com.github.mrstampy.pprspray.core.streamer.negotiation.NegotiationMessageUtils.java Source code

Introduction

Here is the source code for com.github.mrstampy.pprspray.core.streamer.negotiation.NegotiationMessageUtils.java

Source

/*
 * PepperSpray-core, Encrypted Secure Communications Library
 * 
 * Copyright (C) 2014 Burton Alexander
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * 
 */
package com.github.mrstampy.pprspray.core.streamer.negotiation;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;

import com.github.mrstampy.pprspray.core.streamer.MediaStreamType;
import com.github.mrstampy.pprspray.core.streamer.util.MediaStreamerUtils;

/**
 * The Class NegotiationMessageUtils provides the ability to create negotiation
 * and negotiation acknowledgement messages as Netty ByteBuf objects.
 */
public class NegotiationMessageUtils {

    /**
     * Gets the negotiation message.
     *
     * @param mediaHash
     *          the media hash
     * @param requestedType
     *          the requested type
     * @return the negotiation message
     */
    public static ByteBuf getNegotiationMessage(int mediaHash, MediaStreamType requestedType) {
        int headerLength = MediaStreamerUtils.DEFAULT_HEADER_LENGTH;

        ByteBuf buf = Unpooled.buffer(headerLength + 4);

        MediaStreamerUtils.writeHeader(buf, MediaStreamType.NEGOTIATION, headerLength, 0, mediaHash, 0, false);

        buf.writeBytes(requestedType.ordinalBytes());

        return buf;
    }

    /**
     * Gets the negotiation ack message.
     *
     * @param mediaHash
     *          the media hash
     * @param accepted
     *          the accepted
     * @return the negotiation ack message
     */
    public static ByteBuf getNegotiationAckMessage(int mediaHash, boolean accepted) {
        int headerLength = MediaStreamerUtils.DEFAULT_HEADER_LENGTH;

        ByteBuf buf = Unpooled.buffer(headerLength + 1);

        MediaStreamerUtils.writeHeader(buf, MediaStreamType.NEGOTIATION_ACK, headerLength, 0, mediaHash, 0, false);

        buf.writeBoolean(accepted);

        return buf;
    }

    private NegotiationMessageUtils() {
    }

}