gstreamer/gst/gio/gstgiosink.c
2012-04-10 00:45:16 +01:00

315 lines
10 KiB
C

/* 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-giosink
* @see_also: #GstFileSink, #GstGnomeVFSSink, #GstGioSrc
*
* This plugin writes incoming data to a local or remote location specified
* by an URI. This location can be specified using any protocol supported by
* the GIO library or it's VFS backends. Common protocols are 'file', 'ftp',
* or 'smb'.
*
* If the URI or #GFile already exists giosink will post a message of
* type %GST_MESSAGE_ELEMENT with name "file-exists" on the bus. The message
* also contains the #GFile and the corresponding URI.
* Applications can use the "file-exists" message to notify the user about
* the problem and to set a different target location or to remove the
* existing file. Note that right after the "file-exists" message a normal
* error message is posted on the bus which should be ignored if "file-exists"
* is handled by the application, for example by calling
* gst_bus_set_flushing(bus, TRUE) after the "file-exists" message was
* received and gst_bus_set_flushing(bus, FALSE) after the problem is
* resolved.
*
* Similar to the "file-exist" message a "not-mounted" message is posted
* on the bus if the target location is not mounted yet and needs to be
* mounted. This message can be used by application to mount the location
* and retry after the location was mounted successfully.
*
* <refsect2>
* <title>Example pipelines</title>
* |[
* gst-launch -v filesrc location=input.xyz ! giosink location=file:///home/joe/out.xyz
* ]| The above pipeline will simply copy a local file. Instead of giosink,
* we could just as well have used the filesink element here.
* |[
* gst-launch -v filesrc location=foo.mp3 ! mad ! flacenc ! giosink location=smb://othercomputer/foo.flac
* ]| The above pipeline will re-encode an mp3 file into FLAC format and store
* it on a remote host using the Samba protocol.
* |[
* gst-launch -v audiotestsrc num-buffers=100 ! vorbisenc ! oggmux ! giosink location=file:///home/foo/bar.ogg
* ]| The above pipeline will encode a 440Hz sine wave to Ogg Vorbis and stores
* it in the home directory of user foo.
* </refsect2>
*/
/* FIXME: We would like to mount the enclosing volume of an URL
* if it isn't mounted yet but this is possible async-only.
* Unfortunately this requires a running main loop from the
* default context and we can't guarantuee this!
*
* We would also like to do authentication while mounting.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstgiosink.h"
GST_DEBUG_CATEGORY_STATIC (gst_gio_sink_debug);
#define GST_CAT_DEFAULT gst_gio_sink_debug
/* Filter signals and args */
enum
{
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_LOCATION,
PROP_FILE
};
#define gst_gio_sink_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstGioSink, gst_gio_sink, GST_TYPE_GIO_BASE_SINK,
gst_gio_uri_handler_do_init (g_define_type_id));
static void gst_gio_sink_finalize (GObject * object);
static void gst_gio_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_gio_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GOutputStream *gst_gio_sink_get_stream (GstGioBaseSink * base_sink);
static void
gst_gio_sink_class_init (GstGioSinkClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstGioBaseSinkClass *gstgiobasesink_class = (GstGioBaseSinkClass *) klass;
GST_DEBUG_CATEGORY_INIT (gst_gio_sink_debug, "gio_sink", 0, "GIO sink");
gobject_class->finalize = gst_gio_sink_finalize;
gobject_class->set_property = gst_gio_sink_set_property;
gobject_class->get_property = gst_gio_sink_get_property;
g_object_class_install_property (gobject_class, PROP_LOCATION,
g_param_spec_string ("location", "Location", "URI location to write to",
NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstGioSink:file
*
* %GFile to write to.
