gstreamer/ext/gnomevfs/gstgnomevfssink.c
2011-04-19 14:22:42 +02:00

627 lines
18 KiB
C

/* 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>
* 2005 Tim-Philipp Müller <tim centricular 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.
*/
/**
* SECTION:element-gnomevfssink
* @see_also: #GstFileSink, #GstGnomeVFSSrc
*
* 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 GnomeVFS library. Common protocols are 'file', 'ftp', or 'smb'.
*
* Applications can connect to the #GstGnomeVFSSink::allow-overwrite signal to
* receive a callback when an existing file will be overwritten. The return
* value of the signal will determine if gnomevfssink will overwrite the
* resource or abort with an error.
*
* <refsect2>
* <title>Example launch lines</title>
* |[
* gst-launch -v filesrc location=input.xyz ! gnomevfssink location=file:///home/joe/out.xyz
* ]| The above pipeline will simply copy a local file. Instead of gnomevfssink,
* we could just as well have used the filesink element here.
* |[
* gst-launch -v filesrc location=foo.mp3 ! mad ! flacenc ! gnomevfssink 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.
* </refsect2>
*
* Last reviewed on 2006-02-28 (0.10.4)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstgnomevfssink.h"
#include "gst/gst-i18n-plugin.h"
#include <gst/gst.h>
#include <libgnomevfs/gnome-vfs.h>
#include <string.h>
#include <errno.h>
enum
{
SIGNAL_ERASE_ASK,
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_LOCATION,
ARG_URI,
ARG_HANDLE
};
static void gst_gnome_vfs_sink_finalize (GObject * obj);
static void gst_gnome_vfs_sink_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static void gst_gnome_vfs_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_gnome_vfs_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_gnome_vfs_sink_open_file (GstGnomeVFSSink * sink);
static void gst_gnome_vfs_sink_close_file (GstGnomeVFSSink * sink);
static gboolean gst_gnome_vfs_sink_start (GstBaseSink * basesink);
static gboolean gst_gnome_vfs_sink_stop (GstBaseSink * basesink);
static GstFlowReturn gst_gnome_vfs_sink_render (GstBaseSink * basesink,
GstBuffer * buffer);
static gboolean gst_gnome_vfs_sink_handle_event (GstBaseSink * basesink,
GstEvent * event);
static gboolean gst_gnome_vfs_sink_query (GstPad * pad, GstQuery * query);
static guint gst_gnome_vfs_sink_signals[LAST_SIGNAL]; /* all 0 */
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC (gst_gnome_vfs_sink_debug);
#define GST_CAT_DEFAULT gst_gnome_vfs_sink_debug
static void
gst_gnome_vfs_sink_do_init (GType type)
{
static const GInterfaceInfo urihandler_info = {
gst_gnome_vfs_sink_uri_handler_init,
NULL,
NULL
};
g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &urihandler_info);
GST_DEBUG_CATEGORY_INIT (gst_gnome_vfs_sink_debug, "gnomevfssink", 0,
"Gnome VFS sink element");
}
#define gst_gnome_vfs_sink_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstGnomeVFSSink, gst_gnome_vfs_sink,
GST_TYPE_BASE_SINK, gst_gnome_vfs_sink_do_init (g_define_type_id));
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_gnome_vfs_sink_class_init (GstGnomeVFSSinkClass * klass)
{
GstBaseSinkClass *basesink_class;
GstElementClass *gstelement_class;
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
basesink_class = (GstBaseSinkClass *) klass;
gobject_class->set_property = gst_gnome_vfs_sink_set_property;
gobject_class->get_property = gst_gnome_vfs_sink_get_property;
gobject_class->finalize = gst_gnome_vfs_sink_finalize;
g_object_class_install_property (gobject_class, ARG_LOCATION,
g_param_spec_string ("location", "File Location",
"Location of the file to write", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_URI,
g_param_spec_boxed ("uri", "GnomeVFSURI", "URI for GnomeVFS",
GST_TYPE_GNOME_VFS_URI, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_HANDLE,
g_param_spec_boxed ("handle", "GnomeVFSHandle", "Handle for GnomeVFS",
GST_TYPE_GNOME_VFS_HANDLE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstGnomeVFSSink::allow-overwrite
* @sink: the object which received the signal
* @uri: the URI to be overwritten
*
* This signal is fired when gnomevfssink is about to overwrite an
* existing resource. The application can connect to this signal and ask
* the user if the resource may be overwritten.
*
* Returns: A boolean indicating that the resource may be overwritten.
