1 /*****************************************************************************
2 * directx.c: Windows DirectX audio output method
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: directx.c,v 1.17 2003/04/07 16:02:08 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 /* Now we need to setup our DirectSound play notification structure */
255 p_aout->output.p_sys->p_notif =
256 vlc_object_create( p_aout, sizeof(notification_thread_t) );
257 p_aout->output.p_sys->p_notif->p_aout = p_aout;
259 if( var_Type( p_aout, "audio-device" ) == 0 )
264 if( var_Get( p_aout, "audio-device", &val ) < 0 )
266 /* Probe() has failed. */
267 free( p_aout->output.p_sys );
271 /* Then create the notification events */
272 for( i = 0; i < FRAMES_NUM; i++ )
273 p_aout->output.p_sys->p_notif->p_events[i].hEventNotify =
274 CreateEvent( NULL, FALSE, FALSE, NULL );
276 /* Open the device */
277 if( !strcmp( val.psz_string, N_("A/52 over S/PDIF") ) )
279 free( val.psz_string );
280 p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
282 /* Calculate the frame size in bytes */
283 p_aout->output.i_nb_samples = A52_FRAME_NB;
284 p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
285 p_aout->output.output.i_frame_length = A52_FRAME_NB;
286 p_aout->output.p_sys->i_frame_size =
287 p_aout->output.output.i_bytes_per_frame;
289 if( CreateDSBuffer( p_aout, VLC_FOURCC('s','p','d','i'),
290 p_aout->output.output.i_physical_channels,
291 aout_FormatNbChannels( &p_aout->output.output ),
292 p_aout->output.output.i_rate,
293 p_aout->output.p_sys->i_frame_size, VLC_FALSE )
296 msg_Err( p_aout, "cannot open waveout audio device" );
297 free( p_aout->output.p_sys );
301 aout_VolumeNoneInit( p_aout );
305 if( !strcmp( val.psz_string, N_("5.1") ) )
307 p_aout->output.output.i_physical_channels
308 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
309 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
312 else if( !strcmp( val.psz_string, N_("2 Front 2 Rear") ) )
314 p_aout->output.output.i_physical_channels
315 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
316 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
318 else if( !strcmp( val.psz_string, "Mono" ) )
320 p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
324 p_aout->output.output.i_physical_channels
325 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
327 free( val.psz_string );
329 if( CreateDSBufferPCM( p_aout, &p_aout->output.output.i_format,
330 p_aout->output.output.i_physical_channels,
331 aout_FormatNbChannels( &p_aout->output.output ),
332 p_aout->output.output.i_rate, VLC_FALSE )
335 msg_Err( p_aout, "cannot open waveout audio device" );
336 free( p_aout->output.p_sys );
340 /* Calculate the frame size in bytes */
341 p_aout->output.i_nb_samples = FRAME_SIZE;
342 aout_FormatPrepare( &p_aout->output.output );
343 p_aout->output.p_sys->i_frame_size =
344 FRAME_SIZE * p_aout->output.output.i_bytes_per_frame;
346 aout_VolumeSoftInit( p_aout );
349 /* then launch the notification thread */
350 msg_Dbg( p_aout, "creating DirectSoundThread" );
351 if( vlc_thread_create( p_aout->output.p_sys->p_notif,
352 "DirectSound Notification Thread",
354 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
356 msg_Err( p_aout, "cannot create DirectSoundThread" );
360 vlc_object_attach( p_aout->output.p_sys->p_notif, p_aout );
365 CloseAudio( VLC_OBJECT(p_aout) );
369 /*****************************************************************************
370 * Probe: probe the audio device for available formats and channels
371 *****************************************************************************/
372 static void Probe( aout_instance_t * p_aout )
376 unsigned int i_physical_channels;
377 DWORD ui_speaker_config;
379 var_Create( p_aout, "audio-device", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
381 /* Test for 5.1 support */
382 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
383 AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
384 AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE;
385 if( p_aout->output.output.i_physical_channels == i_physical_channels )
387 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 6,
388 p_aout->output.output.i_rate, VLC_TRUE )
391 val.psz_string = N_("5.1");
392 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val );
393 msg_Dbg( p_aout, "device supports 5.1 channels" );
397 /* Test for 2 Front 2 Rear support */
398 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
399 AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
400 if( ( p_aout->output.output.i_physical_channels & i_physical_channels )
401 == i_physical_channels )
403 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 4,
404 p_aout->output.output.i_rate, VLC_TRUE )
407 val.psz_string = N_("2 Front 2 Rear");
408 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val );
409 msg_Dbg( p_aout, "device supports 4 channels" );
413 /* Test for stereo support */
414 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
415 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 2,
416 p_aout->output.output.i_rate, VLC_TRUE )
419 val.psz_string = N_("Stereo");
