]> git.sesse.net Git - vlc/blobdiff - modules/audio_output/alsa.c
Replaced AOUT_FMT_*_NE/IE by by VLC_CODEC equivalents.
[vlc] / modules / audio_output / alsa.c
index 4f48fcbb6a83bd3b5e7c79904085a17f5be2a7cf..fb2f45c1aae6e7555cd09d2c27a7e54b8198d03d 100644 (file)
 /*****************************************************************************
  * Preamble
  *****************************************************************************/
-#include <vlc/vlc.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
 
-#include <stdio.h>
 #include <errno.h>                                                 /* ENOMEM */
-#include <string.h>                                            /* strerror() */
-#include <stdlib.h>                            /* calloc(), malloc(), free() */
-#include <vlc/aout.h>
-#include <vlc_interaction.h>
+#include <vlc_dialog.h>
 
-#include "aout_internal.h"
+#include <vlc_aout.h>
 
 /* ALSA part
    Note: we use the new API which is available since 0.9.0beta10a. */
@@ -44,6 +45,8 @@
 #define ALSA_PCM_NEW_SW_PARAMS_API
 #include <alsa/asoundlib.h>
 
+/*#define ALSA_DEBUG*/
+
 /*****************************************************************************
  * aout_sys_t: ALSA audio output method descriptor
  *****************************************************************************
@@ -87,32 +90,33 @@ struct aout_sys_t
 /*****************************************************************************
  * Local prototypes
  *****************************************************************************/
-static int  Open         ( vlc_object_t * );
-static void Close        ( vlc_object_t * );
-static void Play         ( aout_instance_t * );
-static int  ALSAThread   ( aout_instance_t * );
-static void ALSAFill     ( aout_instance_t * );
+static int   Open         ( vlc_object_t * );
+static void  Close        ( vlc_object_t * );
+static void  Play         ( aout_instance_t * );
+static void* ALSAThread   ( vlc_object_t * );
+static void  ALSAFill     ( aout_instance_t * );
 static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
                                 vlc_value_t newval, vlc_value_t oldval, void *p_unused );
 
 /*****************************************************************************
  * Module descriptor
  *****************************************************************************/
-static char *ppsz_devices[] = { "default" };
-static char *ppsz_devices_text[] = { N_("Default") };
-vlc_module_begin();
-    set_shortname( "ALSA" );
-    set_description( _("ALSA audio output") );
-    set_category( CAT_AUDIO );
-    set_subcategory( SUBCAT_AUDIO_AOUT );
-    add_string( "alsadev", DEFAULT_ALSA_DEVICE, aout_FindAndRestart,
-                N_("ALSA Device Name"), NULL, VLC_FALSE );
-        change_string_list( ppsz_devices, ppsz_devices_text, FindDevicesCallback );
-        change_action_add( FindDevicesCallback, N_("Refresh list") );
-
-    set_capability( "audio output", 150 );
-    set_callbacks( Open, Close );
-vlc_module_end();
+static const char *const ppsz_devices[] = { "default" };
+static const char *const ppsz_devices_text[] = { N_("Default") };
+vlc_module_begin ()
+    set_shortname( "ALSA" )
+    set_description( N_("ALSA audio output") )
+    set_category( CAT_AUDIO )
+    set_subcategory( SUBCAT_AUDIO_AOUT )
+    add_string( "alsa-audio-device", DEFAULT_ALSA_DEVICE, aout_FindAndRestart,
+                N_("ALSA Device Name"), NULL, false )
+        add_deprecated_alias( "alsadev" )   /* deprecated since 0.9.3 */
+        change_string_list( ppsz_devices, ppsz_devices_text, FindDevicesCallback )
+        change_action_add( FindDevicesCallback, N_("Refresh list") )
+
+    set_capability( "audio output", 150 )
+    set_callbacks( Open, Close )
+vlc_module_end ()
 
