14b43beb7c
TBR=niklas.enbom@webrtc.org Review URL: https://webrtc-codereview.appspot.com/915006 git-svn-id: http://webrtc.googlecode.com/svn/trunk@2963 4adac7df-926f-26a2-2b94-8c16560cd09d
47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
/*
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* Copyright (c) 2011 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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#include "test_util.h"
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#include "test_macros.h"
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#include "rtp_dump.h"
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#include <cmath>
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using namespace webrtc;
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// Normal Distribution
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#define PI 3.14159265
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double
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NormalDist(double mean, double stdDev)
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{
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// Creating a Normal distribution variable from two independent uniform
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// variables based on the Box-Muller transform
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double uniform1 = (std::rand() + 1.0) / (RAND_MAX + 1.0);
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double uniform2 = (std::rand() + 1.0) / (RAND_MAX + 1.0);
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return (mean + stdDev * sqrt(-2 * log(uniform1)) * cos(2 * PI * uniform2));
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}
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RTPVideoCodecTypes
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ConvertCodecType(const char* plname)
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{
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if (strncmp(plname,"VP8" , 3) == 0)
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{
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return kRTPVideoVP8;
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}
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else if (strncmp(plname,"I420" , 5) == 0)
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{
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return kRTPVideoI420;
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}
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else
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{
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return kRTPVideoNoVideo; // Default value
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}
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}
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