app: Generate GLib enums with glib-mkenums

gst-libs/gst/app/Makefile.am

@@ -2,11 +2,18 @@ lib_LTLIBRARIES = libgstapp-@GST_API_VERSION@.la
 
 glib_enum_define = GST_APP
 glib_gen_prefix = __gst_app
-glib_gen_basename = gstapp
+glib_gen_basename = app
+
+glib_enum_headers = gstappsrc.h
+
+built_sources = app-enumtypes.c
+built_headers = app-enumtypes.h
+BUILT_SOURCES = $(built_sources) $(built_headers)
 
 include $(top_srcdir)/common/gst-glib-gen.mak
 
 libgstapp_@GST_API_VERSION@_la_SOURCES = gstappsrc.c gstappsink.c
+nodist_libgstapp_@GST_API_VERSION@_la_SOURCES = $(BUILT_SOURCES)
 libgstapp_@GST_API_VERSION@_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) \
 	$(GST_BASE_CFLAGS) $(GST_CFLAGS)
 libgstapp_@GST_API_VERSION@_la_LIBADD = $(GST_BASE_LIBS)
@@ -17,6 +24,9 @@ libgstapp_@GST_API_VERSION@include_HEADERS = \
 	app.h \
 	gstappsrc.h \
 	gstappsink.h
+nodist_libgstapp_@GST_API_VERSION@include_HEADERS = app-enumtypes.h
+
+CLEANFILES = $(BUILT_SOURCES)
 
 if HAVE_INTROSPECTION
 BUILT_GIRSOURCES = GstApp-@GST_API_VERSION@.gir
@@ -69,5 +79,5 @@ typelibs_DATA = $(BUILT_GIRSOURCES:.gir=.typelib)
 		--includedir=`PKG_CONFIG_PATH="$(GST_PKG_CONFIG_PATH)" $(PKG_CONFIG) --variable=girdir gstreamer-base-@GST_API_VERSION@` \
 		$(INTROSPECTION_COMPILER_OPTS) $< -o $(@F)
 
-CLEANFILES = $(BUILT_GIRSOURCES) $(typelibs_DATA)
+CLEANFILES += $(BUILT_GIRSOURCES) $(typelibs_DATA)
 endif

gst-libs/gst/app/app_mkenum.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+
+# This is in its own file rather than inside meson.build
+# because a) mixing the two is ugly and b) trying to
+# make special characters such as \n go through all
+# backends is a fool's errand.
+
+import sys, os, shutil, subprocess
+
+h_array = ['--fhead',
+           "#ifndef __GST_APP_ENUM_TYPES_H__\n#define __GST_APP_ENUM_TYPES_H__\n\n#include <glib-object.h>\n\nG_BEGIN_DECLS\n",
+           '--fprod',
+           "\n/* enumerations from \"@filename@\" */\n",
+           '--vhead',
+           'GType @enum_name@_get_type (void);\n#define GST_TYPE_@ENUMSHORT@ (@enum_name@_get_type())\n',
+           '--ftail',
+           'G_END_DECLS\n\n#endif /* __GST_APP_ENUM_TYPES_H__ */',
+           ]
+
+c_array = ['--fhead',
+           "#include \"app-enumtypes.h\"\n\n#include \"app.h\" \n#include \"gstappsrc.h\"",
+           '--fprod',
+           "\n/* enumerations from \"@filename@\" */",
+           '--vhead',
+           "GType\n@enum_name@_get_type (void)\n{\n  static volatile gsize g_define_type_id__volatile = 0;\n  if (g_once_init_enter (&g_define_type_id__volatile)) {\n    static const G@Type@Value values[] = {",
+           '--vprod',
+           "      { @VALUENAME@, \"@VALUENAME@\", \"@valuenick@\" },",
+           '--vtail',
+           "      { 0, NULL, NULL }\n    };\n    GType g_define_type_id = g_@type@_register_static (\"@EnumName@\", values);\n    g_once_init_leave (&g_define_type_id__volatile, g_define_type_id);\n  }\n  return g_define_type_id__volatile;\n}\n",
+           ]
+
+cmd = []
+argn = 1
+# Find the full command needed to run glib-mkenums
+# On UNIX-like, this is just the full path to glib-mkenums
+# On Windows, this is the full path to interpreter + full path to glib-mkenums
+for arg in sys.argv[1:]:
+    cmd.append(arg)
+    argn += 1
+    if arg.endswith('glib-mkenums'):
+        break
+ofilename = sys.argv[argn]
+headers = sys.argv[argn + 1:]
+
+if ofilename.endswith('.h'):
+    arg_array = h_array
+else:
+    arg_array = c_array
+
+cmd_array = cmd + arg_array + headers
+pc = subprocess.Popen(cmd_array, stdout=subprocess.PIPE)
+(stdo, _) = pc.communicate()
+if pc.returncode != 0:
+    sys.exit(pc.returncode)
+open(ofilename, 'wb').write(stdo)

gst-libs/gst/app/gstappsrc.c

@@ -191,26 +191,6 @@ GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS_ANY);
 
