// Copyright (C) 2018 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Note that if you add/remove methods in this file you must update
// the metrics sql as well ./android/scripts/gen-grpc-sql.py
//
// Please group deleted methods in a block including the date (MM/DD/YY)
// it was removed. This enables us to easily keep metrics around after removal
//
// List of deleted methods
// rpc iWasDeleted (03/12/12)
// ...
syntax = "proto3";

option java_multiple_files = true;
option java_package = "com.android.emulator.control";
option objc_class_prefix = "AEC";

package android.emulation.control;
import "google/protobuf/empty.proto";

// An EmulatorController service lets you control the emulator.
// Note that this is currently an experimental feature, and that the
// service definition might change without notice. Use at your own risk!
//
// We use the following rough conventions:
//
// streamXXX --> streams values XXX (usually for emulator lifetime). Values
//               are updated as soon as they become available.
// getXXX    --> gets a single value XXX
// setXXX    --> sets a single value XXX, does not returning state, these
//               usually have an observable lasting side effect.
// sendXXX   --> send a single event XXX, possibly returning state information.
//               android usually responds to these events.
service EmulatorController {
    // set/get/stream the sensor data
    rpc streamSensor(SensorValue) returns (stream SensorValue) {}
    rpc getSensor(SensorValue) returns (SensorValue) {}
    rpc setSensor(SensorValue) returns (google.protobuf.Empty) {}

    // set/get/stream the physical model, this is likely the one you are
    // looking for when you wish to modify the device state.
    rpc setPhysicalModel(PhysicalModelValue) returns (google.protobuf.Empty) {}
    rpc getPhysicalModel(PhysicalModelValue) returns (PhysicalModelValue) {}
    rpc streamPhysicalModel(PhysicalModelValue)
            returns (stream PhysicalModelValue) {}

    // Atomically set/get the current primary clipboard data.
    rpc setClipboard(ClipData) returns (google.protobuf.Empty) {}
    rpc getClipboard(google.protobuf.Empty) returns (ClipData) {}

    // Streams the current data on the clipboard. This will immediately produce
    // a result with the current state of the clipboard after which the stream
    // will block and wait until a new clip event is available from the guest.
    // Calling the setClipboard method above will not result in generating a
    // clip event. It is possible to lose clipboard events if the clipboard
    // updates very rapidly.
    rpc streamClipboard(google.protobuf.Empty) returns (stream ClipData) {}

    // Set/get the battery to the given state.
    rpc setBattery(BatteryState) returns (google.protobuf.Empty) {}
    rpc getBattery(google.protobuf.Empty) returns (BatteryState) {}

    // Set the state of the gps.
    // Note: Setting the gps position will not be reflected in the user interface.
    // Keep in mind that android usually only samples the gps at 1 hz.
    rpc setGps(GpsState) returns (google.protobuf.Empty) {}

    // Gets the latest gps state as delivered by the setGps call, or location ui
    // if active.
    //
    // Note: this is not necessarily the actual gps coordinate visible at the
    // time, due to gps sample frequency (usually 1hz).
    rpc getGps(google.protobuf.Empty) returns (GpsState) {}

    // Simulate a touch event on the finger print sensor.
    rpc sendFingerprint(Fingerprint) returns (google.protobuf.Empty) {}

    // Send a keyboard event. Translating the event.
    rpc sendKey(KeyboardEvent) returns (google.protobuf.Empty) {}

    // Send touch/mouse events. Note that mouse events can be simulated
    // by touch events.
    rpc sendTouch(TouchEvent) returns (google.protobuf.Empty) {}
    rpc sendMouse(MouseEvent) returns (google.protobuf.Empty) {}
    rpc injectWheel(stream WheelEvent) returns (google.protobuf.Empty) {}

    // Make a phone call.
    rpc sendPhone(PhoneCall) returns (PhoneResponse) {}

    // Sends an sms message to the emulator.
    rpc sendSms(SmsMessage) returns (PhoneResponse) {}

    // Retrieve the status of the emulator. This will contain general
    // hardware information, and whether the device has booted or not.
    rpc getStatus(google.protobuf.Empty) returns (EmulatorStatus) {}

    // Gets an individual screenshot in the desired format.
    //
    // The image will be scaled to the desired ImageFormat, while maintaining
    // the aspect ratio. The returned image will never exceed resolution of the
    // device display. Not setting the width or height (i.e. they are 0) will
    // result in using the display width and height.
    //
    // The resulting image will be properly oriented and can be displayed
    // directly without post processing. For example, if the device has a
    // 1080x1920 screen and is in landscape mode and called with no width or
    // height parameter, it will return a 1920x1080 image.
    //
    // The dimensions of the returned image will never exceed the corresponding
    // display dimensions. For example, this method will return a 1920x1080
    // screenshot, if the display resolution is 1080x1920 and a screenshot of
    // 2048x2048 is requested when the device is in landscape mode.
    //
    // This method will return an empty image if the display is not visible.
    rpc getScreenshot(ImageFormat) returns (Image) {}

    // Streams a series of screenshots in the desired format.
    //
    // A new frame will be delivered whenever the device produces a new frame.
    // Beware that this can produce a significant amount of data and that
    // certain translations can be very costly. For example, streaming a series
    // of png images is very cpu intensive.
    //
    // Images are produced according to the getScreenshot API described above.
    //
    // If the display is inactive, or becomes inactive, an empty image will be
    // delivered. Images will be delived again if the display becomes active and
    // new frames are produced.
    rpc streamScreenshot(ImageFormat) returns (stream Image) {}

