directx.c 40.9 KB
Newer Older
1
/*****************************************************************************
2
 * directx.c: Windows DirectX audio output method
3
 *****************************************************************************
4
 * Copyright (C) 2001 the VideoLAN team
5
 * $Id$
6
 *
7
 * Authors: Gildas Bazin <gbazin@videolan.org>
8
9
10
11
12
13
14
15
16
17
18
19
20
 *
 * 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
dionoea's avatar
dionoea committed
21
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22
23
24
25
26
27
28
29
30
31
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <string.h>                                            /* strerror() */

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

#include <vlc/vlc.h>
zorglub's avatar
zorglub committed
32
#include <vlc_aout.h>
33

gbazin's avatar
   
gbazin committed
34
#include <windows.h>
35
36
37
#include <mmsystem.h>
#include <dsound.h>

38
39
#define FRAME_SIZE ((int)p_aout->output.output.i_rate/20) /* Size in samples */
#define FRAMES_NUM 8                                      /* Needs to be > 3 */
gbazin's avatar
   
gbazin committed
40

41
42
43
44
45
46
47
/*****************************************************************************
 * DirectSound GUIDs.
 * Defining them here allows us to get rid of the dxguid library during
 * the linking stage.
 *****************************************************************************/
#include <initguid.h>

gbazin's avatar
   
gbazin committed
48
49
50
51
52
53
54
/*****************************************************************************
 * Useful macros
 *****************************************************************************/
#ifndef WAVE_FORMAT_IEEE_FLOAT
#   define WAVE_FORMAT_IEEE_FLOAT 0x0003
#endif

gbazin's avatar
   
gbazin committed
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
#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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
#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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
#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
118
119
120
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
121

122
123
124
125
126
127
128
/*****************************************************************************
 * notification_thread_t: DirectX event thread
 *****************************************************************************/
typedef struct notification_thread_t
{
    VLC_COMMON_MEMBERS

129
130
131
    aout_instance_t *p_aout;
    int i_frame_size;                          /* size in bytes of one frame */
    int i_write_slot;       /* current write position in our circular buffer */
gbazin's avatar
   
gbazin committed
132
133

    mtime_t start_date;
134
    HANDLE event;
135
136
137
138
139
140
141
142
143
144
145

} 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
146
    HINSTANCE           hdsound_dll;      /* handle of the opened dsound dll */
147
148
149
150

    int                 i_device_id;                 /*  user defined device */
    LPGUID              p_device_guid;

151
152
153
154
155
    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) */

gbazin's avatar
   
gbazin committed
156
    notification_thread_t *p_notif;                  /* DirectSoundThread id */
157

gbazin's avatar
   
gbazin committed
158
    int b_playing;                                         /* playing status */
159

gbazin's avatar
   
gbazin committed
160
    int i_frame_size;                         /* Size in bytes of one frame */
gbazin's avatar
   
gbazin committed
161

gbazin's avatar
   
gbazin committed
162
    vlc_bool_t b_chan_reorder;              /* do we need channel reordering */
163
    int pi_chan_table[AOUT_CHAN_MAX];
gbazin's avatar
   
gbazin committed
164
    uint32_t i_channel_mask;
165
166
    uint32_t i_bits_per_sample;
    uint32_t i_channels;
167
168
};

169
static const uint32_t pi_channels_src[] =
gbazin's avatar
   
gbazin committed
170
    { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
171
      AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT,
gbazin's avatar
   
gbazin committed
172
      AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
173
174
175
176
177
178
      AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
static const uint32_t pi_channels_in[] =
    { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
      SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT,
      SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
      SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY, 0 };
gbazin's avatar
   
gbazin committed
179
180
static const uint32_t pi_channels_out[] =
    { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
181
      SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY,
gbazin's avatar
   
gbazin committed
182
      SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
183
      SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT, 0 };
gbazin's avatar
   
gbazin committed
184

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
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 * );

gbazin's avatar
   
gbazin committed
201
202
203
/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
204
205
206
207
208
209
210
211
212
#define DEVICE_TEXT N_("Output device")
#define DEVICE_LONGTEXT N_( \
    "DirectX device number: 0 default device, 1..N device by number" \
    "(Note that the default device appears as 0 AND another number)." )
#define FLOAT_TEXT N_("Use float32 output")
#define FLOAT_LONGTEXT N_( \
    "The option allows you to enable or disable the high-quality float32 " \
    "audio output mode (which is not well supported by some soundcards)." )

