1 /*****************************************************************************
2 * directx.c: Windows DirectX audio output method
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: directx.c,v 1.23 2003/08/14 11:47:32 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_3F2R )
312 p_aout->output.output.i_physical_channels
313 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
314 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
316 else if( val.i_int == AOUT_VAR_2F2R )
318 p_aout->output.output.i_physical_channels
319 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
320 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
322 else if( val.i_int == AOUT_VAR_MONO )
324 p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
328 p_aout->output.output.i_physical_channels
329 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
332 if( CreateDSBufferPCM( p_aout, &p_aout->output.output.i_format,
333 p_aout->output.output.i_physical_channels,
334 aout_FormatNbChannels( &p_aout->output.output ),
335 p_aout->output.output.i_rate, VLC_FALSE )
338 msg_Err( p_aout, "cannot open directx audio device" );
339 free( p_aout->output.p_sys );
343 /* Calculate the frame size in bytes */
344 p_aout->output.i_nb_samples = FRAME_SIZE;
345 aout_FormatPrepare( &p_aout->output.output );
346 p_aout->output.p_sys->i_frame_size =
347 FRAME_SIZE * p_aout->output.output.i_bytes_per_frame;
349 aout_VolumeSoftInit( p_aout );
352 /* then launch the notification thread */
353 msg_Dbg( p_aout, "creating DirectSoundThread" );
354 if( vlc_thread_create( p_aout->output.p_sys->p_notif,
355 "DirectSound Notification Thread",
357 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
359 msg_Err( p_aout, "cannot create DirectSoundThread" );
363 vlc_object_attach( p_aout->output.p_sys->p_notif, p_aout );
368 CloseAudio( VLC_OBJECT(p_aout) );
372 /*****************************************************************************
373 * Probe: probe the audio device for available formats and channels
374 *****************************************************************************/
375 static void Probe( aout_instance_t * p_aout )
377 vlc_value_t val, text;
379 unsigned int i_physical_channels;
380 DWORD ui_speaker_config;
382 var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
383 text.psz_string = _("Audio device");
384 var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
386 /* Test for 5.1 support */
387 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
388 AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
389 AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE;
390 if( p_aout->output.output.i_physical_channels == i_physical_channels )
392 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 6,
393 p_aout->output.output.i_rate, VLC_TRUE )
396 val.i_int = AOUT_VAR_5_1;
397 text.psz_string = N_("5.1");
398 var_Change( p_aout, "audio-device",
399 VLC_VAR_ADDCHOICE, &val, &text );
400 msg_Dbg( p_aout, "device supports 5.1 channels" );
404 /* Test for 3 Front 2 Rear support */
405 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
406 AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
408 if( p_aout->output.output.i_physical_channels == i_physical_channels )
410 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 5,
411 p_aout->output.output.i_rate, VLC_TRUE )
414 val.i_int = AOUT_VAR_3F2R;
415 text.psz_string = N_("3 Front 2 Rear");
416 var_Change( p_aout, "audio-device",
417 VLC_VAR_ADDCHOICE, &val, &text );
418 msg_Dbg( p_aout, "device supports 5 channels" );
422 /* Test for 2 Front 2 Rear support */
423 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
424 AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
425 if( ( p_aout->output.output.i_physical_channels & i_physical_channels )
