directx.c 41.7 KB
Newer Older
1
/*****************************************************************************
2
 * directx.c: Windows DirectX audio output method
3 4
 *****************************************************************************
 * Copyright (C) 2001 VideoLAN
Gildas Bazin's avatar
 
Gildas Bazin committed
5
 * $Id: directx.c,v 1.21 2003/06/11 18:20:38 gbazin Exp $
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
 *
 * Authors: Gildas Bazin <gbazin@netcourrier.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

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

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

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

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

Gildas Bazin's avatar
 
Gildas Bazin committed
41
#define FRAME_SIZE 2048              /* The size is in samples, not in bytes */
Gildas Bazin's avatar
 
Gildas Bazin committed
42 43 44 45 46
#define FRAMES_NUM 4

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

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

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

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

#ifndef WAVE_FORMAT_EXTENSIBLE
#define  WAVE_FORMAT_EXTENSIBLE   0xFFFE
#endif

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

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

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

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

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

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

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

} notification_thread_t;

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

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

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

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

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

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

185 186 187
/*****************************************************************************
 * Local prototypes.
 *****************************************************************************/
Gildas Bazin's avatar
 
Gildas Bazin 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 */
Gildas Bazin's avatar
 
Gildas Bazin committed
193 194 195 196 197 198 199 200 201
static void Probe             ( aout_instance_t * );
static int  InitDirectSound   ( aout_instance_t * );
static int  CreateDSBuffer    ( aout_instance_t *, int, int, int, int, int, vlc_bool_t );
static int  CreateDSBufferPCM ( aout_instance_t *, int*, int, int, int, vlc_bool_t );
static void DestroyDSBuffer   ( aout_instance_t * );
static void DirectSoundThread ( notification_thread_t * );
static int  FillBuffer        ( aout_instance_t *, int, aout_buffer_t * );

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Gildas Bazin's avatar
 
Gildas Bazin committed
326 327 328 329 330
        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 )
Gildas Bazin's avatar
 
Gildas Bazin committed
331
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
332
            msg_Err( p_aout, "cannot open directx audio device" );
Gildas Bazin's avatar
 
Gildas Bazin committed
333 334
            free( p_aout->output.p_sys );
            return VLC_EGENERIC;
Gildas Bazin's avatar
 
Gildas Bazin committed
335
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
336 337 338 339 340 341 342 343

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

        aout_VolumeSoftInit( p_aout );
Gildas Bazin's avatar
 
Gildas Bazin committed
344
    }
345

Christophe Massiot's avatar
Christophe Massiot committed
346 347 348 349
    /* 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",
Gildas Bazin's avatar
 
Gildas Bazin committed
350
                           DirectSoundThread,
Gildas Bazin's avatar
 
Gildas Bazin committed
351
                           VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
Christophe Massiot's avatar
Christophe Massiot committed
352 353 354 355 356 357 358
    {
        msg_Err( p_aout, "cannot create DirectSoundThread" );
        goto error;
    }

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

Gildas Bazin's avatar
 
Gildas Bazin committed
359
    return VLC_SUCCESS;
Christophe Massiot's avatar
Christophe Massiot committed
360 361

 error:
Gildas Bazin's avatar
 
Gildas Bazin committed
362
    CloseAudio( VLC_OBJECT(p_aout) );
363
    return VLC_EGENERIC;
Gildas Bazin's avatar
 
Gildas Bazin committed
364 365
}

Gildas Bazin's avatar
 
Gildas Bazin committed
366 367 368 369 370
/*****************************************************************************
 * Probe: probe the audio device for available formats and channels
 *****************************************************************************/
static void Probe( aout_instance_t * p_aout )
{
Gildas Bazin's avatar
 
Gildas Bazin committed
371
    vlc_value_t val, text;
Gildas Bazin's avatar
 
Gildas Bazin committed
372 373 374 375
    int i_format;
    unsigned int i_physical_channels;
    DWORD ui_speaker_config;

Gildas Bazin's avatar
 
Gildas Bazin committed
376 377 378
    var_Create( p_aout, "audio-device", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
    text.psz_string = _("Audio device");
    var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
Gildas Bazin's avatar
 