gbazin's avatar
   
gbazin committed
213
vlc_module_begin();
214
    set_description( _("DirectX audio output") );
215
    set_shortname( "DirectX" );
gbazin's avatar
   
gbazin committed
216
    set_capability( "audio output", 100 );
zorglub's avatar
zorglub committed
217
218
    set_category( CAT_AUDIO );
    set_subcategory( SUBCAT_AUDIO_AOUT );
gbazin's avatar
   
gbazin committed
219
    add_shortcut( "directx" );
220
221
    add_integer( "directx-audio-device", 0, NULL, DEVICE_TEXT,
                 DEVICE_LONGTEXT, VLC_TRUE );
dionoea's avatar
dionoea committed
222
    add_bool( "directx-audio-float32", 0, 0, FLOAT_TEXT,
223
              FLOAT_LONGTEXT, VLC_TRUE );
gbazin's avatar
   
gbazin committed
224
225
226
    set_callbacks( OpenAudio, CloseAudio );
vlc_module_end();

227
228
229
230
231
/*****************************************************************************
 * OpenAudio: open the audio device
 *****************************************************************************
 * This function opens and setups Direct Sound.
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
232
static int OpenAudio( vlc_object_t *p_this )
233
{
gbazin's avatar
   
gbazin committed
234
    aout_instance_t * p_aout = (aout_instance_t *)p_this;
gbazin's avatar
   
gbazin committed
235
    vlc_value_t val;
236

gbazin's avatar
   
gbazin committed
237
    msg_Dbg( p_aout, "OpenAudio" );
238
239

   /* Allocate structure */
gbazin's avatar
   
gbazin committed
240
241
    p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
    if( p_aout->output.p_sys == NULL )
242
243
    {
        msg_Err( p_aout, "out of memory" );
244
        return VLC_EGENERIC;
245
246
247
    }

    /* Initialize some variables */
gbazin's avatar
   
gbazin committed
248
249
250
    p_aout->output.p_sys->p_dsobject = NULL;
    p_aout->output.p_sys->p_dsbuffer = NULL;
    p_aout->output.p_sys->p_notif = NULL;
gbazin's avatar
   
gbazin committed
251
    p_aout->output.p_sys->b_playing = 0;
gbazin's avatar
   
gbazin committed
252
253

    p_aout->output.pf_play = Play;
254
    aout_VolumeSoftInit( p_aout );
255

256
257
258
259
260
261
262
263
264
    /* Retrieve config values */
    var_Create( p_aout, "directx-audio-float32",
                VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
    var_Create( p_aout, "directx-audio-device",
                VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
    var_Get( p_aout, "directx-audio-device", &val );
    p_aout->output.p_sys->i_device_id = val.i_int;
    p_aout->output.p_sys->p_device_guid = 0;

265
    /* Initialise DirectSound */
gbazin's avatar
   
gbazin committed
266
    if( InitDirectSound( p_aout ) )
267
    {
gbazin's avatar
   
gbazin committed
268
269
        msg_Err( p_aout, "cannot initialize DirectSound" );
        goto error;
270
271
    }

gbazin's avatar
   
gbazin committed
272
273
274
275
276
277
278
279
    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
280
        goto error;
gbazin's avatar
   
gbazin committed
281
282
283
    }

    /* Open the device */
gbazin's avatar
   
gbazin committed
284
    if( val.i_int == AOUT_VAR_SPDIF )
285
    {
gbazin's avatar
   
gbazin committed
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
        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
302
            msg_Err( p_aout, "cannot open directx audio device" );
gbazin's avatar
   
gbazin committed
303
304
305
306
307
308
309
310
            free( p_aout->output.p_sys );
            return VLC_EGENERIC;
        }

        aout_VolumeNoneInit( p_aout );
    }
    else
    {
gbazin's avatar
   
gbazin committed
311
        if( val.i_int == AOUT_VAR_5_1 )
gbazin's avatar
   
gbazin committed
312
313
314
315
316
317
        {
            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;
        }
318
319
320
321
322
323
        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
324
        else if( val.i_int == AOUT_VAR_2F2R )
gbazin's avatar
   
gbazin committed
325
326
327
328
329
        {
            p_aout->output.output.i_physical_channels
                = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
                   | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
        }
gbazin's avatar
   
gbazin committed
330
        else if( val.i_int == AOUT_VAR_MONO )
gbazin's avatar
   
gbazin committed
331
332
333
334
335
336
337
338
        {
            p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
        }
        else
        {
            p_aout->output.output.i_physical_channels
                = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
        }
339