420 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val );
421 msg_Dbg( p_aout, "device supports 2 channels" );
424 /* Test for mono support */
425 i_physical_channels = AOUT_CHAN_CENTER;
426 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 1,
427 p_aout->output.output.i_rate, VLC_TRUE )
430 val.psz_string = N_("Mono");
431 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val );
432 msg_Dbg( p_aout, "device supports 1 channel" );
435 /* Check the speaker configuration to determine which channel config should
437 if FAILED( IDirectSound_GetSpeakerConfig( p_aout->output.p_sys->p_dsobject,
438 &ui_speaker_config ) )
440 ui_speaker_config = DSSPEAKER_STEREO;
442 switch( DSSPEAKER_CONFIG(ui_speaker_config) )
444 case DSSPEAKER_5POINT1:
445 val.psz_string = N_("5.1");
448 val.psz_string = N_("2 Front 2 Rear");
451 val.psz_string = N_("Mono");
453 case DSSPEAKER_SURROUND:
454 case DSSPEAKER_STEREO:
456 val.psz_string = N_("Stereo");
459 var_Set( p_aout, "audio-device", val );
461 /* Test for SPDIF support */
462 if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
464 if( CreateDSBuffer( p_aout, VLC_FOURCC('s','p','d','i'),
465 p_aout->output.output.i_physical_channels,
466 aout_FormatNbChannels( &p_aout->output.output ),
467 p_aout->output.output.i_rate,
468 AOUT_SPDIF_SIZE, VLC_TRUE )
471 msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
472 val.psz_string = N_("A/52 over S/PDIF");
473 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val );
474 if( config_GetInt( p_aout, "spdif" ) )
475 var_Set( p_aout, "audio-device", val );
479 var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
481 val.b_bool = VLC_TRUE;
482 var_Set( p_aout, "intf-change", val );
485 /*****************************************************************************
486 * Play: we'll start playing the directsound buffer here because at least here
487 * we know the first buffer has been put in the aout fifo and we also
489 *****************************************************************************/
490 static void Play( aout_instance_t *p_aout )
492 if( !p_aout->output.p_sys->b_playing )
494 aout_buffer_t *p_buffer;
496 p_aout->output.p_sys->b_playing = 1;
498 /* get the playing date of the first aout buffer */
499 p_aout->output.p_sys->p_notif->start_date =
500 aout_FifoFirstDate( p_aout, &p_aout->output.fifo );
502 /* fill in the first samples */
503 p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
504 FillBuffer( p_aout, 0, p_buffer );
506 /* wake up the audio output thread */
507 SetEvent( p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );
511 /*****************************************************************************
512 * CloseAudio: close the audio device
513 *****************************************************************************/
514 static void CloseAudio( vlc_object_t *p_this )
516 aout_instance_t * p_aout = (aout_instance_t *)p_this;
518 msg_Dbg( p_aout, "CloseAudio" );
520 /* kill the position notification thread, if any */
521 if( p_aout->output.p_sys->p_notif )
523 vlc_object_detach( p_aout->output.p_sys->p_notif );
524 if( p_aout->output.p_sys->p_notif->b_thread )
526 p_aout->output.p_sys->p_notif->b_die = 1;
528 if( !p_aout->output.p_sys->b_playing )
529 /* wake up the audio thread */
531 p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );
533 vlc_thread_join( p_aout->output.p_sys->p_notif );
535 vlc_object_destroy( p_aout->output.p_sys->p_notif );
538 /* release the secondary buffer */
539 DestroyDSBuffer( p_aout );
541 /* finally release the DirectSound object */
542 if( p_aout->output.p_sys->p_dsobject )
543 IDirectSound_Release( p_aout->output.p_sys->p_dsobject );
545 /* free DSOUND.DLL */
546 if( p_aout->output.p_sys->hdsound_dll )
547 FreeLibrary( p_aout->output.p_sys->hdsound_dll );
549 if( p_aout->output.p_sys->pi_chan_table )
550 free( p_aout->output.p_sys->pi_chan_table );
552 free( p_aout->output.p_sys );
555 /*****************************************************************************
556 * InitDirectSound: handle all the gory details of DirectSound initialisation
557 *****************************************************************************/
558 static int InitDirectSound( aout_instance_t *p_aout )
560 HRESULT (WINAPI *OurDirectSoundCreate)(LPGUID, LPDIRECTSOUND *, LPUNKNOWN);
562 p_aout->output.p_sys->hdsound_dll = LoadLibrary("DSOUND.DLL");
563 if( p_aout->output.p_sys->hdsound_dll == NULL )
565 msg_Warn( p_aout, "cannot open DSOUND.DLL" );
569 OurDirectSoundCreate = (void *)GetProcAddress(
570 p_aout->output.p_sys->hdsound_dll,
571 "DirectSoundCreate" );
572 if( OurDirectSoundCreate == NULL )
574 msg_Warn( p_aout, "GetProcAddress FAILED" );
578 /* Create the direct sound object */
579 if FAILED( OurDirectSoundCreate( NULL, &p_aout->output.p_sys->p_dsobject,
582 msg_Warn( p_aout, "cannot create a direct sound device" );
586 /* Set DirectSound Cooperative level, ie what control we want over Windows
587 * sound device. In our case, DSSCL_EXCLUSIVE means that we can modify the
588 * settings of the primary buffer, but also that only the sound of our
589 * application will be hearable when it will have the focus.
