api/uma_metrics.h - src.git - Git at Google


            
            /*

            
             *  Copyright 2014 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.

            
             */


            // This file contains enums related to Chrome UMA histograms. See

            
            // https://chromium.googlesource.com/chromium/src.git/+/HEAD/tools/metrics/histograms/README.md#requirements

            
            // for requirements when adding or changing metrics.


            #ifndef API_UMA_METRICS_H_

            
            #define API_UMA_METRICS_H_


            namespace webrtc {


            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused.

            
            enum PeerConnectionAddressFamilyCounter {

            
              kPeerConnection_IPv4 = 0,

            
              kPeerConnection_IPv6 = 1,

            
              kBestConnections_IPv4 = 2,

            
              kBestConnections_IPv6 = 3,

            
              kPeerConnectionAddressFamilyCounter_Max

            
            };


            // This enum defines types for UMA samples, which will have a range.

            
            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused.

            
            enum PeerConnectionMetricsName {

            
              kNetworkInterfaces_IPv4 = 0,  // Number of IPv4 interfaces.

            
              kNetworkInterfaces_IPv6 = 1,  // Number of IPv6 interfaces.

            
              kTimeToConnect = 2,           // In milliseconds.

            
              kLocalCandidates_IPv4 = 3,    // Number of IPv4 local candidates.

            
              kLocalCandidates_IPv6 = 4,    // Number of IPv6 local candidates.

            
              kPeerConnectionMetricsName_Max

            
            };


            // The IceCandidatePairType has the format of

            
            // <local_candidate_type>_<remote_candidate_type>. It is recorded based on the

            
            // type of candidate pair used when the PeerConnection first goes to a completed

            
            // state. When BUNDLE is enabled, only the first transport gets recorded.

            
            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused.

            
            enum IceCandidatePairType {

            
              // HostHost is deprecated. It was replaced with the set of types at the bottom

            
              // to report private or public host IP address.

            
              kIceCandidatePairHostHost [[deprecated]] = 0,

            
              kIceCandidatePairHostSrflx = 1,

            
              kIceCandidatePairHostRelay = 2,

            
              kIceCandidatePairHostPrflx = 3,

            
              kIceCandidatePairSrflxHost = 4,

            
              kIceCandidatePairSrflxSrflx = 5,

            
              kIceCandidatePairSrflxRelay = 6,

            
              kIceCandidatePairSrflxPrflx = 7,

            
              kIceCandidatePairRelayHost = 8,

            
              kIceCandidatePairRelaySrflx = 9,

            
              kIceCandidatePairRelayRelay = 10,

            
              kIceCandidatePairRelayPrflx = 11,

            
              kIceCandidatePairPrflxHost = 12,

            
              kIceCandidatePairPrflxSrflx = 13,

            
              kIceCandidatePairPrflxRelay = 14,


              // The following 9 types tell whether local and remote hosts have hostname,

            
              // private or public IP addresses.

            
              kIceCandidatePairHostPrivateHostPrivate = 15,

            
              kIceCandidatePairHostPrivateHostPublic = 16,

            
              kIceCandidatePairHostPublicHostPrivate = 17,

            
              kIceCandidatePairHostPublicHostPublic = 18,

            
              kIceCandidatePairHostNameHostName = 19,

            
              kIceCandidatePairHostNameHostPrivate = 20,

            
              kIceCandidatePairHostNameHostPublic = 21,

            
              kIceCandidatePairHostPrivateHostName = 22,

            
              kIceCandidatePairHostPublicHostName = 23,

            
              kIceCandidatePairMax

            
            };


            // The difference between PeerConnectionEnumCounter and

            
            // PeerConnectionMetricsName is that the "EnumCounter" is only counting the

            
            // occurrences of events, while "Name" has a value associated with it which is

            
            // used to form a histogram.


            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused.

            
            enum KeyExchangeProtocolMedia {

            
              kEnumCounterKeyProtocolMediaTypeDtlsAudio = 0,

            
              kEnumCounterKeyProtocolMediaTypeDtlsVideo = 1,

            
              kEnumCounterKeyProtocolMediaTypeDtlsData = 2,

            
              kEnumCounterKeyProtocolMediaTypeSdesAudio = 3,

            
              kEnumCounterKeyProtocolMediaTypeSdesVideo = 4,

            
              kEnumCounterKeyProtocolMediaTypeSdesData = 5,

            
              kEnumCounterKeyProtocolMediaTypeMax

            
            };


            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused.

