/* * 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.fanxin.huangfangyi.main.widget.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"); } } }