1 /*****************************************************************************
2 * directx.c: Windows DirectX audio output method
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
7 * Authors: Gildas Bazin <gbazin@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <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 */
168 int pi_chan_table[AOUT_CHAN_MAX];
169 uint32_t i_channel_mask;
170 uint32_t i_bits_per_sample;
174 static const uint32_t pi_channels_src[] =
175 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
176 AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT,
177 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
178 AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
179 static const uint32_t pi_channels_in[] =
180 { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
181 SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT,
182 SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
183 SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY, 0 };
184 static const uint32_t pi_channels_out[] =
185 { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
186 SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY,
187 SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
188 SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT, 0 };
190 /*****************************************************************************
192 *****************************************************************************/
193 static int OpenAudio ( vlc_object_t * );
194 static void CloseAudio ( vlc_object_t * );
195 static void Play ( aout_instance_t * );
197 /* local functions */
198 static void Probe ( aout_instance_t * );
199 static int InitDirectSound ( aout_instance_t * );
200 static int CreateDSBuffer ( aout_instance_t *, int, int, int, int, int, vlc_bool_t );
201 static int CreateDSBufferPCM ( aout_instance_t *, int*, int, int, int, vlc_bool_t );
202 static void DestroyDSBuffer ( aout_instance_t * );
203 static void DirectSoundThread ( notification_thread_t * );
204 static int FillBuffer ( aout_instance_t *, int, aout_buffer_t * );
206 /*****************************************************************************
208 *****************************************************************************/
210 set_description( _("DirectX audio output") );
211 set_capability( "audio output", 100 );
212 set_category( CAT_AUDIO );
213 set_subcategory( SUBCAT_AUDIO_AOUT );
214 add_shortcut( "directx" );
215 set_callbacks( OpenAudio, CloseAudio );
218 /*****************************************************************************
219 * OpenAudio: open the audio device
220 *****************************************************************************
221 * This function opens and setups Direct Sound.
222 *****************************************************************************/
223 static int OpenAudio( vlc_object_t *p_this )
225 aout_instance_t * p_aout = (aout_instance_t *)p_this;
229 msg_Dbg( p_aout, "OpenAudio" );
231 /* Allocate structure */
232 p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
233 if( p_aout->output.p_sys == NULL )
235 msg_Err( p_aout, "out of memory" );
239 /* Initialize some variables */
240 p_aout->output.p_sys->p_dsobject = NULL;
241 p_aout->output.p_sys->p_dsbuffer = NULL;
242 p_aout->output.p_sys->p_dsnotify = NULL;
243 p_aout->output.p_sys->p_notif = NULL;
244 p_aout->output.p_sys->b_playing = 0;
246 p_aout->output.pf_play = Play;
247 aout_VolumeSoftInit( p_aout );
249 /* Initialise DirectSound */
250 if( InitDirectSound( p_aout ) )
252 msg_Err( p_aout, "cannot initialize DirectSound" );
256 if( var_Type( p_aout, "audio-device" ) == 0 )
261 if( var_Get( p_aout, "audio-device", &val ) < 0 )
263 /* Probe() has failed. */
267 /* Now we need to setup our DirectSound play notification structure */
268 p_aout->output.p_sys->p_notif =
269 vlc_object_create( p_aout, sizeof(notification_thread_t) );
270 p_aout->output.p_sys->p_notif->p_aout = p_aout;
272 /* Then create the notification events */
