directx.c 40.6 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
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/


29
30
31
32
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

33
#include <vlc/vlc.h>
zorglub's avatar
zorglub committed
34
#include <vlc_aout.h>
35

gbazin's avatar
   
gbazin committed
36
#include <windows.h>
37
38
39
#include <mmsystem.h>
#include <dsound.h>

40
41
#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
42

43
44
45
46
47
48
49
/*****************************************************************************
 * 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
50
51
52
53
54
55
56
/*****************************************************************************
 * Useful macros
 *****************************************************************************/
#ifndef WAVE_FORMAT_IEEE_FLOAT
#   define WAVE_FORMAT_IEEE_FLOAT 0x0003
#endif

gbazin's avatar
   
gbazin committed
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
85
86
#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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
#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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
#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
120
121
122
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
123

124
125
126
127
128
129
130
/*****************************************************************************
 * notification_thread_t: DirectX event thread
 *****************************************************************************/
typedef struct notification_thread_t
{
    VLC_COMMON_MEMBERS

131
132
133
    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
134
135

    mtime_t start_date;
136
    HANDLE event;
137
138
139
140
141
142
143
144
145
146
147

} 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
148
    HINSTANCE           hdsound_dll;      /* handle of the opened dsound dll */
149
150
151
152

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

153
154
155
156
157
    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
158
    notification_thread_t *p_notif;                  /* DirectSoundThread id */
159

gbazin's avatar
   
gbazin committed
160
    int b_playing;                                         /* playing status */
161

gbazin's avatar
   
gbazin committed
162
    int i_frame_size;                         /* Size in bytes of one frame */
gbazin's avatar
   
gbazin committed
163

164
    bool b_chan_reorder;              /* do we need channel reordering */
165
    int pi_chan_table[AOUT_CHAN_MAX];
gbazin's avatar
   
gbazin committed
166
    uint32_t i_channel_mask;
167
168
    uint32_t i_bits_per_sample;
    uint32_t i_channels;
169
170
};

171
static const uint32_t pi_channels_src[] =
gbazin's avatar
   
gbazin committed
172
    { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
173
      AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT,
gbazin's avatar
   
gbazin committed
174
      AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
175
176
177
178
179
180
      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
181
182
static const uint32_t pi_channels_out[] =
    { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
183
      SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY,
gbazin's avatar
   
gbazin committed
184
      SPEAKER_BACK_LEFT, SPEAKER_BACK_RIGHT,
185
      SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT, 0 };
gbazin's avatar
   
gbazin committed
186

187
188
189
/*****************************************************************************
 * Local prototypes.
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
190
191
192
static int  OpenAudio  ( vlc_object_t * );
static void CloseAudio ( vlc_object_t * );
static void Play       ( aout_instance_t * );
193
194

/* local functions */
gbazin's avatar
   
gbazin committed
195
196
static void Probe             ( aout_instance_t * );
static int  InitDirectSound   ( aout_instance_t * );
197
198
static int  CreateDSBuffer    ( aout_instance_t *, int, int, int, int, int, bool );
static int  CreateDSBufferPCM ( aout_instance_t *, int*, int, int, int, bool );
gbazin's avatar
   
gbazin committed
199
200
201
202
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
203
204
205
/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
206
207
208
209
210
211
212
213
214
#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
215
vlc_module_begin();
216
    set_description( _("DirectX audio output") );
217
    set_shortname( "DirectX" );
gbazin's avatar
   
gbazin committed
218
    set_capability( "audio output", 100 );
zorglub's avatar
zorglub committed
219
220
    set_category( CAT_AUDIO );
    set_subcategory( SUBCAT_AUDIO_AOUT );
gbazin's avatar
   
gbazin committed
221
    add_shortcut( "directx" );
222
    add_integer( "directx-audio-device", 0, NULL, DEVICE_TEXT,
223
                 DEVICE_LONGTEXT, true );
dionoea's avatar
dionoea committed
224
    add_bool( "directx-audio-float32", 0, 0, FLOAT_TEXT,
225
              FLOAT_LONGTEXT, true );
gbazin's avatar
   
gbazin committed
226
227
228
    set_callbacks( OpenAudio, CloseAudio );
vlc_module_end();

