PreviewCallback.java
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/*
* 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.ectrip.cyt.zxing.camera;
import android.graphics.Point;
import android.hardware.Camera;
import android.os.Handler;
import android.os.Message;
import com.ectrip.cyt.utils.LogUtil;
@SuppressWarnings("deprecation")
final class PreviewCallback implements Camera.PreviewCallback {
private final String TAG = PreviewCallback.class.getSimpleName();
private final CameraConfigurationManager configManager;
private final boolean useOneShotPreviewCallback;
private Handler previewHandler;
private int previewMessage;
PreviewCallback(CameraConfigurationManager configManager,
boolean useOneShotPreviewCallback) {
this.configManager = configManager;
this.useOneShotPreviewCallback = useOneShotPreviewCallback;
}
void setHandler(Handler previewHandler, int previewMessage) {
this.previewHandler = previewHandler;
this.previewMessage = previewMessage;
}
public void onPreviewFrame(byte[] data, Camera camera) {
Point cameraResolution = configManager.getCameraResolution();
if (!useOneShotPreviewCallback) {
camera.setPreviewCallback(null);
}
if (previewHandler != null) {
Message message = previewHandler.obtainMessage(previewMessage,
cameraResolution.x, cameraResolution.y, data);
message.sendToTarget();
previewHandler = null;
} else {
LogUtil.d(TAG, "Got preview callback, but no handler for it");
}
}
}