gbazin's avatar
   
gbazin committed
340
341
342
343
344
        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
345
        {
gbazin's avatar
   
gbazin committed
346
            msg_Err( p_aout, "cannot open directx audio device" );
gbazin's avatar
   
gbazin committed
347
348
            free( p_aout->output.p_sys );
            return VLC_EGENERIC;
gbazin's avatar
   
gbazin committed
349
        }
gbazin's avatar
   
gbazin committed
350
351
352
353
354

        /* Calculate the frame size in bytes */
        p_aout->output.i_nb_samples = FRAME_SIZE;
        aout_FormatPrepare( &p_aout->output.output );
        aout_VolumeSoftInit( p_aout );
gbazin's avatar
   
gbazin committed
355
    }
356

357
358
359
360
361
362
363
364
365
    /* 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;

    p_aout->output.p_sys->p_notif->event = CreateEvent( 0, FALSE, FALSE, 0 );
    p_aout->output.p_sys->p_notif->i_frame_size =
        p_aout->output.p_sys->i_frame_size;

Christophe Massiot's avatar
Christophe Massiot committed
366
367
368
369
    /* 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
370
                           DirectSoundThread,
gbazin's avatar
   
gbazin committed
371
                           VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
Christophe Massiot's avatar
Christophe Massiot committed
372
373
    {
        msg_Err( p_aout, "cannot create DirectSoundThread" );
374
375
376
        CloseHandle( p_aout->output.p_sys->p_notif->event );
        vlc_object_destroy( p_aout->output.p_sys->p_notif );
        p_aout->output.p_sys->p_notif = 0;
Christophe Massiot's avatar
Christophe Massiot committed
377
378
379
380
381
        goto error;
    }

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

gbazin's avatar
   
gbazin committed
382
    return VLC_SUCCESS;
Christophe Massiot's avatar
Christophe Massiot committed
383
384

 error:
gbazin's avatar
   
gbazin committed
385
    CloseAudio( VLC_OBJECT(p_aout) );
386
    return VLC_EGENERIC;
gbazin's avatar
   
gbazin committed
387
388
}

gbazin's avatar
   
gbazin committed
389
390
391
392
393
/*****************************************************************************
 * Probe: probe the audio device for available formats and channels
 *****************************************************************************/
static void Probe( aout_instance_t * p_aout )
{
gbazin's avatar
   
gbazin committed
394
    vlc_value_t val, text;
gbazin's avatar
   
gbazin committed
395
396
397
398
    int i_format;
    unsigned int i_physical_channels;
    DWORD ui_speaker_config;

gbazin's avatar
   
gbazin committed
399
    var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
400
    text.psz_string = _("Audio Device");
gbazin's avatar
   
gbazin committed
401
    var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
gbazin's avatar
   
gbazin committed
402
403
404
405
406
407
408
409
410
411
412

    /* 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
413
            val.i_int = AOUT_VAR_5_1;
414
            text.psz_string = "5.1";
gbazin's avatar
   
gbazin committed
415
416
            var_Change( p_aout, "audio-device",
                        VLC_VAR_ADDCHOICE, &val, &text );
gbazin's avatar
   
gbazin committed
417
418
419
420
            msg_Dbg( p_aout, "device supports 5.1 channels" );
        }
    }

421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
    /* 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
439
440
441
442
443
444
445
446
447
448
    /* 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
449
450
451
452
            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
453
454
455
456
457
458
459
460
461
462
            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
463
464
465
        val.i_int = AOUT_VAR_STEREO;
        text.psz_string = N_("Stereo");
        var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
466
        var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
gbazin's avatar
   
gbazin committed
467
468
469
470
471
472
473
474
475
        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
476
477
478
        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
479
480
481
482
483
484
485
486
487
488
489
490
491
        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
492
        val.i_int = AOUT_VAR_5_1;
gbazin's avatar
   
gbazin committed
493
494
        break;
    case DSSPEAKER_QUAD:
gbazin's avatar
   
gbazin committed
495
        val.i_int = AOUT_VAR_2F2R;
gbazin's avatar
   
gbazin committed
496
        break;
gbazin's avatar
   
gbazin committed
497
498
#if 0 /* Lots of people just get their settings wrong and complain that
       * this is a problem with VLC so just don't ever set mono by default. */
gbazin's avatar
   
