directx.c 43.3 KB
Newer Older
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 $
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 *
 * Authors: Gildas Bazin <gbazin@netcourrier.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <errno.h>                                                 /* ENOMEM */
#include <fcntl.h>                                       /* open(), O_WRONLY */
#include <string.h>                                            /* strerror() */

#include <stdlib.h>                            /* calloc(), malloc(), free() */

#include <vlc/vlc.h>
#include <vlc/aout.h>
gbazin's avatar
   
gbazin committed
35
#include "aout_internal.h"
36

gbazin's avatar
   
gbazin committed
37
#include <windows.h>
38
39
40
#include <mmsystem.h>
#include <dsound.h>

gbazin's avatar
   
gbazin committed
41
#define FRAME_SIZE 2048              /* The size is in samples, not in bytes */
gbazin's avatar
   
gbazin committed
42
#define FRAMES_NUM 8
gbazin's avatar
   
gbazin committed
43
44
45
46

/* frame buffer status */
#define FRAME_QUEUED 0
#define FRAME_EMPTY 1
gbazin's avatar
   
gbazin committed
47

48
49
50
51
52
53
54
55
/*****************************************************************************
 * DirectSound GUIDs.
 * Defining them here allows us to get rid of the dxguid library during
 * the linking stage.
 *****************************************************************************/
#include <initguid.h>
DEFINE_GUID(IID_IDirectSoundNotify, 0xb0210783, 0x89cd, 0x11d0, 0xaf, 0x8, 0x0, 0xa0, 0xc9, 0x25, 0xcd, 0x16);

gbazin's avatar
   
gbazin committed
56
57
58
59
60
61
62
/*****************************************************************************
 * Useful macros
 *****************************************************************************/
#ifndef WAVE_FORMAT_IEEE_FLOAT
#   define WAVE_FORMAT_IEEE_FLOAT 0x0003
#endif

gbazin's avatar
   
gbazin committed
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
#ifndef WAVE_FORMAT_DOLBY_AC3_SPDIF
#   define WAVE_FORMAT_DOLBY_AC3_SPDIF 0x0092
#endif

#ifndef WAVE_FORMAT_EXTENSIBLE
#define  WAVE_FORMAT_EXTENSIBLE   0xFFFE
#endif

#ifndef SPEAKER_FRONT_LEFT
#   define SPEAKER_FRONT_LEFT             0x1
#   define SPEAKER_FRONT_RIGHT            0x2
#   define SPEAKER_FRONT_CENTER           0x4
#   define SPEAKER_LOW_FREQUENCY          0x8
#   define SPEAKER_BACK_LEFT              0x10
#   define SPEAKER_BACK_RIGHT             0x20
#   define SPEAKER_FRONT_LEFT_OF_CENTER   0x40
#   define SPEAKER_FRONT_RIGHT_OF_CENTER  0x80
#   define SPEAKER_BACK_CENTER            0x100
#   define SPEAKER_SIDE_LEFT              0x200
#   define SPEAKER_SIDE_RIGHT             0x400
#   define SPEAKER_TOP_CENTER             0x800
#   define SPEAKER_TOP_FRONT_LEFT         0x1000
#   define SPEAKER_TOP_FRONT_CENTER       0x2000
#   define SPEAKER_TOP_FRONT_RIGHT        0x4000
#   define SPEAKER_TOP_BACK_LEFT          0x8000
#   define SPEAKER_TOP_BACK_CENTER        0x10000
#   define SPEAKER_TOP_BACK_RIGHT         0x20000
#   define SPEAKER_RESERVED               0x80000000
#endif

gbazin's avatar
   
gbazin committed
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
#ifndef DSSPEAKER_HEADPHONE
#   define DSSPEAKER_HEADPHONE         0x00000001
#endif
#ifndef DSSPEAKER_MONO
#   define DSSPEAKER_MONO              0x00000002
#endif
#ifndef DSSPEAKER_QUAD
#   define DSSPEAKER_QUAD              0x00000003
#endif
#ifndef DSSPEAKER_STEREO
#   define DSSPEAKER_STEREO            0x00000004
#endif
#ifndef DSSPEAKER_SURROUND
#   define DSSPEAKER_SURROUND          0x00000005
#endif
#ifndef DSSPEAKER_5POINT1
#   define DSSPEAKER_5POINT1           0x00000006
#endif

gbazin's avatar
   
gbazin committed
112
113
114
115
116
117
118
119
120
121
122
123
124
125
#ifndef _WAVEFORMATEXTENSIBLE_
typedef struct {
    WAVEFORMATEX    Format;
    union {
        WORD wValidBitsPerSample;       /* bits of precision  */
        WORD wSamplesPerBlock;          /* valid if wBitsPerSample==0 */
        WORD wReserved;                 /* If neither applies, set to zero. */
    } Samples;
    DWORD           dwChannelMask;      /* which channels are */
                                        /* present in stream  */
    GUID            SubFormat;
} WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
#endif

gbazin's avatar
   
gbazin committed
126
127
128
DEFINE_GUID( _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, WAVE_FORMAT_IEEE_FLOAT, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
DEFINE_GUID( _KSDATAFORMAT_SUBTYPE_PCM, WAVE_FORMAT_PCM, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
DEFINE_GUID( _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF, WAVE_FORMAT_DOLBY_AC3_SPDIF, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
gbazin's avatar
   
gbazin committed
129

130
131
132
133
134
135
136
/*****************************************************************************
 * notification_thread_t: DirectX event thread
 *****************************************************************************/
typedef struct notification_thread_t
{
    VLC_COMMON_MEMBERS

gbazin's avatar
   
gbazin committed
137
    aout_instance_t * p_aout;
gbazin's avatar
   
gbazin committed
138
139
140
141
142
    int i_frame_status[FRAMES_NUM];           /* status of each frame buffer */
    DSBPOSITIONNOTIFY p_events[FRAMES_NUM];      /* play notification events */
    int i_frame_size;                         /* Size in bytes of one frame */

    mtime_t start_date;
143
144
145
146
147
148
149
150
151
152
153

} notification_thread_t;

/*****************************************************************************
 * aout_sys_t: directx audio output method descriptor
 *****************************************************************************
 * This structure is part of the audio output thread descriptor.
 * It describes the direct sound specific properties of an audio device.
 *****************************************************************************/
struct aout_sys_t
{
gbazin's avatar
   
gbazin committed
154
    HINSTANCE           hdsound_dll;      /* handle of the opened dsound dll */
155
156
157
158
159
160
    LPDIRECTSOUND       p_dsobject;              /* main Direct Sound object */
    LPDIRECTSOUNDBUFFER p_dsbuffer;   /* the sound buffer we use (direct sound
                                       * takes care of mixing all the
                                       * secondary buffers into the primary) */