590 * !!! (this is not really working as intended yet because to set the
591 * cooperative level you need the window handle of your application, and
592 * I don't know of any easy way to get it. Especially since we might play
593 * sound without any video, and so what window handle should we use ???
594 * The hack for now is to use the Desktop window handle - it seems to be
596 if( IDirectSound_SetCooperativeLevel( p_aout->output.p_sys->p_dsobject,
600 msg_Warn( p_aout, "cannot set direct sound cooperative level" );
606 p_aout->output.p_sys->p_dsobject = NULL;
607 if( p_aout->output.p_sys->hdsound_dll )
609 FreeLibrary( p_aout->output.p_sys->hdsound_dll );
610 p_aout->output.p_sys->hdsound_dll = NULL;
616 /*****************************************************************************
617 * CreateDSBuffer: Creates a direct sound buffer of the required format.
618 *****************************************************************************
619 * This function creates the buffer we'll use to play audio.
620 * In DirectSound there are two kinds of buffers:
621 * - the primary buffer: which is the actual buffer that the soundcard plays
622 * - the secondary buffer(s): these buffers are the one actually used by
623 * applications and DirectSound takes care of mixing them into the primary.
625 * Once you create a secondary buffer, you cannot change its format anymore so
626 * you have to release the current one and create another.
627 *****************************************************************************/
628 static int CreateDSBuffer( aout_instance_t *p_aout, int i_format,
629 int i_channels, int i_nb_channels, int i_rate,
630 int i_bytes_per_frame, vlc_bool_t b_probe )
632 WAVEFORMATEXTENSIBLE waveformat;
633 DSBUFFERDESC dsbdesc;
636 /* First set the sound buffer format */
637 waveformat.dwChannelMask = 0;
638 for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
640 if( i_channels & pi_channels_in[i] )
641 waveformat.dwChannelMask |= pi_channels_out[i];
646 case VLC_FOURCC('s','p','d','i'):
648 /* To prevent channel re-ordering */
649 waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
650 waveformat.Format.wBitsPerSample = 16;
651 waveformat.Samples.wValidBitsPerSample =
652 waveformat.Format.wBitsPerSample;
653 waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
654 waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
657 case VLC_FOURCC('f','l','3','2'):
658 waveformat.Format.wBitsPerSample = sizeof(float) * 8;
659 waveformat.Samples.wValidBitsPerSample =
660 waveformat.Format.wBitsPerSample;
661 waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
662 waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
665 case VLC_FOURCC('s','1','6','l'):
666 waveformat.Format.wBitsPerSample = 16;
667 waveformat.Samples.wValidBitsPerSample =
668 waveformat.Format.wBitsPerSample;
669 waveformat.Format.wFormatTag = WAVE_FORMAT_PCM;
670 waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_PCM;
674 waveformat.Format.nChannels = i_nb_channels;
675 waveformat.Format.nSamplesPerSec = i_rate;
676 waveformat.Format.nBlockAlign =
677 waveformat.Format.wBitsPerSample / 8 * i_nb_channels;
678 waveformat.Format.nAvgBytesPerSec =
679 waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign;
681 /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */
682 if( i_nb_channels <= 2 )
684 waveformat.Format.cbSize = 0;
688 waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
689 waveformat.Format.cbSize =
690 sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
694 /* Then fill in the direct sound descriptor */
695 memset(&dsbdesc, 0, sizeof(DSBUFFERDESC));
696 dsbdesc.dwSize = sizeof(DSBUFFERDESC);
697 dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2/* Better position accuracy */