426 == i_physical_channels )
428 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 4,
429 p_aout->output.output.i_rate, VLC_TRUE )
432 val.i_int = AOUT_VAR_2F2R;
433 text.psz_string = N_("2 Front 2 Rear");
434 var_Change( p_aout, "audio-device",
435 VLC_VAR_ADDCHOICE, &val, &text );
436 msg_Dbg( p_aout, "device supports 4 channels" );
440 /* Test for stereo support */
441 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
442 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 2,
443 p_aout->output.output.i_rate, VLC_TRUE )
446 val.i_int = AOUT_VAR_STEREO;
447 text.psz_string = N_("Stereo");
448 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
449 var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
450 msg_Dbg( p_aout, "device supports 2 channels" );
453 /* Test for mono support */
454 i_physical_channels = AOUT_CHAN_CENTER;
455 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 1,
456 p_aout->output.output.i_rate, VLC_TRUE )
459 val.i_int = AOUT_VAR_MONO;
460 text.psz_string = N_("Mono");
461 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
462 msg_Dbg( p_aout, "device supports 1 channel" );
465 /* Check the speaker configuration to determine which channel config should
467 if FAILED( IDirectSound_GetSpeakerConfig( p_aout->output.p_sys->p_dsobject,
468 &ui_speaker_config ) )
470 ui_speaker_config = DSSPEAKER_STEREO;
472 switch( DSSPEAKER_CONFIG(ui_speaker_config) )
474 case DSSPEAKER_5POINT1:
475 val.i_int = AOUT_VAR_5_1;
478 val.i_int = AOUT_VAR_2F2R;
481 val.i_int = AOUT_VAR_MONO;
483 case DSSPEAKER_SURROUND:
484 case DSSPEAKER_STEREO:
486 val.i_int = AOUT_VAR_STEREO;
489 var_Set( p_aout, "audio-device", val );
491 /* Test for SPDIF support */
492 if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
494 if( CreateDSBuffer( p_aout, VLC_FOURCC('s','p','d','i'),
495 p_aout->output.output.i_physical_channels,
496 aout_FormatNbChannels( &p_aout->output.output ),
497 p_aout->output.output.i_rate,
498 AOUT_SPDIF_SIZE, VLC_TRUE )
501 msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
502 val.i_int = AOUT_VAR_SPDIF;
503 text.psz_string = N_("A/52 over S/PDIF");
504 var_Change( p_aout, "audio-device",
505 VLC_VAR_ADDCHOICE, &val, &text );
506 if( config_GetInt( p_aout, "spdif" ) )
507 var_Set( p_aout, "audio-device", val );
511 var_Change( p_aout, "audio-device", VLC_VAR_CHOICESCOUNT, &val, NULL );
514 /* Probe() has failed. */
515 var_Destroy( p_aout, "audio-device" );
519 var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
521 val.b_bool = VLC_TRUE;
522 var_Set( p_aout, "intf-change", val );
525 /*****************************************************************************
526 * Play: we'll start playing the directsound buffer here because at least here
527 * we know the first buffer has been put in the aout fifo and we also
529 *****************************************************************************/
530 static void Play( aout_instance_t *p_aout )
532 if( !p_aout->output.p_sys->b_playing )
534 aout_buffer_t *p_buffer;
536 p_aout->output.p_sys->b_playing = 1;
538 /* get the playing date of the first aout buffer */
539 p_aout->output.p_sys->p_notif->start_date =
540 aout_FifoFirstDate( p_aout, &p_aout->output.fifo );
542 /* fill in the first samples */
543 p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
544 FillBuffer( p_aout, 0, p_buffer );
546 /* wake up the audio output thread */
547 SetEvent( p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );
551 /*****************************************************************************
552 * CloseAudio: close the audio device
553 *****************************************************************************/
554 static void CloseAudio( vlc_object_t *p_this )