229
230
231
232
233
/*****************************************************************************
 * OpenAudio: open the audio device
 *****************************************************************************
 * This function opens and setups Direct Sound.
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
234
static int OpenAudio( vlc_object_t *p_this )
235
{
gbazin's avatar
   
gbazin committed
236
    aout_instance_t * p_aout = (aout_instance_t *)p_this;
gbazin's avatar
   
gbazin committed
237
    vlc_value_t val;
238

gbazin's avatar
   
gbazin committed
239
    msg_Dbg( p_aout, "OpenAudio" );
240
241

   /* Allocate structure */
gbazin's avatar
   
gbazin committed
242
243
    p_aout->output.p_sys = malloc( sizeof( aout_sys_t ) );
    if( p_aout->output.p_sys == NULL )
244
245
    {
        msg_Err( p_aout, "out of memory" );
246
        return VLC_ENOMEM;
247
248
249
    }

    /* Initialize some variables */
gbazin's avatar
   
gbazin committed
250
251
252
    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
253
    p_aout->output.p_sys->b_playing = 0;
gbazin's avatar
   
gbazin committed
254
255

    p_aout->output.pf_play = Play;
256
    aout_VolumeSoftInit( p_aout );
257

258
259
260
261
262
263
264
265
266
    /* 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;

267
    /* Initialise DirectSound */
gbazin's avatar
   
gbazin committed
268
    if( InitDirectSound( p_aout ) )
269
    {
gbazin's avatar
   
gbazin committed
270
271
        msg_Err( p_aout, "cannot initialize DirectSound" );
        goto error;
272
273
    }

gbazin's avatar
   
gbazin committed
274
275
276
277
278
279
280
281
    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
282
        goto error;
gbazin's avatar
   
gbazin committed
283
284
285
    }

    /* Open the device */
gbazin's avatar
   
gbazin committed
286
    if( val.i_int == AOUT_VAR_SPDIF )
287
    {
gbazin's avatar
   
gbazin committed
288
289
290
291
292
293
294
295
296
297
298
299
300
        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,
301
                            p_aout->output.p_sys->i_frame_size, false )
gbazin's avatar
   
gbazin committed
302
303
            != VLC_SUCCESS )
        {
gbazin's avatar
   
gbazin committed
304
            msg_Err( p_aout, "cannot open directx audio device" );
gbazin's avatar
   
gbazin committed
305
306
307
308
309
310
311
312
            free( p_aout->output.p_sys );
            return VLC_EGENERIC;
        }

        aout_VolumeNoneInit( p_aout );
    }
    else
    {
gbazin's avatar
   
gbazin committed
313
        if( val.i_int == AOUT_VAR_5_1 )
gbazin's avatar
   
gbazin committed
314
315
316
317
318
319
        {
            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;
        }
320
321
322
323
324
325
        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
326
        else if( val.i_int == AOUT_VAR_2F2R )
gbazin's avatar
   
gbazin committed
327
328
329
330
331
        {
            p_aout->output.output.i_physical_channels
                = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
                   | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
        }
gbazin's avatar
   
gbazin committed
332
        else if( val.i_int == AOUT_VAR_MONO )
gbazin's avatar
   
gbazin committed
333
334
335
336
337
338
339
340
        {
            p_aout->output.output.i_physical_channels = AOUT_CHAN_CENTER;
        }
        else
        {
            p_aout->output.output.i_physical_channels
                = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
        }
341

gbazin's avatar
   
gbazin committed
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 ),
345
                               p_aout->output.output.i_rate, false )
gbazin's avatar
   
gbazin committed
346
            != VLC_SUCCESS )
gbazin's avatar
   
gbazin committed
347
        {
gbazin's avatar
   
gbazin committed
348
            msg_Err( p_aout, "cannot open directx audio device" );
gbazin's avatar
   
