--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/gstreamer_core/gst/gstutils.h Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,920 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2000 Wim Taymans <wtay@chello.be>
+ * 2002 Thomas Vander Stichele <thomas@apestaart.org>
+ *
+ * gstutils.h: Header for various utility functions
+ *
+ * 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.
+ */
+
+
+#ifndef __GST_UTILS_H__
+#define __GST_UTILS_H__
+
+#include <glib.h>
+#include <gst/gstbin.h>
+
+G_BEGIN_DECLS
+
+void gst_util_set_value_from_string (GValue *value, const gchar *value_str);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_util_set_object_arg (GObject *object, const gchar *name, const gchar *value);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_util_dump_mem (const guchar *mem, guint size);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+guint64 gst_util_gdouble_to_guint64 (gdouble value);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gdouble gst_util_guint64_to_gdouble (guint64 value);
+
+/**
+ * gst_guint64_to_gdouble:
+ * @value: the #guint64 value to convert
+ *
+ * Convert @value to a gdouble.
+ *
+ * Returns: @value converted to a #gdouble.
+ */
+
+/**
+ * gst_gdouble_to_guint64:
+ * @value: the #gdouble value to convert
+ *
+ * Convert @value to a guint64.
+ *
+ * Returns: @value converted to a #guint64.
+ */
+#ifdef WIN32
+#define gst_gdouble_to_guint64(value) gst_util_gdouble_to_guint64(value)
+#define gst_guint64_to_gdouble(value) gst_util_guint64_to_gdouble(value)
+#else
+#define gst_gdouble_to_guint64(value) ((guint64) (value))
+#define gst_guint64_to_gdouble(value) ((gdouble) (value))
+#endif
+
+guint64 gst_util_uint64_scale (guint64 val, guint64 num, guint64 denom);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+guint64 gst_util_uint64_scale_int (guint64 val, gint num, gint denom);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+void gst_print_pad_caps (GString *buf, gint indent, GstPad *pad);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_print_element_args (GString *buf, gint indent, GstElement *element);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+
+GType gst_type_register_static_full (GType parent_type,
+ const gchar *type_name,
+ guint class_size,
+ GBaseInitFunc base_init,
+ GBaseFinalizeFunc base_finalize,
+ GClassInitFunc class_init,
+ GClassFinalizeFunc class_finalize,
+ gconstpointer class_data,
+ guint instance_size,
+ guint16 n_preallocs,
+ GInstanceInitFunc instance_init,
+ const GTypeValueTable *value_table,
+ GTypeFlags flags);
+
+
+/* Macros for defining classes. Ideas taken from Bonobo, which took theirs
+ from Nautilus and GOB. */
+
+/**
+ * GST_BOILERPLATE_FULL:
+ * @type: the name of the type struct
+ * @type_as_function: the prefix for the functions
+ * @parent_type: the parent type struct name
+ * @parent_type_macro: the parent type macro
+ * @additional_initializations: function pointer in the form of
+ * void additional_initializations (GType type) that can be used for
+ * initializing interfaces and the like
+ *
+ * Define the boilerplate type stuff to reduce typos and code size. Defines
+ * the get_type method and the parent_class static variable.
