1 /* 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "media/base/mediaconstants.h" 12 13 #include <string> 14 15 namespace cricket { 16 17 const int kVideoCodecClockrate = 90000; 18 const int kDataCodecClockrate = 90000; 19 const int kDataMaxBandwidth = 30720; // bps 20 21 const float kHighSystemCpuThreshold = 0.85f; 22 const float kLowSystemCpuThreshold = 0.65f; 23 const float kProcessCpuThreshold = 0.10f; 24 25 const char kRtxCodecName[] = "rtx"; 26 const char kRedCodecName[] = "red"; 27 const char kUlpfecCodecName[] = "ulpfec"; 28 29 // TODO(brandtr): Change this to 'flexfec' when we are confident that the 30 // header format is not changing anymore. 31 const char kFlexfecCodecName[] = "flexfec-03"; 32 33 // draft-ietf-payload-flexible-fec-scheme-02.txt 34 const char kFlexfecFmtpRepairWindow[] = "repair-window"; 35 36 const char kCodecParamAssociatedPayloadType[] = "apt"; 37 38 const char kOpusCodecName[] = "opus"; 39 const char kIsacCodecName[] = "ISAC"; 40 const char kL16CodecName[] = "L16"; 41 const char kG722CodecName[] = "G722"; 42 const char kIlbcCodecName[] = "ILBC"; 43 const char kPcmuCodecName[] = "PCMU"; 44 const char kPcmaCodecName[] = "PCMA"; 45 const char kCnCodecName[] = "CN"; 46 const char kDtmfCodecName[] = "telephone-event"; 47 48 // draft-spittka-payload-rtp-opus-03.txt 49 const char kCodecParamPTime[] = "ptime"; 50 const char kCodecParamMaxPTime[] = "maxptime"; 51 const char kCodecParamMinPTime[] = "minptime"; 52 const char kCodecParamSPropStereo[] = "sprop-stereo"; 53 const char kCodecParamStereo[] = "stereo"; 54 const char kCodecParamUseInbandFec[] = "useinbandfec"; 55 const char kCodecParamUseDtx[] = "usedtx"; 56 const char kCodecParamMaxAverageBitrate[] = "maxaveragebitrate"; 57 const char kCodecParamMaxPlaybackRate[] = "maxplaybackrate"; 58 59 const char kCodecParamSctpProtocol[] = "protocol"; 60 const char kCodecParamSctpStreams[] = "streams"; 61 62 const char kParamValueTrue[] = "1"; 63 const char kParamValueEmpty[] = ""; 64 65 const int kOpusDefaultMaxPTime = 120; 66 const int kOpusDefaultPTime = 20; 67 const int kOpusDefaultMinPTime = 3; 68 const int kOpusDefaultSPropStereo = 0; 69 const int kOpusDefaultStereo = 0; 70 const int kOpusDefaultUseInbandFec = 0; 71 const int kOpusDefaultUseDtx = 0; 72 const int kOpusDefaultMaxPlaybackRate = 48000; 73 74 const int kPreferredMaxPTime = 120; 75 const int kPreferredMinPTime = 10; 76 const int kPreferredSPropStereo = 0; 77 const int kPreferredStereo = 0; 78 const int kPreferredUseInbandFec = 0; 79 80 const char kRtcpFbParamNack[] = "nack"; 81 const char kRtcpFbNackParamPli[] = "pli"; 82 const char kRtcpFbParamRemb[] = "goog-remb"; 83 const char kRtcpFbParamTransportCc[] = "transport-cc"; 84 85 const char kRtcpFbParamCcm[] = "ccm"; 86 const char kRtcpFbCcmParamFir[] = "fir"; 87 const char kCodecParamMaxBitrate[] = "x-google-max-bitrate"; 88 const char kCodecParamMinBitrate[] = "x-google-min-bitrate"; 89 const char kCodecParamStartBitrate[] = "x-google-start-bitrate"; 90 const char kCodecParamMaxQuantization[] = "x-google-max-quantization"; 91 const char kCodecParamPort[] = "x-google-port"; 92 93 const int kGoogleRtpDataCodecPlType = 109; 94 const char kGoogleRtpDataCodecName[] = "google-data"; 95 96 const int kGoogleSctpDataCodecPlType = 108; 97 const char kGoogleSctpDataCodecName[] = "google-sctp-data"; 98 99 const char kComfortNoiseCodecName[] = "CN"; 100 101 const char kVp8CodecName[] = "VP8"; 102 const char kVp9CodecName[] = "VP9"; 103 const char kH264CodecName[] = "H264"; 104 105 // RFC 6184 RTP Payload Format for H.264 video 106 const char kH264FmtpProfileLevelId[] = "profile-level-id"; 107 const char kH264FmtpLevelAsymmetryAllowed[] = "level-asymmetry-allowed"; 108 const char kH264FmtpPacketizationMode[] = "packetization-mode"; 109 const char kH264FmtpSpropParameterSets[] = "sprop-parameter-sets"; 110 const char kH264ProfileLevelConstrainedBaseline[] = "42e01f"; 111 112 const int kDefaultVideoMaxFramerate = 60; 113 } // namespace cricket 114