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      1 /*
      2  * Copyright (C) 2018 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 package android.hardware.drm@1.2;
     17 
     18 import @1.1::IDrmFactory;
     19 import @1.1::IDrmPlugin;
     20 import @1.1::SecurityLevel;
     21 
     22 /**
     23  * IDrmFactory is the main entry point for interacting with a vendor's
     24  * drm HAL to create drm plugin instances. A drm plugin instance
     25  * creates drm sessions which are used to obtain keys for a crypto
     26  * session so it can decrypt protected video content.
     27  *
     28  * The 1.2 factory must always create 1.2 IDrmPlugin interfaces, which are
     29  * returned via the 1.0 createPlugin method.
     30  *
     31  * To use 1.2 features the caller must cast the returned interface to a
     32  * 1.2 HAL, using V1_2::IDrmPlugin::castFrom().
     33  *
     34  * The IDrmFactory hal is required because all top-level interfaces
     35  * have to be updated in a minor uprev.
     36  */
     37 
     38 interface IDrmFactory extends @1.1::IDrmFactory {
     39     /**
     40      * Determine if a specific security level is supported by the device.
     41      * This method only differs from @1.0 isCryptoSchemeSupported
     42      * by the addition of a security level.
     43      *
     44      * @param uuid identifies the crypto scheme in question
     45      * @param mimeType identifies the mime type in question
     46      * @param securityLevel specifies the security level required
     47      * @return isSupported must be true only if the scheme is supported
     48      */
     49     isCryptoSchemeSupported_1_2(uint8_t[16] uuid, string mimeType,
     50             @1.1::SecurityLevel securityLevel) generates(bool isSupported);
     51 };
     52