 /*****************************************************************************
  * Probe: probe the audio device for available formats and channels
@@ -183,20 +187,20 @@ static void Probe( aout_instance_t * p_aout,
                 {
                 case 1:
                     val.i_int = AOUT_VAR_MONO;
-                    text.psz_string = N_("Mono");
+                    text.psz_string = _("Mono");
                     var_Change( p_aout, "audio-device",
                                 VLC_VAR_ADDCHOICE, &val, &text );
                     break;
                 case 2:
                     val.i_int = AOUT_VAR_STEREO;
-                    text.psz_string = N_("Stereo");
+                    text.psz_string = _("Stereo");
                     var_Change( p_aout, "audio-device",
                                 VLC_VAR_ADDCHOICE, &val, &text );
                     var_Set( p_aout, "audio-device", val );
                     break;
                 case 4:
                     val.i_int = AOUT_VAR_2F2R;
-                    text.psz_string = N_("2 Front 2 Rear");
+                    text.psz_string = _("2 Front 2 Rear");
                     var_Change( p_aout, "audio-device",
                                 VLC_VAR_ADDCHOICE, &val, &text );
                     break;
@@ -213,14 +217,14 @@ static void Probe( aout_instance_t * p_aout,
         }
 
         /* Special case for mono on stereo only boards */
-        i_channels = aout_FormatNbChannels( &p_aout->output.output );        
+        i_channels = aout_FormatNbChannels( &p_aout->output.output );
         var_Change( p_aout, "audio-device", VLC_VAR_CHOICESCOUNT, &val, NULL );
         if( val.i_int <= 0 && i_channels == 1 )
         {
             if ( !snd_pcm_hw_params_test_channels( p_sys->p_snd_pcm, p_hw, 2 ))
             {
                 val.i_int = AOUT_VAR_STEREO;
-                text.psz_string = N_("Stereo");
+                text.psz_string = (char*)N_("Stereo");
                 var_Change( p_aout, "audio-device",
                             VLC_VAR_ADDCHOICE, &val, &text );
                 var_Set( p_aout, "audio-device", val );
@@ -244,7 +248,7 @@ static void Probe( aout_instance_t * p_aout,
                                      SND_PCM_NONBLOCK ) ) )
         {
             val.i_int = AOUT_VAR_SPDIF;
-            text.psz_string = N_("A/52 over S/PDIF");
+            text.psz_string = (char*)N_("A/52 over S/PDIF");
             var_Change( p_aout, "audio-device",
                         VLC_VAR_ADDCHOICE, &val, &text );
             if( config_GetInt( p_aout, "spdif" ) )
@@ -270,8 +274,7 @@ static void Probe( aout_instance_t * p_aout,
 
     /* Add final settings to the variable */
     var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
-    val.b_bool = VLC_TRUE;
-    var_Set( p_aout, "intf-change", val );
+    var_SetBool( p_aout, "intf-change", true );
 }
 
 /*****************************************************************************
@@ -305,25 +308,22 @@ static int Open( vlc_object_t *p_this )
 
     int i_snd_rc = -1;
     unsigned int i_old_rate;
-    vlc_bool_t b_retry = VLC_TRUE;
+    bool b_retry = true;
 
     /* Allocate structures */
     p_aout->output.p_sys = p_sys = malloc( sizeof( aout_sys_t ) );
     if( p_sys == NULL )
-    {
-        msg_Err( p_aout, "out of memory" );
         return VLC_ENOMEM;
-    }
-    p_sys->b_playing = VLC_FALSE;
+    p_sys->b_playing = false;
     p_sys->start_date = 0;
-    vlc_cond_init( p_aout, &p_sys->wait );
-    vlc_mutex_init( p_aout, &p_sys->lock );
+    vlc_cond_init( &p_sys->wait );
+    vlc_mutex_init( &p_sys->lock );
 
     /* Get device name */
-    if( (psz_device = config_GetPsz( p_aout, "alsadev" )) == NULL )
+    if( (psz_device = config_GetPsz( p_aout, "alsa-audio-device" )) == NULL )
     {
         msg_Err( p_aout, "no audio device given (maybe \"default\" ?)" );
-        intf_UserFatal( p_aout, VLC_FALSE, _("No Audio Device"), 
+        dialog_Fatal( p_aout, _("No Audio Device"),
                         _("No audio device name was given. You might want to " \
                           "enter \"default\".") );
         free( p_sys );
@@ -358,14 +358,14 @@ static int Open( vlc_object_t *p_this )
 