    LPDIRECTSOUNDNOTIFY p_dsnotify;         /* the position notify interface */
gbazin's avatar
   
gbazin committed
161
    notification_thread_t *p_notif;                  /* DirectSoundThread id */
162

gbazin's avatar
   
gbazin committed
163
    int b_playing;                                         /* playing status */
164

gbazin's avatar
   
gbazin committed
165
    int i_frame_size;                         /* Size in bytes of one frame */
gbazin's avatar
   
gbazin committed
166

gbazin's avatar
   
gbazin committed
167
168
169
    vlc_bool_t b_chan_reorder;              /* do we need channel reordering */
    int *pi_chan_table;
    uint32_t i_channel_mask;
170
171
};

gbazin's avatar
   
gbazin committed
172
173
174
175
176
177
178
179
180
181
182
183
184
static const uint32_t pi_channels_in[] =
    { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
      AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
      AOUT_CHAN_CENTER, AOUT_CHAN_LFE };
static const uint32_t pi_channels_out[] =
    { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
      SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
      SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY };
static const uint32_t pi_channels_ordered[] =
    { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT, SPEAKER_FRONT_CENTER,
      SPEAKER_LOW_FREQUENCY,
      SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT };

185
186
187
/*****************************************************************************
 * Local prototypes.
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
188
189
190
static int  OpenAudio  ( vlc_object_t * );
static void CloseAudio ( vlc_object_t * );
static void Play       ( aout_instance_t * );
191
192

/* local functions */
gbazin's avatar
   
gbazin committed
193
194
195
196
197
198
199
200
201
static void Probe             ( aout_instance_t * );
static int  InitDirectSound   ( aout_instance_t * );
static int  CreateDSBuffer    ( aout_instance_t *, int, int, int, int, int, vlc_bool_t );
static int  CreateDSBufferPCM ( aout_instance_t *, int*, int, int, int, vlc_bool_t );
static void DestroyDSBuffer   ( aout_instance_t * );
static void DirectSoundThread ( notification_thread_t * );
static int  FillBuffer        ( aout_instance_t *, int, aout_buffer_t * );

static void CheckReordering   ( aout_instance_t *, int );
gbazin's avatar
   
gbazin committed
202
203
static void InterleaveFloat32 ( float *, float *, int *, int );
static void InterleaveS16     ( int16_t *, int16_t *, int *, int );
204

gbazin's avatar
   
gbazin committed
205
206
207
208
/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
vlc_module_begin();
gbazin's avatar
   
gbazin committed
209
    set_description( _("DirectX audio output") );
gbazin's avatar
   
gbazin committed
210
    set_capability( "audio output", 100 );
gbazin's avatar
   
gbazin committed
211
212
213
214
    add_shortcut( "directx" );
    set_callbacks( OpenAudio, CloseAudio );
vlc_module_end();

215
216
217
218
219
/*****************************************************************************
 * OpenAudio: open the audio device
 *****************************************************************************
 * This function opens and setups Direct Sound.
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
220
static int OpenAudio( vlc_object_t *p_this )
221
{
gbazin's avatar
   
gbazin committed
222
    aout_instance_t * p_aout = (aout_instance_t *)p_this;
gbazin's avatar
   
gbazin committed
223
    vlc_value_t val;
gbazin's avatar
   
gbazin committed
224
    int i;
225

gbazin's avatar
   
gbazin committed
226
    msg_Dbg( p_aout, "OpenAudio" );
227
228

   /* Allocate structure */
gbazin's avatar
   
gbazin committed
229
230
    p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
    if( p_aout->output.p_sys == NULL )
231
232
    {
        msg_Err( p_aout, "out of memory" );
233
        return VLC_EGENERIC;
234
235
236
    }

    /* Initialize some variables */
gbazin's avatar
   
gbazin committed
237
238
239
240
    p_aout->output.p_sys->p_dsobject = NULL;
    p_aout->output.p_sys->p_dsbuffer = NULL;
    p_aout->output.p_sys->p_dsnotify = NULL;
    p_aout->output.p_sys->p_notif = NULL;
gbazin's avatar
   
gbazin committed
241
    p_aout->output.p_sys->b_playing = 0;
gbazin's avatar
   
gbazin committed
242
    p_aout->output.p_sys->pi_chan_table = NULL;
gbazin's avatar
   
gbazin committed
243
244

    p_aout->output.pf_play = Play;
245
    aout_VolumeSoftInit( p_aout );
246
247

    /* Initialise DirectSound */
gbazin's avatar
   
gbazin committed
248
    if( InitDirectSound( p_aout ) )
249
    {
gbazin's avatar
   
gbazin committed
250
251
        msg_Err( p_aout, "cannot initialize DirectSound" );
        goto error;
252
253
    }

gbazin's avatar
   
gbazin committed
254
255
256
257
258
259
260
261
    if( var_Type( p_aout, "audio-device" ) == 0 )
    {
        Probe( p_aout );
    }

    if( var_Get( p_aout, "audio-device", &val ) < 0 )
    {
        /* Probe() has failed. */
gbazin's avatar
   
gbazin committed
262
        goto error;
gbazin's avatar
   
gbazin committed
263
264
    }

gbazin's avatar
   
gbazin committed
265
266
267
268
269
    /* Now we need to setup our DirectSound play notification structure */
    p_aout->output.p_sys->p_notif =
        vlc_object_create( p_aout, sizeof(notification_thread_t) );
    p_aout->output.p_sys->p_notif->p_aout = p_aout;

gbazin's avatar
   
gbazin committed
270
    /* Then create the notification events */
gbazin's avatar
   
gbazin committed
271
272
273
    for( i = 0; i < FRAMES_NUM; i++ )
        p_aout->output.p_sys->p_notif->p_events[i].hEventNotify =
            CreateEvent( NULL, FALSE, FALSE, NULL );
274

gbazin's avatar
   
gbazin committed
275
    /* Open the device */
gbazin's avatar
   
gbazin committed
276
    if( val.i_int == AOUT_VAR_SPDIF )
277
    {
gbazin's avatar
   
gbazin committed
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
        p_aout->output.output.i_format = VLC_FOURCC('s','p','d','i');

        /* Calculate the frame size in bytes */
        p_aout->output.i_nb_samples = A52_FRAME_NB;
        p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
        p_aout->output.output.i_frame_length = A52_FRAME_NB;
        p_aout->output.p_sys->i_frame_size =
            p_aout->output.output.i_bytes_per_frame;

        if( CreateDSBuffer( p_aout, VLC_FOURCC('s','p','d','i'),
                            p_aout->output.output.i_physical_channels,
                            aout_FormatNbChannels( &p_aout->output.output ),
                            p_aout->output.output.i_rate,
                            p_aout->output.p_sys->i_frame_size, VLC_FALSE )
            != VLC_SUCCESS )
        {
gbazin's avatar
   
gbazin committed
294
            msg_Err( p_aout, "cannot open directx audio device" );
gbazin's avatar
   
gbazin committed
295
296
297
298
299
300
301
302
            free( p_aout->output.p_sys );
            return VLC_EGENERIC;
        }