Gildas Bazin committed
379 380 381 382 383 384 385 386 387 388 389

    /* 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 )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
390 391 392 393
            val.i_int = AOUT_VAR_5_1;
            text.psz_string = N_("5.1");
            var_Change( p_aout, "audio-device",
                        VLC_VAR_ADDCHOICE, &val, &text );
Gildas Bazin's avatar
 
Gildas Bazin committed
394 395 396 397 398 399 400 401 402 403 404 405 406 407
            msg_Dbg( p_aout, "device supports 5.1 channels" );
        }
    }

    /* 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 )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
408 409 410 411
            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 );
Gildas Bazin's avatar
 
Gildas Bazin committed
412 413 414 415 416 417 418 419 420 421
            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 )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
422 423 424
        val.i_int = AOUT_VAR_STEREO;
        text.psz_string = N_("Stereo");
        var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
Gildas Bazin's avatar
 
Gildas Bazin committed
425 426 427 428 429 430 431 432 433
        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 )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
434 435 436
        val.i_int = AOUT_VAR_MONO;
        text.psz_string = N_("Mono");
        var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE, &val, &text );
Gildas Bazin's avatar
 
Gildas Bazin committed
437 438 439 440 441 442 443 444 445 446 447 448 449
        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:
Gildas Bazin's avatar
 
Gildas Bazin committed
450
        val.i_int = AOUT_VAR_5_1;
Gildas Bazin's avatar
 
Gildas Bazin committed
451 452
        break;
    case DSSPEAKER_QUAD:
Gildas Bazin's avatar
 
Gildas Bazin committed
453
        val.i_int = AOUT_VAR_2F2R;
Gildas Bazin's avatar
 
Gildas Bazin committed
454 455
        break;
    case DSSPEAKER_MONO:
Gildas Bazin's avatar
 
Gildas Bazin committed
456
        val.i_int = AOUT_VAR_MONO;
Gildas Bazin's avatar
 
Gildas Bazin committed
457 458 459 460
        break;
    case DSSPEAKER_SURROUND:
    case DSSPEAKER_STEREO:
    default:
Gildas Bazin's avatar
 
Gildas Bazin committed
461
        val.i_int = AOUT_VAR_STEREO;
Gildas Bazin's avatar
 
Gildas Bazin committed
462 463 464 465
        break;
    }
    var_Set( p_aout, "audio-device", val );

Gildas Bazin's avatar
 
Gildas Bazin committed
466 467 468 469 470 471 472 473 474 475 476
    /* 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" );
Gildas Bazin's avatar
 
Gildas Bazin committed
477 478 479 480
            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 );
Gildas Bazin's avatar
 
Gildas Bazin committed
481 482 483 484 485
            if( config_GetInt( p_aout, "spdif" ) )
                var_Set( p_aout, "audio-device", val );
        }
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
486 487 488 489 490 491 492 493
    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;
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
494 495 496 497 498 499
    var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );

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

Gildas Bazin's avatar
 
Gildas Bazin committed
500
/*****************************************************************************
Gildas Bazin's avatar
 
Gildas Bazin committed
501 502 503
 * 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.
Gildas Bazin's avatar
 
Gildas Bazin committed
504
 *****************************************************************************/
505
static void Play( aout_instance_t *p_aout )
Gildas Bazin's avatar
 
Gildas Bazin committed
506
{
Gildas Bazin's avatar
 
Gildas Bazin committed
507 508 509 510 511 512 513 514 515 516 517 518
    if( !p_aout->output.p_sys->b_playing )
    {
        aout_buffer_t *p_buffer;

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

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

        /* fill in the first samples */
        p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
Gildas Bazin's avatar
 
Gildas Bazin committed
519
        FillBuffer( p_aout, 0, p_buffer );
Gildas Bazin's avatar
 
Gildas Bazin committed
520 521 522 523

        /* wake up the audio output thread */
        SetEvent( p_aout->output.p_sys->p_notif->p_events[0].hEventNotify );
    }
524 525 526 527 528
}

/*****************************************************************************
 * CloseAudio: close the audio device
 *****************************************************************************/
Gildas Bazin's avatar
 
Gildas Bazin committed
529
static void CloseAudio( vlc_object_t *p_this )
530
{
Gildas Bazin's avatar
 
