photography: GST_EXPORT -> GST_PHOTOGRAPHY_API

We need different export decorators for the different libs.
For now no actual change though, just rename before the release,
and add prelude headers to define the new decorator to GST_EXPORT.
diff --git a/common b/common
index 3fa2c9e..f0c2dc9 160000
--- a/common
+++ b/common
@@ -1 +1 @@
-Subproject commit 3fa2c9e372bceec30be91e67fb02b6cb05bed493
+Subproject commit f0c2dc9aadfa05bb5274c40da750104ecbb88cba
diff --git a/gst-libs/gst/interfaces/Makefile.am b/gst-libs/gst/interfaces/Makefile.am
index 966ee1b..de9d2a6 100644
--- a/gst-libs/gst/interfaces/Makefile.am
+++ b/gst-libs/gst/interfaces/Makefile.am
@@ -10,7 +10,8 @@
 glib_enum_define=GST_PHOTOGRAPHY
 glib_gen_prefix=gst_photography
 glib_gen_basename=photography
-glib_gen_decl_banner=GST_EXPORT
+glib_gen_decl_banner=GST_PHOTOGRAPHY_API
+glib_gen_decl_include=\#include <gst/interfaces/photography-prelude.h>
 
 built_sources = \
 	photography-enumtypes.c
@@ -19,6 +20,7 @@
 	photography-enumtypes.h
 
 libgstphotographyinclude_HEADERS = \
+	photography-prelude.h \
 	$(headers_photography)
 
 nodist_libgstphotographyinclude_HEADERS = \
diff --git a/gst-libs/gst/interfaces/build_mkenum.py b/gst-libs/gst/interfaces/build_mkenum.py
index 350cbb6..a788392 100755
--- a/gst-libs/gst/interfaces/build_mkenum.py
+++ b/gst-libs/gst/interfaces/build_mkenum.py
@@ -8,11 +8,11 @@
 import sys, os, shutil, subprocess
 
 h_array = ['--fhead',
-           "#ifndef __GST_PHOTO_ENUM_TYPES_H__\n#define __GST_PHOTO_ENUM_TYPES_H__\n\n#include <gst/gst.h>\n\nG_BEGIN_DECLS\n",
+           "#ifndef __GST_PHOTO_ENUM_TYPES_H__\n#define __GST_PHOTO_ENUM_TYPES_H__\n\n#include <gst/gst.h>\n#include <gst/interfaces/photography-prelude.h>\nG_BEGIN_DECLS\n",
            '--fprod',
            "\n/* enumerations from \"@filename@\" */\n",
            '--vhead',
-           "GST_EXPORT GType @enum_name@_get_type (void);\n#define GST_TYPE_@ENUMSHORT@ (@enum_name@_get_type())\n",
+           "GST_PHOTOGRAPHY_API GType @enum_name@_get_type (void);\n#define GST_TYPE_@ENUMSHORT@ (@enum_name@_get_type())\n",
            '--ftail',
            "G_END_DECLS\n\n#endif /* __GST_PHOTO_ENUM_TYPES_H__ */"]
 
diff --git a/gst-libs/gst/interfaces/meson.build b/gst-libs/gst/interfaces/meson.build
index 23c9846..35290f7 100644
--- a/gst-libs/gst/interfaces/meson.build
+++ b/gst-libs/gst/interfaces/meson.build
@@ -1,5 +1,5 @@
 photography_sources = ['photography.c']
-photo_headers = ['photography.h']
+photo_headers = ['photography.h', 'photography-prelude.h']
 install_headers(photo_headers, subdir : 'gstreamer-1.0/gst/interfaces')
 
