]> git.sesse.net Git - vlc/blobdiff - modules/audio_output/waveout.c
FSF address change.
[vlc] / modules / audio_output / waveout.c
index 6bda4af38da4cc450f38b44925ae2090bb6b4537..fbee1c0ab161c6a4326f17ac621d617cbc86ad74 100644 (file)
@@ -1,16 +1,16 @@
 /*****************************************************************************
  * waveout.c : Windows waveOut plugin for vlc
  *****************************************************************************
- * Copyright (C) 2001 VideoLAN
- * $Id: waveout.c,v 1.28 2004/01/25 17:58:29 murray Exp $
+ * Copyright (C) 2001 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Gildas Bazin <gbazin@videolan.org>
  *
- * 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
@@ -18,7 +18,7 @@
  *
  * 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  *****************************************************************************/
 
 /*****************************************************************************
@@ -34,7 +34,7 @@
 #include <windows.h>
 #include <mmsystem.h>
 
-#define FRAME_SIZE 1024              /* The size is in samples, not in bytes */
+#define FRAME_SIZE 4096              /* The size is in samples, not in bytes */
 #define FRAMES_NUM 8
 
 /*****************************************************************************
  *****************************************************************************/
 #ifdef UNDER_CE
 #   define DWORD_PTR DWORD
+#   ifdef waveOutGetDevCaps
+#       undef waveOutGetDevCaps
+        MMRESULT WINAPI waveOutGetDevCaps(UINT, LPWAVEOUTCAPS, UINT);
+#   endif
 #endif
 
 #ifndef WAVE_FORMAT_IEEE_FLOAT
@@ -92,10 +96,9 @@ typedef struct {
 } WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
 #endif
 
-#include <initguid.h>
-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 );
+static const GUID __KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = {WAVE_FORMAT_IEEE_FLOAT, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
+static const GUID __KSDATAFORMAT_SUBTYPE_PCM = {WAVE_FORMAT_PCM, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
+static const GUID __KSDATAFORMAT_SUBTYPE_DOLBY_AC3_SPDIF = {WAVE_FORMAT_DOLBY_AC3_SPDIF, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
 
 /*****************************************************************************
  * Local prototypes
@@ -118,22 +121,31 @@ typedef struct notification_thread_t
 static void Probe        ( aout_instance_t * );
 static int OpenWaveOut   ( aout_instance_t *, int, int, int, int, vlc_bool_t );
 static int OpenWaveOutPCM( aout_instance_t *, int*, int, int, int, vlc_bool_t );
-static void CheckReordering( aout_instance_t *, int );
 static int PlayWaveOut   ( aout_instance_t *, HWAVEOUT, WAVEHDR *,
                            aout_buffer_t * );
 
 static void CALLBACK WaveOutCallback ( HWAVEOUT, UINT, DWORD, DWORD, DWORD );
 static void WaveOutThread( notification_thread_t * );
 
-static void InterleaveFloat32( float *, int *, int );
-static void InterleaveS16( int16_t *, int *, int );
+static int VolumeInfos( aout_instance_t *, audio_volume_t * );
+static int VolumeGet( aout_instance_t *, audio_volume_t * );
+static int VolumeSet( aout_instance_t *, audio_volume_t );
 
 /*****************************************************************************
  * Module descriptor
  *****************************************************************************/
+#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)." )
+
 vlc_module_begin();
+    set_shortname( "WaveOut" );
     set_description( _("Win32 waveOut extension output") );
     set_capability( "audio output", 50 );
+    set_category( CAT_AUDIO );
+    set_subcategory( SUBCAT_AUDIO_AOUT );
+    add_bool( "waveout-float32", 1, 0, FLOAT_TEXT, FLOAT_LONGTEXT, VLC_TRUE );
     set_callbacks( Open, Close );
 vlc_module_end();
 
@@ -159,21 +171,24 @@ struct aout_sys_t
     byte_t *p_silence_buffer;               /* buffer we use to play silence */
 
     vlc_bool_t b_chan_reorder;              /* do we need channel reordering */
-    int *pi_chan_table;
+    int pi_chan_table[AOUT_CHAN_MAX];
 };
 
