[gnome-media] Implement port changing

[Bastien Nocera <hadess src gnome org>]

commit 5847b884a4d42f41c992b3f2424a4e21a9fc810e
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Jul 27 15:50:43 2009 +0100

    Implement port changing
    
    In both the sink and source.

 gnome-volume-control/src/gvc-mixer-sink.c   |   28 +++++++++++++++++++++++++++
 gnome-volume-control/src/gvc-mixer-source.c |   28 +++++++++++++++++++++++++++
 gnome-volume-control/src/gvc-mixer-stream.c |   12 +++++++++-
 gnome-volume-control/src/gvc-mixer-stream.h |    5 +++-
 4 files changed, 70 insertions(+), 3 deletions(-)
---
diff --git a/gnome-volume-control/src/gvc-mixer-sink.c b/gnome-volume-control/src/gvc-mixer-sink.c
index 06e5af6..4576db9 100644
--- a/gnome-volume-control/src/gvc-mixer-sink.c
+++ b/gnome-volume-control/src/gvc-mixer-sink.c
@@ -106,6 +106,33 @@ gvc_mixer_sink_change_is_muted (GvcMixerStream *stream,
         return TRUE;
 }
 
+static gboolean
+gvc_mixer_sink_change_port (GvcMixerStream *stream,
+                            const char     *port)
+{
+        pa_operation *o;
+        guint         index;
+        pa_context   *context;
+
+        index = gvc_mixer_stream_get_index (stream);
+        context = gvc_mixer_stream_get_pa_context (stream);
+
+        o = pa_context_set_sink_port_by_index (context,
+                                               index,
+                                               port,
+                                               NULL,
+                                               NULL);
+
+        if (o == NULL) {
+                g_warning ("pa_context_set_sink_port_by_index() failed: %s", pa_strerror(pa_context_errno(context)));
+                return FALSE;
+        }
+
+        pa_operation_unref(o);
+
+        return TRUE;
+}
+
 static GObject *
 gvc_mixer_sink_constructor (GType                  type,
                             guint                  n_construct_properties,
@@ -132,6 +159,7 @@ gvc_mixer_sink_class_init (GvcMixerSinkClass *klass)
         object_class->finalize = gvc_mixer_sink_finalize;
 
         stream_class->push_volume = gvc_mixer_sink_push_volume;
+        stream_class->change_port = gvc_mixer_sink_change_port;
         stream_class->change_is_muted = gvc_mixer_sink_change_is_muted;
 
         g_type_class_add_private (klass, sizeof (GvcMixerSinkPrivate));
diff --git a/gnome-volume-control/src/gvc-mixer-source.c b/gnome-volume-control/src/gvc-mixer-source.c
index ae02d85..8f8927f 100644
--- a/gnome-volume-control/src/gvc-mixer-source.c
+++ b/gnome-volume-control/src/gvc-mixer-source.c
@@ -106,6 +106,33 @@ gvc_mixer_source_change_is_muted (GvcMixerStream *stream,
         return TRUE;
 }
 
+static gboolean
+gvc_mixer_source_change_port (GvcMixerStream *stream,
+                              const char     *port)
+{
+        pa_operation *o;
+        guint         index;
+        pa_context   *context;
+
+        index = gvc_mixer_stream_get_index (stream);
+        context = gvc_mixer_stream_get_pa_context (stream);
+
+        o = pa_context_set_source_port_by_index (context,
+                                                 index,
+                                                 port,
+                                                 NULL,
+                                                 NULL);
+
+        if (o == NULL) {
+                g_warning ("pa_context_set_source_port_by_index() failed: %s", pa_strerror(pa_context_errno(context)));
+                return FALSE;
+        }
+
+        pa_operation_unref(o);
+
+        return TRUE;
+}
+
 static GObject *
 gvc_mixer_source_constructor (GType                  type,
                             guint                  n_construct_properties,
@@ -133,6 +160,7 @@ gvc_mixer_source_class_init (GvcMixerSourceClass *klass)
 
         stream_class->push_volume = gvc_mixer_source_push_volume;
         stream_class->change_is_muted = gvc_mixer_source_change_is_muted;
+        stream_class->change_port = gvc_mixer_source_change_port;
 
         g_type_class_add_private (klass, sizeof (GvcMixerSourcePrivate));
 }
diff --git a/gnome-volume-control/src/gvc-mixer-stream.c b/gnome-volume-control/src/gvc-mixer-stream.c
index b577b47..caea0f1 100644
--- a/gnome-volume-control/src/gvc-mixer-stream.c
+++ b/gnome-volume-control/src/gvc-mixer-stream.c
@@ -452,8 +452,8 @@ gboolean
 gvc_mixer_stream_change_port (GvcMixerStream *stream,
                               const char     *port)
 {
-        //FIXME implementz!
-        return FALSE;
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+        return GVC_MIXER_STREAM_GET_CLASS (stream)->change_port (stream, port);
 }
 
 const GList *
@@ -626,6 +626,13 @@ gvc_mixer_stream_constructor (GType                  type,
 }
 
 static gboolean
+gvc_mixer_stream_real_change_port (GvcMixerStream *stream,
+                                   const char     *port)
+{
+        return FALSE;
+}
+
+static gboolean
 gvc_mixer_stream_real_push_volume (GvcMixerStream *stream, gpointer *op)
 {
         return FALSE;
@@ -689,6 +696,7 @@ gvc_mixer_stream_class_init (GvcMixerStreamClass *klass)
         gobject_class->get_property = gvc_mixer_stream_get_property;
 
         klass->push_volume = gvc_mixer_stream_real_push_volume;
+        klass->change_port = gvc_mixer_stream_real_change_port;
         klass->change_is_muted = gvc_mixer_stream_real_change_is_muted;
 
         g_object_class_install_property (gobject_class,
diff --git a/gnome-volume-control/src/gvc-mixer-stream.h b/gnome-volume-control/src/gvc-mixer-stream.h
index 0113a2e..4ae2d34 100644
--- a/gnome-volume-control/src/gvc-mixer-stream.h
+++ b/gnome-volume-control/src/gvc-mixer-stream.h
@@ -48,9 +48,12 @@ typedef struct
         GObjectClass           parent_class;
 
         /* vtable */
-        gboolean (*push_volume)   (GvcMixerStream *stream, gpointer *operation);
+        gboolean (*push_volume)     (GvcMixerStream *stream,
+                                     gpointer *operation);
         gboolean (*change_is_muted) (GvcMixerStream *stream,
                                      gboolean        is_muted);
+        gboolean (*change_port)     (GvcMixerStream *stream,
+                                     const char     *port);
 } GvcMixerStreamClass;
 
 typedef struct