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db42ed299a
- This mode estimates relative packet arrival delay for each incoming packet and adds that value to the histogram. - The histogram buckets are 20 milliseconds each instead of whole packets. - The functionality is enabled with a field trial for experimentation. Bug: webrtc:10333 Change-Id: I8f7499c56802fc1aa1ced2f5310fdd2ef1403515 Reviewed-on: https://webrtc-review.googlesource.com/c/123923 Commit-Queue: Jakob Ivarsson <jakobi@webrtc.org> Reviewed-by: Minyue Li <minyue@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26871}
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
/*
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* Copyright (c) 2019 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_HISTOGRAM_H_
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#define MODULES_AUDIO_CODING_NETEQ_HISTOGRAM_H_
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#include <string.h> // Provide access to size_t.
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#include <vector>
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namespace webrtc {
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class Histogram {
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public:
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// Creates histogram with capacity |num_buckets| and |forget_factor| in Q15.
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Histogram(size_t num_buckets, int forget_factor);
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virtual ~Histogram();
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// Resets the histogram to the default start distribution.
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virtual void Reset();
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// Add entry in bucket |index|.
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virtual void Add(int index);
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// Calculates the quantile at |probability| (in Q30) of the histogram
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// distribution.
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virtual int Quantile(int probability);
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// Apply compression or stretching to the histogram.
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virtual void Scale(int old_bucket_width, int new_bucket_width);
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// Returns the number of buckets in the histogram.
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virtual int NumBuckets() const;
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// Returns the probability for each bucket in Q30.
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std::vector<int> buckets() const { return buckets_; }
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int forget_factor() const { return base_forget_factor_; }
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// Made public for testing.
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static std::vector<int> ScaleBuckets(const std::vector<int>& buckets,
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int old_bucket_width,
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int new_bucket_width);
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private:
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std::vector<int> buckets_;
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int forget_factor_; // Q15
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const int base_forget_factor_;
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_CODING_NETEQ_HISTOGRAM_H_
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