gbazin committed
349
350
            free( p_aout->output.p_sys );
            return VLC_EGENERIC;
gbazin's avatar
   
gbazin committed
351
        }
gbazin's avatar
   
gbazin committed
352
353
354
355
356

        /* 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
357
    }
358

359
360
361
362
363
364
365
366
367
    /* 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
368
369
370
371
    /* 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
372
                           DirectSoundThread,
373
                           VLC_THREAD_PRIORITY_HIGHEST, false ) )
Christophe Massiot's avatar
Christophe Massiot committed
374
375
    {
        msg_Err( p_aout, "cannot create DirectSoundThread" );
376
        CloseHandle( p_aout->output.p_sys->p_notif->event );
377
        vlc_object_release( p_aout->output.p_sys->p_notif );
378
        p_aout->output.p_sys->p_notif = NULL;
Christophe Massiot's avatar
Christophe Massiot committed
379
380
381
382
383
        goto error;
    }

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

gbazin's avatar
   
gbazin committed
384
    return VLC_SUCCESS;
Christophe Massiot's avatar
Christophe Massiot committed
385
386

 error:
gbazin's avatar
   
gbazin committed
387
    CloseAudio( VLC_OBJECT(p_aout) );
388
    return VLC_EGENERIC;
gbazin's avatar
   
gbazin committed
389
390
}

gbazin's avatar
   
gbazin committed
391
392
393
394
395
/*****************************************************************************
 * Probe: probe the audio device for available formats and channels
 *****************************************************************************/
static void Probe( aout_instance_t * p_aout )
{
gbazin's avatar
   
gbazin committed
396
    vlc_value_t val, text;
gbazin's avatar
   
gbazin committed
397
398
399
400
    int i_format;
    unsigned int i_physical_channels;
    DWORD ui_speaker_config;

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

    /* 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,
412
                               p_aout->output.output.i_rate, true )
gbazin's avatar
   
gbazin committed
413
414
            == VLC_SUCCESS )
        {
gbazin's avatar
   
gbazin committed
415
            val.i_int = AOUT_VAR_5_1;
416
            text.psz_string = "5.1";
gbazin's avatar
   
gbazin committed
417
418
            var_Change( p_aout, "audio-device",
                        VLC_VAR_ADDCHOICE, &val, &text );
gbazin's avatar
   
gbazin committed
419
420
421
422
            msg_Dbg( p_aout, "device supports 5.1 channels" );
        }
    }

423
424
425
426
427
428
429
    /* 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,
430
                               p_aout->output.output.i_rate, true )
431
432
433
434
435
436
437
438
439
440
            == 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
441
442
443
444
445
446
447
    /* 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,
448
                               p_aout->output.output.i_rate, true )
gbazin's avatar
   
gbazin committed
449
450
            == VLC_SUCCESS )
        {
gbazin's avatar
   
gbazin committed
451
452
453
454
            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
455
456
457
458
459
460
461
            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,
462
                           p_aout->output.output.i_rate, true )
gbazin's avatar
   
gbazin committed
463
464
        == VLC_SUCCESS )
    {
gbazin's avatar
   
gbazin committed
465
466
467
        val.i_int = AOUT_VAR_STEREO;
        text.psz_string = N_("Stereo");
        var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
468
        var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT, &val, NULL );
gbazin's avatar
   
gbazin committed
469
470
471
472
473
474
        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,
475
                           p_aout->output.output.i_rate, true )
gbazin's avatar
   
gbazin committed
476
477
        == VLC_SUCCESS )
    {
gbazin's avatar
   
gbazin committed
478
479
480
        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
481
482
483
484
485
486
487
488
489
490
491
492
493
        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
494
        val.i_int = AOUT_VAR_5_1;
gbazin's avatar
   
gbazin committed
495
496
        break;
    case DSSPEAKER_QUAD:
gbazin's avatar
   
gbazin committed
497
        val.i_int = AOUT_VAR_2F2R;
gbazin's avatar
   
gbazin committed
498
        break;
gbazin's avatar
   
gbazin committed
499
500
#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
501
    case DSSPEAKER_MONO:
gbazin's avatar
   
