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gstreamer/ext/gnomevfs/gstgnomevfssink.c
Andy Wingo e4180644b1 Many files: Null if we got it.... 
Original commit message from CVS:
2005-07-05  Andy Wingo  <wingo@pobox.com>

* Many files: Null if we got it....
2005-07-05 11:08:56 +00:00

643 lines
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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>
* 2003 Colin Walters <walters@verbum.org>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gst/gst-i18n-plugin.h"
#include "gstgnomevfs.h"
#include "gstgnomevfsuri.h"
#include <gst/gst.h>
#include <libgnomevfs/gnome-vfs.h>
#include <string.h>
#include <errno.h>
#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;
/* uri */
GnomeVFSURI *uri;
gchar *uri_name;
/* handle */
GnomeVFSHandle *handle;
/* whether we opened the handle ourselves */
gboolean own_handle;
};
struct _GstGnomeVFSSinkClass
{
GstElementClass parent_class;
/* signals */
gboolean (*erase_ask) (GstElement * element, GnomeVFSURI * uri);
};
/* GnomeVFSSink signals and args */
enum
{
/* FILL ME */
SIGNAL_ERASE_ASK,
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_LOCATION,
ARG_URI,
ARG_HANDLE
};
static void gst_gnomevfssink_base_init (gpointer g_class);
static void gst_gnomevfssink_class_init (GstGnomeVFSSinkClass * klass);
static void gst_gnomevfssink_init (GstGnomeVFSSink * gnomevfssink);
static void gst_gnomevfssink_finalize (GObject * obj);
static void gst_gnomevfssink_uri_handler_init (gpointer g_iface,
gpointer iface_data);
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, GstData * _data);
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),
gst_gnomevfssink_base_init,
NULL,
(GClassInitFunc) gst_gnomevfssink_class_init,
NULL,
NULL,
sizeof (GstGnomeVFSSink),
0,
(GInstanceInitFunc) gst_gnomevfssink_init,
};
static const GInterfaceInfo urihandler_info = {
gst_gnomevfssink_uri_handler_init,
NULL,
NULL
};
gnomevfssink_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstGnomeVFSSink",
&gnomevfssink_info, 0);
g_type_add_interface_static (gnomevfssink_type, GST_TYPE_URI_HANDLER,
&urihandler_info);
}
return gnomevfssink_type;
}
static void
gst_gnomevfssink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
static GstElementDetails gst_gnomevfssink_details =
GST_ELEMENT_DETAILS ("GnomeVFS Sink",
"Sink/File",
"Write stream to a GnomeVFS URI",
"Bastien Nocera <hadess@hadess.net>");
gst_element_class_set_details (element_class, &gst_gnomevfssink_details);
}
static gboolean
_gst_boolean_allow_overwrite_accumulator (GSignalInvocationHint * ihint,
GValue * return_accu, const GValue * handler_return, gpointer dummy)
{
gboolean allow_overwrite;
allow_overwrite = g_value_get_boolean (handler_return);
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
g_value_set_boolean (return_accu, allow_overwrite);
/* stop emission if signal doesn't allow overwriting */
return allow_overwrite;
}
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);
g_object_class_install_property (gobject_class, ARG_URI,
g_param_spec_pointer ("uri", "GnomeVFSURI", "URI for GnomeVFS",
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_HANDLE,
g_param_spec_pointer ("handle",
"GnomeVFSHandle", "Handle for GnomeVFS", G_PARAM_READWRITE));
gst_gnomevfssink_signals[SIGNAL_ERASE_ASK] =
g_signal_new ("allow-overwrite", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_CLEANUP, G_STRUCT_OFFSET (GstGnomeVFSSinkClass, erase_ask),
_gst_boolean_allow_overwrite_accumulator, NULL,
gst_marshal_BOOLEAN__POINTER, G_TYPE_BOOLEAN, 1, G_TYPE_POINTER);
gobject_class->set_property = gst_gnomevfssink_set_property;
gobject_class->get_property = gst_gnomevfssink_get_property;
gobject_class->finalize = gst_gnomevfssink_finalize;
gstelement_class->change_state = gst_gnomevfssink_change_state;
/* gnome vfs engine init */
if (gnome_vfs_initialized () == FALSE)
gnome_vfs_init ();
}
static void
gst_gnomevfssink_finalize (GObject * obj)
{
GstGnomeVFSSink *sink = GST_GNOMEVFSSINK (obj);
if (sink->uri) {
gnome_vfs_uri_unref (sink->uri);
sink->uri = NULL;
}
if (sink->uri_name) {
g_free (sink->uri_name);
sink->uri_name = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_gnomevfssink_init (GstGnomeVFSSink * gnomevfssink)
{
GstPad *pad;
GST_FLAG_SET (gnomevfssink, GST_ELEMENT_EVENT_AWARE);
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->uri = NULL;
gnomevfssink->uri_name = NULL;
gnomevfssink->handle = NULL;
gnomevfssink->own_handle = FALSE;
}
static guint
gst_gnomevfssink_uri_get_type (void)
{