gbazin committed
499
    case DSSPEAKER_MONO:
gbazin's avatar
   
gbazin committed
500
        val.i_int = AOUT_VAR_MONO;
gbazin's avatar
   
gbazin committed
501
        break;
gbazin's avatar
   
gbazin committed
502
#endif
gbazin's avatar
   
gbazin committed
503
504
505
    case DSSPEAKER_SURROUND:
    case DSSPEAKER_STEREO:
    default:
gbazin's avatar
   
gbazin committed
506
        val.i_int = AOUT_VAR_STEREO;
gbazin's avatar
   
gbazin committed
507
508
509
510
        break;
    }
    var_Set( p_aout, "audio-device", val );

gbazin's avatar
   
gbazin committed
511
512
513
514
515
516
517
518
519
520
521
    /* 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
522
523
524
525
            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
526
527
528
529
530
            if( config_GetInt( p_aout, "spdif" ) )
                var_Set( p_aout, "audio-device", val );
        }
    }

gbazin's avatar
   
gbazin committed
531
532
533
534
535
536
537
538
    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
539
540
541
542
543
544
    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
545
/*****************************************************************************
gbazin's avatar
   
gbazin committed
546
547
548
 * 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
549
 *****************************************************************************/
550
static void Play( aout_instance_t *p_aout )
gbazin's avatar
   
gbazin committed
551
{
gbazin's avatar
   
gbazin committed
552
553
554
    if( !p_aout->output.p_sys->b_playing )
    {
        aout_buffer_t *p_buffer;
555
        int i;
gbazin's avatar
   
gbazin committed
556
557
558
559
560
561
562
563

        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 */
564
565
566
567
568
569
        for( i = 0; i < FRAMES_NUM; i++ )
        {
            p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
            if( !p_buffer ) break;
            FillBuffer( p_aout, i, p_buffer );
        }
gbazin's avatar
   
gbazin committed
570
571

        /* wake up the audio output thread */
572
        SetEvent( p_aout->output.p_sys->p_notif->event );
gbazin's avatar
   
gbazin committed
573
    }
574
575
576
577
578
}

/*****************************************************************************
 * CloseAudio: close the audio device
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
579
static void CloseAudio( vlc_object_t *p_this )
580
{
gbazin's avatar
   
gbazin committed
581
    aout_instance_t * p_aout = (aout_instance_t *)p_this;
582
    aout_sys_t *p_sys = p_aout->output.p_sys;
583

584
    msg_Dbg( p_aout, "closing audio device" );
585
586

    /* kill the position notification thread, if any */
587
    if( p_sys->p_notif )
588
    {
589
590
        vlc_object_detach( p_sys->p_notif );
        if( p_sys->p_notif->b_thread )
gbazin's avatar
   
gbazin committed
591
        {
592
            p_sys->p_notif->b_die = 1;
gbazin's avatar
   
gbazin committed
593

594
595
            /* wake up the audio thread if needed */
            if( !p_sys->b_playing ) SetEvent( p_sys->p_notif->event );
gbazin's avatar
   
gbazin committed
596

597
            vlc_thread_join( p_sys->p_notif );
gbazin's avatar
   
gbazin committed
598
        }
599
        vlc_object_destroy( p_sys->p_notif );
600
601
602
    }

    /* release the secondary buffer */
gbazin's avatar
   
gbazin committed
603
    DestroyDSBuffer( p_aout );
604
605

    /* finally release the DirectSound object */
606
    if( p_sys->p_dsobject ) IDirectSound_Release( p_sys->p_dsobject );
607
608
    
    /* free DSOUND.DLL */
609
    if( p_sys->hdsound_dll ) FreeLibrary( p_sys->hdsound_dll );
gbazin's avatar
   
gbazin committed
610

611
612
613
    if( p_aout->output.p_sys->p_device_guid )
        free( p_aout->output.p_sys->p_device_guid );

614
    free( p_sys );
615
616
}

617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
/*****************************************************************************
 * CallBackDirectSoundEnum: callback to enumerate available devices
 *****************************************************************************/
static int CALLBACK CallBackDirectSoundEnum( LPGUID p_guid, LPCSTR psz_desc,
                                             LPCSTR psz_mod, LPVOID _p_aout )
{
    aout_instance_t *p_aout = (aout_instance_t *)_p_aout;

    msg_Dbg( p_aout, "found device: %s", psz_desc );

    if( p_aout->output.p_sys->i_device_id == 0 && p_guid )
    {
        p_aout->output.p_sys->p_device_guid = malloc( sizeof( GUID ) );
        *p_aout->output.p_sys->p_device_guid = *p_guid;
        msg_Dbg( p_aout, "using device: %s", psz_desc );
    }