    // Streams a series of audio packets in the desired format.
    // A new frame will be delivered whenever the emulated device
    // produces a new audio frame. You can expect packets to be
    // delivered in intervals of 20-30ms.
    //
    // Be aware that this can block when the emulator does not
    // produce any audio whatsoever!
    rpc streamAudio(AudioFormat) returns (stream AudioPacket) {}

    // Injects a series of audio packets to the android microphone.
    // A new frame will be delivered whenever the emulated device
    // requests a new audio frame. Audio is usually delivered at a rate
    // that the emulator is requesting frames. Audio will be stored in a
    // temporary buffer that can hold 300ms of audio.
    //
    // Notes:
    //  - Only the first audio format packet that is delivered will be
    // honored. There is no need to send the audio format multiple times.
    //  - Real time audio currently immediately overrides the buffer. This
    // means you must provide a constant rate of audio packets. The real
    // time mode is experimental. Timestamps of audio packets might be
    // used in the future to improve synchronization.
    //
    // -  INVALID_ARGUMENT (code 3) The sampling rate was too high/low
    // -  INVALID_ARGUMENT (code 3) The audio packet was too large to handle.
    // -  FAILED_PRECONDITION (code 9) If there was a microphone registered
    // already.
    rpc injectAudio(stream AudioPacket) returns (google.protobuf.Empty) {}

    // Returns the last 128Kb of logcat output from the emulator
    // Note that parsed logcat messages are only available after L (Api >23).
    // it is possible that the logcat buffer gets overwritten, or falls behind.
    rpc getLogcat(LogMessage) returns (LogMessage) {}

    // Streams the logcat output from the emulator. The first call
    // can retrieve up to 128Kb. This call will not return.
    // Note that parsed logcat messages are only available after L (Api >23)
    // it is possible that the logcat buffer gets overwritten, or falls behind.
    rpc streamLogcat(LogMessage) returns (stream LogMessage) {}

    // Transition the virtual machine to the desired state. Note that
    // some states are only observable. For example you cannot transition
    // to the error state.
    rpc setVmState(VmRunState) returns (google.protobuf.Empty) {}

    // Gets the state of the virtual machine.
    rpc getVmState(google.protobuf.Empty) returns (VmRunState) {}

    // Atomically changes the current multi-display configuration.
    // After this call the given display configurations will be activated. You
    // can only update secondary displays. Displays with id 0 will be ignored.
    //
    // This call can result in the removal or addition of secondary displays,
    // the final display state can be observed by the returned configuration.
    //
    // The following gRPC error codes can be returned:
    // -  FAILED_PRECONDITION (code 9) if the AVD does not support a
    // configurable
    //    secondary display.
    // -  INVALID_ARGUMENT (code 3) if:
    //     - The same display id is defined multiple times.
    //     - The display configurations are outside valid ranges.
    //       See DisplayConfiguration for details on valid ranges.
    // -  INTERNAL (code 13) if there was an internal emulator failure.
    rpc setDisplayConfigurations(DisplayConfigurations)
            returns (DisplayConfigurations) {}

    // Returns all currently valid logical displays.
    //
    // The gRPC error code FAILED_PRECONDITION (code 9) is returned if the AVD
    // does not support a configurable secondary display.
    rpc getDisplayConfigurations(google.protobuf.Empty)
            returns (DisplayConfigurations) {}

    // Notifies client of the following changes:
    //
    // - Virtual scene camera status change.
    // - Display configuration changes from extended ui. This will only be fired
    //   if the user makes modifications the extended displays through the
    //   extended control tab.
    //
    // Note that this method will send the initial virtual scene state
    // immediately.
    rpc streamNotification(google.protobuf.Empty)
            returns (stream Notification) {}

    // RotationRadian is relative to the camera's current orientation.
    rpc rotateVirtualSceneCamera(RotationRadian)
            returns (google.protobuf.Empty) {}
    // Velocity is absolute
    rpc setVirtualSceneCameraVelocity(Velocity)
            returns (google.protobuf.Empty) {}
    // Set foldable posture
    rpc setPosture(Posture) returns (google.protobuf.Empty) {}

    // Get the backlight brightness.
    // The following gRPC error codes can be returned:
    // -  FAILED_PRECONDITION (code 9) if the AVD does not support hw-control.
    rpc getBrightness(BrightnessValue) returns (BrightnessValue) {}

    // Set the backlight brightness.
    // The following gRPC error codes can be returned:
    // -  FAILED_PRECONDITION (code 9) if the AVD does not support hw-control.
    // -  INVALID_ARGUMENT (code 3) The brightness exceeds the valid range.
    rpc setBrightness(BrightnessValue) returns (google.protobuf.Empty) {}

    // Returns the current mode of the primary display of a resizable AVD.
    // The following gRPC error codes can be returned:
    // -  FAILED_PRECONDITION (code 9) if the AVD is not resizable.
    rpc getDisplayMode(google.protobuf.Empty) returns (DisplayMode) {}

    // Sets the size of the primary display of a resizable AVD. Fails if the AVD
    // is not resizable. The following gRPC error codes can be returned:
    // -  FAILED_PRECONDITION (code 9) if the AVD is not resizable.
    rpc setDisplayMode(DisplayMode) returns (google.protobuf.Empty) {}
}