-static const uint32_t pi_channels_in[] =
+static const uint32_t pi_channels_src[] =
     { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
+      AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT,
       AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
-      AOUT_CHAN_CENTER, AOUT_CHAN_LFE };
+      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 };
 static const uint32_t pi_channels_out[] =
     { SPEAKER_FRONT_LEFT, SPEAKER_FRONT_RIGHT,
+      SPEAKER_FRONT_CENTER, SPEAKER_LOW_FREQUENCY,
       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 };
+      SPEAKER_SIDE_LEFT, SPEAKER_SIDE_RIGHT, 0 };
 
 /*****************************************************************************
  * Open: open the audio device
@@ -196,7 +211,6 @@ static int Open( vlc_object_t *p_this )
     }
 
     p_aout->output.pf_play = Play;
-    p_aout->output.p_sys->pi_chan_table = NULL;
     p_aout->b_die = VLC_FALSE;
 
     if( var_Type( p_aout, "audio-device" ) == 0 )
@@ -211,6 +225,8 @@ static int Open( vlc_object_t *p_this )
         return VLC_EGENERIC;
     }
 
+    var_Create( p_aout, "waveout-float32", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
+
     /* Open the device */
     if( val.i_int == AOUT_VAR_SPDIF )
     {
@@ -238,6 +254,8 @@ static int Open( vlc_object_t *p_this )
     }
     else
     {
+        WAVEOUTCAPS wocaps;
+
         if( val.i_int == AOUT_VAR_5_1 )
         {
             p_aout->output.output.i_physical_channels
@@ -279,6 +297,21 @@ static int Open( vlc_object_t *p_this )
             p_aout->output.output.i_bytes_per_frame;
 
         aout_VolumeSoftInit( p_aout );
+
+        /* Check for hardware volume support */
+        if( waveOutGetDevCaps( (UINT_PTR)p_aout->output.p_sys->h_waveout,
+                               &wocaps, sizeof(wocaps) ) == MMSYSERR_NOERROR &&
+            wocaps.dwSupport & WAVECAPS_VOLUME )
+        {
+            DWORD i_dummy;
+            if( waveOutGetVolume( p_aout->output.p_sys->h_waveout, &i_dummy )
+                == MMSYSERR_NOERROR )
+            {
+                p_aout->output.pf_volume_infos = VolumeInfos;
+                p_aout->output.pf_volume_get = VolumeGet;
+                p_aout->output.pf_volume_set = VolumeSet;
+            }
+        }
     }
 
 
@@ -317,6 +350,7 @@ static int Open( vlc_object_t *p_this )
     for( i = 0; i < FRAMES_NUM; i++ )
     {
         p_aout->output.p_sys->waveheader[i].dwFlags = WHDR_DONE;
+        p_aout->output.p_sys->waveheader[i].dwUser = 0;
     }
     PlayWaveOut( p_aout, p_aout->output.p_sys->h_waveout,
                  &p_aout->output.p_sys->waveheader[0], NULL );
@@ -450,45 +484,27 @@ static void Play( aout_instance_t *_p_aout )
 static void Close( vlc_object_t *p_this )
 {
     aout_instance_t *p_aout = (aout_instance_t *)p_this;
+    aout_sys_t *p_sys = p_aout->output.p_sys;
 
     /* Before calling waveOutClose we must reset the device */
     p_aout->b_die = VLC_TRUE;
 
-    /* wake up the audio thread */
-    SetEvent( p_aout->output.p_sys->event );
-    vlc_thread_join( p_aout->output.p_sys->p_notif );
-    CloseHandle( p_aout->output.p_sys->event );
-
-    /* Wait for the waveout buffers to be freed */
-    while( VLC_TRUE )
-    {
-        int i;
-        vlc_bool_t b_not_done = VLC_FALSE;
-
-        for( i = 0; i < FRAMES_NUM; i++ )
-        {
-           if( !(p_aout->output.p_sys->waveheader[i].dwFlags & WHDR_DONE) )
-               b_not_done = VLC_TRUE;
-        }
-
-        if( !b_not_done )
-            break;
+    waveOutReset( p_sys->h_waveout );
 
