+# GStreamer OpenGL
+gstgl_dep = dependency('gstreamer-gl-1.0', version : gst_req,
+ fallback : ['gst-plugins-base', 'gstgl_dep'], required: false)
+
+build_gstgl = gstgl_dep.found() # FIXME: add option?
+
+if build_gstgl
+ if gstgl_dep.type_name() == 'pkgconfig'
+ gst_gl_apis = gstgl_dep.get_pkgconfig_variable('gl_apis').split()
+ gst_gl_winsys = gstgl_dep.get_pkgconfig_variable('gl_winsys').split()
+ gst_gl_platforms = gstgl_dep.get_pkgconfig_variable('gl_platforms').split()
+ else
+ gstbase = subproject('gst-plugins-base')
+ gst_gl_apis = gstbase.get_variable('enabled_gl_apis')
+ gst_gl_winsys = gstbase.get_variable('enabled_gl_winsys')
+ gst_gl_platforms = gstbase.get_variable('enabled_gl_platforms')
+ endif
+
+ message('GStreamer OpenGL window systems: @0@'.format(' '.join(gst_gl_winsys)))
+ message('GStreamer OpenGL platforms: @0@'.format(' '.join(gst_gl_platforms)))
+ message('GStreamer OpenGL apis: @0@'.format(' '.join(gst_gl_apis)))
+
+ foreach ws : ['x11', 'wayland', 'android', 'cocoa', 'eagl', 'win32', 'dispmanx', 'viv_fb']
+ set_variable('gst_gl_have_window_@0@'.format(ws), gst_gl_winsys.contains(ws))
+ endforeach
+
+ foreach p : ['glx', 'egl', 'cgl', 'eagl', 'wgl']
+ set_variable('gst_gl_have_platform_@0@'.format(p), gst_gl_platforms.contains(p))
+ endforeach
+
+ foreach api : ['opengl', 'gles2']
+ set_variable('gst_gl_have_api_@0@'.format(api), gst_gl_apis.contains(api))
+ endforeach
+endif
+
+zlib_dep = dependency('zlib', required : false)