1 /* GStreamer base utils library

     2  * Copyright (C) 2006 Tim-Philipp Müller <tim centricular net>

     3  *

     4  * This library is free software; you can redistribute it and/or

     5  * modify it under the terms of the GNU Library General Public

     6  * License as published by the Free Software Foundation; either

     7  * version 2 of the License, or (at your option) any later version.

     8  *

     9  * This library is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    12  * Library General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU Library General Public

    15  * License along with this library; if not, write to the

    16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

    17  * Boston, MA 02111-1307, USA.

    18  */

    19 

    20 /**

    21  * SECTION:gstpbutils

    22  * @short_description: General Application and Plugin Utility Library

    23  *

    24  * <refsect2>

    25  * <para>

    26  * libgstpbutils is a general utility library for plugins and applications,

    27  * available since gst-plugins-base 0.10.12. It currently provides the

    28  * following:

    29  * </para>

    30  * <itemizedlist>

    31  * <listitem>

    32  * <para>

    33  * human-readable description strings of codecs, elements, sources, decoders,

    34  * encoders, or sinks from decoder/encoder caps, element names, or protocol

    35  * names.

    36  * </para>

    37  * </listitem>

    38  * <listitem>

    39  * <para>

    40  * support for applications to initiate installation of missing plugins (if

    41  * this is supported by the distribution or operating system used)

    42  * </para>

    43  * </listitem>

    44  * <listitem>

    45  * <para>

    46  * API for GStreamer elements to create missing-plugin messages in order to

    47  * communicate to the application that a certain type of plugin is missing

    48  * (decoder, encoder, URI protocol source, URI protocol sink, named element)

    49  * </para>

    50  * </listitem>

    51  * <listitem>

    52  * <para>

    53  * API for applications to recognise and handle missing-plugin messages

    54  * </para>

    55  * </listitem>

    56  * </itemizedlist>

    57  * <title>Linking to this library</title>

    58  * <para>

    59  * You should obtain the required CFLAGS and LIBS using pkg-config on the

    60  * gstreamer-plugins-base-0.10 module. You will then also need to add

    61  * '-lgstpbutils-0.10' manually to your LIBS line.

    62  * </para>

    63  * <title>Library initialisation</title>

    64  * <para>

    65  * Before using any of its functions, applications and plugins must call

    66  * gst_pb_utils_init() to initialise the library.

    67  * </para>

    68  * </refsect2>

    69  */

    70 

    71 #ifdef HAVE_CONFIG_H

    72 # include "config.h"

    73 #endif

    74 

    75 #ifdef __SYMBIAN32__

    76 #include <gst_global.h>

    77 #endif

    78 

    79 #include "pbutils.h"

    80 

    81 #include "gst/gst-i18n-plugin.h"

    82 

    83 /**

    84  * gst_pb_utils_init:

    85  *

    86  * Initialises the base utils support library. This function is not

    87  * thread-safe. Applications should call it after calling gst_init(),

    88  * plugins should call it from their plugin_init function.

    89  *

    90  * This function may be called multiple times. It will do nothing if the

    91  * library has already been initialised.

    92  *

    93  * Since: 0.10.12

    94  */

    95 #ifdef __SYMBIAN32__

    96 EXPORT_C

    97 #endif

    98 

    99 void

   100 gst_pb_utils_init (void)

   101 {

   102   static gboolean inited;       /* FALSE */

   103 

   104   if (inited) {

   105     GST_LOG ("already initialised");

   106     return;

   107   }

   108 #ifdef ENABLE_NLS

   109   GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,

   110       LOCALEDIR);

   111   bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);

   112 #endif

   113 

   114   inited = TRUE;

   115 }