mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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0494c173e0
As an usecase of URI fragment, it can indicate temporal or spatial dimension of a media stream. To easily parse key-value pair, newly added gst_uri_get_media_fragment_table () API will provide the table of key-value pair likewise URI query. See also https://www.w3.org/TR/media-frags/ https://bugzilla.gnome.org/show_bug.cgi?id=774830
308 lines
12 KiB
C
308 lines
12 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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* 2014 David Waring, British Broadcasting Corporation
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* <david.waring@rd.bbc.co.uk>
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*
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* gsturi.h: Header for uri to element mappings and URI manipulation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_URI_H__
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#define __GST_URI_H__
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#include <glib.h>
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#include <glib-object.h>
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#include <gst/gstelement.h>
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#include <gst/gstconfig.h>
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#include "gstminiobject.h"
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G_BEGIN_DECLS
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GQuark gst_uri_error_quark (void);
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/**
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* GST_URI_ERROR:
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*
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* Get access to the error quark of the uri subsystem.
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*/
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#define GST_URI_ERROR gst_uri_error_quark ()
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/**
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* GstURIError:
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* @GST_URI_ERROR_UNSUPPORTED_PROTOCOL: The protocol is not supported
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* @GST_URI_ERROR_BAD_URI: There was a problem with the URI
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* @GST_URI_ERROR_BAD_STATE: Could not set or change the URI because the
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* URI handler was in a state where that is not possible or not permitted
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* @GST_URI_ERROR_BAD_REFERENCE: There was a problem with the entity that
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* the URI references
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*
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* Different URI-related errors that can occur.
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*/
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typedef enum
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{
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GST_URI_ERROR_UNSUPPORTED_PROTOCOL,
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GST_URI_ERROR_BAD_URI,
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GST_URI_ERROR_BAD_STATE,
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GST_URI_ERROR_BAD_REFERENCE
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} GstURIError;
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/**
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* GstURIType:
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* @GST_URI_UNKNOWN: The URI direction is unknown
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* @GST_URI_SINK: The URI is a consumer.
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* @GST_URI_SRC: The URI is a producer.
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*
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* The different types of URI direction.
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*/
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typedef enum {
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GST_URI_UNKNOWN,
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GST_URI_SINK,
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GST_URI_SRC
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} GstURIType;
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/**
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* GST_URI_TYPE_IS_VALID:
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* @type: A #GstURIType
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*
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* Tests if the type direction is valid.
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*/
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#define GST_URI_TYPE_IS_VALID(type) ((type) == GST_URI_SRC || (type) == GST_URI_SINK)
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/* uri handler functions */
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#define GST_TYPE_URI_HANDLER (gst_uri_handler_get_type ())
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#define GST_URI_HANDLER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_URI_HANDLER, GstURIHandler))
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#define GST_IS_URI_HANDLER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_URI_HANDLER))
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#define GST_URI_HANDLER_GET_INTERFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GST_TYPE_URI_HANDLER, GstURIHandlerInterface))
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/**
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* GstURIHandler:
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*
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* Opaque #GstURIHandler structure.
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*/
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typedef struct _GstURIHandler GstURIHandler;
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typedef struct _GstURIHandlerInterface GstURIHandlerInterface;
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/**
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* GstURIHandlerInterface:
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* @parent: The parent interface type
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* @get_type: Method to tell whether the element handles source or sink URI.
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* @get_protocols: Method to return the list of protocols handled by the element.
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* @get_uri: Method to return the URI currently handled by the element.
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* @set_uri: Method to set a new URI.
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*
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* Any #GstElement using this interface should implement these methods.