     /* Choose the linear PCM format (read the comment above about FPU
        and float32) */
-    if( p_aout->p_libvlc_global->i_cpu & CPU_CAPABILITY_FPU )
+    if( vlc_CPU() & CPU_CAPABILITY_FPU )
     {
-        i_vlc_pcm_format = VLC_FOURCC('f','l','3','2');
+        i_vlc_pcm_format = VLC_CODEC_FL32;
         i_snd_pcm_format = SND_PCM_FORMAT_FLOAT;
     }
     else
     {
-        i_vlc_pcm_format = AOUT_FMT_S16_NE;
+        i_vlc_pcm_format = VLC_CODEC_S16N;
         i_snd_pcm_format = SND_PCM_FORMAT_S16;
     }
 
@@ -431,7 +431,7 @@ static int Open( vlc_object_t *p_this )
         {
             msg_Err( p_aout, "cannot open ALSA device `%s' (%s)",
                              psz_iec_device, snd_strerror( i_snd_rc ) );
-            intf_UserFatal( p_aout, VLC_FALSE, _("Audio output failed"), 
+            dialog_Fatal( p_aout, _("Audio output failed"),
                             _("VLC could not open the ALSA device \"%s\" (%s)."),
                             psz_iec_device, snd_strerror( i_snd_rc ) );
             free( p_sys );
@@ -442,7 +442,7 @@ static int Open( vlc_object_t *p_this )
         i_snd_pcm_format = SND_PCM_FORMAT_S16;
         i_channels = 2;
 
-        i_vlc_pcm_format = VLC_FOURCC('s','p','d','i');
+        i_vlc_pcm_format = VLC_CODEC_SPDIFL;
         p_aout->output.i_nb_samples = i_period_size = ALSA_SPDIF_PERIOD_SIZE;
         p_aout->output.output.i_bytes_per_frame = AOUT_SPDIF_SIZE;
         p_aout->output.output.i_frame_length = A52_FRAME_NB;
@@ -455,7 +455,7 @@ static int Open( vlc_object_t *p_this )
 
         msg_Dbg( p_aout, "opening ALSA device `%s'", psz_device );
 
-        /* Since it seems snd_pcm_close hasen't really released the device at
+        /* Since it seems snd_pcm_close hasn't really released the device at
           the time it returns, probe if the device is available in loop for 1s.
           We cannot use blocking mode since the we would wait indefinitely when
           switching from a dmx device to surround51. */
@@ -470,7 +470,7 @@ static int Open( vlc_object_t *p_this )
                 {
                     msg_Err( p_aout, "audio device: %s is already in use",
                               psz_device );
-                    intf_UserFatal( p_aout, VLC_FALSE, _("Audio output failed"), 
+                    dialog_Fatal( p_aout, _("Audio output failed"),
                                     _("The audio device \"%s\" is already in use."),
                                     psz_device );
                 }
@@ -482,7 +482,7 @@ static int Open( vlc_object_t *p_this )
         {
             msg_Err( p_aout, "cannot open ALSA device `%s' (%s)",
                              psz_device, snd_strerror( i_snd_rc ) );
-            intf_UserFatal( p_aout, VLC_FALSE, _("Audio output failed"), 
+            dialog_Fatal( p_aout, _("Audio output failed"),
                             _("VLC could not open the ALSA device \"%s\" (%s)."),
                             psz_device, snd_strerror( i_snd_rc ) );
             free( p_sys );
@@ -513,7 +513,7 @@ static int Open( vlc_object_t *p_this )
        if snd_pcm_hw_params fails in fl32 */
     while ( b_retry )
     {
-        b_retry = VLC_FALSE;
+        b_retry = false;
 
         /* Get Initial hardware parameters */
         if ( ( i_snd_rc = snd_pcm_hw_params_any( p_sys->p_snd_pcm, p_hw ) ) < 0 )
@@ -540,14 +540,14 @@ static int Open( vlc_object_t *p_this )
                 goto error;
             }
         }
-        if( i_vlc_pcm_format != VLC_FOURCC('s','p','d','i') )
+        if( i_vlc_pcm_format != VLC_CODEC_SPDIFL )
         switch( i_snd_pcm_format )
         {
         case SND_PCM_FORMAT_FLOAT:
-            i_vlc_pcm_format = VLC_FOURCC('f','l','3','2');
+            i_vlc_pcm_format = VLC_CODEC_FL32;
             break;
         case SND_PCM_FORMAT_S16:
-            i_vlc_pcm_format = AOUT_FMT_S16_NE;
+            i_vlc_pcm_format = VLC_CODEC_S16N;
             break;
         }
         p_aout->output.output.i_format = i_vlc_pcm_format;
@@ -587,44 +587,44 @@ static int Open( vlc_object_t *p_this )
                 p_aout->output.output.i_rate );
         }
 
