1 /* 2 * libjingle 3 * Copyright 2012 Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TALK_MEDIA_BASE_CONSTANTS_H_ 29 #define TALK_MEDIA_BASE_CONSTANTS_H_ 30 31 #include <string> 32 33 // This file contains constants related to media. 34 35 namespace cricket { 36 37 extern const int kVideoCodecClockrate; 38 extern const int kDataCodecClockrate; 39 extern const int kDataMaxBandwidth; // bps 40 41 // Default CPU thresholds. 42 extern const float kHighSystemCpuThreshold; 43 extern const float kLowSystemCpuThreshold; 44 extern const float kProcessCpuThreshold; 45 46 extern const char kRtxCodecName[]; 47 extern const char kRedCodecName[]; 48 extern const char kUlpfecCodecName[]; 49 50 // Codec parameters 51 extern const char kCodecParamAssociatedPayloadType[]; 52 53 extern const char kOpusCodecName[]; 54 extern const char kIsacCodecName[]; 55 extern const char kL16CodecName[]; 56 extern const char kG722CodecName[]; 57 extern const char kIlbcCodecName[]; 58 extern const char kPcmuCodecName[]; 59 extern const char kPcmaCodecName[]; 60 extern const char kCnCodecName[]; 61 extern const char kDtmfCodecName[]; 62 63 // Attribute parameters 64 extern const char kCodecParamPTime[]; 65 extern const char kCodecParamMaxPTime[]; 66 // fmtp parameters 67 extern const char kCodecParamMinPTime[]; 68 extern const char kCodecParamSPropStereo[]; 69 extern const char kCodecParamStereo[]; 70 extern const char kCodecParamUseInbandFec[]; 71 extern const char kCodecParamUseDtx[]; 72 extern const char kCodecParamMaxAverageBitrate[]; 73 extern const char kCodecParamMaxPlaybackRate[]; 74 extern const char kCodecParamSctpProtocol[]; 75 extern const char kCodecParamSctpStreams[]; 76 77 extern const char kParamValueTrue[]; 78 // Parameters are stored as parameter/value pairs. For parameters who do not 79 // have a value, |kParamValueEmpty| should be used as value. 80 extern const char kParamValueEmpty[]; 81 82 // opus parameters. 83 // Default value for maxptime according to 84 // http://tools.ietf.org/html/draft-spittka-payload-rtp-opus-03 85 extern const int kOpusDefaultMaxPTime; 86 extern const int kOpusDefaultPTime; 87 extern const int kOpusDefaultMinPTime; 88 extern const int kOpusDefaultSPropStereo; 89 extern const int kOpusDefaultStereo; 90 extern const int kOpusDefaultUseInbandFec; 91 extern const int kOpusDefaultUseDtx; 92 extern const int kOpusDefaultMaxPlaybackRate; 93 94 // Prefered values in this code base. Note that they may differ from the default 95 // values in http://tools.ietf.org/html/draft-spittka-payload-rtp-opus-03 96 // Only frames larger or equal to 10 ms are currently supported in this code 97 // base. 98 extern const int kPreferredMaxPTime; 99 extern const int kPreferredMinPTime; 100 extern const int kPreferredSPropStereo; 101 extern const int kPreferredStereo; 102 extern const int kPreferredUseInbandFec; 103 104 // rtcp-fb messages according to RFC 4585 105 extern const char kRtcpFbParamNack[]; 106 extern const char kRtcpFbNackParamPli[]; 107 // rtcp-fb messages according to 108 // http://tools.ietf.org/html/draft-alvestrand-rmcat-remb-00 109 extern const char kRtcpFbParamRemb[]; 110 // rtcp-fb messages according to 111 // https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01 112 extern const char kRtcpFbParamTransportCc[]; 113 // ccm submessages according to RFC 5104 114 extern const char kRtcpFbParamCcm[]; 115 extern const char kRtcpFbCcmParamFir[]; 116 // Google specific parameters 117 extern const char kCodecParamMaxBitrate[]; 118 extern const char kCodecParamMinBitrate[]; 119 extern const char kCodecParamStartBitrate[]; 120 extern const char kCodecParamMaxQuantization[]; 121 extern const char kCodecParamPort[]; 122 123 // We put the data codec names here so callers of 124 // DataEngine::CreateChannel don't have to import rtpdataengine.h or 125 // sctpdataengine.h to get the codec names they want to pass in. 126 extern const int kGoogleRtpDataCodecId; 127 extern const char kGoogleRtpDataCodecName[]; 128 129 // TODO(pthatcher): Find an id that won't conflict with anything. On 130 // the other hand, it really shouldn't matter since the id won't be 131 // used on the wire. 132 extern const int kGoogleSctpDataCodecId; 133 extern const char kGoogleSctpDataCodecName[]; 134 135 extern const char kComfortNoiseCodecName[]; 136 137 // Header extension for audio levels, as defined in 138 // http://tools.ietf.org/html/draft-ietf-avtext-client-to-mixer-audio-level-03 139 extern const int kRtpAudioLevelHeaderExtensionDefaultId; 140 extern const char kRtpAudioLevelHeaderExtension[]; 141 142 // Header extension for RTP timestamp offset, see RFC 5450 for details: 143 // http://tools.ietf.org/html/rfc5450 144 extern const int kRtpTimestampOffsetHeaderExtensionDefaultId; 145 extern const char kRtpTimestampOffsetHeaderExtension[]; 146 147 // Header extension for absolute send time, see url for details: 148 // http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time 149 extern const int kRtpAbsoluteSenderTimeHeaderExtensionDefaultId; 150 extern const char kRtpAbsoluteSenderTimeHeaderExtension[]; 151 152 // Header extension for coordination of video orientation, see url for details: 153 // http://www.etsi.org/deliver/etsi_ts/126100_126199/126114/12.07.00_60/ 154 // ts_126114v120700p.pdf 155 extern const int kRtpVideoRotationHeaderExtensionDefaultId; 156 extern const char kRtpVideoRotationHeaderExtension[]; 157 // We don't support 6 bit CVO. Added here for testing purpose. 158 extern const char kRtpVideoRotation6BitsHeaderExtensionForTesting[]; 159 160 // Header extension for transport sequence number, see url for details: 161 // http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions 162 extern const int kRtpTransportSequenceNumberHeaderExtensionDefaultId; 163 extern const char kRtpTransportSequenceNumberHeaderExtension[]; 164 165 extern const int kNumDefaultUnsignalledVideoRecvStreams; 166 167 extern const char kVp8CodecName[]; 168 extern const char kVp9CodecName[]; 169 extern const char kH264CodecName[]; 170 171 extern const int kDefaultVp8PlType; 172 extern const int kDefaultVp9PlType; 173 extern const int kDefaultH264PlType; 174 extern const int kDefaultRedPlType; 175 extern const int kDefaultUlpfecType; 176 extern const int kDefaultRtxVp8PlType; 177 178 extern const int kDefaultVideoMaxWidth; 179 extern const int kDefaultVideoMaxHeight; 180 extern const int kDefaultVideoMaxFramerate; 181 } // namespace cricket 182 183 #endif // TALK_MEDIA_BASE_CONSTANTS_H_ 184 185