-        msleep( 1000 );
-    }
-
-    waveOutReset( p_aout->output.p_sys->h_waveout );
+    /* wake up the audio thread */
+    SetEvent( p_sys->event );
+    vlc_thread_join( p_sys->p_notif );
+    vlc_object_destroy( p_sys->p_notif );
+    CloseHandle( p_sys->event );
 
     /* Close the device */
-    if( waveOutClose( p_aout->output.p_sys->h_waveout ) != MMSYSERR_NOERROR )
+    if( waveOutClose( p_sys->h_waveout ) != MMSYSERR_NOERROR )
     {
         msg_Err( p_aout, "waveOutClose failed" );
     }
 
-    free( p_aout->output.p_sys->p_silence_buffer );
-    if( p_aout->output.p_sys->pi_chan_table )
-        free( p_aout->output.p_sys->pi_chan_table );
-    free( p_aout->output.p_sys );
+    free( p_sys->p_silence_buffer );
+    free( p_sys );
 }
 
 /*****************************************************************************
@@ -506,10 +522,10 @@ static int OpenWaveOut( aout_instance_t *p_aout, int i_format,
 #define waveformat p_aout->output.p_sys->waveformat
 
     waveformat.dwChannelMask = 0;
-    for( i = 0; i < sizeof(pi_channels_in)/sizeof(uint32_t); i++ )
+    for( i = 0; i < sizeof(pi_channels_src)/sizeof(uint32_t); i++ )
     {
-        if( i_channels & pi_channels_in[i] )
-            waveformat.dwChannelMask |= pi_channels_out[i];
+        if( i_channels & pi_channels_src[i] )
+            waveformat.dwChannelMask |= pi_channels_in[i];
     }
 
     switch( i_format )
@@ -582,7 +598,15 @@ static int OpenWaveOut( aout_instance_t *p_aout, int i_format,
         return VLC_EGENERIC;
     }
 
-    CheckReordering( p_aout, i_nb_channels );
+    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" );
+    }
 
     return VLC_SUCCESS;
 
@@ -597,8 +621,12 @@ static int OpenWaveOutPCM( aout_instance_t *p_aout, int *i_format,
                            int i_channels, int i_nb_channels, int i_rate,
                            vlc_bool_t b_probe )
 {
-    if( OpenWaveOut( p_aout, VLC_FOURCC('f','l','3','2'),
-                     i_channels, i_nb_channels, i_rate, b_probe )
+    vlc_value_t val;
+
+    var_Get( p_aout, "waveout-float32", &val );
+
+    if( !val.b_bool || OpenWaveOut( p_aout, VLC_FOURCC('f','l','3','2'),
+                                   i_channels, i_nb_channels, i_rate, b_probe )
         != VLC_SUCCESS )
     {
         if ( OpenWaveOut( p_aout, VLC_FOURCC('s','1','6','l'),
@@ -620,63 +648,6 @@ static int OpenWaveOutPCM( aout_instance_t *p_aout, int *i_format,
     }
 }
 
-/*****************************************************************************
- * 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 waveformat p_aout->output.p_sys->waveformat
-#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( waveformat.dwChannelMask & pi_channels_out[i] )
-        {
-            for( k = 0, l = 0;
-                 pi_channels_out[i] != pi_channels_ordered[k]; k++ )
-            {
-                if( waveformat.dwChannelMask & 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
-}
-
 /*****************************************************************************
  * PlayWaveOut: play a buffer through the WaveOut device
  *****************************************************************************/
@@ -692,7 +663,7 @@ static int PlayWaveOut( aout_instance_t *p_aout, HWAVEOUT h_waveout,
         /* Use silence buffer instead */
         p_waveheader->lpData = p_aout->output.p_sys->p_silence_buffer;
 
-    p_waveheader->dwUser = (DWORD_PTR)p_buffer;
+    p_waveheader->dwUser = p_buffer ? (DWORD_PTR)p_buffer : (DWORD_PTR)1;
     p_waveheader->dwBufferLength = p_aout->output.p_sys->i_buffer_size;
     p_waveheader->dwFlags = 0;
 
