1 /*****************************************************************************
2 * waveout.c : Windows waveOut plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: waveout.c,v 1.16 2003/02/14 17:00:02 ipkiss 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 <string.h> /* strerror() */
28 #include <stdlib.h> /* calloc(), malloc(), free() */
32 #include "aout_internal.h"
37 #define FRAME_SIZE 1024 /* The size is in samples, not in bytes */
40 /*****************************************************************************
42 *****************************************************************************/
44 # define DWORD_PTR DWORD
47 #ifndef WAVE_FORMAT_IEEE_FLOAT
48 # define WAVE_FORMAT_IEEE_FLOAT 0x0003
51 #ifndef WAVE_FORMAT_DOLBY_AC3_SPDIF
52 # define WAVE_FORMAT_DOLBY_AC3_SPDIF 0x0092
55 #ifndef WAVE_FORMAT_EXTENSIBLE
56 #define WAVE_FORMAT_EXTENSIBLE 0xFFFE
59 #ifndef SPEAKER_FRONT_LEFT
60 # define SPEAKER_FRONT_LEFT 0x1
61 # define SPEAKER_FRONT_RIGHT 0x2
62 # define SPEAKER_FRONT_CENTER 0x4
63 # define SPEAKER_LOW_FREQUENCY 0x8
64 # define SPEAKER_BACK_LEFT 0x10
65 # define SPEAKER_BACK_RIGHT 0x20
66 # define SPEAKER_FRONT_LEFT_OF_CENTER 0x40
67 # define SPEAKER_FRONT_RIGHT_OF_CENTER 0x80
68 # define SPEAKER_BACK_CENTER 0x100
69 # define SPEAKER_SIDE_LEFT 0x200
70 # define SPEAKER_SIDE_RIGHT 0x400
71 # define SPEAKER_TOP_CENTER 0x800
72 # define SPEAKER_TOP_FRONT_LEFT 0x1000
73 # define SPEAKER_TOP_FRONT_CENTER 0x2000
74 # define SPEAKER_TOP_FRONT_RIGHT 0x4000
75 # define SPEAKER_TOP_BACK_LEFT 0x8000
76 # define SPEAKER_TOP_BACK_CENTER 0x10000
77 # define SPEAKER_TOP_BACK_RIGHT 0x20000
78 # define SPEAKER_RESERVED 0x80000000
81 #ifndef _WAVEFORMATEXTENSIBLE_
85 WORD wValidBitsPerSample; /* bits of precision */
86 WORD wSamplesPerBlock; /* valid if wBitsPerSample==0 */
87 WORD wReserved; /* If neither applies, set to zero. */
89 DWORD dwChannelMask; /* which channels are */
90 /* present in stream */
92 } WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
96 #ifndef KSDATAFORMAT_SUBTYPE_IEEE_FLOAT
97 DEFINE_GUID( KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, WAVE_FORMAT_IEEE_FLOAT, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
99 #ifndef KSDATAFORMAT_SUBTYPE_PCM
100 DEFINE_GUID( KSDATAFORMAT_SUBTYPE_PCM, WAVE_FORMAT_PCM, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
102 #ifndef KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF
103 DEFINE_GUID( KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF, WAVE_FORMAT_DOLBY_AC3_SPDIF, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
106 /*****************************************************************************
108 *****************************************************************************/
109 static int Open ( vlc_object_t * );
110 static void Close ( vlc_object_t * );
111 static void Play ( aout_instance_t * );
113 /* local functions */
114 static void Probe ( aout_instance_t * );
115 static int OpenWaveOut ( aout_instance_t *, int, int, int, int, vlc_bool_t );
116 static int OpenWaveOutPCM( aout_instance_t *, int*, int, int, int, vlc_bool_t );
117 static void CheckReordering( aout_instance_t *, int );
118 static int PlayWaveOut ( aout_instance_t *, HWAVEOUT, WAVEHDR *,
121 static void CALLBACK WaveOutCallback ( HWAVEOUT, UINT, DWORD, DWORD, DWORD );
123 static void InterleaveFloat32( float *, int *, int );
124 static void InterleaveS16( int16_t *, int *, int );
126 /*****************************************************************************
128 *****************************************************************************/
130 set_description( _("Win32 waveOut extension module") );
131 set_capability( "audio output", 100 );
132 set_callbacks( Open, Close );
135 /*****************************************************************************
136 * aout_sys_t: waveOut audio output method descriptor
137 *****************************************************************************
138 * This structure is part of the audio output thread descriptor.
139 * It describes the waveOut specific properties of an audio device.
