1 /*****************************************************************************
2 * waveout.c : Windows waveOut plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2001 the VideoLAN team
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 4096 /* 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 static int VolumeInfos( aout_instance_t *, audio_volume_t * );
127 static int VolumeGet( aout_instance_t *, audio_volume_t * );
128 static int VolumeSet( aout_instance_t *, audio_volume_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 );
255 if( val.i_int == AOUT_VAR_5_1 )
257 p_aout->output.output.i_physical_channels
258 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
259 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
262 else if( val.i_int == AOUT_VAR_2F2R )
264 p_aout->output.output.i_physical_channels
265 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
266 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
268 else if( val.i_int == AOUT_VAR_MONO )
270 p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
274 p_aout->output.output.i_physical_channels
275 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
278 if( OpenWaveOutPCM( p_aout, &p_aout->output.output.i_format,
279 p_aout->output.output.i_physical_channels,
280 aout_FormatNbChannels( &p_aout->output.output ),
281 p_aout->output.output.i_rate, VLC_FALSE )
284 msg_Err( p_aout, "cannot open waveout audio device" );
285 free( p_aout->output.p_sys );
289 /* Calculate the frame size in bytes */
290 p_aout->output.i_nb_samples = FRAME_SIZE;
291 aout_FormatPrepare( &p_aout->output.output );
292 p_aout->output.p_sys->i_buffer_size = FRAME_SIZE *
293 p_aout->output.output.i_bytes_per_frame;
295 aout_VolumeSoftInit( p_aout );
297 /* Check for hardware volume support */
298 if( waveOutGetDevCaps( (UINT_PTR)p_aout->output.p_sys->h_waveout,
299 &wocaps, sizeof(wocaps) ) == MMSYSERR_NOERROR &&
300 wocaps.dwSupport & WAVECAPS_VOLUME )
303 if( waveOutGetVolume( p_aout->output.p_sys->h_waveout, &i_dummy )
304 == MMSYSERR_NOERROR )
306 p_aout->output.pf_volume_infos = VolumeInfos;
307 p_aout->output.pf_volume_get = VolumeGet;
308 p_aout->output.pf_volume_set = VolumeSet;
314 waveOutReset( p_aout->output.p_sys->h_waveout );
316 /* Allocate silence buffer */
317 p_aout->output.p_sys->p_silence_buffer =
318 malloc( p_aout->output.p_sys->i_buffer_size );
319 if( p_aout->output.p_sys->p_silence_buffer == NULL )
321 free( p_aout->output.p_sys );
322 msg_Err( p_aout, "out of memory" );
326 /* Zero the buffer. WinCE doesn't have calloc(). */
327 memset( p_aout->output.p_sys->p_silence_buffer, 0,
328 p_aout->output.p_sys->i_buffer_size );
330 /* Now we need to setup our waveOut play notification structure */
331 p_aout->output.p_sys->p_notif =
332 vlc_object_create( p_aout, sizeof(notification_thread_t) );
333 p_aout->output.p_sys->p_notif->p_aout = p_aout;
334 p_aout->output.p_sys->event = CreateEvent( NULL, FALSE, FALSE, NULL );
336 /* Then launch the notification thread */
337 if( vlc_thread_create( p_aout->output.p_sys->p_notif,
338 "waveOut Notification Thread", WaveOutThread,
339 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
341 msg_Err( p_aout, "cannot create WaveOutThread" );
344 /* We need to kick off the playback in order to have the callback properly
346 for( i = 0; i < FRAMES_NUM; i++ )
348 p_aout->output.p_sys->waveheader[i].dwFlags = WHDR_DONE;
349 p_aout->output.p_sys->waveheader[i].dwUser = 0;
351 PlayWaveOut( p_aout, p_aout->output.p_sys->h_waveout,
352 &p_aout->output.p_sys->waveheader[0], NULL );
357 /*****************************************************************************
358 * Probe: probe the audio device for available formats and channels
359 *****************************************************************************/
360 static void Probe( aout_instance_t * p_aout )
362 vlc_value_t val, text;
364 unsigned int i_physical_channels;
366 var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
367 text.psz_string = _("Audio Device");
368 var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
370 /* Test for 5.1 support */
371 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
372 AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
373 AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE;
374 if( p_aout->output.output.i_physical_channels == i_physical_channels )
376 if( OpenWaveOutPCM( p_aout, &i_format,
377 i_physical_channels, 6,
378 p_aout->output.output.i_rate, VLC_TRUE )
381 val.i_int = AOUT_VAR_5_1;
382 text.psz_string = N_("5.1");
383 var_Change( p_aout, "audio-device",
384 VLC_VAR_ADDCHOICE, &val, &text );
385 msg_Dbg( p_aout, "device supports 5.1 channels" );