-        /* Set buffer size. */
+        /* Set period size. */
 #ifdef HAVE_ALSA_NEW_API
-        if ( ( i_snd_rc = snd_pcm_hw_params_set_buffer_size_near( p_sys->p_snd_pcm,
-                                    p_hw, &i_buffer_size ) ) < 0 )
+        if ( ( i_snd_rc = snd_pcm_hw_params_set_period_size_near( p_sys->p_snd_pcm,
+                                    p_hw, &i_period_size, NULL ) ) < 0 )
 #else
-        if ( ( i_snd_rc = snd_pcm_hw_params_set_buffer_size_near( p_sys->p_snd_pcm,
-                                    p_hw, i_buffer_size ) ) < 0 )
+        if ( ( i_snd_rc = snd_pcm_hw_params_set_period_size_near( p_sys->p_snd_pcm,
+                                    p_hw, i_period_size, NULL ) ) < 0 )
 #endif
         {
-            msg_Err( p_aout, "unable to set buffer size (%s)",
+            msg_Err( p_aout, "unable to set period size (%s)",
                          snd_strerror( i_snd_rc ) );
             goto error;
         }
+        p_aout->output.i_nb_samples = i_period_size;
 
-        /* Set period size. */
+/* Set buffer size. */
 #ifdef HAVE_ALSA_NEW_API
-        if ( ( i_snd_rc = snd_pcm_hw_params_set_period_size_near( p_sys->p_snd_pcm,
-                                    p_hw, &i_period_size, NULL ) ) < 0 )
+        if ( ( i_snd_rc = snd_pcm_hw_params_set_buffer_size_near( p_sys->p_snd_pcm,
+                                    p_hw, &i_buffer_size ) ) < 0 )
 #else
-        if ( ( i_snd_rc = snd_pcm_hw_params_set_period_size_near( p_sys->p_snd_pcm,
-                                    p_hw, i_period_size, NULL ) ) < 0 )
+        if ( ( i_snd_rc = snd_pcm_hw_params_set_buffer_size_near( p_sys->p_snd_pcm,
+                                    p_hw, i_buffer_size ) ) < 0 )
 #endif
         {
-            msg_Err( p_aout, "unable to set period size (%s)",
+            msg_Err( p_aout, "unable to set buffer size (%s)",
                          snd_strerror( i_snd_rc ) );
             goto error;
         }
-        p_aout->output.i_nb_samples = i_period_size;
 
         /* Commit hardware parameters. */
         if ( ( i_snd_rc = snd_pcm_hw_params( p_sys->p_snd_pcm, p_hw ) ) < 0 )
         {
-            if ( b_retry == VLC_FALSE &&
+            if ( b_retry == false &&
                                 i_snd_pcm_format == SND_PCM_FORMAT_FLOAT)
             {
-                b_retry = VLC_TRUE;
+                b_retry = true;
                 i_snd_pcm_format = SND_PCM_FORMAT_S16;
-                p_aout->output.output.i_format = AOUT_FMT_S16_NE;
+                p_aout->output.output.i_format = VLC_CODEC_S16N;
                 msg_Warn( p_aout, "unable to commit hardware configuration "
                                   "with fl32 samples. Retrying with s16l (%s)",                                     snd_strerror( i_snd_rc ) );
             }
@@ -657,6 +657,15 @@ static int Open( vlc_object_t *p_this )
 
     i_snd_rc = snd_pcm_sw_params_set_avail_min( p_sys->p_snd_pcm, p_sw,
                                                 p_aout->output.i_nb_samples );
+    /* start playing when one period has been written */
+    i_snd_rc = snd_pcm_sw_params_set_start_threshold( p_sys->p_snd_pcm, p_sw,
+                                                      ALSA_DEFAULT_PERIOD_SIZE);
+    if( i_snd_rc < 0 )
+    {
+        msg_Err( p_aout, "unable to set start threshold (%s)",
+                          snd_strerror( i_snd_rc ) );
+        goto error;
+    }
 
     /* Commit software parameters. */
     if ( snd_pcm_sw_params( p_sys->p_snd_pcm, p_sw ) < 0 )
@@ -675,9 +684,9 @@ static int Open( vlc_object_t *p_this )
 
