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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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22dd04f7e0
Original commit message from CVS: * docs/gst/gstreamer-sections.txt: * gst/gstutils.h: Always use the unaligned variants of GST_READ_UINT* and GST_WRITE_UINT* as it's too easy to break the ISO C strict aliasing rules with simple casts to the corresponding type and this would introduce hard to debug bugs. Fixes bug #545714. API: Add GST_READ_UINT24_(LE|BE) and GST_WRITE_UINT24_(LE|BE).
767 lines
28 KiB
C
767 lines
28 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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* 2002 Thomas Vander Stichele <thomas@apestaart.org>
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*
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* gstutils.h: Header for various utility functions
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_UTILS_H__
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#define __GST_UTILS_H__
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#include <glib.h>
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#include <gst/gstbin.h>
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#include <gst/gstparse.h>
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G_BEGIN_DECLS
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void gst_util_set_value_from_string (GValue *value, const gchar *value_str);
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void gst_util_set_object_arg (GObject *object, const gchar *name, const gchar *value);
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void gst_util_dump_mem (const guchar *mem, guint size);
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guint64 gst_util_gdouble_to_guint64 (gdouble value);
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gdouble gst_util_guint64_to_gdouble (guint64 value);
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/**
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* gst_guint64_to_gdouble:
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* @value: the #guint64 value to convert
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*
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* Convert @value to a gdouble.
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*
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* Returns: @value converted to a #gdouble.
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*/
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/**
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* gst_gdouble_to_guint64:
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* @value: the #gdouble value to convert
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*
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* Convert @value to a guint64.
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*
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* Returns: @value converted to a #guint64.
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*/
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#ifdef WIN32
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#define gst_gdouble_to_guint64(value) gst_util_gdouble_to_guint64(value)
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#define gst_guint64_to_gdouble(value) gst_util_guint64_to_gdouble(value)
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#else
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#define gst_gdouble_to_guint64(value) ((guint64) (value))
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#define gst_guint64_to_gdouble(value) ((gdouble) (value))
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#endif
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guint64 gst_util_uint64_scale (guint64 val, guint64 num, guint64 denom);
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guint64 gst_util_uint64_scale_int (guint64 val, gint num, gint denom);
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void gst_print_pad_caps (GString *buf, gint indent, GstPad *pad);
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void gst_print_element_args (GString *buf, gint indent, GstElement *element);
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GType gst_type_register_static_full (GType parent_type,
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const gchar *type_name,
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guint class_size,
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GBaseInitFunc base_init,
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GBaseFinalizeFunc base_finalize,
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GClassInitFunc class_init,
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GClassFinalizeFunc class_finalize,
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gconstpointer class_data,
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guint instance_size,
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guint16 n_preallocs,
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GInstanceInitFunc instance_init,
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const GTypeValueTable *value_table,
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GTypeFlags flags);
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/* Macros for defining classes. Ideas taken from Bonobo, which took theirs
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from Nautilus and GOB. */
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/* FIXME: Use g_once_init_* unconditionally once we depend on glib 2.14 */
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#if GLIB_CHECK_VERSION (2, 14, 0)
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#define __gst_once_init_enter(val) (g_once_init_enter (val))
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#define __gst_once_init_leave(val,newval) (g_once_init_leave (val, newval))
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#else
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#define __gst_once_init_enter(val) (G_UNLIKELY (*(val) == 0))
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#define __gst_once_init_leave(val,newval) (*(val) = newval)
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#endif
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/**
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* GST_BOILERPLATE_FULL:
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* @type: the name of the type struct
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* @type_as_function: the prefix for the functions
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* @parent_type: the parent type struct name
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* @parent_type_macro: the parent type macro
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* @additional_initializations: function pointer in the form of
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* void additional_initializations (GType type) that can be used for
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* initializing interfaces and the like
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*
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* Define the boilerplate type stuff to reduce typos and code size. Defines
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* the get_type method and the parent_class static variable.