698 | DSBCAPS_CTRLPOSITIONNOTIFY /* We need notification */
699 | DSBCAPS_GLOBALFOCUS; /* Allows background playing */
700 dsbdesc.dwBufferBytes = FRAMES_NUM * i_bytes_per_frame; /* buffer size */
701 dsbdesc.lpwfxFormat = (WAVEFORMATEX *)&waveformat;
703 if FAILED( IDirectSound_CreateSoundBuffer(
704 p_aout->output.p_sys->p_dsobject, &dsbdesc,
705 &p_aout->output.p_sys->p_dsbuffer, NULL) )
710 /* Stop here if we were just probing */
713 IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
714 p_aout->output.p_sys->p_dsbuffer = NULL;
718 /* Backup the size of a frame */
719 p_aout->output.p_sys->p_notif->i_frame_size = i_bytes_per_frame;
721 /* Now the secondary buffer is created, we need to setup its position
723 for( i = 0; i < FRAMES_NUM; i++ )
725 p_aout->output.p_sys->p_notif->p_events[i].dwOffset = i *
726 p_aout->output.p_sys->p_notif->i_frame_size;
728 p_aout->output.p_sys->p_notif->i_frame_status[i] = FRAME_EMPTY;
731 /* Get the IDirectSoundNotify interface */
732 if FAILED( IDirectSoundBuffer_QueryInterface(
733 p_aout->output.p_sys->p_dsbuffer,
734 &IID_IDirectSoundNotify,
735 (LPVOID *)&p_aout->output.p_sys->p_dsnotify ) )
737 msg_Err( p_aout, "cannot get IDirectSoundNotify interface" );
741 if FAILED( IDirectSoundNotify_SetNotificationPositions(
742 p_aout->output.p_sys->p_dsnotify,
744 p_aout->output.p_sys->p_notif->p_events ) )
746 msg_Err( p_aout, "cannot set position notification" );
750 p_aout->output.p_sys->i_channel_mask = waveformat.dwChannelMask;
751 CheckReordering( p_aout, i_nb_channels );
756 if( p_aout->output.p_sys->p_dsbuffer )
758 IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
759 p_aout->output.p_sys->p_dsbuffer = NULL;
761 if( p_aout->output.p_sys->p_dsnotify )
763 IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
764 p_aout->output.p_sys->p_dsnotify = NULL;
769 /*****************************************************************************
770 * CreateDSBufferPCM: creates a PCM direct sound buffer.
771 *****************************************************************************
772 * We first try to create a WAVE_FORMAT_IEEE_FLOAT buffer if supported by
773 * the hardware, otherwise we create a WAVE_FORMAT_PCM buffer.
774 ****************************************************************************/
775 static int CreateDSBufferPCM( aout_instance_t *p_aout, int *i_format,
776 int i_channels, int i_nb_channels, int i_rate,
779 if( CreateDSBuffer( p_aout, VLC_FOURCC('f','l','3','2'),
780 i_channels, i_nb_channels, i_rate,
781 FRAME_SIZE * 4 * i_nb_channels, b_probe )
784 if ( CreateDSBuffer( p_aout, VLC_FOURCC('s','1','6','l'),
785 i_channels, i_nb_channels, i_rate,
786 FRAME_SIZE * 2 * i_nb_channels, b_probe )
793 *i_format = VLC_FOURCC('s','1','6','l');
799 *i_format = VLC_FOURCC('f','l','3','2');
804 /*****************************************************************************
806 *****************************************************************************
807 * This function destroys the secondary buffer.
808 *****************************************************************************/
809 static void DestroyDSBuffer( aout_instance_t *p_aout )
811 if( p_aout->output.p_sys->p_dsnotify )
813 IDirectSoundNotify_Release( p_aout->output.p_sys->p_dsnotify );
814 p_aout->output.p_sys->p_dsnotify = NULL;
817 if( p_aout->output.p_sys->p_dsbuffer )
819 IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
820 p_aout->output.p_sys->p_dsbuffer = NULL;
824 /*****************************************************************************
825 * FillBuffer: Fill in one of the direct sound frame buffers.
826 *****************************************************************************
827 * Returns VLC_SUCCESS on success.