389 /* Test for 2 Front 2 Rear support */
390 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
391 AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
392 if( ( p_aout->output.output.i_physical_channels & i_physical_channels )
393 == i_physical_channels )
395 if( OpenWaveOutPCM( p_aout, &i_format,
396 i_physical_channels, 4,
397 p_aout->output.output.i_rate, VLC_TRUE )
400 val.i_int = AOUT_VAR_2F2R;
401 text.psz_string = N_("2 Front 2 Rear");
402 var_Change( p_aout, "audio-device",
403 VLC_VAR_ADDCHOICE, &val, &text );
404 msg_Dbg( p_aout, "device supports 4 channels" );
408 /* Test for stereo support */
409 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
410 if( OpenWaveOutPCM( p_aout, &i_format,
411 i_physical_channels, 2,
412 p_aout->output.output.i_rate, VLC_TRUE )
415 val.i_int = AOUT_VAR_STEREO;
416 text.psz_string = N_("Stereo");
417 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
418 msg_Dbg( p_aout, "device supports 2 channels" );
421 /* Test for mono support */
422 i_physical_channels = AOUT_CHAN_CENTER;
423 if( OpenWaveOutPCM( p_aout, &i_format,
424 i_physical_channels, 1,
425 p_aout->output.output.i_rate, VLC_TRUE )
428 val.i_int = AOUT_VAR_MONO;
429 text.psz_string = N_("Mono");
430 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
431 msg_Dbg( p_aout, "device supports 1 channel" );
434 /* Test for SPDIF support */
435 if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
437 if( OpenWaveOut( p_aout, VLC_FOURCC('s','p','d','i'),
438 p_aout->output.output.i_physical_channels,
439 aout_FormatNbChannels( &p_aout->output.output ),
440 p_aout->output.output.i_rate, VLC_TRUE )
443 msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
444 val.i_int = AOUT_VAR_SPDIF;
445 text.psz_string = N_("A/52 over S/PDIF");
446 var_Change( p_aout, "audio-device",
447 VLC_VAR_ADDCHOICE, &val, &text );
448 if( config_GetInt( p_aout, "spdif" ) )
449 var_Set( p_aout, "audio-device", val );
453 var_Change( p_aout, "audio-device", VLC_VAR_CHOICESCOUNT, &val, NULL );
456 /* Probe() has failed. */
457 var_Destroy( p_aout, "audio-device" );
461 var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
463 val.b_bool = VLC_TRUE;
464 var_Set( p_aout, "intf-change", val );
467 /*****************************************************************************
468 * Play: play a sound buffer
469 *****************************************************************************
470 * This doesn't actually play the buffer. This just stores the buffer so it
471 * can be played by the callback thread.
472 *****************************************************************************/
473 static void Play( aout_instance_t *_p_aout )
477 /*****************************************************************************
478 * Close: close the audio device
479 *****************************************************************************/
480 static void Close( vlc_object_t *p_this )
482 aout_instance_t *p_aout = (aout_instance_t *)p_this;
483 aout_sys_t *p_sys = p_aout->output.p_sys;
485 /* Before calling waveOutClose we must reset the device */
486 p_aout->b_die = VLC_TRUE;
488 waveOutReset( p_sys->h_waveout );
490 /* wake up the audio thread */
491 SetEvent( p_sys->event );
492 vlc_thread_join( p_sys->p_notif );
493 vlc_object_destroy( p_sys->p_notif );
494 CloseHandle( p_sys->event );
496 /* Close the device */
497 if( waveOutClose( p_sys->h_waveout ) != MMSYSERR_NOERROR )
499 msg_Err( p_aout, "waveOutClose failed" );
502 free( p_sys->p_silence_buffer );
506 /*****************************************************************************
507 * OpenWaveOut: open the waveout sound device
508 ****************************************************************************/
509 static int OpenWaveOut( aout_instance_t *p_aout, int i_format,
510 int i_channels, int i_nb_channels, int i_rate,
516 /* Set sound format */
518 #define waveformat p_aout->output.p_sys->waveformat
520 waveformat.dwChannelMask = 0;
521 for( i = 0; i < sizeof(pi_channels_src)/sizeof(uint32_t); i++ )
523 if( i_channels & pi_channels_src[i] )
524 waveformat.dwChannelMask |= pi_channels_in[i];
529 case VLC_FOURCC('s','p','d','i'):
531 /* To prevent channel re-ordering */
532 waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
533 waveformat.Format.wBitsPerSample = 16;
534 waveformat.Samples.wValidBitsPerSample =
535 waveformat.Format.wBitsPerSample;
536 waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
537 waveformat.SubFormat = __KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
540 case VLC_FOURCC('f','l','3','2'):
541 waveformat.Format.wBitsPerSample = sizeof(float) * 8;
542 waveformat.Samples.wValidBitsPerSample =