@@ -722,16 +693,10 @@ static void CALLBACK WaveOutCallback( HWAVEOUT h_waveout, UINT uMsg,
                                       DWORD dwParam1, DWORD dwParam2 )
 {
     aout_instance_t *p_aout = (aout_instance_t *)_p_aout;
-    WAVEHDR *p_waveheader = (WAVEHDR *)dwParam1;
     int i, i_queued_frames = 0;
 
     if( uMsg != WOM_DONE ) return;
 
-    /* Unprepare and free the buffer which has just been played */
-    waveOutUnprepareHeader( h_waveout, p_waveheader, sizeof(WAVEHDR) );
-    if( p_waveheader->dwUser )
-        aout_BufferFree( (aout_buffer_t *)p_waveheader->dwUser );
-
     if( p_aout->b_die ) return;
 
     /* Find out the current latency */
@@ -750,46 +715,7 @@ static void CALLBACK WaveOutCallback( HWAVEOUT h_waveout, UINT uMsg,
 }
 
 /*****************************************************************************
- * InterleaveFloat32/S16: change the channel order to the Microsoft one.
- *****************************************************************************/
-static void InterleaveFloat32( float *p_buf, int *pi_chan_table,
-                               int i_nb_channels )
-{
-    int i, j;
-    float p_tmp[10];
-
-    for( i = 0; i < FRAME_SIZE; i++ )
-    {
-        for( j = 0; j < i_nb_channels; j++ )
-        {
-            p_tmp[pi_chan_table[j]] = p_buf[i*i_nb_channels + j];
-        }
-
-        memcpy( &p_buf[i*i_nb_channels], p_tmp,
-                i_nb_channels * sizeof(float) );
-    }
-}
-
-static void InterleaveS16( int16_t *p_buf, int *pi_chan_table,
-                           int i_nb_channels )
-{
-    int i, j;
-    int16_t p_tmp[10];
-
-    for( i = 0; i < FRAME_SIZE; i++ )
-    {
-        for( j = 0; j < i_nb_channels; j++ )
-        {
-            p_tmp[pi_chan_table[j]] = p_buf[i*i_nb_channels + j];
-        }
-
-        memcpy( &p_buf[i*i_nb_channels], p_tmp,
-                i_nb_channels * sizeof(int16_t) );
-    }
-}
-
-/*****************************************************************************
- * WaveOutThread: this thread will capture play notification events. 
+ * WaveOutThread: this thread will capture play notification events.
  *****************************************************************************
  * We use this thread to feed new audio samples to the sound card because
  * we are not authorized to use waveOutWrite() directly in the waveout
@@ -798,34 +724,50 @@ static void InterleaveS16( int16_t *p_buf, int *pi_chan_table,
 static void WaveOutThread( notification_thread_t *p_notif )
 {
     aout_instance_t *p_aout = p_notif->p_aout;
+    aout_sys_t *p_sys = p_aout->output.p_sys;
     aout_buffer_t *p_buffer = NULL;
-    vlc_bool_t b_sleek;
+    WAVEHDR *p_waveheader = p_sys->waveheader;
     int i, i_queued_frames;
+    vlc_bool_t b_sleek;
 
     /* We don't want any resampling when using S/PDIF */
     b_sleek = p_aout->output.output.i_format == VLC_FOURCC('s','p','d','i');
 
     while( 1 )
     {
-        WaitForSingleObject( p_aout->output.p_sys->event, INFINITE );
-        if( p_aout->b_die ) return;
+        WaitForSingleObject( p_sys->event, INFINITE );
 