273 for( i = 0; i < FRAMES_NUM; i++ )
274 p_aout->output.p_sys->p_notif->p_events[i].hEventNotify =
275 CreateEvent( NULL, FALSE, FALSE, NULL );
277 /* Open the device */
278 if( val.i_int == AOUT_VAR_SPDIF )
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 directx audio device" );
297 free( p_aout->output.p_sys );
301 aout_VolumeNoneInit( p_aout );
305 if( val.i_int == AOUT_VAR_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( val.i_int == AOUT_VAR_3F2R )
314 p_aout->output.output.i_physical_channels
315 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
316 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
318 else if( val.i_int == AOUT_VAR_2F2R )
320 p_aout->output.output.i_physical_channels
321 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
322 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
324 else if( val.i_int == AOUT_VAR_MONO )
326 p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
330 p_aout->output.output.i_physical_channels
331 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
334 if( CreateDSBufferPCM( p_aout, &p_aout->output.output.i_format,
335 p_aout->output.output.i_physical_channels,
336 aout_FormatNbChannels( &p_aout->output.output ),
337 p_aout->output.output.i_rate, VLC_FALSE )
340 msg_Err( p_aout, "cannot open directx audio device" );
341 free( p_aout->output.p_sys );
345 /* Calculate the frame size in bytes */
346 p_aout->output.i_nb_samples = FRAME_SIZE;
347 aout_FormatPrepare( &p_aout->output.output );
348 p_aout->output.p_sys->i_frame_size =
349 FRAME_SIZE * p_aout->output.output.i_bytes_per_frame;
351 aout_VolumeSoftInit( p_aout );
354 /* then launch the notification thread */
355 msg_Dbg( p_aout, "creating DirectSoundThread" );
356 if( vlc_thread_create( p_aout->output.p_sys->p_notif,
357 "DirectSound Notification Thread",
359 VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
361 msg_Err( p_aout, "cannot create DirectSoundThread" );
365 vlc_object_attach( p_aout->output.p_sys->p_notif, p_aout );
370 CloseAudio( VLC_OBJECT(p_aout) );
374 /*****************************************************************************
375 * Probe: probe the audio device for available formats and channels
376 *****************************************************************************/
377 static void Probe( aout_instance_t * p_aout )
379 vlc_value_t val, text;
381 unsigned int i_physical_channels;
382 DWORD ui_speaker_config;
384 var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
385 text.psz_string = _("Audio Device");
386 var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
388 /* Test for 5.1 support */
389 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
390 AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
391 AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE;
392 if( p_aout->output.output.i_physical_channels == i_physical_channels )
394 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 6,
395 p_aout->output.output.i_rate, VLC_TRUE )
398 val.i_int = AOUT_VAR_5_1;
399 text.psz_string = N_("5.1");
400 var_Change( p_aout, "audio-device",
401 VLC_VAR_ADDCHOICE, &val, &text );
402 msg_Dbg( p_aout, "device supports 5.1 channels" );
406 /* Test for 3 Front 2 Rear support */
407 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
408 AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
410 if( p_aout->output.output.i_physical_channels == i_physical_channels )
412 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 5,
413 p_aout->output.output.i_rate, VLC_TRUE )
416 val.i_int = AOUT_VAR_3F2R;
417 text.psz_string = N_("3 Front 2 Rear");
418 var_Change( p_aout, "audio-device",
419 VLC_VAR_ADDCHOICE, &val, &text );
420 msg_Dbg( p_aout, "device supports 5 channels" );
424 /* Test for 2 Front 2 Rear support */
425 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
426 AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
427 if( ( p_aout->output.output.i_physical_channels & i_physical_channels )
428 == i_physical_channels )
430 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 4,
