/* GStreamer * * Copyright (C) 2007 Rene Stadler <mail@renestadler.de> * Copyright (C) 2007 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstgio.h" #include "gstgiosink.h" #include "gstgiosrc.h" #include "gstgiostreamsink.h" #include "gstgiostreamsrc.h" #include <string.h> GST_DEBUG_CATEGORY_STATIC (gst_gio_debug); #define GST_CAT_DEFAULT gst_gio_debug /* @func_name: Name of the GIO function, for debugging messages. * @err: Error location. *err may be NULL, but err must be non-NULL. * @ret: Flow return location. May be NULL. Is set to either #GST_FLOW_ERROR * or #GST_FLOW_FLUSHING. * * Returns: TRUE to indicate a handled error. Error at given location err will * be freed and *err will be set to NULL. A FALSE return indicates an unhandled * error: The err location is unchanged and guaranteed to be != NULL. ret, if * given, is set to GST_FLOW_ERROR. */ gboolean gst_gio_error (gpointer element, const gchar * func_name, GError ** err, GstFlowReturn * ret) { gboolean handled = TRUE; if (ret) *ret = GST_FLOW_ERROR; if (GST_GIO_ERROR_MATCHES (*err, CANCELLED)) { GST_DEBUG_OBJECT (element, "blocking I/O call cancelled (%s)", func_name); if (ret) *ret = GST_FLOW_FLUSHING; } else if (*err != NULL) { handled = FALSE; } else { GST_ELEMENT_ERROR (element, LIBRARY, FAILED, (NULL), ("%s call failed without error set", func_name)); } if (handled) g_clear_error (err); return handled; } GstFlowReturn gst_gio_seek (gpointer element, GSeekable * stream, guint64 offset, GCancellable * cancel) { gboolean success; GstFlowReturn ret; GError *err = NULL; GST_LOG_OBJECT (element, "seeking to offset %" G_GINT64_FORMAT, offset); success = g_seekable_seek (stream, offset, G_SEEK_SET, cancel, &err); if (success) ret = GST_FLOW_OK; else if (!gst_gio_error (element, "g_seekable_seek", &err, &ret)) { GST_ELEMENT_ERROR (element, RESOURCE, SEEK, (NULL), ("Could not seek: %s", err->message)); g_clear_error (&err); } return ret; } static gpointer _internal_get_supported_protocols (gpointer data) { const gchar *const *schemes; gchar **our_schemes; guint num; gint i, j; schemes = g_vfs_get_supported_uri_schemes (g_vfs_get_default ()); if (schemes != NULL) num = g_strv_length ((gchar **) schemes); else num = 0; if (num == 0) { GST_WARNING ("No GIO supported URI schemes found"); return NULL; } our_schemes = g_new0 (gchar *, num + 1); /* - Filter http/https as we can't support the icy stuff with GIO. * Use souphttpsrc if you need that. * - Filter cdda as it doesn't support musicbrainz stuff and everything * else one expects from a cdda source. Use cdparanoiasrc or cdiosrc * for cdda. */ for (i = 0, j = 0; i < num; i++) { if (strcmp (schemes[i], "http") == 0 || strcmp (schemes[i], "https") == 0 || strcmp (schemes[i], "cdda") == 0) continue; our_schemes[j] = g_strdup (schemes[i]); j++; } return our_schemes; } static gchar ** gst_gio_get_supported_protocols (void) { static GOnce once = G_ONCE_INIT; g_once (&once, _internal_get_supported_protocols, NULL); return (gchar **) once.retval; } static GstURIType gst_gio_uri_handler_get_type_sink (GType type) { return GST_URI_SINK; } static GstURIType gst_gio_uri_handler_get_type_src (GType type) { return GST_URI_SRC; } static const gchar *const * gst_gio_uri_handler_get_protocols (GType type) { static const gchar *const *protocols = NULL; if (!protocols) protocols = (const gchar * const *) gst_gio_get_supported_protocols (); return protocols; } static gchar * gst_gio_uri_handler_get_uri (GstURIHandler * handler) { GstElement *element = GST_ELEMENT (handler); gchar *uri; g_return_val_if_fail (GST_IS_ELEMENT (element), NULL); g_object_get (G_OBJECT (element), "location", &uri, NULL); return uri; } static gboolean gst_gio_uri_handler_set_uri (GstURIHandler * handler, const gchar * uri, GError ** error) { GstElement *element = GST_ELEMENT (handler); g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE); if (GST_STATE (element) == GST_STATE_PLAYING || GST_STATE (element) == GST_STATE_PAUSED) { g_set_error (error, GST_URI_ERROR, GST_URI_ERROR_BAD_STATE, "Changing the 'location' property while the element is running is " "not supported"); return FALSE; } g_object_set (G_OBJECT (element), "location", uri, NULL); return TRUE; } static void gst_gio_uri_handler_init (gpointer g_iface, gpointer iface_data) { GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface; gboolean sink = GPOINTER_TO_INT (iface_data); /* See in do_init below. */ if (sink) iface->get_type = gst_gio_uri_handler_get_type_sink; else iface->get_type = gst_gio_uri_handler_get_type_src; iface->get_protocols = gst_gio_uri_handler_get_protocols; iface->get_uri = gst_gio_uri_handler_get_uri; iface->set_uri = gst_gio_uri_handler_set_uri; } void gst_gio_uri_handler_do_init (GType type) { GInterfaceInfo uri_handler_info = { gst_gio_uri_handler_init, NULL, NULL }; /* Store information for uri_handler_init to use for distinguishing the * element types. This lets us use a single interface implementation for both * classes. */ uri_handler_info.interface_data = GINT_TO_POINTER (g_type_is_a (type, GST_TYPE_BASE_SINK)); g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &uri_handler_info); } static gboolean plugin_init (GstPlugin * plugin) { gboolean ret = TRUE; GST_DEBUG_CATEGORY_INIT (gst_gio_debug, "gio", 0, "GIO elements"); gst_plugin_add_dependency_simple (plugin, NULL, GIO_MODULE_DIR, NULL, GST_PLUGIN_DEPENDENCY_FLAG_NONE); gst_plugin_add_dependency_simple (plugin, "LD_LIBRARY_PATH", GIO_LIBDIR, "gvfsd", GST_PLUGIN_DEPENDENCY_FLAG_NONE); /* FIXME: Rank is MARGINAL for now, should be at least SECONDARY+1 in the future * to replace gnomevfssink/src. For testing purposes PRIMARY+1 one makes sense * so it gets autoplugged and preferred over filesrc/sink. */ ret &= gst_element_register (plugin, "giosink", GST_RANK_SECONDARY, GST_TYPE_GIO_SINK); ret &= gst_element_register (plugin, "giosrc", GST_RANK_SECONDARY, GST_TYPE_GIO_SRC); ret &= gst_element_register (plugin, "giostreamsink", GST_RANK_NONE, GST_TYPE_GIO_STREAM_SINK); ret &= gst_element_register (plugin, "giostreamsrc", GST_RANK_NONE, GST_TYPE_GIO_STREAM_SRC); return ret; } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, gio, "GIO elements", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)