-        /* Find out the current latency */
+        /* Cleanup and find out the current latency */
         i_queued_frames = 0;
         for( i = 0; i < FRAMES_NUM; i++ )
         {
+            if( (p_waveheader[i].dwFlags & WHDR_DONE) &&
+                p_waveheader[i].dwUser )
+            {
+                /* Unprepare and free the buffers which has just been played */
+                waveOutUnprepareHeader( p_sys->h_waveout, &p_waveheader[i],
+                                        sizeof(WAVEHDR) );
+
+                if( p_waveheader[i].dwUser != 1 )
+                    aout_BufferFree( (aout_buffer_t *)p_waveheader[i].dwUser );
+
+                p_waveheader[i].dwUser = 0;
+            }
+
             /* Check if frame buf is available */
-            if( !(p_aout->output.p_sys->waveheader[i].dwFlags & WHDR_DONE) )
+            if( !(p_waveheader[i].dwFlags & WHDR_DONE) )
             {
                 i_queued_frames++;
             }
         }
 
+        if( p_aout->b_die ) return;
+
         /* Try to fill in as many frame buffers as possible */
         for( i = 0; i < FRAMES_NUM; i++ )
         {
             /* Check if frame buf is available */
-            if( p_aout->output.p_sys->waveheader[i].dwFlags & WHDR_DONE )
+            if( p_waveheader[i].dwFlags & WHDR_DONE )
             {
                 /* Take into account the latency */
                 p_buffer = aout_OutputNextBuffer( p_aout,
@@ -839,25 +781,58 @@ static void WaveOutThread( notification_thread_t *p_notif )
                     break;
                 }
 
-                /* Do the channel reordering here */
-                if( p_buffer && p_aout->output.p_sys->b_chan_reorder )
+                /* Do the channel reordering */
+                if( p_buffer && p_sys->b_chan_reorder )
                 {
-                    if( p_aout->output.output.i_format ==
-                            VLC_FOURCC('s','1','6','l') )
-                        InterleaveS16( (int16_t *)p_buffer->p_buffer,
-                            p_aout->output.p_sys->pi_chan_table,
-                            aout_FormatNbChannels( &p_aout->output.output ) );
-                    else
-                        InterleaveFloat32( (float *)p_buffer->p_buffer,
-                            p_aout->output.p_sys->pi_chan_table,
-                            aout_FormatNbChannels( &p_aout->output.output ) );
+                    aout_ChannelReorder( p_buffer->p_buffer,
+                        p_buffer->i_nb_bytes,
+                        p_sys->waveformat.Format.nChannels,
+                        p_sys->pi_chan_table,
+                        p_sys->waveformat.Format.wBitsPerSample );
                 }
 
-                PlayWaveOut( p_aout, p_aout->output.p_sys->h_waveout,
-                             &p_aout->output.p_sys->waveheader[i] , p_buffer );
+                PlayWaveOut( p_aout, p_sys->h_waveout,
+                             &p_waveheader[i], p_buffer );
 
                 i_queued_frames++;
             }
         }
     }
 }
+
+static int VolumeInfos( aout_instance_t * p_aout, audio_volume_t * pi_soft )
+{
+    *pi_soft = AOUT_VOLUME_MAX / 2;
+    return 0;
+}
+
+static int VolumeGet( aout_instance_t * p_aout, audio_volume_t * pi_volume )
+{
+    DWORD i_waveout_vol;
+
+#ifdef UNDER_CE
+    waveOutGetVolume( 0, &i_waveout_vol );
+#else
+    waveOutGetVolume( p_aout->output.p_sys->h_waveout, &i_waveout_vol );
+#endif
+
+    i_waveout_vol &= 0xFFFF;
+    *pi_volume = p_aout->output.i_volume =
+        (i_waveout_vol * AOUT_VOLUME_MAX + 0xFFFF /*rounding*/) / 2 / 0xFFFF;
+    return 0;
+}
+
+static int VolumeSet( aout_instance_t * p_aout, audio_volume_t i_volume )
+{
+    unsigned long i_waveout_vol = i_volume * 0xFFFF * 2 / AOUT_VOLUME_MAX;
+    i_waveout_vol |= (i_waveout_vol << 16);
+
+#ifdef UNDER_CE
+    waveOutSetVolume( 0, i_waveout_vol );
+#else
+    waveOutSetVolume( p_aout->output.p_sys->h_waveout, i_waveout_vol );
+#endif
+
+    p_aout->output.i_volume = i_volume;
+    return 0;
+}