140 *****************************************************************************/
143 HWAVEOUT h_waveout; /* handle to waveout instance */
145 WAVEFORMATEXTENSIBLE waveformat; /* audio format */
147 WAVEHDR waveheader[FRAMES_NUM];
151 byte_t *p_silence_buffer; /* buffer we use to play silence */
153 vlc_bool_t b_chan_reorder; /* do we need channel reordering */
157 static const uint32_t pi_channels_in[] =
158 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
159 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
160 AOUT_CHAN_CENTER, AOUT_CHAN_LFE };
161 static const uint32_t pi_channels_out[] =
162 { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
163 SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
164 SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY };
165 static const uint32_t pi_channels_ordered[] =
166 { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT, SPEAKER_FRONT_CENTER,
167 SPEAKER_LOW_FREQUENCY,
168 SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT };
170 /*****************************************************************************
171 * Open: open the audio device
172 *****************************************************************************
173 * This function opens and setups Win32 waveOut
174 *****************************************************************************/
175 static int Open( vlc_object_t *p_this )
177 aout_instance_t *p_aout = (aout_instance_t *)p_this;
181 /* Allocate structure */
182 p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
184 if( p_aout->output.p_sys == NULL )
186 msg_Err( p_aout, "out of memory" );
190 p_aout->output.pf_play = Play;
191 p_aout->output.p_sys->pi_chan_table = NULL;
192 p_aout->b_die = VLC_FALSE;
194 if( var_Type( p_aout, "audio-device" ) == 0 )
199 if( var_Get( p_aout, "audio-device", &val ) < 0 )
201 /* Probe() has failed. */
202 free( p_aout->output.p_sys );
206 /* Open the device */
207 if( !strcmp( val.psz_string, N_("A/52 over S/PDIF") ) )
209 p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');
210 free( val.psz_string );
212 if( OpenWaveOut( p_aout, VLC_FOURCC('s','p','d','i'),
213 p_aout->output.output.i_physical_channels,
214 aout_FormatNbChannels( &p_aout->output.output ),
215 p_aout->output.output.i_rate, VLC_FALSE )
218 msg_Err( p_aout, "cannot open waveout audio device" );
219 free( p_aout->output.p_sys );
223 /* Calculate the frame size in bytes */
224 p_aout->output.i_nb_samples = A52_FRAME_NB;
225 p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
226 p_aout->output.output.i_frame_length = A52_FRAME_NB;
227 p_aout->output.p_sys->i_buffer_size =
228 p_aout->output.output.i_bytes_per_frame;
230 aout_VolumeNoneInit( p_aout );
234 if( !strcmp( val.psz_string, N_("5.1") ) )
236 p_aout->output.output.i_physical_channels
237 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
238 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
241 else if( !strcmp( val.psz_string, N_("2 Front 2 Rear") ) )
243 p_aout->output.output.i_physical_channels
244 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
245 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
247 else if( !strcmp( val.psz_string, "Mono" ) )
249 p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
253 p_aout->output.output.i_physical_channels
254 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
256 free( val.psz_string );
258 if( OpenWaveOutPCM( p_aout, &p_aout->output.output.i_format,
259 p_aout->output.output.i_physical_channels,
260 aout_FormatNbChannels( &p_aout->output.output ),
261 p_aout->output.output.i_rate, VLC_FALSE )
264 msg_Err( p_aout, "cannot open waveout audio device" );
265 free( p_aout->output.p_sys );
269 /* Calculate the frame size in bytes */
270 p_aout->output.i_nb_samples = FRAME_SIZE;
271 aout_FormatPrepare( &p_aout->output.output );
272 p_aout->output.p_sys->i_buffer_size = FRAME_SIZE *
273 p_aout->output.output.i_bytes_per_frame;
275 aout_VolumeSoftInit( p_aout );
279 waveOutReset( p_aout->output.p_sys->h_waveout );
281 /* Allocate silence buffer */
282 p_aout->output.p_sys->p_silence_buffer =
283 malloc( p_aout->output.p_sys->i_buffer_size );
284 if( p_aout->output.p_sys->p_silence_buffer == NULL )
286 free( p_aout->output.p_sys );
287 msg_Err( p_aout, "out of memory" );
291 /* Zero the buffer. WinCE doesn't have calloc(). */