gbazin committed
502
        val.i_int = AOUT_VAR_MONO;
gbazin's avatar
   
gbazin committed
503
        break;
gbazin's avatar
   
gbazin committed
504
#endif
gbazin's avatar
   
gbazin committed
505
506
507
    case DSSPEAKER_SURROUND:
    case DSSPEAKER_STEREO:
    default:
gbazin's avatar
   
gbazin committed
508
        val.i_int = AOUT_VAR_STEREO;
gbazin's avatar
   
gbazin committed
509
510
511
512
        break;
    }
    var_Set( p_aout, "audio-device", val );

gbazin's avatar
   
gbazin committed
513
514
515
516
517
518
519
    /* 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,
520
                            AOUT_SPDIF_SIZE, true )
gbazin's avatar
   
gbazin committed
521
522
523
            == VLC_SUCCESS )
        {
            msg_Dbg( p_aout, "device supports A/52 over S/PDIF" );
gbazin's avatar
   
gbazin committed
524
525
526
527
            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
528
529
530
531
532
            if( config_GetInt( p_aout, "spdif" ) )
                var_Set( p_aout, "audio-device", val );
        }
    }

gbazin's avatar
   
gbazin committed
533
534
535
536
537
538
539
540
    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
541
542
    var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );

543
    val.b_bool = true;
gbazin's avatar
   
gbazin committed
544
545
546
    var_Set( p_aout, "intf-change", val );
}

gbazin's avatar
   
gbazin committed
547
/*****************************************************************************
gbazin's avatar
   
gbazin committed
548
549
550
 * 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
551
 *****************************************************************************/
552
static void Play( aout_instance_t *p_aout )
gbazin's avatar
   
gbazin committed
553
{
gbazin's avatar
   
gbazin committed
554
555
556
    if( !p_aout->output.p_sys->b_playing )
    {
        aout_buffer_t *p_buffer;
557
        int i;
gbazin's avatar
   
gbazin committed
558
559
560
561
562
563
564
565

        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 */
566
567
568
569
570
571
        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
572
573

        /* wake up the audio output thread */
574
        SetEvent( p_aout->output.p_sys->p_notif->event );
gbazin's avatar
   
gbazin committed
575
    }
576
577
578
579
580
}

/*****************************************************************************
 * CloseAudio: close the audio device
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
581
static void CloseAudio( vlc_object_t *p_this )
582
{
gbazin's avatar
   
gbazin committed
583
    aout_instance_t * p_aout = (aout_instance_t *)p_this;
584
    aout_sys_t *p_sys = p_aout->output.p_sys;
585

586
    msg_Dbg( p_aout, "closing audio device" );
587
588

    /* kill the position notification thread, if any */
589
    if( p_sys->p_notif )
590
    {
591
        vlc_object_detach( p_sys->p_notif );
592
593
594
        vlc_object_kill( p_sys->p_notif );
        /* wake up the audio thread if needed */
        if( !p_sys->b_playing ) SetEvent( p_sys->p_notif->event );
gbazin's avatar
   
gbazin committed
595

596
        vlc_thread_join( p_sys->p_notif );
597
        vlc_object_release( p_sys->p_notif );
598
599
600
    }

    /* release the secondary buffer */
gbazin's avatar
   
gbazin committed
601
    DestroyDSBuffer( p_aout );
602
603

    /* finally release the DirectSound object */
604
    if( p_sys->p_dsobject ) IDirectSound_Release( p_sys->p_dsobject );
605
 
606
    /* free DSOUND.DLL */
607
    if( p_sys->hdsound_dll ) FreeLibrary( p_sys->hdsound_dll );
gbazin's avatar
   
gbazin committed
608

609
    free( p_aout->output.p_sys->p_device_guid );
610
    free( p_sys );
611
612
}

613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
/*****************************************************************************
 * 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;
}

