1 /* GStreamer
2  * Copyright (C)  2005 Sebastien Moutte <sebastien@moutte.net>
3  * Copyright (C) 2007 Pioneers of the Inevitable <songbird@songbirdnest.com>
4  * Copyright (C) 2010 Fluendo S.A. <support@fluendo.com>
5  *
6  * gstdirectsoundsink.h:
7  *
8  * This library is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Library General Public
10  * License as published by the Free Software Foundation; either
11  * version 2 of the License, or (at your option) any later version.
12  *
13  * This library is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Library General Public License for more details.
17  *
18  * You should have received a copy of the GNU Library General Public
19  * License along with this library; if not, write to the
20  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
21  * Boston, MA 02110-1301, USA.
22  *
23  * The development of this code was made possible due to the involvement
24  * of Pioneers of the Inevitable, the creators of the Songbird Music player
25  *
26  *
27  */
28 
29 #ifndef __GST_DIRECTSOUNDSINK_H__
30 #define __GST_DIRECTSOUNDSINK_H__
31 
32 #include <gst/gst.h>
33 #include <gst/audio/audio.h>
34 #include <gst/audio/gstaudiosink.h>
35 
36 #include <windows.h>
37 #include <dsound.h>
38 #include <mmreg.h>
39 #include <ks.h>
40 #include <ksmedia.h>
41 
42 G_BEGIN_DECLS
43 #define GST_TYPE_DIRECTSOUND_SINK            (gst_directsound_sink_get_type())
44 #define GST_DIRECTSOUND_SINK(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DIRECTSOUND_SINK,GstDirectSoundSink))
45 #define GST_DIRECTSOUND_SINK_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DIRECTSOUND_SINK,GstDirectSoundSinkClass))
46 #define GST_IS_DIRECTSOUND_SINK(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DIRECTSOUND_SINK))
47 #define GST_IS_DIRECTSOUND_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DIRECTSOUND_SINK))
48 typedef struct _GstDirectSoundSink GstDirectSoundSink;
49 typedef struct _GstDirectSoundSinkClass GstDirectSoundSinkClass;
50 
51 #define GST_DSOUND_LOCK(obj)	(g_mutex_lock (&obj->dsound_lock))
52 #define GST_DSOUND_UNLOCK(obj)	(g_mutex_unlock (&obj->dsound_lock))
53 
54 struct _GstDirectSoundSink
55 {
56   GstAudioSink sink;
57 
58 
59   /* directsound object interface pointer */
60   LPDIRECTSOUND pDS;
61 
62   /* directsound sound object interface pointer */
63   LPDIRECTSOUNDBUFFER pDSBSecondary;
64 
65   /* directSound buffer size */
66   guint buffer_size;
67 
68   /* offset of the circular buffer where we must write next */
69   guint current_circular_offset;
70 
71   guint bytes_per_sample;
72 
73   /* current volume setup by mixer interface */
74   glong volume;
75   gboolean mute;
76 
77   /* current directsound device ID */
78   gchar * device_id;
79 
80   GstCaps *cached_caps;
81   /* lock used to protect writes and resets */
82   GMutex dsound_lock;
83 
84   GstClock *system_clock;
85   GstClockID write_wait_clock_id;
86   gboolean reset_while_sleeping;
87 
88   gboolean first_buffer_after_reset;
89 
90   GstAudioRingBufferFormatType type;
91 };
92 
93 struct _GstDirectSoundSinkClass
94 {
95   GstAudioSinkClass parent_class;
96 };
97 
98 GType gst_directsound_sink_get_type (void);
99 
100 #define GST_DIRECTSOUND_SINK_CAPS "audio/x-raw, " \
101         "format = (string) S16LE, " \
102         "layout = (string) interleaved, " \
103         "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]; " \
104         "audio/x-raw, " \
105         "format = (string) U8, " \
106         "layout = (string) interleaved, " \
107         "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ];" \
108         "audio/x-ac3, framed = (boolean) true;" \
109         "audio/x-dts, framed = (boolean) true;"
110 
111 G_END_DECLS
112 #endif /* __GST_DIRECTSOUNDSINK_H__ */
113