Add private gnome-volume-control library

The library is introspected, and should not require using
Pulseaudio directly.

With help from Giovanni Campagna <scampa.giovanni@gmail.com>
(introspection annotations, build fixes)

https://bugzilla.gnome.org/show_bug.cgi?id=629455

configure.ac

@@ -90,6 +90,7 @@ PKG_CHECK_MODULES(TIDY, clutter-1.0)
 PKG_CHECK_MODULES(ST, clutter-1.0 gtk+-3.0 libcroco-0.6 gnome-desktop-3.0 >= 2.90.0)
 PKG_CHECK_MODULES(GDMUSER, dbus-glib-1 gtk+-3.0)
 PKG_CHECK_MODULES(TRAY, gtk+-3.0)
+PKG_CHECK_MODULES(GVC, libpulse libpulse-mainloop-glib gobject-2.0)
 
 MUTTER_BIN_DIR=`$PKG_CONFIG --variable=exec_prefix mutter-plugins`/bin
 # FIXME: metacity-plugins.pc should point directly to its .gir file

src/Makefile-gvc.am

@@ -0,0 +1,69 @@
+noinst_LTLIBRARIES += libgvc.la
+
+libgvc_la_CPPFLAGS =			\
+	$(WARN_CFLAGS)			\
+	$(GVC_CFLAGS)			\
+	-I$(srcdir)/gvc/		\
+	-DWITH_INTROSPECTION		\
+	-DG_LOG_DOMAIN="\"Gvc\""
+
+libgvc_la_LIBADD =			\
+	$(GVC_LIBS)
+
+libgvc_la_LDFLAGS = -avoid-version
+
+libgvc_la_gir_sources = \
+	gvc/gvc-mixer-stream.h		\
+	gvc/gvc-mixer-stream.c		\
+	gvc/gvc-channel-map.h		\
+	gvc/gvc-channel-map.c		\
+	gvc/gvc-mixer-card.c		\
+	gvc/gvc-mixer-card.h		\
+	gvc/gvc-mixer-sink.h		\
+	gvc/gvc-mixer-sink.c		\
+	gvc/gvc-mixer-source.h		\
+	gvc/gvc-mixer-source.c		\
+	gvc/gvc-mixer-sink-input.h	\
+	gvc/gvc-mixer-sink-input.c	\
+	gvc/gvc-mixer-source-output.h	\
+	gvc/gvc-mixer-source-output.c	\
+	gvc/gvc-mixer-event-role.h	\
+	gvc/gvc-mixer-event-role.c	\
+	gvc/gvc-mixer-control.h		\
+	gvc/gvc-mixer-control.c		\
+	gvc/gvc-pulseaudio-fake.h
+
+libgvc_la_private_sources = 		\
+	gvc/gvc-mixer-stream-private.h	\
+	gvc/gvc-channel-map-private.h	\
+	gvc/gvc-mixer-card-private.h	\
+	gvc/gvc-mixer-control-private.h	\
+	gvc/gvc-pulseaudio-fake.h
+
+libgvc_la_SOURCES =			\
+	$(libgvc_la_gir_sources)	\
+	$(libgvc_la_private_sources)
+
+Gvc-1.0.gir: $(G_IR_SCANNER) libgvc.la Makefile
+	$(AM_V_GEN) $(G_IR_SCANNER)			\
+		--namespace=Gvc				\
+		--nsversion=1.0				\
+		--warn-all				\
+		--quiet					\
+		--libtool="$(LIBTOOL)"			\
+		--add-include-path=$(builddir)		\
+		--include=GObject-2.0			\
+		--library=libgvc.la			\
+		--identifier-prefix=Gvc			\
+		--symbol-prefix=gvc_			\
+		$(addprefix $(srcdir)/,$(libgvc_la_gir_sources))	\
+		$(INCLUDES)				\
+		-I $(srcdir)				\
+		-I $(srcdir)/gvc			\
+		-DWITH_INTROSPECTION			\
+		-o $@
+CLEANFILES += Gvc-1.0.gir
+
+Gvc-1.0.typelib: Gvc-1.0.gir
+	$(AM_V_GEN) $(G_IR_COMPILER) $< -o $@
+CLEANFILES += Gvc-1.0.typelib

src/Makefile.am

@@ -37,6 +37,7 @@ EXTRA_DIST += gnome-shell-clock-preferences.in
 include Makefile-gdmuser.am
 include Makefile-st.am
 include Makefile-tray.am
+include Makefile-gvc.am
 
 gnome_shell_cflags =				\
 	$(MUTTER_PLUGIN_CFLAGS)			\
@@ -190,11 +191,12 @@ libgnome_shell_la_LIBADD =	\
 	$(LIBGNOMEUI_LIBS)      \
 	libst-1.0.la       	\
 	libgdmuser-1.0.la	\
-	libtray.la
+	libtray.la		\
+	libgvc.la
 libgnome_shell_la_CPPFLAGS = $(gnome_shell_cflags)
 
 typelibdir = $(pkglibdir)
-typelib_DATA = Shell-0.1.typelib St-1.0.typelib Gdm-1.0.typelib
+typelib_DATA = Shell-0.1.typelib St-1.0.typelib Gdm-1.0.typelib Gvc-1.0.typelib
 
 Shell-0.1.gir: $(mutter) $(G_IR_SCANNER) St-1.0.gir libgnome-shell.la Makefile
 	$(AM_V_GEN) $(G_IR_SCANNER)			\

src/gnome-shell-plugin.c

@@ -296,6 +296,15 @@ add_statistics (GnomeShellPlugin *shell_plugin)
                                           NULL, NULL);
 }
 
+static void
+gvc_muted_debug_log_handler (const char     *log_domain,
+                             GLogLevelFlags  log_level,
+                             const char     *message,
+                             gpointer        data)
+{
+  /* Intentionally empty to discard message */
+}
+
 static void
 gnome_shell_plugin_start (MutterPlugin *plugin)
 {
@@ -355,6 +364,10 @@ gnome_shell_plugin_start (MutterPlugin *plugin)
   shell_plugin->gjs_context = gjs_context_new_with_search_path(search_path);
   g_strfreev(search_path);
 
+  /* Disable the gnome-volume-control debug */
+  g_log_set_handler ("Gvc", G_LOG_LEVEL_DEBUG,
+                     gvc_muted_debug_log_handler, NULL);
+
   /* Initialize the global object here. */
   global = shell_global_get ();
 

src/gvc/gvc-channel-map-private.h

@@ -0,0 +1,39 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_CHANNEL_MAP_PRIVATE_H
+#define __GVC_CHANNEL_MAP_PRIVATE_H
+
+#include <glib-object.h>
+#include <pulse/pulseaudio.h>
+
+G_BEGIN_DECLS
+
+GvcChannelMap *         gvc_channel_map_new_from_pa_channel_map (const pa_channel_map *map);
+const pa_channel_map *  gvc_channel_map_get_pa_channel_map      (const GvcChannelMap  *map);
+
+void                    gvc_channel_map_volume_changed          (GvcChannelMap    *map,
+                                                                 const pa_cvolume *cv,
+                                                                 gboolean          set);
+const pa_cvolume *      gvc_channel_map_get_cvolume             (const GvcChannelMap  *map);
+
+G_END_DECLS
+
+#endif /* __GVC_CHANNEL_MAP_PRIVATE_H */

src/gvc/gvc-channel-map.c

@@ -0,0 +1,254 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 William Jon McCann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n-lib.h>
+
+#include <pulse/pulseaudio.h>
+
+#include "gvc-channel-map.h"
+#include "gvc-channel-map-private.h"
+
+#define GVC_CHANNEL_MAP_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_CHANNEL_MAP, GvcChannelMapPrivate))
+
+struct GvcChannelMapPrivate
+{
+        pa_channel_map        pa_map;
+        gboolean              pa_volume_is_set;
+        pa_cvolume            pa_volume;
+        gdouble               extern_volume[NUM_TYPES]; /* volume, balance, fade, lfe */
+        gboolean              can_balance;
+        gboolean              can_fade;
+};
+
+enum {
+        VOLUME_CHANGED,
+        LAST_SIGNAL
+};
+
+static guint signals [LAST_SIGNAL] = { 0, };
+
+static void     gvc_channel_map_class_init (GvcChannelMapClass *klass);
+static void     gvc_channel_map_init       (GvcChannelMap      *channel_map);
+static void     gvc_channel_map_finalize   (GObject            *object);
+
+G_DEFINE_TYPE (GvcChannelMap, gvc_channel_map, G_TYPE_OBJECT)
+
+guint
+gvc_channel_map_get_num_channels (const GvcChannelMap *map)
+{
+        g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), 0);
+
+        if (!pa_channel_map_valid(&map->priv->pa_map))
+                return 0;
+
+        return map->priv->pa_map.channels;
+}
+
+const gdouble *
+gvc_channel_map_get_volume (GvcChannelMap *map)
+{
+        g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), NULL);
+
+        if (!pa_channel_map_valid(&map->priv->pa_map))
+                return NULL;
+
+        map->priv->extern_volume[VOLUME] = (gdouble) pa_cvolume_max (&map->priv->pa_volume);
+        if (gvc_channel_map_can_balance (map))
+                map->priv->extern_volume[BALANCE] = (gdouble) pa_cvolume_get_balance (&map->priv->pa_volume, &map->priv->pa_map);
+        else
+                map->priv->extern_volume[BALANCE] = 0;
+        if (gvc_channel_map_can_fade (map))
+                map->priv->extern_volume[FADE] = (gdouble) pa_cvolume_get_fade (&map->priv->pa_volume, &map->priv->pa_map);
+        else
+                map->priv->extern_volume[FADE] = 0;
+        if (gvc_channel_map_has_lfe (map))
+                map->priv->extern_volume[LFE] = (gdouble) pa_cvolume_get_position (&map->priv->pa_volume, &map->priv->pa_map, PA_CHANNEL_POSITION_LFE);
+        else
+                map->priv->extern_volume[LFE] = 0;
+
+        return map->priv->extern_volume;
+}
+
+gboolean
+gvc_channel_map_can_balance (const GvcChannelMap  *map)
+{
+        g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), FALSE);
+
+        return map->priv->can_balance;
+}
+
+gboolean
+gvc_channel_map_can_fade (const GvcChannelMap  *map)
+{
+        g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), FALSE);
+
+        return map->priv->can_fade;
+}
+
+const char *
+gvc_channel_map_get_mapping (const GvcChannelMap  *map)
+{
+        g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), NULL);
+
+        if (!pa_channel_map_valid(&map->priv->pa_map))
+                return NULL;
+
+        return pa_channel_map_to_pretty_name (&map->priv->pa_map);
+}
+
+/**
+ * gvc_channel_map_has_position: (skip)
+ *
+ * @map:
+ * @position:
+ *
+ * Returns:
+ */
+gboolean
+gvc_channel_map_has_position (const GvcChannelMap  *map,
+                              pa_channel_position_t position)
+{
+        g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), FALSE);
+
+        return pa_channel_map_has_position (&(map->priv->pa_map), position);
+}
+
+const pa_channel_map *
+gvc_channel_map_get_pa_channel_map (const GvcChannelMap  *map)
+{
+        g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), NULL);
+
+        if (!pa_channel_map_valid(&map->priv->pa_map))
+                return NULL;
+
+        return &map->priv->pa_map;
+}
+
+const pa_cvolume *
+gvc_channel_map_get_cvolume (const GvcChannelMap  *map)
+{
+        g_return_val_if_fail (GVC_IS_CHANNEL_MAP (map), NULL);
+
+        if (!pa_channel_map_valid(&map->priv->pa_map))
+                return NULL;
+
+        return &map->priv->pa_volume;
+}
+
+static void
+gvc_channel_map_class_init (GvcChannelMapClass *klass)
+{
+        GObjectClass   *gobject_class = G_OBJECT_CLASS (klass);
+
+        gobject_class->finalize = gvc_channel_map_finalize;
+
+        signals [VOLUME_CHANGED] =
+                g_signal_new ("volume-changed",
+                              G_TYPE_FROM_CLASS (klass),
+                              G_SIGNAL_RUN_LAST,
+                              G_STRUCT_OFFSET (GvcChannelMapClass, volume_changed),
+                              NULL, NULL,
+                              g_cclosure_marshal_VOID__BOOLEAN,
+                              G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
+
+        g_type_class_add_private (klass, sizeof (GvcChannelMapPrivate));
+}
+
+void
+gvc_channel_map_volume_changed (GvcChannelMap     *map,
+                                const pa_cvolume  *cv,
+                                gboolean           set)
+{
+        g_return_if_fail (GVC_IS_CHANNEL_MAP (map));
+        g_return_if_fail (cv != NULL);
+        g_return_if_fail (pa_cvolume_compatible_with_channel_map(cv, &map->priv->pa_map));
+
+        if (pa_cvolume_equal(cv, &map->priv->pa_volume))
+                return;
+
+        map->priv->pa_volume = *cv;
+
+        if (map->priv->pa_volume_is_set == FALSE) {
+                map->priv->pa_volume_is_set = TRUE;
+                return;
+        }
+        g_signal_emit (map, signals[VOLUME_CHANGED], 0, set);
+}
+
+static void
+gvc_channel_map_init (GvcChannelMap *map)
+{
+        map->priv = GVC_CHANNEL_MAP_GET_PRIVATE (map);
+        map->priv->pa_volume_is_set = FALSE;
+}
+
+static void
+gvc_channel_map_finalize (GObject *object)
+{
+        GvcChannelMap *channel_map;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_CHANNEL_MAP (object));
+
+        channel_map = GVC_CHANNEL_MAP (object);
+
+        g_return_if_fail (channel_map->priv != NULL);
+
+        G_OBJECT_CLASS (gvc_channel_map_parent_class)->finalize (object);
+}
+
+GvcChannelMap *
+gvc_channel_map_new (void)
+{
+        GObject *map;
+        map = g_object_new (GVC_TYPE_CHANNEL_MAP, NULL);
+        return GVC_CHANNEL_MAP (map);
+}
+
+static void
+set_from_pa_map (GvcChannelMap        *map,
+                 const pa_channel_map *pa_map)
+{
+        g_assert (pa_channel_map_valid(pa_map));
+
+        map->priv->can_balance = pa_channel_map_can_balance (pa_map);
+        map->priv->can_fade = pa_channel_map_can_fade (pa_map);
+
+        map->priv->pa_map = *pa_map;
+        pa_cvolume_set(&map->priv->pa_volume, pa_map->channels, PA_VOLUME_NORM);
+}
+
+GvcChannelMap *
+gvc_channel_map_new_from_pa_channel_map (const pa_channel_map *pa_map)
+{
+        GObject *map;
+        map = g_object_new (GVC_TYPE_CHANNEL_MAP, NULL);
+
+        set_from_pa_map (GVC_CHANNEL_MAP (map), pa_map);
+
+        return GVC_CHANNEL_MAP (map);
+}

