1/*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.hardware.gnss.measurement_corrections@1.0;
18
19/**
20 * GNSS measurement corrections callback interface.
21 */
22interface IMeasurementCorrectionsCallback {
23
24    /**
25     * Flags to indicate supported measurement corrections capabilities
26     *
27     * Either the LOS_SATS or the EXCESS_PATH_LENGTH capability must be supported.
28     */
29    enum Capabilities : uint32_t {
30        /** GNSS supports line-of-sight satellite identification measurement corrections */
31        LOS_SATS                        = 1 << 0,
32        /** GNSS supports per satellite excess-path-length measurement corrections */
33        EXCESS_PATH_LENGTH              = 1 << 1,
34        /** GNSS supports reflecting planes measurement corrections */
35        REFLECTING_PLANE                = 1 << 2
36    };
37
38    /**
39     * Callback to inform framework the measurement correction specific capabilities of the GNSS
40     * HAL implementation.
41     *
42     * The GNSS HAL must call this method immediately after the framework opens the measurement
43     * corrections interface.
44     *
45     * @param capabilities Supported measurement corrections capabilities. It is mandatory to
46     *        support either LOS_STATS or EXCESS_PATH_LENGTH capability.
47     *
48     */
49    setCapabilitiesCb(bitfield<Capabilities> capabilities);
50};