370 lines
8.8 KiB
Java
370 lines
8.8 KiB
Java
/**
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*
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* Copyright 2003-2005 Jive Software.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.jingleold.media;
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/**
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* Represents a payload type.
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*
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* @author Alvaro Saurin
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*/
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public class PayloadType {
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public static final String NODENAME = "payload-type";
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public static int MAX_FIXED_PT = 95;
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public static int INVALID_PT = 65535;
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private int id;
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private String name;
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private int channels;
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/**
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* Constructor with Id, name and number of channels.
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*
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* @param id The identifier
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* @param name A name
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* @param channels The number of channels
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*/
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public PayloadType(int id, final String name, int channels) {
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super();
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this.id = id;
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this.name = name;
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this.channels = channels;
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}
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/**
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* Default constructor.
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*/
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public PayloadType() {
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this(INVALID_PT, null, 1);
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}
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/**
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* Constructor with Id and name.
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*
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* @param id The identification
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* @param name A name
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*/
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public PayloadType(int id, String name) {
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this(id, name, 1);
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}
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/**
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* Copy constructor.
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*
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* @param pt The other payload type.
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*/
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public PayloadType(PayloadType pt) {
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this(pt.getId(), pt.getName(), pt.getChannels());
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}
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/**
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* Get the ID.
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*
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* @return the ID
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*/
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public int getId() {
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return id;
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}
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/**
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* Set the ID.
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*
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* @param id ID
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*/
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public void setId(int id) {
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this.id = id;
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}
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/**
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* Get the printable name.
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*
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* @return printable name for the payload type
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*/
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public String getName() {
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return name;
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}
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/**
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* Set the printable name.
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*
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* @param name the printable name
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*/
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public void setName(String name) {
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this.name = name;
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}
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/**
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* Get the number of channels used by this payload type.
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*
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* @return the number of channels
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*/
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public int getChannels() {
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return channels;
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}
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/**
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* Set the number of channels for a payload type.
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*
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* @param channels The number of channels
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*/
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public void setChannels(int channels) {
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this.channels = channels;
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}
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/**
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* Return true if the Payload type is not valid.
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*
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* @return true if the payload type is invalid
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*/
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public boolean isNull() {
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if (getId() == INVALID_PT) {
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return true;
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}
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else if (getName() == null) {
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return true;
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}
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return false;
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}
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/*
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* (non-Javadoc)
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*
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* @see java.lang.Object#hashCode()
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*/
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@Override
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public int hashCode() {
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final int PRIME = 31;
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int result = 1;
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result = PRIME * result + getChannels();
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result = PRIME * result + getId();
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result = PRIME * result + (getName() == null ? 0 : getName().hashCode());
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return result;
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}
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/*
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* (non-Javadoc)
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*
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* @see java.lang.Object#equals(java.lang.Object)
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*/
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@Override
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public boolean equals(Object obj) {
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if (this == obj) {
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return true;
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}
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if (obj == null) {
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return false;
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}
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if (!(obj instanceof PayloadType)) {
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return false;
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}
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final PayloadType other = (PayloadType) obj;
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if (getChannels() != other.getChannels()) {
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return false;
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}
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if (getId() != other.getId()) {
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return false;
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}
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// Compare names only for dynamic payload types
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if (getId() > MAX_FIXED_PT) {
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if (getName() == null) {
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if (other.getName() != null) {
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return false;
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}
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}
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else if (!getName().equals(other.getName())) {
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return false;
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}
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}
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return true;
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}
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/**
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* Returns the XML element name of the element.
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*
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* @return the XML element name of the element.
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*/
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public static String getElementName() {
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return NODENAME;
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}
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public String toXML() {
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StringBuilder buf = new StringBuilder();
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buf.append('<').append(getElementName()).append(' ');
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// We covert here the payload type to XML
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if (this.getId() != PayloadType.INVALID_PT) {
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buf.append(" id=\"").append(this.getId()).append('"');
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}
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if (this.getName() != null) {
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buf.append(" name=\"").append(this.getName()).append('"');
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}
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if (this.getChannels() != 0) {
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buf.append(" channels=\"").append(this.getChannels()).append('"');
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}
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if (getChildAttributes() != null) {
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buf.append(getChildAttributes());
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}
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buf.append("/>");
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return buf.toString();
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}
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protected String getChildAttributes() {
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StringBuilder buf = new StringBuilder();
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if (this instanceof PayloadType.Audio) {
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PayloadType.Audio pta = (PayloadType.Audio) this;
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buf.append(" clockrate=\"").append(pta.getClockRate()).append("\" ");
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}
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return buf.toString();
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}
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/**
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* Audio payload type.
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*/
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public static final class Audio extends PayloadType {
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private int clockRate;
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/**
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* Constructor with all the attributes of an Audio payload type.
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*
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* @param id The identifier
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* @param name The name assigned to this payload type
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* @param channels The number of channels
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* @param rate The clock rate
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*/
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public Audio(int id, String name, int channels, int rate) {
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super(id, name, channels);
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clockRate = rate;
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}
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/**
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* Constructor with all the attributes of an Audio payload type.
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*
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* @param id The identifier
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* @param name The name assigned to this payload type
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* @param rate The clock rate
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*/
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public Audio(int id, String name, int rate) {
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super(id, name);
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clockRate = rate;
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}
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/**
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* Empty constructor.
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*/
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public Audio() {
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super();
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clockRate = 0;
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}
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/**
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* Constructor with Id and name.
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*
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* @param id the Id for the payload type
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* @param name the name of the payload type
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*/
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public Audio(int id, String name) {
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super(id, name);
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clockRate = 0;
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}
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/**
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* Copy constructor.
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*
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* @param pt the other payload type
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*/
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public Audio(PayloadType pt) {
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super(pt);
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clockRate = 0;
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}
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/**
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* Copy constructor.
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*
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* @param pt the other payload type
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*/
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public Audio(PayloadType.Audio pt) {
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super(pt);
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clockRate = pt.getClockRate();
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}
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/**
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* Get the sampling clockRate for a payload type.
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*
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* @return The sampling clockRate
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*/
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public int getClockRate() {
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return clockRate;
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}
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/**
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* Set tha sampling clockRate for a playload type.
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*
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* @param rate The sampling clockRate
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*/
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public void setClockRate(int rate) {
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clockRate = rate;
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}
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/*
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* (non-Javadoc)
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*
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* @see java.lang.Object#hashCode()
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*/
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@Override
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public int hashCode() {
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final int PRIME = 31;
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int result = super.hashCode();
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result = PRIME * result + getClockRate();
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return result;
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}
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/*
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* (non-Javadoc)
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*
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* @see java.lang.Object#equals(java.lang.Object)
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*/
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@Override
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public boolean equals(Object obj) {
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if (this == obj) {
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return true;
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}
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if (!super.equals(obj)) {
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return false;
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}
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if (getClass() != obj.getClass()) {
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return false;
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}
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final Audio other = (Audio) obj;
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if (getClockRate() != other.getClockRate()) {
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return false;
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}
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return true;
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}
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}
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}
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