 mkenums = find_program('build_mkenum.py')
diff --git a/gst-libs/gst/interfaces/photography-prelude.h b/gst-libs/gst/interfaces/photography-prelude.h
new file mode 100644
index 0000000..7e300e6
--- /dev/null
+++ b/gst-libs/gst/interfaces/photography-prelude.h
@@ -0,0 +1,31 @@
+/* GStreamer Photography Library
+ * Copyright (C) 2018 GStreamer developers
+ *
+ * photography-prelude.h: prelude include header for gst-photography library
+ *
+ * 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.
+ */
+
+#ifndef __GST_PHOTOGRAPHY_PRELUDE_H__
+#define __GST_PHOTOGRAPHY_PRELUDE_H__
+
+#include <gst/gst.h>
+
+#ifndef GST_PHOTOGRAPHY_API
+#define GST_PHOTOGRAPHY_API GST_EXPORT
+#endif
+
+#endif /* __GST_PHOTOGRAPHY_PRELUDE_H__ */
diff --git a/gst-libs/gst/interfaces/photography.h b/gst-libs/gst/interfaces/photography.h
index 089c0f1..0475d71 100644
--- a/gst-libs/gst/interfaces/photography.h
+++ b/gst-libs/gst/interfaces/photography.h
@@ -29,6 +29,7 @@
 #endif
 
 #include <gst/gst.h>
+#include <gst/interfaces/photography-prelude.h>
 #include <gst/interfaces/photography-enumtypes.h>
 
 G_BEGIN_DECLS
@@ -550,121 +551,121 @@
   gpointer _gst_reserved[GST_PADDING];
 } GstPhotographyInterface;
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 GType gst_photography_get_type (void);
 
 /* virtual class function wrappers */
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_ev_compensation (GstPhotography * photo,
                                               gfloat * ev_comp);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_iso_speed       (GstPhotography * photo,
                                               guint * iso_speed);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_aperture        (GstPhotography * photo,
                                               guint * aperture);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_exposure        (GstPhotography * photo,
                                               guint32 * exposure);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_white_balance_mode (GstPhotography * photo,
                                                  GstPhotographyWhiteBalanceMode * wb_mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_color_tone_mode (GstPhotography * photo,
                                               GstPhotographyColorToneMode * tone_mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_scene_mode      (GstPhotography * photo,
                                               GstPhotographySceneMode * scene_mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_flash_mode      (GstPhotography * photo,
                                               GstPhotographyFlashMode * flash_mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_noise_reduction (GstPhotography * photo,
                                               GstPhotographyNoiseReduction * noise_reduction);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_zoom            (GstPhotography * photo, gfloat * zoom);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_flicker_mode    (GstPhotography * photo,
                                               GstPhotographyFlickerReductionMode * mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_focus_mode      (GstPhotography * photo,
                                               GstPhotographyFocusMode * mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_ev_compensation (GstPhotography * photo,
                                               gfloat ev_comp);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_iso_speed       (GstPhotography * photo,
                                               guint iso_speed);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_aperture        (GstPhotography * photo, guint aperture);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_exposure        (GstPhotography * photo, guint exposure);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_white_balance_mode (GstPhotography * photo,
                                                  GstPhotographyWhiteBalanceMode wb_mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_color_tone_mode (GstPhotography * photo,
                                               GstPhotographyColorToneMode tone_mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_scene_mode      (GstPhotography * photo,
                                               GstPhotographySceneMode scene_mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_flash_mode      (GstPhotography * photo,
                                               GstPhotographyFlashMode flash_mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_noise_reduction (GstPhotography * photo,
                                               GstPhotographyNoiseReduction noise_reduction);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_zoom            (GstPhotography * photo, gfloat zoom);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_flicker_mode    (GstPhotography * photo,
                                               GstPhotographyFlickerReductionMode mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_focus_mode      (GstPhotography * photo,
                                               GstPhotographyFocusMode mode);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 GstPhotographyCaps gst_photography_get_capabilities (GstPhotography * photo);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_prepare_for_capture (GstPhotography * photo,
                                               GstPhotographyCapturePrepared func,
                                               GstCaps *capture_caps,
                                               gpointer user_data);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_set_config    (GstPhotography         * photo,
                                         GstPhotographySettings * config);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 gboolean gst_photography_get_config    (GstPhotography         * photo,
                                         GstPhotographySettings * config);
 
-GST_EXPORT
+GST_PHOTOGRAPHY_API
 void     gst_photography_set_autofocus (GstPhotography * photo, gboolean on);
 
 G_END_DECLS