =
184 { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
185 SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY,
186 SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
187 SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT, 0 };
189 /*****************************************************************************
190 * Open: open the audio device
191 *****************************************************************************
192 * This function opens and setups Win32 waveOut
193 *****************************************************************************/
194 static int Open( vlc_object_t *p_this )
196 aout_instance_t *p_aout = (aout_instance_t *)p_this;
200 /* Allocate structure */
201 p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
203 if( p_aout->output.p_sys == NULL )
205 msg_Err( p_aout, "out of memory" );
209 p_aout->output.pf_play = Play;
210 p_aout->b_die = VLC_FALSE;
212 if( var_Type( p_aout, "audio-device" ) == 0 )
217 if( var_Get( p_aout, "audio-device", &val ) < 0 )
219 /* Probe() has failed. */
220 free( p_aout->output.p_sys );
224 var_Create( p_aout, "waveout-float32", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
226 /* Open the device */
227 if( val.i_int == AOUT_VAR_SPDIF )
229 p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
231 if( OpenWaveOut( p_aout, VLC_FOURCC('s','p','d','i'),
232 p_aout->output.output.i_physical_channels,
233 aout_FormatNbChannels( &p_aout->output.output ),
234 p_aout->output.output.i_rate, VLC_FALSE )
237 msg_Err( p_aout, "cannot open waveout audio device" );
238 free( p_aout->output.p_sys );
242 /* Calculate the frame size in bytes */
243 p_aout->output.i_nb_samples = A52_FRAME_NB;
244 p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
245 p_aout->output.output.i_frame_length = A52_FRAME_NB;
246 p_aout->output.p_sys->i_buffer_size =
247 p_aout->output.output.i_bytes_per_frame;
249 aout_VolumeNoneInit( p_aout );
253 if( val.i_int == AOUT_VAR_5_1 )
255 p_aout->output.output.i_physical_channels
256 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
257 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
260 else if( val.i_int == AOUT_VAR_2F2R )
262 p_aout->output.output.i_physical_channels
263 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
264 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
266 else if( val.i_int == AOUT_VAR_MONO )
268 p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
272 p_aout->output.output.i_physical_channels
273 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
276 if( OpenWaveOutPCM( p_aout, &p_aout->output.output.i_format,
277 p_aout->output.output.i_physical_channels,
278 aout_FormatNbChannels( &p_aout->output.output ),
279 p_aout->output.output.i_rate, VLC_FALSE )
282 msg_Err( p_aout, "cannot open waveout audio device" );
283 free( p_aout->output.p_sys );
287 /* Calculate the frame size in bytes */
288 p_aout->output.i_nb_samples = FRAME_SIZE;
289 aout_FormatPrepare( &p_aout->output.output );
290 p_aout->output.p_sys->i_buffer_size = FRAME_SIZE *
291 p_aout->output.output.i_bytes_per_frame;
293 aout_VolumeSoftInit( p_aout );
297 waveOutReset( p_aout->output.p_sys->h_waveout );
299 /* Allocate silence buffer */
300 p_aout->output.p_sys->p_silence_buffer =
301 malloc( p_aout->output.p_sys->i_buffer_size );
302 if( p_aout->output.p_sys->p_silence_buffer == NULL )
304 free( p_aout->output.p_sys );
305 msg_Err( p_aout, "out of memory" );
309 /* Zero the buffer. WinCE doesn't have calloc(). */
310 memset( p_aout->output.p_sys->p_silence_buffer, 0,
311 p_aout->output.p_sys->i_buffer_size );
313 /* Now we need to setup our waveOut play notification structure */
314 p_aout->output.p_sys->p_notif =
315 vlc_object_create( p_aout, sizeof(notification_thread_t) );
316 p_aout->output.p_sys->p_notif->p_aout = p_aout;
317 p_aout->output.p_sys->event = CreateEvent( NULL, FALSE, FALSE, NULL );
319 /* Then launch the notification thread */
320 if( vlc_thread_create( p_aout->output.p_sys->p_notif,
321 "waveOut Notification Thread", WaveOutThread,
322 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
