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diff --git a/arm/neon_scale3x.h b/arm/neon_scale3x.h
new file mode 100644
index 0000000..6abd150
--- /dev/null
+++ b/arm/neon_scale3x.h
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+/**
+ *
+ *  Copyright (C) 2012 Roman Pauer
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy of
+ *  this software and associated documentation files (the "Software"), to deal in
+ *  the Software without restriction, including without limitation the rights to
+ *  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ *  of the Software, and to permit persons to whom the Software is furnished to do
+ *  so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ *
+ */
+
+#if !defined(_NEON_SCALE3X_H_INCLUDED_)
+#define _NEON_SCALE3X_H_INCLUDED_
+
+#include <inttypes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern void neon_scale3x_8_8(const uint8_t *src, uint8_t *dst, unsigned int width, unsigned int srcstride, unsigned int dststride, unsigned int height);
+extern void neon_scale3x_16_16(const uint16_t *src, uint16_t *dst, unsigned int width, unsigned int srcstride, unsigned int dststride, unsigned int height);
+
+extern void neon_scale3x_8_16(const uint8_t *src, uint16_t *dst, const uint32_t *palette, unsigned int width, unsigned int srcstride, unsigned int dststride, unsigned int height);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _NEON_SCALE3X_H_INCLUDED_ */