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"
37 #define FRAME_SIZE 1024 /* The size is in samples, not in bytes */
40 /*****************************************************************************
42 *****************************************************************************/
44 # define DWORD_PTR DWORD
47 #ifndef WAVE_FORMAT_IEEE_FLOAT
48 # define WAVE_FORMAT_IEEE_FLOAT 0x0003
51 #ifndef WAVE_FORMAT_DOLBY_AC3_SPDIF
52 # define WAVE_FORMAT_DOLBY_AC3_SPDIF 0x0092
55 #ifndef WAVE_FORMAT_EXTENSIBLE
56 #define WAVE_FORMAT_EXTENSIBLE 0xFFFE
59 #ifndef SPEAKER_FRONT_LEFT
60 # define SPEAKER_FRONT_LEFT 0x1
61 # define SPEAKER_FRONT_RIGHT 0x2
62 # define SPEAKER_FRONT_CENTER 0x4
63 # define SPEAKER_LOW_FREQUENCY 0x8
64 # define SPEAKER_BACK_LEFT 0x10
65 # define SPEAKER_BACK_RIGHT 0x20
66 # define SPEAKER_FRONT_LEFT_OF_CENTER 0x40
67 # define SPEAKER_FRONT_RIGHT_OF_CENTER 0x80
68 # define SPEAKER_BACK_CENTER 0x100
69 # define SPEAKER_SIDE_LEFT 0x200
70 # define SPEAKER_SIDE_RIGHT 0x400
71 # define SPEAKER_TOP_CENTER 0x800
72 # define SPEAKER_TOP_FRONT_LEFT 0x1000
73 # define SPEAKER_TOP_FRONT_CENTER 0x2000
74 # define SPEAKER_TOP_FRONT_RIGHT 0x4000
75 # define SPEAKER_TOP_BACK_LEFT 0x8000
76 # define SPEAKER_TOP_BACK_CENTER 0x10000
77 # define SPEAKER_TOP_BACK_RIGHT 0x20000
78 # define SPEAKER_RESERVED 0x80000000
81 #ifndef _WAVEFORMATEXTENSIBLE_
85 WORD wValidBitsPerSample; /* bits of precision */
86 WORD wSamplesPerBlock; /* valid if wBitsPerSample==0 */
87 WORD wReserved; /* If neither applies, set to zero. */
89 DWORD dwChannelMask; /* which channels are */
90 /* present in stream */
92 } WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
95 static const GUID __KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = {WAVE_FORMAT_IEEE_FLOAT, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
96 static const GUID __KSDATAFORMAT_SUBTYPE_PCM = {WAVE_FORMAT_PCM, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
97 static const GUID __KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF = {WAVE_FORMAT_DOLBY_AC3_SPDIF, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
99 /*****************************************************************************
101 *****************************************************************************/
102 static int Open ( vlc_object_t * );
103 static void Close ( vlc_object_t * );
104 static void Play ( aout_instance_t * );
106 /*****************************************************************************
107 * notification_thread_t: waveOut event thread
108 *****************************************************************************/
109 typedef struct notification_thread_t
112 aout_instance_t *p_aout;
114 } notification_thread_t;
116 /* local functions */
117 static void Probe ( aout_instance_t * );
118 static int OpenWaveOut ( aout_instance_t *, int, int, int, int, vlc_bool_t );
119 static int OpenWaveOutPCM( aout_instance_t *, int*, int, int, int, vlc_bool_t );
120 static int PlayWaveOut ( aout_instance_t *, HWAVEOUT, WAVEHDR *,
123 static void CALLBACK WaveOutCallback ( HWAVEOUT, UINT, DWORD, DWORD, DWORD );
124 static void WaveOutThread( notification_thread_t * );
126 /*****************************************************************************
128 *****************************************************************************/
129 #define FLOAT_TEXT N_("Use float32 output")
130 #define FLOAT_LONGTEXT N_( \
131 "The option allows you to enable or disable the high-quality float32 " \
132 "audio output mode (which is not well supported by some soundcards)." )
135 set_description( _("Win32 waveOut extension output") );
136 set_capability( "audio output", 50 );
137 set_category( CAT_AUDIO );
138 set_subcategory( SUBCAT_AUDIO_AOUT );
139 add_bool( "waveout-float32", 1, 0, FLOAT_TEXT, FLOAT_LONGTEXT, VLC_TRUE );
140 set_callbacks( Open, Close );
143 /*****************************************************************************
144 * aout_sys_t: waveOut audio output method descriptor
145 *****************************************************************************
146 * This structure is part of the audio output thread descriptor.