            
            enum SdpSemanticRequested {

            
              kSdpSemanticRequestDefault = 0,

            
              kSdpSemanticRequestPlanB = 1,

            
              kSdpSemanticRequestUnifiedPlan = 2,

            
              kSdpSemanticRequestMax

            
            };


            // Metric for counting the outcome of adding an ICE candidate

            
            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused.

            
            enum AddIceCandidateResult {

            
              kAddIceCandidateSuccess = 0,

            
              kAddIceCandidateFailClosed = 1,

            
              kAddIceCandidateFailNoRemoteDescription = 2,

            
              kAddIceCandidateFailNullCandidate = 3,

            
              kAddIceCandidateFailNotValid = 4,

            
              kAddIceCandidateFailNotReady = 5,

            
              kAddIceCandidateFailInAddition = 6,

            
              kAddIceCandidateFailNotUsable = 7,

            
              kAddIceCandidateMax

            
            };


            // Metrics for reporting usage of BUNDLE.

            
            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused.

            
            enum BundleUsage {

            
              // There are no m-lines in the SDP, only a session description.

            
              kBundleUsageEmpty = 0,

            
              // Only a data channel is negotiated but BUNDLE is not negotiated.

            
              kBundleUsageNoBundleDatachannelOnly = 1,

            
              // BUNDLE is not negotiated and there is at most one m-line per media type,

            
              kBundleUsageNoBundleSimple = 2,

            
              // BUNDLE is not negotiated and there are multiple m-lines per media type,

            
              kBundleUsageNoBundleComplex = 3,

            
              // Only a data channel is negotiated and BUNDLE is negotiated.

            
              kBundleUsageBundleDatachannelOnly = 4,

            
              // BUNDLE is negotiated but there is at most one m-line per media type,

            
              kBundleUsageBundleSimple = 5,

            
              // BUNDLE is negotiated and there are multiple m-lines per media type,

            
              kBundleUsageBundleComplex = 6,

            
              // Legacy plan-b metrics.

            
              kBundleUsageNoBundlePlanB = 7,

            
              kBundleUsageBundlePlanB = 8,

            
              kBundleUsageMax

            
            };


            // Metrics for reporting configured BUNDLE policy, mapping directly to

            
            // https://w3c.github.io/webrtc-pc/#rtcbundlepolicy-enum

            
            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused.

            
            enum BundlePolicyUsage {

            
              kBundlePolicyUsageBalanced = 0,

            
              kBundlePolicyUsageMaxBundle = 1,

            
              kBundlePolicyUsageMaxCompat = 2,

            
              kBundlePolicyUsageMax

            
            };


            // Metrics for provisional answers as described in

            
            // https://datatracker.ietf.org/doc/html/rfc8829#section-4.1.10.1

            
            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused.

            
            enum ProvisionalAnswerUsage {

            
              kProvisionalAnswerNotUsed = 0,

            
              kProvisionalAnswerLocal = 1,

            
              kProvisionalAnswerRemote = 2,

            
              kProvisionalAnswerMax

            
            };


            // Metrics for RTCRtpMuxPolicy. The only defined value is

            
            // https://w3c.github.io/webrtc-pc/#rtcrtcpmuxpolicy-enum

            
            // "require" but there is a legacy option "negotiate" which

            
            // was removed from the spec.

            
            enum RtcpMuxPolicyUsage {

            
              kRtcpMuxPolicyUsageRequire = 0,

            
              kRtcpMuxPolicyUsageNegotiate = 1,

            
              kRtcpMuxPolicyUsageMax

            
            };


            // Metrics for RTCRtpHeaderEncryptionPolicy (which enables cryptex).

            
            // https://w3c.github.io/webrtc-extensions/#rtp-header-extension-encryption

            
            enum CryptexPolicyUsage {

            
              kCryptexPolicyUsageDisabled = 0,  // Non-spec.

            
              kCryptexPolicyUsageNegotiate = 1,

            
              // Policy was `negotiate` and it was negotiated at session level.

