libgnome-volume-control/gvc-mixer-event-role.c

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/* -*- 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_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;
const GvcChannelMap *map;
pa_context *context;
pa_ext_stream_restore_info info;
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)
{
/* Apply change straight away so that we don't get a race with
* gvc_mixer_event_role_push_volume().
* See https://bugs.freedesktop.org/show_bug.cgi?id=51413 */
gvc_mixer_stream_set_is_muted (stream, 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 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->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:
* @device:
* @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);
}