Dirty hack to make devices using snd_intel8x0 drivers happy with 96k streams

modules/audio_output/alsa.c

@@ -304,6 +304,7 @@ 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;
 
     /* Allocate structures */
     p_aout->output.p_sys = p_sys = malloc( sizeof( aout_sys_t ) );
@@ -493,6 +494,12 @@ static int Open( vlc_object_t *p_this )
     snd_pcm_hw_params_alloca(&p_hw);
     snd_pcm_sw_params_alloca(&p_sw);
 
+    /* Due to some bugs in alsa with some drivers, we need to retry in s16l
+       if snd_pcm_hw_params fails in fl32 */
+    while ( b_retry )
+    {
+        b_retry = VLC_FALSE;
+
         /* Get Initial hardware parameters */
         if ( ( i_snd_rc = snd_pcm_hw_params_any( p_sys->p_snd_pcm, p_hw ) ) < 0 )
         {
@@ -596,11 +603,24 @@ static int Open( vlc_object_t *p_this )
 
         /* Commit hardware parameters. */
         if ( ( i_snd_rc = snd_pcm_hw_params( p_sys->p_snd_pcm, p_hw ) ) < 0 )
+        {
+            if ( b_retry == VLC_FALSE &&
+                                i_snd_pcm_format == SND_PCM_FORMAT_FLOAT)
+            {
+                b_retry = VLC_TRUE;
+                i_snd_pcm_format = SND_PCM_FORMAT_S16;
+                p_aout->output.output.i_format = AOUT_FMT_S16_NE;
+                msg_Warn( p_aout, "unable to commit hardware configuration "
+                                  "with fl32 samples. Retrying with s16l (%s)",                                     snd_strerror( i_snd_rc ) );
+            }
+            else
             {
                 msg_Err( p_aout, "unable to commit hardware configuration (%s)",
                          snd_strerror( i_snd_rc ) );
                 goto error;
             }
+        }
+    }
 
 #ifdef HAVE_ALSA_NEW_API
     if( ( i_snd_rc = snd_pcm_hw_params_get_period_time( p_hw,