private void init(Interface intf) throws IOException {
if (intf == null || intf.getNumEndpoints() != 2) throw new IllegalArgumentException();
// XXX presumably this handles the "multiple devfs claims" case; check.
intf.claim();
this.intf = intf;
try {
for (int i = 0; i < intf.getNumEndpoints(); i++) {
Endpoint ep = intf.getEndpoint(i);
if (!"bulk".equals(ep.getType())) throw new IllegalArgumentException();
if (ep.isInput()) in = ep.getInputStream();
else out = ep.getOutputStream();
}
if (in == null || out == null) throw new IllegalArgumentException();
} catch (IOException e) {
try {
close();
} catch (Exception x) {
intf = null;
}
throw e;
} catch (RuntimeException e) {
try {
close();
} catch (Exception x) {
intf = null;
}
throw e;
}
}
private static void printEndpoint(int indent, Endpoint e) {
if (e == null) {
indentLine(indent, "<!-- endpoint not available -->");
return;
}
indentLine(
indent,
"<endpoint addr='"
+ e.getEndpointAddress()
+ "' direction='"
+ (e.isInput() ? "in" : "out")
+ "' type='"
+ e.getType()
+ "'");
indentLine(
indent + 4,
"attributes='"
+ Integer.toHexString(e.getAttributes())
+ "' maxpacket='"
+ e.getMaxPacketSize()
+ "' interval='"
+ e.getInterval()
// XXX two "extra" bytes in audio endpoints ...
+ "'/>");
maybePrintDescriptors(indent, e.nextDescriptor());
}