    p_aout->output.p_sys->i_device_id--;
    return 1;
}

638
/*****************************************************************************
gbazin's avatar
   
gbazin committed
639
 * InitDirectSound: handle all the gory details of DirectSound initialisation
640
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
641
static int InitDirectSound( aout_instance_t *p_aout )
642
643
{
    HRESULT (WINAPI *OurDirectSoundCreate)(LPGUID, LPDIRECTSOUND *, LPUNKNOWN);
644
    HRESULT (WINAPI *OurDirectSoundEnumerate)(LPDSENUMCALLBACK, LPVOID);
645

gbazin's avatar
   
gbazin committed
646
647
    p_aout->output.p_sys->hdsound_dll = LoadLibrary("DSOUND.DLL");
    if( p_aout->output.p_sys->hdsound_dll == NULL )
648
    {
gbazin's avatar
   
gbazin committed
649
650
        msg_Warn( p_aout, "cannot open DSOUND.DLL" );
        goto error;
651
652
    }

653
654
655
    OurDirectSoundCreate = (void *)
        GetProcAddress( p_aout->output.p_sys->hdsound_dll,
                        "DirectSoundCreate" );
656
657
    if( OurDirectSoundCreate == NULL )
    {
gbazin's avatar
   
gbazin committed
658
659
        msg_Warn( p_aout, "GetProcAddress FAILED" );
        goto error;
660
661
    }

662
663
664
665
666
667
668
669
670
671
672
673
674
675
    /* Get DirectSoundEnumerate */
    OurDirectSoundEnumerate = (void *)
       GetProcAddress( p_aout->output.p_sys->hdsound_dll,
                       "DirectSoundEnumerateA" );
    if( OurDirectSoundEnumerate )
    {
        /* Attempt enumeration */
        if( FAILED( OurDirectSoundEnumerate( CallBackDirectSoundEnum, 
                                             p_aout ) ) )
        {
            msg_Dbg( p_aout, "enumeration of DirectSound devices failed" );
        }
    }

676
    /* Create the direct sound object */
677
678
    if FAILED( OurDirectSoundCreate( p_aout->output.p_sys->p_device_guid, 
                                     &p_aout->output.p_sys->p_dsobject,
gbazin's avatar
   
gbazin committed
679
                                     NULL ) )
680
681
    {
        msg_Warn( p_aout, "cannot create a direct sound device" );
gbazin's avatar
   
gbazin committed
682
        goto error;
683
684
685
686
687
688
689
690
691
692
693
694
    }

    /* 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
695
696
697
    if( IDirectSound_SetCooperativeLevel( p_aout->output.p_sys->p_dsobject,
                                          GetDesktopWindow(),
                                          DSSCL_EXCLUSIVE) )
698
699
700
701
    {
        msg_Warn( p_aout, "cannot set direct sound cooperative level" );
    }

gbazin's avatar
   
gbazin committed
702
    return VLC_SUCCESS;
gbazin's avatar
   
gbazin committed
703
704
705
706
707
708
709
710

 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
711
    return VLC_EGENERIC;
gbazin's avatar
   
gbazin committed
712

713
714
715
}

/*****************************************************************************
gbazin's avatar
   
gbazin committed
716
 * CreateDSBuffer: Creates a direct sound buffer of the required format.
717
718
719
720
721
722
723
724
 *****************************************************************************
 * 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
725
 * you have to release the current one and create another.
726
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
727
728
729
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 )
730
{
gbazin's avatar
   
gbazin committed
731
    WAVEFORMATEXTENSIBLE waveformat;
732
    DSBUFFERDESC         dsbdesc;
gbazin's avatar
   
gbazin committed
733
    unsigned int         i;
734

gbazin's avatar
   
gbazin committed
735
736
    /* First set the sound buffer format */
    waveformat.dwChannelMask = 0;
737
    for( i = 0; i < sizeof(pi_channels_src)/sizeof(uint32_t); i++ )
gbazin's avatar
   
gbazin committed
738
    {
739
740
        if( i_channels & pi_channels_src[i] )
            waveformat.dwChannelMask |= pi_channels_in[i];
741
    }
gbazin's avatar
   
gbazin committed
742

gbazin's avatar
   
gbazin committed
743
    switch( i_format )
gbazin's avatar
   
gbazin committed
744
    {
gbazin's avatar
   
gbazin committed
745
746
    case VLC_FOURCC('s','p','d','i'):
        i_nb_channels = 2;
gbazin's avatar
   