324 msg_Err( p_aout, "cannot create WaveOutThread" );
327 /* We need to kick off the playback in order to have the callback properly
329 for( i = 0; i < FRAMES_NUM; i++ )
331 p_aout->output.p_sys->waveheader[i].dwFlags = WHDR_DONE;
332 p_aout->output.p_sys->waveheader[i].dwUser = 0;
334 PlayWaveOut( p_aout, p_aout->output.p_sys->h_waveout,
335 &p_aout->output.p_sys->waveheader[0], NULL );
340 /*****************************************************************************
341 * Probe: probe the audio device for available formats and channels
342 *****************************************************************************/
343 static void Probe( aout_instance_t * p_aout )
345 vlc_value_t val, text;
347 unsigned int i_physical_channels;
349 var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
350 text.psz_string = _("Audio Device");
351 var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
353 /* Test for 5.1 support */
354 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
355 AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
356 AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE;
357 if( p_aout->output.output.i_physical_channels == i_physical_channels )
359 if( OpenWaveOutPCM( p_aout, &i_format,
360 i_physical_channels, 6,
361 p_aout->output.output.i_rate, VLC_TRUE )
364 val.i_int = AOUT_VAR_5_1;
365 text.psz_string = N_("5.1");
366 var_Change( p_aout, "audio-device",
367 VLC_VAR_ADDCHOICE, &val, &text );
368 msg_Dbg( p_aout, "device supports 5.1 channels" );
372 /* Test for 2 Front 2 Rear support */
373 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
374 AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
375 if( ( p_aout->output.output.i_physical_channels & i_physical_channels )
376 == i_physical_channels )
378 if( OpenWaveOutPCM( p_aout, &i_format,
379 i_physical_channels, 4,
380 p_aout->output.output.i_rate, VLC_TRUE )
383 val.i_int = AOUT_VAR_2F2R;
384 text.psz_string = N_("2 Front 2 Rear");
385 var_Change( p_aout, "audio-device",
386 VLC_VAR_ADDCHOICE, &val, &text );
387 msg_Dbg( p_aout, "device supports 4 channels" );
391 /* Test for stereo support */
392 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
393 if( OpenWaveOutPCM( p_aout, &i_format,
394 i_physical_channels, 2,
395 p_aout->output.output.i_rate, VLC_TRUE )
398 val.i_int = AOUT_VAR_STEREO;
399 text.psz_string = N_("Stereo");
400 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
401 msg_Dbg( p_aout, "device supports 2 channels" );
404 /* Test for mono support */
405 i_physical_channels = AOUT_CHAN_CENTER;
406 if( OpenWaveOutPCM( p_aout, &i_format,
407 i_physical_channels, 1,
408 p_aout->output.output.i_rate, VLC_TRUE )
411 val.i_int = AOUT_VAR_MONO;
412 text.psz_string = N_("Mono");
413 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
414 msg_Dbg( p_aout, "device supports 1 channel" );
417 /* Test for SPDIF support */
418 if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
420 if( OpenWaveOut( p_aout, VLC_FOURCC('s','p','d','i'),
421 p_aout->output.output.i_physical_channels,
422 aout_FormatNbChannels( &p_aout->output.output ),
423 p_aout->output.output.i_rate, VLC_TRUE )
426 msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
427 val.i_int = AOUT_VAR_SPDIF;
428 text.psz_string = N_("A/52 over S/PDIF");
429 var_Change( p_aout, "audio-device",
430 VLC_VAR_ADDCHOICE, &val, &text );
431 if( config_GetInt( p_aout, "spdif" ) )
432 var_Set( p_aout, "audio-device", val );
436 var_Change( p_aout, "audio-device", VLC_VAR_CHOICESCOUNT, &val, NULL );
439 /* Probe() has failed. */
440 var_Destroy( p_aout, "audio-device" );
444 var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
446 val.b_bool = VLC_TRUE;
447 var_Set( p_aout, "intf-change", val );
450 /*****************************************************************************
451 * Play: play a sound buffer
452 *****************************************************************************
453 * This doesn't actually play the buffer. This just stores the buffer so it
454 * can be played by the callback thread.
