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84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/* GStreamer
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* Copyright (C) 2011 David A. Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
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* Boston, MA 02110-1335, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstintersurface.h"
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static GList *list;
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static GMutex mutex;
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GstInterSurface *
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gst_inter_surface_get (const char *name)
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{
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GList *g;
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GstInterSurface *surface;
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g_mutex_lock (&mutex);
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for (g = list; g; g = g_list_next (g)) {
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surface = g->data;
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if (strcmp (name, surface->name) == 0) {
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surface->ref_count++;
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g_mutex_unlock (&mutex);
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return surface;
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}
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}
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surface = g_malloc0 (sizeof (GstInterSurface));
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surface->ref_count = 1;
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surface->name = g_strdup (name);
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g_mutex_init (&surface->mutex);
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surface->audio_adapter = gst_adapter_new ();
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list = g_list_append (list, surface);
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g_mutex_unlock (&mutex);
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return surface;
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}
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void
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gst_inter_surface_unref (GstInterSurface * surface)
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{
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/* Mutex needed here, otherwise refcount might become 0
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* and someone else requests the same surface again before
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* we remove it from the list */
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g_mutex_lock (&mutex);
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if ((--surface->ref_count) == 0) {
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GList *g;
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for (g = list; g; g = g_list_next (g)) {
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GstInterSurface *tmp = g->data;
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if (strcmp (tmp->name, surface->name) == 0) {
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list = g_list_delete_link (list, g);
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break;
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}
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}
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g_mutex_clear (&surface->mutex);
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gst_buffer_replace (&surface->video_buffer, NULL);
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gst_buffer_replace (&surface->sub_buffer, NULL);
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gst_object_unref (surface->audio_adapter);
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g_free (surface);
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}
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g_mutex_unlock (&mutex);
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}
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