+ *
+ * <informalexample>
+ * <programlisting>
+ * GST_BOILERPLATE_FULL (GstFdSink, gst_fdsink, GstElement, GST_TYPE_ELEMENT, _do_init);
+ * </programlisting>
+ * </informalexample>
+ */
+#define GST_BOILERPLATE_FULL(type, type_as_function, parent_type, parent_type_macro, additional_initializations) \
+ \
+static void type_as_function ## _base_init (gpointer g_class); \
+static void type_as_function ## _class_init (type ## Class *g_class);\
+static void type_as_function ## _init (type *object, \
+ type ## Class *g_class);\
+static parent_type ## Class *parent_class = NULL; \
+static void \
+type_as_function ## _class_init_trampoline (gpointer g_class, \
+ gpointer data) \
+{ \
+ parent_class = (parent_type ## Class *) \
+ g_type_class_peek_parent (g_class); \
+ type_as_function ## _class_init ((type ## Class *)g_class); \
+} \
+ \
+GType type_as_function ## _get_type (void); \
+ \
+__declspec(dllexport) GType \
+type_as_function ## _get_type (void) \
+{ \
+ static GType object_type = 0; \
+ if (G_UNLIKELY (object_type == 0)) { \
+ object_type = gst_type_register_static_full (parent_type_macro, #type, \
+ sizeof (type ## Class), \
+ type_as_function ## _base_init, \
+ NULL, /* base_finalize */ \
+ type_as_function ## _class_init_trampoline, \
+ NULL, /* class_finalize */ \
+ NULL, /* class_data */ \
+ sizeof (type), \
+ 0, /* n_preallocs */ \
+ (GInstanceInitFunc) type_as_function ## _init, \
+ NULL, \
+ (GTypeFlags) 0); \
+ additional_initializations (object_type); \
+ } \
+ return object_type; \
+}
+
+#define __GST_DO_NOTHING(type) /* NOP */
+
+/**
+ * GST_BOILERPLATE:
+ * @type: the name of the type struct
+ * @type_as_function: the prefix for the functions
+ * @parent_type: the parent type struct name
+ * @parent_type_macro: the parent type macro
+ *
+ * Define the boilerplate type stuff to reduce typos and code size. Defines
+ * the get_type method and the parent_class static variable.
+ *
+ * <informalexample>
+ * <programlisting>
+ * GST_BOILERPLATE (GstFdSink, gst_fdsink, GstElement, GST_TYPE_ELEMENT);
+ * </programlisting>
+ * </informalexample>
+ */
+#define GST_BOILERPLATE(type,type_as_function,parent_type,parent_type_macro) \
+ GST_BOILERPLATE_FULL (type, type_as_function, parent_type, parent_type_macro, \
+ __GST_DO_NOTHING)
+
+/* Like GST_BOILERPLATE, but makes the type 1) implement an interface, and 2)
+ * implement GstImplementsInterface for that type
+ *
+ * After this you will need to implement interface_as_function ## _supported
+ * and interface_as_function ## _interface_init
+ */
+/**
+ * GST_BOILERPLATE_WITH_INTERFACE:
+ * @type: the name of the type struct
+ * @type_as_function: the prefix for the functions
+ * @parent_type: the parent type struct name
+ * @parent_type_as_macro: the parent type macro
+ * @interface_type: the name of the interface type struct
+ * @interface_type_as_macro: the interface type macro
+ * @interface_as_function: the interface function name prefix
+ *
+ * Like GST_BOILERPLATE, but makes the type 1) implement an interface, and 2)
+ * implement GstImplementsInterface for that type.
+ *
+ * After this you will need to implement interface_as_function ## _supported
+ * and interface_as_function ## _interface_init
+ */
+#define GST_BOILERPLATE_WITH_INTERFACE(type, type_as_function, \
+ parent_type, parent_type_as_macro, interface_type, \
+ interface_type_as_macro, interface_as_function) \
+ \
+static void interface_as_function ## _interface_init (interface_type ## Class *klass); \
+static gboolean interface_as_function ## _supported (type *object, GType iface_type); \
+ \
+static void \
+type_as_function ## _implements_interface_init (GstImplementsInterfaceClass *klass) \
+{ \
+ klass->supported = (gboolean (*)(GstImplementsInterface*, GType))interface_as_function ## _supported; \
+} \
+ \