634
/*****************************************************************************
gbazin's avatar
   
gbazin committed
635
 * InitDirectSound: handle all the gory details of DirectSound initialisation
636
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
637
static int InitDirectSound( aout_instance_t *p_aout )
638
639
{
    HRESULT (WINAPI *OurDirectSoundCreate)(LPGUID, LPDIRECTSOUND *, LPUNKNOWN);
640
    HRESULT (WINAPI *OurDirectSoundEnumerate)(LPDSENUMCALLBACK, LPVOID);
641

gbazin's avatar
   
gbazin committed
642
643
    p_aout->output.p_sys->hdsound_dll = LoadLibrary("DSOUND.DLL");
    if( p_aout->output.p_sys->hdsound_dll == NULL )
644
    {
gbazin's avatar
   
gbazin committed
645
646
        msg_Warn( p_aout, "cannot open DSOUND.DLL" );
        goto error;
647
648
    }

649
650
651
    OurDirectSoundCreate = (void *)
        GetProcAddress( p_aout->output.p_sys->hdsound_dll,
                        "DirectSoundCreate" );
652
653
    if( OurDirectSoundCreate == NULL )
    {
gbazin's avatar
   
gbazin committed
654
655
        msg_Warn( p_aout, "GetProcAddress FAILED" );
        goto error;
656
657
    }

658
659
660
661
662
663
664
    /* Get DirectSoundEnumerate */
    OurDirectSoundEnumerate = (void *)
       GetProcAddress( p_aout->output.p_sys->hdsound_dll,
                       "DirectSoundEnumerateA" );
    if( OurDirectSoundEnumerate )
    {
        /* Attempt enumeration */
665
        if( FAILED( OurDirectSoundEnumerate( CallBackDirectSoundEnum,
666
667
668
669
670
671
                                             p_aout ) ) )
        {
            msg_Dbg( p_aout, "enumeration of DirectSound devices failed" );
        }
    }

672
    /* Create the direct sound object */
673
    if FAILED( OurDirectSoundCreate( p_aout->output.p_sys->p_device_guid,
674
                                     &p_aout->output.p_sys->p_dsobject,
gbazin's avatar
   
gbazin committed
675
                                     NULL ) )
676
677
    {
        msg_Warn( p_aout, "cannot create a direct sound device" );
gbazin's avatar
   
gbazin committed
678
        goto error;
679
680
681
682
683
684
685
686
687
688
689
690
    }

    /* 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
691
692
693
    if( IDirectSound_SetCooperativeLevel( p_aout->output.p_sys->p_dsobject,
                                          GetDesktopWindow(),
                                          DSSCL_EXCLUSIVE) )
694
695
696
697
    {
        msg_Warn( p_aout, "cannot set direct sound cooperative level" );
    }

gbazin's avatar
   
gbazin committed
698
    return VLC_SUCCESS;
gbazin's avatar
   
gbazin committed
699
700
701
702
703
704
705
706

 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
707
    return VLC_EGENERIC;
gbazin's avatar
   
gbazin committed
708

709
710
711
}

/*****************************************************************************
gbazin's avatar
   
gbazin committed
712
 * CreateDSBuffer: Creates a direct sound buffer of the required format.
713
714
715
716
717
718
719
720
 *****************************************************************************
 * 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
721
 * you have to release the current one and create another.
722
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
723
724
static int CreateDSBuffer( aout_instance_t *p_aout, int i_format,
                           int i_channels, int i_nb_channels, int i_rate,
725
                           int i_bytes_per_frame, bool b_probe )
726
{
gbazin's avatar
   
gbazin committed
727
    WAVEFORMATEXTENSIBLE waveformat;
728
    DSBUFFERDESC         dsbdesc;
gbazin's avatar
   
gbazin committed
729
    unsigned int         i;
730

gbazin's avatar
   
gbazin committed
731
732
    /* First set the sound buffer format */
    waveformat.dwChannelMask = 0;
733
    for( i = 0; i < sizeof(pi_channels_src)/sizeof(uint32_t); i++ )
gbazin's avatar
   
