1 /* 2 * Copyright (C) 2010 ZXing authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.zxing.client.android.camera; 18 19 import android.graphics.Point; 20 import android.hardware.Camera; 21 import android.os.Handler; 22 import android.os.Message; 23 import android.util.Log; 24 25 final class PreviewCallback implements Camera.PreviewCallback { 26 27 private static final String TAG = PreviewCallback.class.getSimpleName(); 28 29 private final CameraConfigurationManager configManager; 30 private Handler previewHandler; 31 private int previewMessage; 32 33 PreviewCallback(CameraConfigurationManager configManager) { 34 this.configManager = configManager; 35 } 36 37 void setHandler(Handler previewHandler, int previewMessage) { 38 this.previewHandler = previewHandler; 39 this.previewMessage = previewMessage; 40 } 41 42 public void onPreviewFrame(byte[] data, Camera camera) { 43 Point cameraResolution = configManager.getCameraResolution(); 44 Handler thePreviewHandler = previewHandler; 45 if (thePreviewHandler != null) { 46 Message message = thePreviewHandler.obtainMessage(previewMessage, cameraResolution.x, 47 cameraResolution.y, data); 48 message.sendToTarget(); 49 previewHandler = null; 50 } else { 51 Log.d(TAG, "Got preview callback, but no handler for it"); 52 } 53 } 54 55 } 56
