author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 08:53:32 +0200 | |
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/* GStreamer |
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* |
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* Copyright (C) 2007 Rene Stadler <mail@renestadler.de> |
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* Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org> |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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|
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/** |
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* SECTION:element-giosrc |
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* @short_description: Read from any GIO-supported location |
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* @see_also: #GstFileSrc, #GstGnomeVFSSrc, #GstGioSink |
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* |
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* <refsect2> |
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* <para> |
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* This plugin reads data from a local or remote location specified |
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* by an URI. This location can be specified using any protocol supported by |
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* the GIO library or it's VFS backends. Common protocols are 'file', 'http', |
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* 'ftp', or 'smb'. |
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* </para> |
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* <para> |
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* Example pipeline: |
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* <programlisting> |
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* gst-launch -v giosrc location=file:///home/joe/foo.xyz ! fakesink |
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* </programlisting> |
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* The above pipeline will simply read a local file and do nothing with the |
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* data read. Instead of giosrc, we could just as well have used the |
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* filesrc element here. |
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* </para> |
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* <para> |
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* Another example pipeline: |
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* <programlisting> |
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* gst-launch -v giosrc location=smb://othercomputer/foo.xyz ! filesink location=/home/joe/foo.xyz |
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* </programlisting> |
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* The above pipeline will copy a file from a remote host to the local file |
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* system using the Samba protocol. |
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* </para> |
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* <para> |
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* Yet another example pipeline: |
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* <programlisting> |
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* gst-launch -v giosrc location=http://music.foobar.com/demo.mp3 ! mad ! audioconvert ! audioresample ! alsasink |
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* </programlisting> |
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* The above pipeline will read and decode and play an mp3 file from a |
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* web server using the http protocol. |
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* </para> |
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* </refsect2> |
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*/ |
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/* FIXME: We would like to mount the enclosing volume of an URL |
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* if it isn't mounted yet but this is possible async-only. |
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* Unfortunately this requires a running main loop from the |
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* default context and we can't guarantuee this! |
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* |
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* We would also like to do authentication while mounting. |
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*/ |
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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#include "gstgiosrc.h" |
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GST_DEBUG_CATEGORY_STATIC (gst_gio_src_debug); |
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#define GST_CAT_DEFAULT gst_gio_src_debug |
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enum |
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{ |
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ARG_0, |
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ARG_LOCATION |
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}; |
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GST_BOILERPLATE_FULL (GstGioSrc, gst_gio_src, GstGioBaseSrc, |
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GST_TYPE_GIO_BASE_SRC, gst_gio_uri_handler_do_init); |
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static void gst_gio_src_finalize (GObject * object); |
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static void gst_gio_src_set_property (GObject * object, guint prop_id, |
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const GValue * value, GParamSpec * pspec); |
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static void gst_gio_src_get_property (GObject * object, guint prop_id, |
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GValue * value, GParamSpec * pspec); |
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static gboolean gst_gio_src_start (GstBaseSrc * base_src); |
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static void |
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gst_gio_src_base_init (gpointer gclass) |
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{ |
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static GstElementDetails element_details = { |
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"GIO source", |
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"Source/File", |
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"Read from any GIO-supported location", |
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102 |
"Ren\xc3\xa9 Stadler <mail@renestadler.de>, " |
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|
103 |
"Sebastian Dröge <slomo@circular-chaos.org>" |
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|
104 |
}; |
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|
105 |
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass); |
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|
106 |
|
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|
107 |
GST_DEBUG_CATEGORY_INIT (gst_gio_src_debug, "gio_src", 0, "GIO source"); |
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|
108 |
|
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|
109 |
gst_element_class_set_details (element_class, &element_details); |
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|
110 |
} |
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|
111 |
|
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112 |
static void |
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|
113 |
gst_gio_src_class_init (GstGioSrcClass * klass) |
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114 |
{ |
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115 |
GObjectClass *gobject_class; |
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116 |
GstElementClass *gstelement_class; |
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117 |
GstBaseSrcClass *gstbasesrc_class; |
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|
118 |
|
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119 |
gobject_class = (GObjectClass *) klass; |
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120 |
gstelement_class = (GstElementClass *) klass; |
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121 |
gstbasesrc_class = (GstBaseSrcClass *) klass; |
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122 |
|
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123 |
gobject_class->finalize = gst_gio_src_finalize; |
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|
124 |
gobject_class->set_property = gst_gio_src_set_property; |
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|
125 |
gobject_class->get_property = gst_gio_src_get_property; |
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|
126 |
|
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|
127 |
g_object_class_install_property (gobject_class, ARG_LOCATION, |
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|
128 |
g_param_spec_string ("location", "Location", "URI location to read from", |