431 p_aout->output.output.i_rate, VLC_TRUE )
434 val.i_int = AOUT_VAR_2F2R;
435 text.psz_string = N_("2 Front 2 Rear");
436 var_Change( p_aout, "audio-device",
437 VLC_VAR_ADDCHOICE, &val, &text );
438 msg_Dbg( p_aout, "device supports 4 channels" );
442 /* Test for stereo support */
443 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
444 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 2,
445 p_aout->output.output.i_rate, VLC_TRUE )
448 val.i_int = AOUT_VAR_STEREO;
449 text.psz_string = N_("Stereo");
450 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
451 var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
452 msg_Dbg( p_aout, "device supports 2 channels" );
455 /* Test for mono support */
456 i_physical_channels = AOUT_CHAN_CENTER;
457 if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 1,
458 p_aout->output.output.i_rate, VLC_TRUE )
461 val.i_int = AOUT_VAR_MONO;
462 text.psz_string = N_("Mono");
463 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
464 msg_Dbg( p_aout, "device supports 1 channel" );
467 /* Check the speaker configuration to determine which channel config should
469 if FAILED( IDirectSound_GetSpeakerConfig( p_aout->output.p_sys->p_dsobject,
470 &ui_speaker_config ) )
472 ui_speaker_config = DSSPEAKER_STEREO;
474 switch( DSSPEAKER_CONFIG(ui_speaker_config) )
476 case DSSPEAKER_5POINT1:
477 val.i_int = AOUT_VAR_5_1;
480 val.i_int = AOUT_VAR_2F2R;
482 #if 0 /* Lots of people just get their settings wrong and complain that
483 * this is a problem with VLC so just don't ever set mono by default. */
485 val.i_int = AOUT_VAR_MONO;
488 case DSSPEAKER_SURROUND:
489 case DSSPEAKER_STEREO:
491 val.i_int = AOUT_VAR_STEREO;
494 var_Set( p_aout, "audio-device", val );
496 /* Test for SPDIF support */
497 if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
499 if( CreateDSBuffer( p_aout, VLC_FOURCC('s','p','d','i'),
500 p_aout->output.output.i_physical_channels,
501 aout_FormatNbChannels( &p_aout->output.output ),
502 p_aout->output.output.i_rate,
503 AOUT_SPDIF_SIZE, VLC_TRUE )
506 msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
507 val.i_int = AOUT_VAR_SPDIF;
508 text.psz_string = N_("A/52 over S/PDIF");
509 var_Change( p_aout, "audio-device",
510 VLC_VAR_ADDCHOICE, &val, &text );
511 if( config_GetInt( p_aout, "spdif" ) )
512 var_Set( p_aout, "audio-device", val );
516 var_Change( p_aout, "audio-device", VLC_VAR_CHOICESCOUNT, &val, NULL );
519 /* Probe() has failed. */
520 var_Destroy( p_aout, "audio-device" );
524 var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
526 val.b_bool = VLC_TRUE;
527 var_Set( p_aout, "intf-change", val );
530 /*****************************************************************************
531 * Play: we'll start playing the directsound buffer here because at least here
532 * we know the first buffer has been put in the aout fifo and we also
534 *****************************************************************************/
535 static void Play( aout_instance_t *p_aout )
537 if( !p_aout->output.p_sys->b_playing )
539 aout_buffer_t *p_buffer;
541 p_aout->output.p_sys->b_playing = 1;
543 /* get the playing date of the first aout buffer */
544 p_aout->output.p_sys->p_notif->start_date =
545 aout_FifoFirstDate( p_aout, &p_aout->output.fifo );
547 /* fill in the first samples */
548 p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
549 FillBuffer( p_aout, 0, p_buffer );
551 /* wake up the audio output thread */
552 SetEvent( p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );
556 /*****************************************************************************
557 * CloseAudio: close the audio device
558 *****************************************************************************/
559 static void CloseAudio( vlc_object_t *p_this )
561 aout_instance_t * p_aout = (aout_instance_t *)p_this;
562 aout_sys_t *p_sys = p_aout->output.p_sys;
564 msg_Dbg( p_aout, "CloseAudio" );
566 /* kill the position notification thread, if any */
569 vlc_object_detach( p_sys->p_notif );