src/gvc/gvc-channel-map.h

@@ -0,0 +1,73 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_CHANNEL_MAP_H
+#define __GVC_CHANNEL_MAP_H
+
+#include <glib-object.h>
+#include <gvc-pulseaudio-fake.h>
+
+G_BEGIN_DECLS
+
+#define GVC_TYPE_CHANNEL_MAP         (gvc_channel_map_get_type ())
+#define GVC_CHANNEL_MAP(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GVC_TYPE_CHANNEL_MAP, GvcChannelMap))
+#define GVC_CHANNEL_MAP_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), GVC_TYPE_CHANNEL_MAP, GvcChannelMapClass))
+#define GVC_IS_CHANNEL_MAP(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GVC_TYPE_CHANNEL_MAP))
+#define GVC_IS_CHANNEL_MAP_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GVC_TYPE_CHANNEL_MAP))
+#define GVC_CHANNEL_MAP_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GVC_TYPE_CHANNEL_MAP, GvcChannelMapClass))
+
+typedef struct GvcChannelMapPrivate GvcChannelMapPrivate;
+
+typedef struct
+{
+        GObject               parent;
+        GvcChannelMapPrivate *priv;
+} GvcChannelMap;
+
+typedef struct
+{
+        GObjectClass           parent_class;
+        void (*volume_changed) (GvcChannelMap *channel_map, gboolean set);
+} GvcChannelMapClass;
+
+enum {
+        VOLUME,
+        BALANCE,
+        FADE,
+        LFE,
+        NUM_TYPES
+};
+
+GType                   gvc_channel_map_get_type                (void);
+
+GvcChannelMap *         gvc_channel_map_new                     (void);
+guint                   gvc_channel_map_get_num_channels        (const GvcChannelMap  *map);
+const gdouble *         gvc_channel_map_get_volume              (GvcChannelMap  *map);
+gboolean                gvc_channel_map_can_balance             (const GvcChannelMap  *map);
+gboolean                gvc_channel_map_can_fade                (const GvcChannelMap  *map);
+gboolean                gvc_channel_map_has_position            (const GvcChannelMap  *map,
+                                                                 pa_channel_position_t position);
+#define                 gvc_channel_map_has_lfe(x)              gvc_channel_map_has_position (x, PA_CHANNEL_POSITION_LFE)
+
+const char *            gvc_channel_map_get_mapping             (const GvcChannelMap  *map);
+
+G_END_DECLS
+
+#endif /* __GVC_CHANNEL_MAP_H */

src/gvc/gvc-mixer-card-private.h

@@ -0,0 +1,35 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008-2009 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_CARD_PRIVATE_H
+#define __GVC_MIXER_CARD_PRIVATE_H
+
+#include <pulse/pulseaudio.h>
+#include "gvc-mixer-card.h"
+
+G_BEGIN_DECLS
+
+GvcMixerCard *        gvc_mixer_card_new               (pa_context   *context,
+                                                        guint         index);
+pa_context *          gvc_mixer_card_get_pa_context    (GvcMixerCard *card);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_CARD_PRIVATE_H */

src/gvc/gvc-mixer-card.c

@@ -0,0 +1,506 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 William Jon McCann
+ * Copyright (C) 2009 Bastien Nocera
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n-lib.h>
+
+#include <pulse/pulseaudio.h>
+
+#include "gvc-mixer-card.h"
+#include "gvc-mixer-card-private.h"
+
+#define GVC_MIXER_CARD_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_MIXER_CARD, GvcMixerCardPrivate))
+
+static guint32 card_serial = 1;
+
+struct GvcMixerCardPrivate
+{
+        pa_context    *pa_context;
+        guint          id;
+        guint          index;
+        char          *name;
+        char          *icon_name;
+        char          *profile;
+        char          *target_profile;
+        char          *human_profile;
+        GList         *profiles;
+        pa_operation  *profile_op;
+};
+
+enum
+{
+        PROP_0,
+        PROP_ID,
+        PROP_PA_CONTEXT,
+        PROP_INDEX,
+        PROP_NAME,
+        PROP_ICON_NAME,
+        PROP_PROFILE,
+        PROP_HUMAN_PROFILE,
+};
+
+static void     gvc_mixer_card_class_init (GvcMixerCardClass *klass);
+static void     gvc_mixer_card_init       (GvcMixerCard      *mixer_card);
+static void     gvc_mixer_card_finalize   (GObject            *object);
+
+G_DEFINE_TYPE (GvcMixerCard, gvc_mixer_card, G_TYPE_OBJECT)
+
+static guint32
+get_next_card_serial (void)
+{
+        guint32 serial;
+
+        serial = card_serial++;
+
+        if ((gint32)card_serial < 0) {
+                card_serial = 1;
+        }
+
+        return serial;
+}
+
+pa_context *
+gvc_mixer_card_get_pa_context (GvcMixerCard *card)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), 0);
+        return card->priv->pa_context;
+}
+
+guint
+gvc_mixer_card_get_index (GvcMixerCard *card)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), 0);
+        return card->priv->index;
+}
+
+guint
+gvc_mixer_card_get_id (GvcMixerCard *card)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), 0);
+        return card->priv->id;
+}
+
+const char *
+gvc_mixer_card_get_name (GvcMixerCard *card)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), NULL);
+        return card->priv->name;
+}
+
+gboolean
+gvc_mixer_card_set_name (GvcMixerCard *card,
+                         const char     *name)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), FALSE);
+
+        g_free (card->priv->name);
+        card->priv->name = g_strdup (name);
+        g_object_notify (G_OBJECT (card), "name");
+
+        return TRUE;
+}
+
+const char *
+gvc_mixer_card_get_icon_name (GvcMixerCard *card)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), NULL);
+        return card->priv->icon_name;
+}
+
+gboolean
+gvc_mixer_card_set_icon_name (GvcMixerCard *card,
+                              const char     *icon_name)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), FALSE);
+
+        g_free (card->priv->icon_name);
+        card->priv->icon_name = g_strdup (icon_name);
+        g_object_notify (G_OBJECT (card), "icon-name");
+
+        return TRUE;
+}
+
+/**
+ * gvc_mixer_card_get_profile: (skip)
+ *
+ * @card:
+ *
+ * Returns:
+ */
+GvcMixerCardProfile *
+gvc_mixer_card_get_profile (GvcMixerCard *card)
+{
+        GList *l;
+
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), NULL);
+        g_return_val_if_fail (card->priv->profiles != NULL, FALSE);
+
+        for (l = card->priv->profiles; l != NULL; l = l->next) {
+                GvcMixerCardProfile *p = l->data;
+                if (g_str_equal (card->priv->profile, p->profile)) {
+                        return p;
+                }
+        }
+
+        g_assert_not_reached ();
+
+        return NULL;
+}
+
+gboolean
+gvc_mixer_card_set_profile (GvcMixerCard *card,
+                            const char     *profile)
+{
+        GList *l;
+
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), FALSE);
+        g_return_val_if_fail (card->priv->profiles != NULL, FALSE);
+
+        g_free (card->priv->profile);
+        card->priv->profile = g_strdup (profile);
+
+        g_free (card->priv->human_profile);
+        card->priv->human_profile = NULL;
+
+        for (l = card->priv->profiles; l != NULL; l = l->next) {
+                GvcMixerCardProfile *p = l->data;
+                if (g_str_equal (card->priv->profile, p->profile)) {
+                        card->priv->human_profile = g_strdup (p->human_profile);
+                        break;
+                }
+        }
+
+        g_object_notify (G_OBJECT (card), "profile");
+
+        return TRUE;
+}
+
+static void
+_pa_context_set_card_profile_by_index_cb (pa_context                       *context,
+                                          int                               success,
+                                          void                             *userdata)
+{
+        GvcMixerCard *card = GVC_MIXER_CARD (userdata);
+
+        g_assert (card->priv->target_profile);
+
+        if (success > 0) {
+                gvc_mixer_card_set_profile (card, card->priv->target_profile);
+        } else {
+                g_debug ("Failed to switch profile on '%s' from '%s' to '%s'",
+                         card->priv->name,
+                         card->priv->profile,
+                         card->priv->target_profile);
+        }
+        g_free (card->priv->target_profile);
+        card->priv->target_profile = NULL;
+
+        pa_operation_unref (card->priv->profile_op);
+        card->priv->profile_op = NULL;
+}
+
+gboolean
+gvc_mixer_card_change_profile (GvcMixerCard *card,
+                               const char *profile)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), FALSE);
+        g_return_val_if_fail (card->priv->profiles != NULL, FALSE);
+
+        /* Same profile, or already requested? */
+        if (g_strcmp0 (card->priv->profile, profile) == 0)
+                return TRUE;
+        if (g_strcmp0 (profile, card->priv->target_profile) == 0)
+                return TRUE;
+        if (card->priv->profile_op != NULL) {
+                pa_operation_cancel (card->priv->profile_op);
+                pa_operation_unref (card->priv->profile_op);
+                card->priv->profile_op = NULL;
+        }
+
+        if (card->priv->profile != NULL) {
+                g_free (card->priv->target_profile);
+                card->priv->target_profile = g_strdup (profile);
+
+                card->priv->profile_op = pa_context_set_card_profile_by_index (card->priv->pa_context,
+                                                                               card->priv->index,
+                                                                               card->priv->target_profile,
+                                                                               _pa_context_set_card_profile_by_index_cb,
+                                                                               card);
+
+                if (card->priv->profile_op == NULL) {
+                        g_warning ("pa_context_set_card_profile_by_index() failed");
+                        return FALSE;
+                }
+        } else {
+                g_assert (card->priv->human_profile == NULL);
+                card->priv->profile = g_strdup (profile);
+        }
+
+        return TRUE;
+}
+
+const GList *
+gvc_mixer_card_get_profiles (GvcMixerCard *card)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), FALSE);
+        return card->priv->profiles;
+}
+
+static int
+sort_profiles (GvcMixerCardProfile *a,
+               GvcMixerCardProfile *b)
+{
+        if (a->priority == b->priority)
+                return 0;
+        if (a->priority > b->priority)
+                return 1;
+        return -1;
+}
+
+gboolean
+gvc_mixer_card_set_profiles (GvcMixerCard *card,
+                             GList        *profiles)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_CARD (card), FALSE);
+        g_return_val_if_fail (card->priv->profiles == NULL, FALSE);
+
+        card->priv->profiles = g_list_sort (profiles, (GCompareFunc) sort_profiles);
+
+        return TRUE;
+}
+
+static void
+gvc_mixer_card_set_property (GObject       *object,
+                             guint          prop_id,
+                             const GValue  *value,
+                             GParamSpec    *pspec)
+{
+        GvcMixerCard *self = GVC_MIXER_CARD (object);
+
+        switch (prop_id) {
+        case PROP_PA_CONTEXT:
+                self->priv->pa_context = g_value_get_pointer (value);
+                break;
+        case PROP_INDEX:
+                self->priv->index = g_value_get_ulong (value);
+                break;
+        case PROP_ID:
+                self->priv->id = g_value_get_ulong (value);
+                break;
+        case PROP_NAME:
+                gvc_mixer_card_set_name (self, g_value_get_string (value));
+                break;
+        case PROP_ICON_NAME:
+                gvc_mixer_card_set_icon_name (self, g_value_get_string (value));
+                break;
+        case PROP_PROFILE:
+                gvc_mixer_card_set_profile (self, g_value_get_string (value));
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static void
+gvc_mixer_card_get_property (GObject     *object,
+                             guint        prop_id,
+                             GValue      *value,
+                             GParamSpec  *pspec)
+{
+        GvcMixerCard *self = GVC_MIXER_CARD (object);
+
+        switch (prop_id) {
+        case PROP_PA_CONTEXT:
+                g_value_set_pointer (value, self->priv->pa_context);
+                break;
+        case PROP_INDEX:
+                g_value_set_ulong (value, self->priv->index);
+                break;
+        case PROP_ID:
+                g_value_set_ulong (value, self->priv->id);
+                break;
+        case PROP_NAME:
+                g_value_set_string (value, self->priv->name);
+                break;
+        case PROP_ICON_NAME:
+                g_value_set_string (value, self->priv->icon_name);
+                break;
+        case PROP_PROFILE:
+                g_value_set_string (value, self->priv->profile);
+                break;
+        case PROP_HUMAN_PROFILE:
+                g_value_set_string (value, self->priv->human_profile);
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static GObject *
+gvc_mixer_card_constructor (GType                  type,
+                            guint                  n_construct_properties,
+                            GObjectConstructParam *construct_params)
+{
+        GObject       *object;
+        GvcMixerCard *self;
+
+        object = G_OBJECT_CLASS (gvc_mixer_card_parent_class)->constructor (type, n_construct_properties, construct_params);
+
+        self = GVC_MIXER_CARD (object);
+
+        self->priv->id = get_next_card_serial ();
+
+        return object;
+}
+
+static void
+gvc_mixer_card_class_init (GvcMixerCardClass *klass)
+{
+        GObjectClass   *gobject_class = G_OBJECT_CLASS (klass);
+
+        gobject_class->constructor = gvc_mixer_card_constructor;
+        gobject_class->finalize = gvc_mixer_card_finalize;
+
+        gobject_class->set_property = gvc_mixer_card_set_property;
+        gobject_class->get_property = gvc_mixer_card_get_property;
+
+        g_object_class_install_property (gobject_class,
+                                         PROP_INDEX,
+                                         g_param_spec_ulong ("index",
+                                                             "Index",
+                                                             "The index for this card",
+                                                             0, G_MAXULONG, 0,
+                                                             G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
+        g_object_class_install_property (gobject_class,
+                                         PROP_ID,
+                                         g_param_spec_ulong ("id",
+                                                             "id",
+                                                             "The id for this card",
+                                                             0, G_MAXULONG, 0,
+                                                             G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
+        g_object_class_install_property (gobject_class,
+                                         PROP_PA_CONTEXT,
+                                         g_param_spec_pointer ("pa-context",
+                                                               "PulseAudio context",
+                                                               "The PulseAudio context for this card",
+                                                               G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
+        g_object_class_install_property (gobject_class,
+                                         PROP_NAME,
+                                         g_param_spec_string ("name",
+                                                              "Name",
+                                                              "Name to display for this card",
+                                                              NULL,
+                                                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_ICON_NAME,
+                                         g_param_spec_string ("icon-name",
+                                                              "Icon Name",
+                                                              "Name of icon to display for this card",
+                                                              NULL,
+                                                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_PROFILE,
+                                         g_param_spec_string ("profile",
+                                                              "Profile",
+                                                              "Name of current profile for this card",
+                                                              NULL,
+                                                              G_PARAM_READWRITE));
+        g_object_class_install_property (gobject_class,
+                                         PROP_HUMAN_PROFILE,
+                                         g_param_spec_string ("human-profile",
+                                                              "Profile (Human readable)",
+                                                              "Name of current profile for this card in human readable form",
+                                                              NULL,
+                                                              G_PARAM_READABLE));
+
+        g_type_class_add_private (klass, sizeof (GvcMixerCardPrivate));
+}
+
+static void
+gvc_mixer_card_init (GvcMixerCard *card)
+{
+        card->priv = GVC_MIXER_CARD_GET_PRIVATE (card);
+}
+
+GvcMixerCard *
+gvc_mixer_card_new (pa_context *context,
+                    guint       index)
+{
+        GObject *object;
+
+        object = g_object_new (GVC_TYPE_MIXER_CARD,
+                               "index", index,
+                               "pa-context", context,
+                               NULL);
+        return GVC_MIXER_CARD (object);
+}
+
+static void
+free_profile (GvcMixerCardProfile *p)
+{
+        g_free (p->profile);
+        g_free (p->human_profile);
+        g_free (p->status);
+        g_free (p);
+}
+
+static void
+gvc_mixer_card_finalize (GObject *object)
+{
+        GvcMixerCard *mixer_card;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_MIXER_CARD (object));
+
+        mixer_card = GVC_MIXER_CARD (object);
+
+        g_return_if_fail (mixer_card->priv != NULL);
+
+        g_free (mixer_card->priv->name);
+        mixer_card->priv->name = NULL;
+
+        g_free (mixer_card->priv->icon_name);
+        mixer_card->priv->icon_name = NULL;
+
+        g_free (mixer_card->priv->target_profile);
+        mixer_card->priv->target_profile = NULL;
+
+        g_free (mixer_card->priv->profile);
+        mixer_card->priv->profile = NULL;
+
+        g_free (mixer_card->priv->human_profile);
+        mixer_card->priv->human_profile = NULL;
+
+        g_list_foreach (mixer_card->priv->profiles, (GFunc) free_profile, NULL);
+        g_list_free (mixer_card->priv->profiles);
+        mixer_card->priv->profiles = NULL;
+
+        G_OBJECT_CLASS (gvc_mixer_card_parent_class)->finalize (object);
+}
+