556 aout_instance_t * p_aout = (aout_instance_t *)p_this;
558 msg_Dbg( p_aout, "CloseAudio" );
560 /* kill the position notification thread, if any */
561 if( p_aout->output.p_sys->p_notif )
563 vlc_object_detach( p_aout->output.p_sys->p_notif );
564 if( p_aout->output.p_sys->p_notif->b_thread )
566 p_aout->output.p_sys->p_notif->b_die = 1;
568 if( !p_aout->output.p_sys->b_playing )
569 /* wake up the audio thread */
571 p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );
573 vlc_thread_join( p_aout->output.p_sys->p_notif );
575 vlc_object_destroy( p_aout->output.p_sys->p_notif );
578 /* release the secondary buffer */
579 DestroyDSBuffer( p_aout );
581 /* finally release the DirectSound object */
582 if( p_aout->output.p_sys->p_dsobject )
583 IDirectSound_Release( p_aout->output.p_sys->p_dsobject );
585 /* free DSOUND.DLL */
586 if( p_aout->output.p_sys->hdsound_dll )
587 FreeLibrary( p_aout->output.p_sys->hdsound_dll );
589 if( p_aout->output.p_sys->pi_chan_table )
590 free( p_aout->output.p_sys->pi_chan_table );
592 free( p_aout->output.p_sys );
595 /*****************************************************************************
596 * InitDirectSound: handle all the gory details of DirectSound initialisation
597 *****************************************************************************/
598 static int InitDirectSound( aout_instance_t *p_aout )
600 HRESULT (WINAPI *OurDirectSoundCreate)(LPGUID, LPDIRECTSOUND *, LPUNKNOWN);
602 p_aout->output.p_sys->hdsound_dll = LoadLibrary("DSOUND.DLL");
603 if( p_aout->output.p_sys->hdsound_dll == NULL )
605 msg_Warn( p_aout, "cannot open DSOUND.DLL" );
609 OurDirectSoundCreate = (void *)GetProcAddress(
610 p_aout->output.p_sys->hdsound_dll,
611 "DirectSoundCreate" );
612 if( OurDirectSoundCreate == NULL )
614 msg_Warn( p_aout, "GetProcAddress FAILED" );
618 /* Create the direct sound object */
619 if FAILED( OurDirectSoundCreate( NULL, &p_aout->output.p_sys->p_dsobject,
622 msg_Warn( p_aout, "cannot create a direct sound device" );
626 /* Set DirectSound Cooperative level, ie what control we want over Windows
627 * sound device. In our case, DSSCL_EXCLUSIVE means that we can modify the
628 * settings of the primary buffer, but also that only the sound of our
629 * application will be hearable when it will have the focus.
630 * !!! (this is not really working as intended yet because to set the
631 * cooperative level you need the window handle of your application, and
632 * I don't know of any easy way to get it. Especially since we might play
633 * sound without any video, and so what window handle should we use ???
634 * The hack for now is to use the Desktop window handle - it seems to be
636 if( IDirectSound_SetCooperativeLevel( p_aout->output.p_sys->p_dsobject,
640 msg_Warn( p_aout, "cannot set direct sound cooperative level" );
646 p_aout->output.p_sys->p_dsobject = NULL;
647 if( p_aout->output.p_sys->hdsound_dll )
649 FreeLibrary( p_aout->output.p_sys->hdsound_dll );
650 p_aout->output.p_sys->hdsound_dll = NULL;
656 /*****************************************************************************
657 * CreateDSBuffer: Creates a direct sound buffer of the required format.
658 *****************************************************************************
659 * This function creates the buffer we'll use to play audio.
660 * In DirectSound there are two kinds of buffers:
661 * - the primary buffer: which is the actual buffer that the soundcard plays
662 * - the secondary buffer(s): these buffers are the one actually used by
663 * applications and DirectSound takes care of mixing them into the primary.
665 * Once you create a secondary buffer, you cannot change its format anymore so
666 * you have to release the current one and create another.