     /* Create ALSA thread and wait for its readiness. */
     if( vlc_thread_create( p_aout, "aout", ALSAThread,
-                           VLC_THREAD_PRIORITY_OUTPUT, VLC_FALSE ) )
+                           VLC_THREAD_PRIORITY_OUTPUT ) )
     {
-        msg_Err( p_aout, "cannot create ALSA thread (%s)", strerror(errno) );
+        msg_Err( p_aout, "cannot create ALSA thread (%m)" );
         goto error;
     }
 
@@ -721,14 +730,17 @@ static void Close( vlc_object_t *p_this )
     struct aout_sys_t * p_sys = p_aout->output.p_sys;
     int i_snd_rc;
 
+    /* Make sure that the thread will stop once it is waken up */
+    vlc_object_kill( p_aout );
+
     /* make sure the audio output thread is waken up */
     vlc_mutex_lock( &p_aout->output.p_sys->lock );
     vlc_cond_signal( &p_aout->output.p_sys->wait );
     vlc_mutex_unlock( &p_aout->output.p_sys->lock );
 
-    p_aout->b_die = VLC_TRUE;
+    /* */
     vlc_thread_join( p_aout );
-    p_aout->b_die = VLC_FALSE;
+    p_aout->b_die = false;
 
     i_snd_rc = snd_pcm_close( p_sys->p_snd_pcm );
 
@@ -748,27 +760,34 @@ static void Close( vlc_object_t *p_this )
 /*****************************************************************************
  * ALSAThread: asynchronous thread used to DMA the data to the device
  *****************************************************************************/
-static int ALSAThread( aout_instance_t * p_aout )
+static void* ALSAThread( vlc_object_t* p_this )
 {
-    p_aout->output.p_sys->p_status =
-        (snd_pcm_status_t *)malloc(snd_pcm_status_sizeof());
+    aout_instance_t * p_aout = (aout_instance_t*)p_this;
+    struct aout_sys_t * p_sys = p_aout->output.p_sys;
+    int canc = vlc_savecancel ();
+    p_sys->p_status = (snd_pcm_status_t *)malloc(snd_pcm_status_sizeof());
 
     /* Wait for the exact time to start playing (avoids resampling) */
-    vlc_mutex_lock( &p_aout->output.p_sys->lock );
-    if( !p_aout->output.p_sys->start_date )
-        vlc_cond_wait( &p_aout->output.p_sys->wait,
-                       &p_aout->output.p_sys->lock );
-    vlc_mutex_unlock( &p_aout->output.p_sys->lock );
+    vlc_mutex_lock( &p_sys->lock );
+    while( !p_sys->start_date && vlc_object_alive (p_aout) )
+        vlc_cond_wait( &p_sys->wait, &p_sys->lock );
+    vlc_mutex_unlock( &p_sys->lock );
 
-    mwait( p_aout->output.p_sys->start_date - AOUT_PTS_TOLERANCE / 4 );
+    if( !vlc_object_alive (p_aout) )
+       goto cleanup;
 
-    while ( !p_aout->b_die )
+    mwait( p_sys->start_date - AOUT_PTS_TOLERANCE / 4 );
+
+    while ( vlc_object_alive (p_aout) )
     {
         ALSAFill( p_aout );
     }
 
+cleanup:
+    snd_pcm_drop( p_sys->p_snd_pcm );
     free( p_aout->output.p_sys->p_status );
-    return 0;
+    vlc_restorecancel (canc);
+    return NULL;
 }
 
 /*****************************************************************************
@@ -783,103 +802,111 @@ static void ALSAFill( aout_instance_t * p_aout )
     mtime_t next_date;
 
     /* Fill in the buffer until space or audio output buffer shortage */
+
+    /* Get the status */
+    i_snd_rc = snd_pcm_status( p_sys->p_snd_pcm, p_status );
+    if( i_snd_rc < 0 )
     {
-        /* Get the status */
-        i_snd_rc = snd_pcm_status( p_sys->p_snd_pcm, p_status );
-        if( i_snd_rc < 0 )
-        {
-            msg_Err( p_aout, "unable to get the device's status (%s)",
-                             snd_strerror( i_snd_rc ) );
+        msg_Err( p_aout, "cannot get device status" );
+        goto error;
+    }
 