// A Run State that describes the state of the Virtual Machine.
message VmRunState {
    enum RunState {
        // The emulator is in an unknown state. You cannot transition to this
        // state.
        UNKNOWN = 0;
        // Guest is actively running. You can transition to this state from the
        // paused state.
        RUNNING = 1;
        // Guest is paused to load a snapshot. You cannot transition to this
        // state.
        RESTORE_VM = 2;
        // Guest has been paused. Transitioning to this state will pause the
        // emulator the guest will not be consuming any cpu cycles.
        PAUSED = 3;
        // Guest is paused to take or export a snapshot. You cannot
        // transition to this state.
        SAVE_VM = 4;
        // System shutdown, note that it is similar to power off. It tries to
        // set the system status and notify guest. The system is likely going to
        // disappear soon and do proper cleanup of resources, possibly taking
        // a snapshot. This is the same behavior as closing the emulator by
        // clicking the X (close) in the user interface.
        SHUTDOWN = 5;
        // Immediately terminate the emulator. No resource cleanup will take
        // place. There is a good change to corrupt the system.
        TERMINATE = 7;
        // Will cause the emulator to reset. This is not a state you can
        // observe.
        RESET = 9;
        // Guest experienced some error state, you cannot transition to this
        // state.
        INTERNAL_ERROR = 10;
    }

    RunState state = 1;
}

message ParameterValue {
    repeated float data = 1 [packed = true];
}

message PhysicalModelValue {
    enum State {
        OK = 0;
        NO_SERVICE = -3;  // qemud service is not available/initiated.
        DISABLED = -2;    // Sensor is disabled.
        UNKNOWN = -1;     // Unknown sensor (should not happen)
    }

    // Details on the sensors documentation can be found here:
    // https://developer.android.com/reference/android/hardware/Sensor.html#TYPE_
    // The types must follow the order defined in
    // "external/qemu/android/hw-sensors.h"
    enum PhysicalType {
        POSITION = 0;

        // All values are angles in degrees.
        // values = [x,y,z]
        ROTATION = 1;

        MAGNETIC_FIELD = 2;

        // Temperature in °C
        TEMPERATURE = 3;

        // Proximity sensor distance measured in centimeters
        PROXIMITY = 4;

        // Ambient light level in SI lux units
        LIGHT = 5;

        // Atmospheric pressure in hPa (millibar)
        PRESSURE = 6;

        // Relative ambient air humidity in percent
        HUMIDITY = 7;

        VELOCITY = 8;
        AMBIENT_MOTION = 9;

        // Describing a hinge angle sensor in degrees.
        HINGE_ANGLE0 = 10;
        HINGE_ANGLE1 = 11;
        HINGE_ANGLE2 = 12;

        ROLLABLE0 = 13;
        ROLLABLE1 = 14;
        ROLLABLE2 = 15;

        // Describing the device posture; the value should be an enum defined
        // in Posture::PostureValue.
        POSTURE = 16;

        // Heart rate in bpm
        HEART_RATE = 17;

        // Ambient RGBC light intensity. Values are in order (Red, Green, Blue,
        // Clear).
        RGBC_LIGHT = 18;

        // Wrist tilt gesture (1 = gaze, 0 = ungaze)
        WRIST_TILT = 19;
    }
    PhysicalType target = 1;

    // [Output Only]
    State status = 2;

    // Value interpretation depends on sensor.
    ParameterValue value = 3;
}

// A single sensor value.
message SensorValue {
    enum State {
        OK = 0;
        NO_SERVICE = -3;  // qemud service is not available/initiated.
        DISABLED = -2;    // Sensor is disabled.
        UNKNOWN = -1;     // Unknown sensor (should not happen)
    }

    // These are the various sensors that can be available in an emulated
    // devices.
    enum SensorType {
        // Measures the acceleration force in m/s2 that is applied to a device
        // on all three physical axes (x, y, and z), including the force of
        // gravity.
        ACCELERATION = 0;
        // Measures a device's rate of rotation in rad/s around each of the
        // three physical axes (x, y, and z).
        GYROSCOPE = 1;
        // Measures the ambient geomagnetic field for all three physical axes
        // (x, y, z) in μT.
        MAGNETIC_FIELD = 2;
        // Measures degrees of rotation that a device makes around all three
        // physical axes (x, y, z)
        ORIENTATION = 3;
        // Measures the temperature of the device in degrees Celsius (°C).
        TEMPERATURE = 4;
        // Measures the proximity of an object in cm relative to the view screen
        // of a device. This sensor is typically used to determine whether a
        // handset is being held up to a person's ear.
        PROXIMITY = 5;
        // Measures the ambient light level (illumination) in lx.
        LIGHT = 6;
        // Measures the ambient air pressure in hPa or mbar.
        PRESSURE = 7;
        // Measures the relative ambient humidity in percent (%).
        HUMIDITY = 8;
        MAGNETIC_FIELD_UNCALIBRATED = 9;
        GYROSCOPE_UNCALIBRATED = 10;

        // HINGE_ANGLE0 (11), HINGE_ANGLE1 (12), HINGE_ANGLE2 (13) are
        // skipped; clients should use get/setPhysicalModel() instead for these
        // "sensors".