gbazin committed
747
748
        /* To prevent channel re-ordering */
        waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
gbazin's avatar
   
gbazin committed
749
750
751
752
        waveformat.Format.wBitsPerSample = 16;
        waveformat.Samples.wValidBitsPerSample =
            waveformat.Format.wBitsPerSample;
        waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
gbazin's avatar
   
gbazin committed
753
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
gbazin's avatar
   
gbazin committed
754
        break;
gbazin's avatar
   
gbazin committed
755

gbazin's avatar
   
gbazin committed
756
    case VLC_FOURCC('f','l','3','2'):
gbazin's avatar
   
gbazin committed
757
758
759
760
        waveformat.Format.wBitsPerSample = sizeof(float) * 8;
        waveformat.Samples.wValidBitsPerSample =
            waveformat.Format.wBitsPerSample;
        waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
gbazin's avatar
   
gbazin committed
761
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
gbazin's avatar
   
gbazin committed
762
763
764
765
766
767
768
        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
769
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_PCM;
gbazin's avatar
   
gbazin committed
770
771
        break;
    }
772

gbazin's avatar
   
gbazin committed
773
774
775
776
777
778
779
    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;

780
781
782
    p_aout->output.p_sys->i_bits_per_sample = waveformat.Format.wBitsPerSample;
    p_aout->output.p_sys->i_channels = i_nb_channels;

783
784
785
786
787
788
    /* Then fill in the direct sound descriptor */
    memset(&dsbdesc, 0, sizeof(DSBUFFERDESC));
    dsbdesc.dwSize = sizeof(DSBUFFERDESC);
    dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2/* Better position accuracy */
                    | DSBCAPS_GLOBALFOCUS;      /* Allows background playing */

gbazin's avatar
   
gbazin committed
789
790
791
792
793
794
795
796
797
798
    /* 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
799

800
801
802
        /* Needed for 5.1 on emu101k */
        dsbdesc.dwFlags |= DSBCAPS_LOCHARDWARE;
    }
gbazin's avatar
   
gbazin committed
803
804
805
806
807
808
809
810

    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) )
    {
811
812
813
814
815
        if( dsbdesc.dwFlags & DSBCAPS_LOCHARDWARE )
        {
            /* Try without DSBCAPS_LOCHARDWARE */
            dsbdesc.dwFlags &= ~DSBCAPS_LOCHARDWARE;
            if FAILED( IDirectSound_CreateSoundBuffer(
gbazin's avatar
   
gbazin committed
816
817
                   p_aout->output.p_sys->p_dsobject, &dsbdesc,
                   &p_aout->output.p_sys->p_dsbuffer, NULL) )
818
819
820
821
822
823
824
            {
                return VLC_EGENERIC;
            }
            if( !b_probe )
                msg_Dbg( p_aout, "couldn't use hardware sound buffer" );
        }
        else
gbazin's avatar
   
gbazin committed
825
826
827
        {
            return VLC_EGENERIC;
        }
828
829
    }

gbazin's avatar
   
gbazin committed
830
831
832
833
834
835
836
    /* 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
837

838
    p_aout->output.p_sys->i_frame_size = i_bytes_per_frame;
gbazin's avatar
   
gbazin committed
839
    p_aout->output.p_sys->i_channel_mask = waveformat.dwChannelMask;
840
841
842
843
844
845
846
847
848
    p_aout->output.p_sys->b_chan_reorder =
        aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
                                  waveformat.dwChannelMask, i_nb_channels,
                                  p_aout->output.p_sys->pi_chan_table );

    if( p_aout->output.p_sys->b_chan_reorder )
    {
        msg_Dbg( p_aout, "channel reordering needed" );
    }
gbazin's avatar
   
gbazin committed
849

gbazin's avatar
   
gbazin committed
850
    return VLC_SUCCESS;
851
852
853
}

/*****************************************************************************
gbazin's avatar
   
gbazin committed
854
855
856
857
858
859
860
861
862
 * 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 )
{
863
864
865
866
    vlc_value_t val;

    var_Get( p_aout, "directx-audio-float32", &val );

gbazin's avatar
   
gbazin committed
867
868
    /* Float32 audio samples are not supported for 5.1 output on the emu101k */