667 *****************************************************************************/
668 static int CreateDSBuffer( aout_instance_t *p_aout, int i_format,
669 int i_channels, int i_nb_channels, int i_rate,
670 int i_bytes_per_frame, vlc_bool_t b_probe )
672 WAVEFORMATEXTENSIBLE waveformat;
673 DSBUFFERDESC dsbdesc;
676 /* First set the sound buffer format */
677 waveformat.dwChannelMask = 0;
678 for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
680 if( i_channels & pi_channels_in[i] )
681 waveformat.dwChannelMask |= pi_channels_out[i];
686 case VLC_FOURCC('s','p','d','i'):
688 /* To prevent channel re-ordering */
689 waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
690 waveformat.Format.wBitsPerSample = 16;
691 waveformat.Samples.wValidBitsPerSample =
692 waveformat.Format.wBitsPerSample;
693 waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
694 waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
697 case VLC_FOURCC('f','l','3','2'):
698 waveformat.Format.wBitsPerSample = sizeof(float) * 8;
699 waveformat.Samples.wValidBitsPerSample =
700 waveformat.Format.wBitsPerSample;
701 waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
702 waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
705 case VLC_FOURCC('s','1','6','l'):
706 waveformat.Format.wBitsPerSample = 16;
707 waveformat.Samples.wValidBitsPerSample =
708 waveformat.Format.wBitsPerSample;
709 waveformat.Format.wFormatTag = WAVE_FORMAT_PCM;
710 waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_PCM;
714 waveformat.Format.nChannels = i_nb_channels;
715 waveformat.Format.nSamplesPerSec = i_rate;
716 waveformat.Format.nBlockAlign =
717 waveformat.Format.wBitsPerSample / 8 * i_nb_channels;
718 waveformat.Format.nAvgBytesPerSec =
719 waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign;
721 /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */
722 if( i_nb_channels <= 2 )
724 waveformat.Format.cbSize = 0;
728 waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
729 waveformat.Format.cbSize =
730 sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
734 /* Then fill in the direct sound descriptor */
735 memset(&dsbdesc, 0, sizeof(DSBUFFERDESC));
736 dsbdesc.dwSize = sizeof(DSBUFFERDESC);
737 dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2/* Better position accuracy */
738 | DSBCAPS_CTRLPOSITIONNOTIFY /* We need notification */
739 | DSBCAPS_GLOBALFOCUS /* Allows background playing */
740 | DSBCAPS_LOCHARDWARE; /* Needed for 5.1 on emu101k */
741 dsbdesc.dwBufferBytes = FRAMES_NUM * i_bytes_per_frame; /* buffer size */
742 dsbdesc.lpwfxFormat = (WAVEFORMATEX *)&waveformat;
744 if FAILED( IDirectSound_CreateSoundBuffer(
745 p_aout->output.p_sys->p_dsobject, &dsbdesc,
746 &p_aout->output.p_sys->p_dsbuffer, NULL) )
748 /* Try without DSBCAPS_LOCHARDWARE */
749 dsbdesc.dwFlags &= ~DSBCAPS_LOCHARDWARE;
750 if FAILED( IDirectSound_CreateSoundBuffer(
751 p_aout->output.p_sys->p_dsobject, &dsbdesc,
752 &p_aout->output.p_sys->p_dsbuffer, NULL) )
756 if( !b_probe ) msg_Dbg( p_aout, "couldn't use hardware sound buffer" );
759 /* Stop here if we were just probing */
762 IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
763 p_aout->output.p_sys->p_dsbuffer = NULL;
767 /* Backup the size of a frame */
768 p_aout->output.p_sys->p_notif->i_frame_size = i_bytes_per_frame;
770 /* Now the secondary buffer is created, we need to setup its position
772 for( i = 0; i < FRAMES_NUM; i++ )
774 p_aout->output.p_sys->p_notif->p_events[i].dwOffset = i *
775 p_aout->output.p_sys->p_notif->i_frame_size;
777 p_aout->output.p_sys->p_notif->i_frame_status[i] = FRAME_EMPTY;
780 /* Get the IDirectSoundNotify interface */
781 if FAILED( IDirectSoundBuffer_QueryInterface(
782 p_aout->output.p_sys->p_dsbuffer,
783 &IID_IDirectSoundNotify,
784 (LPVOID *)&p_aout->output.p_sys->p_dsnotify ) )
786 msg_Err( p_aout, "cannot get IDirectSoundNotify interface" );
790 if FAILED( IDirectSoundNotify_SetNotificationPositions(
791 p_aout->output.p_sys->p_dsnotify,
793 p_aout->output.p_sys->p_notif->p_events ) )
795 msg_Err( p_aout, "cannot set position notification" );
799 p_aout->output.p_sys->i_channel_mask = waveformat.dwChannelMask;
800 CheckReordering( p_aout, i_nb_channels );
805 DestroyDSBuffer( p_aout );
809 /*****************************************************************************
810 * CreateDSBufferPCM: creates a PCM direct sound buffer.