        // Measures the heart rate in bpm.
        HEART_RATE = 14;
        // Measures the ambient RGBC light intensity.
        // Values are in order (Red, Green, Blue, Clear).
        RGBC_LIGHT = 15;
        // WIRST_TILT (16) is skipped; clients should use get/setPhysicalModel()
        // instead.
        // Measures acceleration force and provides bias data.
        ACCELERATION_UNCALIBRATED = 17;
    }

    // Type of sensor
    SensorType target = 1;

    // [Output Only]
    State status = 2;

    // Value interpretation depends on sensor enum.
    ParameterValue value = 3;
}

// A single backlight brightness value.
message BrightnessValue {
    enum LightType {
        // Display backlight. This will affect all displays.
        LCD = 0;
        KEYBOARD = 1;
        BUTTON = 2;
    }

    // Type of light
    LightType target = 1;

    // Light intensity, ranges from 0-255.
    uint32 value = 2;
}

// in line with android/emulation/resizable_display_config.h
enum DisplayModeValue {
    PHONE = 0;
    FOLDABLE = 1;
    TABLET = 2;
    DESKTOP = 3;
}

message DisplayMode {
    DisplayModeValue value = 1;
}

message LogMessage {
    // [Output Only] The contents of the log output.
    string contents = 1;
    // The starting byte position of the output that was returned. This
    // should match the start parameter sent with the request. If the serial
    // console output exceeds the size of the buffer, older output will be
    // overwritten by newer content and the start values will be mismatched.
    int64 start = 2;
    //[Output Only] The position of the next byte of content from the serial
    // console output. Use this value in the next request as the start
    // parameter.
    int64 next = 3;

    // Set the sort of response you are interested it in.
    // It the type is "Parsed" the entries field will contain the parsed
    // results. otherwise the contents field will be set.
    LogType sort = 4;

    // [Output Only] The parsed logcat entries so far. Only set if sort is
    // set to Parsed
    repeated LogcatEntry entries = 5;

    enum LogType {
        Text = 0;
        Parsed = 1;
    }
}

// A parsed logcat entry.
message LogcatEntry {
    // The possible log levels.
    enum LogLevel {
        UNKNOWN = 0;
        DEFAULT = 1;
        VERBOSE = 2;
        DEBUG = 3;
        INFO = 4;
        WARN = 5;
        ERR = 6;
        FATAL = 7;
        SILENT = 8;
    }

    // A Unix timestamps in  milliseconds (The number of milliseconds that
    // have elapsed since January 1, 1970 (midnight UTC/GMT), not counting
    // leap seconds)
    uint64 timestamp = 1;

    // Process id.
    uint32 pid = 2;

    // Thread id.
    uint32 tid = 3;
    LogLevel level = 4;
    string tag = 5;
    string msg = 6;
}

// Information about the hypervisor that is currently in use.
message VmConfiguration {
    enum VmHypervisorType {
        // An unknown hypervisor
        UNKNOWN = 0;

        // No hypervisor is in use. This usually means that the guest is
        // running on a different CPU than the host, or you are using a
        // platform where no hypervisor is available.
        NONE = 1;

        // The Kernel based Virtual Machine
        // (https://www.linux-kvm.org/page/Main_Page)
        KVM = 2;

        // Intel® Hardware Accelerated Execution Manager (Intel® HAXM)
        // https://github.com/intel/haxm
        HAXM = 3;

        // Hypervisor Framework.
        // https://developer.apple.com/documentation/hypervisor
        HVF = 4;

        // Window Hypervisor Platform
        // https://docs.microsoft.com/en-us/virtualization/api/
        WHPX = 5;

        GVM = 6;
    }

    VmHypervisorType hypervisorType = 1;
    int32 numberOfCpuCores = 2;
    int64 ramSizeBytes = 3;
}

// Representation of a clipped data object on the clipboard.
message ClipData {
    // UTF-8 Encoded text.
    string text = 1;
}

// The Touch interface represents a single contact point on a
// touch-sensitive device. The contact point is commonly a finger or stylus
// and the device may be a touchscreen or trackpad.
message Touch {
    // The horizontal coordinate. This is the physical location on the
    // screen For example 0 indicates the leftmost coordinate.
    int32 x = 1;

    // The vertical coordinate. This is the physical location on the screen
    // For example 0 indicates the top left coordinate.
    int32 y = 2;

    // The identifier is an arbitrary non-negative integer that is used to
    // identify and track each tool independently when multiple tools are
    // active. For example, when multiple fingers are touching the device,
    // each finger should be assigned a distinct tracking id that is used as
    // long as the finger remains in contact. Tracking ids may be reused
    // when their associated tools move out of range.
    //
    // The emulator currently supports up to 10 concurrent touch events. The
    // identifier can be any uninque value and will be mapped to the next
    // available internal identifier.
    int32 identifier = 3;

    // Reports the physical pressure applied to the tip of the tool or the
    // signal strength of the touch contact.
    //
    // The values reported must be non-zero when the tool is touching the
    // device and zero otherwise to indicate that the touch event is
    // completed.
    //
    // Make sure to deliver a pressure of 0 for the given identifier when
    // the touch event is completed, otherwise the touch identifier will not
    // be unregistered!
    int32 pressure = 4;

    // Optionally reports the cross-sectional area of the touch contact, or
    // the length of the longer dimension of the touch contact.
    int32 touch_major = 5;

    // Optionally reports the length of the shorter dimension of the touch
    // contact. This axis will be ignored if touch_major is reporting an
    // area measurement greater than 0.
    int32 touch_minor = 6;

    enum EventExpiration {
        // The system will use the default time of 120s to track
        // the touch event with the given identifier. If no update happens
        // within this timeframe the identifier is considered expired
        // and can be made available for re-use. This means that a touch event
        // with pressure 0 for this identifier will be send to the emulator.
        EVENT_EXPIRATION_UNSPECIFIED = 0;