gbazin committed
734
    {
735
736
        if( i_channels & pi_channels_src[i] )
            waveformat.dwChannelMask |= pi_channels_in[i];
737
    }
gbazin's avatar
   
gbazin committed
738

gbazin's avatar
   
gbazin committed
739
    switch( i_format )
gbazin's avatar
   
gbazin committed
740
    {
gbazin's avatar
   
gbazin committed
741
742
    case VLC_FOURCC('s','p','d','i'):
        i_nb_channels = 2;
gbazin's avatar
   
gbazin committed
743
744
        /* To prevent channel re-ordering */
        waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
gbazin's avatar
   
gbazin committed
745
746
747
748
        waveformat.Format.wBitsPerSample = 16;
        waveformat.Samples.wValidBitsPerSample =
            waveformat.Format.wBitsPerSample;
        waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
gbazin's avatar
   
gbazin committed
749
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
gbazin's avatar
   
gbazin committed
750
        break;
gbazin's avatar
   
gbazin committed
751

gbazin's avatar
   
gbazin committed
752
    case VLC_FOURCC('f','l','3','2'):
gbazin's avatar
   
gbazin committed
753
754
755
756
        waveformat.Format.wBitsPerSample = sizeof(float) * 8;
        waveformat.Samples.wValidBitsPerSample =
            waveformat.Format.wBitsPerSample;
        waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
gbazin's avatar
   
gbazin committed
757
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
gbazin's avatar
   
gbazin committed
758
759
760
761
762
763
764
        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
765
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_PCM;
gbazin's avatar
   
gbazin committed
766
767
        break;
    }
768

gbazin's avatar
   
gbazin committed
769
770
771
772
773
774
775
    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;

776
777
778
    p_aout->output.p_sys->i_bits_per_sample = waveformat.Format.wBitsPerSample;
    p_aout->output.p_sys->i_channels = i_nb_channels;

779
780
781
782
783
784
    /* 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
785
786
787
788
789
790
791
792
793
794
    /* 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
795

796
797
798
        /* Needed for 5.1 on emu101k */
        dsbdesc.dwFlags |= DSBCAPS_LOCHARDWARE;
    }
gbazin's avatar
   
gbazin committed
799
800
801
802
803
804
805
806

    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) )
    {
807
808
809
810
811
        if( dsbdesc.dwFlags & DSBCAPS_LOCHARDWARE )
        {
            /* Try without DSBCAPS_LOCHARDWARE */
            dsbdesc.dwFlags &= ~DSBCAPS_LOCHARDWARE;
            if FAILED( IDirectSound_CreateSoundBuffer(
gbazin's avatar
   
gbazin committed
812
813
                   p_aout->output.p_sys->p_dsobject, &dsbdesc,
                   &p_aout->output.p_sys->p_dsbuffer, NULL) )
814
815
816
817
818
819
820
            {
                return VLC_EGENERIC;
            }
            if( !b_probe )
                msg_Dbg( p_aout, "couldn't use hardware sound buffer" );
        }
        else
gbazin's avatar
   
gbazin committed
821
822
823
        {
            return VLC_EGENERIC;
        }
824
825
    }

gbazin's avatar
   
gbazin committed
826
827
828
829
830
831
832
    /* 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
833

834
    p_aout->output.p_sys->i_frame_size = i_bytes_per_frame;
gbazin's avatar
   
gbazin committed
835
    p_aout->output.p_sys->i_channel_mask = waveformat.dwChannelMask;
836
837
838
839
840
841
842
843
844
    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
845

gbazin's avatar
   
gbazin committed
846
    return VLC_SUCCESS;
847
848
849
}

/*****************************************************************************
gbazin's avatar
   
gbazin committed
850
851
852
853
854
855
856
 * 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,
857
                              bool b_probe )
gbazin's avatar
   
gbazin committed
858
{
859
860
861
862
    vlc_value_t val;

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

gbazin's avatar
   
gbazin committed
863
864
    /* Float32 audio samples are not supported for 5.1 output on the emu101k */

