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diff --git a/source/blender/compositor/operations/COM_ChannelMatteOperation.h b/source/blender/compositor/operations/COM_ChannelMatteOperation.h
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+++ b/source/blender/compositor/operations/COM_ChannelMatteOperation.h
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+/*
+ * Copyright 2012, Blender Foundation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor:
+ *		Dalai Felinto
+ */
+
+#ifndef _COM_ChannelMatteOperation_h
+#define _COM_ChannelMatteOperation_h
+#include "COM_MixBaseOperation.h"
+
+
+/**
+  * this program converts an input colour to an output value.
+  * it assumes we are in sRGB colour space.
+  */
+class ChannelMatteOperation : public NodeOperation {
+private:
+	SocketReader *inputImageProgram;
+
+	int color_space;   /* node->custom1 */
+	int matte_channel; /* node->custom2 */
+	int limit_method;  /* node->algorithm */
+	int limit_channel; /* node->channel */
+	float limit_max;     /* node->storage->t1 */
+	float limit_min;     /* node->storage->t2 */
+
+	float limit_range;
+
+	/** ids to use for the operations (max and simple)
+	  * alpha = in[ids[0]] - max(in[ids[1]], in[ids[2]])
+	  * the simple operation is using:
+	  * alpha = in[ids[0]] - in[ids[1]]
+	  * but to use the same formula and operation for both we do:
+		* ids[2] = ids[1]
+	  * alpha = in[ids[0]] - max(in[ids[1]], in[ids[2]])
+	  */
+	int ids[3];
+public:
+	/**
+	  * Default constructor
+	  */
+	ChannelMatteOperation();
+
+	/**
+	  * the inner loop of this program
+	  */
+	void executePixel(float* color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]);
+
+	void initExecution();
+	void deinitExecution();
+
+	void setSettings(NodeChroma* nodeChroma, const int custom2)
+	{
+		this->limit_max = nodeChroma->t1;
+		this->limit_min = nodeChroma->t2;
+		this->limit_method = nodeChroma->algorithm;
+		this->limit_channel = nodeChroma->channel;
+		this->matte_channel = custom2;
+	}
+};
+#endif