/* GStreamer

 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>

 *               2004,2005 Wim Taymans <wim@fluendo.com>

 *

 * gstconfig.h: GST_DISABLE_* macros for build configuration

 *

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

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

 * License as published by the Free Software Foundation; either

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

 *

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

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

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

 * Library General Public License for more details.

 *

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

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

 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

/**

 * SECTION:gstconfig

 * @short_description: Build configuration options

 *

 * This describes the configuration options for GStreamer. When building

 * GStreamer there are a lot of parts (known internally as "subsystems" ) that

 * can be disabled for various reasons. The most common reasons are speed and

 * size, which is important because GStreamer is designed to run on embedded

 * systems.

 *

 * If a subsystem is disabled, most of this changes are done in an API

 * compatible way, so you don't need to adapt your code in most cases. It is

 * never done in an ABI compatible way though. So if you want to disable a

 * subsystem, you have to rebuild all programs depending on GStreamer, too.

 *

 * If a subsystem is disabled in GStreamer, a value is defined in

 * <gst/gst.h>. You can check this if you do subsystem-specific stuff.

 * <example id="example-gstconfig">

 * <title>Doing subsystem specific things</title>

 * <programlisting>

 * &has;;ifndef GST_DISABLE_GST_DEBUG

 * // do stuff specific to the debugging subsystem

 * &has;;endif // GST_DISABLE_GST_DEBUG

 * </programlisting>

 * </example>

 */

#ifndef __GST_CONFIG_H__

#define __GST_CONFIG_H__

/* trick gtk-doc into believing these symbols are defined (yes, it's ugly) */

#if 0

#define GST_DISABLE_GST_DEBUG 1

#define GST_DISABLE_PARSE 1

#define GST_DISABLE_REGISTRY 1

#define GST_DISABLE_PLUGIN 1

#endif

/***** default padding of structures *****/

#define GST_PADDING		4

#define GST_PADDING_INIT	{ NULL }

/***** padding for very extensible base classes *****/

#define GST_PADDING_LARGE	20

/***** disabling of subsystems *****/

/**

 * GST_DISABLE_GST_DEBUG:

 *

 * Configures the inclusion of the debugging subsystem

 */

@GST_DISABLE_GST_DEBUG_DEFINE@

/**

 * GST_DISABLE_PARSE:

 *

 * Configures the inclusion of the gst-launch parser

 */

@GST_DISABLE_PARSE_DEFINE@

/**

 * GST_DISABLE_REGISTRY:

 *

 * Configures the use of the plugin registry.

 * If one disables this, required plugins need to be loaded and registered

 * manually

 */

@GST_DISABLE_REGISTRY_DEFINE@

/* FIXME: test and document these! */

/* Configures the use of external plugins */

@GST_DISABLE_PLUGIN_DEFINE@

/* Whether or not the CPU supports unaligned access

 * The macros used are defined consistently by GCC, Clang, MSVC, Sun, and ICC

 *

 * References:

 * https://sourceforge.net/p/predef/wiki/Architectures/

 * https://msdn.microsoft.com/en-us/library/b0084kay.aspx

 * http://docs.oracle.com/cd/E19205-01/820-4155/c++_faq.html#Vers6

 * https://software.intel.com/en-us/node/583402

 */

#if defined(__alpha__) || defined(__arc__) || defined(__arm__) || defined(__aarch64__) || defined(__bfin) || defined(__hppa__) || defined(__nios2__) || defined(__MICROBLAZE__) || defined(__mips__) || defined(__or1k__) || defined(__sh__) || defined(__SH4__) || defined(__sparc__) || defined(__sparc) || defined(__ia64__) || defined(_M_ALPHA) || defined(_M_ARM) || defined(_M_IA64) || defined(__xtensa__) || defined(__e2k__)

#  define GST_HAVE_UNALIGNED_ACCESS 0

#elif defined(__i386__) || defined(__i386) || defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__ppc__) || defined(__ppc64__) || defined(__powerpc__) || defined(__powerpc64__) || defined(__m68k__) || defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64) || defined(__s390__) || defined(__s390x__) || defined(__zarch__)

#  define GST_HAVE_UNALIGNED_ACCESS 1

#else

#  error "Could not detect architecture; don't know whether it supports unaligned access! Please file a bug."

#endif

/**

 * GST_EXPORT:

 *

 * Export the given variable from the built shared object.

 *

 * On Windows, this exports the variable from the DLL.

 * On other platforms, this gets defined to "extern".

 */

/**

 * GST_PLUGIN_EXPORT:

 *

 * Export the plugin's definition.

 *

 * On Windows, this exports the plugin definition from the DLL.

 * On other platforms, this gets defined as a no-op.

 */

/* Only use __declspec(dllexport/import) when we have been built with MSVC or

 * the user is linking to us with MSVC. The only remaining case is when we were

 * built with MinGW and are linking with MinGW in which case we rely on the

 * linker to auto-export/import symbols. Of course all this is only used when

 * not linking statically.

 *

 * NOTE: To link to GStreamer statically on Windows, you must define

 * GST_STATIC_COMPILATION or the prototypes will cause the compiler to search

 * for the symbol inside a DLL.

 */

#if (@GSTCONFIG_BUILT_WITH_MSVC@ || defined(_MSC_VER)) && !defined(GST_STATIC_COMPILATION)

# define GST_PLUGIN_EXPORT __declspec(dllexport)

# ifdef GST_EXPORTS

#  define GST_EXPORT __declspec(dllexport)

# else

#  define GST_EXPORT __declspec(dllimport) extern

# endif

#else

# if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))

#  define GST_PLUGIN_EXPORT __attribute__ ((visibility ("default")))

#  define GST_EXPORT extern __attribute__ ((visibility ("default")))

# else

#  define GST_PLUGIN_EXPORT

#  define GST_EXPORT extern

# endif

#endif

#ifndef GST_API

#define GST_API GST_EXPORT

#endif

/* These macros are used to mark deprecated functions in GStreamer headers,

 * and thus have to be exposed in installed headers. But please

 * do *not* use them in other projects. Instead, use G_DEPRECATED

 * or define your own wrappers around it. */

#ifndef GST_DISABLE_DEPRECATED

#define GST_DEPRECATED GST_API

#define GST_DEPRECATED_FOR(f) GST_API

#else

#define GST_DEPRECATED G_DEPRECATED GST_API

#define GST_DEPRECATED_FOR(f) G_DEPRECATED_FOR(f) GST_API

#endif

#endif /* __GST_CONFIG_H__ */