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*/
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struct _GstURIHandlerInterface {
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GTypeInterface parent;
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/* vtable */
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/*< public >*/
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/* querying capabilities */
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GstURIType (* get_type) (GType type);
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const gchar * const * (* get_protocols) (GType type);
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/* using the interface */
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gchar * (* get_uri) (GstURIHandler * handler);
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gboolean (* set_uri) (GstURIHandler * handler,
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const gchar * uri,
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GError ** error);
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};
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/* general URI functions */
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gboolean gst_uri_protocol_is_valid (const gchar * protocol);
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gboolean gst_uri_protocol_is_supported (const GstURIType type,
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const gchar *protocol);
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gboolean gst_uri_is_valid (const gchar * uri);
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gchar * gst_uri_get_protocol (const gchar * uri) G_GNUC_MALLOC;
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gboolean gst_uri_has_protocol (const gchar * uri,
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const gchar * protocol);
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gchar * gst_uri_get_location (const gchar * uri) G_GNUC_MALLOC;
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gchar * gst_uri_construct (const gchar * protocol,
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const gchar * location) G_GNUC_MALLOC;
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gchar * gst_filename_to_uri (const gchar * filename,
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GError ** error) G_GNUC_MALLOC;
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GstElement * gst_element_make_from_uri (const GstURIType type,
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const gchar * uri,
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const gchar * elementname,
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GError ** error) G_GNUC_MALLOC;
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/* accessing the interface */
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GType gst_uri_handler_get_type (void);
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GstURIType gst_uri_handler_get_uri_type (GstURIHandler * handler);
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const gchar * const * gst_uri_handler_get_protocols (GstURIHandler * handler);
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gchar * gst_uri_handler_get_uri (GstURIHandler * handler) G_GNUC_MALLOC;
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gboolean gst_uri_handler_set_uri (GstURIHandler * handler,
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const gchar * uri,
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GError ** error);
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/*
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* GstUri Type macros.
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*/
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#define GST_TYPE_URI (gst_uri_get_type ())
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#define GST_IS_URI(obj) (GST_IS_MINI_OBJECT_TYPE (obj, GST_TYPE_URI))
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#define GST_URI_CAST(obj) ((GstUri *)(obj))
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#define GST_URI_CONST_CAST(obj) ((const GstUri *)(obj))
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#define GST_URI(obj) (GST_URI_CAST(obj))
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/**
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* GstUri:
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*
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* This is a private structure that holds the various parts of a parsed URI.
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*/
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struct _GstUri;
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typedef struct _GstUri GstUri;
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/**
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* GST_URI_NO_PORT:
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*
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* Value for #GstUri<!-- -->.port to indicate no port number.
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*/
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#define GST_URI_NO_PORT 0
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/* used by GST_TYPE_URI */
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GType gst_uri_get_type (void);
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/*
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* Method definitions.
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*/
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GstUri * gst_uri_new (const gchar * scheme,
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const gchar * userinfo,
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const gchar * host,
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guint port,
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const gchar * path,
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const gchar * query,
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const gchar * fragment) G_GNUC_MALLOC;
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GstUri * gst_uri_new_with_base (GstUri * base,
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const gchar * scheme,
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const gchar * userinfo,
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const gchar * host,
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guint port,
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const gchar * path,
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const gchar * query,
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const gchar * fragment) G_GNUC_MALLOC;
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GstUri * gst_uri_from_string (const gchar * uri) G_GNUC_MALLOC;
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GstUri * gst_uri_from_string_with_base (GstUri * base,
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const gchar * uri) G_GNUC_MALLOC;
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gboolean gst_uri_equal (const GstUri * first,
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const GstUri * second);
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GstUri * gst_uri_join (GstUri * base_uri,
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GstUri * ref_uri) G_GNUC_WARN_UNUSED_RESULT;
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gchar * gst_uri_join_strings (const gchar * base_uri,
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const gchar * ref_uri) G_GNUC_MALLOC;
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gboolean gst_uri_is_writable (const GstUri * uri);
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GstUri * gst_uri_make_writable (GstUri * uri) G_GNUC_WARN_UNUSED_RESULT;