-            msleep( p_sys->i_period_time >> 1 );
-            return;
+    /* Handle buffer underruns and get the status again */
+    if( snd_pcm_status_get_state( p_status ) == SND_PCM_STATE_XRUN )
+    {
+        /* Prepare the device */
+        i_snd_rc = snd_pcm_prepare( p_sys->p_snd_pcm );
+
+        if( i_snd_rc )
+        {
+            msg_Err( p_aout, "cannot recover from buffer underrun" );
+            goto error;
         }
 
-        /* Handle buffer underruns and reget the status */
-        if( snd_pcm_status_get_state( p_status ) == SND_PCM_STATE_XRUN )
+        msg_Dbg( p_aout, "recovered from buffer underrun" );
+
+        /* Get the new status */
+        i_snd_rc = snd_pcm_status( p_sys->p_snd_pcm, p_status );
+        if( i_snd_rc < 0 )
         {
-            /* Prepare the device */
-            i_snd_rc = snd_pcm_prepare( p_sys->p_snd_pcm );
+            msg_Err( p_aout, "cannot get device status after recovery" );
+            goto error;
+        }
 
-            if( i_snd_rc == 0 )
-            {
-                msg_Dbg( p_aout, "recovered from buffer underrun" );
+        /* Underrun, try to recover as quickly as possible */
+        next_date = mdate();
+    }
+    else
+    {
+        /* Here the device should be in RUNNING state, p_status is valid. */
+        snd_pcm_sframes_t delay = snd_pcm_status_get_delay( p_status );
+        if( delay == 0 ) /* workaround buggy alsa drivers */
+            if( snd_pcm_delay( p_sys->p_snd_pcm, &delay ) < 0 )
+                delay = 0; /* FIXME: use a positive minimal delay */
+        int i_bytes = snd_pcm_frames_to_bytes( p_sys->p_snd_pcm, delay );
+        next_date = mdate() + ( (mtime_t)i_bytes * 1000000
+                / p_aout->output.output.i_bytes_per_frame
+                / p_aout->output.output.i_rate
+                * p_aout->output.output.i_frame_length );
 
-                /* Reget the status */
-                i_snd_rc = snd_pcm_status( p_sys->p_snd_pcm, p_status );
-                if( i_snd_rc < 0 )
-                {
-                    msg_Err( p_aout, "unable to get the device's status after "
-                             "recovery (%s)", snd_strerror( i_snd_rc ) );
+#ifdef ALSA_DEBUG
+        snd_pcm_state_t state = snd_pcm_status_get_state( p_status );
+        if( state != SND_PCM_STATE_RUNNING )
+            msg_Err( p_aout, "pcm status (%d) != RUNNING", state );
 
-                    msleep( p_sys->i_period_time >> 1 );
-                    return;
-                }
-            }
-            else
-            {
-                msg_Err( p_aout, "unable to recover from buffer underrun" );
+        msg_Dbg( p_aout, "Delay is %ld frames (%d bytes)", delay, i_bytes );
 
-                msleep( p_sys->i_period_time >> 1 );
-                return;
-            }
+        msg_Dbg( p_aout, "Bytes per frame: %d", p_aout->output.output.i_bytes_per_frame );
+        msg_Dbg( p_aout, "Rate: %d", p_aout->output.output.i_rate );
+        msg_Dbg( p_aout, "Frame length: %d", p_aout->output.output.i_frame_length );
 
-            /* Underrun, try to recover as quickly as possible */
-            next_date = mdate();
-        }
-        else
-        {
-            /* Here the device should be either in the RUNNING state.
-             * p_status is valid. */
-
-#if 0
-    /* This apparently does not work correctly in Alsa 1.0.11 */
-            snd_pcm_status_get_tstamp( p_status, &ts_next );
-            next_date = (mtime_t)ts_next.tv_sec * 1000000 + ts_next.tv_usec;
-            if( next_date )
-            {
-                next_date += (mtime_t)snd_pcm_status_get_delay(p_status)
-                        * 1000000 / p_aout->output.output.i_rate;
-            }
-            else
+        msg_Dbg( p_aout, "Next date is in %d microseconds", (int)(next_date - mdate()) );
 #endif
-            {
-                /* With screwed ALSA drivers the timestamp is always zero;
-                 * use another method then */
-                snd_pcm_sframes_t delay = 0;
-
-                snd_pcm_delay( p_sys->p_snd_pcm, &delay );
-                next_date = mdate() + (mtime_t)(delay) * 1000000 /
-                          p_aout->output.output.i_rate
-                        * p_aout->output.output.i_frame_length;
-            }
-        }
+    }
 