-GType
-gst_app_stream_type_get_type (void)
-{
-  static volatile gsize stream_type_type = 0;
-  static const GEnumValue stream_type[] = {
-    {GST_APP_STREAM_TYPE_STREAM, "GST_APP_STREAM_TYPE_STREAM", "stream"},
-    {GST_APP_STREAM_TYPE_SEEKABLE, "GST_APP_STREAM_TYPE_SEEKABLE", "seekable"},
-    {GST_APP_STREAM_TYPE_RANDOM_ACCESS, "GST_APP_STREAM_TYPE_RANDOM_ACCESS",
-        "random-access"},
-    {0, NULL, NULL}
-  };
-
-  if (g_once_init_enter (&stream_type_type)) {
-    GType tmp = g_enum_register_static ("GstAppStreamType", stream_type);
-    g_once_init_leave (&stream_type_type, tmp);
-  }
-
-  return (GType) stream_type_type;
-}
-
 static void gst_app_src_uri_handler_init (gpointer g_iface,
     gpointer iface_data);
 

gst-libs/gst/app/gstappsrc.h

@@ -22,6 +22,7 @@
 
 #include <gst/gst.h>
 #include <gst/base/gstpushsrc.h>
+#include <gst/app/app-enumtypes.h>
 
 G_BEGIN_DECLS
 
@@ -117,10 +118,6 @@ struct _GstAppSrcClass
 
 GType gst_app_src_get_type(void);
 
-/* GType getter for GstAppStreamType */
-#define GST_TYPE_APP_STREAM_TYPE (gst_app_stream_type_get_type ())
-GType gst_app_stream_type_get_type (void);
-
 void             gst_app_src_set_caps                (GstAppSrc *appsrc, const GstCaps *caps);
 GstCaps*         gst_app_src_get_caps                (GstAppSrc *appsrc);
 

gst-libs/gst/app/meson.build

@@ -1,10 +1,29 @@
 app_sources = ['gstappsrc.c', 'gstappsink.c']
 
-app_headers = [ 'app.h', 'gstappsrc.h', 'gstappsink.h' ]
+app_mkenum_headers = [
+  'gstappsrc.h',
+]
+
+app_headers = app_mkenum_headers + [ 'app.h', 'gstappsrc.h' ]
 install_headers(app_headers, subdir : 'gstreamer-1.0/gst/app/')
 
+mkenums = find_program('app_mkenum.py')
+gstapp_h = custom_target('gstappenum_h',
+  output : 'app-enumtypes.h',
+  input : app_mkenum_headers,
+  install : true,
+  install_dir : 'include/gstreamer-1.0/gst/app/',
+  command : [mkenums, glib_mkenums, '@OUTPUT@', '@INPUT@'])
+
+gstapp_c = custom_target('gstappenum_c',
+  output : 'app-enumtypes.c',
+  input : app_mkenum_headers,
+  depends : [gstapp_h],
+  command : [mkenums, glib_mkenums, '@OUTPUT@', '@INPUT@'])
+app_gen_sources = [gstapp_h]
+
 gstapp = library('gstapp-@0@'.format(api_version),
-  app_sources,
+  app_sources, gstapp_h, gstapp_c,
   c_args : gst_plugins_base_args,
   include_directories: [configinc, libsinc],
   version : libversion,
@@ -14,10 +33,9 @@ gstapp = library('gstapp-@0@'.format(api_version),
   vs_module_defs: vs_module_defs_dir + 'libgstapp.def',
 )
 
-app_gen_sources = []
 if build_gir
   app_gen_sources += [gnome.generate_gir(gstapp,
-    sources : app_sources + app_headers,
+    sources : app_sources + app_headers + [gstapp_c] + [gstapp_h],
     namespace : 'GstApp',
     nsversion : api_version,
     identifier_prefix : 'Gst',