1 /*****************************************************************************
2 * directx.c: Windows DirectX audio output method
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: directx.c,v 1.21 2003/06/11 18:20:38 gbazin Exp $
7 * Authors: Gildas Bazin <gbazin@netcourrier.com>
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 <errno.h> /* ENOMEM */
28 #include <fcntl.h> /* open(), O_WRONLY */
29 #include <string.h> /* strerror() */
31 #include <stdlib.h> /* calloc(), malloc(), free() */
35 #include "aout_internal.h"
41 #define FRAME_SIZE 2048 /* The size is in samples, not in bytes */
44 /* frame buffer status */
45 #define FRAME_QUEUED 0
48 /*****************************************************************************
50 * Defining them here allows us to get rid of the dxguid library during
52 *****************************************************************************/
54 DEFINE_GUID(IID_IDirectSoundNotify, 0xb0210783, 0x89cd, 0x11d0, 0xaf, 0x8, 0x0, 0xa0, 0xc9, 0x25, 0xcd, 0x16);
56 /*****************************************************************************
58 *****************************************************************************/
59 #ifndef WAVE_FORMAT_IEEE_FLOAT
60 # define WAVE_FORMAT_IEEE_FLOAT 0x0003
63 #ifndef WAVE_FORMAT_DOLBY_AC3_SPDIF
64 # define WAVE_FORMAT_DOLBY_AC3_SPDIF 0x0092
67 #ifndef WAVE_FORMAT_EXTENSIBLE
68 #define WAVE_FORMAT_EXTENSIBLE 0xFFFE
71 #ifndef SPEAKER_FRONT_LEFT
72 # define SPEAKER_FRONT_LEFT 0x1
73 # define SPEAKER_FRONT_RIGHT 0x2
74 # define SPEAKER_FRONT_CENTER 0x4
75 # define SPEAKER_LOW_FREQUENCY 0x8
76 # define SPEAKER_BACK_LEFT 0x10
77 # define SPEAKER_BACK_RIGHT 0x20
78 # define SPEAKER_FRONT_LEFT_OF_CENTER 0x40
79 # define SPEAKER_FRONT_RIGHT_OF_CENTER 0x80
80 # define SPEAKER_BACK_CENTER 0x100
81 # define SPEAKER_SIDE_LEFT 0x200
82 # define SPEAKER_SIDE_RIGHT 0x400
83 # define SPEAKER_TOP_CENTER 0x800
84 # define SPEAKER_TOP_FRONT_LEFT 0x1000
85 # define SPEAKER_TOP_FRONT_CENTER 0x2000
86 # define SPEAKER_TOP_FRONT_RIGHT 0x4000
87 # define SPEAKER_TOP_BACK_LEFT 0x8000
88 # define SPEAKER_TOP_BACK_CENTER 0x10000
89 # define SPEAKER_TOP_BACK_RIGHT 0x20000
90 # define SPEAKER_RESERVED 0x80000000
93 #ifndef DSSPEAKER_HEADPHONE
94 # define DSSPEAKER_HEADPHONE 0x00000001
96 #ifndef DSSPEAKER_MONO
97 # define DSSPEAKER_MONO 0x00000002
99 #ifndef DSSPEAKER_QUAD
100 # define DSSPEAKER_QUAD 0x00000003
102 #ifndef DSSPEAKER_STEREO
103 # define DSSPEAKER_STEREO 0x00000004
105 #ifndef DSSPEAKER_SURROUND
106 # define DSSPEAKER_SURROUND 0x00000005
108 #ifndef DSSPEAKER_5POINT1
109 # define DSSPEAKER_5POINT1 0x00000006
112 #ifndef _WAVEFORMATEXTENSIBLE_
116 WORD wValidBitsPerSample; /* bits of precision */
117 WORD wSamplesPerBlock; /* valid if wBitsPerSample==0 */
118 WORD wReserved; /* If neither applies, set to zero. */
120 DWORD dwChannelMask; /* which channels are */
121 /* present in stream */
123 } WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
126 DEFINE_GUID( _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, WAVE_FORMAT_IEEE_FLOAT, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
127 DEFINE_GUID( _KSDATAFORMAT_SUBTYPE_PCM, WAVE_FORMAT_PCM, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
128 DEFINE_GUID( _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF, WAVE_FORMAT_DOLBY_AC3_SPDIF, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
130 /*****************************************************************************
131 * notification_thread_t: DirectX event thread
132 *****************************************************************************/
133 typedef struct notification_thread_t
137 aout_instance_t * p_aout;
138 int i_frame_status[FRAMES_NUM]; /* status of each frame buffer */
139 DSBPOSITIONNOTIFY p_events[FRAMES_NUM]; /* play notification events */
140 int i_frame_size; /* Size in bytes of one frame */
144 } notification_thread_t;
146 /*****************************************************************************
147 * aout_sys_t: directx audio output method descriptor
148 *****************************************************************************
149 * This structure is part of the audio output thread descriptor.