+static void \
+type_as_function ## _init_interfaces (GType type) \
+{ \
+ static const GInterfaceInfo implements_iface_info = { \
+ (GInterfaceInitFunc) type_as_function ## _implements_interface_init,\
+ NULL, \
+ NULL, \
+ }; \
+ static const GInterfaceInfo iface_info = { \
+ (GInterfaceInitFunc) interface_as_function ## _interface_init, \
+ NULL, \
+ NULL, \
+ }; \
+ \
+ g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE, \
+ &implements_iface_info); \
+ g_type_add_interface_static (type, interface_type_as_macro, \
+ &iface_info); \
+} \
+ \
+GST_BOILERPLATE_FULL (type, type_as_function, parent_type, \
+ parent_type_as_macro, type_as_function ## _init_interfaces)
+
+/**
+ * GST_CALL_PARENT:
+ * @parent_class_cast: the name of the class cast macro for the parent type
+ * @name: name of the function to call
+ * @args: arguments enclosed in '( )'
+ *
+ * Just call the parent handler. This assumes that there is a variable
+ * named parent_class that points to the (duh!) parent class. Note that
+ * this macro is not to be used with things that return something, use
+ * the _WITH_DEFAULT version for that
+ */
+#define GST_CALL_PARENT(parent_class_cast, name, args) \
+ ((parent_class_cast(parent_class)->name != NULL) ? \
+ parent_class_cast(parent_class)->name args : (void) 0)
+
+/**
+ * GST_CALL_PARENT_WITH_DEFAULT:
+ * @parent_class_cast: the name of the class cast macro for the parent type
+ * @name: name of the function to call
+ * @args: arguments enclosed in '( )'
+ * @def_return: default result
+ *
+ * Same as GST_CALL_PARENT(), but in case there is no implementation, it
+ * evaluates to @def_return.
+ */
+#define GST_CALL_PARENT_WITH_DEFAULT(parent_class_cast, name, args, def_return)\
+ ((parent_class_cast(parent_class)->name != NULL) ? \
+ parent_class_cast(parent_class)->name args : def_return)
+
+/* Define possibly unaligned memory access method whether the type of
+ * architecture. */
+#if GST_HAVE_UNALIGNED_ACCESS
+
+#define _GST_GET(__data, __size, __end) \
+ (GUINT##__size##_FROM_##__end (* ((guint##__size *) (__data))))
+
+/**
+ * GST_READ_UINT64_BE:
+ * @data: memory location
+ *
+ * Read a 64 bit unsigned integer value in big endian format from the memory buffer.
+ */
+#define GST_READ_UINT64_BE(data) _GST_GET (data, 64, BE)
+/**
+ * GST_READ_UINT64_LE:
+ * @data: memory location
+ *
+ * Read a 64 bit unsigned integer value in little endian format from the memory buffer.
+ */
+#define GST_READ_UINT64_LE(data) _GST_GET (data, 64, LE)
+/**
+ * GST_READ_UINT32_BE:
+ * @data: memory location
+ *
+ * Read a 32 bit unsigned integer value in big endian format from the memory buffer.
+ */
+#define GST_READ_UINT32_BE(data) _GST_GET (data, 32, BE)
+/**
+ * GST_READ_UINT32_LE:
+ * @data: memory location
+ *
+ * Read a 32 bit unsigned integer value in little endian format from the memory buffer.
+ */
+#define GST_READ_UINT32_LE(data) _GST_GET (data, 32, LE)
+/**
+ * GST_READ_UINT16_BE:
+ * @data: memory location
+ *
+ * Read a 16 bit unsigned integer value in big endian format from the memory buffer.
+ */
+#define GST_READ_UINT16_BE(data) _GST_GET (data, 16, BE)
+/**
+ * GST_READ_UINT16_LE:
+ * @data: memory location
+ *
+ * Read a 16 bit unsigned integer value in little endian format from the memory buffer.
+ */
+#define GST_READ_UINT16_LE(data) _GST_GET (data, 16, LE)
+/**
+ * GST_READ_UINT8:
+ * @data: memory location
+ *
+ * Read an 8 bit unsigned integer value from the memory buffer.
+ */
+#define GST_READ_UINT8(data) (* ((guint8 *) (data)))
+
+#define _GST_PUT(__data, __size, __end, __num) \
+ ((* (guint##__size *) (__data)) = GUINT##__size##_TO_##__end (__num))
+
+/**
+ * GST_WRITE_UINT64_BE:
+ * @data: memory location
+ * @num: value to store
+ *
+ * Store a 64 bit unsigned integer value in big endian format into the memory buffer.