147 * It describes the waveOut specific properties of an audio device.
148 *****************************************************************************/
151 HWAVEOUT h_waveout; /* handle to waveout instance */
153 WAVEFORMATEXTENSIBLE waveformat; /* audio format */
155 WAVEHDR waveheader[FRAMES_NUM];
157 notification_thread_t *p_notif; /* WaveOutThread id */
162 byte_t *p_silence_buffer; /* buffer we use to play silence */
164 vlc_bool_t b_chan_reorder; /* do we need channel reordering */
165 int pi_chan_table[AOUT_CHAN_MAX];
168 static const uint32_t pi_channels_src[] =
169 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
170 AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT,
171 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
172 AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
173 static const uint32_t pi_channels_in[] =
174 { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
175 SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT,
176 SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
177 SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY, 0 };
178 static const uint32_t pi_channels_out[] =
179 { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
180 SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY,
181 SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
182 SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT, 0 };
184 /*****************************************************************************
185 * Open: open the audio device
186 *****************************************************************************
187 * This function opens and setups Win32 waveOut
188 *****************************************************************************/
189 static int Open( vlc_object_t *p_this )
191 aout_instance_t *p_aout = (aout_instance_t *)p_this;
195 /* Allocate structure */
196 p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
198 if( p_aout->output.p_sys == NULL )
200 msg_Err( p_aout, "out of memory" );
204 p_aout->output.pf_play = Play;
205 p_aout->b_die = VLC_FALSE;
207 if( var_Type( p_aout, "audio-device" ) == 0 )
212 if( var_Get( p_aout, "audio-device", &val ) < 0 )
214 /* Probe() has failed. */
215 free( p_aout->output.p_sys );
219 var_Create( p_aout, "waveout-float32", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
221 /* Open the device */
222 if( val.i_int == AOUT_VAR_SPDIF )
224 p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
226 if( OpenWaveOut( p_aout, VLC_FOURCC('s','p','d','i'),
227 p_aout->output.output.i_physical_channels,
228 aout_FormatNbChannels( &p_aout->output.output ),
229 p_aout->output.output.i_rate, VLC_FALSE )
232 msg_Err( p_aout, "cannot open waveout audio device" );
233 free( p_aout->output.p_sys );
237 /* Calculate the frame size in bytes */
238 p_aout->output.i_nb_samples = A52_FRAME_NB;
239 p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
240 p_aout->output.output.i_frame_length = A52_FRAME_NB;
241 p_aout->output.p_sys->i_buffer_size =
242 p_aout->output.output.i_bytes_per_frame;
244 aout_VolumeNoneInit( p_aout );
248 if( val.i_int == AOUT_VAR_5_1 )
250 p_aout->output.output.i_physical_channels
251 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
252 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
255 else if( val.i_int == AOUT_VAR_2F2R )
257 p_aout->output.output.i_physical_channels
258 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
259 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
261 else if( val.i_int == AOUT_VAR_MONO )
263 p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
267 p_aout->output.output.i_physical_channels