543 waveformat.Format.wBitsPerSample;
544 waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
545 waveformat.SubFormat = __KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
548 case VLC_FOURCC('s','1','6','l'):
549 waveformat.Format.wBitsPerSample = 16;
550 waveformat.Samples.wValidBitsPerSample =
551 waveformat.Format.wBitsPerSample;
552 waveformat.Format.wFormatTag = WAVE_FORMAT_PCM;
553 waveformat.SubFormat = __KSDATAFORMAT_SUBTYPE_PCM;
557 waveformat.Format.nChannels = i_nb_channels;
558 waveformat.Format.nSamplesPerSec = i_rate;
559 waveformat.Format.nBlockAlign =
560 waveformat.Format.wBitsPerSample / 8 * i_nb_channels;
561 waveformat.Format.nAvgBytesPerSec =
562 waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign;
564 /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */
565 if( i_nb_channels <= 2 )
567 waveformat.Format.cbSize = 0;
571 waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
572 waveformat.Format.cbSize =
573 sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
576 /* Open the device */
577 result = waveOutOpen( &p_aout->output.p_sys->h_waveout, WAVE_MAPPER,
578 (WAVEFORMATEX *)&waveformat,
579 (DWORD_PTR)WaveOutCallback, (DWORD_PTR)p_aout,
580 CALLBACK_FUNCTION | (b_probe?WAVE_FORMAT_QUERY:0) );
581 if( result == WAVERR_BADFORMAT )
583 msg_Warn( p_aout, "waveOutOpen failed WAVERR_BADFORMAT" );
586 if( result == MMSYSERR_ALLOCATED )
588 msg_Warn( p_aout, "waveOutOpen failed WAVERR_ALLOCATED" );
591 if( result != MMSYSERR_NOERROR )
593 msg_Warn( p_aout, "waveOutOpen failed" );
597 p_aout->output.p_sys->b_chan_reorder =
598 aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
599 waveformat.dwChannelMask, i_nb_channels,
600 p_aout->output.p_sys->pi_chan_table );
602 if( p_aout->output.p_sys->b_chan_reorder )
604 msg_Dbg( p_aout, "channel reordering needed" );
613 /*****************************************************************************
614 * OpenWaveOutPCM: open a PCM waveout sound device
615 ****************************************************************************/
616 static int OpenWaveOutPCM( aout_instance_t *p_aout, int *i_format,
617 int i_channels, int i_nb_channels, int i_rate,
622 var_Get( p_aout, "waveout-float32", &val );
624 if( !val.b_bool || OpenWaveOut( p_aout, VLC_FOURCC('f','l','3','2'),
625 i_channels, i_nb_channels, i_rate, b_probe )
628 if ( OpenWaveOut( p_aout, VLC_FOURCC('s','1','6','l'),
629 i_channels, i_nb_channels, i_rate, b_probe )
636 *i_format = VLC_FOURCC('s','1','6','l');
642 *i_format = VLC_FOURCC('f','l','3','2');
647 /*****************************************************************************
648 * PlayWaveOut: play a buffer through the WaveOut device
649 *****************************************************************************/
650 static int PlayWaveOut( aout_instance_t *p_aout, HWAVEOUT h_waveout,
651 WAVEHDR *p_waveheader, aout_buffer_t *p_buffer )
655 /* Prepare the buffer */
656 if( p_buffer != NULL )
657 p_waveheader->lpData = p_buffer->p_buffer;
659 /* Use silence buffer instead */
660 p_waveheader->lpData = p_aout->output.p_sys->p_silence_buffer;
662 p_waveheader->dwUser = p_buffer ? (DWORD_PTR)p_buffer : (DWORD_PTR)1;
663 p_waveheader->dwBufferLength = p_aout->output.p_sys->i_buffer_size;
664 p_waveheader->dwFlags = 0;
666 result = waveOutPrepareHeader( h_waveout, p_waveheader, sizeof(WAVEHDR) );
667 if( result != MMSYSERR_NOERROR )
669 msg_Err( p_aout, "waveOutPrepareHeader failed" );
673 /* Send the buffer to the waveOut queue */
674 result = waveOutWrite( h_waveout, p_waveheader, sizeof(WAVEHDR) );
675 if( result != MMSYSERR_NOERROR )
677 msg_Err( p_aout, "waveOutWrite failed" );
684 /*****************************************************************************
685 * WaveOutCallback: what to do once WaveOut has played its sound samples
686 *****************************************************************************/
687 static void CALLBACK WaveOutCallback( HWAVEOUT h_waveout, UINT uMsg,
689 DWORD dwParam1, DWORD dwParam2 )
691 aout_instance_t *p_aout = (aout_instance_t *)_p_aout;
692 int i, i_queued_frames = 0;
694 if( uMsg != WOM_DONE ) return;
696 if( p_aout->b_die ) return;
698 /* Find out the current latency */
699 for( i = 0; i < FRAMES_NUM; i++ )
701 /* Check if frame buf is available */
702 if( !(p_aout->output.p_sys->waveheader[i].dwFlags & WHDR_DONE) )
708 /* Don't wake up the thread too much */
709 if( i_queued_frames < FRAMES_NUM / 2 )
710 SetEvent( p_aout->output.p_sys->event );
713 /*****************************************************************************
714 * WaveOutThread: this thread will capture play notification events.