Gildas Bazin committed
531
    aout_instance_t * p_aout = (aout_instance_t *)p_this;
532

Gildas Bazin's avatar
 
Gildas Bazin committed
533
    msg_Dbg( p_aout, "CloseAudio" );
534 535

    /* kill the position notification thread, if any */
Gildas Bazin's avatar
 
Gildas Bazin committed
536
    if( p_aout->output.p_sys->p_notif )
537
    {
538
        vlc_object_detach( p_aout->output.p_sys->p_notif );
Gildas Bazin's avatar
 
Gildas Bazin committed
539 540 541
        if( p_aout->output.p_sys->p_notif->b_thread )
        {
            p_aout->output.p_sys->p_notif->b_die = 1;
Gildas Bazin's avatar
 
Gildas Bazin committed
542 543 544 545 546 547

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

Gildas Bazin's avatar
 
Gildas Bazin committed
548 549 550
            vlc_thread_join( p_aout->output.p_sys->p_notif );
        }
        vlc_object_destroy( p_aout->output.p_sys->p_notif );
551 552 553
    }

    /* release the secondary buffer */
Gildas Bazin's avatar
 
Gildas Bazin committed
554
    DestroyDSBuffer( p_aout );
555 556

    /* finally release the DirectSound object */
Gildas Bazin's avatar
 
Gildas Bazin committed
557 558
    if( p_aout->output.p_sys->p_dsobject )
        IDirectSound_Release( p_aout->output.p_sys->p_dsobject );
559 560
    
    /* free DSOUND.DLL */
Gildas Bazin's avatar
 
Gildas Bazin committed
561 562
    if( p_aout->output.p_sys->hdsound_dll )
       FreeLibrary( p_aout->output.p_sys->hdsound_dll );
563

Gildas Bazin's avatar
 
Gildas Bazin committed
564 565 566
    if( p_aout->output.p_sys->pi_chan_table )
        free( p_aout->output.p_sys->pi_chan_table );

567
    free( p_aout->output.p_sys );
568 569 570
}

/*****************************************************************************
Gildas Bazin's avatar
 
Gildas Bazin committed
571
 * InitDirectSound: handle all the gory details of DirectSound initialisation
572
 *****************************************************************************/
Gildas Bazin's avatar
 
Gildas Bazin committed
573
static int InitDirectSound( aout_instance_t *p_aout )
574 575 576
{
    HRESULT (WINAPI *OurDirectSoundCreate)(LPGUID, LPDIRECTSOUND *, LPUNKNOWN);

Gildas Bazin's avatar
 
Gildas Bazin committed
577 578
    p_aout->output.p_sys->hdsound_dll = LoadLibrary("DSOUND.DLL");
    if( p_aout->output.p_sys->hdsound_dll == NULL )
579
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
580 581
        msg_Warn( p_aout, "cannot open DSOUND.DLL" );
        goto error;
582 583
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
584 585 586
    OurDirectSoundCreate = (void *)GetProcAddress(
                                           p_aout->output.p_sys->hdsound_dll,
                                           "DirectSoundCreate" );
587 588
    if( OurDirectSoundCreate == NULL )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
589 590
        msg_Warn( p_aout, "GetProcAddress FAILED" );
        goto error;
591 592 593
    }

    /* Create the direct sound object */
Gildas Bazin's avatar
 
Gildas Bazin committed
594 595
    if FAILED( OurDirectSoundCreate( NULL, &p_aout->output.p_sys->p_dsobject,
                                     NULL ) )
596 597
    {
        msg_Warn( p_aout, "cannot create a direct sound device" );
Gildas Bazin's avatar
 
Gildas Bazin committed
598
        goto error;
599 600 601 602 603 604 605 606 607 608 609 610
    }

    /* 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 */
Gildas Bazin's avatar
 
Gildas Bazin committed
611 612 613
    if( IDirectSound_SetCooperativeLevel( p_aout->output.p_sys->p_dsobject,
                                          GetDesktopWindow(),
                                          DSSCL_EXCLUSIVE) )
614 615 616 617
    {
        msg_Warn( p_aout, "cannot set direct sound cooperative level" );
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
618
    return VLC_SUCCESS;
Gildas Bazin's avatar
 
