libmks/lib/mks-speaker.c

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/*
* mks-speaker.c
*
* Copyright 2023 Christian Hergert <chergert@redhat.com>
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
2023-06-01 11:04:35 +00:00
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "config.h"
#include <glib/gstdio.h>
#include "mks-device-private.h"
#include "mks-qemu.h"
#include "mks-speaker.h"
#include "mks-util-private.h"
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/**
* MksSpeaker:
*
* A virtualized QEMU speaker.
*/
struct _MksSpeaker
{
MksDevice parent_instance;
MksQemuAudio *audio;
MksQemuAudioOutListener *listener;
GDBusConnection *connection;
guint muted : 1;
};
struct _MksSpeakerClass
{
MksDeviceClass parent_class;
};
G_DEFINE_FINAL_TYPE (MksSpeaker, mks_speaker, MKS_TYPE_DEVICE)
enum {
PROP_0,
PROP_MUTED,
N_PROPS
};
static GParamSpec *properties [N_PROPS];
static gboolean
mks_speaker_handle_init (MksSpeaker *self,
GDBusMethodInvocation *invocation,
guint64 id,
guchar bits,
gboolean is_signed,
gboolean is_float,
guint freq,
guchar nchannels,
guint bytes_per_frame,
guint bytes_per_second,
gboolean be)
{
MKS_ENTRY;
g_assert (MKS_IS_SPEAKER (self));
g_assert (G_IS_DBUS_METHOD_INVOCATION (invocation));
MKS_RETURN (FALSE);
}
static gboolean
mks_speaker_handle_fini (MksSpeaker *self,
GDBusMethodInvocation *invocation,
guint64 id)
{
MKS_ENTRY;
g_assert (MKS_IS_SPEAKER (self));
g_assert (G_IS_DBUS_METHOD_INVOCATION (invocation));
MKS_RETURN (FALSE);
}
static gboolean
mks_speaker_handle_set_enabled (MksSpeaker *self,
GDBusMethodInvocation *invocation,
guint64 id,
gboolean enbled)
{
MKS_ENTRY;
g_assert (MKS_IS_SPEAKER (self));
g_assert (G_IS_DBUS_METHOD_INVOCATION (invocation));
MKS_RETURN (FALSE);
}
static gboolean
mks_speaker_handle_set_volume (MksSpeaker *self,
GDBusMethodInvocation *invocation,
guint64 id,
gboolean mute,
GVariant *volume)
{
MKS_ENTRY;
g_assert (MKS_IS_SPEAKER (self));
g_assert (G_IS_DBUS_METHOD_INVOCATION (invocation));
MKS_RETURN (FALSE);
}
static gboolean
mks_speaker_handle_write (MksSpeaker *self,
GDBusMethodInvocation *invocation,
guint64 id,
GVariant *data)
{
MKS_ENTRY;
g_assert (MKS_IS_SPEAKER (self));
g_assert (G_IS_DBUS_METHOD_INVOCATION (invocation));
MKS_RETURN (FALSE);
}
static void
mks_speaker_register_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
MksQemuAudio *audio = (MksQemuAudio *)object;
g_autoptr(MksSpeaker) self = user_data;
g_autoptr(GError) error = NULL;
g_assert (MKS_QEMU_IS_AUDIO (audio));
g_assert (G_IS_ASYNC_RESULT (result));
g_assert (MKS_IS_SPEAKER (self));
if (!mks_qemu_audio_call_register_out_listener_finish (audio, NULL, result, &error))
g_warning ("Failed to register audio out listener: %s", error->message);
}
static void
mks_speaker_connection_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
g_autoptr(GDBusConnection) connection = NULL;
g_autoptr(MksSpeaker) self = user_data;
g_autoptr(GUnixFDList) fd_list = NULL;
g_autoptr(GError) error = NULL;
g_autofd int peer_fd = -1;
g_assert (G_IS_ASYNC_RESULT (result));
g_assert (MKS_IS_SPEAKER (self));
if (!(connection = mks_socketpair_connection_new_finish (result, &peer_fd, &error)))
{
g_warning ("Failed to create socketpair D-Bus connection: %s", error->message);
return;
}
g_set_object (&self->connection, connection);
self->listener = mks_qemu_audio_out_listener_skeleton_new ();
g_signal_connect_object (self->listener,
"handle-init",
G_CALLBACK (mks_speaker_handle_init),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (self->listener,
"handle-fini",
G_CALLBACK (mks_speaker_handle_fini),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (self->listener,