        aout_VolumeNoneInit( p_aout );
    }
    else
    {
gbazin's avatar
   
gbazin committed
303
        if( val.i_int == AOUT_VAR_5_1 )
gbazin's avatar
   
gbazin committed
304
305
306
307
308
309
        {
            p_aout->output.output.i_physical_channels
                = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
                   | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
                   | AOUT_CHAN_LFE;
        }
310
311
312
313
314
315
        else if( val.i_int == AOUT_VAR_3F2R )
        {
            p_aout->output.output.i_physical_channels
                = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
                   | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
        }
gbazin's avatar
   
gbazin committed
316
        else if( val.i_int == AOUT_VAR_2F2R )
gbazin's avatar
   
gbazin committed
317
318
319
320
321
        {
            p_aout->output.output.i_physical_channels
                = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
                   | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
        }
gbazin's avatar
   
gbazin committed
322
        else if( val.i_int == AOUT_VAR_MONO )
gbazin's avatar
   
gbazin committed
323
324
325
326
327
328
329
330
        {
            p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
        }
        else
        {
            p_aout->output.output.i_physical_channels
                = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
        }
331

gbazin's avatar
   
gbazin committed
332
333
334
335
336
        if( CreateDSBufferPCM( p_aout, &p_aout->output.output.i_format,
                               p_aout->output.output.i_physical_channels,
                               aout_FormatNbChannels( &p_aout->output.output ),
                               p_aout->output.output.i_rate, VLC_FALSE )
            != VLC_SUCCESS )
gbazin's avatar
   
gbazin committed
337
        {
gbazin's avatar
   
gbazin committed
338
            msg_Err( p_aout, "cannot open directx audio device" );
gbazin's avatar
   
gbazin committed
339
340
            free( p_aout->output.p_sys );
            return VLC_EGENERIC;
gbazin's avatar
   
gbazin committed
341
        }
gbazin's avatar
   
gbazin committed
342
343
344
345
346
347
348
349

        /* Calculate the frame size in bytes */
        p_aout->output.i_nb_samples = FRAME_SIZE;
        aout_FormatPrepare( &p_aout->output.output );
        p_aout->output.p_sys->i_frame_size =
            FRAME_SIZE * p_aout->output.output.i_bytes_per_frame;

        aout_VolumeSoftInit( p_aout );
gbazin's avatar
   
gbazin committed
350
    }
351

Christophe Massiot's avatar
Christophe Massiot committed
352
353
354
355
    /* then launch the notification thread */
    msg_Dbg( p_aout, "creating DirectSoundThread" );
    if( vlc_thread_create( p_aout->output.p_sys->p_notif,
                           "DirectSound Notification Thread",
gbazin's avatar
   
gbazin committed
356
                           DirectSoundThread,
gbazin's avatar
   
gbazin committed
357
                           VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
Christophe Massiot's avatar
Christophe Massiot committed
358
359
360
361
362
363
364
    {
        msg_Err( p_aout, "cannot create DirectSoundThread" );
        goto error;
    }

    vlc_object_attach( p_aout->output.p_sys->p_notif, p_aout );

gbazin's avatar
   
gbazin committed
365
    return VLC_SUCCESS;
Christophe Massiot's avatar
Christophe Massiot committed
366
367

 error:
gbazin's avatar
   
gbazin committed
368
    CloseAudio( VLC_OBJECT(p_aout) );
369
    return VLC_EGENERIC;
gbazin's avatar
   
gbazin committed
370
371
}

gbazin's avatar
   
gbazin committed
372
373
374
375
376
/*****************************************************************************
 * Probe: probe the audio device for available formats and channels
 *****************************************************************************/
static void Probe( aout_instance_t * p_aout )
{
gbazin's avatar
   
gbazin committed
377
    vlc_value_t val, text;
gbazin's avatar
   
gbazin committed
378
379
380
381
    int i_format;
    unsigned int i_physical_channels;
    DWORD ui_speaker_config;

gbazin's avatar
   
gbazin committed
382
383
384
    var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
    text.psz_string = _("Audio device");
    var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
gbazin's avatar
   
gbazin committed
385
386
387
388
389
390
391
392
393
394
395

    /* Test for 5.1 support */
    i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
                          AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
                          AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE;
    if( p_aout->output.output.i_physical_channels == i_physical_channels )
    {
        if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 6,
                               p_aout->output.output.i_rate, VLC_TRUE )
            == VLC_SUCCESS )
        {
gbazin's avatar
   
gbazin committed
396
397
398
399
            val.i_int = AOUT_VAR_5_1;
            text.psz_string = N_("5.1");
            var_Change( p_aout, "audio-device",
                        VLC_VAR_ADDCHOICE, &val, &text );
gbazin's avatar
   
gbazin committed
400
401
402
403
            msg_Dbg( p_aout, "device supports 5.1 channels" );
        }
    }

404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
    /* Test for 3 Front 2 Rear support */
    i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
                          AOUT_CHAN_CENTER | AOUT_CHAN_REARLEFT |
                          AOUT_CHAN_REARRIGHT;
    if( p_aout->output.output.i_physical_channels == i_physical_channels )
    {
        if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 5,
                               p_aout->output.output.i_rate, VLC_TRUE )
            == VLC_SUCCESS )
        {
            val.i_int = AOUT_VAR_3F2R;
            text.psz_string = N_("3 Front 2 Rear");
            var_Change( p_aout, "audio-device",
                        VLC_VAR_ADDCHOICE, &val, &text );
            msg_Dbg( p_aout, "device supports 5 channels" );
        }
    }

gbazin's avatar
   
gbazin committed
422
423
424
425
426
427
428
429
430
431
    /* Test for 2 Front 2 Rear support */
    i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT |
                          AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
    if( ( p_aout->output.output.i_physical_channels & i_physical_channels )
        == i_physical_channels )
    {
        if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 4,
                               p_aout->output.output.i_rate, VLC_TRUE )
            == VLC_SUCCESS )
        {
gbazin's avatar
   
gbazin committed
432
433
434
435
            val.i_int = AOUT_VAR_2F2R;
            text.psz_string = N_("2 Front 2 Rear");
            var_Change( p_aout, "audio-device",
                        VLC_VAR_ADDCHOICE, &val, &text );
gbazin's avatar
   
gbazin committed
436
437
438
439
440
441
442
443
444
445
            msg_Dbg( p_aout, "device supports 4 channels" );
        }
    }

    /* Test for stereo support */
    i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
    if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 2,
                           p_aout->output.output.i_rate, VLC_TRUE )
        == VLC_SUCCESS )
    {
gbazin's avatar
   
gbazin committed
446
447
448
        val.i_int = AOUT_VAR_STEREO;
        text.psz_string = N_("Stereo");
        var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
449
        var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
gbazin's avatar
   
gbazin committed
450
451
452
453
454
455
456
457
458
        msg_Dbg( p_aout, "device supports 2 channels" );
    }

