/*
 * 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 android.hardware.drm@1.0::types;

/**
 * Ref: frameworks/native/include/media/drm/DrmAPI.h:DrmPluginListener
 */

/**
 * IDrmPluginListener is a listener interface for Drm events sent from an
 * IDrmPlugin instance.
 */
interface IDrmPluginListener {

    /**
     * Legacy event sending method, it sends events of various types using a
     * single overloaded set of parameters. This form is deprecated.
     *
     * @param eventType the type of the event
     * @param sessionId identifies the session the event originated from
     * @param data event-specific data blob
     */
    oneway sendEvent(EventType eventType, SessionId sessionId,
            vec<uint8_t> data);

    /**
     * Send a license expiration update to the listener. The expiration
     * update indicates how long the current keys are valid before they
     * need to be renewed.
     *
     * @param sessionId identifies the session the event originated from
     * @param expiryTimeInMS the time when the keys need to be renewed.
     * The time is in milliseconds, relative to the Unix epoch. A time
     * of 0 indicates that the keys never expire.
     */
    oneway sendExpirationUpdate(SessionId sessionId, int64_t expiryTimeInMS);

    /**
     * Send a keys change event to the listener. The keys change event
     * indicates the status of each key in the session. Keys can be
     * indicated as being usable, expired, outputnotallowed or statuspending.
     *
     * @param sessionId identifies the session the event originated from
     * @param keyStatusList indicates the status for each key ID in the
     * session.
     * @param hasNewUsableKey indicates if the event includes at least one
     * key that has become usable.
     */
    oneway sendKeysChange(SessionId sessionId, vec<KeyStatus> keyStatusList,
            bool hasNewUsableKey);
};