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webrtc/talk/media/base/constants.h
Shao Changbin e62202fedf Support handling multiple RTX but only generate SDP with RTX associated with VP8. 
This implementation registers RTX-APT map inside RTP sender and receiver.
While it only generates SDP with RTX associated with VP8 to make it
compatible with previous Chrome versions.

Should add following changes after reaches stable,
* Use RTX-APT map for building and restoring RTP packets.
* Add RTX support for RED or VP9 in Video engine.
* Set RTX payload type for RED inside FecConfig in EndToEndTest.

BUG=4024
R=mflodman@webrtc.org, pbos@webrtc.org, pthatcher@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/36889004

Cr-Commit-Position: refs/heads/master@{#9040}
2015-04-21 12:25:42 +00:00

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/*
* libjingle
* Copyright 2012 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TALK_MEDIA_BASE_CONSTANTS_H_
#define TALK_MEDIA_BASE_CONSTANTS_H_
#include <string>
// This file contains constants related to media.
namespace cricket {
extern const int kVideoCodecClockrate;
extern const int kDataCodecClockrate;
extern const int kDataMaxBandwidth; // bps
// Default CPU thresholds.
extern const float kHighSystemCpuThreshold;
extern const float kLowSystemCpuThreshold;
extern const float kProcessCpuThreshold;
extern const char kRtxCodecName[];
extern const char kRedCodecName[];
extern const char kUlpfecCodecName[];
// Codec parameters
extern const char kCodecParamAssociatedPayloadType[];
extern const char kOpusCodecName[];
extern const char kIsacCodecName[];
extern const char kL16CodecName[];
extern const char kG722CodecName[];
extern const char kIlbcCodecName[];
extern const char kPcmuCodecName[];
extern const char kPcmaCodecName[];
extern const char kCnCodecName[];
extern const char kDtmfCodecName[];
// Attribute parameters
extern const char kCodecParamPTime[];
extern const char kCodecParamMaxPTime[];
// fmtp parameters
extern const char kCodecParamMinPTime[];
extern const char kCodecParamSPropStereo[];
extern const char kCodecParamStereo[];
extern const char kCodecParamUseInbandFec[];
extern const char kCodecParamUseDtx[];
extern const char kCodecParamMaxAverageBitrate[];
extern const char kCodecParamMaxPlaybackRate[];
extern const char kCodecParamSctpProtocol[];
extern const char kCodecParamSctpStreams[];
extern const char kParamValueTrue[];
// Parameters are stored as parameter/value pairs. For parameters who do not
// have a value, |kParamValueEmpty| should be used as value.
extern const char kParamValueEmpty[];
// opus parameters.
// Default value for maxptime according to
// http://tools.ietf.org/html/draft-spittka-payload-rtp-opus-03
extern const int kOpusDefaultMaxPTime;
extern const int kOpusDefaultPTime;
extern const int kOpusDefaultMinPTime;
extern const int kOpusDefaultSPropStereo;
extern const int kOpusDefaultStereo;
extern const int kOpusDefaultUseInbandFec;
extern const int kOpusDefaultUseDtx;
extern const int kOpusDefaultMaxPlaybackRate;
// Prefered values in this code base. Note that they may differ from the default
// values in http://tools.ietf.org/html/draft-spittka-payload-rtp-opus-03
// Only frames larger or equal to 10 ms are currently supported in this code
// base.
extern const int kPreferredMaxPTime;
extern const int kPreferredMinPTime;
extern const int kPreferredSPropStereo;
extern const int kPreferredStereo;
extern const int kPreferredUseInbandFec;
// rtcp-fb messages according to RFC 4585
extern const char kRtcpFbParamNack[];
extern const char kRtcpFbNackParamPli[];
// rtcp-fb messages according to
// http://tools.ietf.org/html/draft-alvestrand-rmcat-remb-00
extern const char kRtcpFbParamRemb[];
// ccm submessages according to RFC 5104
extern const char kRtcpFbParamCcm[];
extern const char kRtcpFbCcmParamFir[];
// Google specific parameters
extern const char kCodecParamMaxBitrate[];
extern const char kCodecParamMinBitrate[];
extern const char kCodecParamStartBitrate[];
extern const char kCodecParamMaxQuantization[];
extern const char kCodecParamPort[];
// We put the data codec names here so callers of
// DataEngine::CreateChannel don't have to import rtpdataengine.h or
// sctpdataengine.h to get the codec names they want to pass in.
extern const int kGoogleRtpDataCodecId;
extern const char kGoogleRtpDataCodecName[];
// TODO(pthatcher): Find an id that won't conflict with anything. On
// the other hand, it really shouldn't matter since the id won't be
// used on the wire.
extern const int kGoogleSctpDataCodecId;
extern const char kGoogleSctpDataCodecName[];
extern const char kComfortNoiseCodecName[];
// Header extension for audio levels, as defined in
// http://tools.ietf.org/html/draft-ietf-avtext-client-to-mixer-audio-level-03
extern const int kRtpAudioLevelHeaderExtensionDefaultId;
extern const char kRtpAudioLevelHeaderExtension[];
// Header extension for RTP timestamp offset, see RFC 5450 for details:
// http://tools.ietf.org/html/rfc5450
extern const int kRtpTimestampOffsetHeaderExtensionDefaultId;
extern const char kRtpTimestampOffsetHeaderExtension[];
// Header extension for absolute send time, see url for details:
// http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
extern const int kRtpAbsoluteSenderTimeHeaderExtensionDefaultId;
extern const char kRtpAbsoluteSenderTimeHeaderExtension[];
// Header extension for coordination of video orientation, see url for details:
// http://www.etsi.org/deliver/etsi_ts/126100_126199/126114/12.07.00_60/
// ts_126114v120700p.pdf
extern const int kRtpVideoRotationHeaderExtensionDefaultId;
extern const char kRtpVideoRotationHeaderExtension[];
// We don't support 6 bit CVO. Added here for testing purpose.
extern const char kRtpVideoRotation6BitsHeaderExtensionForTesting[];
extern const int kNumDefaultUnsignalledVideoRecvStreams;
extern const char kVp8CodecName[];
extern const char kVp9CodecName[];
extern const int kDefaultVp8PlType;
extern const int kDefaultVp9PlType;
extern const int kDefaultRedPlType;
extern const int kDefaultUlpfecType;
extern const int kDefaultRtxVp8PlType;
extern const int kDefaultVideoMaxWidth;
extern const int kDefaultVideoMaxHeight;
extern const int kDefaultVideoMaxFramerate;
} // namespace cricket
#endif // TALK_MEDIA_BASE_CONSTANTS_H_
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