    /* Test for mono support */
    i_physical_channels = AOUT_CHAN_CENTER;
    if( CreateDSBufferPCM( p_aout, &i_format, i_physical_channels, 1,
                           p_aout->output.output.i_rate, VLC_TRUE )
        == VLC_SUCCESS )
    {
gbazin's avatar
   
gbazin committed
459
460
461
        val.i_int = AOUT_VAR_MONO;
        text.psz_string = N_("Mono");
        var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
gbazin's avatar
   
gbazin committed
462
463
464
465
466
467
468
469
470
471
472
473
474
        msg_Dbg( p_aout, "device supports 1 channel" );
    }

    /* Check the speaker configuration to determine which channel config should
     * be the default */
    if FAILED( IDirectSound_GetSpeakerConfig( p_aout->output.p_sys->p_dsobject,
                                              &ui_speaker_config ) )
    {
        ui_speaker_config = DSSPEAKER_STEREO;
    }
    switch( DSSPEAKER_CONFIG(ui_speaker_config) )
    {
    case DSSPEAKER_5POINT1:
gbazin's avatar
   
gbazin committed
475
        val.i_int = AOUT_VAR_5_1;
gbazin's avatar
   
gbazin committed
476
477
        break;
    case DSSPEAKER_QUAD:
gbazin's avatar
   
gbazin committed
478
        val.i_int = AOUT_VAR_2F2R;
gbazin's avatar
   
gbazin committed
479
480
        break;
    case DSSPEAKER_MONO:
gbazin's avatar
   
gbazin committed
481
        val.i_int = AOUT_VAR_MONO;
gbazin's avatar
   
gbazin committed
482
483
484
485
        break;
    case DSSPEAKER_SURROUND:
    case DSSPEAKER_STEREO:
    default:
gbazin's avatar
   
gbazin committed
486
        val.i_int = AOUT_VAR_STEREO;
gbazin's avatar
   
gbazin committed
487
488
489
490
        break;
    }
    var_Set( p_aout, "audio-device", val );

gbazin's avatar
   
gbazin committed
491
492
493
494
495
496
497
498
499
500
501
    /* Test for SPDIF support */
    if ( AOUT_FMT_NON_LINEAR( &p_aout->output.output ) )
    {
        if( CreateDSBuffer( p_aout, VLC_FOURCC('s','p','d','i'),
                            p_aout->output.output.i_physical_channels,
                            aout_FormatNbChannels( &p_aout->output.output ),
                            p_aout->output.output.i_rate,
                            AOUT_SPDIF_SIZE, VLC_TRUE )
            == VLC_SUCCESS )
        {
            msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
gbazin's avatar
   
gbazin committed
502
503
504
505
            val.i_int = AOUT_VAR_SPDIF;
            text.psz_string = N_("A/52 over S/PDIF");
            var_Change( p_aout, "audio-device",
                        VLC_VAR_ADDCHOICE, &val, &text );
gbazin's avatar
   
gbazin committed
506
507
508
509
510
            if( config_GetInt( p_aout, "spdif" ) )
                var_Set( p_aout, "audio-device", val );
        }
    }

gbazin's avatar
   
gbazin committed
511
512
513
514
515
516
517
518
    var_Change( p_aout, "audio-device", VLC_VAR_CHOICESCOUNT, &val, NULL );
    if( val.i_int <= 0 )
    {
        /* Probe() has failed. */
        var_Destroy( p_aout, "audio-device" );
        return;
    }

gbazin's avatar
   
gbazin committed
519
520
521
522
523
524
    var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );

    val.b_bool = VLC_TRUE;
    var_Set( p_aout, "intf-change", val );
}

gbazin's avatar
   
gbazin committed
525
/*****************************************************************************
gbazin's avatar
   
gbazin committed
526
527
528
 * Play: we'll start playing the directsound buffer here because at least here
 *       we know the first buffer has been put in the aout fifo and we also
 *       know its date.
gbazin's avatar
   
gbazin committed
529
 *****************************************************************************/
530
static void Play( aout_instance_t *p_aout )
gbazin's avatar
   
gbazin committed
531
{
gbazin's avatar
   
gbazin committed
532
533
534
535
536
537
538
539
540
541
542
543
    if( !p_aout->output.p_sys->b_playing )
    {
        aout_buffer_t *p_buffer;

        p_aout->output.p_sys->b_playing = 1;

        /* get the playing date of the first aout buffer */
        p_aout->output.p_sys->p_notif->start_date =
            aout_FifoFirstDate( p_aout, &p_aout->output.fifo );

        /* fill in the first samples */
        p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
gbazin's avatar
   
gbazin committed
544
        FillBuffer( p_aout, 0, p_buffer );
gbazin's avatar
   
gbazin committed
545
546
547
548

        /* wake up the audio output thread */
        SetEvent( p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );
    }
549
550
551
552
553
}

/*****************************************************************************
 * CloseAudio: close the audio device
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
554
static void CloseAudio( vlc_object_t *p_this )
555
{
gbazin's avatar
   
gbazin committed
556
    aout_instance_t * p_aout = (aout_instance_t *)p_this;
557

gbazin's avatar
   
gbazin committed
558
    msg_Dbg( p_aout, "CloseAudio" );
559
560

    /* kill the position notification thread, if any */
gbazin's avatar
   
gbazin committed
561
    if( p_aout->output.p_sys->p_notif )
562
    {
563
        vlc_object_detach( p_aout->output.p_sys->p_notif );
gbazin's avatar
   
gbazin committed
564
565
566
        if( p_aout->output.p_sys->p_notif->b_thread )
        {
            p_aout->output.p_sys->p_notif->b_die = 1;
gbazin's avatar
   
gbazin committed
567
568
569
570
571
572

            if( !p_aout->output.p_sys->b_playing )
                /* wake up the audio thread */
                SetEvent(
                    p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );

gbazin's avatar
   
gbazin committed
573
574
575
            vlc_thread_join( p_aout->output.p_sys->p_notif );
        }
        vlc_object_destroy( p_aout->output.p_sys->p_notif );
576
577
578
    }

    /* release the secondary buffer */
gbazin's avatar
   
gbazin committed
579
    DestroyDSBuffer( p_aout );
580
581

    /* finally release the DirectSound object */
gbazin's avatar
   
gbazin committed
582
583
    if( p_aout->output.p_sys->p_dsobject )
        IDirectSound_Release( p_aout->output.p_sys->p_dsobject );
584
585
    
    /* free DSOUND.DLL */
gbazin's avatar
   
gbazin committed
586
587
    if( p_aout->output.p_sys->hdsound_dll )
       FreeLibrary( p_aout->output.p_sys->hdsound_dll );
588

gbazin's avatar
   
gbazin committed
589
590
591
    if( p_aout->output.p_sys->pi_chan_table )
        free( p_aout->output.p_sys->pi_chan_table );