715 *****************************************************************************
716 * We use this thread to feed new audio samples to the sound card because
717 * we are not authorized to use waveOutWrite() directly in the waveout
719 *****************************************************************************/
720 static void WaveOutThread( notification_thread_t *p_notif )
722 aout_instance_t *p_aout = p_notif->p_aout;
723 aout_sys_t *p_sys = p_aout->output.p_sys;
724 aout_buffer_t *p_buffer = NULL;
725 WAVEHDR *p_waveheader = p_sys->waveheader;
726 int i, i_queued_frames;
729 /* We don't want any resampling when using S/PDIF */
730 b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i');
734 WaitForSingleObject( p_sys->event, INFINITE );
736 /* Cleanup and find out the current latency */
738 for( i = 0; i < FRAMES_NUM; i++ )
740 if( (p_waveheader[i].dwFlags & WHDR_DONE) &&
741 p_waveheader[i].dwUser )
743 /* Unprepare and free the buffers which has just been played */
744 waveOutUnprepareHeader( p_sys->h_waveout, &p_waveheader[i],
747 if( p_waveheader[i].dwUser != 1 )
748 aout_BufferFree( (aout_buffer_t *)p_waveheader[i].dwUser );
750 p_waveheader[i].dwUser = 0;
753 /* Check if frame buf is available */
754 if( !(p_waveheader[i].dwFlags & WHDR_DONE) )
760 if( p_aout->b_die ) return;
762 /* Try to fill in as many frame buffers as possible */
763 for( i = 0; i < FRAMES_NUM; i++ )
765 /* Check if frame buf is available */
766 if( p_waveheader[i].dwFlags & WHDR_DONE )
768 /* Take into account the latency */
769 p_buffer = aout_OutputNextBuffer( p_aout,
770 mdate() + 1000000 * i_queued_frames /
771 p_aout->output.output.i_rate * p_aout->output.i_nb_samples,
774 if( !p_buffer && i_queued_frames )
776 /* We aren't late so no need to play a blank sample */
780 /* Do the channel reordering */
781 if( p_buffer && p_sys->b_chan_reorder )
783 aout_ChannelReorder( p_buffer->p_buffer,
784 p_buffer->i_nb_bytes,
785 p_sys->waveformat.Format.nChannels,
786 p_sys->pi_chan_table,
787 p_sys->waveformat.Format.wBitsPerSample );
790 PlayWaveOut( p_aout, p_sys->h_waveout,
791 &p_waveheader[i], p_buffer );
799 static int VolumeInfos( aout_instance_t * p_aout, audio_volume_t * pi_soft )
801 *pi_soft = AOUT_VOLUME_MAX / 2;
805 static int VolumeGet( aout_instance_t * p_aout, audio_volume_t * pi_volume )
810 waveOutGetVolume( 0, &i_waveout_vol );
812 waveOutGetVolume( p_aout->output.p_sys->h_waveout, &i_waveout_vol );
815 i_waveout_vol &= 0xFFFF;
816 *pi_volume = p_aout->output.i_volume =
817 (i_waveout_vol * AOUT_VOLUME_MAX + 0xFFFF /*rounding*/) / 2 / 0xFFFF;
821 static int VolumeSet( aout_instance_t * p_aout, audio_volume_t i_volume )
823 unsigned long i_waveout_vol = i_volume * 0xFFFF * 2 / AOUT_VOLUME_MAX;
824 i_waveout_vol |= (i_waveout_vol << 16);
827 waveOutSetVolume( 0, i_waveout_vol );
829 waveOutSetVolume( p_aout->output.p_sys->h_waveout, i_waveout_vol );
832 p_aout->output.i_volume = i_volume;