        // Never expire the given slot. You must *ALWAYS* close the identifier
        // by sending a touch event with 0 pressure.
        NEVER_EXPIRE = 1;
    }

    EventExpiration expiration = 7;
}

// A TouchEvent contains a list of Touch objects that are in contact with
// the touch surface.
//
// Touch events are delivered in sequence as specified in the touchList.
//
// TouchEvents are delivered to the emulated devices using ["Protocol
// B"](https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt)
message TouchEvent {
    // The list of Touch objects, note that these do not need to be unique
    repeated Touch touches = 1;

    // The display device where the touch event occurred.
    // Omitting or using the value 0 indicates the main display.
    //
    // Touch events cannot be send to displays other than 0, due to
    // https://issuetracker.google.com/issues/150699691
    int32 display = 2;
}

// The MouseEvent interface represents events that occur due to the user
// interacting with a pointing device (such as a mouse).
message MouseEvent {
    // The horizontal coordinate. This is the physical location on the
    // screen For example 0 indicates the leftmost coordinate.
    int32 x = 1;

    // The vertical coordinate. This is the physical location on the screen
    // For example 0 indicates the top left coordinate.
    int32 y = 2;

    // Indicates which buttons are pressed.
    // 0: No button was pressed
    // 1: Primary button (left)
    // 2: Secondary button (right)
    int32 buttons = 3;

    // The display device where the mouse event occurred.
    // Omitting or using the value 0 indicates the main display.
    int32 display = 4;
}

message WheelEvent {
  // The value indicating how much the mouse wheel is rotated. Scaled so that
  // 120 equals to 1 wheel click. (120 is chosen as a multiplier often used to
  // represent wheel movements less than 1 wheel click. e.g.
  // https://doc.qt.io/qt-5/qwheelevent.html#angleDelta) Positive delta value
  // is assigned to dx when the top of wheel is moved to left. Similarly
  // positive delta value is assigned to dy when the top of wheel is moved
  // away from the user.
  int32 dx = 1;
  int32 dy = 2;

  // The display device where the mouse event occurred.
  // Omitting or using the value 0 indicates the main display.
  int32 display = 3;
}

// KeyboardEvent objects describe a user interaction with the keyboard; each
// event describes a single interaction between the user and a key (or
// combination of a key with modifier keys) on the keyboard.
// This follows the pattern as set by
// (javascript)[https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent]
//
// Note: that only keyCode, key, or text can be set and that the semantics
// will slightly vary.
message KeyboardEvent {
    // Code types that the emulator can receive. Note that the emulator
    // will do its best to translate the code to an evdev value that
    // will be send to the emulator. This translation is based on
    // the chromium translation tables. See
    // (this)[https://android.googlesource.com/platform/external/qemu/+/refs/heads/emu-master-dev/android/android-grpc/android/emulation/control/keyboard/keycode_converter_data.inc]
    // for details on the translation.
    enum KeyCodeType {
        Usb = 0;
        Evdev = 1;
        XKB = 2;
        Win = 3;
        Mac = 4;
    }

    enum KeyEventType {
        // Indicates that this keyevent should be send to the emulator
        // as a key down event. Meaning that the key event will be
        // translated to an EvDev event type and bit 11 (0x400) will be
        // set before it is sent to the emulator.
        keydown = 0;

        // Indicates that the keyevent should be send to the emulator
        // as a key up event. Meaning that the key event will be
        // translated to an EvDev event type and
        // sent to the emulator.
        keyup = 1;

        // Indicates that the keyevent will be send to the emulator
        // as e key down event and immediately followed by a keyup event.
        keypress = 2;
    }

    // Type of keycode contained in the keyCode field.
    KeyCodeType codeType = 1;

    // The type of keyboard event that should be sent to the emulator
    KeyEventType eventType = 2;

    // This property represents a physical key on the keyboard (as opposed
    // to the character generated by pressing the key). In other words, this
    // property is a value which isn't altered by keyboard layout or the
    // state of the modifier keys. This value will be interpreted by the
    // emulator depending on the KeyCodeType. The incoming key code will be
    // translated to an evdev code type and send to the emulator.
    // The values in key and text will be ignored.
    int32 keyCode = 3;

    // The value of the key pressed by the user, taking into consideration
    // the state of modifier keys such as Shift as well as the keyboard
    // locale and layout. This follows the w3c standard used in browsers.
    // You can find an accurate description of valid values
    // [here](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values)
    //
    // Note that some keys can result in multiple evdev events that are
    // delivered to the emulator. for example the Key "A" will result in a
    // sequence:
    // ["Shift", "a"] -> [0x2a, 0x1e] whereas "a" results in ["a"] -> [0x1e].
    //
    // Not all documented keys are understood by android, and only printable
    // ASCII [32-127) characters are properly translated.
    //
    // Keep in mind that there are a set of key values that result in android
    // specific behavior
    // [see](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values#Phone_keys):
    //
    // - "AppSwitch": Behaves as the "Overview" button in android.
    // - "GoBack": The Back button.
    // - "GoHome": The Home button, which takes the user to the phone's main
    //             screen (usually an application launcher).
    // - "Power":  The Power button.
    string key = 4;

