access/alsa.c: Silence overrun messages and add notify vlc core of timestamp

Silence overrun messages and add notify vlc core of timestamp.

modules/access/alsa.c

@@ -442,7 +442,6 @@ static int Demux( demux_t *p_demux )
         if( !p_block ) break;
 
         mtime_t i_pts = p_block->i_pts;
-        es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
         es_out_Send( p_demux->out, p_sys->p_es, p_block );
         p_block = NULL;
 
@@ -467,6 +466,7 @@ static void *AudioThread( vlc_object_t *p_this )
         p_block = GrabAudio( p_demux );
         if( p_block )
         {
+            es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
             block_FifoPut( p_sys->p_grab->p_fifo, p_block );
             p_block = NULL;
         }
@@ -555,8 +555,10 @@ static block_t* GrabAudio( demux_t *p_demux )
         /* Test for overrun */
         if( i_correction_delta > p_sys->i_max_frame_size )
         {
+#if 0
             msg_Warn( p_demux, "ALSA read overrun (%zu > %zu)",
                       i_correction_delta, p_sys->i_max_frame_size );
+#endif
             i_correction_delta = p_sys->i_max_frame_size;
             snd_pcm_prepare( p_sys->p_alsa_pcm );
         }