150 * It describes the direct sound specific properties of an audio device.
151 *****************************************************************************/
154 HINSTANCE hdsound_dll; /* handle of the opened dsound dll */
155 LPDIRECTSOUND p_dsobject; /* main Direct Sound object */
156 LPDIRECTSOUNDBUFFER p_dsbuffer; /* the sound buffer we use (direct sound
157 * takes care of mixing all the
158 * secondary buffers into the primary) */
160 LPDIRECTSOUNDNOTIFY p_dsnotify; /* the position notify interface */
161 notification_thread_t *p_notif; /* DirectSoundThread id */
163 int b_playing; /* playing status */
165 int i_frame_size; /* Size in bytes of one frame */
167 vlc_bool_t b_chan_reorder; /* do we need channel reordering */
169 uint32_t i_channel_mask;
172 static const uint32_t pi_channels_in[] =
173 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
174 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
175 AOUT_CHAN_CENTER, AOUT_CHAN_LFE };
176 static const uint32_t pi_channels_out[] =
177 { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
178 SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
179 SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY };
180 static const uint32_t pi_channels_ordered[] =
181 { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT, SPEAKER_FRONT_CENTER,
182 SPEAKER_LOW_FREQUENCY,
183 SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT };
185 /*****************************************************************************
187 *****************************************************************************/
188 static int OpenAudio ( vlc_object_t * );
189 static void CloseAudio ( vlc_object_t * );
190 static void Play ( aout_instance_t * );
192 /* local functions */
193 static void Probe ( aout_instance_t * );
194 static int InitDirectSound ( aout_instance_t * );
195 static int CreateDSBuffer ( aout_instance_t *, int, int, int, int, int, vlc_bool_t );
196 static int CreateDSBufferPCM ( aout_instance_t *, int*, int, int, int, vlc_bool_t );
197 static void DestroyDSBuffer ( aout_instance_t * );
198 static void DirectSoundThread ( notification_thread_t * );
199 static int FillBuffer ( aout_instance_t *, int, aout_buffer_t * );
201 static void CheckReordering ( aout_instance_t *, int );
202 static void InterleaveFloat32 ( float *, float *, int *, int );
203 static void InterleaveS16 ( int16_t *, int16_t *, int *, int );
205 /*****************************************************************************
207 *****************************************************************************/
209 set_description( _("DirectX audio output") );
210 set_capability( "audio output", 100 );
211 add_shortcut( "directx" );
212 set_callbacks( OpenAudio, CloseAudio );
215 /*****************************************************************************
216 * OpenAudio: open the audio device
217 *****************************************************************************
218 * This function opens and setups Direct Sound.
219 *****************************************************************************/
220 static int OpenAudio( vlc_object_t *p_this )
222 aout_instance_t * p_aout = (aout_instance_t *)p_this;
226 msg_Dbg( p_aout, "OpenAudio" );
228 /* Allocate structure */
229 p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
230 if( p_aout->output.p_sys == NULL )
232 msg_Err( p_aout, "out of memory" );
236 /* Initialize some variables */
237 p_aout->output.p_sys->p_dsobject = NULL;
238 p_aout->output.p_sys->p_dsbuffer = NULL;
239 p_aout->output.p_sys->p_dsnotify = NULL;
240 p_aout->output.p_sys->p_notif = NULL;
241 p_aout->output.p_sys->b_playing = 0;
242 p_aout->output.p_sys->pi_chan_table = NULL;
244 p_aout->output.pf_play = Play;
245 aout_VolumeSoftInit( p_aout );
247 /* Initialise DirectSound */
248 if( InitDirectSound( p_aout ) )
250 msg_Err( p_aout, "cannot initialize DirectSound" );
254 if( var_Type( p_aout, "audio-device" ) == 0 )
259 if( var_Get( p_aout, "audio-device", &val ) < 0 )
261 /* Probe() has failed. */
265 /* Now we need to setup our DirectSound play notification structure */
266 p_aout->output.p_sys->p_notif =
267 vlc_object_create( p_aout, sizeof(notification_thread_t) );
268 p_aout->output.p_sys->p_notif->p_aout = p_aout;
270 /* Then create the notification events */