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*
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* <informalexample>
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* <programlisting>
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* GST_BOILERPLATE_FULL (GstFdSink, gst_fdsink, GstElement, GST_TYPE_ELEMENT, _do_init);
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* </programlisting>
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* </informalexample>
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*/
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#define GST_BOILERPLATE_FULL(type, type_as_function, parent_type, parent_type_macro, additional_initializations) \
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\
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static void type_as_function ## _base_init (gpointer g_class); \
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static void type_as_function ## _class_init (type ## Class *g_class);\
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static void type_as_function ## _init (type *object, \
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type ## Class *g_class);\
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static parent_type ## Class *parent_class = NULL; \
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static void \
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type_as_function ## _class_init_trampoline (gpointer g_class, \
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gpointer data) \
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{ \
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parent_class = (parent_type ## Class *) \
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g_type_class_peek_parent (g_class); \
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type_as_function ## _class_init ((type ## Class *)g_class); \
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} \
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\
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GType type_as_function ## _get_type (void); \
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\
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GType \
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type_as_function ## _get_type (void) \
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{ \
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/* The typedef for GType may be gulong or gsize, depending on the \
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* system and whether the compiler is c++ or not. The g_once_init_* \
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* functions always take a gsize * though ... */ \
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static volatile gsize gonce_data; \
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if (__gst_once_init_enter (&gonce_data)) { \
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GType _type; \
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_type = gst_type_register_static_full (parent_type_macro, \
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g_intern_static_string (#type), \
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sizeof (type ## Class), \
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type_as_function ## _base_init, \
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NULL, /* base_finalize */ \
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type_as_function ## _class_init_trampoline, \
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NULL, /* class_finalize */ \
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NULL, /* class_data */ \
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sizeof (type), \
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0, /* n_preallocs */ \
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(GInstanceInitFunc) type_as_function ## _init, \
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NULL, \
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(GTypeFlags) 0); \
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additional_initializations (_type); \
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__gst_once_init_leave (&gonce_data, (gsize) _type); \
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} \
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return (GType) gonce_data; \
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}
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#define __GST_DO_NOTHING(type) /* NOP */
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/**
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* GST_BOILERPLATE:
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* @type: the name of the type struct
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* @type_as_function: the prefix for the functions
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* @parent_type: the parent type struct name
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* @parent_type_macro: the parent type macro
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*
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* Define the boilerplate type stuff to reduce typos and code size. Defines
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* the get_type method and the parent_class static variable.
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*
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* <informalexample>
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* <programlisting>
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* GST_BOILERPLATE (GstFdSink, gst_fdsink, GstElement, GST_TYPE_ELEMENT);
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* </programlisting>
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* </informalexample>
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*/
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#define GST_BOILERPLATE(type,type_as_function,parent_type,parent_type_macro) \
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GST_BOILERPLATE_FULL (type, type_as_function, parent_type, parent_type_macro, \
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__GST_DO_NOTHING)
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/* Like GST_BOILERPLATE, but makes the type 1) implement an interface, and 2)
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* implement GstImplementsInterface for that type
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*
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* After this you will need to implement interface_as_function ## _supported
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* and interface_as_function ## _interface_init
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*/
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/**
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* GST_BOILERPLATE_WITH_INTERFACE:
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* @type: the name of the type struct
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* @type_as_function: the prefix for the functions
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* @parent_type: the parent type struct name
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* @parent_type_as_macro: the parent type macro
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* @interface_type: the name of the interface type struct
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* @interface_type_as_macro: the interface type macro
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* @interface_as_function: the interface function name prefix
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*
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* Like GST_BOILERPLATE, but makes the type 1) implement an interface, and 2)
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* implement GstImplementsInterface for that type.
