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/*
* Copyright (C) 2022 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;
import android.hardware.cas.AidlCasPluginDescriptor;
import android.hardware.cas.ICas;
import android.hardware.cas.ICasListener;
import android.hardware.cas.IDescrambler;
/**
* 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.
* @hide
*/
@VintfStability
interface IMediaCasService {
/**
* Construct a new instance of a DescramblerPlugin given a CA_system_id.
*
* @param CA_system_id the id of the CA system.
* @return the newly created plugin interface.
*/
IDescrambler createDescrambler(in int CA_system_id);
/**
* Construct a new instance of a CasPlugin given a CA_system_id.
*
* @param CA_system_id the id of the CA system.
* @param listener the event listener to receive events coming from the CasPlugin.
* @return the newly created CasPlugin interface.
*/
ICas createPlugin(in int CA_system_id, in ICasListener listener);
/**
* List all available CA systems on the device.
*
* @return an array of descriptors for the available CA systems.
*/
AidlCasPluginDescriptor[] enumeratePlugins();
/**
* Query if the descrambling scheme for a CA system is supported on this device.
*
* @param CA_system_id the id of the CA system.
* @return whether the specified descrambling scheme is supported on this device.
*/
boolean isDescramblerSupported(in int CA_system_id);
/**
* Query if a certain CA system is supported on this device.
*
* @param CA_system_id the id of the CA system.
* @return whether the specified CA system is supported on this device.
*/
boolean isSystemIdSupported(in int CA_system_id);
}