865
    if( !val.b_bool || i_nb_channels > 2 ||
gbazin's avatar
   
gbazin committed
866
        CreateDSBuffer( p_aout, VLC_FOURCC('f','l','3','2'),
gbazin's avatar
   
gbazin committed
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
                        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
893
 *****************************************************************************
gbazin's avatar
   
gbazin committed
894
 * This function destroys the secondary buffer.
895
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
896
static void DestroyDSBuffer( aout_instance_t *p_aout )
897
{
gbazin's avatar
   
gbazin committed
898
    if( p_aout->output.p_sys->p_dsbuffer )
899
    {
gbazin's avatar
   
gbazin committed
900
901
        IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
        p_aout->output.p_sys->p_dsbuffer = NULL;
902
903
904
    }
}

gbazin's avatar
   
gbazin committed
905
/*****************************************************************************
gbazin's avatar
   
gbazin committed
906
 * FillBuffer: Fill in one of the direct sound frame buffers.
gbazin's avatar
   
gbazin committed
907
908
909
 *****************************************************************************
 * Returns VLC_SUCCESS on success.
 *****************************************************************************/
gbazin's avatar
   
gbazin committed
910
911
static int FillBuffer( aout_instance_t *p_aout, int i_frame,
                       aout_buffer_t *p_buffer )
gbazin's avatar
   
gbazin committed
912
913
{
    notification_thread_t *p_notif = p_aout->output.p_sys->p_notif;
914
    aout_sys_t *p_sys = p_aout->output.p_sys;
gbazin's avatar
   
gbazin committed
915
916
917
918
919
920
    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(
921
                p_sys->p_dsbuffer,                              /* DS buffer */
gbazin's avatar
   
gbazin committed
922
923
924
925
926
927
928
929
930
                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 )
    {
931
        IDirectSoundBuffer_Restore( p_sys->p_dsbuffer );
gbazin's avatar
   
gbazin committed
932
        dsresult = IDirectSoundBuffer_Lock(
933
                               p_sys->p_dsbuffer,
gbazin's avatar
   
gbazin committed
934
935
936
937
938
939
940
941
942
943
944
                               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
945
        if( p_buffer ) aout_BufferFree( p_buffer );
gbazin's avatar
   
gbazin committed
946
947
948
        return VLC_EGENERIC;
    }

gbazin's avatar
   
gbazin committed
949
950
951
952
953
    if( p_buffer == NULL )
    {
        memset( p_write_position, 0, l_bytes1 );
    }
    else
gbazin's avatar
   
gbazin committed
954
    {
955
956
957
958
959
960
961
962
        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 );
        }

963
        p_aout->p_libvlc->pf_memcpy( p_write_position, p_buffer->p_buffer,
gbazin's avatar
   
gbazin committed
964
                                  l_bytes1 );
gbazin's avatar
   
gbazin committed
965
966
        aout_BufferFree( p_buffer );
    }
gbazin's avatar
   
gbazin committed
967
968

    /* Now the data has been copied, unlock the buffer */
969
    IDirectSoundBuffer_Unlock( p_sys->p_dsbuffer, p_write_position, l_bytes1,
gbazin's avatar
   
gbazin committed
970
971
                               p_wrap_around, l_bytes2 );

972
    p_notif->i_write_slot = (i_frame + 1) % FRAMES_NUM;
gbazin's avatar
   
gbazin committed
973
974
975
    return VLC_SUCCESS;
}

976
/*****************************************************************************
977
 * DirectSoundThread: this thread will capture play notification events.
978
 *****************************************************************************
gbazin's avatar
   
gbazin committed
979
980
 * We use this thread to emulate a callback mechanism. The thread probes for
 * event notification and fills up the DS secondary buffer when needed.
981
982
983
 *****************************************************************************/
static void DirectSoundThread( notification_thread_t *p_notif )
{
gbazin's avatar
   
gbazin committed
984
    aout_instance_t *p_aout = p_notif->p_aout;
985
    bool b_sleek;
986
987
988
    mtime_t last_time;
    HRESULT dsresult;
    long l_queued = 0;
989

gbazin's avatar
   
gbazin committed
990
991
992
    /* 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');