Gildas Bazin committed
619 620 621 622 623 624 625 626

 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;
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
627
    return VLC_EGENERIC;
Gildas Bazin's avatar
 
Gildas Bazin committed
628

629 630 631
}

/*****************************************************************************
Gildas Bazin's avatar
 
Gildas Bazin committed
632
 * CreateDSBuffer: Creates a direct sound buffer of the required format.
633 634 635 636 637 638 639 640
 *****************************************************************************
 * 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
Gildas Bazin's avatar
 
Gildas Bazin committed
641
 * you have to release the current one and create another.
642
 *****************************************************************************/
Gildas Bazin's avatar
 
Gildas Bazin committed
643 644 645
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 )
646
{
Gildas Bazin's avatar
 
Gildas Bazin committed
647
    WAVEFORMATEXTENSIBLE waveformat;
648
    DSBUFFERDESC         dsbdesc;
Gildas Bazin's avatar
 
Gildas Bazin committed
649
    unsigned int         i;
650

Gildas Bazin's avatar
 
Gildas Bazin committed
651 652 653
    /* First set the sound buffer format */
    waveformat.dwChannelMask = 0;
    for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
Gildas Bazin's avatar
 
Gildas Bazin committed
654
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
655 656
        if( i_channels & pi_channels_in[i] )
            waveformat.dwChannelMask |= pi_channels_out[i];
657
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
658

Gildas Bazin's avatar
 
Gildas Bazin committed
659
    switch( i_format )
Gildas Bazin's avatar
 
Gildas Bazin committed
660
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
661 662
    case VLC_FOURCC('s','p','d','i'):
        i_nb_channels = 2;
Gildas Bazin's avatar
 
Gildas Bazin committed
663 664
        /* To prevent channel re-ordering */
        waveformat.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
Gildas Bazin's avatar
 
Gildas Bazin committed
665 666 667 668
        waveformat.Format.wBitsPerSample = 16;
        waveformat.Samples.wValidBitsPerSample =
            waveformat.Format.wBitsPerSample;
        waveformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
Gildas Bazin's avatar
 
Gildas Bazin committed
669
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF;
Gildas Bazin's avatar
 
Gildas Bazin committed
670
        break;
Gildas Bazin's avatar
 
Gildas Bazin committed
671

Gildas Bazin's avatar
 
Gildas Bazin committed
672
    case VLC_FOURCC('f','l','3','2'):
Gildas Bazin's avatar
 
Gildas Bazin committed
673 674 675 676
        waveformat.Format.wBitsPerSample = sizeof(float) * 8;
        waveformat.Samples.wValidBitsPerSample =
            waveformat.Format.wBitsPerSample;
        waveformat.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
Gildas Bazin's avatar
 
Gildas Bazin committed
677
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
Gildas Bazin's avatar
 
Gildas Bazin committed
678 679 680 681 682 683 684
        break;

    case VLC_FOURCC('s','1','6','l'):
        waveformat.Format.wBitsPerSample = 16;
        waveformat.Samples.wValidBitsPerSample =
            waveformat.Format.wBitsPerSample;
        waveformat.Format.wFormatTag = WAVE_FORMAT_PCM;
Gildas Bazin's avatar
 
Gildas Bazin committed
685
        waveformat.SubFormat = _KSDATAFORMAT_SUBTYPE_PCM;
Gildas Bazin's avatar
 
Gildas Bazin committed
686 687
        break;
    }
688

Gildas Bazin's avatar
 
Gildas Bazin committed
689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706
    waveformat.Format.nChannels = i_nb_channels;
    waveformat.Format.nSamplesPerSec = i_rate;
    waveformat.Format.nBlockAlign =
        waveformat.Format.wBitsPerSample / 8 * i_nb_channels;
    waveformat.Format.nAvgBytesPerSec =
        waveformat.Format.nSamplesPerSec * waveformat.Format.nBlockAlign;

    /* Only use the new WAVE_FORMAT_EXTENSIBLE format for multichannel audio */
    if( i_nb_channels <= 2 )
    {
        waveformat.Format.cbSize = 0;
    }
    else
    {
        waveformat.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
        waveformat.Format.cbSize =
            sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
707