455 *****************************************************************************/
456 static void Play( aout_instance_t *_p_aout )
460 /*****************************************************************************
461 * Close: close the audio device
462 *****************************************************************************/
463 static void Close( vlc_object_t *p_this )
465 aout_instance_t *p_aout = (aout_instance_t *)p_this;
466 aout_sys_t *p_sys = p_aout->output.p_sys;
468 /* Before calling waveOutClose we must reset the device */
469 p_aout->b_die = VLC_TRUE;
471 waveOutReset( p_sys->h_waveout );
473 /* wake up the audio thread */
474 SetEvent( p_sys->event );
475 vlc_thread_join( p_sys->p_notif );
476 vlc_object_destroy( p_sys->p_notif );
477 CloseHandle( p_sys->event );
479 /* Close the device */
480 if( waveOutClose( p_sys->h_waveout ) != MMSYSERR_NOERROR )
482 msg_Err( p_aout, "waveOutClose failed" );
485 free( p_sys->p_silence_buffer );
489 /*****************************************************************************
490 * OpenWaveOut: open the waveout sound device
491 ****************************************************************************/
492 static int OpenWaveOut( aout_instance_t *p_aout, int i_format,
493 int i_channels, int i_nb_channels, int i_rate,
499 /* Set sound format */
501 #define waveformat p_aout->output.p_sys->waveformat
503 waveformat.dwChannelMask = 0;
504 for( i = 0; i < sizeof(pi_channels_src)/sizeof(uint32_t); i++ )
506 if( i_channels & pi_channels_src[i] )
507 waveformat.dwChannelMask |= pi_channels_in[i];
512 case VLC_FOURCC('s','p','d','i'):
514 /* To prevent channel re-ordering */
515 waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
516 waveformat.Format.wBitsPerSample = 16;
517 waveformat.Samples.wValidBitsPerSample =
518 waveformat.Format.wBitsPerSample;
519 waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
520 waveformat.SubFormat = __KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
523 case VLC_FOURCC('f','l','3','2'):
524 waveformat.Format.wBitsPerSample = sizeof(float) * 8;
525 waveformat.Samples.wValidBitsPerSample =
526 waveformat.Format.wBitsPerSample;
527 waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
528 waveformat.SubFormat = __KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
531 case VLC_FOURCC('s','1','6','l'):
532 waveformat.Format.wBitsPerSample = 16;
533 waveformat.Samples.wValidBitsPerSample =
534 waveformat.Format.wBitsPerSample;
535 waveformat.Format.wFormatTag = WAVE_FORMAT_PCM;
536 waveformat.SubFormat = __KSDATAFORMAT_SUBTYPE_PCM;
540 waveformat.Format.nChannels = i_nb_channels;
541 waveformat.Format.nSamplesPerSec = i_rate;
542 waveformat.Format.nBlockAlign =
543 waveformat.Format.wBitsPerSample / 8 * i_nb_channels;
544 waveformat.Format.nAvgBytesPerSec =
545 waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign;
547 /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */
548 if( i_nb_channels <= 2 )
550 waveformat.Format.cbSize = 0;
554 waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
555 waveformat.Format.cbSize =
556 sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
559 /* Open the device */
560 result = waveOutOpen( &p_aout->output.p_sys->h_waveout, WAVE_MAPPER,
561 (WAVEFORMATEX *)&waveformat,
562 (DWORD_PTR)WaveOutCallback, (DWORD_PTR)p_aout,
563 CALLBACK_FUNCTION | (b_probe?WAVE_FORMAT_QUERY:0) );
564 if( result == WAVERR_BADFORMAT )
566 msg_Warn( p_aout, "waveOutOpen failed WAVERR_BADFORMAT" );
569 if( result == MMSYSERR_ALLOCATED )
571 msg_Warn( p_aout, "waveOutOpen failed WAVERR_ALLOCATED" );
574 if( result != MMSYSERR_NOERROR )
576 msg_Warn( p_aout, "waveOutOpen failed" );
580 p_aout->output.p_sys->b_chan_reorder =
581 aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
582 waveformat.dwChannelMask, i_nb_channels,
583 p_aout->output.p_sys->pi_chan_table );
585 if( p_aout->output.p_sys->b_chan_reorder )
587 msg_Dbg( p_aout, "channel reordering needed" );
596 /*****************************************************************************
597 * OpenWaveOutPCM: open a PCM waveout sound device
598 ****************************************************************************/
599 static int OpenWaveOutPCM( aout_instance_t *p_aout, int *i_format,
600 int i_channels, int i_nb_channels, int i_rate,
605 var_Get( p_aout, "waveout-float32", &val );
607 if( !val.b_bool || OpenWaveOut( p_aout, VLC_FOURCC('f','l','3','2'),