828 *****************************************************************************/
829 static int FillBuffer( aout_instance_t *p_aout, int i_frame,
830 aout_buffer_t *p_buffer )
832 notification_thread_t *p_notif = p_aout->output.p_sys->p_notif;
833 void *p_write_position, *p_wrap_around;
834 long l_bytes1, l_bytes2;
837 /* Before copying anything, we have to lock the buffer */
838 dsresult = IDirectSoundBuffer_Lock(
839 p_aout->output.p_sys->p_dsbuffer, /* DS buffer */
840 i_frame * p_notif->i_frame_size, /* Start offset */
841 p_notif->i_frame_size, /* Number of bytes */
842 &p_write_position, /* Address of lock start */
843 &l_bytes1, /* Count of bytes locked before wrap around */
844 &p_wrap_around, /* Buffer adress (if wrap around) */
845 &l_bytes2, /* Count of bytes after wrap around */
847 if( dsresult == DSERR_BUFFERLOST )
849 IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
850 dsresult = IDirectSoundBuffer_Lock(
851 p_aout->output.p_sys->p_dsbuffer,
852 i_frame * p_notif->i_frame_size,
853 p_notif->i_frame_size,
860 if( dsresult != DS_OK )
862 msg_Warn( p_notif, "cannot lock buffer" );
863 if( p_buffer ) aout_BufferFree( p_buffer );
867 if( p_buffer == NULL )
869 memset( p_write_position, 0, l_bytes1 );
871 else if( p_aout->output.p_sys->b_chan_reorder )
873 /* Do the channel reordering here */
875 if( p_aout->output.output.i_format == VLC_FOURCC('s','1','6','l') )
876 InterleaveS16( (int16_t *)p_buffer->p_buffer,
877 (int16_t *)p_write_position,
878 p_aout->output.p_sys->pi_chan_table,
879 aout_FormatNbChannels( &p_aout->output.output ) );
881 InterleaveFloat32( (float *)p_buffer->p_buffer,
882 (float *)p_write_position,
883 p_aout->output.p_sys->pi_chan_table,
884 aout_FormatNbChannels( &p_aout->output.output ) );
888 p_aout->p_vlc->pf_memcpy( p_write_position, p_buffer->p_buffer,
890 aout_BufferFree( p_buffer );
893 /* Now the data has been copied, unlock the buffer */
894 IDirectSoundBuffer_Unlock( p_aout->output.p_sys->p_dsbuffer,
895 p_write_position, l_bytes1,
896 p_wrap_around, l_bytes2 );
901 /*****************************************************************************
902 * DirectSoundThread: this thread will capture play notification events.
903 *****************************************************************************
904 * We use this thread to emulate a callback mechanism. The thread probes for
905 * event notification and fills up the DS secondary buffer when needed.
906 *****************************************************************************/
907 static void DirectSoundThread( notification_thread_t *p_notif )
909 HANDLE notification_events[FRAMES_NUM];
911 aout_instance_t *p_aout = p_notif->p_aout;
912 int i, i_which_frame, i_last_frame, i_next_frame;
916 for( i = 0; i < FRAMES_NUM; i++ )
917 notification_events[i] = p_notif->p_events[i].hEventNotify;
919 /* We don't want any resampling when using S/PDIF output */
920 b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i');
922 /* Tell the main thread that we are ready */
923 vlc_thread_ready( p_notif );
925 msg_Dbg( p_notif, "DirectSoundThread ready" );
927 /* Wait here until Play() is called */
928 WaitForSingleObject( notification_events[0], INFINITE );
930 if( !p_notif->b_die )
932 mwait( p_notif->start_date - AOUT_PTS_TOLERANCE / 2 );
934 /* start playing the buffer */
935 dsresult = IDirectSoundBuffer_Play( p_aout->output.p_sys->p_dsbuffer,
938 DSBPLAY_LOOPING ); /* Flags */
939 if( dsresult == DSERR_BUFFERLOST )
941 IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
942 dsresult = IDirectSoundBuffer_Play(
943 p_aout->output.p_sys->p_dsbuffer,
946 DSBPLAY_LOOPING ); /* Flags */
948 if( dsresult != DS_OK )
950 msg_Err( p_aout, "cannot start playing buffer" );
954 while( !p_notif->b_die )
956 aout_buffer_t *p_buffer;
959 /* wait for the position notification */