src/gvc/gvc-mixer-card.h

@@ -0,0 +1,83 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008-2009 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_CARD_H
+#define __GVC_MIXER_CARD_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define GVC_TYPE_MIXER_CARD         (gvc_mixer_card_get_type ())
+#define GVC_MIXER_CARD(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GVC_TYPE_MIXER_CARD, GvcMixerCard))
+#define GVC_MIXER_CARD_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), GVC_TYPE_MIXER_CARD, GvcMixerCardClass))
+#define GVC_IS_MIXER_CARD(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GVC_TYPE_MIXER_CARD))
+#define GVC_IS_MIXER_CARD_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GVC_TYPE_MIXER_CARD))
+#define GVC_MIXER_CARD_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GVC_TYPE_MIXER_CARD, GvcMixerCardClass))
+
+typedef struct GvcMixerCardPrivate GvcMixerCardPrivate;
+
+typedef struct
+{
+        GObject                parent;
+        GvcMixerCardPrivate   *priv;
+} GvcMixerCard;
+
+typedef struct
+{
+        GObjectClass           parent_class;
+
+        /* vtable */
+} GvcMixerCardClass;
+
+typedef struct
+{
+        char *profile;
+        char *human_profile;
+        char *status;
+        guint priority;
+        guint n_sinks, n_sources;
+} GvcMixerCardProfile;
+
+GType                 gvc_mixer_card_get_type          (void);
+
+guint                 gvc_mixer_card_get_id            (GvcMixerCard *card);
+guint                 gvc_mixer_card_get_index         (GvcMixerCard *card);
+const char *          gvc_mixer_card_get_name          (GvcMixerCard *card);
+const char *          gvc_mixer_card_get_icon_name     (GvcMixerCard *card);
+GvcMixerCardProfile * gvc_mixer_card_get_profile       (GvcMixerCard *card);
+const GList *         gvc_mixer_card_get_profiles      (GvcMixerCard *card);
+
+gboolean              gvc_mixer_card_change_profile    (GvcMixerCard *card,
+                                                        const char *profile);
+
+/* private */
+gboolean              gvc_mixer_card_set_name          (GvcMixerCard *card,
+                                                        const char   *name);
+gboolean              gvc_mixer_card_set_icon_name     (GvcMixerCard *card,
+                                                        const char   *name);
+gboolean              gvc_mixer_card_set_profile       (GvcMixerCard *card,
+                                                        const char   *profile);
+gboolean              gvc_mixer_card_set_profiles      (GvcMixerCard *card,
+                                                        GList        *profiles);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_CARD_H */

src/gvc/gvc-mixer-control-private.h

@@ -0,0 +1,35 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_CONTROL_PRIVATE_H
+#define __GVC_MIXER_CONTROL_PRIVATE_H
+
+#include <glib-object.h>
+#include <pulse/pulseaudio.h>
+#include "gvc-mixer-stream.h"
+#include "gvc-mixer-card.h"
+
+G_BEGIN_DECLS
+
+pa_context *        gvc_mixer_control_get_pa_context      (GvcMixerControl *control);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_CONTROL_PRIVATE_H */

src/gvc/gvc-mixer-control.h

@@ -0,0 +1,96 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_CONTROL_H
+#define __GVC_MIXER_CONTROL_H
+
+#include <glib-object.h>
+#include "gvc-mixer-stream.h"
+#include "gvc-mixer-card.h"
+
+G_BEGIN_DECLS
+
+#define GVC_TYPE_MIXER_CONTROL         (gvc_mixer_control_get_type ())
+#define GVC_MIXER_CONTROL(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GVC_TYPE_MIXER_CONTROL, GvcMixerControl))
+#define GVC_MIXER_CONTROL_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), GVC_TYPE_MIXER_CONTROL, GvcMixerControlClass))
+#define GVC_IS_MIXER_CONTROL(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GVC_TYPE_MIXER_CONTROL))
+#define GVC_IS_MIXER_CONTROL_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GVC_TYPE_MIXER_CONTROL))
+#define GVC_MIXER_CONTROL_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GVC_TYPE_MIXER_CONTROL, GvcMixerControlClass))
+
+typedef struct GvcMixerControlPrivate GvcMixerControlPrivate;
+
+typedef struct
+{
+        GObject                 parent;
+        GvcMixerControlPrivate *priv;
+} GvcMixerControl;
+
+typedef struct
+{
+        GObjectClass            parent_class;
+
+        void (*connecting)             (GvcMixerControl *control);
+        void (*ready)                  (GvcMixerControl *control);
+        void (*stream_added)           (GvcMixerControl *control,
+                                        guint            id);
+        void (*stream_removed)         (GvcMixerControl *control,
+                                        guint            id);
+        void (*card_added)             (GvcMixerControl *control,
+                                        guint            id);
+        void (*card_removed)           (GvcMixerControl *control,
+                                        guint            id);
+        void (*default_sink_changed)   (GvcMixerControl *control,
+                                        guint            id);
+        void (*default_source_changed) (GvcMixerControl *control,
+                                        guint            id);
+} GvcMixerControlClass;
+
+GType               gvc_mixer_control_get_type            (void);
+
+GvcMixerControl *   gvc_mixer_control_new                 (const char *name);
+
+gboolean            gvc_mixer_control_open                (GvcMixerControl *control);
+gboolean            gvc_mixer_control_close               (GvcMixerControl *control);
+gboolean            gvc_mixer_control_is_ready            (GvcMixerControl *control);
+
+GSList *            gvc_mixer_control_get_cards           (GvcMixerControl *control);
+GSList *            gvc_mixer_control_get_streams         (GvcMixerControl *control);
+GSList *            gvc_mixer_control_get_sinks           (GvcMixerControl *control);
+GSList *            gvc_mixer_control_get_sources         (GvcMixerControl *control);
+GSList *            gvc_mixer_control_get_sink_inputs     (GvcMixerControl *control);
+GSList *            gvc_mixer_control_get_source_outputs  (GvcMixerControl *control);
+
+GvcMixerStream *    gvc_mixer_control_lookup_stream_id    (GvcMixerControl *control,
+                                                           guint            id);
+GvcMixerCard   *    gvc_mixer_control_lookup_card_id      (GvcMixerControl *control,
+                                                           guint            id);
+
+GvcMixerStream *    gvc_mixer_control_get_default_sink     (GvcMixerControl *control);
+GvcMixerStream *    gvc_mixer_control_get_default_source   (GvcMixerControl *control);
+GvcMixerStream *    gvc_mixer_control_get_event_sink_input (GvcMixerControl *control);
+
+gboolean            gvc_mixer_control_set_default_sink     (GvcMixerControl *control,
+                                                            GvcMixerStream  *stream);
+gboolean            gvc_mixer_control_set_default_source   (GvcMixerControl *control,
+                                                            GvcMixerStream  *stream);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_CONTROL_H */