869
    if( !val.b_bool || i_nb_channels > 2 ||
gbazin's avatar
   
gbazin committed
870
        CreateDSBuffer( p_aout, VLC_FOURCC('f','l','3','2'),
gbazin's avatar
   
gbazin committed
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
                        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
897
 *****************************************************************************
gbazin's avatar
   
gbazin committed
898
 * This function destroys the secondary buffer.
899
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
900
static void DestroyDSBuffer( aout_instance_t *p_aout )
901
{
gbazin's avatar
   
gbazin committed
902
    if( p_aout->output.p_sys->p_dsbuffer )
903
    {
gbazin's avatar
   
gbazin committed
904
905
        IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
        p_aout->output.p_sys->p_dsbuffer = NULL;
906
907
908
    }
}

gbazin's avatar
   
gbazin committed
909
/*****************************************************************************
gbazin's avatar
   
gbazin committed
910
 * FillBuffer: Fill in one of the direct sound frame buffers.
gbazin's avatar
   
gbazin committed
911
912
913
 *****************************************************************************
 * Returns VLC_SUCCESS on success.
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
914
915
static int FillBuffer( aout_instance_t *p_aout, int i_frame,
                       aout_buffer_t *p_buffer )
gbazin's avatar
   
gbazin committed
916
917
{
    notification_thread_t *p_notif = p_aout->output.p_sys->p_notif;
918
    aout_sys_t *p_sys = p_aout->output.p_sys;
gbazin's avatar
   
gbazin committed
919
920
921
922
923
924
    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(
925
                p_sys->p_dsbuffer,                              /* DS buffer */
gbazin's avatar
   
gbazin committed
926
927
928
929
930
931
932
933
934
                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 )
    {
935
        IDirectSoundBuffer_Restore( p_sys->p_dsbuffer );
gbazin's avatar
   
gbazin committed
936
        dsresult = IDirectSoundBuffer_Lock(
937
                               p_sys->p_dsbuffer,
gbazin's avatar
   
gbazin committed
938
939
940
941
942
943
944
945
946
947
948
                               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
949
        if( p_buffer ) aout_BufferFree( p_buffer );
gbazin's avatar
   
gbazin committed
950
951
952
        return VLC_EGENERIC;
    }

gbazin's avatar
   
gbazin committed
953
954
955
956
957
    if( p_buffer == NULL )
    {
        memset( p_write_position, 0, l_bytes1 );
    }
    else
gbazin's avatar
   
gbazin committed
958
    {
959
960
961
962
963
964
965
966
        if( p_sys->b_chan_reorder )
        {
            /* Do the channel reordering here */
            aout_ChannelReorder( p_buffer->p_buffer, p_buffer->i_nb_bytes,
                                 p_sys->i_channels, p_sys->pi_chan_table,
                                 p_sys->i_bits_per_sample );
        }

967
        p_aout->p_libvlc->pf_memcpy( p_write_position, p_buffer->p_buffer,
gbazin's avatar
   
gbazin committed
968
                                  l_bytes1 );
gbazin's avatar
   
gbazin committed
969
970
        aout_BufferFree( p_buffer );
    }
gbazin's avatar
   
gbazin committed
971
972

    /* Now the data has been copied, unlock the buffer */
973
    IDirectSoundBuffer_Unlock( p_sys->p_dsbuffer, p_write_position, l_bytes1,
gbazin's avatar
   
gbazin committed
974
975
                               p_wrap_around, l_bytes2 );

976
    p_notif->i_write_slot = (i_frame + 1) % FRAMES_NUM;
gbazin's avatar
   
gbazin committed
977
978
979
    return VLC_SUCCESS;
}

980
981
982
/*****************************************************************************
 * DirectSoundThread: this thread will capture play notification events. 
 *****************************************************************************
gbazin's avatar
   
gbazin committed
983
984
 * We use this thread to emulate a callback mechanism. The thread probes for
 * event notification and fills up the DS secondary buffer when needed.
985
986
987
 *****************************************************************************/
static void DirectSoundThread( notification_thread_t *p_notif )
{
gbazin's avatar
   
gbazin committed
988
    aout_instance_t *p_aout = p_notif->p_aout;
gbazin's avatar
   
gbazin committed
989
    vlc_bool_t b_sleek;
990
991
992
    mtime_t last_time;
    HRESULT dsresult;
    long l_queued = 0;
993

gbazin's avatar
   
gbazin committed
994
995
996
    /* 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');