268 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
271 if( OpenWaveOutPCM( p_aout, &p_aout->output.output.i_format,
272 p_aout->output.output.i_physical_channels,
273 aout_FormatNbChannels( &p_aout->output.output ),
274 p_aout->output.output.i_rate, VLC_FALSE )
277 msg_Err( p_aout, "cannot open waveout audio device" );
278 free( p_aout->output.p_sys );
282 /* Calculate the frame size in bytes */
283 p_aout->output.i_nb_samples = FRAME_SIZE;
284 aout_FormatPrepare( &p_aout->output.output );
285 p_aout->output.p_sys->i_buffer_size = FRAME_SIZE *
286 p_aout->output.output.i_bytes_per_frame;
288 aout_VolumeSoftInit( p_aout );
292 waveOutReset( p_aout->output.p_sys->h_waveout );
294 /* Allocate silence buffer */
295 p_aout->output.p_sys->p_silence_buffer =
296 malloc( p_aout->output.p_sys->i_buffer_size );
297 if( p_aout->output.p_sys->p_silence_buffer == NULL )
299 free( p_aout->output.p_sys );
300 msg_Err( p_aout, "out of memory" );
304 /* Zero the buffer. WinCE doesn't have calloc(). */
305 memset( p_aout->output.p_sys->p_silence_buffer, 0,
306 p_aout->output.p_sys->i_buffer_size );
308 /* Now we need to setup our waveOut play notification structure */
309 p_aout->output.p_sys->p_notif =
310 vlc_object_create( p_aout, sizeof(notification_thread_t) );
311 p_aout->output.p_sys->p_notif->p_aout = p_aout;
312 p_aout->output.p_sys->event = CreateEvent( NULL, FALSE, FALSE, NULL );
314 /* Then launch the notification thread */
315 if( vlc_thread_create( p_aout->output.p_sys->p_notif,
316 "waveOut Notification Thread", WaveOutThread,
317 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
319 msg_Err( p_aout, "cannot create WaveOutThread" );
322 /* We need to kick off the playback in order to have the callback properly
324 for( i = 0; i < FRAMES_NUM; i++ )
326 p_aout->output.p_sys->waveheader[i].dwFlags = WHDR_DONE;
327 p_aout->output.p_sys->waveheader[i].dwUser = 0;
329 PlayWaveOut( p_aout, p_aout->output.p_sys->h_waveout,
330 &p_aout->output.p_sys->waveheader[0], NULL );
335 /*****************************************************************************
336 * Probe: probe the audio device for available formats and channels
337 *****************************************************************************/
338 static void Probe( aout_instance_t * p_aout )
340 vlc_value_t val, text;
342 unsigned int i_physical_channels;
344 var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
345 text.psz_string = _("Audio Device");
346 var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
348 /* Test for 5.1 support */
349 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
350 AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
351 AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE;
352 if( p_aout->output.output.i_physical_channels == i_physical_channels )
354 if( OpenWaveOutPCM( p_aout, &i_format,
355 i_physical_channels, 6,
356 p_aout->output.output.i_rate, VLC_TRUE )
359 val.i_int = AOUT_VAR_5_1;
360 text.psz_string = N_("5.1");
361 var_Change( p_aout, "audio-device",
362 VLC_VAR_ADDCHOICE, &val, &text );
363 msg_Dbg( p_aout, "device supports 5.1 channels" );
367 /* Test for 2 Front 2 Rear support */
368 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
369 AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
370 if( ( p_aout->output.output.i_physical_channels & i_physical_channels )
371 == i_physical_channels )
373 if( OpenWaveOutPCM( p_aout, &i_format,
374 i_physical_channels, 4,
375 p_aout->output.output.i_rate, VLC_TRUE )
378 val.i_int = AOUT_VAR_2F2R;
379 text.psz_string = N_("2 Front 2 Rear");
380 var_Change( p_aout, "audio-device",
381 VLC_VAR_ADDCHOICE, &val, &text );