292 memset( p_aout->output.p_sys->p_silence_buffer, 0,
293 p_aout->output.p_sys->i_buffer_size );
295 /* We need to kick off the playback in order to have the callback properly
297 for( i = 0; i < FRAMES_NUM; i++ )
299 p_aout->output.p_sys->waveheader[i].dwFlags = WHDR_DONE;
301 PlayWaveOut( p_aout, p_aout->output.p_sys->h_waveout,
302 &p_aout->output.p_sys->waveheader[0], NULL );
307 /*****************************************************************************
308 * Probe: probe the audio device for available formats and channels
309 *****************************************************************************/
310 static void Probe( aout_instance_t * p_aout )
314 unsigned int i_physical_channels;
316 var_Create( p_aout, "audio-device", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
318 /* Test for SPDIF support */
319 if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
321 if( OpenWaveOut( p_aout, VLC_FOURCC('s','p','d','i'),
322 p_aout->output.output.i_physical_channels,
323 aout_FormatNbChannels( &p_aout->output.output ),
324 p_aout->output.output.i_rate, VLC_TRUE )
327 msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
328 val.psz_string = N_("A/52 over S/PDIF");
329 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val );
333 /* Test for 5.1 support */
334 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
335 AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
336 AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE;
337 if( p_aout->output.output.i_physical_channels == i_physical_channels )
339 if( OpenWaveOutPCM( p_aout, &i_format,
340 i_physical_channels, 6,
341 p_aout->output.output.i_rate, VLC_TRUE )
344 val.psz_string = N_("5.1");
345 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val );
348 msg_Dbg( p_aout, "device supports 5.1 channels" );
351 /* Test for 2 Front 2 Rear support */
352 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
353 AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
354 if( p_aout->output.output.i_physical_channels & i_physical_channels )
356 if( OpenWaveOutPCM( p_aout, &i_format,
357 i_physical_channels, 4,
358 p_aout->output.output.i_rate, VLC_TRUE )
361 val.psz_string = N_("2 Front 2 Rear");
362 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val );
365 msg_Dbg( p_aout, "device supports 4 channels" );
368 /* Test for stereo support */
369 i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
370 if( OpenWaveOutPCM( p_aout, &i_format,
371 i_physical_channels, 2,
372 p_aout->output.output.i_rate, VLC_TRUE )
375 val.psz_string = N_("Stereo");
376 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val );
377 var_Set( p_aout, "audio-device", val );
380 msg_Dbg( p_aout, "device supports 2 channels" );
382 /* Test for mono support */
383 i_physical_channels = AOUT_CHAN_CENTER;
384 if( OpenWaveOutPCM( p_aout, &i_format,
385 i_physical_channels, 1,
386 p_aout->output.output.i_rate, VLC_TRUE )
389 val.psz_string = N_("Mono");
390 var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val );
393 msg_Dbg( p_aout, "device supports 1 channel" );
395 var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
397 val.b_bool = VLC_TRUE;
398 var_Set( p_aout, "intf-change", val );
401 /*****************************************************************************
402 * Play: play a sound buffer
403 *****************************************************************************
404 * This doesn't actually play the buffer. This just stores the buffer so it
405 * can be played by the callback thread.
406 *****************************************************************************/
407 static void Play( aout_instance_t *p_aout )
411 /*****************************************************************************
412 * Close: close the audio device
413 *****************************************************************************/
414 static void Close( vlc_object_t *p_this )
416 aout_instance_t *p_aout = (aout_instance_t *)p_this;
418 /* Before calling waveOutClose we must reset the device */
419 p_aout->b_die = VLC_TRUE;
421 /* Wait for the waveout buffers to be freed */
425 vlc_bool_t b_not_done = VLC_FALSE;
427 for( i = 0; i < FRAMES_NUM; i++ )
429 if( !(p_aout->output.p_sys->waveheader[i].dwFlags & WHDR_DONE) )
430 b_not_done = VLC_TRUE;
