2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2004,2005 Wim Taymans <wim@fluendo.com>
5 * gstconfig.h: GST_DISABLE_* macros for build configuration
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
25 * @short_description: Build configuration options
27 * This describes the configuration options for GStreamer. When building
28 * GStreamer there are a lot of parts (known internally as "subsystems" ) that
29 * can be disabled for various reasons. The most common reasons are speed and
30 * size, which is important because GStreamer is designed to run on embedded
33 * If a subsystem is disabled, most of this changes are done in an API
34 * compatible way, so you don't need to adapt your code in most cases. It is
35 * never done in an ABI compatible way though. So if you want to disable a
36 * suybsystem, you have to rebuild all programs depending on GStreamer, too.
38 * If a subsystem is disabled in GStreamer, a value is defined in
39 * <gst/gst.h>. You can check this if you do subsystem-specific stuff.
40 * <example id="example-gstconfig">
41 * <title>Doing subsystem specific things</title>
43 * &hash;ifndef GST_DISABLE_GST_DEBUG
44 * // do stuff specific to the debugging subsystem
45 * &hash;endif // GST_DISABLE_GST_DEBUG
50 #ifndef __GST_CONFIG_H__
51 #define __GST_CONFIG_H__
53 /* trick gtk-doc into believing these symbols are defined (yes, it's ugly) */
56 #define GST_DISABLE_GST_DEBUG 1
57 #define GST_DISABLE_PARSE 1
58 #define GST_DISABLE_TRACE 1
59 #define GST_DISABLE_ALLOC_TRACE 1
60 #define GST_DISABLE_REGISTRY 1
61 #define GST_DISABLE_PLUGIN 1
62 #define GST_HAVE_GLIB_2_8 1
65 /***** default padding of structures *****/
67 #define GST_PADDING_INIT { NULL }
69 /***** padding for very extensible base classes *****/
70 #define GST_PADDING_LARGE 20
72 /***** disabling of subsystems *****/
75 * GST_DISABLE_GST_DEBUG:
77 * Configures the inclusion of the debugging subsystem
79 @GST_DISABLE_GST_DEBUG_DEFINE@
84 * Configures the inclusion of the gst-lauch parser
86 @GST_DISABLE_PARSE_DEFINE@
91 * Configures the inclusion of a resource tracing facillity
92 * (seems to be unused)
94 @GST_DISABLE_TRACE_DEFINE@
97 * GST_DISABLE_ALLOC_TRACE:
99 * Configures the use of a memory tracer based on the resource tracer
100 * if TRACE is disabled, ALLOC_TRACE is disabled as well
102 @GST_DISABLE_ALLOC_TRACE_DEFINE@
105 * GST_DISABLE_REGISTRY:
107 * Configures the use of the plugin registry.
108 * If one disables this, required plugins need to be loaded and registered
111 @GST_DISABLE_REGISTRY_DEFINE@
113 /* FIXME: test and document these! */
114 /* Configures the use of external plugins */
115 @GST_DISABLE_PLUGIN_DEFINE@
117 /* printf extension format */
121 * printf format type used to debug GStreamer types.
122 * This can only be used on types whose size is >= sizeof(gpointer).
124 @GST_PRINTF_EXTENSION_POINTER_FORMAT_DEFINE@
126 * GST_SEGMENT_FORMAT:
128 * printf format type used to debug GStreamer segments.
129 * This can only be used on pointers to GstSegment structures.
133 @GST_PRINTF_EXTENSION_SEGMENT_FORMAT_DEFINE@
135 /* whether or not GST_PTR_FORMAT or GST_SEGMENT_FORMAT are using
136 * the printf extension mechanism. This is for internal use in our
137 * header files so we know whether we can use G_GNUC_PRINTF or not */
138 @GST_USING_PRINTF_EXTENSION_DEFINE@
140 /* GST_DISABLE_PRINTF_EXTENSION:
142 * Define this to debug your debug log messages and make gcc spew warnings
143 * if printf format string and arguments don't match up (this is usually
144 * not the case when libc and gcc are used because printf format warnings
145 * have to be disabled when the printf extension mechanism is in use).
147 * Note that using this option disables 'pretty logging' of GStreamer objects
148 * like caps, tags, structures, events, pads etc., so that only their address
149 * will be printed in the log.
151 * This define only disables use of the special registered printf format
152 * extensions in the code compiled with it defined. It does not stop
153 * GStreamer from registering these extensions in the first place if it
154 * was compiled against a libc that supports this.
158 /* If GLib is not using the system printf, we can't use the registered
159 * extensions because the GLib-internal printf won't know how to parse them */
160 #if defined(GST_DISABLE_PRINTF_EXTENSION) || !defined(GLIB_USING_SYSTEM_PRINTF)
161 #undef GST_PTR_FORMAT
162 #define GST_PTR_FORMAT "p"
163 #undef GST_SEGMENT_FORMAT
164 #define GST_SEGMENT_FORMAT "p"
165 #undef GST_USING_PRINTF_EXTENSION
168 /* whether or not the CPU supports unaligned access */
169 @GST_HAVE_UNALIGNED_ACCESS_DEFINE@
174 * Export the given variable from the built shared object.
176 * On Windows, this exports the variable from the DLL.
177 * On other platforms, this gets defined to "extern".
182 * Export the plugin's definition.
184 * On Windows, this exports the plugin definition from the DLL.
185 * On other platforms, this gets defined as a no-op.
188 #define GST_PLUGIN_EXPORT __declspec(dllexport) extern
190 #define GST_EXPORT __declspec(dllexport) extern
192 #define GST_EXPORT __declspec(dllimport) extern
194 #else /* not _MSC_VER */
195 #define GST_PLUGIN_EXPORT
196 #if (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
197 #define GST_EXPORT extern __attribute__ ((visibility ("default")))
199 #define GST_EXPORT extern
203 #endif /* __GST_CONFIG_H__ */