src/gvc/gvc-mixer-event-role.c

@@ -0,0 +1,250 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 William Jon McCann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n-lib.h>
+
+#include <pulse/pulseaudio.h>
+#include <pulse/ext-stream-restore.h>
+
+#include "gvc-mixer-event-role.h"
+#include "gvc-mixer-stream-private.h"
+#include "gvc-channel-map-private.h"
+
+#define GVC_MIXER_EVENT_ROLE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_MIXER_EVENT_ROLE, GvcMixerEventRolePrivate))
+
+struct GvcMixerEventRolePrivate
+{
+        char          *device;
+};
+
+enum
+{
+        PROP_0,
+        PROP_DEVICE
+};
+
+static void     gvc_mixer_event_role_class_init (GvcMixerEventRoleClass *klass);
+static void     gvc_mixer_event_role_init       (GvcMixerEventRole      *mixer_event_role);
+static void     gvc_mixer_event_role_finalize   (GObject            *object);
+
+G_DEFINE_TYPE (GvcMixerEventRole, gvc_mixer_event_role, GVC_TYPE_MIXER_STREAM)
+
+static gboolean
+update_settings (GvcMixerEventRole *role,
+                 gboolean           is_muted,
+                 gpointer          *op)
+{
+        pa_operation              *o;
+        guint                      index;
+        const GvcChannelMap       *map;
+        pa_context                *context;
+        pa_ext_stream_restore_info info;
+
+        index = gvc_mixer_stream_get_index (GVC_MIXER_STREAM (role));
+
+        map = gvc_mixer_stream_get_channel_map (GVC_MIXER_STREAM(role));
+
+        info.volume = *gvc_channel_map_get_cvolume(map);
+        info.name = "sink-input-by-media-role:event";
+        info.channel_map = *gvc_channel_map_get_pa_channel_map(map);
+        info.device = role->priv->device;
+        info.mute = is_muted;
+
+        context = gvc_mixer_stream_get_pa_context (GVC_MIXER_STREAM (role));
+
+        o = pa_ext_stream_restore_write (context,
+                                         PA_UPDATE_REPLACE,
+                                         &info,
+                                         1,
+                                         TRUE,
+                                         NULL,
+                                         NULL);
+
+        if (o == NULL) {
+                g_warning ("pa_ext_stream_restore_write() failed");
+                return FALSE;
+        }
+
+        if (op != NULL)
+                *op = o;
+
+        return TRUE;
+}
+
+static gboolean
+gvc_mixer_event_role_push_volume (GvcMixerStream *stream, gpointer *op)
+{
+        return update_settings (GVC_MIXER_EVENT_ROLE (stream),
+                                gvc_mixer_stream_get_is_muted (stream), op);
+}
+
+static gboolean
+gvc_mixer_event_role_change_is_muted (GvcMixerStream *stream,
+                                      gboolean        is_muted)
+{
+        return update_settings (GVC_MIXER_EVENT_ROLE (stream),
+                                is_muted, NULL);
+}
+
+static gboolean
+gvc_mixer_event_role_set_device (GvcMixerEventRole *role,
+                                 const char        *device)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_EVENT_ROLE (role), FALSE);
+
+        g_free (role->priv->device);
+        role->priv->device = g_strdup (device);
+        g_object_notify (G_OBJECT (role), "device");
+
+        return TRUE;
+}
+
+static void
+gvc_mixer_event_role_set_property (GObject       *object,
+                                   guint          prop_id,
+                                   const GValue  *value,
+                                   GParamSpec    *pspec)
+{
+        GvcMixerEventRole *self = GVC_MIXER_EVENT_ROLE (object);
+
+        switch (prop_id) {
+        case PROP_DEVICE:
+                gvc_mixer_event_role_set_device (self, g_value_get_string (value));
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static void
+gvc_mixer_event_role_get_property (GObject     *object,
+                                   guint        prop_id,
+                                   GValue      *value,
+                                   GParamSpec  *pspec)
+{
+        GvcMixerEventRole *self = GVC_MIXER_EVENT_ROLE (object);
+
+        switch (prop_id) {
+        case PROP_DEVICE:
+                g_value_set_string (value, self->priv->device);
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static GObject *
+gvc_mixer_event_role_constructor (GType                  type,
+                                  guint                  n_construct_properties,
+                                  GObjectConstructParam *construct_params)
+{
+        GObject       *object;
+        GvcMixerEventRole *self;
+
+        object = G_OBJECT_CLASS (gvc_mixer_event_role_parent_class)->constructor (type, n_construct_properties, construct_params);
+
+        self = GVC_MIXER_EVENT_ROLE (object);
+
+        return object;
+}
+
+static void
+gvc_mixer_event_role_class_init (GvcMixerEventRoleClass *klass)
+{
+        GObjectClass        *object_class = G_OBJECT_CLASS (klass);
+        GvcMixerStreamClass *stream_class = GVC_MIXER_STREAM_CLASS (klass);
+
+        object_class->constructor = gvc_mixer_event_role_constructor;
+        object_class->finalize = gvc_mixer_event_role_finalize;
+        object_class->set_property = gvc_mixer_event_role_set_property;
+        object_class->get_property = gvc_mixer_event_role_get_property;
+
+        stream_class->push_volume = gvc_mixer_event_role_push_volume;
+        stream_class->change_is_muted = gvc_mixer_event_role_change_is_muted;
+
+        g_object_class_install_property (object_class,
+                                         PROP_DEVICE,
+                                         g_param_spec_string ("device",
+                                                              "Device",
+                                                              "Device",
+                                                              NULL,
+                                                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+
+        g_type_class_add_private (klass, sizeof (GvcMixerEventRolePrivate));
+}
+
+static void
+gvc_mixer_event_role_init (GvcMixerEventRole *event_role)
+{
+        event_role->priv = GVC_MIXER_EVENT_ROLE_GET_PRIVATE (event_role);
+
+}
+
+static void
+gvc_mixer_event_role_finalize (GObject *object)
+{
+        GvcMixerEventRole *mixer_event_role;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_MIXER_EVENT_ROLE (object));
+
+        mixer_event_role = GVC_MIXER_EVENT_ROLE (object);
+
+        g_return_if_fail (mixer_event_role->priv != NULL);
+
+        g_free (mixer_event_role->priv->device);
+
+        G_OBJECT_CLASS (gvc_mixer_event_role_parent_class)->finalize (object);
+}
+
+/**
+ * gvc_mixer_event_role_new: (skip)
+ *
+ * @context:
+ * @index:
+ * @channel_map:
+ *
+ * Returns:
+ */
+GvcMixerStream *
+gvc_mixer_event_role_new (pa_context *context,
+                          const char *device,
+                          GvcChannelMap *channel_map)
+{
+        GObject *object;
+
+        object = g_object_new (GVC_TYPE_MIXER_EVENT_ROLE,
+                               "pa-context", context,
+                               "index", 0,
+                               "device", device,
+                               "channel-map", channel_map,
+                               NULL);
+
+        return GVC_MIXER_STREAM (object);
+}

src/gvc/gvc-mixer-event-role.h

@@ -0,0 +1,57 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_EVENT_ROLE_H
+#define __GVC_MIXER_EVENT_ROLE_H
+
+#include <glib-object.h>
+#include "gvc-mixer-stream.h"
+
+G_BEGIN_DECLS
+
+#define GVC_TYPE_MIXER_EVENT_ROLE         (gvc_mixer_event_role_get_type ())
+#define GVC_MIXER_EVENT_ROLE(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GVC_TYPE_MIXER_EVENT_ROLE, GvcMixerEventRole))
+#define GVC_MIXER_EVENT_ROLE_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), GVC_TYPE_MIXER_EVENT_ROLE, GvcMixerEventRoleClass))
+#define GVC_IS_MIXER_EVENT_ROLE(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GVC_TYPE_MIXER_EVENT_ROLE))
+#define GVC_IS_MIXER_EVENT_ROLE_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GVC_TYPE_MIXER_EVENT_ROLE))
+#define GVC_MIXER_EVENT_ROLE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GVC_TYPE_MIXER_EVENT_ROLE, GvcMixerEventRoleClass))
+
+typedef struct GvcMixerEventRolePrivate GvcMixerEventRolePrivate;
+
+typedef struct
+{
+        GvcMixerStream            parent;
+        GvcMixerEventRolePrivate *priv;
+} GvcMixerEventRole;
+
+typedef struct
+{
+        GvcMixerStreamClass parent_class;
+} GvcMixerEventRoleClass;
+
+GType               gvc_mixer_event_role_get_type      (void);
+
+GvcMixerStream *    gvc_mixer_event_role_new           (pa_context    *context,
+                                                        const char    *device,
+                                                        GvcChannelMap *channel_map);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_EVENT_ROLE_H */

src/gvc/gvc-mixer-sink-input.c

@@ -0,0 +1,199 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 William Jon McCann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n-lib.h>
+
+#include <pulse/pulseaudio.h>
+
+#include "gvc-mixer-sink-input.h"
+#include "gvc-mixer-stream-private.h"
+#include "gvc-channel-map-private.h"
+
+#define GVC_MIXER_SINK_INPUT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_MIXER_SINK_INPUT, GvcMixerSinkInputPrivate))
+
+struct GvcMixerSinkInputPrivate
+{
+        gpointer dummy;
+};
+
+static void     gvc_mixer_sink_input_class_init (GvcMixerSinkInputClass *klass);
+static void     gvc_mixer_sink_input_init       (GvcMixerSinkInput      *mixer_sink_input);
+static void     gvc_mixer_sink_input_finalize   (GObject                *object);
+static void     gvc_mixer_sink_input_dispose    (GObject                *object);
+
+G_DEFINE_TYPE (GvcMixerSinkInput, gvc_mixer_sink_input, GVC_TYPE_MIXER_STREAM)
+
+static gboolean
+gvc_mixer_sink_input_push_volume (GvcMixerStream *stream, gpointer *op)
+{
+        pa_operation        *o;
+        guint                index;
+        const GvcChannelMap *map;
+        pa_context          *context;
+        const pa_cvolume    *cv;
+        guint                num_channels;
+
+        index = gvc_mixer_stream_get_index (stream);
+
+        map = gvc_mixer_stream_get_channel_map (stream);
+        num_channels = gvc_channel_map_get_num_channels (map);
+
+        cv = gvc_channel_map_get_cvolume(map);
+
+        context = gvc_mixer_stream_get_pa_context (stream);
+
+        o = pa_context_set_sink_input_volume (context,
+                                              index,
+                                              cv,
+                                              NULL,
+                                              NULL);
+
+        if (o == NULL) {
+                g_warning ("pa_context_set_sink_input_volume() failed");
+                return FALSE;
+        }
+
+        *op = o;
+
+        return TRUE;
+}
+
+static gboolean
+gvc_mixer_sink_input_change_is_muted (GvcMixerStream *stream,
+                                      gboolean        is_muted)
+{
+        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_input_mute (context,
+                                            index,
+                                            is_muted,
+                                            NULL,
+                                            NULL);
+
+        if (o == NULL) {
+                g_warning ("pa_context_set_sink_input_mute_by_index() failed");
+                return FALSE;
+        }
+
+        pa_operation_unref(o);
+
+        return TRUE;
+}
+
+static GObject *
+gvc_mixer_sink_input_constructor (GType                  type,
+                                  guint                  n_construct_properties,
+                                  GObjectConstructParam *construct_params)
+{
+        GObject       *object;
+        GvcMixerSinkInput *self;
+
+        object = G_OBJECT_CLASS (gvc_mixer_sink_input_parent_class)->constructor (type, n_construct_properties, construct_params);
+
+        self = GVC_MIXER_SINK_INPUT (object);
+
+        return object;
+}
+
+static void
+gvc_mixer_sink_input_class_init (GvcMixerSinkInputClass *klass)
+{
+        GObjectClass        *object_class = G_OBJECT_CLASS (klass);
+        GvcMixerStreamClass *stream_class = GVC_MIXER_STREAM_CLASS (klass);
+
+        object_class->constructor = gvc_mixer_sink_input_constructor;
+        object_class->dispose = gvc_mixer_sink_input_dispose;
+        object_class->finalize = gvc_mixer_sink_input_finalize;
+
+        stream_class->push_volume = gvc_mixer_sink_input_push_volume;
+        stream_class->change_is_muted = gvc_mixer_sink_input_change_is_muted;
+
+        g_type_class_add_private (klass, sizeof (GvcMixerSinkInputPrivate));
+}
+
+static void
+gvc_mixer_sink_input_init (GvcMixerSinkInput *sink_input)
+{
+        sink_input->priv = GVC_MIXER_SINK_INPUT_GET_PRIVATE (sink_input);
+}
+
+static void
+gvc_mixer_sink_input_dispose (GObject *object)
+{
+        GvcMixerSinkInput *mixer_sink_input;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_MIXER_SINK_INPUT (object));
+
+        mixer_sink_input = GVC_MIXER_SINK_INPUT (object);
+
+        G_OBJECT_CLASS (gvc_mixer_sink_input_parent_class)->dispose (object);
+}
+
+static void
+gvc_mixer_sink_input_finalize (GObject *object)
+{
+        GvcMixerSinkInput *mixer_sink_input;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_MIXER_SINK_INPUT (object));
+
+        mixer_sink_input = GVC_MIXER_SINK_INPUT (object);
+
+        g_return_if_fail (mixer_sink_input->priv != NULL);
+        G_OBJECT_CLASS (gvc_mixer_sink_input_parent_class)->finalize (object);
+}
+
+/**
+ * gvc_mixer_sink_input_new: (skip)
+ *
+ * @context:
+ * @index:
+ * @channel_map:
+ *
+ * Returns:
+ */
+GvcMixerStream *
+gvc_mixer_sink_input_new (pa_context    *context,
+                          guint          index,
+                          GvcChannelMap *channel_map)
+{
+        GObject *object;
+
+        object = g_object_new (GVC_TYPE_MIXER_SINK_INPUT,
+                               "pa-context", context,
+                               "index", index,
+                               "channel-map", channel_map,
+                               NULL);
+
+        return GVC_MIXER_STREAM (object);
+}