439 waveOutReset( p_aout->output.p_sys->h_waveout );
441 /* Close the device */
442 if( waveOutClose( p_aout->output.p_sys->h_waveout ) != MMSYSERR_NOERROR )
444 msg_Err( p_aout, "waveOutClose failed" );
447 free( p_aout->output.p_sys->p_silence_buffer );
448 if( p_aout->output.p_sys->pi_chan_table )
449 free( p_aout->output.p_sys->pi_chan_table );
450 free( p_aout->output.p_sys );
453 /*****************************************************************************
454 * OpenWaveOut: open the waveout sound device
455 ****************************************************************************/
456 static int OpenWaveOut( aout_instance_t *p_aout, int i_format,
457 int i_channels, int i_nb_channels, int i_rate,
463 /* Set sound format */
465 #define waveformat p_aout->output.p_sys->waveformat
467 waveformat.dwChannelMask = 0;
468 for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
470 if( i_channels & pi_channels_in[i] )
471 waveformat.dwChannelMask |= pi_channels_out[i];
476 case VLC_FOURCC('s','p','d','i'):
478 waveformat.Format.wBitsPerSample = 16;
479 waveformat.Samples.wValidBitsPerSample =
480 waveformat.Format.wBitsPerSample;
481 waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
482 waveformat.SubFormat = KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
485 case VLC_FOURCC('f','l','3','2'):
486 waveformat.Format.wBitsPerSample = sizeof(float) * 8;
487 waveformat.Samples.wValidBitsPerSample =
488 waveformat.Format.wBitsPerSample;
489 waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
490 waveformat.SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
493 case VLC_FOURCC('s','1','6','l'):
494 waveformat.Format.wBitsPerSample = 16;
495 waveformat.Samples.wValidBitsPerSample =
496 waveformat.Format.wBitsPerSample;
497 waveformat.Format.wFormatTag = WAVE_FORMAT_PCM;
498 waveformat.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
502 waveformat.Format.nChannels = i_nb_channels;
503 waveformat.Format.nSamplesPerSec = i_rate;
504 waveformat.Format.nBlockAlign =
505 waveformat.Format.wBitsPerSample / 8 * i_nb_channels;
506 waveformat.Format.nAvgBytesPerSec =
507 waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign;
509 /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */
510 if( i_nb_channels <= 2 )
512 waveformat.Format.cbSize = 0;
516 waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
517 waveformat.Format.cbSize =
518 sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
521 /* Open the device */
522 result = waveOutOpen( &p_aout->output.p_sys->h_waveout, WAVE_MAPPER,
523 (WAVEFORMATEX *)&waveformat,
524 (DWORD_PTR)WaveOutCallback, (DWORD_PTR)p_aout,
525 CALLBACK_FUNCTION | (b_probe?WAVE_FORMAT_QUERY:0) );
526 if( result == WAVERR_BADFORMAT )
528 msg_Warn( p_aout, "waveOutOpen failed WAVERR_BADFORMAT" );
531 if( result == MMSYSERR_ALLOCATED )
533 msg_Warn( p_aout, "waveOutOpen failed WAVERR_ALLOCATED" );
536 if( result != MMSYSERR_NOERROR )
538 msg_Warn( p_aout, "waveOutOpen failed" );
542 CheckReordering( p_aout, i_nb_channels );
550 /*****************************************************************************
551 * OpenWaveOutPCM: open a PCM waveout sound device
552 ****************************************************************************/
553 static int OpenWaveOutPCM( aout_instance_t *p_aout, int *i_format,
554 int i_channels, int i_nb_channels, int i_rate,
557 if( OpenWaveOut( p_aout, VLC_FOURCC('f','l','3','2'),
558 i_channels, i_nb_channels, i_rate, b_probe )
561 if ( OpenWaveOut( p_aout, VLC_FOURCC('s','1','6','l'),
562 i_channels, i_nb_channels, i_rate, b_probe )
569 *i_format = VLC_FOURCC('s','1','6','l');
575 *i_format = VLC_FOURCC('f','l','3','2');
580 /*****************************************************************************
581 * CheckReordering: Check if we need to do some channel re-ordering (the ac3
582 * channel order is different from the one chosen by
584 *****************************************************************************/
585 static void CheckReordering( aout_instance_t *p_aout, int i_nb_channels )
589 #define waveformat p_aout->output.p_sys->waveformat
590 #define pi_chan_table p_aout->output.p_sys->pi_chan_table
592 p_aout->output.p_sys->b_chan_reorder = VLC_FALSE;
594 pi_chan_table = malloc( i_nb_channels * sizeof(int) );