811 *****************************************************************************
812 * We first try to create a WAVE_FORMAT_IEEE_FLOAT buffer if supported by
813 * the hardware, otherwise we create a WAVE_FORMAT_PCM buffer.
814 ****************************************************************************/
815 static int CreateDSBufferPCM( aout_instance_t *p_aout, int *i_format,
816 int i_channels, int i_nb_channels, int i_rate,
819 /* Float32 audio samples are not supported for 5.1 output on the emu101k */
821 if( i_nb_channels > 2 ||
822 CreateDSBuffer( p_aout, VLC_FOURCC('f','l','3','2'),
823 i_channels, i_nb_channels, i_rate,
824 FRAME_SIZE * 4 * i_nb_channels, b_probe )
827 if ( CreateDSBuffer( p_aout, VLC_FOURCC('s','1','6','l'),
828 i_channels, i_nb_channels, i_rate,
829 FRAME_SIZE * 2 * i_nb_channels, b_probe )
836 *i_format = VLC_FOURCC('s','1','6','l');
842 *i_format = VLC_FOURCC('f','l','3','2');
847 /*****************************************************************************
849 *****************************************************************************
850 * This function destroys the secondary buffer.
851 *****************************************************************************/
852 static void DestroyDSBuffer( aout_instance_t *p_aout )
854 if( p_aout->output.p_sys->p_dsnotify )
856 IDirectSoundNotify_Release( p_aout->output.p_sys->p_dsnotify );
857 p_aout->output.p_sys->p_dsnotify = NULL;
860 if( p_aout->output.p_sys->p_dsbuffer )
862 IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
863 p_aout->output.p_sys->p_dsbuffer = NULL;
867 /*****************************************************************************
868 * FillBuffer: Fill in one of the direct sound frame buffers.
869 *****************************************************************************
870 * Returns VLC_SUCCESS on success.
871 *****************************************************************************/
872 static int FillBuffer( aout_instance_t *p_aout, int i_frame,
873 aout_buffer_t *p_buffer )
875 notification_thread_t *p_notif = p_aout->output.p_sys->p_notif;
876 void *p_write_position, *p_wrap_around;
877 long l_bytes1, l_bytes2;
880 /* Before copying anything, we have to lock the buffer */
881 dsresult = IDirectSoundBuffer_Lock(
882 p_aout->output.p_sys->p_dsbuffer, /* DS buffer */
883 i_frame * p_notif->i_frame_size, /* Start offset */
884 p_notif->i_frame_size, /* Number of bytes */
885 &p_write_position, /* Address of lock start */
886 &l_bytes1, /* Count of bytes locked before wrap around */
887 &p_wrap_around, /* Buffer adress (if wrap around) */
888 &l_bytes2, /* Count of bytes after wrap around */
890 if( dsresult == DSERR_BUFFERLOST )
892 IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
893 dsresult = IDirectSoundBuffer_Lock(
894 p_aout->output.p_sys->p_dsbuffer,
895 i_frame * p_notif->i_frame_size,
896 p_notif->i_frame_size,
903 if( dsresult != DS_OK )
905 msg_Warn( p_notif, "cannot lock buffer" );
906 if( p_buffer ) aout_BufferFree( p_buffer );
910 if( p_buffer == NULL )
912 memset( p_write_position, 0, l_bytes1 );
914 else if( p_aout->output.p_sys->b_chan_reorder )
916 /* Do the channel reordering here */
918 if( p_aout->output.output.i_format == VLC_FOURCC('s','1','6','l') )
919 InterleaveS16( (int16_t *)p_buffer->p_buffer,
920 (int16_t *)p_write_position,
921 p_aout->output.p_sys->pi_chan_table,
922 aout_FormatNbChannels( &p_aout->output.output ) );
924 InterleaveFloat32( (float *)p_buffer->p_buffer,
925 (float *)p_write_position,
926 p_aout->output.p_sys->pi_chan_table,
927 aout_FormatNbChannels( &p_aout->output.output ) );
929 aout_BufferFree( p_buffer );
933 p_aout->p_vlc->pf_memcpy( p_write_position, p_buffer->p_buffer,
935 aout_BufferFree( p_buffer );
938 /* Now the data has been copied, unlock the buffer */
939 IDirectSoundBuffer_Unlock( p_aout->output.p_sys->p_dsbuffer,
940 p_write_position, l_bytes1,
941 p_wrap_around, l_bytes2 );
946 /*****************************************************************************
947 * DirectSoundThread: this thread will capture play notification events.
