1 /* GStreamer
2 * Copyright (C) 2012 Fluendo S.A. <support@fluendo.com>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include <gst/gst.h>
25 #include <SLES/OpenSLES.h>
26
27 #include "opensles.h"
28 #include "openslessink.h"
29 #include "openslessrc.h"
30
31 static GMutex engine_mutex;
32 static SLObjectItf engine_object = NULL;
33 static gint engine_object_refcount = 0;
34
35 SLObjectItf
gst_opensles_get_engine(void)36 gst_opensles_get_engine (void)
37 {
38 g_mutex_lock (&engine_mutex);
39 if (!engine_object) {
40 SLresult result;
41 result = slCreateEngine (&engine_object, 0, NULL, 0, NULL, NULL);
42 if (result != SL_RESULT_SUCCESS) {
43 GST_ERROR ("slCreateEngine failed(0x%08x)", (guint32) result);
44 engine_object = NULL;
45 }
46
47 result = (*engine_object)->Realize (engine_object, SL_BOOLEAN_FALSE);
48 if (result != SL_RESULT_SUCCESS) {
49 GST_ERROR ("engine.Realize failed(0x%08x)", (guint32) result);
50 (*engine_object)->Destroy (engine_object);
51 engine_object = NULL;
52 }
53 }
54
55 if (engine_object) {
56 engine_object_refcount++;
57 }
58 g_mutex_unlock (&engine_mutex);
59
60 return engine_object;
61 }
62
63 void
gst_opensles_release_engine(SLObjectItf engine_object_parameter)64 gst_opensles_release_engine (SLObjectItf engine_object_parameter)
65 {
66 g_mutex_lock (&engine_mutex);
67 g_assert (engine_object == engine_object_parameter);
68
69 if (engine_object) {
70 engine_object_refcount--;
71
72 if (engine_object_refcount == 0) {
73 (*engine_object)->Destroy (engine_object);
74 engine_object = NULL;
75 }
76 }
77 g_mutex_unlock (&engine_mutex);
78 }
79
80 static gboolean
plugin_init(GstPlugin * plugin)81 plugin_init (GstPlugin * plugin)
82 {
83 g_mutex_init (&engine_mutex);
84
85 if (!gst_element_register (plugin, "openslessink", GST_RANK_PRIMARY,
86 GST_TYPE_OPENSLES_SINK)) {
87 return FALSE;
88 }
89 if (!gst_element_register (plugin, "openslessrc", GST_RANK_PRIMARY,
90 GST_TYPE_OPENSLES_SRC)) {
91 return FALSE;
92 }
93
94 return TRUE;
95 }
96
97 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
98 GST_VERSION_MINOR,
99 opensles,
100 "OpenSL ES support for GStreamer",
101 plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
102