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/* GStreamer
* Copyright (C) 2011 David A. Schleef <ds@schleef.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
* Boston, MA 02110-1335, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstintersurface.h"
static GList *list;
static GMutex mutex;
GstInterSurface *
gst_inter_surface_get (const char *name)
{
GList *g;
GstInterSurface *surface;
g_mutex_lock (&mutex);
for (g = list; g; g = g_list_next (g)) {
surface = g->data;
if (strcmp (name, surface->name) == 0) {
surface->ref_count++;
g_mutex_unlock (&mutex);
return surface;
}
}
surface = g_malloc0 (sizeof (GstInterSurface));
surface->ref_count = 1;
surface->name = g_strdup (name);
g_mutex_init (&surface->mutex);
surface->audio_adapter = gst_adapter_new ();
list = g_list_append (list, surface);
g_mutex_unlock (&mutex);
return surface;
}
void
gst_inter_surface_unref (GstInterSurface * surface)
{
/* Mutex needed here, otherwise refcount might become 0
* and someone else requests the same surface again before
* we remove it from the list */
g_mutex_lock (&mutex);
if ((--surface->ref_count) == 0) {
GList *g;
for (g = list; g; g = g_list_next (g)) {
GstInterSurface *tmp = g->data;
if (strcmp (tmp->name, surface->name) == 0) {
list = g_list_delete_link (list, g);
break;
}
}
g_mutex_clear (&surface->mutex);
gst_buffer_replace (&surface->video_buffer, NULL);
gst_buffer_replace (&surface->sub_buffer, NULL);
gst_object_unref (surface->audio_adapter);
g_free (surface);
}
g_mutex_unlock (&mutex);
}
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