src/gvc/gvc-mixer-sink-input.h

@@ -0,0 +1,57 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_SINK_INPUT_H
+#define __GVC_MIXER_SINK_INPUT_H
+
+#include <glib-object.h>
+#include "gvc-mixer-stream.h"
+
+G_BEGIN_DECLS
+
+#define GVC_TYPE_MIXER_SINK_INPUT         (gvc_mixer_sink_input_get_type ())
+#define GVC_MIXER_SINK_INPUT(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GVC_TYPE_MIXER_SINK_INPUT, GvcMixerSinkInput))
+#define GVC_MIXER_SINK_INPUT_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), GVC_TYPE_MIXER_SINK_INPUT, GvcMixerSinkInputClass))
+#define GVC_IS_MIXER_SINK_INPUT(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GVC_TYPE_MIXER_SINK_INPUT))
+#define GVC_IS_MIXER_SINK_INPUT_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GVC_TYPE_MIXER_SINK_INPUT))
+#define GVC_MIXER_SINK_INPUT_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GVC_TYPE_MIXER_SINK_INPUT, GvcMixerSinkInputClass))
+
+typedef struct GvcMixerSinkInputPrivate GvcMixerSinkInputPrivate;
+
+typedef struct
+{
+        GvcMixerStream            parent;
+        GvcMixerSinkInputPrivate *priv;
+} GvcMixerSinkInput;
+
+typedef struct
+{
+        GvcMixerStreamClass parent_class;
+} GvcMixerSinkInputClass;
+
+GType               gvc_mixer_sink_input_get_type      (void);
+
+GvcMixerStream *    gvc_mixer_sink_input_new           (pa_context    *context,
+                                                        guint          index,
+                                                        GvcChannelMap *map);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_SINK_INPUT_H */

src/gvc/gvc-mixer-sink.c

@@ -0,0 +1,231 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 William Jon McCann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n-lib.h>
+
+#include <pulse/pulseaudio.h>
+
+#include "gvc-mixer-sink.h"
+#include "gvc-mixer-stream-private.h"
+#include "gvc-channel-map-private.h"
+
+#define GVC_MIXER_SINK_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_MIXER_SINK, GvcMixerSinkPrivate))
+
+struct GvcMixerSinkPrivate
+{
+        gpointer dummy;
+};
+
+static void     gvc_mixer_sink_class_init (GvcMixerSinkClass *klass);
+static void     gvc_mixer_sink_init       (GvcMixerSink      *mixer_sink);
+static void     gvc_mixer_sink_finalize   (GObject           *object);
+static void     gvc_mixer_sink_dispose    (GObject           *object);
+
+G_DEFINE_TYPE (GvcMixerSink, gvc_mixer_sink, GVC_TYPE_MIXER_STREAM)
+
+static gboolean
+gvc_mixer_sink_push_volume (GvcMixerStream *stream, gpointer *op)
+{
+        pa_operation        *o;
+        guint                index;
+        const GvcChannelMap *map;
+        pa_context          *context;
+        const pa_cvolume    *cv;
+
+        index = gvc_mixer_stream_get_index (stream);
+
+        map = gvc_mixer_stream_get_channel_map (stream);
+
+        /* set the volume */
+        cv = gvc_channel_map_get_cvolume(map);
+
+        context = gvc_mixer_stream_get_pa_context (stream);
+
+        o = pa_context_set_sink_volume_by_index (context,
+                                                 index,
+                                                 cv,
+                                                 NULL,
+                                                 NULL);
+
+        if (o == NULL) {
+                g_warning ("pa_context_set_sink_volume_by_index() failed: %s", pa_strerror(pa_context_errno(context)));
+                return FALSE;
+        }
+
+        *op = o;
+
+        return TRUE;
+}
+
+static gboolean
+gvc_mixer_sink_change_is_muted (GvcMixerStream *stream,
+                                gboolean        is_muted)
+{
+        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_mute_by_index (context,
+                                               index,
+                                               is_muted,
+                                               NULL,
+                                               NULL);
+
+        if (o == NULL) {
+                g_warning ("pa_context_set_sink_mute_by_index() failed: %s", pa_strerror(pa_context_errno(context)));
+                return FALSE;
+        }
+
+        pa_operation_unref(o);
+
+        return TRUE;
+}
+
+static gboolean
+gvc_mixer_sink_change_port (GvcMixerStream *stream,
+                            const char     *port)
+{
+#if PA_MICRO > 15
+        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;
+#else
+        return FALSE;
+#endif /* PA_MICRO > 15 */
+}
+
+static GObject *
+gvc_mixer_sink_constructor (GType                  type,
+                            guint                  n_construct_properties,
+                            GObjectConstructParam *construct_params)
+{
+        GObject      *object;
+        GvcMixerSink *self;
+
+        object = G_OBJECT_CLASS (gvc_mixer_sink_parent_class)->constructor (type, n_construct_properties, construct_params);
+
+        self = GVC_MIXER_SINK (object);
+
+        return object;
+}
+
+static void
+gvc_mixer_sink_class_init (GvcMixerSinkClass *klass)
+{
+        GObjectClass        *object_class = G_OBJECT_CLASS (klass);
+        GvcMixerStreamClass *stream_class = GVC_MIXER_STREAM_CLASS (klass);
+
+        object_class->constructor = gvc_mixer_sink_constructor;
+        object_class->dispose = gvc_mixer_sink_dispose;
+        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));
+}
+
+static void
+gvc_mixer_sink_init (GvcMixerSink *sink)
+{
+        sink->priv = GVC_MIXER_SINK_GET_PRIVATE (sink);
+}
+
+static void
+gvc_mixer_sink_dispose (GObject *object)
+{
+        GvcMixerSink *mixer_sink;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_MIXER_SINK (object));
+
+        mixer_sink = GVC_MIXER_SINK (object);
+
+        G_OBJECT_CLASS (gvc_mixer_sink_parent_class)->dispose (object);
+}
+
+static void
+gvc_mixer_sink_finalize (GObject *object)
+{
+        GvcMixerSink *mixer_sink;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_MIXER_SINK (object));
+
+        mixer_sink = GVC_MIXER_SINK (object);
+
+        g_return_if_fail (mixer_sink->priv != NULL);
+        G_OBJECT_CLASS (gvc_mixer_sink_parent_class)->finalize (object);
+}
+
+/**
+ * gvc_mixer_sink_new: (skip)
+ *
+ * @context:
+ * @index:
+ * @channel_map:
+ *
+ * Returns:
+ */
+GvcMixerStream *
+gvc_mixer_sink_new (pa_context    *context,
+                    guint          index,
+                    GvcChannelMap *channel_map)
+
+{
+        GObject *object;
+
+        object = g_object_new (GVC_TYPE_MIXER_SINK,
+                               "pa-context", context,
+                               "index", index,
+                               "channel-map", channel_map,
+                               NULL);
+
+        return GVC_MIXER_STREAM (object);
+}

src/gvc/gvc-mixer-sink.h

@@ -0,0 +1,57 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_SINK_H
+#define __GVC_MIXER_SINK_H
+
+#include <glib-object.h>
+#include "gvc-mixer-stream.h"
+
+G_BEGIN_DECLS
+
+#define GVC_TYPE_MIXER_SINK         (gvc_mixer_sink_get_type ())
+#define GVC_MIXER_SINK(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GVC_TYPE_MIXER_SINK, GvcMixerSink))
+#define GVC_MIXER_SINK_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), GVC_TYPE_MIXER_SINK, GvcMixerSinkClass))
+#define GVC_IS_MIXER_SINK(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GVC_TYPE_MIXER_SINK))
+#define GVC_IS_MIXER_SINK_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GVC_TYPE_MIXER_SINK))
+#define GVC_MIXER_SINK_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GVC_TYPE_MIXER_SINK, GvcMixerSinkClass))
+
+typedef struct GvcMixerSinkPrivate GvcMixerSinkPrivate;
+
+typedef struct
+{
+        GvcMixerStream       parent;
+        GvcMixerSinkPrivate *priv;
+} GvcMixerSink;
+
+typedef struct
+{
+        GvcMixerStreamClass parent_class;
+} GvcMixerSinkClass;
+
+GType               gvc_mixer_sink_get_type            (void);
+
+GvcMixerStream *    gvc_mixer_sink_new                 (pa_context    *context,
+                                                        guint          index,
+                                                        GvcChannelMap *map);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_SINK_H */

src/gvc/gvc-mixer-source-output.c

@@ -0,0 +1,137 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 William Jon McCann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n-lib.h>
+
+#include <pulse/pulseaudio.h>
+
+#include "gvc-mixer-source-output.h"
+
+#define GVC_MIXER_SOURCE_OUTPUT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_MIXER_SOURCE_OUTPUT, GvcMixerSourceOutputPrivate))
+
+struct GvcMixerSourceOutputPrivate
+{
+        gpointer dummy;
+};
+
+static void     gvc_mixer_source_output_class_init (GvcMixerSourceOutputClass *klass);
+static void     gvc_mixer_source_output_init       (GvcMixerSourceOutput      *mixer_source_output);
+static void     gvc_mixer_source_output_finalize   (GObject            *object);
+
+G_DEFINE_TYPE (GvcMixerSourceOutput, gvc_mixer_source_output, GVC_TYPE_MIXER_STREAM)
+
+static gboolean
+gvc_mixer_source_output_push_volume (GvcMixerStream *stream, gpointer *op)
+{
+        /* FIXME: */
+        *op = NULL;
+        return TRUE;
+}
+
+static gboolean
+gvc_mixer_source_output_change_is_muted (GvcMixerStream *stream,
+                                      gboolean        is_muted)
+{
+        /* FIXME: */
+        return TRUE;
+}
+
+static GObject *
+gvc_mixer_source_output_constructor (GType                  type,
+                                  guint                  n_construct_properties,
+                                  GObjectConstructParam *construct_params)
+{
+        GObject       *object;
+        GvcMixerSourceOutput *self;
+
+        object = G_OBJECT_CLASS (gvc_mixer_source_output_parent_class)->constructor (type, n_construct_properties, construct_params);
+
+        self = GVC_MIXER_SOURCE_OUTPUT (object);
+
+        return object;
+}
+
+static void
+gvc_mixer_source_output_class_init (GvcMixerSourceOutputClass *klass)
+{
+        GObjectClass        *object_class = G_OBJECT_CLASS (klass);
+        GvcMixerStreamClass *stream_class = GVC_MIXER_STREAM_CLASS (klass);
+
+        object_class->constructor = gvc_mixer_source_output_constructor;
+        object_class->finalize = gvc_mixer_source_output_finalize;
+
+        stream_class->push_volume = gvc_mixer_source_output_push_volume;
+        stream_class->change_is_muted = gvc_mixer_source_output_change_is_muted;
+
+        g_type_class_add_private (klass, sizeof (GvcMixerSourceOutputPrivate));
+}
+
+static void
+gvc_mixer_source_output_init (GvcMixerSourceOutput *source_output)
+{
+        source_output->priv = GVC_MIXER_SOURCE_OUTPUT_GET_PRIVATE (source_output);
+
+}
+
+static void
+gvc_mixer_source_output_finalize (GObject *object)
+{
+        GvcMixerSourceOutput *mixer_source_output;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_MIXER_SOURCE_OUTPUT (object));
+
+        mixer_source_output = GVC_MIXER_SOURCE_OUTPUT (object);
+
+        g_return_if_fail (mixer_source_output->priv != NULL);
+        G_OBJECT_CLASS (gvc_mixer_source_output_parent_class)->finalize (object);
+}
+
+/**
+ * gvc_mixer_source_output_new: (skip)
+ *
+ * @context:
+ * @index:
+ * @channel_map:
+ *
+ * Returns:
+ */
+GvcMixerStream *
+gvc_mixer_source_output_new (pa_context    *context,
+                             guint          index,
+                             GvcChannelMap *channel_map)
+{
+        GObject *object;
+
+        object = g_object_new (GVC_TYPE_MIXER_SOURCE_OUTPUT,
+                               "pa-context", context,
+                               "index", index,
+                               "channel-map", channel_map,
+                               NULL);
+
+        return GVC_MIXER_STREAM (object);
+}

src/gvc/gvc-mixer-source-output.h

@@ -0,0 +1,57 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_SOURCE_OUTPUT_H
+#define __GVC_MIXER_SOURCE_OUTPUT_H
+
+#include <glib-object.h>
+#include "gvc-mixer-stream.h"
+
+G_BEGIN_DECLS
+
+#define GVC_TYPE_MIXER_SOURCE_OUTPUT         (gvc_mixer_source_output_get_type ())
+#define GVC_MIXER_SOURCE_OUTPUT(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GVC_TYPE_MIXER_SOURCE_OUTPUT, GvcMixerSourceOutput))
+#define GVC_MIXER_SOURCE_OUTPUT_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), GVC_TYPE_MIXER_SOURCE_OUTPUT, GvcMixerSourceOutputClass))
+#define GVC_IS_MIXER_SOURCE_OUTPUT(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GVC_TYPE_MIXER_SOURCE_OUTPUT))
+#define GVC_IS_MIXER_SOURCE_OUTPUT_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GVC_TYPE_MIXER_SOURCE_OUTPUT))
+#define GVC_MIXER_SOURCE_OUTPUT_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GVC_TYPE_MIXER_SOURCE_OUTPUT, GvcMixerSourceOutputClass))
+
+typedef struct GvcMixerSourceOutputPrivate GvcMixerSourceOutputPrivate;
+
+typedef struct
+{
+        GvcMixerStream               parent;
+        GvcMixerSourceOutputPrivate *priv;
+} GvcMixerSourceOutput;
+
+typedef struct
+{
+        GvcMixerStreamClass parent_class;
+} GvcMixerSourceOutputClass;
+
+GType               gvc_mixer_source_output_get_type      (void);
+
+GvcMixerStream *    gvc_mixer_source_output_new           (pa_context    *context,
+                                                           guint          index,
+                                                           GvcChannelMap *map);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_SOURCE_OUTPUT_H */

