mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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ef8ca3549e
The idea was originally that if one passed &dest_fmt with dest_fmt=GST_FORMAT_DEFAULT, then the code answering the query could change dest_fmt to the actual default format used. However, in more than half a decade of GStreamer 0.10 no piece of code in GStreamer has ever used that feature, nor are there that many users of this API that actually check whether the format returned is the original format passed before using the values returned. Also, it's just annoying-to-use API in its own right. For all these reasons, make it so that the destination format is passed directly and can't be changed by the element queried.
984 lines
28 KiB
C
984 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) G_GNUC_CONST;
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gdouble gst_util_guint64_to_gdouble (guint64 value) G_GNUC_CONST;
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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_round (guint64 val, guint64 num, guint64 denom);
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guint64 gst_util_uint64_scale_ceil (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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guint64 gst_util_uint64_scale_int_round (guint64 val, gint num, gint denom);
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guint64 gst_util_uint64_scale_int_ceil (guint64 val, gint num, gint denom);
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guint32 gst_util_seqnum_next (void);
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gint32 gst_util_seqnum_compare (guint32 s1, guint32 s2);
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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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/**
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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) (((const 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.
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*/
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#define GST_WRITE_UINT32_LE(data, num) do { \
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_GST_PUT (data, 0, 32, 0, num); \
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_GST_PUT (data, 1, 32, 8, num); \
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_GST_PUT (data, 2, 32, 16, num); \
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_GST_PUT (data, 3, 32, 24, num); \
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} while (0)
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/**
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* GST_WRITE_UINT24_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 24 bit unsigned integer value in big endian format into 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_WRITE_UINT24_BE(data, num) do { \
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_GST_PUT (data, 0, 32, 16, num); \
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_GST_PUT (data, 1, 32, 8, num); \
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_GST_PUT (data, 2, 32, 0, num); \
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} while (0)
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/**
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* GST_WRITE_UINT24_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 24 bit unsigned integer value in little endian format into 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_WRITE_UINT24_LE(data, num) do { \
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_GST_PUT (data, 0, 32, 0, num); \
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_GST_PUT (data, 1, 32, 8, num); \
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_GST_PUT (data, 2, 32, 16, num); \
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} while (0)
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/**
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* GST_WRITE_UINT16_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 16 bit unsigned integer value in big endian format into the memory buffer.
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*/
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#define GST_WRITE_UINT16_BE(data, num) do { \
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_GST_PUT (data, 0, 16, 8, num); \
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_GST_PUT (data, 1, 16, 0, num); \
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} while (0)
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/**
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* GST_WRITE_UINT16_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 16 bit unsigned integer value in little endian format into the memory buffer.
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*/
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#define GST_WRITE_UINT16_LE(data, num) do { \
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_GST_PUT (data, 0, 16, 0, num); \
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_GST_PUT (data, 1, 16, 8, num); \
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} while (0)
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/**
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* GST_WRITE_UINT8:
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* @data: memory location
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* @num: value to store
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*
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* Store an 8 bit unsigned integer value into the memory buffer.
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*/
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#define GST_WRITE_UINT8(data, num) do { \
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_GST_PUT (data, 0, 8, 0, num); \
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} while (0)
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/* Float endianess conversion macros */
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/* FIXME: Remove this once we depend on a GLib version with this */
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#ifndef GFLOAT_FROM_LE
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/**
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* GFLOAT_SWAP_LE_BE:
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* @in: input value
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*
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* Swap byte order of a 32-bit floating point value (float).
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*
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* Returns: @in byte-swapped.
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*
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* Since: 0.10.22
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*
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*/
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#ifdef _FOOL_GTK_DOC_
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G_INLINE_FUNC gfloat GFLOAT_SWAP_LE_BE (gfloat in);
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#endif
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inline static gfloat
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GFLOAT_SWAP_LE_BE(gfloat in)
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{
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union
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{
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guint32 i;
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gfloat f;
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} u;
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u.f = in;
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u.i = GUINT32_SWAP_LE_BE (u.i);
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return u.f;
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}
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/**
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* GDOUBLE_SWAP_LE_BE:
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* @in: input value
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*
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* Swap byte order of a 64-bit floating point value (double).
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*
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* Returns: @in byte-swapped.
