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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim.taymans@chello.be>
*
* gstosshelper.h: helper functions for OSS Device handling. This
* set of functions takes care of device setting/getting,
* opening/closing devices, parsing caps to OSS formats/settings
* or the other way around, device probing, supported format
* probing and mixer integration.
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_OSS_HELPER_H__
#define __GST_OSS_HELPER_H__
#include <gst/gst.h>
#include <sys/types.h>
/* debugging category */
GST_DEBUG_CATEGORY_EXTERN (oss_debug);
#define GST_CAT_DEFAULT oss_debug
G_BEGIN_DECLS
enum {
ARG_0,
OSS_ARG_DEVICE,
OSS_ARG_MIXER_DEVICE,
OSS_ARG_DEVICE_NAME,
OSS_ARG_0
};
typedef enum {
GST_OSS_MODE_READ,
GST_OSS_MODE_WRITE,
GST_OSS_MODE_VOLUME,
GST_OSS_MODE_MIXER
} GstOssOpenMode;
/*
* Embed those two in whatever object you're creating.
*/
typedef struct _GstOssDeviceCombination {
gchar *dsp, *mixer;
dev_t dev;
} GstOssDeviceCombination;
typedef struct _GstOssDevice {
/* device state */
int fd;
int caps; /* the capabilities */
gint format;
gint fragment;
guint64 fragment_time;
gint fragment_size;
GstOssOpenMode mode;
GstCaps *probed_caps;
/* stats bytes per *second* */
guint bps;
/* sample width in bytes */
guint sample_width;
/* parameters */
gint law;
gint endianness;
gboolean sign;
gint width;
gint depth;
gint channels;
gint rate;
/* mixer stuff */
GList *tracklist;
guint32 stereomask,
recdevs,
recmask,
mixcaps;
gint mixer_fd;
gchar *device_name;
} GstOssDevice;
/*
* class/type/interface handling for mixer/device handling.
*/
void gst_oss_add_mixer_type (GType type);
void gst_oss_add_device_properties (GstElementClass * klass);
void gst_oss_set_device_property (GstElement * element,
GstOssDeviceCombination * c,
GstOssDevice * dev,
guint prop_id,
GParamSpec * pspec,
const GValue * value);
void gst_oss_get_device_property (GstElement * element,
GstOssDeviceCombination * c,
GstOssDevice * d,
guint prop_id,
GParamSpec * pspec,
GValue * value);
/*
* device open/close.
*/
void gst_oss_init (GObject * obj,
GstOssDeviceCombination * c,
GstOssDevice * dev,
GstOssOpenMode mode);
void gst_oss_dispose (GstOssDeviceCombination * c,
GstOssDevice * dev);
gboolean gst_oss_open (GstElement * element,
GstOssDeviceCombination * c,
GstOssDevice * dev);
void gst_oss_close (GstOssDevice * dev);
/*
* caps parsing/probing.
*/
gboolean gst_oss_parse_caps (GstOssDevice * dev,
const GstCaps * caps);
gboolean gst_oss_merge_fixed_caps (GstOssDevice * dev,
GstCaps * caps);
gboolean gst_oss_sync_parms (GstOssDevice * dev);
void gst_oss_reset (GstOssDevice * dev);
gboolean gst_oss_convert (GstOssDevice * dev,
GstFormat src_format,
gint64 src_value,
GstFormat * dest_format,
gint64 * dest_value);
void gst_oss_probe_caps (GstOssDevice * dev);
G_END_DECLS
#endif /* __GST_OSS_HELPER_H__ */
|