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*
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* After this you will need to implement interface_as_function ## _supported
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* and interface_as_function ## _interface_init
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*/
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#define GST_BOILERPLATE_WITH_INTERFACE(type, type_as_function, \
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parent_type, parent_type_as_macro, interface_type, \
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interface_type_as_macro, interface_as_function) \
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\
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static void interface_as_function ## _interface_init (interface_type ## Class *klass); \
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static gboolean interface_as_function ## _supported (type *object, GType iface_type); \
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\
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static void \
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type_as_function ## _implements_interface_init (GstImplementsInterfaceClass *klass) \
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{ \
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klass->supported = (gboolean (*)(GstImplementsInterface*, GType))interface_as_function ## _supported; \
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} \
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\
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static void \
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type_as_function ## _init_interfaces (GType type) \
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{ \
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static const GInterfaceInfo implements_iface_info = { \
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(GInterfaceInitFunc) type_as_function ## _implements_interface_init,\
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NULL, \
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NULL, \
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}; \
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static const GInterfaceInfo iface_info = { \
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(GInterfaceInitFunc) interface_as_function ## _interface_init, \
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NULL, \
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NULL, \
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}; \
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\
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g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE, \
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&implements_iface_info); \
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g_type_add_interface_static (type, interface_type_as_macro, \
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&iface_info); \
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} \
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\
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GST_BOILERPLATE_FULL (type, type_as_function, parent_type, \
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parent_type_as_macro, type_as_function ## _init_interfaces)
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/**
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* GST_CALL_PARENT:
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* @parent_class_cast: the name of the class cast macro for the parent type
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* @name: name of the function to call
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* @args: arguments enclosed in '( )'
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*
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* Just call the parent handler. This assumes that there is a variable
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* named parent_class that points to the (duh!) parent class. Note that
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* this macro is not to be used with things that return something, use
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* the _WITH_DEFAULT version for that
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*/
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#define GST_CALL_PARENT(parent_class_cast, name, args) \
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((parent_class_cast(parent_class)->name != NULL) ? \
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parent_class_cast(parent_class)->name args : (void) 0)
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/**
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* GST_CALL_PARENT_WITH_DEFAULT:
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* @parent_class_cast: the name of the class cast macro for the parent type
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* @name: name of the function to call
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* @args: arguments enclosed in '( )'
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* @def_return: default result
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*
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* Same as GST_CALL_PARENT(), but in case there is no implementation, it
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* evaluates to @def_return.
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*/
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#define GST_CALL_PARENT_WITH_DEFAULT(parent_class_cast, name, args, def_return)\
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((parent_class_cast(parent_class)->name != NULL) ? \
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parent_class_cast(parent_class)->name args : def_return)
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/* Define PUT and GET functions for unaligned memory */
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#define _GST_GET(__data, __idx, __size, __shift) \
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(((guint##__size) (((guint8 *) (__data))[__idx])) << __shift)
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#define _GST_PUT(__data, __idx, __size, __shift, __num) \
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(((guint8 *) (__data))[__idx] = (((guint##__size) __num) >> __shift) & 0xff)
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/**
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* GST_READ_UINT64_BE:
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* @data: memory location
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*
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* Read a 64 bit unsigned integer value in big endian format from the memory buffer.
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*/
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#define GST_READ_UINT64_BE(data) (_GST_GET (data, 0, 64, 56) | \
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_GST_GET (data, 1, 64, 48) | \
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_GST_GET (data, 2, 64, 40) | \
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_GST_GET (data, 3, 64, 32) | \
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_GST_GET (data, 4, 64, 24) | \
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_GST_GET (data, 5, 64, 16) | \
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_GST_GET (data, 6, 64, 8) | \
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_GST_GET (data, 7, 64, 0))
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/**
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* GST_READ_UINT64_LE:
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* @data: memory location
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*
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* Read a 64 bit unsigned integer value in little endian format from the memory buffer.
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*/
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#define GST_READ_UINT64_LE(data) (_GST_GET (data, 7, 64, 56) | \
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_GST_GET (data, 6, 64, 48) | \
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_GST_GET (data, 5, 64, 40) | \
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_GST_GET (data, 4, 64, 32) | \
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_GST_GET (data, 3, 64, 24) | \
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_GST_GET (data, 2, 64, 16) | \
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_GST_GET (data, 1, 64, 8) | \
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_GST_GET (data, 0, 64, 0))
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/**
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* GST_READ_UINT32_BE:
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* @data: memory location
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*
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* Read a 32 bit unsigned integer value in big endian format from the memory buffer.
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*/
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#define GST_READ_UINT32_BE(data) (_GST_GET (data, 0, 32, 24) | \
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_GST_GET (data, 1, 32, 16) | \
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_GST_GET (data, 2, 32, 8) | \
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_GST_GET (data, 3, 32, 0))
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/**
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* GST_READ_UINT32_LE:
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* @data: memory location
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*
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* Read a 32 bit unsigned integer value in little endian format from the memory buffer.
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*/
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#define GST_READ_UINT32_LE(data) (_GST_GET (data, 3, 32, 24) | \
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_GST_GET (data, 2, 32, 16) | \
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_GST_GET (data, 1, 32, 8) | \
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_GST_GET (data, 0, 32, 0))
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/**
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* GST_READ_UINT24_BE:
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* @data: memory location
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*
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* Read a 24 bit unsigned integer value in big endian format from the memory buffer.
