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diff --git a/media/libvpx/vp9/encoder/vp9_aq_complexity.h b/media/libvpx/vp9/encoder/vp9_aq_complexity.h
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+/*
+ * Copyright (c) 2014 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+
+#ifndef VP9_ENCODER_VP9_AQ_COMPLEXITY_H_
+#define VP9_ENCODER_VP9_AQ_COMPLEXITY_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "vp9/common/vp9_enums.h"
+
+struct VP9_COMP;
+struct macroblock;
+
+// Select a segment for the current Block.
+void vp9_caq_select_segment(struct VP9_COMP *cpi, struct macroblock *,
+ BLOCK_SIZE bs,
+ int mi_row, int mi_col, int projected_rate);
+
+// This function sets up a set of segments with delta Q values around
+// the baseline frame quantizer.
+void vp9_setup_in_frame_q_adj(struct VP9_COMP *cpi);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // VP9_ENCODER_VP9_AQ_COMPLEXITY_H_