997
998
999
1000
1001
    /* Tell the main thread that we are ready */
    vlc_thread_ready( p_notif );

    msg_Dbg( p_notif, "DirectSoundThread ready" );

gbazin's avatar
   
gbazin committed
1002
    /* Wait here until Play() is called */
1003
    WaitForSingleObject( p_notif->event, INFINITE );
gbazin's avatar
   
gbazin committed
1004

gbazin's avatar
   
gbazin committed
1005
1006
1007
    if( !p_notif->b_die )
    {
        mwait( p_notif->start_date - AOUT_PTS_TOLERANCE / 2 );
1008

gbazin's avatar
   
gbazin committed
1009
1010
1011
1012
1013
        /* 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
1014
        if( dsresult == DSERR_BUFFERLOST )
1015
        {
gbazin's avatar
   
gbazin committed
1016
            IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
gbazin's avatar
   
gbazin committed
1017
1018
1019
1020
1021
            dsresult = IDirectSoundBuffer_Play(
                                            p_aout->output.p_sys->p_dsbuffer,
                                            0,                     /* Unused */
                                            0,                     /* Unused */
                                            DSBPLAY_LOOPING );      /* Flags */
1022
        }
gbazin's avatar
   
gbazin committed
1023
        if( dsresult != DS_OK )
1024
        {
gbazin's avatar
   
gbazin committed
1025
            msg_Err( p_aout, "cannot start playing buffer" );
1026
        }
gbazin's avatar
   
gbazin committed
1027
    }
1028
    last_time = mdate();
gbazin's avatar
   
gbazin committed
1029
1030
1031

    while( !p_notif->b_die )
    {
1032
1033
1034
        long l_read, l_free_slots;
        mtime_t mtime = mdate();
        int i;
gbazin's avatar
   
gbazin committed
1035

1036
1037
1038
        /*
         * Fill in as much audio data as we can in our circular buffer
         */
gbazin's avatar
   
gbazin committed
1039

1040
1041
1042
        /* Find out current play position */
        if FAILED( IDirectSoundBuffer_GetCurrentPosition(
                   p_aout->output.p_sys->p_dsbuffer, &l_read, NULL ) )
gbazin's avatar
   
gbazin committed
1043
        {
1044
1045
            msg_Err( p_aout, "GetCurrentPosition() failed!" );
            l_read = 0;
gbazin's avatar
   
gbazin committed
1046
1047
        }

1048
1049
1050
        /* Detect underruns */
        if( l_queued && mtime - last_time >
            I64C(1000000) * l_queued / p_aout->output.output.i_rate )
1051
        {
1052
1053
1054
            msg_Dbg( p_aout, "detected underrun!" );
        }
        last_time = mtime;
gbazin's avatar
   
gbazin committed
1055

1056
1057
1058
1059
1060
        /* Try to fill in as many frame buffers as possible */
        l_read /= p_aout->output.output.i_bytes_per_frame;
        l_queued = p_notif->i_write_slot * FRAME_SIZE - l_read;
        if( l_queued < 0 ) l_queued += (FRAME_SIZE * FRAMES_NUM);
        l_free_slots = (FRAMES_NUM * FRAME_SIZE - l_queued) / FRAME_SIZE;
1061

1062
1063
1064
1065
1066
        for( i = 0; i < l_free_slots; i++ )
        {
            aout_buffer_t *p_buffer = aout_OutputNextBuffer( p_aout,
                mtime + I64C(1000000) * (i * FRAME_SIZE + l_queued) /
                p_aout->output.output.i_rate, b_sleek );
gbazin's avatar
   
gbazin committed
1067
1068
1069

            /* If there is no audio data available and we have some buffered
             * already, then just wait for the next time */
1070
            if( !p_buffer && (i || l_queued / FRAME_SIZE) ) break;
gbazin's avatar
   
gbazin committed
1071

1072
1073
            if( FillBuffer( p_aout, p_notif->i_write_slot % FRAMES_NUM,
                            p_buffer ) != VLC_SUCCESS ) break;
gbazin's avatar
   
gbazin committed
1074
        }
1075

1076
1077
1078
        /* Sleep a reasonable amount of time */
        l_queued += (i * FRAME_SIZE);
        msleep( I64C(1000000) * l_queued / p_aout->output.output.i_rate / 2 );
1079
1080
    }

gbazin's avatar
   
gbazin committed
1081
1082
1083
    /* make sure the buffer isn't playing */
    IDirectSoundBuffer_Stop( p_aout->output.p_sys->p_dsbuffer );

1084
1085
    /* free the event */
    CloseHandle( p_notif->event );
1086
1087
1088

    msg_Dbg( p_notif, "DirectSoundThread exiting" );
}