592
    free( p_aout->output.p_sys );
593
594
595
}

/*****************************************************************************
gbazin's avatar
   
gbazin committed
596
 * InitDirectSound: handle all the gory details of DirectSound initialisation
597
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
598
static int InitDirectSound( aout_instance_t *p_aout )
599
600
601
{
    HRESULT (WINAPI *OurDirectSoundCreate)(LPGUID, LPDIRECTSOUND *, LPUNKNOWN);

gbazin's avatar
   
gbazin committed
602
603
    p_aout->output.p_sys->hdsound_dll = LoadLibrary("DSOUND.DLL");
    if( p_aout->output.p_sys->hdsound_dll == NULL )
604
    {
gbazin's avatar
   
gbazin committed
605
606
        msg_Warn( p_aout, "cannot open DSOUND.DLL" );
        goto error;
607
608
    }

gbazin's avatar
   
gbazin committed
609
610
611
    OurDirectSoundCreate = (void *)GetProcAddress(
                                           p_aout->output.p_sys->hdsound_dll,
                                           "DirectSoundCreate" );
612
613
    if( OurDirectSoundCreate == NULL )
    {
gbazin's avatar
   
gbazin committed
614
615
        msg_Warn( p_aout, "GetProcAddress FAILED" );
        goto error;
616
617
618
    }

    /* Create the direct sound object */
gbazin's avatar
   
gbazin committed
619
620
    if FAILED( OurDirectSoundCreate( NULL, &p_aout->output.p_sys->p_dsobject,
                                     NULL ) )
621
622
    {
        msg_Warn( p_aout, "cannot create a direct sound device" );
gbazin's avatar
   
gbazin committed
623
        goto error;
624
625
626
627
628
629
630
631
632
633
634
635
    }

    /* Set DirectSound Cooperative level, ie what control we want over Windows
     * sound device. In our case, DSSCL_EXCLUSIVE means that we can modify the
     * settings of the primary buffer, but also that only the sound of our
     * application will be hearable when it will have the focus.
     * !!! (this is not really working as intended yet because to set the
     * cooperative level you need the window handle of your application, and
     * I don't know of any easy way to get it. Especially since we might play
     * sound without any video, and so what window handle should we use ???
     * The hack for now is to use the Desktop window handle - it seems to be
     * working */
gbazin's avatar
   
gbazin committed
636
637
638
    if( IDirectSound_SetCooperativeLevel( p_aout->output.p_sys->p_dsobject,
                                          GetDesktopWindow(),
                                          DSSCL_EXCLUSIVE) )
639
640
641
642
    {
        msg_Warn( p_aout, "cannot set direct sound cooperative level" );
    }

gbazin's avatar
   
gbazin committed
643
    return VLC_SUCCESS;
gbazin's avatar
   
gbazin committed
644
645
646
647
648
649
650
651

 error:
    p_aout->output.p_sys->p_dsobject = NULL;
    if( p_aout->output.p_sys->hdsound_dll )
    {
        FreeLibrary( p_aout->output.p_sys->hdsound_dll );
        p_aout->output.p_sys->hdsound_dll = NULL;
    }
gbazin's avatar
   
gbazin committed
652
    return VLC_EGENERIC;
gbazin's avatar
   
gbazin committed
653

654
655
656
}

/*****************************************************************************
gbazin's avatar
   
gbazin committed
657
 * CreateDSBuffer: Creates a direct sound buffer of the required format.
658
659
660
661
662
663
664
665
 *****************************************************************************
 * This function creates the buffer we'll use to play audio.
 * In DirectSound there are two kinds of buffers:
 * - the primary buffer: which is the actual buffer that the soundcard plays
 * - the secondary buffer(s): these buffers are the one actually used by
 *    applications and DirectSound takes care of mixing them into the primary.
 *
 * Once you create a secondary buffer, you cannot change its format anymore so
gbazin's avatar
   
gbazin committed
666
 * you have to release the current one and create another.
667
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
668
669
670
static int CreateDSBuffer( aout_instance_t *p_aout, int i_format,
                           int i_channels, int i_nb_channels, int i_rate,
                           int i_bytes_per_frame, vlc_bool_t b_probe )
671
{
gbazin's avatar
   
gbazin committed
672
    WAVEFORMATEXTENSIBLE waveformat;
673
    DSBUFFERDESC         dsbdesc;
gbazin's avatar
   
gbazin committed
674
    unsigned int         i;
675

gbazin's avatar
   
gbazin committed
676
677
678
    /* First set the sound buffer format */
    waveformat.dwChannelMask = 0;
    for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
gbazin's avatar
   
gbazin committed
679
    {
gbazin's avatar
   
gbazin committed
680
681
        if( i_channels & pi_channels_in[i] )
            waveformat.dwChannelMask |= pi_channels_out[i];
682
    }
gbazin's avatar
   
gbazin committed
683

gbazin's avatar
   
gbazin committed
684
    switch( i_format )
gbazin's avatar
   
gbazin committed
685
    {
gbazin's avatar
   
gbazin committed
686
687
    case VLC_FOURCC('s','p','d','i'):
        i_nb_channels = 2;
gbazin's avatar
   
gbazin committed
688
689
        /* To prevent channel re-ordering */
        waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
gbazin's avatar
   
gbazin committed
690
691
692
693
        waveformat.Format.wBitsPerSample = 16;
        waveformat.Samples.wValidBitsPerSample =
            waveformat.Format.wBitsPerSample;
        waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
gbazin's avatar
   
gbazin committed
694
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
gbazin's avatar
   
gbazin committed
695
        break;
gbazin's avatar
   
gbazin committed
696

gbazin's avatar
   
gbazin committed
697
    case VLC_FOURCC('f','l','3','2'):
gbazin's avatar
   
gbazin committed
698
699
700
701
        waveformat.Format.wBitsPerSample = sizeof(float) * 8;
        waveformat.Samples.wValidBitsPerSample =
            waveformat.Format.wBitsPerSample;
        waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
gbazin's avatar
   
gbazin committed
702
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
gbazin's avatar
   
gbazin committed
703
704
705
706
707
708
709
        break;

    case VLC_FOURCC('s','1','6','l'):
        waveformat.Format.wBitsPerSample = 16;
        waveformat.Samples.wValidBitsPerSample =
            waveformat.Format.wBitsPerSample;
        waveformat.Format.wFormatTag = WAVE_FORMAT_PCM;
gbazin's avatar
   
gbazin committed
710
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_PCM;
gbazin's avatar
   
gbazin committed
711
712
        break;
    }
713

gbazin's avatar
   
gbazin committed
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
    waveformat.Format.nChannels = i_nb_channels;
    waveformat.Format.nSamplesPerSec = i_rate;
    waveformat.Format.nBlockAlign =
        waveformat.Format.wBitsPerSample / 8 * i_nb_channels;
    waveformat.Format.nAvgBytesPerSec =
        waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign;