570 if( p_sys->p_notif->b_thread )
572 p_sys->p_notif->b_die = 1;
574 if( !p_sys->b_playing )
575 /* wake up the audio thread */
576 SetEvent( p_sys->p_notif->p_events[0].hEventNotify );
578 vlc_thread_join( p_sys->p_notif );
580 vlc_object_destroy( p_sys->p_notif );
583 /* release the secondary buffer */
584 DestroyDSBuffer( p_aout );
586 /* finally release the DirectSound object */
587 if( p_sys->p_dsobject ) IDirectSound_Release( p_sys->p_dsobject );
589 /* free DSOUND.DLL */
590 if( p_sys->hdsound_dll ) FreeLibrary( p_sys->hdsound_dll );
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_src)/sizeof(uint32_t); i++ )
680 if( i_channels & pi_channels_src[i] )
681 waveformat.dwChannelMask |= pi_channels_in[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 p_aout->output.p_sys->i_bits_per_sample = waveformat.Format.wBitsPerSample;
722 p_aout->output.p_sys->i_channels = i_nb_channels;
724 /* Then fill in the direct sound descriptor */
725 memset(&dsbdesc, 0, sizeof(DSBUFFERDESC));
726 dsbdesc.dwSize = sizeof(DSBUFFERDESC);
727 dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2/* Better position accuracy */
728 | DSBCAPS_CTRLPOSITIONNOTIFY /* We need notification */
729 | DSBCAPS_GLOBALFOCUS; /* Allows background playing */
731 /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */
732 if( i_nb_channels <= 2 )
734 waveformat.Format.cbSize = 0;
738 waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
739 waveformat.Format.cbSize =
740 sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
742 /* Needed for 5.1 on emu101k */
743 dsbdesc.dwFlags |= DSBCAPS_LOCHARDWARE;
746 dsbdesc.dwBufferBytes = FRAMES_NUM * i_bytes_per_frame; /* buffer size */
747 dsbdesc.lpwfxFormat = (WAVEFORMATEX *)&waveformat;
749 if FAILED( IDirectSound_CreateSoundBuffer(
750 p_aout->output.p_sys->p_dsobject, &dsbdesc,
751 &p_aout->output.p_sys->p_dsbuffer, NULL) )
753 if( dsbdesc.dwFlags & DSBCAPS_LOCHARDWARE )
755 /* Try without DSBCAPS_LOCHARDWARE */
756 dsbdesc.dwFlags &= ~DSBCAPS_LOCHARDWARE;
757 if FAILED( IDirectSound_CreateSoundBuffer(
758 p_aout->output.p_sys->p_dsobject, &dsbdesc,
759 &p_aout->output.p_sys->p_dsbuffer, NULL) )
764 msg_Dbg( p_aout, "couldn't use hardware sound buffer" );
772 /* Stop here if we were just probing */
775 IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
776 p_aout->output.p_sys->p_dsbuffer = NULL;
780 /* Backup the size of a frame */
781 p_aout->output.p_sys->p_notif->i_frame_size = i_bytes_per_frame;
783 /* Now the secondary buffer is created, we need to setup its position
785 for( i = 0; i < FRAMES_NUM; i++ )
787 p_aout->output.p_sys->p_notif->p_events[i].dwOffset = i *
788 p_aout->output.p_sys->p_notif->i_frame_size;
790 p_aout->output.p_sys->p_notif->i_frame_status[i] = FRAME_EMPTY;
793 /* Get the IDirectSoundNotify interface */
794 if FAILED( IDirectSoundBuffer_QueryInterface(
795 p_aout->output.p_sys->p_dsbuffer,
796 &IID_IDirectSoundNotify,
797 (LPVOID *)&p_aout->output.p_sys->p_dsnotify ) )
799 msg_Err( p_aout, "cannot get IDirectSoundNotify interface" );
803 if FAILED( IDirectSoundNotify_SetNotificationPositions(
804 p_aout->output.p_sys->p_dsnotify,
806 p_aout->output.p_sys->p_notif->p_events ) )
808 msg_Err( p_aout, "cannot set position notification" );
812 p_aout->output.p_sys->i_channel_mask = waveformat.dwChannelMask;
814 p_aout->output.p_sys->b_chan_reorder =
815 aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
816 waveformat.dwChannelMask, i_nb_channels,
817 p_aout->output.p_sys->pi_chan_table );
819 if( p_aout->output.p_sys->b_chan_reorder )
821 msg_Dbg( p_aout, "channel reordering needed" );
827 DestroyDSBuffer( p_aout );
831 /*****************************************************************************
832 * CreateDSBufferPCM: creates a PCM direct sound buffer.
833 *****************************************************************************
834 * We first try to create a WAVE_FORMAT_IEEE_FLOAT buffer if supported by
835 * the hardware, otherwise we create a WAVE_FORMAT_PCM buffer.
