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/* BSE - Better Sound Engine
* Copyright (C) 2002 Tim Janik
*
* 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.
*
* A copy of the GNU Lesser General Public License should ship along
* with this library; if not, see http://www.gnu.org/copyleft/.
*/
#include "bseeditablesample.h"
#include "bsemain.h"
#include "bsestorage.h"
#include "gsldatahandle.h"
/* --- structures --- */
typedef struct _Notify Notify;
struct _Notify
{
Notify *next;
BseEditableSample *esample;
};
/* --- prototypes --- */
static void bse_editable_sample_init (BseEditableSample *self);
static void bse_editable_sample_class_init (BseEditableSampleClass *class);
static void bse_editable_sample_dispose (GObject *object);
static void bse_editable_sample_finalize (GObject *object);
/* --- variables --- */
static gpointer parent_class = NULL;
static guint signal_changed = 0;
static Notify *changed_notify_list = NULL;
/* --- functions --- */
BSE_BUILTIN_TYPE (BseEditableSample)
{
static const GTypeInfo editable_sample_info = {
sizeof (BseEditableSampleClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) bse_editable_sample_class_init,
(GClassFinalizeFunc) NULL,
NULL /* class_editable */,
sizeof (BseEditableSample),
0 /* n_preallocs */,
(GInstanceInitFunc) bse_editable_sample_init,
};
g_assert (BSE_EDITABLE_SAMPLE_FLAGS_USHIFT < BSE_OBJECT_FLAGS_MAX_SHIFT);
return bse_type_register_static (BSE_TYPE_ITEM,
"BseEditableSample",
"Editable sample type",
__FILE__, __LINE__,
&editable_sample_info);
}
static void
bse_editable_sample_class_init (BseEditableSampleClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
BseObjectClass *object_class = BSE_OBJECT_CLASS (class);
parent_class = g_type_class_peek_parent (class);
gobject_class->dispose = bse_editable_sample_dispose;
gobject_class->finalize = bse_editable_sample_finalize;
signal_changed = bse_object_class_add_signal (object_class, "changed",
G_TYPE_NONE, 0);
}
static void
bse_editable_sample_init (BseEditableSample *self)
{
self->wchunk = NULL;
}
static void
bse_editable_sample_dispose (GObject *object)
{
BseEditableSample *self = BSE_EDITABLE_SAMPLE (object);
bse_editable_sample_set_wchunk (self, NULL);
/* chain parent class' handler */
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
bse_editable_sample_finalize (GObject *object)
{
BseEditableSample *self = BSE_EDITABLE_SAMPLE (object);
Notify *notify, *last = NULL;
for (notify = changed_notify_list; notify; )
{
if (notify->esample == self)
{
Notify *tmp;
if (last)
last->next = notify->next;
else
changed_notify_list = notify->next;
tmp = notify;
notify = notify->next;
g_free (tmp);
}
else
{
last = notify;
notify = last->next;
}
}
/* chain parent class' handler */
G_OBJECT_CLASS (parent_class)->finalize (object);
g_return_if_fail (self->wchunk == NULL);
}
static gboolean
changed_notify_handler (gpointer editable)
{
BSE_THREADS_ENTER ();
while (changed_notify_list)
{
Notify *notify = changed_notify_list;
changed_notify_list = notify->next;
if (!BSE_OBJECT_DISPOSING (notify->esample))
g_signal_emit (notify->esample, signal_changed, 0);
g_free (notify);
}
BSE_THREADS_LEAVE ();
return FALSE;
}
static void
changed_notify_add (BseEditableSample *self)
{
Notify *notify;
if (!changed_notify_list)
bse_idle_notify (changed_notify_handler, NULL);
for (notify = changed_notify_list; notify; notify = notify->next)
if (notify->esample == self)
return;
notify = g_new (Notify, 1);
notify->esample = self;
notify->next = changed_notify_list;
changed_notify_list = notify;
}
void
bse_editable_sample_set_wchunk (BseEditableSample *self,
GslWaveChunk *wchunk)
{
g_return_if_fail (BSE_IS_EDITABLE_SAMPLE (self));
if (self->wchunk)
{
if (self->open_count)
gsl_wave_chunk_close (self->wchunk);
self->open_count = 0;
gsl_wave_chunk_unref (self->wchunk);
}
self->wchunk = wchunk ? gsl_wave_chunk_ref (wchunk) : NULL;
changed_notify_add (self);
}
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