948 *****************************************************************************
949 * We use this thread to emulate a callback mechanism. The thread probes for
950 * event notification and fills up the DS secondary buffer when needed.
951 *****************************************************************************/
952 static void DirectSoundThread( notification_thread_t *p_notif )
954 HANDLE notification_events[FRAMES_NUM];
956 aout_instance_t *p_aout = p_notif->p_aout;
957 int i, i_which_frame, i_last_frame, i_next_frame;
961 for( i = 0; i < FRAMES_NUM; i++ )
962 notification_events[i] = p_notif->p_events[i].hEventNotify;
964 /* We don't want any resampling when using S/PDIF output */
965 b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i');
967 /* Tell the main thread that we are ready */
968 vlc_thread_ready( p_notif );
970 msg_Dbg( p_notif, "DirectSoundThread ready" );
972 /* Wait here until Play() is called */
973 WaitForSingleObject( notification_events[0], INFINITE );
975 if( !p_notif->b_die )
977 mwait( p_notif->start_date - AOUT_PTS_TOLERANCE / 2 );
979 /* start playing the buffer */
980 dsresult = IDirectSoundBuffer_Play( p_aout->output.p_sys->p_dsbuffer,
983 DSBPLAY_LOOPING ); /* Flags */
984 if( dsresult == DSERR_BUFFERLOST )
986 IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
987 dsresult = IDirectSoundBuffer_Play(
988 p_aout->output.p_sys->p_dsbuffer,
991 DSBPLAY_LOOPING ); /* Flags */
993 if( dsresult != DS_OK )
995 msg_Err( p_aout, "cannot start playing buffer" );
999 while( !p_notif->b_die )
1001 aout_buffer_t *p_buffer;
1004 /* wait for the position notification */
1005 i_which_frame = WaitForMultipleObjects( FRAMES_NUM,
1006 notification_events, 0,
1007 INFINITE ) - WAIT_OBJECT_0;
1009 if( p_notif->b_die )
1014 /* We take into account the current latency */
1015 if SUCCEEDED( IDirectSoundBuffer_GetCurrentPosition(
1016 p_aout->output.p_sys->p_dsbuffer,
1017 &l_latency, NULL ) )
1019 if( l_latency > (i_which_frame * FRAME_SIZE)
1020 && l_latency < ((i_which_frame+1) * FRAME_SIZE) )
1022 l_latency = - ( l_latency /
1023 p_aout->output.output.i_bytes_per_frame %
1028 l_latency = FRAME_SIZE - ( l_latency /
1029 p_aout->output.output.i_bytes_per_frame %
1038 /* Mark last frame as empty */
1039 i_last_frame = (i_which_frame + FRAMES_NUM -1) % FRAMES_NUM;
1040 i_next_frame = (i_which_frame + 1) % FRAMES_NUM;
1041 p_notif->i_frame_status[i_last_frame] = FRAME_EMPTY;
1043 /* Try to fill in as many frame buffers as possible */
1044 for( i = i_next_frame; (i % FRAMES_NUM) != i_which_frame; i++ )
1047 /* Check if frame buf is already filled */
1048 if( p_notif->i_frame_status[i % FRAMES_NUM] == FRAME_QUEUED )
1051 p_buffer = aout_OutputNextBuffer( p_aout,
