+
+/*
+ * Pipelines management
+ */
+
+/*****************************************************************************
+ * aout_Restart : re-open the output device and rebuild the input and output
+ * pipelines
+ *****************************************************************************
+ * This function is used whenever the parameters of the output plug-in are
+ * changed (eg. selecting S/PDIF or PCM).
+ *****************************************************************************/
+int aout_Restart( aout_instance_t * p_aout )
+{
+ int i;
+ vlc_bool_t b_error = 0;
+
+ vlc_mutex_lock( &p_aout->mixer_lock );
+
+ if ( p_aout->i_nb_inputs == 0 )
+ {
+ vlc_mutex_unlock( &p_aout->mixer_lock );
+ msg_Err( p_aout, "no decoder thread" );
+ return -1;
+ }
+
+ /* Lock all inputs. */
+ for ( i = 0; i < p_aout->i_nb_inputs; i++ )
+ {
+ vlc_mutex_lock( &p_aout->pp_inputs[i]->lock );
+ aout_InputDelete( p_aout, p_aout->pp_inputs[i] );
+ }
+
+ aout_MixerDelete( p_aout );
+
+ /* Re-open the output plug-in. */
+ aout_OutputDelete( p_aout );
+
+ if ( aout_OutputNew( p_aout, &p_aout->pp_inputs[0]->input ) == -1 )
+ {
+ /* Release all locks and report the error. */
+ for ( i = 0; i < p_aout->i_nb_inputs; i++ )
+ {
+ vlc_mutex_unlock( &p_aout->pp_inputs[i]->lock );
+ }
+ vlc_mutex_unlock( &p_aout->mixer_lock );
+ return -1;
+ }
+
+ if ( aout_MixerNew( p_aout ) == -1 )
+ {
+ aout_OutputDelete( p_aout );
+ for ( i = 0; i < p_aout->i_nb_inputs; i++ )
+ {
+ vlc_mutex_unlock( &p_aout->pp_inputs[i]->lock );
+ }
+ vlc_mutex_unlock( &p_aout->mixer_lock );
+ return -1;
+ }
+
+ /* Re-open all inputs. */
+ for ( i = 0; i < p_aout->i_nb_inputs; i++ )
+ {
+ aout_input_t * p_input = p_aout->pp_inputs[i];
+
+ b_error |= aout_InputNew( p_aout, p_input );
+ vlc_mutex_unlock( &p_input->lock );
+ }
+
+ vlc_mutex_unlock( &p_aout->mixer_lock );
+
+ return b_error;
+}
+
+/*****************************************************************************
+ * aout_FindAndRestart : find the audio output instance and restart
+ *****************************************************************************
+ * This is used for callbacks of the configuration variables, and we believe
+ * that when those are changed, it is a significant change which implies
+ * rebuilding the audio-device and audio-channels variables.
+ *****************************************************************************/
+void aout_FindAndRestart( vlc_object_t * p_this )
+{
+ aout_instance_t * p_aout = vlc_object_find( p_this, VLC_OBJECT_AOUT,
+ FIND_ANYWHERE );
+
+ if ( p_aout == NULL ) return;
+
+ if ( var_Type( p_aout, "audio-device" ) != 0 )
+ {
+ var_Destroy( p_aout, "audio-device" );
+ }
+ if ( var_Type( p_aout, "audio-channels" ) != 0 )
+ {
+ var_Destroy( p_aout, "audio-channels" );
+ }
+
+ aout_Restart( p_aout );
+ vlc_object_release( p_aout );
+}
+
+/*****************************************************************************
+ * aout_ChannelsRestart : change the audio device or channels and restart
+ *****************************************************************************/
+int aout_ChannelsRestart( vlc_object_t * p_this, const char * psz_variable,
+ vlc_value_t old_value, vlc_value_t new_value,
+ void * unused )
+{
+ aout_instance_t * p_aout = (aout_instance_t *)p_this;
+
+ if ( !strcmp( psz_variable, "audio-device" ) )
+ {
+ /* This is supposed to be a significant change and supposes
+ * rebuilding the channel choices. */
+ if ( var_Type( p_aout, "audio-channels" ) >= 0 )
+ {
+ var_Destroy( p_aout, "audio-channels" );
+ }
+ }
+ aout_Restart( p_aout );
+ return 0;
+}