Android Open Source - BarcodeTest Preview Callback






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Back to project page BarcodeTest.

License

The source code is released under:

Copyright (c) 2014, zhongwcool All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * R...

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Java Source Code

/*
 * Copyright (C) 2010 ZXing authors/*from w  w w . j a  va  2s.c  o m*/
 *
 * 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.zxing.camera;

import android.graphics.Point;
import android.hardware.Camera;
import android.os.Handler;
import android.os.Message;
import android.util.Log;

final class PreviewCallback implements Camera.PreviewCallback {

  private static 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 {
      Log.d(TAG, "Got preview callback, but no handler for it");
    }
  }

}




Java Source Code List

com.qr.activity.MainActivity.java
com.qr.activity.SearchResultActivity.java
com.qr.activity.WebviewActivity.java
com.qr.utils.Parser.java
com.zxing.activity.CaptureActivity.java
com.zxing.camera.AutoFocusCallback.java
com.zxing.camera.CameraConfigurationManager.java
com.zxing.camera.CameraManager.java
com.zxing.camera.FlashlightManager.java
com.zxing.camera.PlanarYUVLuminanceSource.java
com.zxing.camera.PreviewCallback.java
com.zxing.decoding.CaptureActivityHandler.java
com.zxing.decoding.DecodeFormatManager.java
com.zxing.decoding.DecodeHandler.java
com.zxing.decoding.DecodeThread.java
com.zxing.decoding.FinishListener.java
com.zxing.decoding.InactivityTimer.java
com.zxing.decoding.Intents.java
com.zxing.encoding.EncodingHandler.java
com.zxing.view.ResultUrlAdapter.java
com.zxing.view.Utility.java
com.zxing.view.ViewfinderResultPointCallback.java
com.zxing.view.ViewfinderView.java