1 /*
2  * GStreamer
3  *
4  * Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
5  * Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
6  * Copyright (C) 2009-2010 Chris Robinson <chris.kcat@gmail.com>
7  * Copyright (C) 2013 Juan Manuel Borges Caño <juanmabcmail@gmail.com>
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Library General Public
11  * License as published by the Free Software Foundation; either
12  * version 2 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17  * Library General Public License for more details.
18  *
19  * You should have received a copy of the GNU Library General Public
20  * License along with this library; if not, write to the
21  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
22  * Boston, MA 02110-1301, USA.
23  */
24 
25 #ifndef __GST_OPENALSINK_H__
26 #define __GST_OPENALSINK_H__
27 
28 #include <gst/gst.h>
29 #include <gst/audio/audio.h>
30 
31 #ifdef _WIN32
32 #include <al.h>
33 #include <alc.h>
34 #include <alext.h>
35 #else
36 #include <AL/al.h>
37 #include <AL/alc.h>
38 #include <AL/alext.h>
39 #endif
40 
41 G_BEGIN_DECLS
42 
43 #define GST_TYPE_OPENAL_SINK \
44     (gst_openal_sink_get_type())
45 #define GST_OPENAL_SINK(obj) \
46     (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OPENAL_SINK,GstOpenALSink))
47 #define GST_OPENAL_SINK_CLASS(klass) \
48     (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OPENAL_SINK,GstOpenALSinkClass))
49 #define GST_IS_OPENAL_SINK(obj) \
50     (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OPENAL_SINK))
51 #define GST_IS_OPENAL_SINK_CLASS(klass) \
52     (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OPENAL_SINK))
53 #define GST_OPENAL_SINK_CAST(obj) \
54     ((GstOpenALSink*)obj)
55 
56 #if 1
57 #define GST_ALC_ERROR(Device)  ("ALC error: %s", alcGetString((Device), alcGetError((Device))))
58 #else
59 #define GST_ALC_ERROR(Device)  ("ALC error: 0x%x", alcGetError((Device)))
60 #endif
61 
62 typedef struct _GstOpenALSink GstOpenALSink;
63 typedef struct _GstOpenALSinkClass GstOpenALSinkClass;
64 
65 #define GST_OPENAL_SINK_GET_LOCK(obj) (&GST_OPENAL_SINK_CAST(obj)->openal_lock)
66 #define GST_OPENAL_SINK_LOCK(obj)     (g_mutex_lock(GST_OPENAL_SINK_GET_LOCK(obj)))
67 #define GST_OPENAL_SINK_UNLOCK(obj)   (g_mutex_unlock(GST_OPENAL_SINK_GET_LOCK(obj)))
68 
69 struct _GstOpenALSink
70 {
71   GstAudioSink sink;
72 
73   gchar *device_name;
74 
75   ALCdevice *default_device;
76   /* When set, device is not owned */
77   ALCdevice *user_device;
78 
79   ALCcontext *default_context;
80   /* When set, device or context is not owned */
81   ALCcontext *user_context;
82 
83   ALuint default_source;
84   /* When set, source is not owned */
85   ALuint user_source;
86 
87   ALuint buffer_idx;
88   ALuint buffer_count;
89   ALuint *buffers;
90   ALuint buffer_length;
91 
92   ALenum format;
93   ALuint rate;
94   ALuint channels;
95   ALuint bytes_per_sample;
96 
97   ALboolean write_reset;
98 
99   GstCaps *probed_caps;
100 
101   GMutex openal_lock;
102 };
103 
104 struct _GstOpenALSinkClass
105 {
106   GstAudioSinkClass parent_class;
107 };
108 
109 GType gst_openal_sink_get_type (void);
110 
111 G_END_DECLS
112 
113 #endif /* __GST_OPENALSINK_H__ */
114