Gildas Bazin's avatar
 
Gildas Bazin committed
708 709

    /* Then fill in the direct sound descriptor */
Gildas Bazin's avatar
 
Gildas Bazin committed
710 711
    memset(&dsbdesc, 0, sizeof(DSBUFFERDESC));
    dsbdesc.dwSize = sizeof(DSBUFFERDESC);
712 713 714
    dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2/* Better position accuracy */
                    | DSBCAPS_CTRLPOSITIONNOTIFY     /* We need notification */
                    | DSBCAPS_GLOBALFOCUS;      /* Allows background playing */
Gildas Bazin's avatar
 
Gildas Bazin committed
715 716 717 718 719 720 721
    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) )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
722
        return VLC_EGENERIC;
723 724
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
725 726 727 728 729 730 731
    /* 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;
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
732

Gildas Bazin's avatar
 
Gildas Bazin committed
733 734
    /* Backup the size of a frame */
    p_aout->output.p_sys->p_notif->i_frame_size = i_bytes_per_frame;
735 736 737

    /* Now the secondary buffer is created, we need to setup its position
     * notification */
Gildas Bazin's avatar
 
Gildas Bazin committed
738 739 740 741 742 743 744
    for( i = 0; i < FRAMES_NUM; i++ )
    {
        p_aout->output.p_sys->p_notif->p_events[i].dwOffset = i *
            p_aout->output.p_sys->p_notif->i_frame_size;

        p_aout->output.p_sys->p_notif->i_frame_status[i] = FRAME_EMPTY;
    }
745 746

    /* Get the IDirectSoundNotify interface */
Gildas Bazin's avatar
 
Gildas Bazin committed
747 748 749 750
    if FAILED( IDirectSoundBuffer_QueryInterface(
                                p_aout->output.p_sys->p_dsbuffer,
                                &IID_IDirectSoundNotify,
                                (LPVOID *)&p_aout->output.p_sys->p_dsnotify ) )
751
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
752
        msg_Err( p_aout, "cannot get IDirectSoundNotify interface" );
Gildas Bazin's avatar
 
Gildas Bazin committed
753
        goto error;
754
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
755

756
    if FAILED( IDirectSoundNotify_SetNotificationPositions(
Gildas Bazin's avatar
 
Gildas Bazin committed
757 758
                                    p_aout->output.p_sys->p_dsnotify,
                                    FRAMES_NUM,
Gildas Bazin's avatar
 
Gildas Bazin committed
759
                                    p_aout->output.p_sys->p_notif->p_events ) )
760
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
761
        msg_Err( p_aout, "cannot set position notification" );
Gildas Bazin's avatar
 
Gildas Bazin committed
762
        goto error;
763
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
764

Gildas Bazin's avatar
 
Gildas Bazin committed
765 766
    p_aout->output.p_sys->i_channel_mask = waveformat.dwChannelMask;
    CheckReordering( p_aout, i_nb_channels );
Gildas Bazin's avatar
 
Gildas Bazin committed
767

Gildas Bazin's avatar
 
Gildas Bazin committed
768
    return VLC_SUCCESS;
Gildas Bazin's avatar
 
Gildas Bazin committed
769 770

 error:
Gildas Bazin's avatar
 
Gildas Bazin committed
771
    DestroyDSBuffer( p_aout );
772
    return VLC_EGENERIC;
773 774 775
}

/*****************************************************************************
Gildas Bazin's avatar
 
Gildas Bazin committed
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811
 * 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 )
{
    if( CreateDSBuffer( p_aout, VLC_FOURCC('f','l','3','2'),
                        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
812
 *****************************************************************************
Gildas Bazin's avatar
 
Gildas Bazin committed
813
 * This function destroys the secondary buffer.
814
 *****************************************************************************/
Gildas Bazin's avatar
 
Gildas Bazin committed
815
static void DestroyDSBuffer( aout_instance_t *p_aout )
816
{
Gildas Bazin's avatar
 
Gildas Bazin committed
817
    if( p_aout->output.p_sys->p_dsnotify )
818
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
819 820
        IDirectSoundNotify_Release( p_aout->output.p_sys->p_dsnotify );
        p_aout->output.p_sys->p_dsnotify = NULL;
821 822
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
823
    if( p_aout->output.p_sys->p_dsbuffer )
824
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
825 826
        IDirectSoundBuffer_Release( p_aout->output.p_sys->p_dsbuffer );
        p_aout->output.p_sys->p_dsbuffer = NULL;
827 828 829
    }
}