382 msg_Dbg( p_aout, "device supports 4 channels" );
386 /* Test for stereo support */
387 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
388 if( OpenWaveOutPCM( p_aout, &i_format,
389 i_physical_channels, 2,
390 p_aout->output.output.i_rate, VLC_TRUE )
393 val.i_int = AOUT_VAR_STEREO;
394 text.psz_string = N_("Stereo");
395 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
396 msg_Dbg( p_aout, "device supports 2 channels" );
399 /* Test for mono support */
400 i_physical_channels = AOUT_CHAN_CENTER;
401 if( OpenWaveOutPCM( p_aout, &i_format,
402 i_physical_channels, 1,
403 p_aout->output.output.i_rate, VLC_TRUE )
406 val.i_int = AOUT_VAR_MONO;
407 text.psz_string = N_("Mono");
408 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
409 msg_Dbg( p_aout, "device supports 1 channel" );
412 /* Test for SPDIF support */
413 if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
415 if( OpenWaveOut( p_aout, VLC_FOURCC('s','p','d','i'),
416 p_aout->output.output.i_physical_channels,
417 aout_FormatNbChannels( &p_aout->output.output ),
418 p_aout->output.output.i_rate, VLC_TRUE )
421 msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
422 val.i_int = AOUT_VAR_SPDIF;
423 text.psz_string = N_("A/52 over S/PDIF");
424 var_Change( p_aout, "audio-device",
425 VLC_VAR_ADDCHOICE, &val, &text );
426 if( config_GetInt( p_aout, "spdif" ) )
427 var_Set( p_aout, "audio-device", val );
431 var_Change( p_aout, "audio-device", VLC_VAR_CHOICESCOUNT, &val, NULL );
434 /* Probe() has failed. */
435 var_Destroy( p_aout, "audio-device" );
439 var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
441 val.b_bool = VLC_TRUE;
442 var_Set( p_aout, "intf-change", val );
445 /*****************************************************************************
446 * Play: play a sound buffer
447 *****************************************************************************
448 * This doesn't actually play the buffer. This just stores the buffer so it
449 * can be played by the callback thread.
450 *****************************************************************************/
451 static void Play( aout_instance_t *_p_aout )
455 /*****************************************************************************
456 * Close: close the audio device
457 *****************************************************************************/
458 static void Close( vlc_object_t *p_this )
460 aout_instance_t *p_aout = (aout_instance_t *)p_this;
461 aout_sys_t *p_sys = p_aout->output.p_sys;
463 /* Before calling waveOutClose we must reset the device */
464 p_aout->b_die = VLC_TRUE;
466 waveOutReset( p_sys->h_waveout );
468 /* wake up the audio thread */
469 SetEvent( p_sys->event );
470 vlc_thread_join( p_sys->p_notif );
471 vlc_object_destroy( p_sys->p_notif );
472 CloseHandle( p_sys->event );
474 /* Close the device */
475 if( waveOutClose( p_sys->h_waveout ) != MMSYSERR_NOERROR )
477 msg_Err( p_aout, "waveOutClose failed" );
480 free( p_sys->p_silence_buffer );
484 /*****************************************************************************
485 * OpenWaveOut: open the waveout sound device
486 ****************************************************************************/
487 static int OpenWaveOut( aout_instance_t *p_aout, int i_format,
488 int i_channels, int i_nb_channels, int i_rate,
494 /* Set sound format */
496 #define waveformat p_aout->output.p_sys->waveformat
498 waveformat.dwChannelMask = 0;
499 for( i = 0; i < sizeof(pi_channels_src)/sizeof(uint32_t); i++ )
501 if( i_channels & pi_channels_src[i] )
502 waveformat.dwChannelMask |= pi_channels_in[i];
507 case VLC_FOURCC('s','p','d','i'):