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*
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* Since: 0.10.22
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*
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*/
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#ifdef _FOOL_GTK_DOC_
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G_INLINE_FUNC gdouble GDOUBLE_SWAP_LE_BE (gdouble in);
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#endif
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inline static gdouble
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GDOUBLE_SWAP_LE_BE(gdouble in)
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{
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union
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{
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guint64 i;
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gdouble d;
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} u;
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u.d = in;
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u.i = GUINT64_SWAP_LE_BE (u.i);
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return u.d;
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}
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/**
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* GDOUBLE_TO_LE:
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* @val: value
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*
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* Convert 64-bit floating point value (double) from native byte order into
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* little endian byte order.
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*
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* Since: 0.10.22
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*
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*/
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/**
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* GDOUBLE_TO_BE:
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* @val: value
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*
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* Convert 64-bit floating point value (double) from native byte order into
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* big endian byte order.
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*
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* Since: 0.10.22
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*
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*/
|
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/**
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* GDOUBLE_FROM_LE:
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* @val: value
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*
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* Convert 64-bit floating point value (double) from little endian byte order
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* into native byte order.
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*
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* Since: 0.10.22
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*
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*/
|
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/**
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* GDOUBLE_FROM_BE:
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* @val: value
|
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*
|
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* Convert 64-bit floating point value (double) from big endian byte order
|
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* into native byte order.
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*
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* Since: 0.10.22
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*
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*/
|
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|
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/**
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* GFLOAT_TO_LE:
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* @val: value
|
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*
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* Convert 32-bit floating point value (float) from native byte order into
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* little endian byte order.
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*
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* Since: 0.10.22
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*
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*/
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/**
|
|
* GFLOAT_TO_BE:
|
|
* @val: value
|
|
*
|
|
* Convert 32-bit floating point value (float) from native byte order into
|
|
* big endian byte order.
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
/**
|
|
* GFLOAT_FROM_LE:
|
|
* @val: value
|
|
*
|
|
* Convert 32-bit floating point value (float) from little endian byte order
|
|
* into native byte order.
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
/**
|
|
* GFLOAT_FROM_BE:
|
|
* @val: value
|
|
*
|
|
* Convert 32-bit floating point value (float) from big endian byte order
|
|
* into native byte order.
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
|
|
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
|
|
#define GFLOAT_TO_LE(val) ((gfloat) (val))
|
|
#define GFLOAT_TO_BE(val) (GFLOAT_SWAP_LE_BE (val))
|
|
#define GDOUBLE_TO_LE(val) ((gdouble) (val))
|
|
#define GDOUBLE_TO_BE(val) (GDOUBLE_SWAP_LE_BE (val))
|
|
|
|
#elif G_BYTE_ORDER == G_BIG_ENDIAN
|
|
#define GFLOAT_TO_LE(val) (GFLOAT_SWAP_LE_BE (val))
|
|
#define GFLOAT_TO_BE(val) ((gfloat) (val))
|
|
#define GDOUBLE_TO_LE(val) (GDOUBLE_SWAP_LE_BE (val))
|
|
#define GDOUBLE_TO_BE(val) ((gdouble) (val))
|
|
|
|
#else /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */
|
|
#error unknown ENDIAN type
|
|
#endif /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */
|
|
|
|
#define GFLOAT_FROM_LE(val) (GFLOAT_TO_LE (val))
|
|
#define GFLOAT_FROM_BE(val) (GFLOAT_TO_BE (val))
|
|
#define GDOUBLE_FROM_LE(val) (GDOUBLE_TO_LE (val))
|
|
#define GDOUBLE_FROM_BE(val) (GDOUBLE_TO_BE (val))
|
|
|
|
#endif /* !defined(GFLOAT_FROM_LE) */
|
|
|
|
/**
|
|
* GST_READ_FLOAT_LE:
|
|
* @data: memory location
|
|
*
|
|
* Read a 32 bit float value in little endian format from the memory buffer.
|
|
*
|
|
* Returns: The floating point value read from @data
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
#ifdef _FOOL_GTK_DOC_
|
|
G_INLINE_FUNC gfloat GST_READ_FLOAT_LE (const guint8 *data);
|
|
#endif
|
|
|
|
inline static gfloat
|
|
GST_READ_FLOAT_LE(const guint8 *data)
|
|
{
|
|
union
|
|
{
|
|
guint32 i;
|
|
gfloat f;
|
|
} u;
|
|
|
|
u.i = GST_READ_UINT32_LE (data);
|
|
return u.f;
|
|
}
|
|
|
|
/**
|
|
* GST_READ_FLOAT_BE:
|
|
* @data: memory location
|
|
*
|
|
* Read a 32 bit float value in big endian format from the memory buffer.