271 for( i = 0; i < FRAMES_NUM; i++ )
272 p_aout->output.p_sys->p_notif->p_events[i].hEventNotify =
273 CreateEvent( NULL, FALSE, FALSE, NULL );
275 /* Open the device */
276 if( val.i_int == AOUT_VAR_SPDIF )
278 p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
280 /* Calculate the frame size in bytes */
281 p_aout->output.i_nb_samples = A52_FRAME_NB;
282 p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
283 p_aout->output.output.i_frame_length = A52_FRAME_NB;
284 p_aout->output.p_sys->i_frame_size =
285 p_aout->output.output.i_bytes_per_frame;
287 if( CreateDSBuffer( p_aout, VLC_FOURCC('s','p','d','i'),
288 p_aout->output.output.i_physical_channels,
289 aout_FormatNbChannels( &p_aout->output.output ),
290 p_aout->output.output.i_rate,
291 p_aout->output.p_sys->i_frame_size, VLC_FALSE )
294 msg_Err( p_aout, "cannot open directx audio device" );
295 free( p_aout->output.p_sys );
299 aout_VolumeNoneInit( p_aout );
303 if( val.i_int == AOUT_VAR_5_1 )
305 p_aout->output.output.i_physical_channels
306 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
307 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
310 else if( val.i_int == AOUT_VAR_2F2R )
312 p_aout->output.output.i_physical_channels
313 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
314 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
316 else if( val.i_int == AOUT_VAR_MONO )
318 p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
322 p_aout->output.output.i_physical_channels
323 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
326 if( CreateDSBufferPCM( p_aout, &p_aout->output.output.i_format,
327 p_aout->output.output.i_physical_channels,
328 aout_FormatNbChannels( &p_aout->output.output ),
329 p_aout->output.output.i_rate, VLC_FALSE )
332 msg_Err( p_aout, "cannot open directx audio device" );
333 free( p_aout->output.p_sys );
337 /* Calculate the frame size in bytes */
338 p_aout->output.i_nb_samples = FRAME_SIZE;
339 aout_FormatPrepare( &p_aout->output.output );
340 p_aout->output.p_sys->i_frame_size =
341 FRAME_SIZE * p_aout->output.output.i_bytes_per_frame;
343 aout_VolumeSoftInit( p_aout );
346 /* then launch the notification thread */
347 msg_Dbg( p_aout, "creating DirectSoundThread" );
348 if( vlc_thread_create( p_aout->output.p_sys->p_notif,
349 "DirectSound Notification Thread",
351 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
353 msg_Err( p_aout, "cannot create DirectSoundThread" );
357 vlc_object_attach( p_aout->output.p_sys->p_notif, p_aout );
362 CloseAudio( VLC_OBJECT(p_aout) );
366 /*****************************************************************************
367 * Probe: probe the audio device for available formats and channels
368 *****************************************************************************/
369 static void Probe( aout_instance_t * p_aout )
371 vlc_value_t val, text;
373 unsigned int i_physical_channels;
374 DWORD ui_speaker_config;
376 var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
377 text.psz_string = _("Audio device");
378 var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
380 /* Test for 5.1 support */
381 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
382 AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
383 AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE;
384 if( p_aout->output.output.i_physical_channels == i_physical_channels )
386 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 6,
387 p_aout->output.output.i_rate, VLC_TRUE )
390 val.i_int = AOUT_VAR_5_1;
391 text.psz_string = N_("5.1");
392 var_Change( p_aout, "audio-device",
393 VLC_VAR_ADDCHOICE, &val, &text );
394 msg_Dbg( p_aout, "device supports 5.1 channels" );
398 /* Test for 2 Front 2 Rear support */
399 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
400 AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
401 if( ( p_aout->output.output.i_physical_channels & i_physical_channels )
402 == i_physical_channels )
404 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 4,
405 p_aout->output.output.i_rate, VLC_TRUE )
408 val.i_int = AOUT_VAR_2F2R;
409 text.psz_string = N_("2 Front 2 Rear");
410 var_Change( p_aout, "audio-device",
411 VLC_VAR_ADDCHOICE, &val, &text );
412 msg_Dbg( p_aout, "device supports 4 channels" );