836 ****************************************************************************/
837 static int CreateDSBufferPCM( aout_instance_t *p_aout, int *i_format,
838 int i_channels, int i_nb_channels, int i_rate,
841 /* Float32 audio samples are not supported for 5.1 output on the emu101k */
843 if( i_nb_channels > 2 ||
844 CreateDSBuffer( p_aout, VLC_FOURCC('f','l','3','2'),
845 i_channels, i_nb_channels, i_rate,
846 FRAME_SIZE * 4 * i_nb_channels, b_probe )
849 if ( CreateDSBuffer( p_aout, VLC_FOURCC('s','1','6','l'),
850 i_channels, i_nb_channels, i_rate,
851 FRAME_SIZE * 2 * i_nb_channels, b_probe )
858 *i_format = VLC_FOURCC('s','1','6','l');
864 *i_format = VLC_FOURCC('f','l','3','2');
869 /*****************************************************************************
871 *****************************************************************************
872 * This function destroys the secondary buffer.
873 *****************************************************************************/
874 static void DestroyDSBuffer( aout_instance_t *p_aout )
876 if( p_aout->output.p_sys->p_dsnotify )
878 IDirectSoundNotify_Release( p_aout->output.p_sys->p_dsnotify );
879 p_aout->output.p_sys->p_dsnotify = NULL;
882 if( p_aout->output.p_sys->p_dsbuffer )
884 IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
885 p_aout->output.p_sys->p_dsbuffer = NULL;
889 /*****************************************************************************
890 * FillBuffer: Fill in one of the direct sound frame buffers.
891 *****************************************************************************
892 * Returns VLC_SUCCESS on success.
893 *****************************************************************************/
894 static int FillBuffer( aout_instance_t *p_aout, int i_frame,
895 aout_buffer_t *p_buffer )
897 notification_thread_t *p_notif = p_aout->output.p_sys->p_notif;
898 aout_sys_t *p_sys = p_aout->output.p_sys;
899 void *p_write_position, *p_wrap_around;
900 long l_bytes1, l_bytes2;
903 /* Before copying anything, we have to lock the buffer */
904 dsresult = IDirectSoundBuffer_Lock(
905 p_sys->p_dsbuffer, /* DS buffer */
906 i_frame * p_notif->i_frame_size, /* Start offset */
907 p_notif->i_frame_size, /* Number of bytes */
908 &p_write_position, /* Address of lock start */
909 &l_bytes1, /* Count of bytes locked before wrap around */
910 &p_wrap_around, /* Buffer adress (if wrap around) */
911 &l_bytes2, /* Count of bytes after wrap around */
913 if( dsresult == DSERR_BUFFERLOST )
915 IDirectSoundBuffer_Restore( p_sys->p_dsbuffer );
916 dsresult = IDirectSoundBuffer_Lock(
918 i_frame * p_notif->i_frame_size,
919 p_notif->i_frame_size,
926 if( dsresult != DS_OK )
928 msg_Warn( p_notif, "cannot lock buffer" );
929 if( p_buffer ) aout_BufferFree( p_buffer );
933 if( p_buffer == NULL )
935 memset( p_write_position, 0, l_bytes1 );
939 if( p_sys->b_chan_reorder )
941 /* Do the channel reordering here */
942 aout_ChannelReorder( p_buffer->p_buffer, p_buffer->i_nb_bytes,
943 p_sys->i_channels, p_sys->pi_chan_table,
944 p_sys->i_bits_per_sample );
947 p_aout->p_vlc->pf_memcpy( p_write_position, p_buffer->p_buffer,
949 aout_BufferFree( p_buffer );
952 /* Now the data has been copied, unlock the buffer */
953 IDirectSoundBuffer_Unlock( p_sys->p_dsbuffer, p_write_position, l_bytes1,
954 p_wrap_around, l_bytes2 );
959 /*****************************************************************************
960 * DirectSoundThread: this thread will capture play notification events.
961 *****************************************************************************
962 * We use this thread to emulate a callback mechanism. The thread probes for
963 * event notification and fills up the DS secondary buffer when needed.