src/gvc/gvc-mixer-source.c

@@ -0,0 +1,231 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 William Jon McCann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n-lib.h>
+
+#include <pulse/pulseaudio.h>
+
+#include "gvc-mixer-source.h"
+#include "gvc-mixer-stream-private.h"
+#include "gvc-channel-map-private.h"
+
+#define GVC_MIXER_SOURCE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_MIXER_SOURCE, GvcMixerSourcePrivate))
+
+struct GvcMixerSourcePrivate
+{
+        gpointer dummy;
+};
+
+static void     gvc_mixer_source_class_init (GvcMixerSourceClass *klass);
+static void     gvc_mixer_source_init       (GvcMixerSource      *mixer_source);
+static void     gvc_mixer_source_finalize   (GObject            *object);
+static void     gvc_mixer_source_dispose    (GObject           *object);
+
+G_DEFINE_TYPE (GvcMixerSource, gvc_mixer_source, GVC_TYPE_MIXER_STREAM)
+
+static gboolean
+gvc_mixer_source_push_volume (GvcMixerStream *stream, gpointer *op)
+{
+        pa_operation        *o;
+        guint                index;
+        const GvcChannelMap *map;
+        pa_context          *context;
+        const pa_cvolume    *cv;
+
+        index = gvc_mixer_stream_get_index (stream);
+
+        map = gvc_mixer_stream_get_channel_map (stream);
+
+        /* set the volume */
+        cv = gvc_channel_map_get_cvolume (map);
+
+        context = gvc_mixer_stream_get_pa_context (stream);
+
+        o = pa_context_set_source_volume_by_index (context,
+                                                   index,
+                                                   cv,
+                                                   NULL,
+                                                   NULL);
+
+        if (o == NULL) {
+                g_warning ("pa_context_set_source_volume_by_index() failed: %s", pa_strerror(pa_context_errno(context)));
+                return FALSE;
+        }
+
+        *op = o;
+
+        return TRUE;
+}
+
+static gboolean
+gvc_mixer_source_change_is_muted (GvcMixerStream *stream,
+                                gboolean        is_muted)
+{
+        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_mute_by_index (context,
+                                                 index,
+                                                 is_muted,
+                                                 NULL,
+                                                 NULL);
+
+        if (o == NULL) {
+                g_warning ("pa_context_set_source_mute_by_index() failed: %s", pa_strerror(pa_context_errno(context)));
+                return FALSE;
+        }
+
+        pa_operation_unref(o);
+
+        return TRUE;
+}
+
+static gboolean
+gvc_mixer_source_change_port (GvcMixerStream *stream,
+                              const char     *port)
+{
+#if PA_MICRO > 15
+        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;
+#else
+        return FALSE;
+#endif /* PA_MICRO > 15 */
+}
+
+static GObject *
+gvc_mixer_source_constructor (GType                  type,
+                            guint                  n_construct_properties,
+                            GObjectConstructParam *construct_params)
+{
+        GObject        *object;
+        GvcMixerSource *self;
+
+        object = G_OBJECT_CLASS (gvc_mixer_source_parent_class)->constructor (type, n_construct_properties, construct_params);
+
+        self = GVC_MIXER_SOURCE (object);
+
+        return object;
+}
+
+static void
+gvc_mixer_source_class_init (GvcMixerSourceClass *klass)
+{
+        GObjectClass        *object_class = G_OBJECT_CLASS (klass);
+        GvcMixerStreamClass *stream_class = GVC_MIXER_STREAM_CLASS (klass);
+
+        object_class->constructor = gvc_mixer_source_constructor;
+        object_class->dispose = gvc_mixer_source_dispose;
+        object_class->finalize = gvc_mixer_source_finalize;
+
+        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));
+}
+
+static void
+gvc_mixer_source_init (GvcMixerSource *source)
+{
+        source->priv = GVC_MIXER_SOURCE_GET_PRIVATE (source);
+}
+
+static void
+gvc_mixer_source_dispose (GObject *object)
+{
+        GvcMixerSource *mixer_source;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_MIXER_SOURCE (object));
+
+        mixer_source = GVC_MIXER_SOURCE (object);
+
+        G_OBJECT_CLASS (gvc_mixer_source_parent_class)->dispose (object);
+}
+
+static void
+gvc_mixer_source_finalize (GObject *object)
+{
+        GvcMixerSource *mixer_source;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_MIXER_SOURCE (object));
+
+        mixer_source = GVC_MIXER_SOURCE (object);
+
+        g_return_if_fail (mixer_source->priv != NULL);
+        G_OBJECT_CLASS (gvc_mixer_source_parent_class)->finalize (object);
+}
+
+/**
+ * gvc_mixer_source_new: (skip)
+ *
+ * @context:
+ * @index:
+ * @channel_map:
+ *
+ * Returns:
+ */
+GvcMixerStream *
+gvc_mixer_source_new (pa_context    *context,
+                      guint          index,
+                      GvcChannelMap *channel_map)
+
+{
+        GObject *object;
+
+        object = g_object_new (GVC_TYPE_MIXER_SOURCE,
+                               "pa-context", context,
+                               "index", index,
+                               "channel-map", channel_map,
+                               NULL);
+
+        return GVC_MIXER_STREAM (object);
+}

src/gvc/gvc-mixer-source.h

@@ -0,0 +1,57 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_SOURCE_H
+#define __GVC_MIXER_SOURCE_H
+
+#include <glib-object.h>
+#include "gvc-mixer-stream.h"
+
+G_BEGIN_DECLS
+
+#define GVC_TYPE_MIXER_SOURCE         (gvc_mixer_source_get_type ())
+#define GVC_MIXER_SOURCE(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GVC_TYPE_MIXER_SOURCE, GvcMixerSource))
+#define GVC_MIXER_SOURCE_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), GVC_TYPE_MIXER_SOURCE, GvcMixerSourceClass))
+#define GVC_IS_MIXER_SOURCE(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GVC_TYPE_MIXER_SOURCE))
+#define GVC_IS_MIXER_SOURCE_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GVC_TYPE_MIXER_SOURCE))
+#define GVC_MIXER_SOURCE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GVC_TYPE_MIXER_SOURCE, GvcMixerSourceClass))
+
+typedef struct GvcMixerSourcePrivate GvcMixerSourcePrivate;
+
+typedef struct
+{
+        GvcMixerStream       parent;
+        GvcMixerSourcePrivate *priv;
+} GvcMixerSource;
+
+typedef struct
+{
+        GvcMixerStreamClass parent_class;
+} GvcMixerSourceClass;
+
+GType               gvc_mixer_source_get_type            (void);
+
+GvcMixerStream *    gvc_mixer_source_new               (pa_context    *context,
+                                                        guint          index,
+                                                        GvcChannelMap *map);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_SOURCE_H */

src/gvc/gvc-mixer-stream-private.h

@@ -0,0 +1,34 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_STREAM_PRIVATE_H
+#define __GVC_MIXER_STREAM_PRIVATE_H
+
+#include <glib-object.h>
+
+#include "gvc-channel-map.h"
+
+G_BEGIN_DECLS
+
+pa_context *        gvc_mixer_stream_get_pa_context  (GvcMixerStream *stream);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_STREAM_PRIVATE_H */