-        p_buffer = aout_OutputNextBuffer( p_aout, next_date,
-                        (p_aout->output.output.i_format ==
-                         VLC_FOURCC('s','p','d','i')) );
+    p_buffer = aout_OutputNextBuffer( p_aout, next_date,
+           (p_aout->output.output.i_format ==  VLC_CODEC_SPDIFL) );
 
-        /* Audio output buffer shortage -> stop the fill process and wait */
-        if( p_buffer == NULL )
-        {
-            msleep( p_sys->i_period_time >> 1 );
-            return;
-        }
+    /* Audio output buffer shortage -> stop the fill process and wait */
+    if( p_buffer == NULL )
+        goto error;
 
+    for (;;)
+    {
         i_snd_rc = snd_pcm_writei( p_sys->p_snd_pcm, p_buffer->p_buffer,
                                    p_buffer->i_nb_samples );
+        if( i_snd_rc != -ESTRPIPE )
+            break;
 
-        if( i_snd_rc < 0 )
+        /* a suspend event occurred
+         * (stream is suspended and waiting for an application recovery) */
+        msg_Dbg( p_aout, "entering in suspend mode, trying to resume..." );
+
+        while( vlc_object_alive (p_aout) && vlc_object_alive (p_aout->p_libvlc) &&
+               ( i_snd_rc = snd_pcm_resume( p_sys->p_snd_pcm ) ) == -EAGAIN )
         {
-            msg_Err( p_aout, "write failed (%s)",
-                             snd_strerror( i_snd_rc ) );
+            msleep( 1000000 );
         }
 
-        aout_BufferFree( p_buffer );
+        if( i_snd_rc < 0 )
+            /* Device does not supprot resuming, restart it */
+            i_snd_rc = snd_pcm_prepare( p_sys->p_snd_pcm );
+
     }
+
+    if( i_snd_rc < 0 )
+        msg_Err( p_aout, "cannot write: %s", snd_strerror( i_snd_rc ) );
+
+    aout_BufferFree( p_buffer );
+    return;
+
+error:
+    if( i_snd_rc < 0 )
+        msg_Err( p_aout, "ALSA error: %s", snd_strerror( i_snd_rc ) );
+    msleep( p_sys->i_period_time >> 1 );
 }
 
-static void GetDevicesForCard(module_config_t *p_item, int i_card);
+static void GetDevicesForCard( module_config_t *p_item, int i_card );
 static void GetDevices( module_config_t *p_item );
 
 /*****************************************************************************
@@ -890,6 +917,9 @@ static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
 {
     module_config_t *p_item;
     int i;
+    (void)newval;
+    (void)oldval;
+    (void)p_unused;
 
     p_item = config_FindConfig( p_this, psz_name );
     if( !p_item ) return VLC_SUCCESS;
@@ -900,8 +930,8 @@ static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
         /* Keep the first entrie */
         for( i = 1; i < p_item->i_list; i++ )
         {
-            free( p_item->ppsz_list[i] );
-            free( p_item->ppsz_list_text[i] );
+            free( (char *)p_item->ppsz_list[i] );
+            free( (char *)p_item->ppsz_list_text[i] );
         }
         /* TODO: Remove when no more needed */
         p_item->ppsz_list[i] = NULL;
@@ -912,14 +942,13 @@ static int FindDevicesCallback( vlc_object_t *p_this, char const *psz_name,
     GetDevices( p_item );
 
     /* Signal change to the interface */
-    p_item->b_dirty = VLC_TRUE;
+    p_item->b_dirty = true;
 
     return VLC_SUCCESS;
-
 }
 
 
-static void GetDevicesForCard(module_config_t *p_item, int i_card)
+static void GetDevicesForCard( module_config_t *p_item, int i_card )
 {
     int i_pcm_device = -1;
     int i_err = 0;
@@ -927,50 +956,49 @@ static void GetDevicesForCard(module_config_t *p_item, int i_card)
     snd_ctl_t *p_ctl;
     char psz_dev[64];
     char *psz_card_name;
-    
-    sprintf(psz_dev, "hw:%i", i_card);
-    
-    if (( i_err = snd_ctl_open(&p_ctl, psz_dev, 0)) < 0 )
-    {
+
+    sprintf( psz_dev, "hw:%i", i_card );
+
+    if( ( i_err = snd_ctl_open( &p_ctl, psz_dev, 0 ) ) < 0 )
         return;
-    }
-    
-    if ((i_err = snd_card_get_name(i_card, &psz_card_name)) != 0)
-    {
+
+    if( ( i_err = snd_card_get_name( i_card, &psz_card_name ) ) != 0)
         psz_card_name = _("Unknown soundcard");
-    }
 