416 /* Test for stereo support */
417 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
418 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 2,
419 p_aout->output.output.i_rate, VLC_TRUE )
422 val.i_int = AOUT_VAR_STEREO;
423 text.psz_string = N_("Stereo");
424 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
425 msg_Dbg( p_aout, "device supports 2 channels" );
428 /* Test for mono support */
429 i_physical_channels = AOUT_CHAN_CENTER;
430 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 1,
431 p_aout->output.output.i_rate, VLC_TRUE )
434 val.i_int = AOUT_VAR_MONO;
435 text.psz_string = N_("Mono");
436 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
437 msg_Dbg( p_aout, "device supports 1 channel" );
440 /* Check the speaker configuration to determine which channel config should
442 if FAILED( IDirectSound_GetSpeakerConfig( p_aout->output.p_sys->p_dsobject,
443 &ui_speaker_config ) )
445 ui_speaker_config = DSSPEAKER_STEREO;
447 switch( DSSPEAKER_CONFIG(ui_speaker_config) )
449 case DSSPEAKER_5POINT1:
450 val.i_int = AOUT_VAR_5_1;
453 val.i_int = AOUT_VAR_2F2R;
456 val.i_int = AOUT_VAR_MONO;
458 case DSSPEAKER_SURROUND:
459 case DSSPEAKER_STEREO:
461 val.i_int = AOUT_VAR_STEREO;
464 var_Set( p_aout, "audio-device", val );
466 /* Test for SPDIF support */
467 if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
469 if( CreateDSBuffer( p_aout, VLC_FOURCC('s','p','d','i'),
470 p_aout->output.output.i_physical_channels,
471 aout_FormatNbChannels( &p_aout->output.output ),
472 p_aout->output.output.i_rate,
473 AOUT_SPDIF_SIZE, VLC_TRUE )
476 msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
477 val.i_int = AOUT_VAR_SPDIF;
478 text.psz_string = N_("A/52 over S/PDIF");
479 var_Change( p_aout, "audio-device",
480 VLC_VAR_ADDCHOICE, &val, &text );
481 if( config_GetInt( p_aout, "spdif" ) )
482 var_Set( p_aout, "audio-device", val );
486 var_Change( p_aout, "audio-device", VLC_VAR_CHOICESCOUNT, &val, NULL );
489 /* Probe() has failed. */
490 var_Destroy( p_aout, "audio-device" );
494 var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
496 val.b_bool = VLC_TRUE;
497 var_Set( p_aout, "intf-change", val );
500 /*****************************************************************************
501 * Play: we'll start playing the directsound buffer here because at least here
502 * we know the first buffer has been put in the aout fifo and we also
504 *****************************************************************************/
505 static void Play( aout_instance_t *p_aout )
507 if( !p_aout->output.p_sys->b_playing )
509 aout_buffer_t *p_buffer;
511 p_aout->output.p_sys->b_playing = 1;
513 /* get the playing date of the first aout buffer */
514 p_aout->output.p_sys->p_notif->start_date =
515 aout_FifoFirstDate( p_aout, &p_aout->output.fifo );
517 /* fill in the first samples */
518 p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
519 FillBuffer( p_aout, 0, p_buffer );
521 /* wake up the audio output thread */
522 SetEvent( p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );
526 /*****************************************************************************
527 * CloseAudio: close the audio device
528 *****************************************************************************/
529 static void CloseAudio( vlc_object_t *p_this )
531 aout_instance_t * p_aout = (aout_instance_t *)p_this;
533 msg_Dbg( p_aout, "CloseAudio" );
535 /* kill the position notification thread, if any */
536 if( p_aout->output.p_sys->p_notif )
538 vlc_object_detach( p_aout->output.p_sys->p_notif );
539 if( p_aout->output.p_sys->p_notif->b_thread )
541 p_aout->output.p_sys->p_notif->b_die = 1;
543 if( !p_aout->output.p_sys->b_playing )
544 /* wake up the audio thread */
546 p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );
548 vlc_thread_join( p_aout->output.p_sys->p_notif );
550 vlc_object_destroy( p_aout->output.p_sys->p_notif );
553 /* release the secondary buffer */
554 DestroyDSBuffer( p_aout );
556 /* finally release the DirectSound object */
557 if( p_aout->output.p_sys->p_dsobject )
558 IDirectSound_Release( p_aout->output.p_sys->p_dsobject );
560 /* free DSOUND.DLL */
561 if( p_aout->output.p_sys->hdsound_dll )
562 FreeLibrary( p_aout->output.p_sys->hdsound_dll );
564 if( p_aout->output.p_sys->pi_chan_table )
