/** Returns deep copy of this map instance. */
public MediaSSRCGroupMap copy() {
Map<String, List<SSRCGroup>> mapCopy = new HashMap<String, List<SSRCGroup>>();
for (String media : groupMap.keySet()) {
List<SSRCGroup> listToCopy = new ArrayList<SSRCGroup>(groupMap.get(media));
List<SSRCGroup> listCopy = new ArrayList<SSRCGroup>(listToCopy.size());
for (SSRCGroup group : listToCopy) {
listCopy.add(group.copy());
}
mapCopy.put(media, listCopy);
}
return new MediaSSRCGroupMap(mapCopy);
}
/**
* Extracts SSRC groups from Jingle content list.
*
* @param contents the list of <tt>ContentPacketExtension</tt> which will be examined for media
* SSRC groups.
* @return <tt>MediaSSRCGroupMap</tt> that reflects SSRC groups of media described by given
* content list.
*/
public static MediaSSRCGroupMap getSSRCGroupsForContents(List<ContentPacketExtension> contents) {
MediaSSRCGroupMap mediaSSRCGroupMap = new MediaSSRCGroupMap();
for (ContentPacketExtension content : contents) {
List<SSRCGroup> mediaGroups = mediaSSRCGroupMap.getSSRCGroupsForMedia(content.getName());
// FIXME: does not check for duplicates
mediaGroups.addAll(SSRCGroup.getSSRCGroupsForContent(content));
}
return mediaSSRCGroupMap;
}
/**
* Removes SSRC groups contained ing given <tt>MediaSSRCGroupMap</tt> from this map if they exist.
*
* @param mapToRemove the <tt>MediaSSRCGroupMap</tt> that contains SSRC groups mappings to be
* removed from this instance.
* @return the <tt>MediaSSRCGroupMap</tt> that contains only these SSRC groups which were actually
* removed(existed in this map).
*/
public MediaSSRCGroupMap remove(MediaSSRCGroupMap mapToRemove) {
MediaSSRCGroupMap removedGroups = new MediaSSRCGroupMap();
for (String media : mapToRemove.groupMap.keySet()) {
List<SSRCGroup> groupList = getSSRCGroupsForMedia(media);
List<SSRCGroup> toBeRemoved = new ArrayList<SSRCGroup>();
for (SSRCGroup ssrcGroupToCheck : mapToRemove.groupMap.get(media)) {
for (SSRCGroup ssrcGroup : groupList) {
if (ssrcGroupToCheck.equals(ssrcGroup)) {
toBeRemoved.add(ssrcGroup);
}
}
}
removedGroups.getSSRCGroupsForMedia(media).addAll(toBeRemoved);
groupList.removeAll(toBeRemoved);
}
return removedGroups;
}