+ */
+#define GST_WRITE_UINT64_BE(data, num) _GST_PUT(data, 64, BE, num)
+/**
+ * GST_WRITE_UINT64_LE:
+ * @data: memory location
+ * @num: value to store
+ *
+ * Store a 64 bit unsigned integer value in little endian format into the memory buffer.
+ */
+#define GST_WRITE_UINT64_LE(data, num) _GST_PUT(data, 64, LE, num)
+/**
+ * GST_WRITE_UINT32_BE:
+ * @data: memory location
+ * @num: value to store
+ *
+ * Store a 32 bit unsigned integer value in big endian format into the memory buffer.
+ */
+#define GST_WRITE_UINT32_BE(data, num) _GST_PUT(data, 32, BE, num)
+/**
+ * GST_WRITE_UINT32_LE:
+ * @data: memory location
+ * @num: value to store
+ *
+ * Store a 32 bit unsigned integer value in little endian format into the memory buffer.
+ */
+#define GST_WRITE_UINT32_LE(data, num) _GST_PUT(data, 32, LE, num)
+/**
+ * GST_WRITE_UINT16_BE:
+ * @data: memory location
+ * @num: value to store
+ *
+ * Store a 16 bit unsigned integer value in big endian format into the memory buffer.
+ */
+#define GST_WRITE_UINT16_BE(data, num) _GST_PUT(data, 16, BE, num)
+/**
+ * GST_WRITE_UINT16_LE:
+ * @data: memory location
+ * @num: value to store
+ *
+ * Store a 16 bit unsigned integer value in little endian format into the memory buffer.
+ */
+#define GST_WRITE_UINT16_LE(data, num) _GST_PUT(data, 16, LE, num)
+/**
+ * GST_WRITE_UINT8:
+ * @data: memory location
+ * @num: value to store
+ *
+ * Store an 8 bit unsigned integer value into the memory buffer.
+ */
+#define GST_WRITE_UINT8(data, num) ((* (guint8 *) (data)) = (num))
+
+#else /* GST_HAVE_UNALIGNED_ACCESS */
+
+#define _GST_GET(__data, __idx, __size, __shift) \
+ (((guint##__size) (((guint8 *) (__data))[__idx])) << __shift)
+
+#define GST_READ_UINT64_BE(data) (_GST_GET (data, 0, 64, 56) | \
+ _GST_GET (data, 1, 64, 48) | \
+ _GST_GET (data, 2, 64, 40) | \
+ _GST_GET (data, 3, 64, 32) | \
+ _GST_GET (data, 4, 64, 24) | \
+ _GST_GET (data, 5, 64, 16) | \
+ _GST_GET (data, 6, 64, 8) | \
+ _GST_GET (data, 7, 64, 0))
+
+#define GST_READ_UINT64_LE(data) (_GST_GET (data, 7, 64, 56) | \
+ _GST_GET (data, 6, 64, 48) | \
+ _GST_GET (data, 5, 64, 40) | \
+ _GST_GET (data, 4, 64, 32) | \
+ _GST_GET (data, 3, 64, 24) | \
+ _GST_GET (data, 2, 64, 16) | \
+ _GST_GET (data, 1, 64, 8) | \
+ _GST_GET (data, 0, 64, 0))
+
+#define GST_READ_UINT32_BE(data) (_GST_GET (data, 0, 32, 24) | \
+ _GST_GET (data, 1, 32, 16) | \
+ _GST_GET (data, 2, 32, 8) | \
+ _GST_GET (data, 3, 32, 0))
+
+#define GST_READ_UINT32_LE(data) (_GST_GET (data, 3, 32, 24) | \
+ _GST_GET (data, 2, 32, 16) | \
+ _GST_GET (data, 1, 32, 8) | \
+ _GST_GET (data, 0, 32, 0))
+