565 free( p_aout->output.p_sys->pi_chan_table );
567 free( p_aout->output.p_sys );
570 /*****************************************************************************
571 * InitDirectSound: handle all the gory details of DirectSound initialisation
572 *****************************************************************************/
573 static int InitDirectSound( aout_instance_t *p_aout )
575 HRESULT (WINAPI *OurDirectSoundCreate)(LPGUID, LPDIRECTSOUND *, LPUNKNOWN);
577 p_aout->output.p_sys->hdsound_dll = LoadLibrary("DSOUND.DLL");
578 if( p_aout->output.p_sys->hdsound_dll == NULL )
580 msg_Warn( p_aout, "cannot open DSOUND.DLL" );
584 OurDirectSoundCreate = (void *)GetProcAddress(
585 p_aout->output.p_sys->hdsound_dll,
586 "DirectSoundCreate" );
587 if( OurDirectSoundCreate == NULL )
589 msg_Warn( p_aout, "GetProcAddress FAILED" );
593 /* Create the direct sound object */
594 if FAILED( OurDirectSoundCreate( NULL, &p_aout->output.p_sys->p_dsobject,
597 msg_Warn( p_aout, "cannot create a direct sound device" );
601 /* Set DirectSound Cooperative level, ie what control we want over Windows
602 * sound device. In our case, DSSCL_EXCLUSIVE means that we can modify the
603 * settings of the primary buffer, but also that only the sound of our
604 * application will be hearable when it will have the focus.
605 * !!! (this is not really working as intended yet because to set the
606 * cooperative level you need the window handle of your application, and
607 * I don't know of any easy way to get it. Especially since we might play
608 * sound without any video, and so what window handle should we use ???
609 * The hack for now is to use the Desktop window handle - it seems to be
611 if( IDirectSound_SetCooperativeLevel( p_aout->output.p_sys->p_dsobject,
615 msg_Warn( p_aout, "cannot set direct sound cooperative level" );
621 p_aout->output.p_sys->p_dsobject = NULL;
622 if( p_aout->output.p_sys->hdsound_dll )
624 FreeLibrary( p_aout->output.p_sys->hdsound_dll );
625 p_aout->output.p_sys->hdsound_dll = NULL;
631 /*****************************************************************************
632 * CreateDSBuffer: Creates a direct sound buffer of the required format.
633 *****************************************************************************
634 * This function creates the buffer we'll use to play audio.
635 * In DirectSound there are two kinds of buffers:
636 * - the primary buffer: which is the actual buffer that the soundcard plays
637 * - the secondary buffer(s): these buffers are the one actually used by
638 * applications and DirectSound takes care of mixing them into the primary.
640 * Once you create a secondary buffer, you cannot change its format anymore so
641 * you have to release the current one and create another.
642 *****************************************************************************/
643 static int CreateDSBuffer( aout_instance_t *p_aout, int i_format,
644 int i_channels, int i_nb_channels, int i_rate,
645 int i_bytes_per_frame, vlc_bool_t b_probe )
647 WAVEFORMATEXTENSIBLE waveformat;
648 DSBUFFERDESC dsbdesc;
651 /* First set the sound buffer format */
652 waveformat.dwChannelMask = 0;
653 for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
655 if( i_channels & pi_channels_in[i] )
656 waveformat.dwChannelMask |= pi_channels_out[i];
661 case VLC_FOURCC('s','p','d','i'):
663 /* To prevent channel re-ordering */
664 waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
665 waveformat.Format.wBitsPerSample = 16;
666 waveformat.Samples.wValidBitsPerSample =
667 waveformat.Format.wBitsPerSample;
668 waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
669 waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
672 case VLC_FOURCC('f','l','3','2'):
673 waveformat.Format.wBitsPerSample = sizeof(float) * 8;
674 waveformat.Samples.wValidBitsPerSample =
675 waveformat.Format.wBitsPerSample;
676 waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
677 waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
680 case VLC_FOURCC('s','1','6','l'):
681 waveformat.Format.wBitsPerSample = 16;
682 waveformat.Samples.wValidBitsPerSample =
683 waveformat.Format.wBitsPerSample;
684 waveformat.Format.wFormatTag = WAVE_FORMAT_PCM;
685 waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_PCM;