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*
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* Since: 0.10.22
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*/
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#define GST_READ_UINT24_BE(data) (_GST_GET (data, 0, 32, 16) | \
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_GST_GET (data, 1, 32, 8) | \
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_GST_GET (data, 2, 32, 0))
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/**
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* GST_READ_UINT24_LE:
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* @data: memory location
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*
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* Read a 24 bit unsigned integer value in little endian format from the memory buffer.
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*
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* Since: 0.10.22
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*/
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#define GST_READ_UINT24_LE(data) (_GST_GET (data, 2, 32, 16) | \
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_GST_GET (data, 1, 32, 8) | \
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_GST_GET (data, 0, 32, 0))
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/**
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* GST_READ_UINT16_BE:
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* @data: memory location
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*
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* Read a 16 bit unsigned integer value in big endian format from the memory buffer.
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*/
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#define GST_READ_UINT16_BE(data) (_GST_GET (data, 0, 16, 8) | \
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_GST_GET (data, 1, 16, 0))
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/**
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* GST_READ_UINT16_LE:
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* @data: memory location
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*
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* Read a 16 bit unsigned integer value in little endian format from the memory buffer.
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*/
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#define GST_READ_UINT16_LE(data) (_GST_GET (data, 1, 16, 8) | \
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_GST_GET (data, 0, 16, 0))
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/**
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* GST_READ_UINT8:
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* @data: memory location
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*
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* Read an 8 bit unsigned integer value from the memory buffer.
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*/
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#define GST_READ_UINT8(data) (_GST_GET (data, 0, 8, 0))
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/**
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* GST_WRITE_UINT64_BE:
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* @data: memory location
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* @num: value to store
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*
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* Store a 64 bit unsigned integer value in big endian format into the memory buffer.
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*/
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#define GST_WRITE_UINT64_BE(data, num) do { \
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_GST_PUT (data, 0, 64, 56, num); \
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_GST_PUT (data, 1, 64, 48, num); \
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_GST_PUT (data, 2, 64, 40, num); \
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_GST_PUT (data, 3, 64, 32, num); \
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_GST_PUT (data, 4, 64, 24, num); \
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_GST_PUT (data, 5, 64, 16, num); \
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_GST_PUT (data, 6, 64, 8, num); \
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_GST_PUT (data, 7, 64, 0, num); \
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} while (0)
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/**
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* GST_WRITE_UINT64_LE:
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* @data: memory location
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* @num: value to store
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*
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* Store a 64 bit unsigned integer value in little endian format into the memory buffer.
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*/
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#define GST_WRITE_UINT64_LE(data, num) do { \
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_GST_PUT (data, 0, 64, 0, num); \
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_GST_PUT (data, 1, 64, 8, num); \
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_GST_PUT (data, 2, 64, 16, num); \
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_GST_PUT (data, 3, 64, 24, num); \
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_GST_PUT (data, 4, 64, 32, num); \
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_GST_PUT (data, 5, 64, 40, num); \
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_GST_PUT (data, 6, 64, 48, num); \
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_GST_PUT (data, 7, 64, 56, num); \
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} while (0)
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/**
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* GST_WRITE_UINT32_BE:
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* @data: memory location
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* @num: value to store
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*
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* Store a 32 bit unsigned integer value in big endian format into the memory buffer.
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*/
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#define GST_WRITE_UINT32_BE(data, num) do { \
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_GST_PUT (data, 0, 32, 24, num); \
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_GST_PUT (data, 1, 32, 16, num); \
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_GST_PUT (data, 2, 32, 8, num); \
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_GST_PUT (data, 3, 32, 0, num); \
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} while (0)
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/**
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* GST_WRITE_UINT32_LE:
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* @data: memory location
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* @num: value to store
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*
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* Store a 32 bit unsigned integer value in little endian format into the memory buffer.
|
|
*/
|
|
#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)
|
|
|
|
/**
|
|
* GST_WRITE_UINT24_BE:
|
|
* @data: memory location
|
|
* @num: value to store
|
|
*
|
|
* Store a 24 bit unsigned integer value in big endian format into the memory buffer.