+#define GST_READ_UINT16_BE(data) (_GST_GET (data, 0, 16, 8) | \
+ _GST_GET (data, 1, 16, 0))
+
+#define GST_READ_UINT16_LE(data) (_GST_GET (data, 1, 16, 8) | \
+ _GST_GET (data, 0, 16, 0))
+
+#define GST_READ_UINT8(data) (_GST_GET (data, 0, 8, 0))
+
+#define _GST_PUT(__data, __idx, __size, __shift, __num) \
+ (((guint8 *) (__data))[__idx] = (((guint##__size) __num) >> __shift) & 0xff)
+
+#define GST_WRITE_UINT64_BE(data, num) do { \
+ _GST_PUT (data, 0, 64, 56, num); \
+ _GST_PUT (data, 1, 64, 48, num); \
+ _GST_PUT (data, 2, 64, 40, num); \
+ _GST_PUT (data, 3, 64, 32, num); \
+ _GST_PUT (data, 4, 64, 24, num); \
+ _GST_PUT (data, 5, 64, 16, num); \
+ _GST_PUT (data, 6, 64, 8, num); \
+ _GST_PUT (data, 7, 64, 0, num); \
+ } while (0)
+
+#define GST_WRITE_UINT64_LE(data, num) do { \
+ _GST_PUT (data, 0, 64, 0, num); \
+ _GST_PUT (data, 1, 64, 8, num); \
+ _GST_PUT (data, 2, 64, 16, num); \
+ _GST_PUT (data, 3, 64, 24, num); \
+ _GST_PUT (data, 4, 64, 32, num); \
+ _GST_PUT (data, 5, 64, 40, num); \
+ _GST_PUT (data, 6, 64, 48, num); \
+ _GST_PUT (data, 7, 64, 56, num); \
+ } while (0)
+
+#define GST_WRITE_UINT32_BE(data, num) do { \
+ _GST_PUT (data, 0, 32, 24, num); \
+ _GST_PUT (data, 1, 32, 16, num); \
+ _GST_PUT (data, 2, 32, 8, num); \
+ _GST_PUT (data, 3, 32, 0, num); \
+ } while (0)
+
+#define GST_WRITE_UINT32_LE(data, num) do { \
+ _GST_PUT (data, 0, 32, 0, num); \
+ _GST_PUT (data, 1, 32, 8, num); \
+ _GST_PUT (data, 2, 32, 16, num); \
+ _GST_PUT (data, 3, 32, 24, num); \
+ } while (0)
+
+#define GST_WRITE_UINT16_BE(data, num) do { \
+ _GST_PUT (data, 0, 16, 8, num); \
+ _GST_PUT (data, 1, 16, 0, num); \
+ } while (0)
+
+#define GST_WRITE_UINT16_LE(data, num) do { \
+ _GST_PUT (data, 0, 16, 0, num); \
+ _GST_PUT (data, 1, 16, 8, num); \
+ } while (0)
+
+#define GST_WRITE_UINT8(data, num) do { \
+ _GST_PUT (data, 0, 8, 0, num); \
+ } while (0)
+
+#endif /* GST_HAVE_UNALIGNED_ACCESS */
+
+
+/* Miscellaneous utility macros */
+
+/**
+ * GST_ROUND_UP_2:
+ * @num: integer value to round up
+ *
+ * Rounds an integer value up to the next multiple of 2.
+ */
+#define GST_ROUND_UP_2(num) (((num)+1)&~1)
+/**
+ * GST_ROUND_UP_4:
+ * @num: integer value to round up
+ *
+ * Rounds an integer value up to the next multiple of 4.
+ */
+#define GST_ROUND_UP_4(num) (((num)+3)&~3)
+/**
+ * GST_ROUND_UP_8:
+ * @num: integer value to round up
+ *
+ * Rounds an integer value up to the next multiple of 8.
+ */
+#define GST_ROUND_UP_8(num) (((num)+7)&~7)
+/**
+ * GST_ROUND_UP_16:
+ * @num: integer value to round up
+ *
+ * Rounds an integer value up to the next multiple of 16.