src/gvc/gvc-mixer-stream.c

@@ -0,0 +1,944 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 William Jon McCann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n-lib.h>
+
+#include <pulse/pulseaudio.h>
+
+#include "gvc-mixer-stream.h"
+#include "gvc-mixer-stream-private.h"
+#include "gvc-channel-map-private.h"
+
+#define GVC_MIXER_STREAM_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_MIXER_STREAM, GvcMixerStreamPrivate))
+
+static guint32 stream_serial = 1;
+
+struct GvcMixerStreamPrivate
+{
+        pa_context    *pa_context;
+        guint          id;
+        guint          index;
+        gint           card_index;
+        GvcChannelMap *channel_map;
+        char          *name;
+        char          *description;
+        char          *application_id;
+        char          *icon_name;
+        gboolean       is_muted;
+        gboolean       can_decibel;
+        gboolean       is_event_stream;
+        gboolean       is_virtual;
+        pa_volume_t    base_volume;
+        pa_operation  *change_volume_op;
+        char          *port;
+        char          *human_port;
+        GList         *ports;
+};
+
+enum
+{
+        PROP_0,
+        PROP_ID,
+        PROP_PA_CONTEXT,
+        PROP_CHANNEL_MAP,
+        PROP_INDEX,
+        PROP_NAME,
+        PROP_DESCRIPTION,
+        PROP_APPLICATION_ID,
+        PROP_ICON_NAME,
+        PROP_VOLUME,
+        PROP_DECIBEL,
+        PROP_IS_MUTED,
+        PROP_CAN_DECIBEL,
+        PROP_IS_EVENT_STREAM,
+        PROP_IS_VIRTUAL,
+        PROP_CARD_INDEX,
+        PROP_PORT,
+};
+
+static void     gvc_mixer_stream_class_init (GvcMixerStreamClass *klass);
+static void     gvc_mixer_stream_init       (GvcMixerStream      *mixer_stream);
+static void     gvc_mixer_stream_finalize   (GObject            *object);
+
+G_DEFINE_ABSTRACT_TYPE (GvcMixerStream, gvc_mixer_stream, G_TYPE_OBJECT)
+
+static guint32
+get_next_stream_serial (void)
+{
+        guint32 serial;
+
+        serial = stream_serial++;
+
+        if ((gint32)stream_serial < 0) {
+                stream_serial = 1;
+        }
+
+        return serial;
+}
+
+pa_context *
+gvc_mixer_stream_get_pa_context (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), 0);
+        return stream->priv->pa_context;
+}
+
+guint
+gvc_mixer_stream_get_index (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), 0);
+        return stream->priv->index;
+}
+
+guint
+gvc_mixer_stream_get_id (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), 0);
+        return stream->priv->id;
+}
+
+const GvcChannelMap *
+gvc_mixer_stream_get_channel_map (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), NULL);
+        return stream->priv->channel_map;
+}
+
+/**
+ * gvc_mixer_stream_get_volume:
+ *
+ * @stream:
+ *
+ * Returns: (type guint32) (transfer none):
+ */
+pa_volume_t
+gvc_mixer_stream_get_volume (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), 0);
+
+        return (pa_volume_t) gvc_channel_map_get_volume(stream->priv->channel_map)[VOLUME];
+}
+
+gdouble
+gvc_mixer_stream_get_decibel (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), 0);
+
+        return pa_sw_volume_to_dB(
+                        (pa_volume_t) gvc_channel_map_get_volume(stream->priv->channel_map)[VOLUME]);
+}
+
+/**
+ * gvc_mixer_stream_set_volume:
+ *
+ * @stream:
+ * @volume: (type guint32):
+ *
+ * Returns:
+ */
+gboolean
+gvc_mixer_stream_set_volume (GvcMixerStream *stream,
+                              pa_volume_t     volume)
+{
+        pa_cvolume cv;
+
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        cv = *gvc_channel_map_get_cvolume(stream->priv->channel_map);
+        pa_cvolume_scale(&cv, volume);
+
+        if (!pa_cvolume_equal(gvc_channel_map_get_cvolume(stream->priv->channel_map), &cv)) {
+                gvc_channel_map_volume_changed(stream->priv->channel_map, &cv, FALSE);
+                g_object_notify (G_OBJECT (stream), "volume");
+                return TRUE;
+        }
+
+        return FALSE;
+}
+
+gboolean
+gvc_mixer_stream_set_decibel (GvcMixerStream *stream,
+                              gdouble         db)
+{
+        pa_cvolume cv;
+
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        cv = *gvc_channel_map_get_cvolume(stream->priv->channel_map);
+        pa_cvolume_scale(&cv, pa_sw_volume_from_dB(db));
+
+        if (!pa_cvolume_equal(gvc_channel_map_get_cvolume(stream->priv->channel_map), &cv)) {
+                gvc_channel_map_volume_changed(stream->priv->channel_map, &cv, FALSE);
+                g_object_notify (G_OBJECT (stream), "volume");
+        }
+
+        return TRUE;
+}
+
+gboolean
+gvc_mixer_stream_get_is_muted  (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+        return stream->priv->is_muted;
+}
+
+gboolean
+gvc_mixer_stream_get_can_decibel (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+        return stream->priv->can_decibel;
+}
+
+gboolean
+gvc_mixer_stream_set_is_muted  (GvcMixerStream *stream,
+                                gboolean        is_muted)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        if (is_muted != stream->priv->is_muted) {
+                stream->priv->is_muted = is_muted;
+                g_object_notify (G_OBJECT (stream), "is-muted");
+        }
+
+        return TRUE;
+}
+
+gboolean
+gvc_mixer_stream_set_can_decibel  (GvcMixerStream *stream,
+                                   gboolean        can_decibel)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        if (can_decibel != stream->priv->can_decibel) {
+                stream->priv->can_decibel = can_decibel;
+                g_object_notify (G_OBJECT (stream), "can-decibel");
+        }
+
+        return TRUE;
+}
+
+const char *
+gvc_mixer_stream_get_name (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), NULL);
+        return stream->priv->name;
+}
+
+const char *
+gvc_mixer_stream_get_description (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), NULL);
+        return stream->priv->description;
+}
+
+gboolean
+gvc_mixer_stream_set_name (GvcMixerStream *stream,
+                           const char     *name)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        g_free (stream->priv->name);
+        stream->priv->name = g_strdup (name);
+        g_object_notify (G_OBJECT (stream), "name");
+
+        return TRUE;
+}
+
+gboolean
+gvc_mixer_stream_set_description (GvcMixerStream *stream,
+                                  const char     *description)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        g_free (stream->priv->description);
+        stream->priv->description = g_strdup (description);
+        g_object_notify (G_OBJECT (stream), "description");
+
+        return TRUE;
+}
+
+gboolean
+gvc_mixer_stream_is_event_stream (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        return stream->priv->is_event_stream;
+}
+
+gboolean
+gvc_mixer_stream_set_is_event_stream (GvcMixerStream *stream,
+                                      gboolean is_event_stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        stream->priv->is_event_stream = is_event_stream;
+        g_object_notify (G_OBJECT (stream), "is-event-stream");
+
+        return TRUE;
+}
+
+gboolean
+gvc_mixer_stream_is_virtual (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        return stream->priv->is_virtual;
+}
+
+gboolean
+gvc_mixer_stream_set_is_virtual (GvcMixerStream *stream,
+                                 gboolean is_virtual)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        stream->priv->is_virtual = is_virtual;
+        g_object_notify (G_OBJECT (stream), "is-virtual");
+
+        return TRUE;
+}
+
+const char *
+gvc_mixer_stream_get_application_id (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), NULL);
+        return stream->priv->application_id;
+}
+
+gboolean
+gvc_mixer_stream_set_application_id (GvcMixerStream *stream,
+                                     const char *application_id)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        g_free (stream->priv->application_id);
+        stream->priv->application_id = g_strdup (application_id);
+        g_object_notify (G_OBJECT (stream), "application-id");
+
+        return TRUE;
+}
+
+static void
+on_channel_map_volume_changed (GvcChannelMap  *channel_map,
+                               gboolean        set,
+                               GvcMixerStream *stream)
+{
+        if (set == TRUE)
+                gvc_mixer_stream_push_volume (stream);
+
+        g_object_notify (G_OBJECT (stream), "volume");
+}
+
+static gboolean
+gvc_mixer_stream_set_channel_map (GvcMixerStream *stream,
+                                  GvcChannelMap  *channel_map)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        if (channel_map != NULL) {
+                g_object_ref (channel_map);
+        }
+
+        if (stream->priv->channel_map != NULL) {
+                g_signal_handlers_disconnect_by_func (stream->priv->channel_map,
+                                                      on_channel_map_volume_changed,
+                                                      stream);
+                g_object_unref (stream->priv->channel_map);
+        }
+
+        stream->priv->channel_map = channel_map;
+
+        if (stream->priv->channel_map != NULL) {
+                g_signal_connect (stream->priv->channel_map,
+                                  "volume-changed",
+                                  G_CALLBACK (on_channel_map_volume_changed),
+                                  stream);
+
+                g_object_notify (G_OBJECT (stream), "channel-map");
+        }
+
+        return TRUE;
+}
+
+const char *
+gvc_mixer_stream_get_icon_name (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), NULL);
+        return stream->priv->icon_name;
+}
+
+gboolean
+gvc_mixer_stream_set_icon_name (GvcMixerStream *stream,
+                                const char     *icon_name)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        g_free (stream->priv->icon_name);
+        stream->priv->icon_name = g_strdup (icon_name);
+        g_object_notify (G_OBJECT (stream), "icon-name");
+
+        return TRUE;
+}
+
+/**
+ * gvc_mixer_stream_get_base_volume:
+ *
+ * @stream:
+ *
+ * Returns: (type guint32) (transfer none):
+ */
+pa_volume_t
+gvc_mixer_stream_get_base_volume (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), 0);
+
+        return stream->priv->base_volume;
+}
+
+/**
+ * gvc_mixer_stream_set_base_volume:
+ *
+ * @stream:
+ * @base_volume: (type guint32):
+ *
+ * Returns:
+ */
+gboolean
+gvc_mixer_stream_set_base_volume (GvcMixerStream *stream,
+                                  pa_volume_t base_volume)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        stream->priv->base_volume = base_volume;
+
+        return TRUE;
+}
+
+const GvcMixerStreamPort *
+gvc_mixer_stream_get_port (GvcMixerStream *stream)
+{
+        GList *l;
+
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), NULL);
+        g_return_val_if_fail (stream->priv->ports != NULL, NULL);
+
+        for (l = stream->priv->ports; l != NULL; l = l->next) {
+                GvcMixerStreamPort *p = l->data;
+                if (g_strcmp0 (stream->priv->port, p->port) == 0) {
+                        return p;
+                }
+        }
+
+        g_assert_not_reached ();
+
+        return NULL;
+}
+
+gboolean
+gvc_mixer_stream_set_port (GvcMixerStream *stream,
+                           const char     *port)
+{
+        GList *l;
+
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+        g_return_val_if_fail (stream->priv->ports != NULL, FALSE);
+
+        g_free (stream->priv->port);
+        stream->priv->port = g_strdup (port);
+
+        g_free (stream->priv->human_port);
+        stream->priv->human_port = NULL;
+
+        for (l = stream->priv->ports; l != NULL; l = l->next) {
+                GvcMixerStreamPort *p = l->data;
+                if (g_str_equal (stream->priv->port, p->port)) {
+                        stream->priv->human_port = g_strdup (p->human_port);
+                        break;
+                }
+        }
+
+        g_object_notify (G_OBJECT (stream), "port");
+
+        return TRUE;
+}
+
+gboolean
+gvc_mixer_stream_change_port (GvcMixerStream *stream,
+                              const char     *port)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+        return GVC_MIXER_STREAM_GET_CLASS (stream)->change_port (stream, port);
+}
+
+const GList *
+gvc_mixer_stream_get_ports (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+        return stream->priv->ports;
+}
+
+static int
+sort_ports (GvcMixerStreamPort *a,
+            GvcMixerStreamPort *b)
+{
+        if (a->priority == b->priority)
+                return 0;
+        if (a->priority > b->priority)
+                return 1;
+        return -1;
+}
+
+gboolean
+gvc_mixer_stream_set_ports (GvcMixerStream *stream,
+                            GList          *ports)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+        g_return_val_if_fail (stream->priv->ports == NULL, FALSE);
+
+        stream->priv->ports = g_list_sort (ports, (GCompareFunc) sort_ports);
+
+        return TRUE;
+}
+
+gint
+gvc_mixer_stream_get_card_index (GvcMixerStream *stream)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), PA_INVALID_INDEX);
+        return stream->priv->card_index;
+}
+
+gboolean
+gvc_mixer_stream_set_card_index (GvcMixerStream *stream,
+                                 gint            card_index)
+{
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        stream->priv->card_index = card_index;
+        g_object_notify (G_OBJECT (stream), "card-index");
+
+        return TRUE;
+}
+
+static void
+gvc_mixer_stream_set_property (GObject       *object,
+                               guint          prop_id,
+                               const GValue  *value,
+                               GParamSpec    *pspec)
+{
+        GvcMixerStream *self = GVC_MIXER_STREAM (object);
+
+        switch (prop_id) {
+        case PROP_PA_CONTEXT:
+                self->priv->pa_context = g_value_get_pointer (value);
+                break;
+        case PROP_INDEX:
+                self->priv->index = g_value_get_ulong (value);
+                break;
+        case PROP_ID:
+                self->priv->id = g_value_get_ulong (value);
+                break;
+        case PROP_CHANNEL_MAP:
+                gvc_mixer_stream_set_channel_map (self, g_value_get_object (value));
+                break;
+        case PROP_NAME:
+                gvc_mixer_stream_set_name (self, g_value_get_string (value));
+                break;
+        case PROP_DESCRIPTION:
+                gvc_mixer_stream_set_description (self, g_value_get_string (value));
+                break;
+        case PROP_APPLICATION_ID:
+                gvc_mixer_stream_set_application_id (self, g_value_get_string (value));
+                break;
+        case PROP_ICON_NAME:
+                gvc_mixer_stream_set_icon_name (self, g_value_get_string (value));
+                break;
+        case PROP_VOLUME:
+                gvc_mixer_stream_set_volume (self, g_value_get_ulong (value));
+                break;
+        case PROP_DECIBEL:
+                gvc_mixer_stream_set_decibel (self, g_value_get_double (value));
+                break;
+        case PROP_IS_MUTED:
+                gvc_mixer_stream_set_is_muted (self, g_value_get_boolean (value));
+                break;
+        case PROP_IS_EVENT_STREAM:
+                gvc_mixer_stream_set_is_event_stream (self, g_value_get_boolean (value));
+                break;
+        case PROP_IS_VIRTUAL:
+                gvc_mixer_stream_set_is_virtual (self, g_value_get_boolean (value));
+                break;
+        case PROP_CAN_DECIBEL:
+                gvc_mixer_stream_set_can_decibel (self, g_value_get_boolean (value));
+                break;
+        case PROP_PORT:
+                gvc_mixer_stream_set_port (self, g_value_get_string (value));
+                break;
+        case PROP_CARD_INDEX:
+                self->priv->card_index = g_value_get_long (value);
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static void
+gvc_mixer_stream_get_property (GObject     *object,
+                               guint        prop_id,
+                               GValue      *value,
+                               GParamSpec  *pspec)
+{
+        GvcMixerStream *self = GVC_MIXER_STREAM (object);
+
+        switch (prop_id) {
+        case PROP_PA_CONTEXT:
+                g_value_set_pointer (value, self->priv->pa_context);
+                break;
+        case PROP_INDEX:
+                g_value_set_ulong (value, self->priv->index);
+                break;
+        case PROP_ID:
+                g_value_set_ulong (value, self->priv->id);
+                break;
+        case PROP_CHANNEL_MAP:
+                g_value_set_object (value, self->priv->channel_map);
+                break;
+        case PROP_NAME:
+                g_value_set_string (value, self->priv->name);
+                break;
+        case PROP_DESCRIPTION:
+                g_value_set_string (value, self->priv->description);
+                break;
+        case PROP_APPLICATION_ID:
+                g_value_set_string (value, self->priv->application_id);
+                break;
+        case PROP_ICON_NAME:
+                g_value_set_string (value, self->priv->icon_name);
+                break;
+        case PROP_VOLUME:
+                g_value_set_ulong (value,
+                                   pa_cvolume_max(gvc_channel_map_get_cvolume(self->priv->channel_map)));
+                break;
+        case PROP_DECIBEL:
+                g_value_set_double (value,
+                                    pa_sw_volume_to_dB(pa_cvolume_max(gvc_channel_map_get_cvolume(self->priv->channel_map))));
+                break;
+        case PROP_IS_MUTED:
+                g_value_set_boolean (value, self->priv->is_muted);
+                break;
+        case PROP_IS_EVENT_STREAM:
+                g_value_set_boolean (value, self->priv->is_event_stream);
+                break;
+        case PROP_IS_VIRTUAL:
+                g_value_set_boolean (value, self->priv->is_virtual);
+                break;
+        case PROP_CAN_DECIBEL:
+                g_value_set_boolean (value, self->priv->can_decibel);
+                break;
+        case PROP_PORT:
+                g_value_set_string (value, self->priv->port);
+                break;
+        case PROP_CARD_INDEX:
+                g_value_set_long (value, self->priv->card_index);
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static GObject *
+gvc_mixer_stream_constructor (GType                  type,
+                              guint                  n_construct_properties,
+                              GObjectConstructParam *construct_params)
+{
+        GObject       *object;
+        GvcMixerStream *self;
+
+        object = G_OBJECT_CLASS (gvc_mixer_stream_parent_class)->constructor (type, n_construct_properties, construct_params);
+
+        self = GVC_MIXER_STREAM (object);
+
+        self->priv->id = get_next_stream_serial ();
+
+        return object;
+}
+
+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;
+}
+
+static gboolean
+gvc_mixer_stream_real_change_is_muted (GvcMixerStream *stream,
+                                       gboolean        is_muted)
+{
+        return FALSE;
+}
+
+gboolean
+gvc_mixer_stream_push_volume (GvcMixerStream *stream)
+{
+        pa_operation *op;
+        gboolean ret;
+
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+
+        if (stream->priv->is_event_stream != FALSE)
+                return TRUE;
+
+        g_debug ("Pushing new volume to stream '%s' (%s)",
+                 stream->priv->description, stream->priv->name);
+
+        ret = GVC_MIXER_STREAM_GET_CLASS (stream)->push_volume (stream, (gpointer *) &op);
+        if (ret) {
+                if (stream->priv->change_volume_op != NULL)
+                        pa_operation_unref (stream->priv->change_volume_op);
+                stream->priv->change_volume_op = op;
+        }
+        return ret;
+}
+
+gboolean
+gvc_mixer_stream_change_is_muted (GvcMixerStream *stream,
+                                  gboolean        is_muted)
+{
+        gboolean ret;
+        g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
+        ret = GVC_MIXER_STREAM_GET_CLASS (stream)->change_is_muted (stream, is_muted);
+        return ret;
+}
+
+gboolean
+gvc_mixer_stream_is_running (GvcMixerStream *stream)
+{
+        if (stream->priv->change_volume_op == NULL)
+                return FALSE;
+
+        if ((pa_operation_get_state(stream->priv->change_volume_op) == PA_OPERATION_RUNNING))
+                return TRUE;
+
+        pa_operation_unref(stream->priv->change_volume_op);
+        stream->priv->change_volume_op = NULL;
+
+        return FALSE;
+}
+
+static void
+gvc_mixer_stream_class_init (GvcMixerStreamClass *klass)
+{
+        GObjectClass   *gobject_class = G_OBJECT_CLASS (klass);
+
+        gobject_class->constructor = gvc_mixer_stream_constructor;
+        gobject_class->finalize = gvc_mixer_stream_finalize;
+        gobject_class->set_property = gvc_mixer_stream_set_property;
+        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,
+                                         PROP_INDEX,
+                                         g_param_spec_ulong ("index",
+                                                             "Index",
+                                                             "The index for this stream",
+                                                             0, G_MAXULONG, 0,
+                                                             G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
+        g_object_class_install_property (gobject_class,
+                                         PROP_ID,
+                                         g_param_spec_ulong ("id",
+                                                             "id",
+                                                             "The id for this stream",
+                                                             0, G_MAXULONG, 0,
+                                                             G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
+        g_object_class_install_property (gobject_class,
+                                         PROP_CHANNEL_MAP,
+                                         g_param_spec_object ("channel-map",
+                                                              "channel map",
+                                                              "The channel map for this stream",
+                                                              GVC_TYPE_CHANNEL_MAP,
+                                                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_PA_CONTEXT,
+                                         g_param_spec_pointer ("pa-context",
+                                                               "PulseAudio context",
+                                                               "The PulseAudio context for this stream",
+                                                               G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
+        g_object_class_install_property (gobject_class,
+                                         PROP_VOLUME,
+                                         g_param_spec_ulong ("volume",
+                                                             "Volume",
+                                                             "The volume for this stream",
+                                                             0, G_MAXULONG, 0,
+                                                             G_PARAM_READWRITE));
+        g_object_class_install_property (gobject_class,
+                                         PROP_DECIBEL,
+                                         g_param_spec_double ("decibel",
+                                                              "Decibel",
+                                                              "The decibel level for this stream",
+                                                              -G_MAXDOUBLE, G_MAXDOUBLE, 0,
+                                                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+
+        g_object_class_install_property (gobject_class,
+                                         PROP_NAME,
+                                         g_param_spec_string ("name",
+                                                              "Name",
+                                                              "Name to display for this stream",
+                                                              NULL,
+                                                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_DESCRIPTION,
+                                         g_param_spec_string ("description",
+                                                              "Description",
+                                                              "Description to display for this stream",
+                                                              NULL,
+                                                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_APPLICATION_ID,
+                                         g_param_spec_string ("application-id",
+                                                              "Application identifier",
+                                                              "Application identifier for this stream",
+                                                              NULL,
+                                                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_ICON_NAME,
+                                         g_param_spec_string ("icon-name",
+                                                              "Icon Name",
+                                                              "Name of icon to display for this stream",
+                                                              NULL,
+                                                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_IS_MUTED,
+                                         g_param_spec_boolean ("is-muted",
+                                                               "is muted",
+                                                               "Whether stream is muted",
+                                                               FALSE,
+                                                               G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_CAN_DECIBEL,
+                                         g_param_spec_boolean ("can-decibel",
+                                                               "can decibel",
+                                                               "Whether stream volume can be converted to decibel units",
+                                                               FALSE,
+                                                               G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_IS_EVENT_STREAM,
+                                         g_param_spec_boolean ("is-event-stream",
+                                                               "is event stream",
+                                                               "Whether stream's role is to play an event",
+                                                               FALSE,
+                                                               G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_IS_VIRTUAL,
+                                         g_param_spec_boolean ("is-virtual",
+                                                               "is virtual stream",
+                                                               "Whether the stream is virtual",
+                                                               FALSE,
+                                                               G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_object_class_install_property (gobject_class,
+                                         PROP_PORT,
+                                         g_param_spec_string ("port",
+                                                              "Port",
+                                                              "The name of the current port for this stream",
+                                                              NULL,
+                                                              G_PARAM_READWRITE));
+        g_object_class_install_property (gobject_class,
+                                         PROP_CARD_INDEX,
+                                         g_param_spec_long ("card-index",
+                                                             "Card index",
+                                                             "The index of the card for this stream",
+                                                             PA_INVALID_INDEX, G_MAXLONG, PA_INVALID_INDEX,
+                                                             G_PARAM_READWRITE|G_PARAM_CONSTRUCT));
+        g_type_class_add_private (klass, sizeof (GvcMixerStreamPrivate));
+}
+
+static void
+gvc_mixer_stream_init (GvcMixerStream *stream)
+{
+        stream->priv = GVC_MIXER_STREAM_GET_PRIVATE (stream);
+}
+
+static void
+free_port (GvcMixerStreamPort *p)
+{
+        g_free (p->port);
+        g_free (p->human_port);
+        g_free (p);
+}
+
+static void
+gvc_mixer_stream_finalize (GObject *object)
+{
+        GvcMixerStream *mixer_stream;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_MIXER_STREAM (object));
+
+        mixer_stream = GVC_MIXER_STREAM (object);
+
+        g_return_if_fail (mixer_stream->priv != NULL);
+
+        g_object_unref (mixer_stream->priv->channel_map);
+        mixer_stream->priv->channel_map = NULL;
+
+        g_free (mixer_stream->priv->name);
+        mixer_stream->priv->name = NULL;
+
+        g_free (mixer_stream->priv->description);
+        mixer_stream->priv->description = NULL;
+
+        g_free (mixer_stream->priv->application_id);
+        mixer_stream->priv->application_id = NULL;
+
+        g_free (mixer_stream->priv->icon_name);
+        mixer_stream->priv->icon_name = NULL;
+
+        g_free (mixer_stream->priv->port);
+        mixer_stream->priv->port = NULL;
+
+        g_free (mixer_stream->priv->human_port);
+        mixer_stream->priv->human_port = NULL;
+
+        g_list_foreach (mixer_stream->priv->ports, (GFunc) free_port, NULL);
+        g_list_free (mixer_stream->priv->ports);
+        mixer_stream->priv->ports = NULL;
+
+       if (mixer_stream->priv->change_volume_op) {
+               pa_operation_unref(mixer_stream->priv->change_volume_op);
+               mixer_stream->priv->change_volume_op = NULL;
+       }
+
+        G_OBJECT_CLASS (gvc_mixer_stream_parent_class)->finalize (object);
+}