    /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */
    if( i_nb_channels <= 2 )
    {
        waveformat.Format.cbSize = 0;
    }
    else
    {
        waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
        waveformat.Format.cbSize =
            sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
    }
gbazin's avatar
   
gbazin committed
732

gbazin's avatar
   
gbazin committed
733
734

    /* Then fill in the direct sound descriptor */
gbazin's avatar
   
gbazin committed
735
736
    memset(&dsbdesc, 0, sizeof(DSBUFFERDESC));
    dsbdesc.dwSize = sizeof(DSBUFFERDESC);
737
738
    dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2/* Better position accuracy */
                    | DSBCAPS_CTRLPOSITIONNOTIFY     /* We need notification */
gbazin's avatar
   
gbazin committed
739
740
                    | DSBCAPS_GLOBALFOCUS       /* Allows background playing */
                    | DSBCAPS_LOCHARDWARE;      /* Needed for 5.1 on emu101k */
gbazin's avatar
   
gbazin committed
741
742
743
744
745
746
747
    dsbdesc.dwBufferBytes = FRAMES_NUM * i_bytes_per_frame;   /* buffer size */
    dsbdesc.lpwfxFormat = (WAVEFORMATEX *)&waveformat;

    if FAILED( IDirectSound_CreateSoundBuffer(
                   p_aout->output.p_sys->p_dsobject, &dsbdesc,
                   &p_aout->output.p_sys->p_dsbuffer, NULL) )
    {
gbazin's avatar
   
gbazin committed
748
749
750
751
752
753
754
755
756
        /* Try without DSBCAPS_LOCHARDWARE */
        dsbdesc.dwFlags &= ~DSBCAPS_LOCHARDWARE;
        if FAILED( IDirectSound_CreateSoundBuffer(
                   p_aout->output.p_sys->p_dsobject, &dsbdesc,
                   &p_aout->output.p_sys->p_dsbuffer, NULL) )
        {
            return VLC_EGENERIC;
        }
        if( !b_probe ) msg_Dbg( p_aout, "couldn't use hardware sound buffer" );
757
758
    }

gbazin's avatar
   
gbazin committed
759
760
761
762
763
764
765
    /* Stop here if we were just probing */
    if( b_probe )
    {
        IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
        p_aout->output.p_sys->p_dsbuffer = NULL;
        return VLC_SUCCESS;
    }
gbazin's avatar
   
gbazin committed
766

gbazin's avatar
   
gbazin committed
767
768
    /* Backup the size of a frame */
    p_aout->output.p_sys->p_notif->i_frame_size = i_bytes_per_frame;
769
770
771

    /* Now the secondary buffer is created, we need to setup its position
     * notification */
gbazin's avatar
   
gbazin committed
772
773
774
775
776
777
778
    for( i = 0; i < FRAMES_NUM; i++ )
    {
        p_aout->output.p_sys->p_notif->p_events[i].dwOffset = i *
            p_aout->output.p_sys->p_notif->i_frame_size;

        p_aout->output.p_sys->p_notif->i_frame_status[i] = FRAME_EMPTY;
    }
779
780

    /* Get the IDirectSoundNotify interface */
gbazin's avatar
   
gbazin committed
781
782
783
784
    if FAILED( IDirectSoundBuffer_QueryInterface(
                                p_aout->output.p_sys->p_dsbuffer,
                                &IID_IDirectSoundNotify,
                                (LPVOID *)&p_aout->output.p_sys->p_dsnotify ) )
785
    {
gbazin's avatar
   
gbazin committed
786
        msg_Err( p_aout, "cannot get IDirectSoundNotify interface" );
gbazin's avatar
   
gbazin committed
787
        goto error;
788
    }
gbazin's avatar
   
gbazin committed
789

790
    if FAILED( IDirectSoundNotify_SetNotificationPositions(
gbazin's avatar
   
gbazin committed
791
792
                                    p_aout->output.p_sys->p_dsnotify,
                                    FRAMES_NUM,
gbazin's avatar
   
gbazin committed
793
                                    p_aout->output.p_sys->p_notif->p_events ) )
794
    {
gbazin's avatar
   
gbazin committed
795
        msg_Err( p_aout, "cannot set position notification" );
gbazin's avatar
   
gbazin committed
796
        goto error;
797
    }
gbazin's avatar
   
gbazin committed
798

gbazin's avatar
   
gbazin committed
799
800
    p_aout->output.p_sys->i_channel_mask = waveformat.dwChannelMask;
    CheckReordering( p_aout, i_nb_channels );
gbazin's avatar
   
gbazin committed
801

gbazin's avatar
   
gbazin committed
802
    return VLC_SUCCESS;
gbazin's avatar
   
gbazin committed
803
804

 error:
gbazin's avatar
   
gbazin committed
805
    DestroyDSBuffer( p_aout );
806
    return VLC_EGENERIC;
807
808
809
}

/*****************************************************************************
gbazin's avatar
   
gbazin committed
810
811
812
813
814
815
816
817
818
 * CreateDSBufferPCM: creates a PCM direct sound buffer.
 *****************************************************************************
 * We first try to create a WAVE_FORMAT_IEEE_FLOAT buffer if supported by
 * the hardware, otherwise we create a WAVE_FORMAT_PCM buffer.
 ****************************************************************************/
static int CreateDSBufferPCM( aout_instance_t *p_aout, int *i_format,
                              int i_channels, int i_nb_channels, int i_rate,
                              vlc_bool_t b_probe )
{
gbazin's avatar
   
gbazin committed
819
820
821
822
    /* Float32 audio samples are not supported for 5.1 output on the emu101k */

    if( i_nb_channels > 2 ||
        CreateDSBuffer( p_aout, VLC_FOURCC('f','l','3','2'),
gbazin's avatar
   
gbazin committed
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
                        i_channels, i_nb_channels, i_rate,
                        FRAME_SIZE * 4 * i_nb_channels, b_probe )
        != VLC_SUCCESS )
    {
        if ( CreateDSBuffer( p_aout, VLC_FOURCC('s','1','6','l'),
                             i_channels, i_nb_channels, i_rate,
                             FRAME_SIZE * 2 * i_nb_channels, b_probe )
             != VLC_SUCCESS )
        {
            return VLC_EGENERIC;
        }
        else
        {
            *i_format = VLC_FOURCC('s','1','6','l');
            return VLC_SUCCESS;
        }
    }
    else
    {
        *i_format = VLC_FOURCC('f','l','3','2');
        return VLC_SUCCESS;
    }
}

/*****************************************************************************
 * DestroyDSBuffer
849
 *****************************************************************************
gbazin's avatar
   
gbazin committed
850
 * This function destroys the secondary buffer.
851
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
852
static void DestroyDSBuffer( aout_instance_t *p_aout )
853
{
gbazin's avatar
   
gbazin committed
854
    if( p_aout->output.p_sys->p_dsnotify )
855
    {
gbazin's avatar
   
gbazin committed
856
857
        IDirectSoundNotify_Release( p_aout->output.p_sys->p_dsnotify );
        p_aout->output.p_sys->p_dsnotify = NULL;
858
859
    }

gbazin's avatar
   
gbazin committed
860
    if( p_aout->output.p_sys->p_dsbuffer )
861
    {
gbazin's avatar
   
gbazin committed
862
863
        IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
        p_aout->output.p_sys->p_dsbuffer = NULL;
864
865
866
    }
}

gbazin's avatar
   
gbazin committed
867
/*****************************************************************************
gbazin's avatar
   
gbazin committed
868
 * FillBuffer: Fill in one of the direct sound frame buffers.
gbazin's avatar
   
gbazin committed
869
870
871
 *****************************************************************************
 * Returns VLC_SUCCESS on success.
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
872
873
static int FillBuffer( aout_instance_t *p_aout, int i_frame,
                       aout_buffer_t *p_buffer )
gbazin's avatar
   
gbazin committed
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
{
    notification_thread_t *p_notif = p_aout->output.p_sys->p_notif;
    void *p_write_position, *p_wrap_around;
    long l_bytes1, l_bytes2;
    HRESULT dsresult;

