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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/*
* GStreamer
* Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2011 Igalia S.L.
*
* 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.
*/
/**
* SECTION:element-debugspy
*
* A spy element that can provide information on buffers going through it, with
* bus messages.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -m videotestsrc ! debugspy ! fakesink
* ]|
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gst/gst.h>
#include "gstdebugspy.h"
GST_DEBUG_CATEGORY_STATIC (gst_debug_spy_debug);
#define GST_CAT_DEFAULT gst_debug_spy_debug
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_SILENT,
PROP_CHECKSUM_TYPE
};
/* create a GType for GChecksumType */
#define GST_DEBUG_SPY_CHECKSUM_TYPE (gst_debug_spy_checksum_get_type())
static GType
gst_debug_spy_checksum_get_type (void)
{
static GType checksum_type = 0;
static const GEnumValue checksum_values[] = {
{G_CHECKSUM_MD5, "Use the MD5 hashing algorithm", "md5"},
{G_CHECKSUM_SHA1, "Use the SHA-1 hashing algorithm", "sha1"},
{G_CHECKSUM_SHA256, "Use the SHA-256 hashing algorithm", "sha256"},
{0, NULL, NULL}
};
if (!checksum_type)
checksum_type = g_enum_register_static ("GChecksumType", checksum_values);
return checksum_type;
}
/* the capabilities of the inputs and outputs.
*
* describe the real formats here.
*/
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY")
);
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY")
);
G_DEFINE_TYPE (GstDebugSpy, gst_debug_spy, GST_TYPE_BASE_TRANSFORM);
static void gst_debug_spy_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_debug_spy_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_debug_spy_transform_ip (GstBaseTransform * transform,
GstBuffer * buf);
/* GObject vmethod implementations */
/* initialize the debugspy's class */
static void
gst_debug_spy_class_init (GstDebugSpyClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseTransformClass *base_transform_class;
gobject_class = (GObjectClass *) klass;
element_class = (GstElementClass *) klass;
base_transform_class = (GstBaseTransformClass *) klass;
gobject_class->set_property = gst_debug_spy_set_property;
gobject_class->get_property = gst_debug_spy_get_property;
base_transform_class->passthrough_on_same_caps = TRUE;
base_transform_class->transform_ip = gst_debug_spy_transform_ip;
g_object_class_install_property (gobject_class, PROP_SILENT,
g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?",
FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CHECKSUM_TYPE,
g_param_spec_enum ("checksum-type", "Checksum TYpe",
"Checksum algorithm to use", GST_DEBUG_SPY_CHECKSUM_TYPE,
G_CHECKSUM_SHA1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_static_metadata (element_class,
"DebugSpy",
"Filter/Analyzer/Debug",
"DebugSpy provides information on buffers with bus messages",
"Guillaume Emont <gemont@igalia.com>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_factory));
GST_DEBUG_CATEGORY_INIT (gst_debug_spy_debug, "debugspy", 0, "debugspy");
}
/* initialize the new element
* instantiate pads and add them to element
* set pad calback functions
* initialize instance structure
*/
static void
gst_debug_spy_init (GstDebugSpy * debugspy)
{
debugspy->silent = FALSE;
debugspy->checksum_type = G_CHECKSUM_SHA1;
}
static void
gst_debug_spy_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstDebugSpy *debugspy = GST_DEBUGSPY (object);
switch (prop_id) {
case PROP_SILENT:
debugspy->silent = g_value_get_boolean (value);
break;
case PROP_CHECKSUM_TYPE:
debugspy->checksum_type = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_debug_spy_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstDebugSpy *debugspy = GST_DEBUGSPY (object);
switch (prop_id) {
case PROP_SILENT:
g_value_set_boolean (value, debugspy->silent);
break;
case PROP_CHECKSUM_TYPE:
g_value_set_enum (value, debugspy->checksum_type);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* GstBaseTransform vmethod implementations */
static GstFlowReturn
gst_debug_spy_transform_ip (GstBaseTransform * transform, GstBuffer * buf)
{
GstDebugSpy *debugspy = GST_DEBUGSPY (transform);
if (debugspy->silent == FALSE) {
gchar *checksum;
GstMessage *message;
GstStructure *message_structure;
GstMapInfo map;
GstCaps *caps;
gst_buffer_map (buf, &map, GST_MAP_READ);
checksum = g_compute_checksum_for_data (debugspy->checksum_type,
map.data, map.size);
caps = gst_pad_get_current_caps (GST_BASE_TRANSFORM_SRC_PAD (transform));
message_structure = gst_structure_new ("buffer",
"checksum", G_TYPE_STRING, checksum,
"timestamp", GST_TYPE_CLOCK_TIME, GST_BUFFER_TIMESTAMP (buf),
"duration", GST_TYPE_CLOCK_TIME, GST_BUFFER_DURATION (buf),
"offset", G_TYPE_UINT64, GST_BUFFER_OFFSET (buf),
"offset_end", G_TYPE_UINT64, GST_BUFFER_OFFSET_END (buf),
"size", G_TYPE_UINT, map.size, "caps", GST_TYPE_CAPS, caps, NULL);
if (caps)
gst_caps_unref (caps);
g_free (checksum);
gst_buffer_unmap (buf, &map);
message =
gst_message_new_element (GST_OBJECT (transform), message_structure);
gst_element_post_message (GST_ELEMENT (transform), message);
}
return GST_FLOW_OK;
}
|