|
|
*
|
|
* Since: 0.10.22
|
|
*/
|
|
#define GST_WRITE_UINT24_BE(data, num) do { \
|
|
_GST_PUT (data, 0, 32, 16, num); \
|
|
_GST_PUT (data, 1, 32, 8, num); \
|
|
_GST_PUT (data, 2, 32, 0, num); \
|
|
} while (0)
|
|
|
|
/**
|
|
* GST_WRITE_UINT24_LE:
|
|
* @data: memory location
|
|
* @num: value to store
|
|
*
|
|
* Store a 24 bit unsigned integer value in little endian format into the memory buffer.
|
|
*
|
|
* Since: 0.10.22
|
|
*/
|
|
#define GST_WRITE_UINT24_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); \
|
|
} while (0)
|
|
|
|
/**
|
|
* 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) do { \
|
|
_GST_PUT (data, 0, 16, 8, num); \
|
|
_GST_PUT (data, 1, 16, 0, num); \
|
|
} while (0)
|
|
|
|
/**
|
|
* 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) do { \
|
|
_GST_PUT (data, 0, 16, 0, num); \
|
|
_GST_PUT (data, 1, 16, 8, num); \
|
|
} while (0)
|
|
|
|
/**
|
|
* 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) do { \
|
|
_GST_PUT (data, 0, 8, 0, num); \
|
|
} while (0)
|
|
|
|
/* 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 */
|
|
void gst_element_create_all_pads (GstElement *element);
|
|
GstPad* gst_element_get_compatible_pad (GstElement *element, GstPad *pad,
|
|
const GstCaps *caps);
|
|
|
|
GstPadTemplate* gst_element_get_compatible_pad_template (GstElement *element, GstPadTemplate *compattempl);
|
|
|
|
G_CONST_RETURN gchar* gst_element_state_get_name (GstState state);
|
|
G_CONST_RETURN gchar * gst_element_state_change_return_get_name (GstStateChangeReturn state_ret);
|
|
|
|
gboolean gst_element_link (GstElement *src, GstElement *dest);
|
|
gboolean gst_element_link_many (GstElement *element_1,
|
|
GstElement *element_2, ...) G_GNUC_NULL_TERMINATED;
|
|
gboolean gst_element_link_filtered (GstElement * src,
|
|
GstElement * dest,
|
|
GstCaps *filter);
|
|
void gst_element_unlink (GstElement *src, GstElement *dest);
|
|
void gst_element_unlink_many (GstElement *element_1,
|
|
GstElement *element_2, ...) G_GNUC_NULL_TERMINATED;
|
|
|
|
gboolean gst_element_link_pads (GstElement *src, const gchar *srcpadname,
|
|
GstElement *dest, const gchar *destpadname);
|
|
void gst_element_unlink_pads (GstElement *src, const gchar *srcpadname,
|
|
GstElement *dest, const gchar *destpadname);
|
|
|
|
gboolean gst_element_link_pads_filtered (GstElement * src, const gchar * srcpadname,
|
|
GstElement * dest, const gchar * destpadname,
|
|
GstCaps *filter);
|
|
|
|
gboolean gst_element_seek_simple (GstElement *element,
|
|
GstFormat format,
|
|
GstSeekFlags seek_flags,
|
|
gint64 seek_pos);
|
|
|
|
/* util elementfactory functions */
|
|
gboolean gst_element_factory_can_src_caps(GstElementFactory *factory, const GstCaps *caps);
|
|
gboolean gst_element_factory_can_sink_caps(GstElementFactory *factory, const GstCaps *caps);
|
|
|
|
/* util query functions */
|
|
gboolean gst_element_query_position (GstElement *element, GstFormat *format,
|
|
gint64 *cur);
|
|
gboolean gst_element_query_duration (GstElement *element, GstFormat *format,
|
|
gint64 *duration);
|
|
gboolean gst_element_query_convert (GstElement *element, GstFormat src_format, gint64 src_val,
|
|
GstFormat *dest_format, gint64 *dest_val);
|
|
|
|
/* element class functions */
|
|
void gst_element_class_install_std_props (GstElementClass * klass,
|
|
const gchar * first_name, ...) G_GNUC_NULL_TERMINATED;
|
|
|
|