"handle-set-enabled",
G_CALLBACK (mks_speaker_handle_set_enabled),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (self->listener,
"handle-set-volume",
G_CALLBACK (mks_speaker_handle_set_volume),
self,
G_CONNECT_SWAPPED);
g_signal_connect_object (self->listener,
"handle-write",
G_CALLBACK (mks_speaker_handle_write),
self,
G_CONNECT_SWAPPED);
if (!g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (self->listener),
connection,
"/org/qemu/Display1/AudioOutListener",
&error))
{
g_warning ("Failed to export AudioOutListener on D-Bus connection: %s",
error->message);
return;
}
fd_list = g_unix_fd_list_new_from_array (&peer_fd, 1);
peer_fd = -1;
mks_qemu_audio_call_register_out_listener (self->audio,
g_variant_new_handle (0),
fd_list,
NULL,
mks_speaker_register_cb,
g_object_ref (self));
}
static gboolean
mks_speaker_setup (MksDevice *device,
MksQemuObject *object)
{
MksSpeaker *self = (MksSpeaker *)object;
g_assert (MKS_IS_SPEAKER (self));
g_assert (MKS_QEMU_IS_OBJECT (object));
if (MKS_QEMU_IS_AUDIO (object))
{
g_set_object (&self->audio, MKS_QEMU_AUDIO (object));
mks_socketpair_connection_new (G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT,
NULL,
mks_speaker_connection_cb,
g_object_ref (self));
return TRUE;
}
return FALSE;
}
static void
mks_speaker_dispose (GObject *object)
{
MksSpeaker *self = (MksSpeaker *)object;
if (self->listener != NULL)
{
g_dbus_interface_skeleton_unexport (G_DBUS_INTERFACE_SKELETON (self->listener));
g_clear_object (&self->listener);
}
g_clear_object (&self->connection);
g_clear_object (&self->audio);
G_OBJECT_CLASS (mks_speaker_parent_class)->dispose (object);
}
static void
mks_speaker_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MksSpeaker *self = MKS_SPEAKER (object);
switch (prop_id)
{
case PROP_MUTED:
g_value_set_boolean (value, mks_speaker_get_muted (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
mks_speaker_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MksSpeaker *self = MKS_SPEAKER (object);
switch (prop_id)
{
case PROP_MUTED:
mks_speaker_set_muted (self, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
mks_speaker_class_init (MksSpeakerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
MksDeviceClass *device_class = MKS_DEVICE_CLASS (klass);
object_class->dispose = mks_speaker_dispose;
object_class->get_property = mks_speaker_get_property;
object_class->set_property = mks_speaker_set_property;
device_class->setup = mks_speaker_setup;
/**
* MksSpeaker:muted:
*
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* If audio received from the instance is dropped and
* the remote sound device should attempt to be set as muted.
*/
properties [PROP_MUTED] =
g_param_spec_boolean ("muted", NULL, NULL,
FALSE,
(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
g_object_class_install_properties (object_class, N_PROPS, properties);
}
static void
mks_speaker_init (MksSpeaker *self)
{
}
/**
* mks_speaker_get_muted:
* @self: a #MksSpeaker
*
* Gets if the speaker is muted.
*
* Returns: %TRUE if the #MksSpeaker is muted.
*/
gboolean
mks_speaker_get_muted (MksSpeaker *self)
{
g_return_val_if_fail (MKS_IS_SPEAKER (self), FALSE);
return self->muted;
}
/**
* mks_speaker_set_muted:
* @self: a #MksSpeaker
* @muted: if the speaker should be muted
*
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* Mute or un-mute the speaker.
*/
void
mks_speaker_set_muted (MksSpeaker *self,
gboolean muted)
{
g_return_if_fail (MKS_IS_SPEAKER (self));
muted = !!muted;
if (self->muted != muted)
{
self->muted = muted;
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_MUTED]);
}
}