608 i_channels, i_nb_channels, i_rate, b_probe )
611 if ( OpenWaveOut( p_aout, VLC_FOURCC('s','1','6','l'),
612 i_channels, i_nb_channels, i_rate, b_probe )
619 *i_format = VLC_FOURCC('s','1','6','l');
625 *i_format = VLC_FOURCC('f','l','3','2');
630 /*****************************************************************************
631 * PlayWaveOut: play a buffer through the WaveOut device
632 *****************************************************************************/
633 static int PlayWaveOut( aout_instance_t *p_aout, HWAVEOUT h_waveout,
634 WAVEHDR *p_waveheader, aout_buffer_t *p_buffer )
638 /* Prepare the buffer */
639 if( p_buffer != NULL )
640 p_waveheader->lpData = p_buffer->p_buffer;
642 /* Use silence buffer instead */
643 p_waveheader->lpData = p_aout->output.p_sys->p_silence_buffer;
645 p_waveheader->dwUser = p_buffer ? (DWORD_PTR)p_buffer : (DWORD_PTR)1;
646 p_waveheader->dwBufferLength = p_aout->output.p_sys->i_buffer_size;
647 p_waveheader->dwFlags = 0;
649 result = waveOutPrepareHeader( h_waveout, p_waveheader, sizeof(WAVEHDR) );
650 if( result != MMSYSERR_NOERROR )
652 msg_Err( p_aout, "waveOutPrepareHeader failed" );
656 /* Send the buffer to the waveOut queue */
657 result = waveOutWrite( h_waveout, p_waveheader, sizeof(WAVEHDR) );
658 if( result != MMSYSERR_NOERROR )
660 msg_Err( p_aout, "waveOutWrite failed" );
667 /*****************************************************************************
668 * WaveOutCallback: what to do once WaveOut has played its sound samples
669 *****************************************************************************/
670 static void CALLBACK WaveOutCallback( HWAVEOUT h_waveout, UINT uMsg,
672 DWORD dwParam1, DWORD dwParam2 )
674 aout_instance_t *p_aout = (aout_instance_t *)_p_aout;
675 int i, i_queued_frames = 0;
677 if( uMsg != WOM_DONE ) return;
679 if( p_aout->b_die ) return;
681 /* Find out the current latency */
682 for( i = 0; i < FRAMES_NUM; i++ )
684 /* Check if frame buf is available */
685 if( !(p_aout->output.p_sys->waveheader[i].dwFlags & WHDR_DONE) )
691 /* Don't wake up the thread too much */
692 if( i_queued_frames < FRAMES_NUM / 2 )
693 SetEvent( p_aout->output.p_sys->event );
696 /*****************************************************************************
697 * WaveOutThread: this thread will capture play notification events.
698 *****************************************************************************
699 * We use this thread to feed new audio samples to the sound card because
700 * we are not authorized to use waveOutWrite() directly in the waveout
702 *****************************************************************************/
703 static void WaveOutThread( notification_thread_t *p_notif )
705 aout_instance_t *p_aout = p_notif->p_aout;
706 aout_sys_t *p_sys = p_aout->output.p_sys;
707 aout_buffer_t *p_buffer = NULL;
708 WAVEHDR *p_waveheader = p_sys->waveheader;
709 int i, i_queued_frames;
712 /* We don't want any resampling when using S/PDIF */
713 b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i');
717 WaitForSingleObject( p_sys->event, INFINITE );
719 /* Cleanup and find out the current latency */
721 for( i = 0; i < FRAMES_NUM; i++ )
723 if( (p_waveheader[i].dwFlags & WHDR_DONE) &&
724 p_waveheader[i].dwUser )
726 /* Unprepare and free the buffers which has just been played */
727 waveOutUnprepareHeader( p_sys->h_waveout, &p_waveheader[i],
730 if( p_waveheader[i].dwUser != 1 )
731 aout_BufferFree( (aout_buffer_t *)p_waveheader[i].dwUser );
733 p_waveheader[i].dwUser = 0;
736 /* Check if frame buf is available */
737 if( !(p_waveheader[i].dwFlags & WHDR_DONE) )
743 if( p_aout->b_die ) return;
745 /* Try to fill in as many frame buffers as possible */
746 for( i = 0; i < FRAMES_NUM; i++ )
748 /* Check if frame buf is available */
749 if( p_waveheader[i].dwFlags & WHDR_DONE )
751 /* Take into account the latency */
752 p_buffer = aout_OutputNextBuffer( p_aout,
753 mdate() + 1000000 * i_queued_frames /
754 p_aout->output.output.i_rate * p_aout->output.i_nb_samples,
757 if( !p_buffer && i_queued_frames )
759 /* We aren't late so no need to play a blank sample */
763 /* Do the channel reordering */
764 if( p_buffer && p_sys->b_chan_reorder )
766 aout_ChannelReorder( p_buffer->p_buffer,
767 p_buffer->i_nb_bytes,
768 p_sys->waveformat.Format.nChannels,
769 p_sys->pi_chan_table,
770 p_sys->waveformat.Format.wBitsPerSample );
773 PlayWaveOut( p_aout, p_sys->h_waveout,
774 &p_waveheader[i], p_buffer );