509 /* To prevent channel re-ordering */
510 waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
511 waveformat.Format.wBitsPerSample = 16;
512 waveformat.Samples.wValidBitsPerSample =
513 waveformat.Format.wBitsPerSample;
514 waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
515 waveformat.SubFormat = __KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
518 case VLC_FOURCC('f','l','3','2'):
519 waveformat.Format.wBitsPerSample = sizeof(float) * 8;
520 waveformat.Samples.wValidBitsPerSample =
521 waveformat.Format.wBitsPerSample;
522 waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
523 waveformat.SubFormat = __KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
526 case VLC_FOURCC('s','1','6','l'):
527 waveformat.Format.wBitsPerSample = 16;
528 waveformat.Samples.wValidBitsPerSample =
529 waveformat.Format.wBitsPerSample;
530 waveformat.Format.wFormatTag = WAVE_FORMAT_PCM;
531 waveformat.SubFormat = __KSDATAFORMAT_SUBTYPE_PCM;
535 waveformat.Format.nChannels = i_nb_channels;
536 waveformat.Format.nSamplesPerSec = i_rate;
537 waveformat.Format.nBlockAlign =
538 waveformat.Format.wBitsPerSample / 8 * i_nb_channels;
539 waveformat.Format.nAvgBytesPerSec =
540 waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign;
542 /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */
543 if( i_nb_channels <= 2 )
545 waveformat.Format.cbSize = 0;
549 waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
550 waveformat.Format.cbSize =
551 sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
554 /* Open the device */
555 result = waveOutOpen( &p_aout->output.p_sys->h_waveout, WAVE_MAPPER,
556 (WAVEFORMATEX *)&waveformat,
557 (DWORD_PTR)WaveOutCallback, (DWORD_PTR)p_aout,
558 CALLBACK_FUNCTION | (b_probe?WAVE_FORMAT_QUERY:0) );
559 if( result == WAVERR_BADFORMAT )
561 msg_Warn( p_aout, "waveOutOpen failed WAVERR_BADFORMAT" );
564 if( result == MMSYSERR_ALLOCATED )
566 msg_Warn( p_aout, "waveOutOpen failed WAVERR_ALLOCATED" );
569 if( result != MMSYSERR_NOERROR )
571 msg_Warn( p_aout, "waveOutOpen failed" );
575 p_aout->output.p_sys->b_chan_reorder =
576 aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
577 waveformat.dwChannelMask, i_nb_channels,
578 p_aout->output.p_sys->pi_chan_table );
580 if( p_aout->output.p_sys->b_chan_reorder )
582 msg_Dbg( p_aout, "channel reordering needed" );
591 /*****************************************************************************
592 * OpenWaveOutPCM: open a PCM waveout sound device
593 ****************************************************************************/
594 static int OpenWaveOutPCM( aout_instance_t *p_aout, int *i_format,
595 int i_channels, int i_nb_channels, int i_rate,
600 var_Get( p_aout, "waveout-float32", &val );
602 if( !val.b_bool || OpenWaveOut( p_aout, VLC_FOURCC('f','l','3','2'),
603 i_channels, i_nb_channels, i_rate, b_probe )
606 if ( OpenWaveOut( p_aout, VLC_FOURCC('s','1','6','l'),
607 i_channels, i_nb_channels, i_rate, b_probe )
614 *i_format = VLC_FOURCC('s','1','6','l');
620 *i_format = VLC_FOURCC('f','l','3','2');
625 /*****************************************************************************
626 * PlayWaveOut: play a buffer through the WaveOut device
627 *****************************************************************************/
628 static int PlayWaveOut( aout_instance_t *p_aout, HWAVEOUT h_waveout,
629 WAVEHDR *p_waveheader, aout_buffer_t *p_buffer )
633 /* Prepare the buffer */
634 if( p_buffer != NULL )
635 p_waveheader->lpData = p_buffer->p_buffer;
637 /* Use silence buffer instead */
638 p_waveheader->lpData = p_aout->output.p_sys->p_silence_buffer;
