cas/1.2/IMediaCasService.hal

/*
 * 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.cas@1.2;

import ICas;
import ICasListener;
import @1.1::IMediaCasService;

/**
 * IMediaCasService is the main entry point for interacting with a vendor's
 * cas HAL to create cas and descrambler plugin instances. A cas plugin instance
 * opens cas sessions which are used to obtain keys for a descrambler session,
 * which can in turn be used to descramble protected video content.
 *
 * The 1.2 must always create 1.2 ICas interfaces, which are
 * returned via the 1.1 createPluginExt method.
 *
 * To use 1.2 features the caller must cast the returned interface to a
 * 1.2 HAL, using V1_2::ICas::castFrom().
 */
interface IMediaCasService extends @1.1::IMediaCasService {};