/* pad functions */
|
|
gboolean gst_pad_can_link (GstPad *srcpad, GstPad *sinkpad);
|
|
|
|
void gst_pad_use_fixed_caps (GstPad *pad);
|
|
GstCaps* gst_pad_get_fixed_caps_func (GstPad *pad);
|
|
GstCaps* gst_pad_proxy_getcaps (GstPad * pad);
|
|
gboolean gst_pad_proxy_setcaps (GstPad * pad, GstCaps * caps);
|
|
|
|
GstElement* gst_pad_get_parent_element (GstPad *pad);
|
|
|
|
/* util query functions */
|
|
gboolean gst_pad_query_position (GstPad *pad, GstFormat *format,
|
|
gint64 *cur);
|
|
gboolean gst_pad_query_duration (GstPad *pad, GstFormat *format,
|
|
gint64 *duration);
|
|
gboolean gst_pad_query_convert (GstPad *pad, GstFormat src_format, gint64 src_val,
|
|
GstFormat *dest_format, gint64 *dest_val);
|
|
|
|
gboolean gst_pad_query_peer_position (GstPad *pad, GstFormat *format,
|
|
gint64 *cur);
|
|
gboolean gst_pad_query_peer_duration (GstPad *pad, GstFormat *format,
|
|
gint64 *duration);
|
|
gboolean gst_pad_query_peer_convert (GstPad *pad, GstFormat src_format, gint64 src_val,
|
|
GstFormat *dest_format, gint64 *dest_val);
|
|
|
|
/* bin functions */
|
|
void gst_bin_add_many (GstBin *bin, GstElement *element_1, ...) G_GNUC_NULL_TERMINATED;
|
|
void gst_bin_remove_many (GstBin *bin, GstElement *element_1, ...) G_GNUC_NULL_TERMINATED;
|
|
GstPad * gst_bin_find_unlinked_pad (GstBin *bin, GstPadDirection direction);
|
|
#ifndef GST_DISABLE_DEPRECATED
|
|
GstPad * gst_bin_find_unconnected_pad (GstBin *bin, GstPadDirection direction);
|
|
#endif
|
|
|
|
/* buffer functions */
|
|
GstBuffer * gst_buffer_merge (GstBuffer * buf1, GstBuffer * buf2);
|
|
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 */
|
|
#ifndef GST_DISABLE_DEPRECATED
|
|
void gst_atomic_int_set (gint * atomic_int, gint value);
|
|
#endif
|
|
|
|
/* probes */
|
|
gulong gst_pad_add_data_probe (GstPad * pad,
|
|
GCallback handler,
|
|
gpointer data);
|
|
|
|
gulong gst_pad_add_data_probe_full (GstPad * pad,
|
|
GCallback handler,
|
|
gpointer data,
|
|
GDestroyNotify notify);
|
|
|
|
void gst_pad_remove_data_probe (GstPad * pad, guint handler_id);
|
|
|
|
gulong gst_pad_add_event_probe (GstPad * pad,
|
|
GCallback handler,
|
|
gpointer data);
|
|
|
|
gulong gst_pad_add_event_probe_full (GstPad * pad,
|
|
GCallback handler,
|
|
gpointer data,
|
|
GDestroyNotify notify);
|
|
|
|
void gst_pad_remove_event_probe (GstPad * pad, guint handler_id);
|
|
|
|
gulong gst_pad_add_buffer_probe (GstPad * pad,
|
|
GCallback handler,
|
|
gpointer data);
|
|
|
|
gulong gst_pad_add_buffer_probe_full (GstPad * pad,
|
|
GCallback handler,
|
|
gpointer data,
|
|
GDestroyNotify notify);
|
|
|
|
void gst_pad_remove_buffer_probe (GstPad * pad, guint handler_id);
|
|
|
|
/* tag emission utility functions */
|
|
void gst_element_found_tags_for_pad (GstElement * element,
|
|
GstPad * pad,
|
|
GstTagList * list);
|
|
void gst_element_found_tags (GstElement * element,
|
|
GstTagList * list);
|
|
|
|
/* parse utility functions */
|
|
GstElement * gst_parse_bin_from_description (const gchar * bin_description,
|
|
gboolean ghost_unlinked_pads,
|
|
GError ** err);
|
|
|
|
GstElement * gst_parse_bin_from_description_full (const gchar * bin_description,
|
|
gboolean ghost_unlinked_pads,
|
|
GstParseContext * context,
|
|
GstParseFlags flags,
|
|
GError ** err);
|
|
|
|
GstClockTime gst_util_get_timestamp (void);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_UTILS_H__ */
|