return GST_URI_SINK;
}
static gchar **
gst_gnomevfssink_uri_get_protocols (void)
{
static gchar **protocols = NULL;
if (!protocols)
protocols = gst_gnomevfs_get_supported_uris ();
return protocols;
}
static const gchar *
gst_gnomevfssink_uri_get_uri (GstURIHandler * handler)
{
GstGnomeVFSSink *sink = GST_GNOMEVFSSINK (handler);
return sink->uri_name;
}
static gboolean
gst_gnomevfssink_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
GstGnomeVFSSink *sink = GST_GNOMEVFSSINK (handler);
if (GST_STATE (sink) == GST_STATE_PLAYING ||
GST_STATE (sink) == GST_STATE_PAUSED)
return FALSE;
g_object_set (G_OBJECT (sink), "location", uri, NULL);
return TRUE;
}
static void
gst_gnomevfssink_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_gnomevfssink_uri_get_type;
iface->get_protocols = gst_gnomevfssink_uri_get_protocols;
iface->get_uri = gst_gnomevfssink_uri_get_uri;
iface->set_uri = gst_gnomevfssink_uri_set_uri;
}
static void
gst_gnomevfssink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGnomeVFSSink *sink;
sink = GST_GNOMEVFSSINK (object);
switch (prop_id) {
case ARG_LOCATION:
if (GST_STATE (sink) == GST_STATE_NULL ||
GST_STATE (sink) == GST_STATE_READY) {
if (sink->uri) {
gnome_vfs_uri_unref (sink->uri);
sink->uri = NULL;
}
if (sink->uri_name) {
g_free (sink->uri_name);
sink->uri_name = NULL;
}
if (g_value_get_string (value)) {
sink->uri_name = g_strdup (g_value_get_string (value));
sink->uri = gnome_vfs_uri_new (sink->uri_name);
}
}
break;
case ARG_URI:
if (GST_STATE (sink) == GST_STATE_NULL ||
GST_STATE (sink) == GST_STATE_READY) {
if (sink->uri) {
gnome_vfs_uri_unref (sink->uri);
sink->uri = NULL;
}
if (sink->uri_name) {
g_free (sink->uri_name);
sink->uri_name = NULL;
}
if (g_value_get_pointer (value)) {
sink->uri = gnome_vfs_uri_ref (g_value_get_pointer (value));
sink->uri_name = gnome_vfs_uri_to_string (sink->uri, 0);
}
}
break;
case ARG_HANDLE:
if (GST_STATE (sink) == GST_STATE_NULL ||
GST_STATE (sink) == GST_STATE_READY) {
if (sink->uri) {
gnome_vfs_uri_unref (sink->uri);
sink->uri = NULL;
}
if (sink->uri_name) {
g_free (sink->uri_name);
sink->uri_name = NULL;
}
sink->handle = g_value_get_pointer (value);
}
break;
default:
break;
}
}
static void
gst_gnomevfssink_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstGnomeVFSSink *sink;
g_return_if_fail (GST_IS_GNOMEVFSSINK (object));
sink = GST_GNOMEVFSSINK (object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, sink->uri_name);
break;
case ARG_URI:
g_value_set_pointer (value, sink->uri);
break;
case ARG_HANDLE:
g_value_set_pointer (value, sink->handle);
break;
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);
if (sink->uri) {
/* open the file */
result = gnome_vfs_create_uri (&(sink->handle), sink->uri,
GNOME_VFS_OPEN_WRITE, TRUE,
GNOME_VFS_PERM_USER_READ | GNOME_VFS_PERM_USER_WRITE
| GNOME_VFS_PERM_GROUP_READ);
/* if the file existed and the property says to ask, then ask! */
if (result == GNOME_VFS_ERROR_FILE_EXISTS) {
gboolean erase_anyway = FALSE;
g_signal_emit (G_OBJECT (sink),
gst_gnomevfssink_signals[SIGNAL_ERASE_ASK], 0, sink->uri,
&erase_anyway);
if (erase_anyway) {
result = gnome_vfs_create_uri (&(sink->handle), sink->uri,
GNOME_VFS_OPEN_WRITE, FALSE,
GNOME_VFS_PERM_USER_READ | GNOME_VFS_PERM_USER_WRITE
| GNOME_VFS_PERM_GROUP_READ);
}
}
GST_DEBUG ("open: %s", gnome_vfs_result_to_string (result));
if (result != GNOME_VFS_OK) {
gchar *filename = gnome_vfs_uri_to_string (sink->uri,
GNOME_VFS_URI_HIDE_PASSWORD);
GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE,
(_("Could not open vfs file \"%s\" for writing: %s."),
filename, gnome_vfs_result_to_string (result)), GST_ERROR_SYSTEM);
g_free (filename);
return FALSE;
}
sink->own_handle = TRUE;
} else if (!sink->handle) {
GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, (_("No filename given")),
(NULL));
return FALSE;
} else {
sink->own_handle = 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));
if (sink->own_handle) {
/* close the file */
result = gnome_vfs_close (sink->handle);
if (result != GNOME_VFS_OK) {
gchar *filename = gnome_vfs_uri_to_string (sink->uri,
GNOME_VFS_URI_HIDE_PASSWORD);
GST_ELEMENT_ERROR (sink, RESOURCE, CLOSE,
(_("Could not close vfs file \"%s\"."), filename), GST_ERROR_SYSTEM);
g_free (filename);
}
sink->own_handle = FALSE;
sink->handle = NULL;
}
GST_FLAG_UNSET (sink, GST_GNOMEVFSSINK_OPEN);
}
/**
* gst_gnomevfssink_handle_event:
* @sink: reference to GstGnomeVFSSink
* @event: the event to dispatch
*
* Handles the event appropriately (seek, end-of-file, ...)
