/*
 * Copyright (C) 2019 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.drm@1.3;

import @1.2::IDrmFactory;

/**
 * IDrmFactory is the main entry point for interacting with a vendor's
 * drm HAL to create drm plugin instances. A drm plugin instance
 * creates drm sessions which are used to obtain keys for a crypto
 * session so it can decrypt protected video content.
 *
 * The 1.3 factory must always create 1.2 IDrmPlugin interfaces, which are
 * returned via the 1.0 createPlugin method.
 */

interface IDrmFactory extends @1.2::IDrmFactory {
    /**
     * Return vector of uuids identifying crypto schemes supported by this HAL.
     *
     * @return schemes Vector of uuids for which isCryptoSchemeSupported is true;
     *                 each uuid can be used as input to createPlugin.
     */
    getSupportedCryptoSchemes() generates(vec<uint8_t[16]> schemes);
};