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diff --git a/gpr/source/lib/vc5_common/pixel.h b/gpr/source/lib/vc5_common/pixel.h
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+++ b/gpr/source/lib/vc5_common/pixel.h
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+/*! @file pixel.h
+ *
+ *  @brief The pixel format enumerations define the pixel packing formats that are
+ *  supported by the codec for input to the image unpacking process and for
+ *  output from the image repacking process.
+ *
+ *  @version 1.0.0
+ *
+ *  (C) Copyright 2018 GoPro Inc (http://gopro.com/).
+ *
+ *  Licensed under either:
+ *  - Apache License, Version 2.0, http://www.apache.org/licenses/LICENSE-2.0
+ *  - MIT license, http://opensource.org/licenses/MIT
+ *  at your option.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#ifndef PIXEL_H
+#define PIXEL_H
+
+//! Data type for pixels
+typedef int16_t PIXEL;
+
+//! Minimum and maximum pixel values
+enum {
+	PIXEL_MIN = INT16_MIN,
+	PIXEL_MAX = INT16_MAX,
+};
+
+//! Alternative definition for wavelet coefficients
+typedef int16_t COEFFICIENT;
+
+//! Minimum and maximum coefficient values
+enum
+{
+	COEFFICIENT_MIN = INT16_MIN,
+	COEFFICIENT_MAX = INT16_MAX,
+};
+
+/*!
+	@brief Pixels formats supported by the codec
+
+	The pixel format is only the packing arrangement for color components and
+	does not specify whether the image is interlaced or the bottom row is first.
+
+	@todo Need to add support for more pixel formats to the reference decoder
+*/
+typedef enum
+{
+	PIXEL_FORMAT_UNKNOWN = 0,
+
+    PIXEL_FORMAT_RAW_RGGB_16  = 104,
+
+    PIXEL_FORMAT_RAW_RGGB_12  = 106,
+    PIXEL_FORMAT_RAW_RGGB_12P = 107,
+    PIXEL_FORMAT_RAW_RGGB_14  = 108,
+
+    PIXEL_FORMAT_RAW_GBRG_12  = 109,
+    PIXEL_FORMAT_RAW_GBRG_12P = 110,
+    PIXEL_FORMAT_RAW_GBRG_14  = 111,
+    
+    PIXEL_FORMAT_RAW_DEFAULT = PIXEL_FORMAT_RAW_RGGB_14,
+    
+	//! Input pixel formats above this value must be encoded into the sample
+	PIXEL_FORMAT_TAG_REQUIRED = 100,
+
+} PIXEL_FORMAT;
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*!
+@brief Force a pixel value to be in range
+*/
+STATIC_INLINE PIXEL ClampPixel(int32_t value)
+{
+	// Check for values that are outside the range (for debugging)
+	assert(PIXEL_MIN <= value && value <= PIXEL_MAX);
+
+	if (value < PIXEL_MIN)
+		value = PIXEL_MIN;
+	else
+		if (value > PIXEL_MAX)
+			value = PIXEL_MAX;
+
+	return (PIXEL)value;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // PIXEL_H