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
            vlc_object_kill( p_sys->p_notif );
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