Gildas Bazin's avatar
 
Gildas Bazin committed
830
/*****************************************************************************
Gildas Bazin's avatar
 
Gildas Bazin committed
831
 * FillBuffer: Fill in one of the direct sound frame buffers.
Gildas Bazin's avatar
 
Gildas Bazin committed
832 833 834
 *****************************************************************************
 * Returns VLC_SUCCESS on success.
 *****************************************************************************/
Gildas Bazin's avatar
 
Gildas Bazin committed
835 836
static int FillBuffer( aout_instance_t *p_aout, int i_frame,
                       aout_buffer_t *p_buffer )
Gildas Bazin's avatar
 
Gildas Bazin committed
837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868
{
    notification_thread_t *p_notif = p_aout->output.p_sys->p_notif;
    void *p_write_position, *p_wrap_around;
    long l_bytes1, l_bytes2;
    HRESULT dsresult;

    /* Before copying anything, we have to lock the buffer */
    dsresult = IDirectSoundBuffer_Lock(
                p_aout->output.p_sys->p_dsbuffer,               /* DS buffer */
                i_frame * p_notif->i_frame_size,             /* Start offset */
                p_notif->i_frame_size,                    /* Number of bytes */
                &p_write_position,                  /* Address of lock start */
                &l_bytes1,       /* Count of bytes locked before wrap around */
                &p_wrap_around,            /* Buffer adress (if wrap around) */
                &l_bytes2,               /* Count of bytes after wrap around */
                0 );                                                /* Flags */
    if( dsresult == DSERR_BUFFERLOST )
    {
        IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
        dsresult = IDirectSoundBuffer_Lock(
                               p_aout->output.p_sys->p_dsbuffer,
                               i_frame * p_notif->i_frame_size,
                               p_notif->i_frame_size,
                               &p_write_position,
                               &l_bytes1,
                               &p_wrap_around,
                               &l_bytes2,
                               0 );
    }
    if( dsresult != DS_OK )
    {
        msg_Warn( p_notif, "cannot lock buffer" );
Gildas Bazin's avatar
 
Gildas Bazin committed
869
        if( p_buffer ) aout_BufferFree( p_buffer );
Gildas Bazin's avatar
 
Gildas Bazin committed
870 871 872
        return VLC_EGENERIC;
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890
    if( p_buffer == NULL )
    {
        memset( p_write_position, 0, l_bytes1 );
    }
    else if( p_aout->output.p_sys->b_chan_reorder )
    {
        /* Do the channel reordering here */

        if( p_aout->output.output.i_format ==  VLC_FOURCC('s','1','6','l') )
          InterleaveS16( (int16_t *)p_buffer->p_buffer,
                         (int16_t *)p_write_position,
                         p_aout->output.p_sys->pi_chan_table,
                         aout_FormatNbChannels( &p_aout->output.output ) );
        else
          InterleaveFloat32( (float *)p_buffer->p_buffer,
                             (float *)p_write_position,
                             p_aout->output.p_sys->pi_chan_table,
                             aout_FormatNbChannels( &p_aout->output.output ) );
Gildas Bazin's avatar
 
Gildas Bazin committed
891 892

        aout_BufferFree( p_buffer );
Gildas Bazin's avatar
 
Gildas Bazin committed
893 894
    }
    else
Gildas Bazin's avatar
 
Gildas Bazin committed
895
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
896 897
        p_aout->p_vlc->pf_memcpy( p_write_position, p_buffer->p_buffer,
                                  l_bytes1 );
Gildas Bazin's avatar
 
Gildas Bazin committed
898 899
        aout_BufferFree( p_buffer );
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
900 901 902 903 904 905 906 907 908

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

    return VLC_SUCCESS;
}

909 910 911
/*****************************************************************************
 * DirectSoundThread: this thread will capture play notification events. 
 *****************************************************************************
Gildas Bazin's avatar
 