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|
129 |
NULL, G_PARAM_READWRITE)); |
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|
130 |
|
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|
131 |
gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_gio_src_start); |
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132 |
} |
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|
133 |
|
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134 |
static void |
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135 |
gst_gio_src_init (GstGioSrc * src, GstGioSrcClass * gclass) |
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136 |
{ |
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137 |
} |
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|
138 |
|
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139 |
static void |
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140 |
gst_gio_src_finalize (GObject * object) |
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141 |
{ |
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142 |
GstGioSrc *src = GST_GIO_SRC (object); |
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|
143 |
|
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|
144 |
if (src->location) { |
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|
145 |
g_free (src->location); |
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|
146 |
src->location = NULL; |
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|
147 |
} |
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|
148 |
|
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|
149 |
GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object)); |
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150 |
} |
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|
151 |
|
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152 |
static void |
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|
153 |
gst_gio_src_set_property (GObject * object, guint prop_id, |
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|
154 |
const GValue * value, GParamSpec * pspec) |
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|
155 |
{ |
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|
156 |
GstGioSrc *src = GST_GIO_SRC (object); |
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|
157 |
|
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|
158 |
switch (prop_id) { |
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|
159 |
case ARG_LOCATION: |
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|
160 |
if (GST_STATE (src) == GST_STATE_PLAYING || |
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|
161 |
GST_STATE (src) == GST_STATE_PAUSED) |
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|
162 |
break; |
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|
163 |
|
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|
164 |
g_free (src->location); |
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|
165 |
src->location = g_strdup (g_value_get_string (value)); |
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|
166 |
break; |
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|
167 |
default: |
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|
168 |
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
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|
169 |
break; |
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|
170 |
} |
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|
171 |
} |
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|
172 |
|
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|
173 |
static void |
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|
174 |
gst_gio_src_get_property (GObject * object, guint prop_id, |
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|
175 |
GValue * value, GParamSpec * pspec) |
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|
176 |
{ |
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|
177 |
GstGioSrc *src = GST_GIO_SRC (object); |
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|
178 |
|
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|
179 |
switch (prop_id) { |
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|
180 |
case ARG_LOCATION: |
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|
181 |
g_value_set_string (value, src->location); |
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|
182 |
break; |
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|
183 |
default: |
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|
184 |
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
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|
185 |
break; |
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|
186 |
} |
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|
187 |
} |
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|
188 |
|
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|
189 |
static gboolean |
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|
190 |
gst_gio_src_start (GstBaseSrc * base_src) |
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|
191 |
{ |
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|
192 |
GstGioSrc *src = GST_GIO_SRC (base_src); |
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|
193 |
GFile *file; |
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|
194 |
GError *err = NULL; |
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|
195 |
GInputStream *stream; |
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|
196 |
GCancellable *cancel = GST_GIO_BASE_SRC (src)->cancel; |
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|
197 |
|
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|
198 |
if (src->location == NULL) { |
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|
199 |
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), ("No location given")); |
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|
200 |
return FALSE; |
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|
201 |
} |
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|
202 |
|
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|
203 |
file = g_file_new_for_uri (src->location); |
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|
204 |
|
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Revision: 200949
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|
205 |
if (file == NULL) { |
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Revision: 200949
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|
206 |
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), |
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("Malformed URI or protocol not supported (%s)", src->location)); |
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208 |
return FALSE; |
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209 |
} |
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210 |
|
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211 |
stream = G_INPUT_STREAM (g_file_read (file, cancel, &err)); |
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212 |
|
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g_object_unref (file); |
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214 |
|
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215 |
if (stream == NULL && !gst_gio_error (src, "g_file_read", &err, NULL)) { |
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216 |
|
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217 |
if (GST_GIO_ERROR_MATCHES (err, NOT_FOUND)) { |
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|
218 |
GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL), |
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219 |
("Could not open location %s for reading: %s", |
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220 |
src->location, err->message)); |
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221 |
} else { |
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222 |
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), |
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223 |
("Could not open location %s for reading: %s", |
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src->location, err->message)); |
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225 |
} |
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226 |
|
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227 |
g_clear_error (&err); |
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228 |
return FALSE; |
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} else if (stream == NULL) { |
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return FALSE; |
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231 |
} |
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|
232 |
|
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233 |
gst_gio_base_src_set_stream (GST_GIO_BASE_SRC (src), stream); |
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|
234 |
|
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GST_DEBUG_OBJECT (src, "opened location %s", src->location); |
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|
236 |
|
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return GST_BASE_SRC_CLASS (parent_class)->start (base_src); |
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|
238 |
} |