601 i < (int)(sizeof(pi_channels_out)/sizeof(uint32_t)); i++ )
603 if( waveformat.dwChannelMask & pi_channels_out[i] )
606 pi_channels_out[i] != pi_channels_ordered[k]; k++ )
608 if( waveformat.dwChannelMask & pi_channels_ordered[k] )
614 pi_chan_table[j] = l;
620 for( i = 0; i < i_nb_channels; i++ )
622 if( pi_chan_table[i] != i )
624 p_aout->output.p_sys->b_chan_reorder = VLC_TRUE;
628 if( p_aout->output.p_sys->b_chan_reorder )
630 msg_Dbg( p_aout, "channel reordering needed" );
637 /*****************************************************************************
638 * PlayWaveOut: play a buffer through the WaveOut device
639 *****************************************************************************/
640 static int PlayWaveOut( aout_instance_t *p_aout, HWAVEOUT h_waveout,
641 WAVEHDR *p_waveheader, aout_buffer_t *p_buffer )
645 /* Prepare the buffer */
646 if( p_buffer != NULL )
647 p_waveheader->lpData = p_buffer->p_buffer;
649 /* Use silence buffer instead */
650 p_waveheader->lpData = p_aout->output.p_sys->p_silence_buffer;
652 p_waveheader->dwUser = (DWORD_PTR)p_buffer;
653 p_waveheader->dwBufferLength = p_aout->output.p_sys->i_buffer_size;
654 p_waveheader->dwFlags = 0;
656 result = waveOutPrepareHeader( h_waveout, p_waveheader, sizeof(WAVEHDR) );
657 if( result != MMSYSERR_NOERROR )
659 msg_Err( p_aout, "waveOutPrepareHeader failed" );
663 /* Send the buffer to the waveOut queue */
664 result = waveOutWrite( h_waveout, p_waveheader, sizeof(WAVEHDR) );
665 if( result != MMSYSERR_NOERROR )
667 msg_Err( p_aout, "waveOutWrite failed" );
674 /*****************************************************************************
675 * WaveOutCallback: what to do once WaveOut has played its sound samples
676 *****************************************************************************/
677 static void CALLBACK WaveOutCallback( HWAVEOUT h_waveout, UINT uMsg,
679 DWORD dwParam1, DWORD dwParam2 )
681 aout_instance_t *p_aout = (aout_instance_t *)_p_aout;
682 WAVEHDR *p_waveheader = (WAVEHDR *)dwParam1;
683 aout_buffer_t *p_buffer = NULL;
685 int i, i_queued_frames = 0;
687 if( uMsg != WOM_DONE ) return;
689 /* Unprepare and free the buffer which has just been played */
690 waveOutUnprepareHeader( h_waveout, p_waveheader, sizeof(WAVEHDR) );
691 if( p_waveheader->dwUser )
692 aout_BufferFree( (aout_buffer_t *)p_waveheader->dwUser );
694 if( p_aout->b_die ) return;
696 /* We don't want any resampling when using S/PDIF */
697 b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i');
699 /* Find out the current latency */
700 for( i = 0; i < FRAMES_NUM; i++ )
702 /* Check if frame buf is available */
703 if( !(p_aout->output.p_sys->waveheader[i].dwFlags & WHDR_DONE) )
709 /* Try to fill in as many frame buffers as possible */
710 for( i = 0; i < FRAMES_NUM; i++ )
712 /* Check if frame buf is available */
713 if( p_aout->output.p_sys->waveheader[i].dwFlags & WHDR_DONE )
715 /* Take into account the latency */
716 p_buffer = aout_OutputNextBuffer( p_aout,
717 mdate() + 1000000 * i_queued_frames /
718 p_aout->output.output.i_rate * p_aout->output.i_nb_samples,
721 if( !p_buffer && i_queued_frames )
723 /* We aren't late so no need to play a blank sample */
727 /* Do the channel reordering here */
728 if( p_buffer && p_aout->output.p_sys->b_chan_reorder )
730 if( p_aout->output.output.i_format ==
731 VLC_FOURCC('s','1','6','l') )
732 InterleaveS16( (int16_t *)p_buffer->p_buffer,
733 p_aout->output.p_sys->pi_chan_table,
734 aout_FormatNbChannels( &p_aout->output.output ) );
736 InterleaveFloat32( (float *)p_buffer->p_buffer,
737 p_aout->output.p_sys->pi_chan_table,
738 aout_FormatNbChannels( &p_aout->output.output ) );
741 PlayWaveOut( p_aout, h_waveout,
742 &p_aout->output.p_sys->waveheader[i] , p_buffer );
749 static void InterleaveFloat32( float *p_buf, int *pi_chan_table,
755 for( i = 0; i < FRAME_SIZE; i++ )
757 for( j = 0; j < i_nb_channels; j++ )
759 p_tmp[pi_chan_table[j]] = p_buf[i*i_nb_channels + j];
762 memcpy( &p_buf[i*i_nb_channels], p_tmp,
763 i_nb_channels * sizeof(float) );
767 static void InterleaveS16( int16_t *p_buf, int *pi_chan_table,
773 for( i = 0; i < FRAME_SIZE; i++ )
775 for( j = 0; j < i_nb_channels; j++ )
777 p_tmp[pi_chan_table[j]] = p_buf[i*i_nb_channels + j];
780 memcpy( &p_buf[i*i_nb_channels], p_tmp,
781 i_nb_channels * sizeof(int16_t) );