*
* Return value: whether to continue processing or not.
*/
static gboolean
gst_gnomevfssink_handle_event (GstGnomeVFSSink * sink, GstEvent * event)
{
GstEventType type;
gboolean res = FALSE;
type = GST_EVENT_TYPE (event);
switch (type) {
case GST_EVENT_EOS:
gst_gnomevfssink_close_file (sink);
gst_element_set_eos (GST_ELEMENT (sink));
break;
case GST_EVENT_DISCONTINUOUS:{
GnomeVFSResult res;
gint64 offset;
if (gst_event_discont_get_value (event, GST_FORMAT_BYTES, &offset)) {
if ((res = gnome_vfs_seek (sink->handle, GNOME_VFS_SEEK_START,
offset)) != GNOME_VFS_OK) {
GST_ERROR_OBJECT (sink, "Failed to seek to offset %"
G_GINT64_FORMAT ": %s", offset, gnome_vfs_result_to_string (res));
}
}
res = TRUE;
break;
}
case GST_EVENT_SEEK:{
GnomeVFSResult res;
GnomeVFSSeekPosition method;
gint64 offset;
if (GST_EVENT_SEEK_FORMAT (event) != GST_FORMAT_BYTES) {
GST_ERROR_OBJECT (sink, "Can only seek in bytes");
break;
}
switch (GST_EVENT_SEEK_METHOD (event)) {
case GST_SEEK_METHOD_SET:
method = GNOME_VFS_SEEK_START;
break;
case GST_SEEK_METHOD_CUR:
method = GNOME_VFS_SEEK_CURRENT;
break;
case GST_SEEK_METHOD_END:
method = GNOME_VFS_SEEK_END;
break;
default:
GST_ERROR_OBJECT (sink, "Unknown seek method %d",
GST_EVENT_SEEK_METHOD (event));
goto end;
break;
}
offset = GST_EVENT_SEEK_OFFSET (event);
if (GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH) {
/* how does Gnome-VFS flush? */
}
if ((res = gnome_vfs_seek (sink->handle, method, offset)) != GNOME_VFS_OK) {
GST_ERROR_OBJECT (sink, "Failed to seek to offset %"
G_GINT64_FORMAT " with method %d: %s", offset, method,
gnome_vfs_result_to_string (res));
}
res = TRUE;
break;
}
case GST_EVENT_FLUSH:
/* how does Gnome-VFS flush? */
break;
default:
GST_WARNING ("Unhandled event type %d", type);
gst_pad_event_default (gst_element_get_pad (GST_ELEMENT (sink), "sink"),
event);
event = NULL;
break;
}
end:
if (event)
gst_event_unref (event);
return res;
}
/**
* 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, GstData * _data)
{
GstBuffer *buf;
GstGnomeVFSSink *sink;
GnomeVFSResult result;
GnomeVFSFileSize bytes_written;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
sink = GST_GNOMEVFSSINK (gst_pad_get_parent (pad));
if (GST_FLAG_IS_SET (sink, GST_GNOMEVFSSINK_OPEN)) {
if (GST_IS_EVENT (_data)) {
gst_gnomevfssink_handle_event (sink, GST_EVENT (_data));
return;
}
buf = GST_BUFFER (_data);
g_return_if_fail (buf != NULL);
result =
gnome_vfs_write (sink->handle, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf), &bytes_written);
GST_DEBUG ("write: %s, written_bytes: %" G_GUINT64_FORMAT,
gnome_vfs_result_to_string (result), bytes_written);
if (bytes_written < GST_BUFFER_SIZE (buf)) {
printf ("gnomevfssink : Warning : %d bytes should be written, only %"
G_GUINT64_FORMAT " bytes written\n", GST_BUFFER_SIZE (buf),
bytes_written);
}
}
gst_data_unref (_data);
}
static GstElementStateReturn
gst_gnomevfssink_change_state (GstElement * element)
{
g_return_val_if_fail (GST_IS_GNOMEVFSSINK (element), GST_STATE_FAILURE);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_READY_TO_PAUSED:
if (!GST_FLAG_IS_SET (element, GST_GNOMEVFSSINK_OPEN)) {
if (!gst_gnomevfssink_open_file (GST_GNOMEVFSSINK (element)))
return GST_STATE_FAILURE;
}
break;
case GST_STATE_PAUSED_TO_READY:
if (GST_FLAG_IS_SET (element, GST_GNOMEVFSSINK_OPEN))
gst_gnomevfssink_close_file (GST_GNOMEVFSSINK (element));
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
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