689 waveformat.Format.nChannels = i_nb_channels;
690 waveformat.Format.nSamplesPerSec = i_rate;
691 waveformat.Format.nBlockAlign =
692 waveformat.Format.wBitsPerSample / 8 * i_nb_channels;
693 waveformat.Format.nAvgBytesPerSec =
694 waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign;
696 /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */
697 if( i_nb_channels <= 2 )
699 waveformat.Format.cbSize = 0;
703 waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
704 waveformat.Format.cbSize =
705 sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
709 /* Then fill in the direct sound descriptor */
710 memset(&dsbdesc, 0, sizeof(DSBUFFERDESC));
711 dsbdesc.dwSize = sizeof(DSBUFFERDESC);
712 dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2/* Better position accuracy */
713 | DSBCAPS_CTRLPOSITIONNOTIFY /* We need notification */
714 | DSBCAPS_GLOBALFOCUS; /* Allows background playing */
715 dsbdesc.dwBufferBytes = FRAMES_NUM * i_bytes_per_frame; /* buffer size */
716 dsbdesc.lpwfxFormat = (WAVEFORMATEX *)&waveformat;
718 if FAILED( IDirectSound_CreateSoundBuffer(
719 p_aout->output.p_sys->p_dsobject, &dsbdesc,
720 &p_aout->output.p_sys->p_dsbuffer, NULL) )
725 /* Stop here if we were just probing */
728 IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
729 p_aout->output.p_sys->p_dsbuffer = NULL;
733 /* Backup the size of a frame */
734 p_aout->output.p_sys->p_notif->i_frame_size = i_bytes_per_frame;
736 /* Now the secondary buffer is created, we need to setup its position
738 for( i = 0; i < FRAMES_NUM; i++ )
740 p_aout->output.p_sys->p_notif->p_events[i].dwOffset = i *
741 p_aout->output.p_sys->p_notif->i_frame_size;
743 p_aout->output.p_sys->p_notif->i_frame_status[i] = FRAME_EMPTY;
746 /* Get the IDirectSoundNotify interface */
747 if FAILED( IDirectSoundBuffer_QueryInterface(
748 p_aout->output.p_sys->p_dsbuffer,
749 &IID_IDirectSoundNotify,
750 (LPVOID *)&p_aout->output.p_sys->p_dsnotify ) )
752 msg_Err( p_aout, "cannot get IDirectSoundNotify interface" );
756 if FAILED( IDirectSoundNotify_SetNotificationPositions(
757 p_aout->output.p_sys->p_dsnotify,
759 p_aout->output.p_sys->p_notif->p_events ) )
761 msg_Err( p_aout, "cannot set position notification" );
765 p_aout->output.p_sys->i_channel_mask = waveformat.dwChannelMask;
766 CheckReordering( p_aout, i_nb_channels );
771 DestroyDSBuffer( p_aout );
775 /*****************************************************************************
776 * CreateDSBufferPCM: creates a PCM direct sound buffer.
777 *****************************************************************************
778 * We first try to create a WAVE_FORMAT_IEEE_FLOAT buffer if supported by
779 * the hardware, otherwise we create a WAVE_FORMAT_PCM buffer.
780 ****************************************************************************/
781 static int CreateDSBufferPCM( aout_instance_t *p_aout, int *i_format,
782 int i_channels, int i_nb_channels, int i_rate,
785 if( CreateDSBuffer( p_aout, VLC_FOURCC('f','l','3','2'),
786 i_channels, i_nb_channels, i_rate,
787 FRAME_SIZE * 4 * i_nb_channels, b_probe )
790 if ( CreateDSBuffer( p_aout, VLC_FOURCC('s','1','6','l'),
791 i_channels, i_nb_channels, i_rate,
792 FRAME_SIZE * 2 * i_nb_channels, b_probe )
799 *i_format = VLC_FOURCC('s','1','6','l');
805 *i_format = VLC_FOURCC('f','l','3','2');
810 /*****************************************************************************
812 *****************************************************************************
813 * This function destroys the secondary buffer.
814 *****************************************************************************/
815 static void DestroyDSBuffer( aout_instance_t *p_aout )
817 if( p_aout->output.p_sys->p_dsnotify )
819 IDirectSoundNotify_Release( p_aout->output.p_sys->p_dsnotify );
820 p_aout->output.p_sys->p_dsnotify = NULL;
823 if( p_aout->output.p_sys->p_dsbuffer )
825 IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
826 p_aout->output.p_sys->p_dsbuffer = NULL;
830 /*****************************************************************************
831 * FillBuffer: Fill in one of the direct sound frame buffers.
832 *****************************************************************************
833 * Returns VLC_SUCCESS on success.
