gstreamer/ext/gnomevfs/gstgnomevfssink.c

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2001 Bastien Nocera <hadess@hadess.net>
*
* gstgnomevfssink.c:
*
* 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.
*/
#include <gst/gst.h>
#include <libgnomevfs/gnome-vfs.h>
#include <string.h>
#include <errno.h>
GstElementDetails gst_gnomevfssink_details;
#define GST_TYPE_GNOMEVFSSINK \
(gst_gnomevfssink_get_type())
#define GST_GNOMEVFSSINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GNOMEVFSSINK,GstGnomeVFSSink))
#define GST_GNOMEVFSSINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GNOMEVFSSINK,GstGnomeVFSSinkClass))
#define GST_IS_GNOMEVFSSINK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GNOMEVFSSINK))
#define GST_IS_GNOMEVFSSINK_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GNOMEVFSSINK))
typedef struct _GstGnomeVFSSink GstGnomeVFSSink;
typedef struct _GstGnomeVFSSinkClass GstGnomeVFSSinkClass;
typedef enum {
GST_GNOMEVFSSINK_OPEN = GST_ELEMENT_FLAG_LAST,
GST_GNOMEVFSSINK_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 2,
} GstGnomeVFSSinkFlags;
struct _GstGnomeVFSSink {
GstElement element;
/* filename */
gchar *filename;
/* uri */
GnomeVFSURI *uri;
/* handle */
GnomeVFSHandle *handle;
/* wether to erase a file or not */
gboolean erase;
};
struct _GstGnomeVFSSinkClass {
GstElementClass parent_class;
/* signals */
void (*handoff) (GstElement *element,GstPad *pad);
void (*erase_ask) (GstElement *element,GstPad *pad);
};
GType gst_gnomevfssink_get_type(void);
GstElementDetails gst_gnomevfssink_details = {
"GnomeVFS Sink",
"Sink",
"GnomeVFS hole for data",
VERSION,
"Bastien Nocera <hadess@hadess.net>",
"(C) 2001"
};
/* GnomeVFSSink signals and args */
enum {
/* FILL ME */
SIGNAL_HANDOFF,
SIGNAL_ERASE_ASK,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_LOCATION,
ARG_ERASE
};
static void gst_gnomevfssink_class_init (GstGnomeVFSSinkClass *klass);
static void gst_gnomevfssink_init (GstGnomeVFSSink *gnomevfssink);
static void gst_gnomevfssink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gst_gnomevfssink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static gboolean gst_gnomevfssink_open_file (GstGnomeVFSSink *sink);
static void gst_gnomevfssink_close_file (GstGnomeVFSSink *sink);
static void gst_gnomevfssink_chain (GstPad *pad,GstBuffer *buf);
static GstElementStateReturn gst_gnomevfssink_change_state (GstElement *element);
static GstElementClass *parent_class = NULL;
static guint gst_gnomevfssink_signals[LAST_SIGNAL] = { 0 };
GType
gst_gnomevfssink_get_type (void)
{
static GType gnomevfssink_type = 0;
if (!gnomevfssink_type) {
static const GTypeInfo gnomevfssink_info = {
sizeof(GstGnomeVFSSinkClass), NULL,
NULL,
(GClassInitFunc)gst_gnomevfssink_class_init,
NULL,
NULL,
sizeof(GstGnomeVFSSink),
0,
(GInstanceInitFunc)gst_gnomevfssink_init,
};
gnomevfssink_type = g_type_register_static (GST_TYPE_ELEMENT, "GstGnomeVFSSink", &gnomevfssink_info, 0);
}
return gnomevfssink_type;
}
static void
gst_gnomevfssink_class_init (GstGnomeVFSSinkClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gst_element_class_install_std_props (
GST_ELEMENT_CLASS (klass),
"location", ARG_LOCATION, G_PARAM_READWRITE,
NULL);
gst_gnomevfssink_signals[SIGNAL_HANDOFF] =
g_signal_new ("handoff", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstGnomeVFSSinkClass, handoff), NULL, NULL,
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
gst_gnomevfssink_signals[SIGNAL_ERASE_ASK] =
g_signal_new ("erase-ask", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstGnomeVFSSinkClass, erase_ask), NULL, NULL,
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
gobject_class->set_property = gst_gnomevfssink_set_property;
gobject_class->get_property = gst_gnomevfssink_get_property;
gstelement_class->change_state = gst_gnomevfssink_change_state;
/* gnome vfs engine init */
if (gnome_vfs_initialized() == FALSE)
gnome_vfs_init();
}
static void
gst_gnomevfssink_init (GstGnomeVFSSink *gnomevfssink)
{
GstPad *pad;
pad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (gnomevfssink), pad);
gst_pad_set_chain_function (pad, gst_gnomevfssink_chain);
gnomevfssink->filename = NULL;
gnomevfssink->uri = NULL;