    // Series of utf8 encoded characters to send to the emulator. An attempt
    // will be made to translate every character will an EvDev event type and
    // send to the emulator as a keypress event. The values in keyCode,
    // eventType, codeType and key will be ignored.
    //
    // Note that most printable ASCII characters (range [32-127) can be send
    // individually with the "key" param. Do not expect arbitrary UTF symbols to
    // arrive in the emulator (most will be ignored).
    //
    // Note that it is possible to overrun the keyboard buffer by slamming this
    // endpoint with large quantities of text (>1kb). The clipboard api is
    // better suited for transferring large quantities of text.
    string text = 5;
}

message Fingerprint {
    // True when the fingprint is touched.
    bool isTouching = 1;

    // The identifier of the registered fingerprint.
    int32 touchId = 2;
}

message GpsState {
    // Setting this to false will disable auto updating  from the LocationUI,
    // otherwise the location UI will override the location at a frequency of
    // 1hz.
    //
    // - This is unused if the emulator is launched with -no-window, or when he
    //   location ui is disabled.
    // - This will BREAK the location ui experience if it is set to false. For
    //    example routing will no longer function.
    bool passiveUpdate = 1;

    // The latitude, in degrees.
    double latitude = 2;

    // The longitude, in degrees.
    double longitude = 3;

    // The speed if it is available, in meters/second over ground
    double speed = 4;

    // gets the horizontal direction of travel of this device, and is not
    // related to the device orientation. It is guaranteed to be in the
    // range [0.0, 360.0] if the device has a bearing. 0=North, 90=East,
    // 180=South, etc..
    double bearing = 5;

    // The altitude if available, in meters above the WGS 84 reference
    // ellipsoid.
    double altitude = 6;

    // The number of satellites used to derive the fix
    int32 satellites = 7;
}

message BatteryState {
    enum BatteryStatus {
        UNKNOWN = 0;
        CHARGING = 1;
        DISCHARGING = 2;
        NOT_CHARGING = 3;
        FULL = 4;
    }

    enum BatteryCharger {
        NONE = 0;
        AC = 1;
        USB = 2;
        WIRELESS = 3;
    }

    enum BatteryHealth {
        GOOD = 0;
        FAILED = 1;
        DEAD = 2;
        OVERVOLTAGE = 3;
        OVERHEATED = 4;
    }

    bool hasBattery = 1;
    bool isPresent = 2;
    BatteryCharger charger = 3;
    int32 chargeLevel = 4;
    BatteryHealth health = 5;
    BatteryStatus status = 6;
}

// An ImageTransport allows for specifying a side channel for
// delivering image frames versus using the standard bytes array that is
// returned with the gRPC request.
message ImageTransport {
    enum TransportChannel {
        // Return full frames over the gRPC transport
        TRANSPORT_CHANNEL_UNSPECIFIED = 0;

        // Write images to the a file/shared memory handle.
        MMAP = 1;
    }

    // The desired transport channel used for delivering image frames. Only
    // relevant when streaming screenshots.
    TransportChannel channel = 1;

    // Handle used for writing image frames if transport is mmap. The client
    // sets and owns this handle. It can be either a shm region, or a mmap. A
    // mmap should be a url that starts with `file:///` Note: the mmap can
    // result in tearing.
    string handle = 2;
}

// The aspect ratio (width/height) will be different from the one
// where the device is unfolded.
message FoldedDisplay {
    uint32 width = 1;
    uint32 height = 2;
    // It is possible for the screen to be folded in different ways depending
    // on which surface is shown to the user. So xOffset and yOffset indicate
    // the top left corner of the folded screen within the original unfolded
    // screen.
    uint32 xOffset = 3;
    uint32 yOffset = 4;
}

message ImageFormat {
    enum ImgFormat {
        // Portable Network Graphics format
        // (https://en.wikipedia.org/wiki/Portable_Network_Graphics)
        PNG = 0;

        // Three-channel RGB color model supplemented with a fourth alpha
        // channel. https://en.wikipedia.org/wiki/RGBA_color_model
        // Each pixel consists of 4 bytes.
        RGBA8888 = 1;

        // Three-channel RGB color model, each pixel consists of 3 bytes
        RGB888 = 2;
    }

    // The (desired) format of the resulting bytes.
    ImgFormat format = 1;

    // [Output Only] The rotation of the image. The image will be rotated
    // based upon the coarse grained orientation of the device.
    Rotation rotation = 2;

    // The (desired) width of the image. When passed as input
    // the image will be scaled to match the given
    // width, while maintaining the aspect ratio of the device.
    // The returned image will never exceed the given width, but can be less.
    // Omitting this value (or passing in 0) will result in no scaling,
    // and the width of the actual device will be used.
    uint32 width = 3;

    // The (desired) height of the image.  When passed as input
    // the image will be scaled to match the given
    // height, while maintaining the aspect ratio of the device.
    // The returned image will never exceed the given height, but can be less.
    // Omitting this value (or passing in 0) will result in no scaling,
    // and the height of the actual device will be used.
    uint32 height = 4;

    // The (desired) display id of the device. Setting this to 0 (or omitting)
    // indicates the main display.
    uint32 display = 5;

    // Set this if you wish to use a different transport channel to deliver
    // image frames.
    ImageTransport transport = 6;

    // [Output Only] Display configuration when screen is folded. The value is
    // the original configuration before scaling.
    FoldedDisplay foldedDisplay = 7;

    // [Output Only] Display mode when AVD is resizable.
    DisplayModeValue displayMode = 8;
}

message Image {
    ImageFormat format = 1;

    uint32 width = 2 [deprecated = true];   // width is contained in format.
    uint32 height = 3 [deprecated = true];  // height is contained in format.

