getUserMediaのconstraintsに設定する拡張キー(goog~)

test.js

const (
    MinAspectRatioConstraint = MediaConstraintKey("minAspectRatio")
    MaxAspectRatioConstraint = MediaConstraintKey("maxAspectRatio")
    MaxWidthConstraint       = MediaConstraintKey("maxWidth")
    MinWidthConstraint       = MediaConstraintKey("minWidth")
    MaxHeightConstraint      = MediaConstraintKey("maxHeight")
    MinHeightConstraint      = MediaConstraintKey("minHeight")
    MaxFrameRateConstraint   = MediaConstraintKey("maxFrameRate")
    MinFrameRateConstraint   = MediaConstraintKey("minFrameRate")

    // Constraint keys used by a local audio source.
    // These keys are google specific.
    EchoCancellationConstraint             = MediaConstraintKey("googEchoCancellation")
    ExperimentalEchoCancellationConstraint = MediaConstraintKey("googEchoCancellation2")
    AutoGainControlConstraint              = MediaConstraintKey("googAutoGainControl")
    ExperimentalAutoGainControlConstraint  = MediaConstraintKey("googAutoGainControl2")
    NoiseSuppressionConstraint             = MediaConstraintKey("googNoiseSuppression")
    ExperimentalNoiseSuppressionConstraint = MediaConstraintKey("googNoiseSuppression2")
    HighpassFilterConstraint               = MediaConstraintKey("googHighpassFilter")
    TypingNoiseDetectionConstraint         = MediaConstraintKey("googTypingNoiseDetection")
    AudioMirroringConstraint               = MediaConstraintKey("googAudioMirroring")

    // Google-specific constraint keys for a local video source
    NoiseReductionConstraint            = MediaConstraintKey("googNoiseReduction")
    LeakyBucketConstraint               = MediaConstraintKey("googLeakyBucket")
    TemporalLayeredScreencastConstraint = MediaConstraintKey("googTemporalLayeredScreencast")

    // Constraint keys for CreateOffer / CreateAnswer
    // Specified by the W3C PeerConnection spec
    OfferToReceiveVideoConstraint    = MediaConstraintKey("OfferToReceiveVideo")
    OfferToReceiveAudioConstraint    = MediaConstraintKey("OfferToReceiveAudio")
    VoiceActivityDetectionConstraint = MediaConstraintKey("VoiceActivityDetection")
    IceRestartConstraint             = MediaConstraintKey("IceRestart")
    // These keys are google specific.
    UseRtpMuxConstraint = MediaConstraintKey("googUseRtpMUX")

    // PeerConnection constraint keys.
    // Temporary pseudo-constraints used to enable DTLS-SRTP
    EnableDtlsSrtpConstraint = MediaConstraintKey("DtlsSrtpKeyAgreement")
    // Temporary pseudo-constraints used to enable DataChannels
    EnableRtpDataChannelsConstraint = MediaConstraintKey("RtpDataChannels")
    // Google-specific constraint keys.
    // Temporary pseudo-constraint for enabling DSCP through JS.
    EnableDscpConstraint = MediaConstraintKey("googDscp")
    // Constraint to enable IPv6 through JS.
    EnableIPv6Constraint = MediaConstraintKey("googIPv6")
    // Temporary constraint to enable suspend below min bitrate feature.
    EnableVideoSuspendBelowMinBitrateConstraint = MediaConstraintKey("googSuspendBelowMinBitrate")
    ImprovedWifiBweConstraint                   = MediaConstraintKey("googImprovedWifiBwe")
    ScreencastMinBitrateConstraint              = MediaConstraintKey("googScreencastMinBitrate")
    SkipEncodingUnusedStreamsConstraint         = MediaConstraintKey("googSkipEncodingUnusedStreams")
    CpuOveruseDetectionConstraint               = MediaConstraintKey("googCpuOveruseDetection")
    CpuUnderuseThresholdConstraint              = MediaConstraintKey("googCpuUnderuseThreshold")
    CpuOveruseThresholdConstraint               = MediaConstraintKey("googCpuOveruseThreshold")
    CpuOveruseEncodeUsageConstraint             = MediaConstraintKey("googCpuOveruseEncodeUsage")
    HighStartBitrateConstraint                  = MediaConstraintKey("googHighStartBitrate")
    HighBitrateConstraint                       = MediaConstraintKey("googHighBitrate")
    VeryHighBitrateConstraint                   = MediaConstraintKey("googVeryHighBitrate")
)