*
* Since: 0.10.20
**/
g_object_class_install_property (gobject_class, PROP_FILE,
g_param_spec_object ("file", "File", "GFile to write to",
G_TYPE_FILE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_static_metadata (gstelement_class, "GIO sink",
"Sink/File",
"Write to any GIO-supported location",
"Ren\xc3\xa9 Stadler <mail@renestadler.de>, "
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
gstgiobasesink_class->get_stream =
GST_DEBUG_FUNCPTR (gst_gio_sink_get_stream);
gstgiobasesink_class->close_on_stop = TRUE;
}
static void
gst_gio_sink_init (GstGioSink * sink)
{
}
static void
gst_gio_sink_finalize (GObject * object)
{
GstGioSink *sink = GST_GIO_SINK (object);
if (sink->file) {
g_object_unref (sink->file);
sink->file = NULL;
}
GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
}
static void
gst_gio_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGioSink *sink = GST_GIO_SINK (object);
switch (prop_id) {
case PROP_LOCATION:{
const gchar *uri = NULL;
if (GST_STATE (sink) == GST_STATE_PLAYING ||
GST_STATE (sink) == GST_STATE_PAUSED) {
GST_WARNING
("Setting a new location or GFile not supported in PLAYING or PAUSED state");
break;
}
GST_OBJECT_LOCK (GST_OBJECT (sink));
if (sink->file)
g_object_unref (sink->file);
uri = g_value_get_string (value);
if (uri) {
sink->file = g_file_new_for_uri (uri);
if (!sink->file) {
GST_ERROR ("Could not create GFile for URI '%s'", uri);
}
} else {
sink->file = NULL;
}
GST_OBJECT_UNLOCK (GST_OBJECT (sink));
break;
}
case PROP_FILE:
if (GST_STATE (sink) == GST_STATE_PLAYING ||
GST_STATE (sink) == GST_STATE_PAUSED) {
GST_WARNING
("Setting a new location or GFile not supported in PLAYING or PAUSED state");
break;
}
GST_OBJECT_LOCK (GST_OBJECT (sink));
if (sink->file)
g_object_unref (sink->file);
sink->file = g_value_dup_object (value);
GST_OBJECT_UNLOCK (GST_OBJECT (sink));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gio_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGioSink *sink = GST_GIO_SINK (object);
switch (prop_id) {
case PROP_LOCATION:{
gchar *uri;
GST_OBJECT_LOCK (GST_OBJECT (sink));
if (sink->file) {
uri = g_file_get_uri (sink->file);
g_value_set_string (value, uri);
g_free (uri);
} else {
g_value_set_string (value, NULL);
}
GST_OBJECT_UNLOCK (GST_OBJECT (sink));
break;
}
case PROP_FILE:
GST_OBJECT_LOCK (GST_OBJECT (sink));
g_value_set_object (value, sink->file);
GST_OBJECT_UNLOCK (GST_OBJECT (sink));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GOutputStream *
gst_gio_sink_get_stream (GstGioBaseSink * bsink)
{
GstGioSink *sink = GST_GIO_SINK (bsink);
GOutputStream *stream;
GCancellable *cancel = GST_GIO_BASE_SINK (sink)->cancel;
GError *err = NULL;
gchar *uri;
if (sink->file == NULL) {
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
("No location or GFile given"));
return NULL;
}
uri = g_file_get_uri (sink->file);
if (!uri)
uri = g_strdup ("(null)");
stream =
G_OUTPUT_STREAM (g_file_create (sink->file, G_FILE_CREATE_NONE, cancel,
&err));
if (!stream) {
if (!gst_gio_error (sink, "g_file_create", &err, NULL)) {
/*if (GST_GIO_ERROR_MATCHES (err, EXISTS)) */
/* FIXME: Retry with replace if overwrite == TRUE! */
if (GST_GIO_ERROR_MATCHES (err, NOT_FOUND)) {
GST_ELEMENT_ERROR (sink, RESOURCE, NOT_FOUND, (NULL),
("Could not open location %s for writing: %s", uri, err->message));
} else if (GST_GIO_ERROR_MATCHES (err, EXISTS)) {
gst_element_post_message (GST_ELEMENT_CAST (sink),
gst_message_new_element (GST_OBJECT_CAST (sink),
gst_structure_new ("file-exists", "file", G_TYPE_FILE,
sink->file, "uri", G_TYPE_STRING, uri, NULL)));
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
("Location %s already exists: %s", uri, err->message));
} else if (GST_GIO_ERROR_MATCHES (err, NOT_MOUNTED)) {
gst_element_post_message (GST_ELEMENT_CAST (sink),
gst_message_new_element (GST_OBJECT_CAST (sink),
gst_structure_new ("not-mounted", "file", G_TYPE_FILE,
sink->file, "uri", G_TYPE_STRING, uri, NULL)));
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
("Location %s not mounted: %s", uri, err->message));
} else {
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
("Could not open location %s for writing: %s", uri, err->message));
}
g_clear_error (&err);
}
g_free (uri);
return NULL;
}
GST_DEBUG_OBJECT (sink, "opened location %s", uri);
g_free (uri);
return stream;
}