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/*
* Copyright (c) 2017 The WebRTC 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 COMMON_AUDIO_SIGNAL_PROCESSING_DOT_PRODUCT_WITH_SCALE_H_
#define COMMON_AUDIO_SIGNAL_PROCESSING_DOT_PRODUCT_WITH_SCALE_H_
#include <stdint.h>
#include <string.h>
#ifdef __cplusplus
extern "C" {
#endif
// Calculates the dot product between two (int16_t) vectors.
//
// Input:
// - vector1 : Vector 1
// - vector2 : Vector 2
// - vector_length : Number of samples used in the dot product
// - scaling : The number of right bit shifts to apply on each term
// during calculation to avoid overflow, i.e., the
// output will be in Q(-`scaling`)
//
// Return value : The dot product in Q(-scaling)
int32_t WebRtcSpl_DotProductWithScale(const int16_t* vector1,
const int16_t* vector2,
size_t length,
int scaling);
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // COMMON_AUDIO_SIGNAL_PROCESSING_DOT_PRODUCT_WITH_SCALE_H_
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