*/
gst_gnome_vfs_sink_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, GST_TYPE_GNOME_VFS_URI);
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&sinktemplate));
gst_element_class_set_details_simple (gstelement_class,
"GnomeVFS Sink", "Sink/File",
"Write a stream to a GnomeVFS URI", "Bastien Nocera <hadess@hadess.net>");
basesink_class->stop = GST_DEBUG_FUNCPTR (gst_gnome_vfs_sink_stop);
basesink_class->start = GST_DEBUG_FUNCPTR (gst_gnome_vfs_sink_start);
basesink_class->event = GST_DEBUG_FUNCPTR (gst_gnome_vfs_sink_handle_event);
basesink_class->render = GST_DEBUG_FUNCPTR (gst_gnome_vfs_sink_render);
basesink_class->get_times = NULL;
}
static void
gst_gnome_vfs_sink_finalize (GObject * obj)
{
GstGnomeVFSSink *sink = GST_GNOME_VFS_SINK (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_gnome_vfs_sink_init (GstGnomeVFSSink * sink)
{
gst_pad_set_query_function (GST_BASE_SINK_PAD (sink),
GST_DEBUG_FUNCPTR (gst_gnome_vfs_sink_query));
sink->uri = NULL;
sink->uri_name = NULL;
sink->handle = NULL;
sink->own_handle = FALSE;
sink->current_pos = 0;
GST_BASE_SINK (sink)->sync = FALSE;
}
static void
gst_gnome_vfs_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGnomeVFSSink *sink;
GstState cur_state;
sink = GST_GNOME_VFS_SINK (object);
gst_element_get_state (GST_ELEMENT (sink), &cur_state, NULL, 0);
if (cur_state == GST_STATE_PLAYING || cur_state == GST_STATE_PAUSED) {
GST_WARNING_OBJECT (sink, "cannot set property when PAUSED or PLAYING");
return;
}
GST_OBJECT_LOCK (sink);
switch (prop_id) {
case ARG_LOCATION:{
const gchar *new_location;
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;
}
new_location = g_value_get_string (value);
if (new_location) {
sink->uri_name = gst_gnome_vfs_location_to_uri_string (new_location);
sink->uri = gnome_vfs_uri_new (sink->uri_name);
}
break;
}
case ARG_URI:{
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_boxed (value)) {
sink->uri = (GnomeVFSURI *) g_value_dup_boxed (value);
sink->uri_name = gnome_vfs_uri_to_string (sink->uri, 0);
}
break;
}
case ARG_HANDLE:{
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_boxed (value);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (sink);
}
static void
gst_gnome_vfs_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGnomeVFSSink *sink;
sink = GST_GNOME_VFS_SINK (object);
GST_OBJECT_LOCK (sink);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, sink->uri_name);
break;
case ARG_URI:
g_value_set_boxed (value, sink->uri);
break;
case ARG_HANDLE:
g_value_set_boxed (value, sink->handle);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (sink);
}
static gboolean
gst_gnome_vfs_sink_open_file (GstGnomeVFSSink * sink)
{
GnomeVFSResult result;
if (sink->uri) {
/* open the file, all permissions, umask will apply */
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 | GNOME_VFS_PERM_GROUP_WRITE |
GNOME_VFS_PERM_OTHER_READ | GNOME_VFS_PERM_OTHER_WRITE);
/* 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_gnome_vfs_sink_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 | GNOME_VFS_PERM_GROUP_WRITE |
GNOME_VFS_PERM_OTHER_READ | GNOME_VFS_PERM_OTHER_WRITE);
}
}
GST_DEBUG_OBJECT (sink, "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;
}
sink->current_pos = 0;
return TRUE;
}
static void
gst_gnome_vfs_sink_close_file (GstGnomeVFSSink * sink)
{
GnomeVFSResult result;
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;
}
}
static gboolean
gst_gnome_vfs_sink_start (GstBaseSink * basesink)
{
gboolean ret;
ret = gst_gnome_vfs_sink_open_file (GST_GNOME_VFS_SINK (basesink));
return ret;
}
static gboolean
gst_gnome_vfs_sink_stop (GstBaseSink * basesink)
{
GST_DEBUG_OBJECT (basesink, "closing ...");
gst_gnome_vfs_sink_close_file (GST_GNOME_VFS_SINK (basesink));
return TRUE;
}
static gboolean
gst_gnome_vfs_sink_handle_event (GstBaseSink * basesink, GstEvent * event)
{
GstGnomeVFSSink *sink;
gboolean ret = TRUE;
sink = GST_GNOME_VFS_SINK (basesink);
GST_DEBUG_OBJECT (sink, "processing %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:{
GnomeVFSResult res;
GstFormat format;
gint64 offset;
