org.jitsi.impl.neomedia.codec.EncodingConfigurationConfigImpl Maven / Gradle / Ivy

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/*
 * Copyright @ 2015 Atlassian Pty Ltd
 *
 * 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 org.jitsi.impl.neomedia.codec;

import java.util.*;

import org.jitsi.service.configuration.*;
import org.jitsi.service.libjitsi.*;
import org.jitsi.service.neomedia.format.*;

/**
 * An EncodingConfiguration implementation that synchronizes it's preferences
 * with a ConfigurationService.
 *
 * @author Boris Grozev
 */
public class EncodingConfigurationConfigImpl
       extends EncodingConfigurationImpl
{
    /**
     * Holds the prefix that will be used to store properties
     */
    private final String propPrefix;

    /**
     * The ConfigurationService instance that will be used to
     * store properties
     */
    private final ConfigurationService cfg = LibJitsi.getConfigurationService();

    /**
     * Constructor. Loads the configuration from prefix
     *
     * @param prefix the prefix to use when loading and storing properties
     */
    public EncodingConfigurationConfigImpl(String prefix)
    {
        propPrefix = prefix;
        loadConfig();
    }

    /**
     * Loads the properties stored under this.propPrefix
     */
    private void loadConfig()
    {
        Map properties = new HashMap<>();

        for (String pName : cfg.getPropertyNamesByPrefix(propPrefix, false))
            properties.put(pName, cfg.getString(pName));

        loadProperties(properties);
    }

    /**
     * Sets the preference associated with encoding to
     * priority, and stores the appropriate property in the
     * configuration service.
     *
     * @param encoding the MediaFormat specifying the encoding to set
     * the priority of
     * @param priority a positive int indicating the priority of
     * encoding to set
     *
     * @see EncodingConfigurationImpl#setPriority(MediaFormat, int)
     */
    @Override
    public void setPriority(MediaFormat encoding, int priority)
    {
        super.setPriority(encoding, priority);

        cfg.setProperty(
                propPrefix + "." + getEncodingPreferenceKey(encoding),
                priority);
    }
}