    // The organization of the pixels in the image buffer is from left to
    // right and bottom up. This will be empty if an alternative image transport
    // is requested in the image format. In that case the side channel should
    // be used to obtain the image data.
    bytes image = 4;

    // [Output Only] Monotonically increasing sequence number in a stream of
    // screenshots. The first screenshot will have a sequence of 0. A single
    // screenshot will always have a sequence number of 0. The sequence is not
    // necessarily contiguous, and can be used to detect how many frames were
    // dropped. An example sequence could be: [0, 3, 5, 7, 9, 11].
    uint32 seq = 5;

    // [Output Only] Unix timestamp in microseconds when the emulator estimates
    // the frame was generated. The timestamp is before the actual frame is
    // copied and transformed. This can be used to calculate variance between
    // frame production time, and frame depiction time.
    uint64 timestampUs = 6;
}

message Rotation {
    enum SkinRotation {
        PORTRAIT = 0;           // 0 degrees
        LANDSCAPE = 1;          // 90 degrees
        REVERSE_PORTRAIT = 2;   // -180 degrees
        REVERSE_LANDSCAPE = 3;  // -90 degrees
    }

    // The rotation of the device, derived from the sensor state
    // of the emulator. The derivation reflects how android observes
    // the rotation state.
    SkinRotation rotation = 1;

    // Specifies the angle of rotation, in degrees [-180, 180]
    double xAxis = 2;
    double yAxis = 3;
    double zAxis = 4;
}

message PhoneCall {
    enum Operation {
        InitCall = 0;
        AcceptCall = 1;
        RejectCallExplicit = 2;
        RejectCallBusy = 3;
        DisconnectCall = 4;
        PlaceCallOnHold = 5;
        TakeCallOffHold = 6;
    }
    Operation operation = 1;
    string number = 2;
}

message PhoneResponse {
    enum Response {
        OK = 0;
        BadOperation = 1;   // Enum out of range
        BadNumber = 2;      // Mal-formed telephone number
        InvalidAction = 3;  // E.g., disconnect when no call is in progress
        ActionFailed = 4;   // Internal error
        RadioOff = 5;       // Radio power off
    }
    Response response = 1;
}

message Entry {
    string key = 1;
    string value = 2;
}

message EntryList {
    repeated Entry entry = 1;
}

message EmulatorStatus {
    // The emulator version string.
    string version = 1;

    // The time the emulator has been active in .ms
    uint64 uptime = 2;

    // True if the device has completed booting.
    // For P and later this information will accurate,
    // for older images we rely on adb.
    bool booted = 3;

    // The current vm configuration
    VmConfiguration vmConfig = 4;

    // The hardware configuration of the running emulator as
    // key valure pairs.
    EntryList hardwareConfig = 5;
}

message AudioFormat {
    enum SampleFormat {
        AUD_FMT_U8 = 0;   // Unsigned 8 bit
        AUD_FMT_S16 = 1;  // Signed 16 bit (little endian)
    }

    enum Channels {
        Mono = 0;
        Stereo = 1;
    }

    enum DeliveryMode {
        // The audio queue will block and wait until the emulator requests
        // packets. The client does not have to throttle and can push packets at
        // will. This can result in the client falling behind.
        MODE_UNSPECIFIED = 0;
        // Audio packets will be delivered in real time (when possible). The
        // audio queue will be overwritten with incoming data if data is made
        // available. This means the client needs to control timing properly, or
        // packets will get overwritten.
        MODE_REAL_TIME = 1;  //
    }
    // Sampling rate to use, defaulting to 44100 if this is not set.
    // Note, that android devices typically will not use a sampling
    // rate higher than 48kHz. See
    // https://developer.android.com/ndk/guides/audio.
    uint64 samplingRate = 1;
    Channels channels = 2;
    SampleFormat format = 3;

    // [Input Only]
    // The mode used when delivering audio packets.
    DeliveryMode mode = 4;
}

message AudioPacket {
    AudioFormat format = 1;

    // Unix epoch in us when this frame was captured.
    uint64 timestamp = 2;

    // Contains a sample in the given audio format.
    bytes audio = 3;
}

message SmsMessage {
    // The source address where this message came from.
    //
    // The address should be a valid GSM-formatted address as specified by
    // 3GPP 23.040 Sec 9.1.2.5.
    //
    // For example: +3106225412 or (650) 555-1221
    string srcAddress = 1;

    // A utf8 encoded text message that should be delivered.
    string text = 2;
}

// A DisplayConfiguration describes a primary or secondary
// display available to the emulator. The screen aspect ratio
// cannot be longer (or wider) than 21:9 (or 9:21). Screen sizes
// larger than 4k will be rejected.
//
// Common configurations (w x h) are:
// - 480p  (480x720)   142 dpi
// - 720p  (720x1280)  213 dpi
// - 1080p (1080x1920) 320 dpi
// - 4K  (2160x3840) 320 dpi
// - 4K  (2160x3840) 640 dpi (upscaled)
//
// The behavior of the virtual display depends on the flags that are provided to
// this method. By default, virtual displays are created to be private,
// non-presentation and unsecure.
message DisplayConfiguration {
    // These are the set of known android flags and their respective values.
    // you can combine the int values to (de)construct the flags field below.
    enum DisplayFlags {
        DISPLAYFLAGS_UNSPECIFIED = 0;

