diff -r 567bb019e3e3 -r 7e817e7e631c gst_plugins_base/ext/gio/gstgiosrc.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gst_plugins_base/ext/gio/gstgiosrc.c Wed Sep 01 12:16:41 2010 +0100 @@ -0,0 +1,238 @@ +/* GStreamer + * + * Copyright (C) 2007 Rene Stadler + * Copyright (C) 2007 Sebastian Dröge + * + * 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-giosrc + * @short_description: Read from any GIO-supported location + * @see_also: #GstFileSrc, #GstGnomeVFSSrc, #GstGioSink + * + * + * + * This plugin reads data from 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', 'http', + * 'ftp', or 'smb'. + * + * + * Example pipeline: + * + * gst-launch -v giosrc location=file:///home/joe/foo.xyz ! fakesink + * + * The above pipeline will simply read a local file and do nothing with the + * data read. Instead of giosrc, we could just as well have used the + * filesrc element here. + * + * + * Another example pipeline: + * + * gst-launch -v giosrc location=smb://othercomputer/foo.xyz ! filesink location=/home/joe/foo.xyz + * + * The above pipeline will copy a file from a remote host to the local file + * system using the Samba protocol. + * + * + * Yet another example pipeline: + * + * gst-launch -v giosrc location=http://music.foobar.com/demo.mp3 ! mad ! audioconvert ! audioresample ! alsasink + * + * The above pipeline will read and decode and play an mp3 file from a + * web server using the http protocol. + * + * + */ + +/* 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 +#endif + +#include "gstgiosrc.h" + +GST_DEBUG_CATEGORY_STATIC (gst_gio_src_debug); +#define GST_CAT_DEFAULT gst_gio_src_debug + +enum +{ + ARG_0, + ARG_LOCATION +}; + +GST_BOILERPLATE_FULL (GstGioSrc, gst_gio_src, GstGioBaseSrc, + GST_TYPE_GIO_BASE_SRC, gst_gio_uri_handler_do_init); + +static void gst_gio_src_finalize (GObject * object); +static void gst_gio_src_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec); +static void gst_gio_src_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); +static gboolean gst_gio_src_start (GstBaseSrc * base_src); + +static void +gst_gio_src_base_init (gpointer gclass) +{ + static GstElementDetails element_details = { + "GIO source", + "Source/File", + "Read from any GIO-supported location", + "Ren\xc3\xa9 Stadler , " + "Sebastian Dröge " + }; + GstElementClass *element_class = GST_ELEMENT_CLASS (gclass); + + GST_DEBUG_CATEGORY_INIT (gst_gio_src_debug, "gio_src", 0, "GIO source"); + + gst_element_class_set_details (element_class, &element_details); +} + +static void +gst_gio_src_class_init (GstGioSrcClass * klass) +{ + GObjectClass *gobject_class; + GstElementClass *gstelement_class; + GstBaseSrcClass *gstbasesrc_class; + + gobject_class = (GObjectClass *) klass; + gstelement_class = (GstElementClass *) klass; + gstbasesrc_class = (GstBaseSrcClass *) klass; + + gobject_class->finalize = gst_gio_src_finalize; + gobject_class->set_property = gst_gio_src_set_property; + gobject_class->get_property = gst_gio_src_get_property; + + g_object_class_install_property (gobject_class, ARG_LOCATION, + g_param_spec_string ("location", "Location", "URI location to read from", + NULL, G_PARAM_READWRITE)); + + gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_gio_src_start); +} + +static void +gst_gio_src_init (GstGioSrc * src, GstGioSrcClass * gclass) +{ +} + +static void +gst_gio_src_finalize (GObject * object) +{ + GstGioSrc *src = GST_GIO_SRC (object); + + if (src->location) { + g_free (src->location); + src->location = NULL; + } + + GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object)); +} + +static void +gst_gio_src_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstGioSrc *src = GST_GIO_SRC (object); + + switch (prop_id) { + case ARG_LOCATION: + if (GST_STATE (src) == GST_STATE_PLAYING || + GST_STATE (src) == GST_STATE_PAUSED) + break; + + g_free (src->location); + src->location = g_strdup (g_value_get_string (value)); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_gio_src_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstGioSrc *src = GST_GIO_SRC (object); + + switch (prop_id) { + case ARG_LOCATION: + g_value_set_string (value, src->location); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static gboolean +gst_gio_src_start (GstBaseSrc * base_src) +{ + GstGioSrc *src = GST_GIO_SRC (base_src); + GFile *file; + GError *err = NULL; + GInputStream *stream; + GCancellable *cancel = GST_GIO_BASE_SRC (src)->cancel; + + if (src->location == NULL) { + GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), ("No location given")); + return FALSE; + } + + file = g_file_new_for_uri (src->location); + + if (file == NULL) { + GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), + ("Malformed URI or protocol not supported (%s)", src->location)); + return FALSE; + } + + stream = G_INPUT_STREAM (g_file_read (file, cancel, &err)); + + g_object_unref (file); + + if (stream == NULL && !gst_gio_error (src, "g_file_read", &err, NULL)) { + + if (GST_GIO_ERROR_MATCHES (err, NOT_FOUND)) { + GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL), + ("Could not open location %s for reading: %s", + src->location, err->message)); + } else { + GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), + ("Could not open location %s for reading: %s", + src->location, err->message)); + } + + g_clear_error (&err); + return FALSE; + } else if (stream == NULL) { + return FALSE; + } + + gst_gio_base_src_set_stream (GST_GIO_BASE_SRC (src), stream); + + GST_DEBUG_OBJECT (src, "opened location %s", src->location); + + return GST_BASE_SRC_CLASS (parent_class)->start (base_src); +}