/*
 * Copyright (C) 2015 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.
 */

syntax = "proto2";
option optimize_for = LITE_RUNTIME;

package emulator;

// CMD messages are from workstation --> VHAL
// RESP messages are from VHAL --> workstation
enum MsgType {
    GET_CONFIG_CMD                      = 0;
    GET_CONFIG_RESP                     = 1;
    GET_CONFIG_ALL_CMD                  = 2;
    GET_CONFIG_ALL_RESP                 = 3;
    GET_PROPERTY_CMD                    = 4;
    GET_PROPERTY_RESP                   = 5;
    GET_PROPERTY_ALL_CMD                = 6;
    GET_PROPERTY_ALL_RESP               = 7;
    SET_PROPERTY_CMD                    = 8;
    SET_PROPERTY_RESP                   = 9;
    SET_PROPERTY_ASYNC                  = 10;
}
enum Status {
    RESULT_OK                           = 0;
    ERROR_UNKNOWN                       = 1;
    ERROR_UNIMPLEMENTED_CMD             = 2;
    ERROR_INVALID_PROPERTY              = 3;
    ERROR_INVALID_AREA_ID               = 4;
    ERROR_PROPERTY_UNINITIALIZED        = 5;
    ERROR_WRITE_ONLY_PROPERTY           = 6;
    ERROR_MEMORY_ALLOC_FAILED           = 7;
    ERROR_INVALID_OPERATION             = 8;
}

message VehicleAreaConfig {
    required int32  area_id             = 1;
    optional sint32 min_int32_value     = 2;
    optional sint32 max_int32_value     = 3;
    optional sint64 min_int64_value     = 4;
    optional sint64 max_int64_value     = 5;
    optional float  min_float_value     = 6;
    optional float  max_float_value     = 7;
}

message VehiclePropConfig {
    required int32             prop                = 1;
    optional int32             access              = 2;
    optional int32             change_mode         = 3;
    optional int32             value_type          = 4;
    optional int32             supported_areas     = 5;
    repeated VehicleAreaConfig area_configs        = 6;
    optional int32             config_flags        = 7;
    repeated int32             config_array        = 8;
    optional string            config_string       = 9;
    optional float             min_sample_rate     = 10;
    optional float             max_sample_rate     = 11;
};

message VehiclePropValue {
    // common data
    required int32  prop                = 1;
    optional int32  value_type          = 2;
    optional int64  timestamp           = 3;    // required for valid data from HAL, skipped for set

    // values
    optional int32  area_id             = 4;
    repeated sint32 int32_values        = 5;    // this also covers boolean value.
    repeated sint64 int64_values        = 6;
    repeated float  float_values        = 7;
    optional string string_value        = 8;
    optional bytes  bytes_value         = 9;
};

// This structure is used to notify what values to get from the Vehicle HAL
message VehiclePropGet {
    required int32 prop                 = 1;
    optional int32 area_id              = 2;
};

message EmulatorMessage {
    required MsgType           msg_type = 1;
    optional Status            status   = 2;    // Only for RESP messages
    repeated VehiclePropGet    prop     = 3;    // Provided for getConfig, getProperty commands
    repeated VehiclePropConfig config   = 4;
    repeated VehiclePropValue  value    = 5;
};
