/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef COMMON_AUDIO_SIGNAL_PROCESSING_DOT_PRODUCT_WITH_SCALE_H_
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#define COMMON_AUDIO_SIGNAL_PROCESSING_DOT_PRODUCT_WITH_SCALE_H_
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#include <stdint.h>
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#include <string.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Calculates the dot product between two (int16_t) vectors.
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//
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// Input:
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// - vector1 : Vector 1
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// - vector2 : Vector 2
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// - vector_length : Number of samples used in the dot product
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// - scaling : The number of right bit shifts to apply on each term
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// during calculation to avoid overflow, i.e., the
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// output will be in Q(-|scaling|)
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//
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// Return value : The dot product in Q(-scaling)
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int32_t WebRtcSpl_DotProductWithScale(const int16_t* vector1,
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const int16_t* vector2,
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size_t length,
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int scaling);
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif // COMMON_AUDIO_SIGNAL_PROCESSING_DOT_PRODUCT_WITH_SCALE_H_
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