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
|
/* GStreamer Push File Source
* Copyright (C) <2007> Tim-Philipp Müller <tim centricular net>
*
* 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-pushfilesrc
* @see_also: filesrc
*
* This element is only useful for debugging purposes. It implements an URI
* protocol handler for the 'pushfile' protocol and behaves like a file source
* element that cannot be activated in pull-mode. This makes it very easy to
* debug demuxers or decoders that can operate both pull and push-based in
* connection with the playbin element (which creates a source based on the
* URI passed).
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -m playbin uri=pushfile:///home/you/some/file.ogg
* ]| This plays back the given file using playbin, with the demuxer operating
* push-based.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstpushfilesrc.h"
#include <gst/gst.h>
GST_DEBUG_CATEGORY_STATIC (pushfilesrc_debug);
#define GST_CAT_DEFAULT pushfilesrc_debug
static const GstElementDetails pushfilesrc_details =
GST_ELEMENT_DETAILS ("Push File Source",
"Testing",
"Implements pushfile:// URI-handler for push-based file access",
"Tim-Philipp Müller <tim centricular net>");
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static void gst_push_file_src_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static void gst_file_push_src_add_uri_handler (GType type);
GST_BOILERPLATE_FULL (GstPushFileSrc, gst_push_file_src, GstBin, GST_TYPE_BIN,
gst_file_push_src_add_uri_handler);
static void
gst_file_push_src_add_uri_handler (GType type)
{
static const GInterfaceInfo info = {
gst_push_file_src_uri_handler_init,
NULL,
NULL
};
g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &info);
GST_DEBUG_CATEGORY_INIT (pushfilesrc_debug, "pushfilesrc", 0,
"pushfilesrc element");
}
static void
gst_push_file_src_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&srctemplate));
gst_element_class_set_details (element_class, &pushfilesrc_details);
}
static void
gst_push_file_src_dispose (GObject * obj)
{
GstPushFileSrc *src = GST_PUSH_FILE_SRC (obj);
if (src->srcpad) {
gst_element_remove_pad (GST_ELEMENT (src), src->srcpad);
src->srcpad = NULL;
}
if (src->filesrc) {
gst_bin_remove (GST_BIN (src), src->filesrc);
src->filesrc = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (obj);
}
static void
gst_push_file_src_class_init (GstPushFileSrcClass * g_class)
{
GObjectClass *gobject_class;
gobject_class = G_OBJECT_CLASS (g_class);
gobject_class->dispose = gst_push_file_src_dispose;
}
static gboolean
gst_push_file_src_ghostpad_checkgetrange (GstPad * pad)
{
return FALSE;
}
static void
gst_push_file_src_init (GstPushFileSrc * src, GstPushFileSrcClass * g_class)
{
src->filesrc = gst_element_factory_make ("filesrc", "real-filesrc");
if (src->filesrc) {
GstPad *pad;
gst_bin_add (GST_BIN (src), src->filesrc);
pad = gst_element_get_static_pad (src->filesrc, "src");
g_assert (pad != NULL);
src->srcpad = gst_ghost_pad_new ("src", pad);
/* FIXME^H^HCORE: try pushfile:///foo/bar.ext ! typefind ! fakesink without
* this and watch core bugginess (some pad stays in flushing state) */
gst_pad_set_checkgetrange_function (src->srcpad,
GST_DEBUG_FUNCPTR (gst_push_file_src_ghostpad_checkgetrange));
gst_element_add_pad (GST_ELEMENT (src), src->srcpad);
gst_object_unref (pad);
}
}
/*** GSTURIHANDLER INTERFACE *************************************************/
static GstURIType
gst_push_file_src_uri_get_type (void)
{
return GST_URI_SRC;
}
static gchar **
gst_push_file_src_uri_get_protocols (void)
{
static gchar *protocols[] = { "pushfile", NULL };
return protocols;
}
static const gchar *
gst_push_file_src_uri_get_uri (GstURIHandler * handler)
{
GstPushFileSrc *src = GST_PUSH_FILE_SRC (handler);
if (src->filesrc == NULL)
return NULL;
return gst_uri_handler_get_uri (GST_URI_HANDLER (src->filesrc));
}
static gboolean
gst_push_file_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
GstPushFileSrc *src = GST_PUSH_FILE_SRC (handler);
if (src->filesrc == NULL || !g_str_has_prefix (uri, "pushfile://"))
return FALSE;
/* skip 'push' bit */
return gst_uri_handler_set_uri (GST_URI_HANDLER (src->filesrc), uri + 4);
}
static void
gst_push_file_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_push_file_src_uri_get_type;
iface->get_protocols = gst_push_file_src_uri_get_protocols;
iface->get_uri = gst_push_file_src_uri_get_uri;
iface->set_uri = gst_push_file_src_uri_set_uri;
}
|