640 p_waveheader->dwUser = p_buffer ? (DWORD_PTR)p_buffer : (DWORD_PTR)1;
641 p_waveheader->dwBufferLength = p_aout->output.p_sys->i_buffer_size;
642 p_waveheader->dwFlags = 0;
644 result = waveOutPrepareHeader( h_waveout, p_waveheader, sizeof(WAVEHDR) );
645 if( result != MMSYSERR_NOERROR )
647 msg_Err( p_aout, "waveOutPrepareHeader failed" );
651 /* Send the buffer to the waveOut queue */
652 result = waveOutWrite( h_waveout, p_waveheader, sizeof(WAVEHDR) );
653 if( result != MMSYSERR_NOERROR )
655 msg_Err( p_aout, "waveOutWrite failed" );
662 /*****************************************************************************
663 * WaveOutCallback: what to do once WaveOut has played its sound samples
664 *****************************************************************************/
665 static void CALLBACK WaveOutCallback( HWAVEOUT h_waveout, UINT uMsg,
667 DWORD dwParam1, DWORD dwParam2 )
669 aout_instance_t *p_aout = (aout_instance_t *)_p_aout;
670 int i, i_queued_frames = 0;
672 if( uMsg != WOM_DONE ) return;
674 if( p_aout->b_die ) return;
676 /* Find out the current latency */
677 for( i = 0; i < FRAMES_NUM; i++ )
679 /* Check if frame buf is available */
680 if( !(p_aout->output.p_sys->waveheader[i].dwFlags & WHDR_DONE) )
686 /* Don't wake up the thread too much */
687 if( i_queued_frames < FRAMES_NUM / 2 )
688 SetEvent( p_aout->output.p_sys->event );
691 /*****************************************************************************
692 * WaveOutThread: this thread will capture play notification events.
693 *****************************************************************************
694 * We use this thread to feed new audio samples to the sound card because
695 * we are not authorized to use waveOutWrite() directly in the waveout
697 *****************************************************************************/
698 static void WaveOutThread( notification_thread_t *p_notif )
700 aout_instance_t *p_aout = p_notif->p_aout;
701 aout_sys_t *p_sys = p_aout->output.p_sys;
702 aout_buffer_t *p_buffer = NULL;
703 WAVEHDR *p_waveheader = p_sys->waveheader;
704 int i, i_queued_frames;
707 /* We don't want any resampling when using S/PDIF */
708 b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i');
712 WaitForSingleObject( p_sys->event, INFINITE );
714 /* Cleanup and find out the current latency */
716 for( i = 0; i < FRAMES_NUM; i++ )
718 if( (p_waveheader[i].dwFlags & WHDR_DONE) &&
719 p_waveheader[i].dwUser )
721 /* Unprepare and free the buffers which has just been played */
722 waveOutUnprepareHeader( p_sys->h_waveout, &p_waveheader[i],
725 if( p_waveheader[i].dwUser != 1 )
726 aout_BufferFree( (aout_buffer_t *)p_waveheader[i].dwUser );
728 p_waveheader[i].dwUser = 0;
731 /* Check if frame buf is available */
732 if( !(p_waveheader[i].dwFlags & WHDR_DONE) )
738 if( p_aout->b_die ) return;
740 /* Try to fill in as many frame buffers as possible */
741 for( i = 0; i < FRAMES_NUM; i++ )
743 /* Check if frame buf is available */
744 if( p_waveheader[i].dwFlags & WHDR_DONE )
746 /* Take into account the latency */
747 p_buffer = aout_OutputNextBuffer( p_aout,
748 mdate() + 1000000 * i_queued_frames /
749 p_aout->output.output.i_rate * p_aout->output.i_nb_samples,
752 if( !p_buffer && i_queued_frames )
754 /* We aren't late so no need to play a blank sample */
758 /* Do the channel reordering */
759 if( p_buffer && p_sys->b_chan_reorder )
761 aout_ChannelReorder( p_buffer->p_buffer,
762 p_buffer->i_nb_bytes,
763 p_sys->waveformat.Format.nChannels,
764 p_sys->pi_chan_table,
765 p_sys->waveformat.Format.wBitsPerSample );
768 PlayWaveOut( p_aout, p_sys->h_waveout,
769 &p_waveheader[i], p_buffer );