1052 mtime + 1000000 / p_aout->output.output.i_rate *
1053 ((i - i_next_frame + 1) * FRAME_SIZE + l_latency), b_sleek );
1055 /* If there is no audio data available and we have some buffered
1056 * already, then just wait for the next time */
1057 if( !p_buffer && (i != i_next_frame) )
1059 //msg_Err( p_aout, "only %i frame buffers filled!",
1060 // i - i_next_frame );
1064 if( FillBuffer( p_aout, (i%FRAMES_NUM), p_buffer )
1068 /* Mark the frame buffer as QUEUED */
1069 p_notif->i_frame_status[i%FRAMES_NUM] = FRAME_QUEUED;
1074 /* make sure the buffer isn't playing */
1075 IDirectSoundBuffer_Stop( p_aout->output.p_sys->p_dsbuffer );
1077 /* free the events */
1078 for( i = 0; i < FRAMES_NUM; i++ )
1079 CloseHandle( notification_events[i] );
1081 msg_Dbg( p_notif, "DirectSoundThread exiting" );
1084 /*****************************************************************************
1085 * CheckReordering: Check if we need to do some channel re-ordering (the ac3
1086 * channel order is different from the one chosen by
1088 *****************************************************************************/
1089 static void CheckReordering( aout_instance_t *p_aout, int i_nb_channels )
1093 #define i_channel_mask p_aout->output.p_sys->i_channel_mask
1094 #define pi_chan_table p_aout->output.p_sys->pi_chan_table
1096 p_aout->output.p_sys->b_chan_reorder = VLC_FALSE;
1098 pi_chan_table = malloc( i_nb_channels * sizeof(int) );
1099 if( !pi_chan_table )
1105 i < (int)(sizeof(pi_channels_out)/sizeof(uint32_t)); i++ )
1107 if( i_channel_mask & pi_channels_out[i] )
1110 pi_channels_out[i] != pi_channels_ordered[k]; k++ )
1112 if( i_channel_mask & pi_channels_ordered[k] )
1118 pi_chan_table[j] = l;
1124 for( i = 0; i < i_nb_channels; i++ )
1126 if( pi_chan_table[i] != i )
1128 p_aout->output.p_sys->b_chan_reorder = VLC_TRUE;
1132 if( p_aout->output.p_sys->b_chan_reorder )
1134 msg_Dbg( p_aout, "channel reordering needed" );
1137 #undef pi_chan_table
1141 /*****************************************************************************
1142 * InterleaveFloat32/S16: change the channel order to the Microsoft one.
1143 *****************************************************************************/
1144 static void InterleaveFloat32( float *p_buf, float *p_buf_out,
1145 int *pi_chan_table, int i_nb_channels )
1149 for( i = 0; i < FRAME_SIZE; i++ )
1151 for( j = 0; j < i_nb_channels; j++ )
1153 p_buf_out[i*i_nb_channels + pi_chan_table[j]] =
1154 p_buf[i*i_nb_channels + j];
1159 static void InterleaveS16( int16_t *p_buf, int16_t *p_buf_out,
1160 int *pi_chan_table, int i_nb_channels )
1164 for( i = 0; i < FRAME_SIZE; i++ )
1166 for( j = 0; j < i_nb_channels; j++ )
1168 p_buf_out[ i*i_nb_channels + pi_chan_table[j]] =
1169 p_buf[i*i_nb_channels + j];