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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski //
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// //
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// This file is part of Distorted. //
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// //
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// Distorted is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// Distorted is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.examples.plainmonalisa;
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import android.os.Handler;
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import android.os.Message;
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import android.util.Log;
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import java.lang.ref.WeakReference;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Used for messages sent from the UI thread to the render thread.
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class RenderHandler extends Handler
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{
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private static final String TAG = "RenderHandler";
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private static final int MSG_SURFACE_CREATED = 0;
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private static final int MSG_SURFACE_CHANGED = 1;
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private static final int MSG_DO_FRAME = 2;
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private static final int MSG_SHUTDOWN = 4;
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private WeakReference<RenderThread> mWeakRenderThread;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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RenderHandler(RenderThread rt)
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{
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mWeakRenderThread = new WeakReference<>(rt);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void sendSurfaceCreated()
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{
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sendMessage(obtainMessage(RenderHandler.MSG_SURFACE_CREATED));
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void sendSurfaceChanged(int format, int width, int height)
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{
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sendMessage(obtainMessage(RenderHandler.MSG_SURFACE_CHANGED, width, height));
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void sendDoFrame(long frameTimeNanos)
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{
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sendMessage(obtainMessage(RenderHandler.MSG_DO_FRAME, (int) (frameTimeNanos >> 32), (int) frameTimeNanos));
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void sendShutdown()
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{
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sendMessage(obtainMessage(RenderHandler.MSG_SHUTDOWN));
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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@Override // runs on RenderThread
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public void handleMessage(Message msg)
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{
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int what = msg.what;
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RenderThread renderThread = mWeakRenderThread.get();
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if (renderThread == null)
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{
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Log.w(TAG, "RenderHandler.handleMessage: weak ref is null");
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return;
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}
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switch (what)
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{
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case MSG_SURFACE_CREATED: renderThread.surfaceCreated();
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break;
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case MSG_SURFACE_CHANGED: renderThread.surfaceChanged(msg.arg1, msg.arg2);
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break;
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case MSG_DO_FRAME: long timestamp = (((long) msg.arg1) << 32) | (((long) msg.arg2) & 0xffffffffL);
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renderThread.doFrame(timestamp);
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break;
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case MSG_SHUTDOWN: renderThread.shutdown();
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break;
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default: throw new RuntimeException("unknown message " + what);
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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