Android Open Source - zxing-android-portrait Preview Callback






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Back to project page zxing-android-portrait.

License

The source code is released under:

Apache License

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Java Source Code

/*
 * Copyright (C) 2010 ZXing authors/*from  w ww.  j  a v a 2 s  .c om*/
 *
 * 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.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 Handler previewHandler;
  private int previewMessage;

  PreviewCallback(CameraConfigurationManager configManager) {
    this.configManager = configManager;
  }

  void setHandler(Handler previewHandler, int previewMessage) {
    this.previewHandler = previewHandler;
    this.previewMessage = previewMessage;
  }

  @Override
  public void onPreviewFrame(byte[] data, Camera camera) {
    Point cameraResolution = configManager.getCameraResolution();
    
 // Rotate the data for Portait Mode
//    long startTick = System.currentTimeMillis();
    int width = cameraResolution.x;
    int height = cameraResolution.y;
    byte[] rotatedData = new byte[data.length];
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++)
            rotatedData[x * height + height - y - 1] = data[x + y * width];
    }
//    long endTick = System.currentTimeMillis();
//    Log.d(TAG, "Rotate data cost " + (endTick - startTick) + " ms");
    
    Handler thePreviewHandler = previewHandler;
    if (cameraResolution != null && thePreviewHandler != null) {
      Message message = thePreviewHandler.obtainMessage(previewMessage, cameraResolution.y,
          cameraResolution.x, rotatedData);
      message.sendToTarget();
      previewHandler = null;
    } else {
      Log.d(TAG, "Got preview callback, but no handler or resolution available");
    }
  }

}




Java Source Code List

com.google.zxing.client.android.AmbientLightManager.java
com.google.zxing.client.android.BeepManager.java
com.google.zxing.client.android.CaptureActivityHandler.java
com.google.zxing.client.android.CaptureActivity.java
com.google.zxing.client.android.Contents.java
com.google.zxing.client.android.DecodeFormatManager.java
com.google.zxing.client.android.DecodeHandler.java
com.google.zxing.client.android.DecodeHintManager.java
com.google.zxing.client.android.DecodeThread.java
com.google.zxing.client.android.FinishListener.java
com.google.zxing.client.android.HelpActivity.java
com.google.zxing.client.android.HttpHelper.java
com.google.zxing.client.android.InactivityTimer.java
com.google.zxing.client.android.IntentSource.java
com.google.zxing.client.android.Intents.java
com.google.zxing.client.android.LocaleManager.java
com.google.zxing.client.android.PreferencesActivity.java
com.google.zxing.client.android.PreferencesFragment.java
com.google.zxing.client.android.ScanFromWebPageManager.java
com.google.zxing.client.android.ViewfinderResultPointCallback.java
com.google.zxing.client.android.ViewfinderView.java
com.google.zxing.client.android.book.BrowseBookListener.java
com.google.zxing.client.android.book.SearchBookContentsActivity.java
com.google.zxing.client.android.book.SearchBookContentsAdapter.java
com.google.zxing.client.android.book.SearchBookContentsListItem.java
com.google.zxing.client.android.book.SearchBookContentsResult.java
com.google.zxing.client.android.camera.AutoFocusManager.java
com.google.zxing.client.android.camera.CameraConfigurationManager.java
com.google.zxing.client.android.camera.CameraManager.java
com.google.zxing.client.android.camera.FrontLightMode.java
com.google.zxing.client.android.camera.PreviewCallback.java
com.google.zxing.client.android.camera.metering.MeteringInterface.java
com.google.zxing.client.android.camera.open.OpenCameraInterface.java
com.google.zxing.client.android.clipboard.ClipboardInterface.java
com.google.zxing.client.android.encode.ContactEncoder.java
com.google.zxing.client.android.encode.EncodeActivity.java
com.google.zxing.client.android.encode.Formatter.java
com.google.zxing.client.android.encode.MECARDContactEncoder.java
com.google.zxing.client.android.encode.QRCodeEncoder.java
com.google.zxing.client.android.encode.VCardContactEncoder.java
com.google.zxing.client.android.encode.VCardFieldFormatter.java
com.google.zxing.client.android.encode.VCardTelDisplayFormatter.java
com.google.zxing.client.android.history.DBHelper.java
com.google.zxing.client.android.history.HistoryActivity.java
com.google.zxing.client.android.history.HistoryItemAdapter.java
com.google.zxing.client.android.history.HistoryItem.java
com.google.zxing.client.android.history.HistoryManager.java
com.google.zxing.client.android.result.AddressBookResultHandler.java
com.google.zxing.client.android.result.CalendarResultHandler.java
com.google.zxing.client.android.result.EmailAddressResultHandler.java
com.google.zxing.client.android.result.GeoResultHandler.java
com.google.zxing.client.android.result.ISBNResultHandler.java
com.google.zxing.client.android.result.ProductResultHandler.java
com.google.zxing.client.android.result.ResultButtonListener.java
com.google.zxing.client.android.result.ResultHandlerFactory.java
com.google.zxing.client.android.result.ResultHandler.java
com.google.zxing.client.android.result.SMSResultHandler.java
com.google.zxing.client.android.result.TelResultHandler.java
com.google.zxing.client.android.result.TextResultHandler.java
com.google.zxing.client.android.result.URIResultHandler.java
com.google.zxing.client.android.result.WifiResultHandler.java
com.google.zxing.client.android.result.supplement.BookResultInfoRetriever.java
com.google.zxing.client.android.result.supplement.ProductResultInfoRetriever.java
com.google.zxing.client.android.result.supplement.SupplementalInfoRetriever.java
com.google.zxing.client.android.result.supplement.TitleRetriever.java
com.google.zxing.client.android.result.supplement.URIResultInfoRetriever.java
com.google.zxing.client.android.share.AppInfo.java
com.google.zxing.client.android.share.AppPickerActivity.java
com.google.zxing.client.android.share.BookmarkAdapter.java
com.google.zxing.client.android.share.BookmarkPickerActivity.java
com.google.zxing.client.android.share.LoadPackagesAsyncTask.java
com.google.zxing.client.android.share.ShareActivity.java
com.google.zxing.client.android.wifi.NetworkType.java
com.google.zxing.client.android.wifi.WifiConfigManager.java