-    snd_pcm_info_alloca(&p_pcm_info);
+    snd_pcm_info_alloca( &p_pcm_info );
 
     for (;;)
     {
         char *psz_device, *psz_descr;
-        if ((i_err = snd_ctl_pcm_next_device(p_ctl, &i_pcm_device)) < 0)
-        {
+        if( ( i_err = snd_ctl_pcm_next_device( p_ctl, &i_pcm_device ) ) < 0 )
             i_pcm_device = -1;
-        }
-        if ( i_pcm_device < 0 )
+        if( i_pcm_device < 0 )
             break;
 
-        snd_pcm_info_set_device(p_pcm_info, i_pcm_device);
-        snd_pcm_info_set_subdevice(p_pcm_info, 0);
-        snd_pcm_info_set_stream(p_pcm_info, SND_PCM_STREAM_PLAYBACK);
+        snd_pcm_info_set_device( p_pcm_info, i_pcm_device );
+        snd_pcm_info_set_subdevice( p_pcm_info, 0 );
+        snd_pcm_info_set_stream( p_pcm_info, SND_PCM_STREAM_PLAYBACK );
 
-        if ((i_err = snd_ctl_pcm_info(p_ctl, p_pcm_info)) < 0)
+        if( ( i_err = snd_ctl_pcm_info( p_ctl, p_pcm_info ) ) < 0 )
         {
-            if (i_err != -ENOENT)
+            if( i_err != -ENOENT )
             {
-/*                printf("get_devices_for_card(): "
+                /*printf( "get_devices_for_card(): "
                          "snd_ctl_pcm_info() "
                          "failed (%d:%d): %s.\n", i_card,
-                         i_pcm_device, snd_strerror(-i_err));*/
+                         i_pcm_device, snd_strerror( -i_err ) );*/
             }
             continue;
         }
 
-        asprintf( &psz_device, "hw:%d,%d", i_card, i_pcm_device );
-        asprintf( &psz_descr, "%s: %s (%s)", psz_card_name,
-                  snd_pcm_info_get_name(p_pcm_info), psz_device );
+        if( asprintf( &psz_device, "hw:%d,%d", i_card, i_pcm_device ) == -1 )
+            break;
+        if( asprintf( &psz_descr, "%s: %s (%s)", psz_card_name,
+                  snd_pcm_info_get_name(p_pcm_info), psz_device ) == -1 )
+        {
+            free( psz_device );
+            break;
+        }
 
         p_item->ppsz_list =
             (char **)realloc( p_item->ppsz_list,
@@ -983,7 +1011,6 @@ static void GetDevicesForCard(module_config_t *p_item, int i_card)
         p_item->i_list++;
         p_item->ppsz_list[ p_item->i_list ] = NULL;
         p_item->ppsz_list_text[ p_item->i_list ] = NULL;
-                
     }
 
     snd_ctl_close( p_ctl );
@@ -995,20 +1022,19 @@ static void GetDevices( module_config_t *p_item )
 {
     int i_card = -1;
     int i_err = 0;
-    
-    if ((i_err = snd_card_next(&i_card)) != 0)
+
+    if( ( i_err = snd_card_next( &i_card ) ) != 0 )
     {
-//        g_warning("snd_next_card() failed: %s", snd_strerror(-err));
+        /*printf( "snd_card_next() failed: %s", snd_strerror( -i_err ) );*/
         return;
     }
-    
-    while (i_card > -1)
+
+    while( i_card > -1 )
     {
-        GetDevicesForCard(p_item, i_card);
-        if ((i_err = snd_card_next(&i_card)) != 0)
+        GetDevicesForCard( p_item, i_card );
+        if( ( i_err = snd_card_next( &i_card ) ) != 0 )
         {
-//            g_warning("snd_next_card() failed: %s",
-//                  snd_strerror(-err));
+            /*printf( "snd_card_next() failed: %s", snd_strerror( -i_err ) );*/
             break;
         }
     }