public AttributeField attributeField() throws ParseException {
try {
AttributeField attributeField = new AttributeField();
this.lexer.match('a');
this.lexer.SPorHT();
this.lexer.match('=');
this.lexer.SPorHT();
NameValue nameValue = new NameValue();
int ptr = this.lexer.markInputPosition();
try {
String name = lexer.getNextToken(':');
this.lexer.consume(1);
String value = lexer.getRest();
nameValue = new NameValue(name.trim(), value.trim());
} catch (ParseException ex) {
this.lexer.rewindInputPosition(ptr);
String rest = this.lexer.getRest();
if (rest == null) throw new ParseException(this.lexer.getBuffer(), this.lexer.getPtr());
nameValue = new NameValue(rest.trim(), ""); // jvB: use empty string for flag values
}
attributeField.setAttribute(nameValue);
this.lexer.SPorHT();
return attributeField;
} catch (Exception e) {
e.printStackTrace();
throw new ParseException(e.getMessage(), 0);
}
}
/**
* Returns Attribute object with the specified values.
*
* @param name the namee of the attribute
* @param value the value of the attribute
* @return Attribute
*/
public Attribute createAttribute(String name, String value) {
AttributeField attributeImpl = new AttributeField();
try {
attributeImpl.setName(name);
attributeImpl.setValue(value);
} catch (SdpException s) {
s.printStackTrace();
}
return attributeImpl;
}
/* HSC CHANGES START */
public static SessionDescriptor sdpMediaProduct(
SessionDescriptor sdp, Vector<MediaDescriptor> m_descs) {
Vector<MediaDescriptor> new_media = new Vector<MediaDescriptor>();
if (m_descs != null) {
for (Enumeration<MediaDescriptor> e = m_descs.elements(); e.hasMoreElements(); ) {
MediaDescriptor spec_md = e.nextElement();
// System.out.print("DEBUG: SDP: sdp_select:
// "+spec_md.toString());
MediaDescriptor prev_md = sdp.getMediaDescriptor(spec_md.getMedia().getMedia());
// System.out.print("DEBUG: SDP: sdp_origin:
// "+prev_md.toString());
if (prev_md != null) {
Vector<AttributeField> spec_attributes = spec_md.getAttributes();
Vector<AttributeField> prev_attributes = prev_md.getAttributes();
if (spec_attributes.size() == 0 || prev_attributes.size() == 0) {
new_media.addElement(prev_md);
} else {
Vector<AttributeField> new_attributes = new Vector<AttributeField>();
for (Enumeration<AttributeField> i = spec_attributes.elements();
i.hasMoreElements(); ) {
AttributeField spec_attr = i.nextElement();
String spec_name = spec_attr.getAttributeName();
String spec_value = spec_attr.getAttributeValue();
for (Enumeration<AttributeField> k = prev_attributes.elements();
k.hasMoreElements(); ) {
AttributeField prev_attr = k.nextElement();
String prev_name = prev_attr.getAttributeName();
String prev_value = prev_attr.getAttributeValue();
if (prev_name.equals(spec_name) && prev_value.equalsIgnoreCase(spec_value)) {
new_attributes.addElement(prev_attr);
break;
}
}
}
if (new_attributes.size() > 0)
new_media.addElement(
new MediaDescriptor(prev_md.getMedia(), prev_md.getConnection(), new_attributes));
}
}
}
}
SessionDescriptor new_sdp = new SessionDescriptor(sdp);
new_sdp.removeMediaDescriptors();
new_sdp.addMediaDescriptors(new_media);
return new_sdp;
}