834 *****************************************************************************/
835 static int FillBuffer( aout_instance_t *p_aout, int i_frame,
836 aout_buffer_t *p_buffer )
838 notification_thread_t *p_notif = p_aout->output.p_sys->p_notif;
839 void *p_write_position, *p_wrap_around;
840 long l_bytes1, l_bytes2;
843 /* Before copying anything, we have to lock the buffer */
844 dsresult = IDirectSoundBuffer_Lock(
845 p_aout->output.p_sys->p_dsbuffer, /* DS buffer */
846 i_frame * p_notif->i_frame_size, /* Start offset */
847 p_notif->i_frame_size, /* Number of bytes */
848 &p_write_position, /* Address of lock start */
849 &l_bytes1, /* Count of bytes locked before wrap around */
850 &p_wrap_around, /* Buffer adress (if wrap around) */
851 &l_bytes2, /* Count of bytes after wrap around */
853 if( dsresult == DSERR_BUFFERLOST )
855 IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
856 dsresult = IDirectSoundBuffer_Lock(
857 p_aout->output.p_sys->p_dsbuffer,
858 i_frame * p_notif->i_frame_size,
859 p_notif->i_frame_size,
866 if( dsresult != DS_OK )
868 msg_Warn( p_notif, "cannot lock buffer" );
869 if( p_buffer ) aout_BufferFree( p_buffer );
873 if( p_buffer == NULL )
875 memset( p_write_position, 0, l_bytes1 );
877 else if( p_aout->output.p_sys->b_chan_reorder )
879 /* Do the channel reordering here */
881 if( p_aout->output.output.i_format == VLC_FOURCC('s','1','6','l') )
882 InterleaveS16( (int16_t *)p_buffer->p_buffer,
883 (int16_t *)p_write_position,
884 p_aout->output.p_sys->pi_chan_table,
885 aout_FormatNbChannels( &p_aout->output.output ) );
887 InterleaveFloat32( (float *)p_buffer->p_buffer,
888 (float *)p_write_position,
889 p_aout->output.p_sys->pi_chan_table,
890 aout_FormatNbChannels( &p_aout->output.output ) );
892 aout_BufferFree( p_buffer );
896 p_aout->p_vlc->pf_memcpy( p_write_position, p_buffer->p_buffer,
898 aout_BufferFree( p_buffer );
901 /* Now the data has been copied, unlock the buffer */
902 IDirectSoundBuffer_Unlock( p_aout->output.p_sys->p_dsbuffer,
903 p_write_position, l_bytes1,
904 p_wrap_around, l_bytes2 );
909 /*****************************************************************************
910 * DirectSoundThread: this thread will capture play notification events.
911 *****************************************************************************
912 * We use this thread to emulate a callback mechanism. The thread probes for
913 * event notification and fills up the DS secondary buffer when needed.
914 *****************************************************************************/
915 static void DirectSoundThread( notification_thread_t *p_notif )
917 HANDLE notification_events[FRAMES_NUM];
919 aout_instance_t *p_aout = p_notif->p_aout;
920 int i, i_which_frame, i_last_frame, i_next_frame;
924 for( i = 0; i < FRAMES_NUM; i++ )
925 notification_events[i] = p_notif->p_events[i].hEventNotify;
927 /* We don't want any resampling when using S/PDIF output */
928 b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i');
930 /* Tell the main thread that we are ready */
931 vlc_thread_ready( p_notif );
933 msg_Dbg( p_notif, "DirectSoundThread ready" );
935 /* Wait here until Play() is called */
936 WaitForSingleObject( notification_events[0], INFINITE );
938 if( !p_notif->b_die )
940 mwait( p_notif->start_date - AOUT_PTS_TOLERANCE / 2 );
942 /* start playing the buffer */
943 dsresult = IDirectSoundBuffer_Play( p_aout->output.p_sys->p_dsbuffer,
946 DSBPLAY_LOOPING ); /* Flags */
947 if( dsresult == DSERR_BUFFERLOST )
949 IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
950 dsresult = IDirectSoundBuffer_Play(
951 p_aout->output.p_sys->p_dsbuffer,
954 DSBPLAY_LOOPING ); /* Flags */
956 if( dsresult != DS_OK )
958 msg_Err( p_aout, "cannot start playing buffer" );
962 while( !p_notif->b_die )
964 aout_buffer_t *p_buffer;
