@Override
public boolean onContextItemSelected(MenuItem item) {
int posn = (int) ((AdapterContextMenuInfo) item.getMenuInfo()).position;
Codec c = codecs.elementAt(posn);
if (item.getItemId() == MENU_UP) {
if (posn == 0) return super.onContextItemSelected(item);
Codec tmp = codecs.elementAt(posn - 1);
codecs.set(posn - 1, c);
codecs.set(posn, tmp);
} else if (item.getItemId() == MENU_DOWN) {
if (posn == codecs.size() - 1) return super.onContextItemSelected(item);
Codec tmp = codecs.elementAt(posn + 1);
codecs.set(posn + 1, c);
codecs.set(posn, tmp);
}
PreferenceScreen ps = getPreferenceScreen();
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(Receiver.mContext);
String v = "";
SharedPreferences.Editor e = sp.edit();
for (Codec d : codecs) v = v + d.number() + " ";
e.putString(Settings.PREF_CODECS, v);
e.commit();
ps.removeAll();
addPreferences(ps);
return super.onContextItemSelected(item);
}
private static void saveCodecPrefs(SharedPreferences sp) {
String v = "";
for (Codec c : codecs) v = v + c.number() + " ";
SharedPreferences.Editor e = sp.edit();
e.putString(Settings.PREF_CODECS, v);
e.commit();
}
public static int[] getCodecs() {
Vector<Integer> v = new Vector<Integer>(codecs.size());
for (Codec c : codecs) {
if (!c.isValid()) continue;
v.add(c.number());
}
int i[] = new int[v.size()];
for (int j = 0; j < i.length; j++) i[j] = v.elementAt(j);
return i;
}
static {
final int size = codecs.size();
codecsNumbers = new HashMap<Integer, Codec>(size);
codecsNames = new HashMap<String, Codec>(size);
for (Codec c : codecs) {
codecsNames.put(c.name(), c);
codecsNumbers.put(c.number(), c);
}
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(Receiver.mContext);
String prefs = sp.getString(Settings.PREF_CODECS, Settings.DEFAULT_CODECS);
if (prefs == null) {
saveCodecPrefs(sp);
} else {
String[] vals = prefs.split(" ");
Vector<Codec> orderedCodecs = new Vector<Codec>();
for (String v : vals) {
try {
int i = Integer.parseInt(v);
Codec c = codecsNumbers.get(i);
/* moves the configured codecs to the beginning of the list,
* and any new codecs will automatically go at the end */
if (c != null) {
codecs.remove(c);
orderedCodecs.add(c);
}
} catch (Exception e) {
// do nothing (expecting
// NumberFormatException and
// indexnot found
}
}
orderedCodecs.addAll(codecs);
codecs.clear();
for (Codec c : orderedCodecs) {
if (c.isLicensed()) codecs.add(c);
}
saveCodecPrefs(sp);
}
}
public static Map getCodec(SessionDescriptor offers) {
Logger logger = Logger.getLogger(Codecs.class.getCanonicalName());
if (offers == null) {
logger.warning("offers == null");
return null;
}
MediaDescriptor mAudio = offers.getMediaDescriptor("audio");
if (mAudio == null) {
logger.warning("offer doesn't contain m=audio");
logger.info(offers.toString());
return null;
}
MediaField m = mAudio.getMedia();
if (m == null) {
logger.warning("media field invalid");
return null;
}
String proto = m.getTransport();
// see http://tools.ietf.org/html/rfc4566#page-22, paragraph 5.14, <fmt> description
if (proto.equals("RTP/AVP") || proto.equals("RTP/SAVP") || proto.equals("RTP/SAVPF")) {
Vector<String> formats = m.getFormatList();
Vector<String> names = new Vector<String>(formats.size());
Vector<Integer> numbers = new Vector<Integer>(formats.size());
Vector<Codec> codecmap = new Vector<Codec>(formats.size());
// add all avail formats with empty names
for (String fmt : formats) {
try {
int number = Integer.parseInt(fmt);
numbers.add(number);
names.add("");
codecmap.add(null);
} catch (NumberFormatException e) {
// continue ... remote sent bogus rtp setting
}
}
;
logger.info("got " + numbers.size() + " format numbers");
// if we have attrs for format -> set name
Vector<AttributeField> attrs = offers.getMediaDescriptor("audio").getAttributes("rtpmap");
logger.info("got " + attrs.size() + " rtpmap attributes");
for (AttributeField a : attrs) {
String s = a.getValue();
// skip over "rtpmap:"
s = s.substring(7, s.indexOf("/"));
int i = s.indexOf(" ");
try {
String name = s.substring(i + 1);
int number = Integer.parseInt(s.substring(0, i));
int index = numbers.indexOf(number);
logger.info("format offered " + index + ", " + name);
if (index >= 0) names.set(index, name.toLowerCase());
} catch (NumberFormatException e) {
// continue ... remote sent bogus rtp setting
}
}
Codec codec = null;
int index = formats.size() + 1;
logger.info("number of local codecs = " + codecs.size());
for (Codec c : codecs) {
logger.info("checking " + c.userName() + ", valid = " + c.isValid());
if (!c.isValid()) continue;
// search current codec in offers by name
int i = names.indexOf(c.userName().toLowerCase());
if (i >= 0) {
logger.info("adding codec " + c.userName() + " by name");
codecmap.set(i, c);
if ((codec == null) || (i < index)) {
codec = c;
index = i;
continue;
}
}
// search current codec in offers by number
i = numbers.indexOf(c.number());
if (i >= 0) {
if (names.elementAt(i).equals("")) {
logger.info("adding codec " + c.userName() + " by number");
codecmap.set(i, c);
if ((codec == null) || (i < index)) {
// fmt number has no attr with name
codec = c;
index = i;
continue;
}
}
}
}
if (codec != null) return new Map(numbers.elementAt(index), codec, numbers, codecmap);
else {
// no codec found ... we can't talk
logger.warning("didn't find any recognised codec");
return null;
}
} else {
/*formats of other protocols not supported yet*/
logger.warning("can't handle protocol: " + proto);
return null;
}
}