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7120742701
Now that we have moved WebRTC from src/webrtc to src/, common_types.h and typedefs.h are triggering a cpplint error. The cpplint complaint is: Include the directory when naming .h files [build/include] [4] This CL disables the error but we have to remove these two headers from the root directory. NOPRESUBMIT=true Bug: webrtc:5876 Change-Id: I08e1b69aadcc4b28ab83bf25e3819d135d41d333 Reviewed-on: https://webrtc-review.googlesource.com/1577 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@google.com> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19859}
50 lines
2.1 KiB
C++
50 lines
2.1 KiB
C++
/*
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* Copyright (c) 2016 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 MODULES_AUDIO_CODING_NETEQ_CROSS_CORRELATION_H_
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#define MODULES_AUDIO_CODING_NETEQ_CROSS_CORRELATION_H_
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#include "common_types.h" // NOLINT(build/include)
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namespace webrtc {
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// The function calculates the cross-correlation between two sequences
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// |sequence_1| and |sequence_2|. |sequence_1| is taken as reference, with
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// |sequence_1_length| as its length. |sequence_2| slides for the calculation of
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// cross-correlation. The result will be saved in |cross_correlation|.
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// |cross_correlation_length| correlation points are calculated.
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// The corresponding lag starts from 0, and increases with a step of
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// |cross_correlation_step|. The result is without normalization. To avoid
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// overflow, the result will be right shifted. The amount of shifts will be
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// returned.
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//
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// Input:
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// - sequence_1 : First sequence (reference).
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// - sequence_2 : Second sequence (sliding during calculation).
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// - sequence_1_length : Length of |sequence_1|.
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// - cross_correlation_length : Number of cross-correlations to calculate.
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// - cross_correlation_step : Step in the lag for the cross-correlation.
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//
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// Output:
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// - cross_correlation : The cross-correlation in Q(-right_shifts)
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//
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// Return:
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// Number of right shifts in cross_correlation.
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int CrossCorrelationWithAutoShift(const int16_t* sequence_1,
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const int16_t* sequence_2,
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size_t sequence_1_length,
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size_t cross_correlation_length,
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int cross_correlation_step,
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int32_t* cross_correlation);
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} // namespace webrtc
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#endif // MODULES_AUDIO_CODING_NETEQ_CROSS_CORRELATION_H_
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