gst_event_parse_new_segment (event, NULL, NULL, &format, &offset,
NULL, NULL);
if (format != GST_FORMAT_BYTES) {
GST_WARNING_OBJECT (sink, "ignored NEWSEGMENT event in %s format",
gst_format_get_name (format));
break;
}
GST_LOG_OBJECT (sink, "seeking to offset %" G_GINT64_FORMAT, offset);
res = gnome_vfs_seek (sink->handle, GNOME_VFS_SEEK_START, offset);
if (res != GNOME_VFS_OK) {
GST_ERROR_OBJECT (sink, "Failed to seek to offset %"
G_GINT64_FORMAT ": %s", offset, gnome_vfs_result_to_string (res));
ret = FALSE;
} else {
sink->current_pos = offset;
}
break;
}
case GST_EVENT_FLUSH_START:
case GST_EVENT_EOS:{
/* No need to flush with GnomeVfs */
break;
}
default:
break;
}
return ret;
}
static gboolean
gst_gnome_vfs_sink_query (GstPad * pad, GstQuery * query)
{
GstGnomeVFSSink *sink;
GstFormat format;
sink = GST_GNOME_VFS_SINK (GST_PAD_PARENT (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
gst_query_parse_position (query, &format, NULL);
switch (format) {
case GST_FORMAT_DEFAULT:
case GST_FORMAT_BYTES:
gst_query_set_position (query, GST_FORMAT_BYTES, sink->current_pos);
return TRUE;
default:
return FALSE;
}
case GST_QUERY_FORMATS:
gst_query_set_formats (query, 2, GST_FORMAT_DEFAULT, GST_FORMAT_BYTES);
return TRUE;
case GST_QUERY_URI:
gst_query_set_uri (query, sink->uri_name);
return TRUE;
default:
return gst_pad_query_default (pad, query);
}
}
static GstFlowReturn
gst_gnome_vfs_sink_render (GstBaseSink * basesink, GstBuffer * buf)
{
GnomeVFSFileSize written, cur_pos;
GstGnomeVFSSink *sink;
GnomeVFSResult result;
GstFlowReturn ret;
guint8 *data;
gsize size;
sink = GST_GNOME_VFS_SINK (basesink);
if (gnome_vfs_tell (sink->handle, &cur_pos) == GNOME_VFS_OK) {
/* bring up to date with current position for proper reporting */
sink->current_pos = cur_pos;
}
data = gst_buffer_map (buf, &size, NULL, GST_MAP_READ);
result = gnome_vfs_write (sink->handle, data, size, &written);
gst_buffer_unmap (buf, data, size);
switch (result) {
case GNOME_VFS_OK:{
GST_DEBUG_OBJECT (sink, "wrote %" G_GINT64_FORMAT " bytes at %"
G_GINT64_FORMAT, (gint64) written, (gint64) cur_pos);
if (written < size) {
/* FIXME: what to do here? (tpm) */
g_warning ("%s: %" G_GSIZE_FORMAT " bytes should be written, only %"
G_GUINT64_FORMAT " bytes written", G_STRLOC, size, written);
}
sink->current_pos += size;
ret = GST_FLOW_OK;
break;
}
case GNOME_VFS_ERROR_NO_SPACE:{
/* TODO: emit signal/send msg on out-of-diskspace and
* handle this gracefully (see open bug) (tpm) */
GST_ELEMENT_ERROR (sink, RESOURCE, NO_SPACE_LEFT, (NULL),
("bufsize=%u, written=%u", size, (guint) written));
ret = GST_FLOW_ERROR;
break;
}
default:{
gchar *filename = gnome_vfs_uri_to_string (sink->uri,
GNOME_VFS_URI_HIDE_PASSWORD);
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
(_("Error while writing to file \"%s\"."), filename),
("%s, bufsize=%u, written=%u", gnome_vfs_result_to_string (result),
size, (guint) written));
g_free (filename);
ret = GST_FLOW_ERROR;
break;
}
}
return ret;
}
/*** GSTURIHANDLER INTERFACE *************************************************/
static GstURIType
gst_gnome_vfs_sink_uri_get_type (void)
{
return GST_URI_SINK;
}
static gchar **
gst_gnome_vfs_sink_uri_get_protocols (void)
{
return gst_gnomevfs_get_supported_uris ();
}
static const gchar *
gst_gnome_vfs_sink_uri_get_uri (GstURIHandler * handler)
{
GstGnomeVFSSink *sink = GST_GNOME_VFS_SINK (handler);
return sink->uri_name;
}
static gboolean
gst_gnome_vfs_sink_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
GstGnomeVFSSink *sink = GST_GNOME_VFS_SINK (handler);
GstState cur_state;
gst_element_get_state (GST_ELEMENT (sink), &cur_state, NULL, 0);
if (cur_state == GST_STATE_PLAYING || cur_state == GST_STATE_PAUSED) {
GST_WARNING_OBJECT (sink, "cannot set uri when PAUSED or PLAYING");
return FALSE;
}
g_object_set (sink, "location", uri, NULL);
return TRUE;
}
static void
gst_gnome_vfs_sink_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_gnome_vfs_sink_uri_get_type;
iface->get_protocols = gst_gnome_vfs_sink_uri_get_protocols;
iface->get_uri = gst_gnome_vfs_sink_uri_get_uri;
iface->set_uri = gst_gnome_vfs_sink_uri_set_uri;
}