            
              kCryptexPolicyUsageNegotiated = 2,

            
              kCryptexPolicyUsageRequire = 3,

            
              kCryptexPolicyUsageMax

            
            };


            // Metrics for SDP munging.

            
            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused. Keep in (loose) sync with

            
            // SdpMungingType from Chromium's

            
            // tools/metrics/histograms/metadata/web_rtc/enums.xml

            
            enum SdpMungingType {

            
              kNoModification = 0,

            
              kUnknownModification = 1,

            
              kWithoutCreateAnswer = 2,

            
              kWithoutCreateOffer = 3,

            
              kNumberOfContents = 4,

            
              kCurrentDescriptionFailedToParse = 5,  // This is an internal error.

            
              // Transport-related munging.

            
              kIceOptions = 20,

            
              kIcePwd = 21,

            
              kIceUfrag = 22,

            
              kIceMode = 23,

            
              kDtlsSetup = 24,

            
              kMid = 25,

            
              kPayloadTypes = 26,

            
              kSsrcs = 27,

            
              kIceOptionsRenomination = 28,

            
              kDirection = 29,

            
              kRtcpMux = 30,

            
              kIceOptionsTrickle = 31,

            
              kIceCandidateCount = 32,

            
              kBundle = 33,

            
              kBandwidth = 34,

            
              kSframe = 35,

            
              kMsidStream = 36,

            
              kMsidTrack = 37,

            
              kIceOptionsRemoved = 38,

            
              kRejected = 39,

            
              // RTP header extension munging.

            
              kRtpHeaderExtensionRemoved = 40,

            
              kRtpHeaderExtensionAdded = 41,

            
              kRtpHeaderExtensionModified = 42,

            
              kCryptex = 43,

            
              kRtcpXrRcvrRtt = 44,

            
              // Audio-related munging.

            
              kAudioCodecsRemoved = 60,

            
              kAudioCodecsAdded = 61,

            
              kAudioCodecsReordered = 62,

            
              kAudioCodecsAddedMultiOpus = 63,

            
              kAudioCodecsAddedL16 = 64,

            
              kAudioCodecsRtcpFbAudioNack = 65,

            
              kAudioCodecsFmtpOpusFec = 66,

            
              kAudioCodecsFmtpOpusCbr = 67,

            
              kAudioCodecsFmtpOpusStereo = 68,

            
              kAudioCodecsFmtpOpusDtx = 69,

            
              kAudioCodecsFmtp = 70,

            
              kAudioCodecsRtcpFb = 71,

            
              kAudioCodecsRtcpFbRrtr = 72,

            
              kAudioCodecsRtcpReducedSize = 73,

            
              // Video-related munging.

            
              kVideoCodecsRemoved = 80,

            
              kVideoCodecsAdded = 81,

            
              kVideoCodecsReordered = 82,

            
              kVideoCodecsLegacySimulcast = 83,

            
              kVideoCodecsFmtpH264SpsPpsIdrInKeyframe = 84,

            
              kVideoCodecsFmtp = 85,

            
              kVideoCodecsRtcpFb = 86,

            
              kVideoCodecsAddedWithRawPacketization = 87,

            
              kVideoCodecsModifiedWithRawPacketization = 88,

            
              kVideoCodecsRtcpReducedSize = 89,

            
              // DataChannel-related munging.

            
              kDataChannelSctpInit = 100,

            
              kDataChannelMaxMessageSize = 101,

            
              kDataChannelSctpPort = 102,

            
              // Overflow area.

            
              kIceOptionsSped = 110,

            
              kMaxValue,

            
            };


            // The outcome of setting the local description, whether SDP munging is detected

            
            // and if the should be accepted or rejected. Keep in sync with

            
            // SdpMungingOutcome from tools/metrics/histograms/metadata/web_rtc/enums.xml

            
            enum class SdpMungingOutcome {

            
              kAccepted = 0,

            
              kRejected = 1,

            
              kMaxValue = kRejected,

            
            };


            // These values are persisted to logs. Entries should not be renumbered and

            
            // numeric values should never be reused.