967 /* wait for the position notification */
968 i_which_frame = WaitForMultipleObjects( FRAMES_NUM,
969 notification_events, 0,
970 INFINITE ) - WAIT_OBJECT_0;
977 /* We take into account the current latency */
978 if SUCCEEDED( IDirectSoundBuffer_GetCurrentPosition(
979 p_aout->output.p_sys->p_dsbuffer,
982 if( l_latency > (i_which_frame * FRAME_SIZE)
983 && l_latency < ((i_which_frame+1) * FRAME_SIZE) )
985 l_latency = - ( l_latency /
986 p_aout->output.output.i_bytes_per_frame %
991 l_latency = FRAME_SIZE - ( l_latency /
992 p_aout->output.output.i_bytes_per_frame %
1001 /* Mark last frame as empty */
1002 i_last_frame = (i_which_frame + FRAMES_NUM -1) % FRAMES_NUM;
1003 i_next_frame = (i_which_frame + 1) % FRAMES_NUM;
1004 p_notif->i_frame_status[i_last_frame] = FRAME_EMPTY;
1006 /* Try to fill in as many frame buffers as possible */
1007 for( i = i_next_frame; (i % FRAMES_NUM) != i_which_frame; i++ )
1010 /* Check if frame buf is already filled */
1011 if( p_notif->i_frame_status[i % FRAMES_NUM] == FRAME_QUEUED )
1014 p_buffer = aout_OutputNextBuffer( p_aout,
1015 mtime + 1000000 / p_aout->output.output.i_rate *
1016 ((i - i_next_frame + 1) * FRAME_SIZE + l_latency), b_sleek );
1018 /* If there is no audio data available and we have some buffered
1019 * already, then just wait for the next time */
1020 if( !p_buffer && (i != i_next_frame) )
1022 //msg_Err( p_aout, "only %i frame buffers filled!",
1023 // i - i_next_frame );
1027 if( FillBuffer( p_aout, (i%FRAMES_NUM), p_buffer )
1031 /* Mark the frame buffer as QUEUED */
1032 p_notif->i_frame_status[i%FRAMES_NUM] = FRAME_QUEUED;
1037 /* make sure the buffer isn't playing */
1038 IDirectSoundBuffer_Stop( p_aout->output.p_sys->p_dsbuffer );
1040 /* free the events */
1041 for( i = 0; i < FRAMES_NUM; i++ )
1042 CloseHandle( notification_events[i] );
1044 msg_Dbg( p_notif, "DirectSoundThread exiting" );
1047 /*****************************************************************************
1048 * CheckReordering: Check if we need to do some channel re-ordering (the ac3
1049 * channel order is different from the one chosen by
1051 *****************************************************************************/
1052 static void CheckReordering( aout_instance_t *p_aout, int i_nb_channels )
1056 #define i_channel_mask p_aout->output.p_sys->i_channel_mask
1057 #define pi_chan_table p_aout->output.p_sys->pi_chan_table
1059 p_aout->output.p_sys->b_chan_reorder = VLC_FALSE;
1061 pi_chan_table = malloc( i_nb_channels * sizeof(int) );
1062 if( !pi_chan_table )
1068 i < (int)(sizeof(pi_channels_out)/sizeof(uint32_t)); i++ )
1070 if( i_channel_mask & pi_channels_out[i] )
1073 pi_channels_out[i] != pi_channels_ordered[k]; k++ )
1075 if( i_channel_mask & pi_channels_ordered[k] )
1081 pi_chan_table[j] = l;
1087 for( i = 0; i < i_nb_channels; i++ )
1089 if( pi_chan_table[i] != i )
1091 p_aout->output.p_sys->b_chan_reorder = VLC_TRUE;
1095 if( p_aout->output.p_sys->b_chan_reorder )
1097 msg_Dbg( p_aout, "channel reordering needed" );
1100 #undef pi_chan_table
1104 /*****************************************************************************
1105 * InterleaveFloat32/S16: change the channel order to the Microsoft one.
1106 *****************************************************************************/
1107 static void InterleaveFloat32( float *p_buf, float *p_buf_out,
1108 int *pi_chan_table, int i_nb_channels )
1112 for( i = 0; i < FRAME_SIZE; i++ )
1114 for( j = 0; j < i_nb_channels; j++ )
1116 p_buf_out[i*i_nb_channels + pi_chan_table[j]] =
1117 p_buf[i*i_nb_channels + j];
1122 static void InterleaveS16( int16_t *p_buf, int16_t *p_buf_out,
1123 int *pi_chan_table, int i_nb_channels )
1127 for( i = 0; i < FRAME_SIZE; i++ )
1129 for( j = 0; j < i_nb_channels; j++ )
1131 p_buf_out[ i*i_nb_channels + pi_chan_table[j]] =
1132 p_buf[i*i_nb_channels + j];