1 files changed, 33 insertions, 0 deletions
diff --git a/src/extension/internal/bitmap/levelChannel.h b/src/extension/internal/bitmap/levelChannel.h
new file mode 100644
index 0000000..d1cc82a
--- /dev/null
+++ b/src/extension/internal/bitmap/levelChannel.h
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2007 Authors:
+ *   Christopher Brown <audiere@gmail.com>
+ *   Ted Gould <ted@gould.cx>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "imagemagick.h"
+
+namespace Inkscape {
+namespace Extension {
+namespace Internal {
+namespace Bitmap {
+
+class LevelChannel : public ImageMagick
+{
+private:
+	double _black_point;
+	double _white_point;
+	double _mid_point;
+	const gchar * _channelName;
+public:
+	void applyEffect(Magick::Image *image) override;
+	void refreshParameters(Inkscape::Extension::Effect *module) override;
+	static void init();
+};
+
+}; /* namespace Bitmap */
+}; /* namespace Internal */
+}; /* namespace Extension */
+}; /* namespace Inkscape */