964 *****************************************************************************/
965 static void DirectSoundThread( notification_thread_t *p_notif )
967 HANDLE notification_events[FRAMES_NUM];
969 aout_instance_t *p_aout = p_notif->p_aout;
970 int i, i_which_frame, i_last_frame, i_next_frame;
974 for( i = 0; i < FRAMES_NUM; i++ )
975 notification_events[i] = p_notif->p_events[i].hEventNotify;
977 /* We don't want any resampling when using S/PDIF output */
978 b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i');
980 /* Tell the main thread that we are ready */
981 vlc_thread_ready( p_notif );
983 msg_Dbg( p_notif, "DirectSoundThread ready" );
985 /* Wait here until Play() is called */
986 WaitForSingleObject( notification_events[0], INFINITE );
988 if( !p_notif->b_die )
990 mwait( p_notif->start_date - AOUT_PTS_TOLERANCE / 2 );
992 /* start playing the buffer */
993 dsresult = IDirectSoundBuffer_Play( p_aout->output.p_sys->p_dsbuffer,
996 DSBPLAY_LOOPING ); /* Flags */
997 if( dsresult == DSERR_BUFFERLOST )
999 IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
1000 dsresult = IDirectSoundBuffer_Play(
1001 p_aout->output.p_sys->p_dsbuffer,
1004 DSBPLAY_LOOPING ); /* Flags */
1006 if( dsresult != DS_OK )
1008 msg_Err( p_aout, "cannot start playing buffer" );
1012 while( !p_notif->b_die )
1014 aout_buffer_t *p_buffer;
1017 /* wait for the position notification */
1018 i_which_frame = WaitForMultipleObjects( FRAMES_NUM,
1019 notification_events, 0,
1020 INFINITE ) - WAIT_OBJECT_0;
1022 if( p_notif->b_die )
1027 /* We take into account the current latency */
1028 if SUCCEEDED( IDirectSoundBuffer_GetCurrentPosition(
1029 p_aout->output.p_sys->p_dsbuffer,
1030 &l_latency, NULL ) )
1032 if( l_latency > (i_which_frame * FRAME_SIZE)
1033 && l_latency < ((i_which_frame+1) * FRAME_SIZE) )
1035 l_latency = - ( l_latency /
1036 p_aout->output.output.i_bytes_per_frame %
1041 l_latency = FRAME_SIZE - ( l_latency /
1042 p_aout->output.output.i_bytes_per_frame %
1051 /* Mark last frame as empty */
1052 i_last_frame = (i_which_frame + FRAMES_NUM -1) % FRAMES_NUM;
1053 i_next_frame = (i_which_frame + 1) % FRAMES_NUM;
1054 p_notif->i_frame_status[i_last_frame] = FRAME_EMPTY;
1056 /* Try to fill in as many frame buffers as possible */
1057 for( i = i_next_frame; (i % FRAMES_NUM) != i_which_frame; i++ )
1060 /* Check if frame buf is already filled */
1061 if( p_notif->i_frame_status[i % FRAMES_NUM] == FRAME_QUEUED )
1064 p_buffer = aout_OutputNextBuffer( p_aout,
1065 mtime + 1000000 / p_aout->output.output.i_rate *
1066 ((i - i_next_frame + 1) * FRAME_SIZE + l_latency), b_sleek );
1068 /* If there is no audio data available and we have some buffered
1069 * already, then just wait for the next time */
1070 if( !p_buffer && (i != i_next_frame) )
1072 //msg_Err( p_aout, "only %i frame buffers filled!",
1073 // i - i_next_frame );
1077 if( FillBuffer( p_aout, (i%FRAMES_NUM), p_buffer )
1081 /* Mark the frame buffer as QUEUED */
1082 p_notif->i_frame_status[i%FRAMES_NUM] = FRAME_QUEUED;
1087 /* make sure the buffer isn't playing */
1088 IDirectSoundBuffer_Stop( p_aout->output.p_sys->p_dsbuffer );
1090 /* free the events */
1091 for( i = 0; i < FRAMES_NUM; i++ )
1092 CloseHandle( notification_events[i] );
1094 msg_Dbg( p_notif, "DirectSoundThread exiting" );