960 i_which_frame = WaitForMultipleObjects( FRAMES_NUM,
961 notification_events, 0,
962 INFINITE ) - WAIT_OBJECT_0;
969 /* We take into account the current latency */
970 if SUCCEEDED( IDirectSoundBuffer_GetCurrentPosition(
971 p_aout->output.p_sys->p_dsbuffer,
974 if( l_latency > (i_which_frame * FRAME_SIZE)
975 && l_latency < ((i_which_frame+1) * FRAME_SIZE) )
977 l_latency = - ( l_latency /
978 p_aout->output.output.i_bytes_per_frame %
983 l_latency = FRAME_SIZE - ( l_latency /
984 p_aout->output.output.i_bytes_per_frame %
993 /* Mark last frame as empty */
994 i_last_frame = (i_which_frame + FRAMES_NUM -1) % FRAMES_NUM;
995 i_next_frame = (i_which_frame + 1) % FRAMES_NUM;
996 p_notif->i_frame_status[i_last_frame] = FRAME_EMPTY;
998 /* Try to fill in as many frame buffers as possible */
999 for( i = i_next_frame; (i % FRAMES_NUM) != i_which_frame; i++ )
1002 /* Check if frame buf is already filled */
1003 if( p_notif->i_frame_status[i % FRAMES_NUM] == FRAME_QUEUED )
1006 p_buffer = aout_OutputNextBuffer( p_aout,
1007 mtime + 1000000 / p_aout->output.output.i_rate *
1008 ((i - i_next_frame + 1) * FRAME_SIZE + l_latency), b_sleek );
1010 /* If there is no audio data available and we have some buffered
1011 * already, then just wait for the next time */
1012 if( !p_buffer && (i != i_next_frame) )
1014 //msg_Err( p_aout, "only %i frame buffers filled!",
1015 // i - i_next_frame );
1019 if( FillBuffer( p_aout, (i%FRAMES_NUM), p_buffer )
1023 /* Mark the frame buffer as QUEUED */
1024 p_notif->i_frame_status[i%FRAMES_NUM] = FRAME_QUEUED;
1029 /* make sure the buffer isn't playing */
1030 IDirectSoundBuffer_Stop( p_aout->output.p_sys->p_dsbuffer );
1032 /* free the events */
1033 for( i = 0; i < FRAMES_NUM; i++ )
1034 CloseHandle( notification_events[i] );
1036 msg_Dbg( p_notif, "DirectSoundThread exiting" );
1039 /*****************************************************************************
1040 * CheckReordering: Check if we need to do some channel re-ordering (the ac3
1041 * channel order is different from the one chosen by
1043 *****************************************************************************/
1044 static void CheckReordering( aout_instance_t *p_aout, int i_nb_channels )
1048 #define i_channel_mask p_aout->output.p_sys->i_channel_mask
1049 #define pi_chan_table p_aout->output.p_sys->pi_chan_table
1051 p_aout->output.p_sys->b_chan_reorder = VLC_FALSE;
1053 pi_chan_table = malloc( i_nb_channels * sizeof(int) );
1054 if( !pi_chan_table )
1060 i < (int)(sizeof(pi_channels_out)/sizeof(uint32_t)); i++ )
1062 if( i_channel_mask & pi_channels_out[i] )
1065 pi_channels_out[i] != pi_channels_ordered[k]; k++ )
1067 if( i_channel_mask & pi_channels_ordered[k] )
1073 pi_chan_table[j] = l;
1079 for( i = 0; i < i_nb_channels; i++ )
1081 if( pi_chan_table[i] != i )
1083 p_aout->output.p_sys->b_chan_reorder = VLC_TRUE;
1087 if( p_aout->output.p_sys->b_chan_reorder )
1089 msg_Dbg( p_aout, "channel reordering needed" );
1092 #undef pi_chan_table
1096 /*****************************************************************************
1097 * InterleaveFloat32/S16: change the channel order to the Microsoft one.
1098 *****************************************************************************/
1099 static void InterleaveFloat32( float *p_buf, float *p_buf_out,
1100 int *pi_chan_table, int i_nb_channels )
1104 for( i = 0; i < FRAME_SIZE; i++ )
1106 for( j = 0; j < i_nb_channels; j++ )
1108 p_buf_out[i*i_nb_channels + pi_chan_table[j]] =
1109 p_buf[i*i_nb_channels + j];
1114 static void InterleaveS16( int16_t *p_buf, int16_t *p_buf_out,
1115 int *pi_chan_table, int i_nb_channels )
1119 for( i = 0; i < FRAME_SIZE; i++ )
1121 for( j = 0; j < i_nb_channels; j++ )
1123 p_buf_out[ i*i_nb_channels + pi_chan_table[j]] =
1124 p_buf[i*i_nb_channels + j];