            
            enum SdpBandwidthCategory {

            
              kSdpBandwidthParseFailure = 0,

            
              kSdpBandwidthNegativeOne = 1,

            
              kSdpBandwidthZero = 2,

            
              kSdpBandwidthSmall = 3,  // 1 to INT_MAX/1000

            
              kSdpBandwidthLarge = 4,  // INT_MAX/1000 + 1 to INT_MAX

            
              kSdpBandwidthNegative = 5,

            
              kSdpBandwidthMax

            
            };


            // When adding new metrics please consider using the style described in

            
            // https://chromium.googlesource.com/chromium/src.git/+/HEAD/tools/metrics/histograms/README.md#usage

            
            // instead of the legacy enums used above.


            }  // namespace webrtc


            #endif  // API_UMA_METRICS_H_
	/*
	* Copyright 2014 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.
	*/

	// This file contains enums related to Chrome UMA histograms. See
	// https://chromium.googlesource.com/chromium/src.git/+/HEAD/tools/metrics/histograms/README.md#requirements
	// for requirements when adding or changing metrics.

	#ifndef API_UMA_METRICS_H_
	#define API_UMA_METRICS_H_

	namespace webrtc {

	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused.
	enum PeerConnectionAddressFamilyCounter {
	kPeerConnection_IPv4 = 0,
	kPeerConnection_IPv6 = 1,
	kBestConnections_IPv4 = 2,
	kBestConnections_IPv6 = 3,
	kPeerConnectionAddressFamilyCounter_Max
	};

	// This enum defines types for UMA samples, which will have a range.
	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused.
	enum PeerConnectionMetricsName {
	kNetworkInterfaces_IPv4 = 0, // Number of IPv4 interfaces.
	kNetworkInterfaces_IPv6 = 1, // Number of IPv6 interfaces.
	kTimeToConnect = 2, // In milliseconds.
	kLocalCandidates_IPv4 = 3, // Number of IPv4 local candidates.
	kLocalCandidates_IPv6 = 4, // Number of IPv6 local candidates.
	kPeerConnectionMetricsName_Max
	};

	// The IceCandidatePairType has the format of
	// <local_candidate_type>_<remote_candidate_type>. It is recorded based on the
	// type of candidate pair used when the PeerConnection first goes to a completed
	// state. When BUNDLE is enabled, only the first transport gets recorded.
	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused.
	enum IceCandidatePairType {
	// HostHost is deprecated. It was replaced with the set of types at the bottom
	// to report private or public host IP address.
	kIceCandidatePairHostHost [[deprecated]] = 0,
	kIceCandidatePairHostSrflx = 1,
	kIceCandidatePairHostRelay = 2,
	kIceCandidatePairHostPrflx = 3,
	kIceCandidatePairSrflxHost = 4,
	kIceCandidatePairSrflxSrflx = 5,
	kIceCandidatePairSrflxRelay = 6,
	kIceCandidatePairSrflxPrflx = 7,
	kIceCandidatePairRelayHost = 8,
	kIceCandidatePairRelaySrflx = 9,
	kIceCandidatePairRelayRelay = 10,
	kIceCandidatePairRelayPrflx = 11,
	kIceCandidatePairPrflxHost = 12,
	kIceCandidatePairPrflxSrflx = 13,
	kIceCandidatePairPrflxRelay = 14,

	// The following 9 types tell whether local and remote hosts have hostname,
	// private or public IP addresses.
	kIceCandidatePairHostPrivateHostPrivate = 15,
	kIceCandidatePairHostPrivateHostPublic = 16,
	kIceCandidatePairHostPublicHostPrivate = 17,
	kIceCandidatePairHostPublicHostPublic = 18,
	kIceCandidatePairHostNameHostName = 19,
	kIceCandidatePairHostNameHostPrivate = 20,
	kIceCandidatePairHostNameHostPublic = 21,
	kIceCandidatePairHostPrivateHostName = 22,
	kIceCandidatePairHostPublicHostName = 23,
	kIceCandidatePairMax
	};

	// The difference between PeerConnectionEnumCounter and
	// PeerConnectionMetricsName is that the "EnumCounter" is only counting the
	// occurrences of events, while "Name" has a value associated with it which is
	// used to form a histogram.