Gildas Bazin committed
912 913
 * We use this thread to emulate a callback mechanism. The thread probes for
 * event notification and fills up the DS secondary buffer when needed.
914 915 916
 *****************************************************************************/
static void DirectSoundThread( notification_thread_t *p_notif )
{
Gildas Bazin's avatar
 
Gildas Bazin committed
917
    HANDLE  notification_events[FRAMES_NUM];
918
    HRESULT dsresult;
Gildas Bazin's avatar
 
Gildas Bazin committed
919
    aout_instance_t *p_aout = p_notif->p_aout;
Gildas Bazin's avatar
 
Gildas Bazin committed
920 921
    int i, i_which_frame, i_last_frame, i_next_frame;
    mtime_t mtime;
Gildas Bazin's avatar
 
Gildas Bazin committed
922
    vlc_bool_t b_sleek;
923

Gildas Bazin's avatar
 
Gildas Bazin committed
924 925
    for( i = 0; i < FRAMES_NUM; i++ )
        notification_events[i] = p_notif->p_events[i].hEventNotify;
926

Gildas Bazin's avatar
 
Gildas Bazin committed
927 928 929
    /* 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');

930 931 932 933 934
    /* Tell the main thread that we are ready */
    vlc_thread_ready( p_notif );

    msg_Dbg( p_notif, "DirectSoundThread ready" );

Gildas Bazin's avatar
 
Gildas Bazin committed
935 936
    /* Wait here until Play() is called */
    WaitForSingleObject( notification_events[0], INFINITE );
Gildas Bazin's avatar
 
Gildas Bazin committed
937

Gildas Bazin's avatar
 
Gildas Bazin committed
938 939 940
    if( !p_notif->b_die )
    {
        mwait( p_notif->start_date - AOUT_PTS_TOLERANCE / 2 );
941

Gildas Bazin's avatar
 
Gildas Bazin committed
942 943 944 945 946
        /* start playing the buffer */
        dsresult = IDirectSoundBuffer_Play( p_aout->output.p_sys->p_dsbuffer,
                                        0,                         /* Unused */
                                        0,                         /* Unused */
                                        DSBPLAY_LOOPING );          /* Flags */
Gildas Bazin's avatar
 
Gildas Bazin committed
947
        if( dsresult == DSERR_BUFFERLOST )
948
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
949
            IDirectSoundBuffer_Restore( p_aout->output.p_sys->p_dsbuffer );
Gildas Bazin's avatar
 
Gildas Bazin committed
950 951 952 953 954
            dsresult = IDirectSoundBuffer_Play(
                                            p_aout->output.p_sys->p_dsbuffer,
                                            0,                     /* Unused */
                                            0,                     /* Unused */
                                            DSBPLAY_LOOPING );      /* Flags */
955
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
956
        if( dsresult != DS_OK )
957
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
958
            msg_Err( p_aout, "cannot start playing buffer" );
959
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975
    }

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

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

        if( p_notif->b_die )
            break;

        mtime = mdate();
976

Gildas Bazin's avatar
 
Gildas Bazin committed
977
        /* We take into account the current latency */
Gildas Bazin's avatar
 
Gildas Bazin committed
978 979 980
        if SUCCEEDED( IDirectSoundBuffer_GetCurrentPosition(
                        p_aout->output.p_sys->p_dsbuffer,
                        &l_latency, NULL ) )
Gildas Bazin's avatar
 
Gildas Bazin committed
981
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
982 983
            if( l_latency > (i_which_frame * FRAME_SIZE)
                  && l_latency < ((i_which_frame+1) * FRAME_SIZE) )
Gildas Bazin's avatar
 
Gildas Bazin committed
984
            {
Gildas Bazin's avatar
 
Gildas Bazin committed
985 986 987
                l_latency = - ( l_latency /
                                p_aout->output.output.i_bytes_per_frame %
                                FRAME_SIZE );
Gildas Bazin's avatar
 
Gildas Bazin committed
988 989 990
            }
            else
            {
Gildas Bazin's avatar
 
Gildas Bazin committed
991
                l_latency = FRAME_SIZE - ( l_latency /
Gildas Bazin's avatar
 
Gildas Bazin committed
992 993 994 995 996 997
                                      p_aout->output.output.i_bytes_per_frame %
                                      FRAME_SIZE );
            }
        }
        else
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
998
            l_latency = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
999 1000
        }