gnomevfssink->handle = NULL;
gnomevfssink->erase = FALSE;
}
static void
gst_gnomevfssink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstGnomeVFSSink *sink;
/* it's not null if we got it, but it might not be ours */
sink = GST_GNOMEVFSSINK (object);
switch (prop_id) {
case ARG_LOCATION:
if (sink->filename)
g_free (sink->filename);
if (sink->uri)
g_free (sink->uri);
if (sink->handle)
g_free (sink->handle);
sink->filename = g_strdup (g_value_get_string (value));
break;
case ARG_ERASE:
sink->erase = g_value_get_boolean (value);
break;
default:
break;
}
}
static void
gst_gnomevfssink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstGnomeVFSSink *sink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_GNOMEVFSSINK (object));
sink = GST_GNOMEVFSSINK (object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, sink->filename);
break;
case ARG_ERASE:
g_value_set_boolean (value, sink->erase);
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_gnomevfssink_open_file (GstGnomeVFSSink *sink)
{
GnomeVFSResult result;
g_return_val_if_fail (!GST_FLAG_IS_SET (sink, GST_GNOMEVFSSINK_OPEN), FALSE);
/* create the GnomeVFSURI from the url */
sink->uri = gnome_vfs_uri_new(sink->filename);
if (!sink->uri) {
gst_element_error (GST_ELEMENT (sink), "opening file \"%s\" (%s)", sink->filename, strerror (errno));
return FALSE;
}
/* open the file */
result = gnome_vfs_create_uri(&(sink->handle), sink->uri,
GNOME_VFS_OPEN_WRITE, sink->erase,
GNOME_VFS_PERM_USER_READ | GNOME_VFS_PERM_USER_WRITE
| GNOME_VFS_PERM_GROUP_READ);
GST_DEBUG (0, "open: %s", gnome_vfs_result_to_string(result));
if (result != GNOME_VFS_OK) {
if (sink->erase == FALSE) {
g_signal_emit (G_OBJECT (sink),
gst_gnomevfssink_signals[SIGNAL_ERASE_ASK], 0,
sink->erase);
}
gst_element_error (GST_ELEMENT (sink), "opening file \"%s\" (%s)", sink->filename, strerror (errno));
return FALSE;
}
GST_FLAG_SET (sink, GST_GNOMEVFSSINK_OPEN);
return TRUE;
}
static void
gst_gnomevfssink_close_file (GstGnomeVFSSink *sink)
{
GnomeVFSResult result;
g_return_if_fail (GST_FLAG_IS_SET (sink, GST_GNOMEVFSSINK_OPEN));
/* close the file */
result = gnome_vfs_close(sink->handle);
/* zero out the handle */
if (sink->handle)
g_free (sink->handle);
if (result != GNOME_VFS_OK)
{
gst_element_error (GST_ELEMENT (sink), "closing file \"%s\" (%s)", sink->filename, strerror (errno));
}
else {
GST_FLAG_UNSET (sink, GST_GNOMEVFSSINK_OPEN);
}
}
/**
* gst_gnomevfssink_chain:
* @pad: the pad this gnomevfssink is connected to
* @buf: the buffer that has to be absorbed
*
* take the buffer from the pad and write to file if it's open
*/
static void
gst_gnomevfssink_chain (GstPad *pad, GstBuffer *buf)
{
GstGnomeVFSSink *sink;
GnomeVFSResult result;
GnomeVFSFileSize bytes_written;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
sink = GST_GNOMEVFSSINK (gst_pad_get_parent (pad));
if (GST_FLAG_IS_SET (sink, GST_GNOMEVFSSINK_OPEN))
{
result = gnome_vfs_write(sink->handle, GST_BUFFER_DATA(buf), GST_BUFFER_SIZE (buf), &bytes_written);
GST_DEBUG (0, "write: %s, written_bytes: %Lu", gnome_vfs_result_to_string(result), bytes_written);
if (bytes_written < GST_BUFFER_SIZE (buf))
{
printf ("gnomevfssink : Warning : %d bytes should be written, only %Lu bytes written\n",
GST_BUFFER_SIZE (buf), bytes_written);
}
}
gst_buffer_unref (buf);
g_signal_emit (G_OBJECT (sink), gst_gnomevfssink_signals[SIGNAL_HANDOFF], 0,
sink);
}
static GstElementStateReturn
gst_gnomevfssink_change_state (GstElement *element)
{
g_return_val_if_fail (GST_IS_GNOMEVFSSINK (element), GST_STATE_FAILURE);
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, GST_GNOMEVFSSINK_OPEN))
gst_gnomevfssink_close_file (GST_GNOMEVFSSINK (element));
} else {
if (!GST_FLAG_IS_SET (element, GST_GNOMEVFSSINK_OPEN)) {
if (!gst_gnomevfssink_open_file (GST_GNOMEVFSSINK (element)))
return GST_STATE_FAILURE;
}
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
/* create an elementfactory for the aasink element */
factory = gst_element_factory_new("gnomevfssink", GST_TYPE_GNOMEVFSSINK,
&gst_gnomevfssink_details);
g_return_val_if_fail(factory != NULL, FALSE);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"gnomevfssink",
plugin_init
};