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
        vlc_memcpy( p_write_position, p_buffer->p_buffer, l_bytes1 );
gbazin's avatar
 
gbazin committed
964 965
        aout_BufferFree( p_buffer );
    }
gbazin's avatar
 
gbazin committed
966 967

    /* Now the data has been copied, unlock the buffer */
968
    IDirectSoundBuffer_Unlock( p_sys->p_dsbuffer, p_write_position, l_bytes1,
gbazin's avatar
 
gbazin committed
969 970
                               p_wrap_around, l_bytes2 );

971
    p_notif->i_write_slot = (i_frame + 1) % FRAMES_NUM;
gbazin's avatar
 
gbazin committed
972 973 974
    return VLC_SUCCESS;
}

975
/*****************************************************************************
976
 * DirectSoundThread: this thread will capture play notification events.
977
 *****************************************************************************