| /* |
| * Copyright (c) 2011 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. |
| */ |
| |
| #include "test_util.h" |
| #include "test_macros.h" |
| #include "rtp_dump.h" |
| #include <cmath> |
| |
| using namespace webrtc; |
| |
| // Normal Distribution |
| #define PI 3.14159265 |
| double |
| NormalDist(double mean, double stdDev) |
| { |
| // Creating a Normal distribution variable from two independent uniform |
| // variables based on the Box-Muller transform |
| double uniform1 = (std::rand() + 1.0) / (RAND_MAX + 1.0); |
| double uniform2 = (std::rand() + 1.0) / (RAND_MAX + 1.0); |
| return (mean + stdDev * sqrt(-2 * log(uniform1)) * cos(2 * PI * uniform2)); |
| } |
| |
| RTPVideoCodecTypes |
| ConvertCodecType(const char* plname) |
| { |
| if (strncmp(plname,"VP8" , 3) == 0) |
| { |
| return kRTPVideoVP8; |
| } |
| else if (strncmp(plname,"I420" , 5) == 0) |
| { |
| return kRTPVideoI420; |
| } |
| else |
| { |
| return kRTPVideoNoVideo; // Default value |
| } |
| } |
| |