993
994
995
996
997
    /* Tell the main thread that we are ready */
    vlc_thread_ready( p_notif );

    msg_Dbg( p_notif, "DirectSoundThread ready" );

gbazin's avatar
   
gbazin committed
998
    /* Wait here until Play() is called */
999
    WaitForSingleObject( p_notif->event, INFINITE );
gbazin's avatar
   
gbazin committed
1000

gbazin's avatar
   
gbazin committed
1001
1002
1003
    if( !p_notif->b_die )
    {
        mwait( p_notif->start_date - AOUT_PTS_TOLERANCE / 2 );
1004

gbazin's avatar
   
gbazin committed
1005
1006
1007
1008
1009
        /* 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
1010
        if( dsresult == DSERR_BUFFERLOST )
1011
        {
gbazin's avatar
   
gbazin committed
1012
            IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
gbazin's avatar
   
gbazin committed
1013
1014
1015
1016
1017
            dsresult = IDirectSoundBuffer_Play(
                                            p_aout->output.p_sys->p_dsbuffer,
                                            0,                     /* Unused */
                                            0,                     /* Unused */
                                            DSBPLAY_LOOPING );      /* Flags */
1018
        }
gbazin's avatar
   
gbazin committed
1019
        if( dsresult != DS_OK )
1020
        {
gbazin's avatar
   
gbazin committed
1021
            msg_Err( p_aout, "cannot start playing buffer" );
1022
        }
gbazin's avatar
   
gbazin committed
1023
    }
1024
    last_time = mdate();
gbazin's avatar
   
gbazin committed
1025
1026
1027

    while( !p_notif->b_die )
    {
1028
1029
1030
        long l_read, l_free_slots;
        mtime_t mtime = mdate();
        int i;
gbazin's avatar
   
gbazin committed
1031

1032
1033
1034
        /*
         * Fill in as much audio data as we can in our circular buffer
         */
gbazin's avatar
   
gbazin committed
1035

1036
1037
1038
        /* Find out current play position */
        if FAILED( IDirectSoundBuffer_GetCurrentPosition(
                   p_aout->output.p_sys->p_dsbuffer, &l_read, NULL ) )
gbazin's avatar
   
gbazin committed
1039
        {
1040
1041
            msg_Err( p_aout, "GetCurrentPosition() failed!" );
            l_read = 0;
gbazin's avatar
   
gbazin committed
1042
1043
        }

1044
1045
1046
        /* Detect underruns */
        if( l_queued && mtime - last_time >
            I64C(1000000) * l_queued / p_aout->output.output.i_rate )
1047
        {
1048
1049
1050
            msg_Dbg( p_aout, "detected underrun!" );
        }
        last_time = mtime;
gbazin's avatar
   
gbazin committed
1051

1052
1053
1054
1055
1056
        /* 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;
1057

1058
1059
1060
1061
1062
        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
1063
1064
1065

            /* If there is no audio data available and we have some buffered
             * already, then just wait for the next time */
1066
            if( !p_buffer && (i || l_queued / FRAME_SIZE) ) break;
gbazin's avatar
   
gbazin committed
1067

1068
1069
            if( FillBuffer( p_aout, p_notif->i_write_slot % FRAMES_NUM,
                            p_buffer ) != VLC_SUCCESS ) break;
gbazin's avatar
   
gbazin committed
1070
        }
1071

1072
1073
1074
        /* Sleep a reasonable amount of time */
        l_queued += (i * FRAME_SIZE);
        msleep( I64C(1000000) * l_queued / p_aout->output.output.i_rate / 2 );
1075
1076
    }

gbazin's avatar
   
gbazin committed
1077
1078
1079
    /* make sure the buffer isn't playing */
    IDirectSoundBuffer_Stop( p_aout->output.p_sys->p_dsbuffer );

1080
1081
    /* free the event */
    CloseHandle( p_notif->event );
1082
1083
1084

    msg_Dbg( p_notif, "DirectSoundThread exiting" );
}