# face.sysprop
# module becomes static class (Java) / namespace (C++) for serving API
module: "android.face.virt.FaceHalProperties"
owner: Vendor

# type of face sensor
prop {
    prop_name: "persist.vendor.face.virtual.type"
    type: String
    scope: Public
    access: ReadWrite
    enum_values: "IR|RGB"
    api_name: "type"
}

# the strength of the sensor
prop {
    prop_name: "persist.vendor.face.virtual.strength"
    type: String
    scope: Public
    access: ReadWrite
    enum_values: "convenience|weak|strong"
    api_name: "strength"
}

# ids of current enrollments
prop {
    prop_name: "persist.vendor.face.virtual.enrollments"
    type: IntegerList
    scope: Public
    access: ReadWrite
    api_name: "enrollments"
}

# List of features
prop {
    prop_name: "persist.vendor.face.virtual.features"
    type: IntegerList
    scope: Public
    access: ReadWrite
    api_name: "features"
}

# authenticate and detectInteraction will succeed with this
# enrollment id, when present, otherwise they will error
prop {
    prop_name: "vendor.face.virtual.enrollment_hit"
    type: Integer
    scope: Public
    access: ReadWrite
    api_name: "enrollment_hit"
}

# The initial latency for enrollment
prop {
    prop_name: "vendor.face.virtual.operation_start_enroll_latency"
    type: Integer
    scope: Public
    access: ReadWrite
    api_name: "operation_start_enroll_latency"
}

# the next enrollment in the format:
# "<id>,<bucket_id>:<delay>:<succeeds>,<bucket_id>..."
# for example: "0:1,0:100:1,1:200:1" indicating that bucket 0 took
# 50 milliseconds, bucket 1 took 100 milliseconds, bucket 2 took 200 milliseconds.
# Note that it is up to the configuration to determine how many buckets are required
# to complete an enrollment
prop {
    prop_name: "vendor.face.virtual.next_enrollment"
    type: String
    scope: Public
    access: ReadWrite
    api_name: "next_enrollment"
}

# value for getAuthenticatorId or 0
prop {
    prop_name: "vendor.face.virtual.authenticator_id"
    type: Long
    scope: Public
    access: ReadWrite
    api_name: "authenticator_id"
}

# value for generateChallenge
prop {
    prop_name: "vendor.face.virtual.challenge"
    type: Long
    scope: Public
    access: ReadWrite
    api_name: "challenge"
}

# if locked out
prop {
    prop_name: "vendor.face.virtual.lockout"
    type: Boolean
    scope: Public
    access: ReadWrite
    api_name: "lockout"
}

# force all authenticate operations to fail
prop {
    prop_name: "vendor.face.virtual.operation_authenticate_fails"
    type: Boolean
    scope: Public
    access: ReadWrite
    api_name: "operation_authenticate_fails"
}

# force all detectInteraction operations to fail
prop {
    prop_name: "vendor.face.virtual.operation_detect_interaction_fails"
    type: Boolean
    scope: Public
    access: ReadWrite
    api_name: "operation_detect_interaction_fails"
}

# force all enroll operations to fail
prop {
    prop_name: "vendor.face.virtual.operation_enroll_fails"
    type: Boolean
    scope: Public
    access: ReadWrite
    api_name: "operation_enroll_fails"
}

# add a latency to authentication operations
# Note that this latency is the initial authentication latency that occurs before
# the HAL will send AcquiredInfo::START and AcquiredInfo::FIRST_FRAME_RECEIVED
prop {
    prop_name: "vendor.face.virtual.operation_authenticate_latency"
    type: Integer
    scope: Public
    access: ReadWrite
    api_name: "operation_authenticate_latency"
}

# add a latency to detectInteraction operations
prop {
    prop_name: "vendor.face.virtual.operation_detect_interaction_latency"
    type: Integer
    scope: Public
    access: ReadWrite
    api_name: "operation_detect_interaction_latency"
}

# millisecond duration for authenticate operations
# (waits for changes to enrollment_hit)
prop {
    prop_name: "vendor.face.virtual.operation_authenticate_duration"
    type: Integer
    scope: Public
    access: ReadWrite
    api_name: "operation_authenticate_duration"
}