Gildas Bazin's avatar
 
Gildas Bazin committed
1001 1002 1003 1004
        /* Mark last frame as empty */
        i_last_frame = (i_which_frame + FRAMES_NUM -1) % FRAMES_NUM;
        i_next_frame = (i_which_frame + 1) % FRAMES_NUM;
        p_notif->i_frame_status[i_last_frame] = FRAME_EMPTY;
1005

Gildas Bazin's avatar
 
Gildas Bazin committed
1006 1007
        /* Try to fill in as many frame buffers as possible */
        for( i = i_next_frame; (i % FRAMES_NUM) != i_which_frame; i++ )
1008 1009
        {

Gildas Bazin's avatar
 
Gildas Bazin committed
1010 1011 1012 1013 1014 1015
            /* Check if frame buf is already filled */
            if( p_notif->i_frame_status[i % FRAMES_NUM] == FRAME_QUEUED )
                continue;

            p_buffer = aout_OutputNextBuffer( p_aout,
                mtime + 1000000 / p_aout->output.output.i_rate *
Gildas Bazin's avatar
 
Gildas Bazin committed
1016
                ((i - i_next_frame + 1) * FRAME_SIZE + l_latency), b_sleek );
Gildas Bazin's avatar
 
Gildas Bazin committed
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026

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

Gildas Bazin's avatar
 
Gildas Bazin committed
1027
            if( FillBuffer( p_aout, (i%FRAMES_NUM), p_buffer )
Gildas Bazin's avatar
 
Gildas Bazin committed
1028 1029 1030 1031 1032 1033
                != VLC_SUCCESS )
                break;

            /* Mark the frame buffer as QUEUED */
            p_notif->i_frame_status[i%FRAMES_NUM] = FRAME_QUEUED;
        }
1034 1035 1036

    }

Gildas Bazin's avatar
 
Gildas Bazin committed
1037 1038 1039
    /* make sure the buffer isn't playing */
    IDirectSoundBuffer_Stop( p_aout->output.p_sys->p_dsbuffer );

1040
    /* free the events */
Gildas Bazin's avatar
 
Gildas Bazin committed
1041 1042
    for( i = 0; i < FRAMES_NUM; i++ )
        CloseHandle( notification_events[i] );
1043 1044 1045

    msg_Dbg( p_notif, "DirectSoundThread exiting" );
}
Gildas Bazin's avatar
 
Gildas Bazin committed
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106

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

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

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

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

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

            pi_chan_table[j] = l;

            j++;
        }
    }

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

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

#undef pi_chan_table
#undef waveformat
}

/*****************************************************************************
 * InterleaveFloat32/S16: change the channel order to the Microsoft one.
 *****************************************************************************/
Gildas Bazin's avatar
 
Gildas Bazin committed
1107 1108
static void InterleaveFloat32( float *p_buf, float *p_buf_out,
                               int *pi_chan_table, int i_nb_channels )
Gildas Bazin's avatar
 
Gildas Bazin committed
1109 1110 1111 1112 1113 1114 1115
{
    int i, j;

    for( i = 0; i < FRAME_SIZE; i++ )
    {
        for( j = 0; j < i_nb_channels; j++ )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1116 1117
            p_buf_out[i*i_nb_channels + pi_chan_table[j]] =
                p_buf[i*i_nb_channels + j];
Gildas Bazin's avatar
 
Gildas Bazin committed
1118 1119 1120 1121
        }
    }
}

Gildas Bazin's avatar
 
Gildas Bazin committed
1122 1123
static void InterleaveS16( int16_t *p_buf, int16_t *p_buf_out,
                           int *pi_chan_table, int i_nb_channels )
Gildas Bazin's avatar
 
Gildas Bazin committed
1124 1125 1126 1127 1128 1129 1130
{
    int i, j;

    for( i = 0; i < FRAME_SIZE; i++ )
    {
        for( j = 0; j < i_nb_channels; j++ )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1131 1132
            p_buf_out[ i*i_nb_channels + pi_chan_table[j]] =
                p_buf[i*i_nb_channels + j];
Gildas Bazin's avatar
 
Gildas Bazin committed
1133 1134 1135
        }
    }
}