	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused.
	enum KeyExchangeProtocolMedia {
	kEnumCounterKeyProtocolMediaTypeDtlsAudio = 0,
	kEnumCounterKeyProtocolMediaTypeDtlsVideo = 1,
	kEnumCounterKeyProtocolMediaTypeDtlsData = 2,
	kEnumCounterKeyProtocolMediaTypeSdesAudio = 3,
	kEnumCounterKeyProtocolMediaTypeSdesVideo = 4,
	kEnumCounterKeyProtocolMediaTypeSdesData = 5,
	kEnumCounterKeyProtocolMediaTypeMax
	};

	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused.
	enum SdpSemanticRequested {
	kSdpSemanticRequestDefault = 0,
	kSdpSemanticRequestPlanB = 1,
	kSdpSemanticRequestUnifiedPlan = 2,
	kSdpSemanticRequestMax
	};

	// Metric for counting the outcome of adding an ICE candidate
	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused.
	enum AddIceCandidateResult {
	kAddIceCandidateSuccess = 0,
	kAddIceCandidateFailClosed = 1,
	kAddIceCandidateFailNoRemoteDescription = 2,
	kAddIceCandidateFailNullCandidate = 3,
	kAddIceCandidateFailNotValid = 4,
	kAddIceCandidateFailNotReady = 5,
	kAddIceCandidateFailInAddition = 6,
	kAddIceCandidateFailNotUsable = 7,
	kAddIceCandidateMax
	};

	// Metrics for reporting usage of BUNDLE.
	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused.
	enum BundleUsage {
	// There are no m-lines in the SDP, only a session description.
	kBundleUsageEmpty = 0,
	// Only a data channel is negotiated but BUNDLE is not negotiated.
	kBundleUsageNoBundleDatachannelOnly = 1,
	// BUNDLE is not negotiated and there is at most one m-line per media type,
	kBundleUsageNoBundleSimple = 2,
	// BUNDLE is not negotiated and there are multiple m-lines per media type,
	kBundleUsageNoBundleComplex = 3,
	// Only a data channel is negotiated and BUNDLE is negotiated.
	kBundleUsageBundleDatachannelOnly = 4,
	// BUNDLE is negotiated but there is at most one m-line per media type,
	kBundleUsageBundleSimple = 5,
	// BUNDLE is negotiated and there are multiple m-lines per media type,
	kBundleUsageBundleComplex = 6,
	// Legacy plan-b metrics.
	kBundleUsageNoBundlePlanB = 7,
	kBundleUsageBundlePlanB = 8,
	kBundleUsageMax
	};

	// Metrics for reporting configured BUNDLE policy, mapping directly to
	// https://w3c.github.io/webrtc-pc/#rtcbundlepolicy-enum
	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused.
	enum BundlePolicyUsage {
	kBundlePolicyUsageBalanced = 0,
	kBundlePolicyUsageMaxBundle = 1,
	kBundlePolicyUsageMaxCompat = 2,
	kBundlePolicyUsageMax
	};

	// Metrics for provisional answers as described in
	// https://datatracker.ietf.org/doc/html/rfc8829#section-4.1.10.1
	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused.
	enum ProvisionalAnswerUsage {
	kProvisionalAnswerNotUsed = 0,
	kProvisionalAnswerLocal = 1,
	kProvisionalAnswerRemote = 2,
	kProvisionalAnswerMax
	};

	// Metrics for RTCRtpMuxPolicy. The only defined value is
	// https://w3c.github.io/webrtc-pc/#rtcrtcpmuxpolicy-enum
	// "require" but there is a legacy option "negotiate" which
	// was removed from the spec.
	enum RtcpMuxPolicyUsage {
	kRtcpMuxPolicyUsageRequire = 0,
	kRtcpMuxPolicyUsageNegotiate = 1,
	kRtcpMuxPolicyUsageMax
	};

	// Metrics for RTCRtpHeaderEncryptionPolicy (which enables cryptex).
	// https://w3c.github.io/webrtc-extensions/#rtp-header-extension-encryption
	enum CryptexPolicyUsage {
	kCryptexPolicyUsageDisabled = 0, // Non-spec.
	kCryptexPolicyUsageNegotiate = 1,
	// Policy was `negotiate` and it was negotiated at session level.
	kCryptexPolicyUsageNegotiated = 2,
	kCryptexPolicyUsageRequire = 3,
	kCryptexPolicyUsageMax
	};

