1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/*
* Copyright (C) 2008 Ole André Vadla Ravnås <ole.andre.ravnas@tandberg.com>
*
* 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 St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_WASAPI_SRC_H__
#define __GST_WASAPI_SRC_H__
#include "gstwasapiutil.h"
G_BEGIN_DECLS
#define GST_TYPE_WASAPI_SRC \
(gst_wasapi_src_get_type ())
#define GST_WASAPI_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_WASAPI_SRC, GstWasapiSrc))
#define GST_WASAPI_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_WASAPI_SRC, GstWasapiSrcClass))
#define GST_IS_WASAPI_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_WASAPI_SRC))
#define GST_IS_WASAPI_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_WASAPI_SRC))
typedef struct _GstWasapiSrc GstWasapiSrc;
typedef struct _GstWasapiSrcClass GstWasapiSrcClass;
struct _GstWasapiSrc
{
GstAudioSrc parent;
GstMMDeviceEnumerator *enumerator;
IMMDevice *device;
IAudioClient *client;
IAudioClock *client_clock;
guint64 client_clock_freq;
IAudioCaptureClient *capture_client;
HANDLE event_handle;
HANDLE cancellable;
/* Smooth frames captured from WASAPI, which can be irregular sometimes */
GstAdapter *adapter;
/* Client was reset, so it needs to be started again */
gboolean client_needs_restart;
/* The mix format that wasapi prefers in shared mode */
WAVEFORMATEX *mix_format;
/* The probed caps that we can accept */
GstCaps *cached_caps;
/* The channel positions in the data read from the device
* we will pass this to GstAudioRingbuffer so it can
* translate it to the native GStreamer channel layout. */
GstAudioChannelPosition *positions;
/* Used for loopback use case in order to keep feeding silence into client */
IAudioClient *loopback_client;
IAudioRenderClient *loopback_render_client;
GThread *loopback_thread;
HANDLE loopback_event_handle;
HANDLE loopback_cancellable;
/* properties */
gint role;
gint sharemode;
gboolean loopback;
gboolean low_latency;
gboolean try_audioclient3;
wchar_t *device_strid;
};
struct _GstWasapiSrcClass
{
GstAudioSrcClass parent_class;
};
GType gst_wasapi_src_get_type (void);
G_END_DECLS
#endif /* __GST_WASAPI_SRC_H__ */
|
