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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <pulse/pulseaudio.h>
#include "gvc-channel-map.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);
}
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);
}
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