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gchar * gst_uri_to_string (const GstUri * uri) G_GNUC_MALLOC;
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gboolean gst_uri_is_normalized (const GstUri * uri);
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gboolean gst_uri_normalize (GstUri * uri);
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const gchar * gst_uri_get_scheme (const GstUri * uri);
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gboolean gst_uri_set_scheme (GstUri * uri, const gchar * scheme);
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const gchar * gst_uri_get_userinfo (const GstUri * uri);
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gboolean gst_uri_set_userinfo (GstUri * uri, const gchar * userinfo);
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const gchar * gst_uri_get_host (const GstUri * uri);
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gboolean gst_uri_set_host (GstUri * uri, const gchar * host);
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guint gst_uri_get_port (const GstUri * uri);
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gboolean gst_uri_set_port (GstUri * uri, guint port);
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gchar * gst_uri_get_path (const GstUri * uri);
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gboolean gst_uri_set_path (GstUri * uri, const gchar * path);
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gchar * gst_uri_get_path_string (const GstUri * uri);
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gboolean gst_uri_set_path_string (GstUri * uri, const gchar * path);
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GList * gst_uri_get_path_segments (const GstUri * uri);
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gboolean gst_uri_set_path_segments (GstUri * uri, GList * path_segments);
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gboolean gst_uri_append_path (GstUri * uri,
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const gchar * relative_path);
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gboolean gst_uri_append_path_segment (GstUri * uri,
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const gchar * path_segment);
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gchar * gst_uri_get_query_string (const GstUri * uri);
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gboolean gst_uri_set_query_string (GstUri * uri, const gchar * query);
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GHashTable * gst_uri_get_query_table (const GstUri * uri);
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gboolean gst_uri_set_query_table (GstUri * uri,
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GHashTable * query_table);
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gboolean gst_uri_set_query_value (GstUri * uri, const gchar * query_key,
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const gchar * query_value);
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gboolean gst_uri_remove_query_key (GstUri * uri, const gchar * query_key);
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gboolean gst_uri_query_has_key (const GstUri * uri,
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const gchar * query_key);
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const gchar * gst_uri_get_query_value (const GstUri * uri,
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const gchar * query_key);
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GList * gst_uri_get_query_keys (const GstUri * uri);
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const gchar * gst_uri_get_fragment (const GstUri * uri);
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gboolean gst_uri_set_fragment (GstUri * uri, const gchar * fragment);
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GHashTable * gst_uri_get_media_fragment_table (const GstUri * uri);
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/**
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* gst_uri_copy:
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* @uri: This #GstUri object.
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*
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* Create a new #GstUri object with the same data as this #GstUri object.
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* If @uri is %NULL then returns %NULL.
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*
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* Returns: (transfer full): A new #GstUri object which is a copy of this
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* #GstUri or %NULL.
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*/
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static inline GstUri *
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gst_uri_copy (const GstUri * uri)
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{
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return GST_URI_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (uri)));
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}
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/**
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* gst_uri_ref:
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* @uri: (transfer none): This #GstUri object.
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*
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* Add a reference to this #GstUri object. See gst_mini_object_ref() for further
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* info.
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*
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* Returns: This object with the reference count incremented.
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*/
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static inline GstUri *
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gst_uri_ref (GstUri * uri)
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{
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return GST_URI_CAST (gst_mini_object_ref (GST_MINI_OBJECT_CAST (uri)));
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}
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/**
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* gst_uri_unref:
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* @uri: (transfer full): This #GstUri object.
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*
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* Decrement the reference count to this #GstUri object.
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*
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* If the reference count drops to 0 then finalize this object.
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*
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* See gst_mini_object_unref() for further info.
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*/
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static inline void
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gst_uri_unref (GstUri * uri)
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{
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gst_mini_object_unref (GST_MINI_OBJECT_CAST (uri));
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}
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#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstUri, gst_uri_unref)
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#endif
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G_END_DECLS
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#endif /* __GST_URI_H__ */
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