/*
* Copyright (C) 2010 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.zxing.client.android.camera;
import android.hardware.Camera;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
final class AutoFocusCallback implements Camera.AutoFocusCallback {
private static final String TAG = AutoFocusCallback.class.getSimpleName();
private static final long AUTOFOCUS_INTERVAL_MS = 1500L;
private Handler autoFocusHandler;
private int autoFocusMessage;
void setHandler(Handler autoFocusHandler, int autoFocusMessage) {
this.autoFocusHandler = autoFocusHandler;
this.autoFocusMessage = autoFocusMessage;
}
public void onAutoFocus(boolean success, Camera camera) {
if (autoFocusHandler != null) {
Message message = autoFocusHandler.obtainMessage(autoFocusMessage, success);
// Simulate continuous autofocus by sending a focus request every
// AUTOFOCUS_INTERVAL_MS milliseconds.
//Log.d(TAG, "Got auto-focus callback; requesting another");
autoFocusHandler.sendMessageDelayed(message, AUTOFOCUS_INTERVAL_MS);
autoFocusHandler = null;
} else {
Log.d(TAG, "Got auto-focus callback, but no handler for it");
}
}
}
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