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/*
 * Copyright 2015 Austin Keener, Michael Ritter, Florian Spieß, and the JDA contributors
 *
 * 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 net.dv8tion.jda.api.audio;

import club.minnced.opus.util.OpusLibrary;
import net.dv8tion.jda.internal.utils.JDALogger;
import org.slf4j.Logger;

import java.io.IOException;

/**
 * Controller used by JDA to ensure the native
 * binaries for opus en-/decoding are available.
 *
 * @see opus-java source
 */
public final class AudioNatives
{
    private static final Logger LOG = JDALogger.getLog(AudioNatives.class);
    private static boolean initialized;
    private static boolean audioSupported;

    private AudioNatives() {}

    /**
     * Whether the opus library is loaded or not.
     * 
This is initialized by the first call to {@link #ensureOpus()}. * * @return True, opus library is loaded. */ public static boolean isAudioSupported() { return audioSupported; } /** * Whether this class was already initialized or not. * * @return True, if this class was already initialized. * * @see #ensureOpus() */ public static boolean isInitialized() { return initialized; } /** * Checks whether the opus binary was loaded, if not it will be initialized here. *
This is used by JDA to check at runtime whether the opus library is available or not. * * @return True, if the library could be loaded. */ public static synchronized boolean ensureOpus() { if (initialized) return audioSupported; initialized = true; try { if (OpusLibrary.isInitialized()) return audioSupported = true; audioSupported = OpusLibrary.loadFromJar(); } catch (Throwable e) { handleException(e); } finally { if (audioSupported) LOG.info("Audio System successfully setup!"); else LOG.info("Audio System encountered problems while loading, thus, is disabled."); } return audioSupported; } private static void handleException(Throwable e) { if (e instanceof UnsupportedOperationException) { LOG.error("Sorry, JDA's audio system doesn't support this system.\n{}", e.getMessage()); } else if (e instanceof NoClassDefFoundError) { LOG.error("Missing opus dependency, unable to initialize audio!"); } else if (e instanceof IOException) { LOG.error("There was an IO Exception when setting up the temp files for audio.", e); } else if (e instanceof UnsatisfiedLinkError) { LOG.error("JDA encountered a problem when attempting to load the Native libraries. Contact a DEV.", e); } else if (e instanceof Error) { throw (Error) e; } else { LOG.error("An unknown exception occurred while attempting to setup JDA's audio system!", e); } } }




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