	// Metrics for SDP munging.
	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused. Keep in (loose) sync with
	// SdpMungingType from Chromium's
	// tools/metrics/histograms/metadata/web_rtc/enums.xml
	enum SdpMungingType {
	kNoModification = 0,
	kUnknownModification = 1,
	kWithoutCreateAnswer = 2,
	kWithoutCreateOffer = 3,
	kNumberOfContents = 4,
	kCurrentDescriptionFailedToParse = 5, // This is an internal error.
	// Transport-related munging.
	kIceOptions = 20,
	kIcePwd = 21,
	kIceUfrag = 22,
	kIceMode = 23,
	kDtlsSetup = 24,
	kMid = 25,
	kPayloadTypes = 26,
	kSsrcs = 27,
	kIceOptionsRenomination = 28,
	kDirection = 29,
	kRtcpMux = 30,
	kIceOptionsTrickle = 31,
	kIceCandidateCount = 32,
	kBundle = 33,
	kBandwidth = 34,
	kSframe = 35,
	kMsidStream = 36,
	kMsidTrack = 37,
	kIceOptionsRemoved = 38,
	kRejected = 39,
	// RTP header extension munging.
	kRtpHeaderExtensionRemoved = 40,
	kRtpHeaderExtensionAdded = 41,
	kRtpHeaderExtensionModified = 42,
	kCryptex = 43,
	kRtcpXrRcvrRtt = 44,
	// Audio-related munging.
	kAudioCodecsRemoved = 60,
	kAudioCodecsAdded = 61,
	kAudioCodecsReordered = 62,
	kAudioCodecsAddedMultiOpus = 63,
	kAudioCodecsAddedL16 = 64,
	kAudioCodecsRtcpFbAudioNack = 65,
	kAudioCodecsFmtpOpusFec = 66,
	kAudioCodecsFmtpOpusCbr = 67,
	kAudioCodecsFmtpOpusStereo = 68,
	kAudioCodecsFmtpOpusDtx = 69,
	kAudioCodecsFmtp = 70,
	kAudioCodecsRtcpFb = 71,
	kAudioCodecsRtcpFbRrtr = 72,
	kAudioCodecsRtcpReducedSize = 73,
	// Video-related munging.
	kVideoCodecsRemoved = 80,
	kVideoCodecsAdded = 81,
	kVideoCodecsReordered = 82,
	kVideoCodecsLegacySimulcast = 83,
	kVideoCodecsFmtpH264SpsPpsIdrInKeyframe = 84,
	kVideoCodecsFmtp = 85,
	kVideoCodecsRtcpFb = 86,
	kVideoCodecsAddedWithRawPacketization = 87,
	kVideoCodecsModifiedWithRawPacketization = 88,
	kVideoCodecsRtcpReducedSize = 89,
	// DataChannel-related munging.
	kDataChannelSctpInit = 100,
	kDataChannelMaxMessageSize = 101,
	kDataChannelSctpPort = 102,
	// Overflow area.
	kIceOptionsSped = 110,
	kMaxValue,
	};

	// The outcome of setting the local description, whether SDP munging is detected
	// and if the should be accepted or rejected. Keep in sync with
	// SdpMungingOutcome from tools/metrics/histograms/metadata/web_rtc/enums.xml
	enum class SdpMungingOutcome {
	kAccepted = 0,
	kRejected = 1,
	kMaxValue = kRejected,
	};

	// These values are persisted to logs. Entries should not be renumbered and
	// numeric values should never be reused.
	enum SdpBandwidthCategory {
	kSdpBandwidthParseFailure = 0,
	kSdpBandwidthNegativeOne = 1,
	kSdpBandwidthZero = 2,
	kSdpBandwidthSmall = 3, // 1 to INT_MAX/1000
	kSdpBandwidthLarge = 4, // INT_MAX/1000 + 1 to INT_MAX
	kSdpBandwidthNegative = 5,
	kSdpBandwidthMax
	};

	// When adding new metrics please consider using the style described in
	// https://chromium.googlesource.com/chromium/src.git/+/HEAD/tools/metrics/histograms/README.md#usage
	// instead of the legacy enums used above.

	} // namespace webrtc

	#endif // API_UMA_METRICS_H_