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/*
* Copyright (c) 2014, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.android.server.display;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import android.media.RemoteDisplay;
import android.os.Handler;
import android.util.Slog;
import android.content.Context;
class ExtendedRemoteDisplayHelper {
private static final String TAG = "ExtendedRemoteDisplayHelper";
// ExtendedRemoteDisplay class
// ExtendedRemoteDisplay is an enhanced RemoteDisplay. It has
// similar interface as RemoteDisplay class
private static Class sExtRemoteDisplayClass;
// Method object for the API ExtendedRemoteDisplay.Listen
// ExtendedRemoteDisplay.Listen has the same API signature as
// RemoteDisplay.Listen except for an additional argument to pass the
// Context
private static Method sExtRemoteDisplayListen;
// Method Object for the API ExtendedRemoteDisplay.Dispose
// ExtendedRemoteDisplay.Dispose follows the same API signature as
// RemoteDisplay.Dispose
private static Method sExtRemoteDisplayDispose;
static {
//Check availability of ExtendedRemoteDisplay runtime
try {
sExtRemoteDisplayClass = Class.forName("com.qualcomm.wfd.ExtendedRemoteDisplay");
} catch (Throwable t) {
Slog.i(TAG, "ExtendedRemoteDisplay Not available.");
}
if(sExtRemoteDisplayClass != null) {
// If ExtendedRemoteDisplay is available find the methods
Slog.i(TAG, "ExtendedRemoteDisplay Is available. Find Methods");
try {
Class args[] = {
String.class,
RemoteDisplay.Listener.class,
Handler.class, Context.class
};
sExtRemoteDisplayListen = sExtRemoteDisplayClass.getDeclaredMethod("listen", args);
} catch (Throwable t) {
Slog.i(TAG, "ExtendedRemoteDisplay.listen Not available.");
}
try {
Class args[] = {};
sExtRemoteDisplayDispose = sExtRemoteDisplayClass.getDeclaredMethod("dispose", args);
} catch (Throwable t) {
Slog.i(TAG, "ExtendedRemoteDisplay.dispose Not available.");
}
}
}
/**
* Starts listening for displays to be connected on the specified interface.
*
* @param iface The interface address and port in the form "x.x.x.x:y".
* @param listener The listener to invoke
* when displays are connected or disconnected.
* @param handler The handler on which to invoke the listener.
* @param context The current service context
* */
public static Object listen(String iface, RemoteDisplay.Listener listener,
Handler handler, Context context)
{
Object extRemoteDisplay = null;
Slog.i(TAG, "ExtendedRemoteDisplay.listen");
if(sExtRemoteDisplayListen != null && sExtRemoteDisplayDispose != null){
try {
extRemoteDisplay = sExtRemoteDisplayListen.invoke(null,
iface, listener, handler, context);
} catch (InvocationTargetException e) {
Slog.i(TAG, "ExtendedRemoteDisplay.listen - InvocationTargetException");
Throwable cause = e.getCause();
if (cause instanceof RuntimeException) {
throw (RuntimeException) cause;
} else if (cause instanceof Error) {
throw (Error) cause;
} else {
throw new RuntimeException(e);
}
} catch (IllegalAccessException e) {
Slog.i(TAG, "ExtendedRemoteDisplay.listen -IllegalAccessException");
e.printStackTrace();
}
}
return extRemoteDisplay;
}
/**
* Disconnects the remote display and stops listening for new connections.
*/
public static void dispose(Object extRemoteDisplay) {
Slog.i(TAG, "ExtendedRemoteDisplay.dispose");
try{
sExtRemoteDisplayDispose.invoke(extRemoteDisplay);
} catch (InvocationTargetException e) {
Slog.i(TAG, "ExtendedRemoteDisplay.dispose - InvocationTargetException");
Throwable cause = e.getCause();
if (cause instanceof RuntimeException) {
throw (RuntimeException) cause;
} else if (cause instanceof Error) {
throw (Error) cause;
} else {
throw new RuntimeException(e);
}
} catch (IllegalAccessException e) {
Slog.i(TAG, "ExtendedRemoteDisplay.dispose-IllegalAccessException");
e.printStackTrace();
}
}
/**
* Checks if ExtendedRemoteDisplay is available
*/
public static boolean isAvailable()
{
if(sExtRemoteDisplayClass != null &&
sExtRemoteDisplayDispose != null &&
sExtRemoteDisplayListen != null) {
Slog.i(TAG, "ExtendedRemoteDisplay isAvailable() : Available.");
return true;
}
Slog.i(TAG, "ExtendedRemoteDisplay isAvailable() : Not Available.");
return false;
}
}
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