+ */
+#define GST_ROUND_UP_16(num) (((num)+15)&~15)
+/**
+ * GST_ROUND_UP_32:
+ * @num: integer value to round up
+ *
+ * Rounds an integer value up to the next multiple of 32.
+ */
+#define GST_ROUND_UP_32(num) (((num)+31)&~31)
+/**
+ * GST_ROUND_UP_64:
+ * @num: integer value to round up
+ *
+ * Rounds an integer value up to the next multiple of 64.
+ */
+#define GST_ROUND_UP_64(num) (((num)+63)&~63)
+
+/**
+ * GST_ROUND_DOWN_2:
+ * @num: integer value to round down
+ *
+ * Rounds an integer value down to the next multiple of 2.
+ *
+ * Since: 0.10.12
+ */
+#define GST_ROUND_DOWN_2(num) ((num)&(~1))
+/**
+ * GST_ROUND_DOWN_4:
+ * @num: integer value to round down
+ *
+ * Rounds an integer value down to the next multiple of 4.
+ *
+ * Since: 0.10.12
+ */
+#define GST_ROUND_DOWN_4(num) ((num)&(~3))
+/**
+ * GST_ROUND_DOWN_8:
+ * @num: integer value to round down
+ *
+ * Rounds an integer value down to the next multiple of 8.
+ *
+ * Since: 0.10.12
+ */
+#define GST_ROUND_DOWN_8(num) ((num)&(~7))
+/**
+ * GST_ROUND_DOWN_16:
+ * @num: integer value to round down
+ *
+ * Rounds an integer value down to the next multiple of 16.
+ *
+ * Since: 0.10.12
+ */
+#define GST_ROUND_DOWN_16(num) ((num)&(~15))
+/**
+ * GST_ROUND_DOWN_32:
+ * @num: integer value to round down
+ *
+ * Rounds an integer value down to the next multiple of 32.
+ *
+ * Since: 0.10.12
+ */
+#define GST_ROUND_DOWN_32(num) ((num)&(~31))
+/**
+ * GST_ROUND_DOWN_64:
+ * @num: integer value to round down
+ *
+ * Rounds an integer value down to the next multiple of 64.
+ *
+ * Since: 0.10.12
+ */
+#define GST_ROUND_DOWN_64(num) ((num)&(~63))
+
+void gst_object_default_error (GstObject * source,
+ GError * error, gchar * debug);
+
+/* element functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_element_create_all_pads (GstElement *element);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstPad* gst_element_get_compatible_pad (GstElement *element, GstPad *pad,
+ const GstCaps *caps);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+GstPadTemplate* gst_element_get_compatible_pad_template (GstElement *element, GstPadTemplate *compattempl);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+G_CONST_RETURN gchar* gst_element_state_get_name (GstState state);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+G_CONST_RETURN gchar * gst_element_state_change_return_get_name (GstStateChangeReturn state_ret);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+gboolean gst_element_link (GstElement *src, GstElement *dest);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_element_link_many (GstElement *element_1,
+ GstElement *element_2, ...) G_GNUC_NULL_TERMINATED;
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_element_link_filtered (GstElement * src,
+ GstElement * dest,
+ GstCaps *filter);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_element_unlink (GstElement *src, GstElement *dest);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_element_unlink_many (GstElement *element_1,
+ GstElement *element_2, ...) G_GNUC_NULL_TERMINATED;
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+gboolean gst_element_link_pads (GstElement *src, const gchar *srcpadname,
+ GstElement *dest, const gchar *destpadname);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_element_unlink_pads (GstElement *src, const gchar *srcpadname,
+ GstElement *dest, const gchar *destpadname);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+gboolean gst_element_link_pads_filtered (GstElement * src, const gchar * srcpadname,
+ GstElement * dest, const gchar * destpadname,
+ GstCaps *filter);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+gboolean gst_element_seek_simple (GstElement *element,
+ GstFormat format,
+ GstSeekFlags seek_flags,
+ gint64 seek_pos);
+
+/* util elementfactory functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_element_factory_can_src_caps(GstElementFactory *factory, const GstCaps *caps);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_element_factory_can_sink_caps(GstElementFactory *factory, const GstCaps *caps);
+
+/* util query functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_element_query_position (GstElement *element, GstFormat *format,
+ gint64 *cur);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_element_query_duration (GstElement *element, GstFormat *format,