    /* Before copying anything, we have to lock the buffer */
    dsresult = IDirectSoundBuffer_Lock(
                p_aout->output.p_sys->p_dsbuffer,               /* DS buffer */
                i_frame * p_notif->i_frame_size,             /* Start offset */
                p_notif->i_frame_size,                    /* Number of bytes */
                &p_write_position,                  /* Address of lock start */
                &l_bytes1,       /* Count of bytes locked before wrap around */
                &p_wrap_around,            /* Buffer adress (if wrap around) */
                &l_bytes2,               /* Count of bytes after wrap around */
                0 );                                                /* Flags */
    if( dsresult == DSERR_BUFFERLOST )
    {
        IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
        dsresult = IDirectSoundBuffer_Lock(
                               p_aout->output.p_sys->p_dsbuffer,
                               i_frame * p_notif->i_frame_size,
                               p_notif->i_frame_size,
                               &p_write_position,
                               &l_bytes1,
                               &p_wrap_around,
                               &l_bytes2,
                               0 );
    }
    if( dsresult != DS_OK )
    {
        msg_Warn( p_notif, "cannot lock buffer" );
gbazin's avatar
   
gbazin committed
906
        if( p_buffer ) aout_BufferFree( p_buffer );
gbazin's avatar
   
gbazin committed
907
908
909
        return VLC_EGENERIC;
    }

gbazin's avatar
   
gbazin committed
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
    if( p_buffer == NULL )
    {
        memset( p_write_position, 0, l_bytes1 );
    }
    else if( p_aout->output.p_sys->b_chan_reorder )
    {
        /* Do the channel reordering here */

        if( p_aout->output.output.i_format ==  VLC_FOURCC('s','1','6','l') )
          InterleaveS16( (int16_t *)p_buffer->p_buffer,
                         (int16_t *)p_write_position,
                         p_aout->output.p_sys->pi_chan_table,
                         aout_FormatNbChannels( &p_aout->output.output ) );
        else
          InterleaveFloat32( (float *)p_buffer->p_buffer,
                             (float *)p_write_position,
                             p_aout->output.p_sys->pi_chan_table,
                             aout_FormatNbChannels( &p_aout->output.output ) );
gbazin's avatar
   
gbazin committed
928
929

        aout_BufferFree( p_buffer );
gbazin's avatar
   
gbazin committed
930
931
    }
    else
gbazin's avatar
   
gbazin committed
932
    {
gbazin's avatar
   
gbazin committed
933
934
        p_aout->p_vlc->pf_memcpy( p_write_position, p_buffer->p_buffer,
                                  l_bytes1 );
gbazin's avatar
   
gbazin committed
935
936
        aout_BufferFree( p_buffer );
    }
gbazin's avatar
   
gbazin committed
937
938
939
940
941
942
943
944
945

    /* Now the data has been copied, unlock the buffer */
    IDirectSoundBuffer_Unlock( p_aout->output.p_sys->p_dsbuffer,
                               p_write_position, l_bytes1,
                               p_wrap_around, l_bytes2 );

    return VLC_SUCCESS;
}

946
947
948
/*****************************************************************************
 * DirectSoundThread: this thread will capture play notification events. 
 *****************************************************************************
gbazin's avatar
   
gbazin committed
949
950
 * We use this thread to emulate a callback mechanism. The thread probes for
 * event notification and fills up the DS secondary buffer when needed.
951
952
953
 *****************************************************************************/
static void DirectSoundThread( notification_thread_t *p_notif )
{
gbazin's avatar
   
gbazin committed
954
    HANDLE  notification_events[FRAMES_NUM];
955
    HRESULT dsresult;
gbazin's avatar
   
gbazin committed
956
    aout_instance_t *p_aout = p_notif->p_aout;
gbazin's avatar
   
gbazin committed
957
958
    int i, i_which_frame, i_last_frame, i_next_frame;
    mtime_t mtime;
gbazin's avatar
   
gbazin committed
959
    vlc_bool_t b_sleek;
960

gbazin's avatar
   
gbazin committed
961
962
    for( i = 0; i < FRAMES_NUM; i++ )
        notification_events[i] = p_notif->p_events[i].hEventNotify;
963

gbazin's avatar
   
gbazin committed
964
965
966
    /* We don't want any resampling when using S/PDIF output */
    b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i');

967
968
969
970
971
    /* Tell the main thread that we are ready */
    vlc_thread_ready( p_notif );

    msg_Dbg( p_notif, "DirectSoundThread ready" );

gbazin's avatar
   
gbazin committed
972
973
    /* Wait here until Play() is called */
    WaitForSingleObject( notification_events[0], INFINITE );
gbazin's avatar
   
gbazin committed
974

gbazin's avatar
   
gbazin committed
975
976
977
    if( !p_notif->b_die )
    {
        mwait( p_notif->start_date - AOUT_PTS_TOLERANCE / 2 );
978

gbazin's avatar
   
gbazin committed
979
980
981
982
983
        /* start playing the buffer */
        dsresult = IDirectSoundBuffer_Play( p_aout->output.p_sys->p_dsbuffer,
                                        0,                         /* Unused */
                                        0,                         /* Unused */
                                        DSBPLAY_LOOPING );          /* Flags */
gbazin's avatar
   
gbazin committed
984
        if( dsresult == DSERR_BUFFERLOST )
985
        {
gbazin's avatar
   
gbazin committed
986
            IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
gbazin's avatar
   
gbazin committed
987
988
989
990
991
            dsresult = IDirectSoundBuffer_Play(
                                            p_aout->output.p_sys->p_dsbuffer,
                                            0,                     /* Unused */
                                            0,                     /* Unused */
                                            DSBPLAY_LOOPING );      /* Flags */
992
        }
gbazin's avatar
   
gbazin committed
993
        if( dsresult != DS_OK )
994
        {
gbazin's avatar
   
gbazin committed
995
            msg_Err( p_aout, "cannot start playing buffer" );
996
        }
gbazin's avatar
   
gbazin committed
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
    }

    while( !p_notif->b_die )
    {
        aout_buffer_t *p_buffer;
        long l_latency;