src/gvc/gvc-mixer-stream.h

@@ -0,0 +1,125 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_MIXER_STREAM_H
+#define __GVC_MIXER_STREAM_H
+
+#include <glib-object.h>
+#include "gvc-pulseaudio-fake.h"
+#include "gvc-channel-map.h"
+
+G_BEGIN_DECLS
+
+#define GVC_TYPE_MIXER_STREAM         (gvc_mixer_stream_get_type ())
+#define GVC_MIXER_STREAM(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GVC_TYPE_MIXER_STREAM, GvcMixerStream))
+#define GVC_MIXER_STREAM_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), GVC_TYPE_MIXER_STREAM, GvcMixerStreamClass))
+#define GVC_IS_MIXER_STREAM(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GVC_TYPE_MIXER_STREAM))
+#define GVC_IS_MIXER_STREAM_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GVC_TYPE_MIXER_STREAM))
+#define GVC_MIXER_STREAM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GVC_TYPE_MIXER_STREAM, GvcMixerStreamClass))
+
+typedef struct GvcMixerStreamPrivate GvcMixerStreamPrivate;
+
+typedef struct
+{
+        GObject                parent;
+        GvcMixerStreamPrivate *priv;
+} GvcMixerStream;
+
+typedef struct
+{
+        GObjectClass           parent_class;
+
+        /* vtable */
+        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
+{
+        char *port;
+        char *human_port;
+        guint priority;
+} GvcMixerStreamPort;
+
+GType               gvc_mixer_stream_get_type        (void);
+
+guint               gvc_mixer_stream_get_index       (GvcMixerStream *stream);
+guint               gvc_mixer_stream_get_id          (GvcMixerStream *stream);
+const GvcChannelMap *gvc_mixer_stream_get_channel_map(GvcMixerStream *stream);
+const GvcMixerStreamPort *gvc_mixer_stream_get_port  (GvcMixerStream *stream);
+const GList *       gvc_mixer_stream_get_ports       (GvcMixerStream *stream);
+gboolean            gvc_mixer_stream_change_port     (GvcMixerStream *stream,
+                                                      const char     *port);
+
+pa_volume_t         gvc_mixer_stream_get_volume      (GvcMixerStream *stream);
+gdouble             gvc_mixer_stream_get_decibel     (GvcMixerStream *stream);
+gboolean            gvc_mixer_stream_push_volume     (GvcMixerStream *stream);
+pa_volume_t         gvc_mixer_stream_get_base_volume (GvcMixerStream *stream);
+
+gboolean            gvc_mixer_stream_get_is_muted    (GvcMixerStream *stream);
+gboolean            gvc_mixer_stream_get_can_decibel (GvcMixerStream *stream);
+gboolean            gvc_mixer_stream_change_is_muted (GvcMixerStream *stream,
+                                                      gboolean        is_muted);
+gboolean            gvc_mixer_stream_is_running      (GvcMixerStream *stream);
+const char *        gvc_mixer_stream_get_name        (GvcMixerStream *stream);
+const char *        gvc_mixer_stream_get_icon_name   (GvcMixerStream *stream);
+const char *        gvc_mixer_stream_get_description (GvcMixerStream *stream);
+const char *        gvc_mixer_stream_get_application_id (GvcMixerStream *stream);
+gboolean            gvc_mixer_stream_is_event_stream (GvcMixerStream *stream);
+gboolean            gvc_mixer_stream_is_virtual      (GvcMixerStream *stream);
+gint                gvc_mixer_stream_get_card_index  (GvcMixerStream *stream);
+
+/* private */
+gboolean            gvc_mixer_stream_set_volume      (GvcMixerStream *stream,
+                                                      pa_volume_t     volume);
+gboolean            gvc_mixer_stream_set_decibel     (GvcMixerStream *stream,
+                                                      gdouble         db);
+gboolean            gvc_mixer_stream_set_is_muted    (GvcMixerStream *stream,
+                                                      gboolean        is_muted);
+gboolean            gvc_mixer_stream_set_can_decibel (GvcMixerStream *stream,
+                                                      gboolean        can_decibel);
+gboolean            gvc_mixer_stream_set_name        (GvcMixerStream *stream,
+                                                      const char     *name);
+gboolean            gvc_mixer_stream_set_description (GvcMixerStream *stream,
+                                                      const char     *description);
+gboolean            gvc_mixer_stream_set_icon_name   (GvcMixerStream *stream,
+                                                      const char     *name);
+gboolean            gvc_mixer_stream_set_is_event_stream (GvcMixerStream *stream,
+                                                          gboolean is_event_stream);
+gboolean            gvc_mixer_stream_set_is_virtual  (GvcMixerStream *stream,
+                                                      gboolean is_event_stream);
+gboolean            gvc_mixer_stream_set_application_id (GvcMixerStream *stream,
+                                                         const char *application_id);
+gboolean            gvc_mixer_stream_set_base_volume (GvcMixerStream *stream,
+                                                      pa_volume_t     base_volume);
+gboolean            gvc_mixer_stream_set_port        (GvcMixerStream *stream,
+                                                      const char     *port);
+gboolean            gvc_mixer_stream_set_ports       (GvcMixerStream *stream,
+                                                      GList          *ports);
+gboolean            gvc_mixer_stream_set_card_index  (GvcMixerStream *stream,
+                                                      gint            card_index);
+
+G_END_DECLS
+
+#endif /* __GVC_MIXER_STREAM_H */

src/gvc/gvc-pulseaudio-fake.h

@@ -0,0 +1,34 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __GVC_PULSEAUDIO_FAKE_H
+#define __GVC_PULSEAUDIO_FAKE_H
+
+#ifdef WITH_INTROSPECTION
+
+#ifndef PA_API_VERSION
+typedef int pa_channel_position_t;
+typedef guint32 pa_volume_t;
+typedef gpointer pa_context;
+#endif /* PA_API_VERSION */
+
+#endif /* WITH_INTROSPECTION */
+
+#endif /* __GVC_PULSEAUDIO_FAKE_H */