|
|
*
|
|
* Returns: The floating point value read from @data
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
#ifdef _FOOL_GTK_DOC_
|
|
G_INLINE_FUNC gfloat GST_READ_FLOAT_BE (const guint8 *data);
|
|
#endif
|
|
|
|
inline static gfloat
|
|
GST_READ_FLOAT_BE(const guint8 *data)
|
|
{
|
|
union
|
|
{
|
|
guint32 i;
|
|
gfloat f;
|
|
} u;
|
|
|
|
u.i = GST_READ_UINT32_BE (data);
|
|
return u.f;
|
|
}
|
|
|
|
/**
|
|
* GST_READ_DOUBLE_LE:
|
|
* @data: memory location
|
|
*
|
|
* Read a 64 bit double value in little endian format from the memory buffer.
|
|
*
|
|
* Returns: The double-precision floating point value read from @data
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
#ifdef _FOOL_GTK_DOC_
|
|
G_INLINE_FUNC gdouble GST_READ_DOUBLE_LE (const guint8 *data);
|
|
#endif
|
|
|
|
inline static gdouble
|
|
GST_READ_DOUBLE_LE(const guint8 *data)
|
|
{
|
|
union
|
|
{
|
|
guint64 i;
|
|
gdouble d;
|
|
} u;
|
|
|
|
u.i = GST_READ_UINT64_LE (data);
|
|
return u.d;
|
|
}
|
|
|
|
/**
|
|
* GST_READ_DOUBLE_BE:
|
|
* @data: memory location
|
|
*
|
|
* Read a 64 bit double value in big endian format from the memory buffer.
|
|
*
|
|
* Returns: The double-precision floating point value read from @data
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
#ifdef _FOOL_GTK_DOC_
|
|
G_INLINE_FUNC gdouble GST_READ_DOUBLE_BE (const guint8 *data);
|
|
#endif
|
|
|
|
inline static gdouble
|
|
GST_READ_DOUBLE_BE(const guint8 *data)
|
|
{
|
|
union
|
|
{
|
|
guint64 i;
|
|
gdouble d;
|
|
} u;
|
|
|
|
u.i = GST_READ_UINT64_BE (data);
|
|
return u.d;
|
|
}
|
|
|
|
/**
|
|
* GST_WRITE_FLOAT_LE:
|
|
* @data: memory location
|
|
* @num: value to store
|
|
*
|
|
* Store a 32 bit float value in little endian format into the memory buffer.
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
#ifdef _FOOL_GTK_DOC_
|
|
G_INLINE_FUNC void GST_WRITE_FLOAT_LE (guint8 *data, gfloat num);
|
|
#endif
|
|
|
|
inline static void
|
|
GST_WRITE_FLOAT_LE(guint8 *data, gfloat num)
|
|
{
|
|
union
|
|
{
|
|
guint32 i;
|
|
gfloat f;
|
|
} u;
|
|
|
|
u.f = num;
|
|
GST_WRITE_UINT32_LE (data, u.i);
|
|
}
|
|
|
|
/**
|
|
* GST_WRITE_FLOAT_BE:
|
|
* @data: memory location
|
|
* @num: value to store
|
|
*
|
|
* Store a 32 bit float value in big endian format into the memory buffer.
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
#ifdef _FOOL_GTK_DOC_
|
|
G_INLINE_FUNC void GST_WRITE_FLOAT_BE (guint8 *data, gfloat num);
|
|
#endif
|
|
|
|
inline static void
|
|
GST_WRITE_FLOAT_BE(guint8 *data, gfloat num)
|
|
{
|
|
union
|
|
{
|
|
guint32 i;
|
|
gfloat f;
|
|
} u;
|
|
|
|
u.f = num;
|
|
GST_WRITE_UINT32_BE (data, u.i);
|
|
}
|
|
|
|
/**
|
|
* GST_WRITE_DOUBLE_LE:
|
|
* @data: memory location
|
|
* @num: value to store
|
|
*
|
|
* Store a 64 bit double value in little endian format into the memory buffer.