+ gint64 *duration);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_element_query_convert (GstElement *element, GstFormat src_format, gint64 src_val,
+ GstFormat *dest_format, gint64 *dest_val);
+
+/* element class functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_element_class_install_std_props (GstElementClass * klass,
+ const gchar * first_name, ...) G_GNUC_NULL_TERMINATED;
+
+/* pad functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_pad_can_link (GstPad *srcpad, GstPad *sinkpad);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+void gst_pad_use_fixed_caps (GstPad *pad);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstCaps* gst_pad_get_fixed_caps_func (GstPad *pad);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstCaps* gst_pad_proxy_getcaps (GstPad * pad);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_pad_proxy_setcaps (GstPad * pad, GstCaps * caps);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+GstElement* gst_pad_get_parent_element (GstPad *pad);
+
+/* util query functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_pad_query_position (GstPad *pad, GstFormat *format,
+ gint64 *cur);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_pad_query_duration (GstPad *pad, GstFormat *format,
+ gint64 *duration);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_pad_query_convert (GstPad *pad, GstFormat src_format, gint64 src_val,
+ GstFormat *dest_format, gint64 *dest_val);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+gboolean gst_pad_query_peer_position (GstPad *pad, GstFormat *format,
+ gint64 *cur);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_pad_query_peer_duration (GstPad *pad, GstFormat *format,
+ gint64 *duration);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gboolean gst_pad_query_peer_convert (GstPad *pad, GstFormat src_format, gint64 src_val,
+ GstFormat *dest_format, gint64 *dest_val);
+
+/* bin functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_bin_add_many (GstBin *bin, GstElement *element_1, ...) G_GNUC_NULL_TERMINATED;
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_bin_remove_many (GstBin *bin, GstElement *element_1, ...) G_GNUC_NULL_TERMINATED;
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstPad * gst_bin_find_unconnected_pad (GstBin *bin, GstPadDirection direction);
+
+/* buffer functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstBuffer * gst_buffer_merge (GstBuffer * buf1, GstBuffer * buf2);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstBuffer * gst_buffer_join (GstBuffer * buf1, GstBuffer * buf2);
+#ifndef GST_DISABLE_DEPRECATED
+void gst_buffer_stamp (GstBuffer * dest, const GstBuffer * src);
+#endif /* GST_DISABLE_DEPRECATED */
+
+/* atomic functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_atomic_int_set (gint * atomic_int, gint value);
+
+/* probes */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gulong gst_pad_add_data_probe (GstPad * pad,
+ GCallback handler,
+ gpointer data);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_pad_remove_data_probe (GstPad * pad, guint handler_id);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gulong gst_pad_add_event_probe (GstPad * pad,
+ GCallback handler,
+ gpointer data);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_pad_remove_event_probe (GstPad * pad, guint handler_id);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+gulong gst_pad_add_buffer_probe (GstPad * pad,
+ GCallback handler,
+ gpointer data);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_pad_remove_buffer_probe (GstPad * pad, guint handler_id);
+
+/* tag emission utility functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_element_found_tags_for_pad (GstElement * element,
+ GstPad * pad,
+ GstTagList * list);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+void gst_element_found_tags (GstElement * element,
+ GstTagList * list);
+
+/* parse utility functions */
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstElement * gst_parse_bin_from_description (const gchar * bin_description,
+ gboolean ghost_unconnected_pads,
+ GError ** err);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+GstClockTime gst_util_get_timestamp (void);
+
+G_END_DECLS
+
+#endif /* __GST_UTILS_H__ */