platform_hardware_interfaces/drm/1.0/ICryptoFactory.hal

/*
 * Copyright (C) 2016 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@1.0;

import ICryptoPlugin;

/**
 * Ref: frameworks/native/include/media/hardware/CryptoAPI.h:CryptoFactory
 *
 * ICryptoFactory is the main entry point for interacting with a vendor's
 * crypto HAL to create crypto plugins. Crypto plugins create crypto sessions
 * which are used by a codec to decrypt protected video content.
 */
interface ICryptoFactory {
    /**
     * Determine if a crypto scheme is supported by this HAL
     *
     * @param uuid identifies the crypto scheme in question
     * @return isSupported must be true only if the scheme is supported
     */
    isCryptoSchemeSupported(uint8_t[16] uuid) generates(bool isSupported);

    /**
     * Create a crypto plugin for the specified uuid and scheme-specific
     * initialization data.
     *
     * @param uuid uniquely identifies the drm scheme. See
     * http://dashif.org/identifiers/protection for uuid assignments
     * @param initData scheme-specific init data.
     * @return status the status of the call. The HAL implementation must return
     * OK if the plugin is created and ERROR_DRM_CANNOT_HANDLE if the plugin
     * cannot be created.
     * @return cryptoPlugin the created ICryptoPlugin
     */
    createPlugin(uint8_t[16] uuid, vec<uint8_t> initData)
        generates (Status status, ICryptoPlugin cryptoPlugin);
};