        // When this flag is set, the virtual display is public.
        // A public virtual display behaves just like most any other display
        // that is connected to the system such as an external or wireless
        // display. Applications can open windows on the display and the system
        // may mirror the contents of other displays onto it. see:
        // https://developer.android.com/reference/android/hardware/display/DisplayManager#VIRTUAL_DISPLAY_FLAG_PUBLIC
        VIRTUAL_DISPLAY_FLAG_PUBLIC = 1;

        // When this flag is set, the virtual display is registered as a
        // presentation display in the presentation display category.
        // Applications may automatically project their content to presentation
        // displays to provide richer second screen experiences.
        // https://developer.android.com/reference/android/hardware/display/DisplayManager#VIRTUAL_DISPLAY_FLAG_PRESENTATION
        VIRTUAL_DISPLAY_FLAG_PRESENTATION = 2;

        // When this flag is set, the virtual display is considered secure as
        // defined by the Display#FLAG_SECURE display flag. The caller promises
        // to take reasonable measures, such as over-the-air encryption, to
        // prevent the contents of the display from being intercepted or
        // recorded on a persistent medium.
        // see:
        // https://developer.android.com/reference/android/hardware/display/DisplayManager#VIRTUAL_DISPLAY_FLAG_SECURE
        VIRTUAL_DISPLAY_FLAG_SECURE = 4;

        // This flag is used in conjunction with VIRTUAL_DISPLAY_FLAG_PUBLIC.
        // Ordinarily public virtual displays will automatically mirror the
        // content of the default display if they have no windows of their own.
        // When this flag is specified, the virtual display will only ever show
        // its own content and will be blanked instead if it has no windows. See
        // https://developer.android.com/reference/android/hardware/display/DisplayManager#VIRTUAL_DISPLAY_FLAG_OWN_CONTENT_ONLY
        VIRTUAL_DISPLAY_FLAG_OWN_CONTENT_ONLY = 8;

        // Allows content to be mirrored on private displays when no content is
        // being shown.
        // This flag is mutually exclusive with
        // VIRTUAL_DISPLAY_FLAG_OWN_CONTENT_ONLY. If both flags are specified
        // then the own-content only behavior will be applied.
        // see:
        // https://developer.android.com/reference/android/hardware/display/DisplayManager#VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR)
        VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR = 16;
    }

    // The width of the display, restricted to:
    // 320 * (dpi / 160) <= width
    uint32 width = 1;

    // The heigh of the display, restricted to:
    // * 320 * (dpi / 160) <= height
    uint32 height = 2;

    // The pixel density (dpi).
    // See https://developer.android.com/training/multiscreen/screendensities
    // for details. This value should be in the range [120, ..., 640]
    uint32 dpi = 3;

    // A combination of virtual display flags. These flags can be constructed
    // by combining the DisplayFlags enum described above.
    //
    // The behavior of the virtual display depends on the flags. By default
    // virtual displays are created to be private, non-presentation and
    // unsecure.
    uint32 flags = 4;

    // The id of the display.
    // The primary (default) display has the display ID of 0.
    // A secondary display has a display ID not 0.
    //
    // A display with the id in the range [1, userConfigurable]
    // can be modified. See DisplayConfigurations below for details.
    //
    // The id can be used to get or stream a screenshot.
    uint32 display = 5;
}
// Provides information about all the displays that can be attached
// to the emulator. The emulator will always have at least one display.
//
// The emulator usually has the following display configurations:
// 0:      The default display.
// 1 - 3:  User configurable displays. These can be added/removed.
//         For example the standalone emulator allows you to modify these
//         in the extended controls.
// 6 - 11: Fixed external displays. For example Android Auto uses fixed
//         displays in this range.
message DisplayConfigurations {
    repeated DisplayConfiguration displays = 1;

    // Display configurations with id [1, userConfigurable] are
    // user configurable, that is they can be added, removed or
    // updated.
    uint32 userConfigurable = 2;

    // The maximum number of attached displays this emulator supports.
    // This is the total number of displays that can be attached to
    // the emulator.
    //
    // Note: A display with an id that is larger than userConfigurable cannot
    // be modified.
    uint32 maxDisplays = 3;
}

message Notification {
    enum EventType {
        VIRTUAL_SCENE_CAMERA_INACTIVE = 0;
        VIRTUAL_SCENE_CAMERA_ACTIVE = 1;

        // Fired when an update to a display event has been fired through
        // the extended ui. This does not fire events when the display
        // is changed through the console or gRPC endpoint.
        DISPLAY_CONFIGURATIONS_CHANGED_UI = 2;
        // Keep adding more for other event types
    }

    EventType event = 1;
}

message RotationRadian {
    float x = 1;  // x axis is horizontal and orthogonal to the view direction.
    float y = 2;  // y axis points up and is perpendicular to the floor.
    float z = 3;  // z axis is the view direction and is set to 0.0 in
                  // rotateVirtualSceneCamera call.
}

message Velocity {
    float x = 1;  // x axis is horizontal and orthogonal to the view direction.
    float y = 2;  // y axis points up and is perpendicular to the floor.
    float z = 3;  // z axis is the view direction
}

// must follow the definition in "external/qemu/android/hw-sensors.h"
message Posture {
    enum PostureValue {
        POSTURE_UNKNOWN = 0;
        POSTURE_CLOSED = 1;
        POSTURE_HALF_OPENED = 2;
        POSTURE_OPENED = 3;
        POSTURE_FLIPPED = 4;
        POSTURE_TENT = 5;
        POSTURE_MAX = 6;
    }
    PostureValue value = 3;
}