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
#ifdef _FOOL_GTK_DOC_
|
|
G_INLINE_FUNC void GST_WRITE_DOUBLE_LE (guint8 *data, gdouble num);
|
|
#endif
|
|
|
|
inline static void
|
|
GST_WRITE_DOUBLE_LE(guint8 *data, gdouble num)
|
|
{
|
|
union
|
|
{
|
|
guint64 i;
|
|
gdouble d;
|
|
} u;
|
|
|
|
u.d = num;
|
|
GST_WRITE_UINT64_LE (data, u.i);
|
|
}
|
|
|
|
/**
|
|
* GST_WRITE_DOUBLE_BE:
|
|
* @data: memory location
|
|
* @num: value to store
|
|
*
|
|
* Store a 64 bit double value in big endian format into the memory buffer.
|
|
*
|
|
* Since: 0.10.22
|
|
*
|
|
*/
|
|
#ifdef _FOOL_GTK_DOC_
|
|
G_INLINE_FUNC void GST_WRITE_DOUBLE_BE (guint8 *data, gdouble num);
|
|
#endif
|
|
|
|
inline static void
|
|
GST_WRITE_DOUBLE_BE(guint8 *data, gdouble num)
|
|
{
|
|
union
|
|
{
|
|
guint64 i;
|
|
gdouble d;
|
|
} u;
|
|
|
|
u.d = num;
|
|
GST_WRITE_UINT64_BE (data, u.i);
|
|
}
|
|
|
|
/* 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,
|
|
const GError * error,
|
|
const 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);
|
|
|
|
const gchar* gst_element_state_get_name (GstState state);
|
|
const 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);
|
|
gboolean gst_element_link_pads_full (GstElement *src, const gchar *srcpadname,
|
|
GstElement *dest, const gchar *destpadname,
|
|
GstPadLinkCheck flags);
|
|
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_sink_all_caps (GstElementFactory *factory, const GstCaps *caps);
|
|
gboolean gst_element_factory_can_src_all_caps (GstElementFactory *factory, const GstCaps *caps);
|
|
gboolean gst_element_factory_can_sink_any_caps (GstElementFactory *factory, const GstCaps *caps);
|
|
gboolean gst_element_factory_can_src_any_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 */
|
|
void gst_pad_use_fixed_caps (GstPad *pad);
|
|
GstCaps* gst_pad_proxy_getcaps (GstPad * pad, GstCaps * filter);
|
|
|
|
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);
|
|
|
|
/* buffer functions */
|
|
GstBuffer * gst_buffer_merge (GstBuffer * buf1, GstBuffer * buf2);
|
|
GstBuffer * gst_buffer_join (GstBuffer * buf1, GstBuffer * buf2);
|
|
|
|
/* 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);
|
|
|
|
/**
|
|
* GstSearchMode:
|
|
* @GST_SEARCH_MODE_EXACT : Only search for exact matches.
|
|
* @GST_SEARCH_MODE_BEFORE: Search for an exact match or the element just before.
|
|
* @GST_SEARCH_MODE_AFTER : Search for an exact match or the element just after.
|
|
*
|
|
* The different search modes.
|
|
*
|
|
* Since: 0.10.23
|
|
*/
|
|
typedef enum {
|
|
GST_SEARCH_MODE_EXACT = 0,
|
|
GST_SEARCH_MODE_BEFORE,
|
|
GST_SEARCH_MODE_AFTER
|
|
} GstSearchMode;
|
|
|
|
gpointer gst_util_array_binary_search (gpointer array, guint num_elements,
|
|
gsize element_size, GCompareDataFunc search_func,
|
|
GstSearchMode mode, gconstpointer search_data,
|
|
gpointer user_data);
|
|
|
|
gint gst_util_greatest_common_divisor (gint a, gint b);
|
|
void gst_util_fraction_to_double (gint src_n, gint src_d, gdouble *dest);
|
|
void gst_util_double_to_fraction (gdouble src, gint *dest_n, gint *dest_d);
|
|
gboolean gst_util_fraction_multiply (gint a_n, gint a_d, gint b_n, gint b_d, gint *res_n, gint *res_d);
|
|
gboolean gst_util_fraction_add (gint a_n, gint a_d, gint b_n, gint b_d, gint *res_n, gint *res_d);
|
|
gint gst_util_fraction_compare (gint a_n, gint a_d, gint b_n, gint b_d);
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G_END_DECLS
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#endif /* __GST_UTILS_H__ */
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