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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/* GStreamer
*
* Copyright (C) 2007 Rene Stadler <mail@renestadler.de>
* Copyright (C) 2007-2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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.
*/
/**
* SECTION:element-giostreamsink
*
* This plugin writes incoming data to a custom GIO #GOutputStream.
*
* It can, for example, be used to write a stream to memory with a
* #GMemoryOuputStream or to write to a file with a #GFileOuputStream.
*
* <refsect2>
* <title>Example code</title>
* <para>
* The following example writes the received data to a #GMemoryOutputStream.
* |[
#include <gst/gst.h>
#include <gio/gio.h>
...
GstElement *sink;
GMemoryOuputStream *stream;
// out_data will contain the received data
guint8 *out_data;
...
stream = G_MEMORY_OUTPUT_STREAM (g_memory_output_stream_new (NULL, 0,
(GReallocFunc) g_realloc, (GDestroyNotify) g_free));
sink = gst_element_factory_make ("giostreamsink", "sink");
g_object_set (G_OBJECT (sink), "stream", stream, NULL);
...
// after processing get the written data
out_data = g_memory_ouput_stream_get_data (G_MEMORY_OUTPUT_STREAM (stream));
...
* ]|
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstgiostreamsink.h"
GST_DEBUG_CATEGORY_STATIC (gst_gio_stream_sink_debug);
#define GST_CAT_DEFAULT gst_gio_stream_sink_debug
/* Filter signals and args */
enum
{
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_STREAM
};
GST_BOILERPLATE (GstGioStreamSink, gst_gio_stream_sink, GstGioBaseSink,
GST_TYPE_GIO_BASE_SINK);
static void gst_gio_stream_sink_finalize (GObject * object);
static void gst_gio_stream_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_gio_stream_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GOutputStream *gst_gio_stream_sink_get_stream (GstGioBaseSink * bsink);
static void
gst_gio_stream_sink_base_init (gpointer gclass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
GST_DEBUG_CATEGORY_INIT (gst_gio_stream_sink_debug, "gio_stream_sink", 0,
"GIO stream sink");
gst_element_class_set_details_simple (element_class, "GIO stream sink",
"Sink",
"Write to any GIO stream",
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
}
static void
gst_gio_stream_sink_class_init (GstGioStreamSinkClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstGioBaseSinkClass *ggbsink_class = (GstGioBaseSinkClass *) klass;
gobject_class->finalize = gst_gio_stream_sink_finalize;
gobject_class->set_property = gst_gio_stream_sink_set_property;
gobject_class->get_property = gst_gio_stream_sink_get_property;
g_object_class_install_property (gobject_class, PROP_STREAM,
g_param_spec_object ("stream", "Stream", "Stream to write to",
G_TYPE_OUTPUT_STREAM, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
ggbsink_class->get_stream =
GST_DEBUG_FUNCPTR (gst_gio_stream_sink_get_stream);
}
static void
gst_gio_stream_sink_init (GstGioStreamSink * sink,
GstGioStreamSinkClass * gclass)
{
}
static void
gst_gio_stream_sink_finalize (GObject * object)
{
GstGioStreamSink *sink = GST_GIO_STREAM_SINK (object);
if (sink->stream) {
g_object_unref (sink->stream);
sink->stream = NULL;
}
GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
}
static void
gst_gio_stream_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGioStreamSink *sink = GST_GIO_STREAM_SINK (object);
switch (prop_id) {
case PROP_STREAM:{
GObject *stream;
if (GST_STATE (sink) == GST_STATE_PLAYING ||
GST_STATE (sink) == GST_STATE_PAUSED) {
GST_WARNING
("Setting a new stream not supported in PLAYING or PAUSED state");
break;
}
stream = g_value_dup_object (value);
if (sink->stream)
g_object_unref (sink->stream);
sink->stream = G_OUTPUT_STREAM (stream);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gio_stream_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGioStreamSink *sink = GST_GIO_STREAM_SINK (object);
switch (prop_id) {
case PROP_STREAM:
g_value_set_object (value, GST_GIO_BASE_SINK (sink)->stream);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GOutputStream *
gst_gio_stream_sink_get_stream (GstGioBaseSink * bsink)
{
GstGioStreamSink *sink = GST_GIO_STREAM_SINK (bsink);
return (sink->stream) ? g_object_ref (sink->stream) : NULL;
}
|
