camera/device/3.4/types.hal

/*
 * Copyright (C) 2017 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.
 */

package android.hardware.camera.device@3.4;

import @3.2::StreamConfiguration;
import @3.2::types;

/**
 * StreamConfiguration:
 *
 * Identical to @3.2::StreamConfiguration, except that it contains session parameters.
 */
struct StreamConfiguration {
    /**
     * The definition of StreamConfiguration from the prior version.
     */
    @3.2::StreamConfiguration v3_2;

    /**
     * Session wide camera parameters.
     *
     * The session parameters contain the initial values of any request keys that were
     * made available via ANDROID_REQUEST_AVAILABLE_SESSION_KEYS. The Hal implementation
     * can advertise any settings that can potentially introduce unexpected delays when
     * their value changes during active process requests. Typical examples are
     * parameters that trigger time-consuming HW re-configurations or internal camera
     * pipeline updates. The field is optional, clients can choose to ignore it and avoid
     * including any initial settings. If parameters are present, then hal must examine
     * their values and configure the internal camera pipeline accordingly.
     */
    CameraMetadata sessionParams;
};