        /* wait for the position notification */
        i_which_frame = WaitForMultipleObjects( FRAMES_NUM,
                                                notification_events, 0,
                                                INFINITE ) - WAIT_OBJECT_0;

        if( p_notif->b_die )
            break;

        mtime = mdate();
1013

gbazin's avatar
   
gbazin committed
1014
        /* We take into account the current latency */
gbazin's avatar
   
gbazin committed
1015
1016
1017
        if SUCCEEDED( IDirectSoundBuffer_GetCurrentPosition(
                        p_aout->output.p_sys->p_dsbuffer,
                        &l_latency, NULL ) )
gbazin's avatar
   
gbazin committed
1018
        {
gbazin's avatar
   
gbazin committed
1019
1020
            if( l_latency > (i_which_frame * FRAME_SIZE)
                  && l_latency < ((i_which_frame+1) * FRAME_SIZE) )
gbazin's avatar
   
gbazin committed
1021
            {
gbazin's avatar
   
gbazin committed
1022
1023
1024
                l_latency = - ( l_latency /
                                p_aout->output.output.i_bytes_per_frame %
                                FRAME_SIZE );
gbazin's avatar
   
gbazin committed
1025
1026
1027
            }
            else
            {
gbazin's avatar
   
gbazin committed
1028
                l_latency = FRAME_SIZE - ( l_latency /
gbazin's avatar
   
gbazin committed
1029
1030
1031
1032
1033
1034
                                      p_aout->output.output.i_bytes_per_frame %
                                      FRAME_SIZE );
            }
        }
        else
        {
gbazin's avatar
   
gbazin committed
1035
            l_latency = 0;
gbazin's avatar
   
gbazin committed
1036
1037
        }

gbazin's avatar
   
gbazin committed
1038
1039
1040
1041
        /* Mark last frame as empty */
        i_last_frame = (i_which_frame + FRAMES_NUM -1) % FRAMES_NUM;
        i_next_frame = (i_which_frame + 1) % FRAMES_NUM;
        p_notif->i_frame_status[i_last_frame] = FRAME_EMPTY;
1042

gbazin's avatar
   
gbazin committed
1043
1044
        /* Try to fill in as many frame buffers as possible */
        for( i = i_next_frame; (i % FRAMES_NUM) != i_which_frame; i++ )
1045
1046
        {

gbazin's avatar
   
gbazin committed
1047
1048
1049
1050
1051
1052
            /* Check if frame buf is already filled */
            if( p_notif->i_frame_status[i % FRAMES_NUM] == FRAME_QUEUED )
                continue;

            p_buffer = aout_OutputNextBuffer( p_aout,
                mtime + 1000000 / p_aout->output.output.i_rate *
gbazin's avatar
   
gbazin committed
1053
                ((i - i_next_frame + 1) * FRAME_SIZE + l_latency), b_sleek );
gbazin's avatar
   
gbazin committed
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063

            /* If there is no audio data available and we have some buffered
             * already, then just wait for the next time */
            if( !p_buffer && (i != i_next_frame) )
            {
                //msg_Err( p_aout, "only %i frame buffers filled!",
                //         i - i_next_frame );
                break;
            }

gbazin's avatar
   
gbazin committed
1064
            if( FillBuffer( p_aout, (i%FRAMES_NUM), p_buffer )
gbazin's avatar
   
gbazin committed
1065
1066
1067
1068
1069
1070
                != VLC_SUCCESS )
                break;

            /* Mark the frame buffer as QUEUED */
            p_notif->i_frame_status[i%FRAMES_NUM] = FRAME_QUEUED;
        }
1071
1072
1073

    }

gbazin's avatar
   
gbazin committed
1074
1075
1076
    /* make sure the buffer isn't playing */
    IDirectSoundBuffer_Stop( p_aout->output.p_sys->p_dsbuffer );

1077
    /* free the events */
gbazin's avatar
   
gbazin committed
1078
1079
    for( i = 0; i < FRAMES_NUM; i++ )
        CloseHandle( notification_events[i] );
1080
1081
1082

    msg_Dbg( p_notif, "DirectSoundThread exiting" );
}
gbazin's avatar
   
gbazin committed
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143

/*****************************************************************************
 * CheckReordering: Check if we need to do some channel re-ordering (the ac3
 *                  channel order is different from the one chosen by
 *                  Microsoft).
 *****************************************************************************/
static void CheckReordering( aout_instance_t *p_aout, int i_nb_channels )
{
    int i, j, k, l;

#define i_channel_mask p_aout->output.p_sys->i_channel_mask
#define pi_chan_table p_aout->output.p_sys->pi_chan_table

    p_aout->output.p_sys->b_chan_reorder = VLC_FALSE;

    pi_chan_table = malloc( i_nb_channels * sizeof(int) );
    if( !pi_chan_table )
    {
        return;
    }

    for( i = 0, j = 0;
         i < (int)(sizeof(pi_channels_out)/sizeof(uint32_t)); i++ )
    {
        if( i_channel_mask & pi_channels_out[i] )
        {
            for( k = 0, l = 0;
                 pi_channels_out[i] != pi_channels_ordered[k]; k++ )
            {
                if( i_channel_mask & pi_channels_ordered[k] )
                {
                    l++;
                }
            }

            pi_chan_table[j] = l;

            j++;
        }
    }

    for( i = 0; i < i_nb_channels; i++ )
    {
        if( pi_chan_table[i] != i )
        {
            p_aout->output.p_sys->b_chan_reorder = VLC_TRUE;
        }
    }

    if( p_aout->output.p_sys->b_chan_reorder )
    {
        msg_Dbg( p_aout, "channel reordering needed" );
    }

#undef pi_chan_table
#undef waveformat
}

/*****************************************************************************
 * InterleaveFloat32/S16: change the channel order to the Microsoft one.
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
1144
1145
static void InterleaveFloat32( float *p_buf, float *p_buf_out,
                               int *pi_chan_table, int i_nb_channels )
gbazin's avatar
   
gbazin committed
1146
1147
1148
1149
1150
1151
1152
{
    int i, j;

    for( i = 0; i < FRAME_SIZE; i++ )
    {
        for( j = 0; j < i_nb_channels; j++ )
        {
gbazin's avatar
   
gbazin committed
1153
1154
            p_buf_out[i*i_nb_channels + pi_chan_table[j]] =
                p_buf[i*i_nb_channels + j];
gbazin's avatar
   
gbazin committed
1155
1156
1157
1158
        }
    }
}

gbazin's avatar
   
gbazin committed
1159
1160
static void InterleaveS16( int16_t *p_buf, int16_t *p_buf_out,
                           int *pi_chan_table, int i_nb_channels )
gbazin's avatar
   
gbazin committed
1161
1162
1163
1164
1165
1166
1167
{
    int i, j;

    for( i = 0; i < FRAME_SIZE; i++ )
    {
        for( j = 0; j < i_nb_channels; j++ )
        {
gbazin's avatar
   
gbazin committed
1168
1169
            p_buf_out[ i*i_nb_channels + pi_chan_table[j]] =
                p_buf[i*i_nb_channels + j];
gbazin's avatar
   
gbazin committed
1170
1171
1172
        }
    }
}