/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.camera.one;
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import java.io.File;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.TimeZone;
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/**
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* A common abstract {@link OneCamera} implementation that contains some utility
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* functions and plumbing we don't want every sub-class of {@link OneCamera} to
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* duplicate. Hence all {@link OneCamera} implementations should sub-class this
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* class instead.
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*/
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public abstract class AbstractOneCamera implements OneCamera {
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protected FocusStateListener mFocusStateListener;
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protected ReadyStateChangedListener mReadyStateChangedListener;
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protected FocusDistanceListener mFocusDistanceListener;
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/**
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* Number of characters from the end of the device serial number used to
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* construct folder names for debugging output.
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*/
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static final int DEBUG_FOLDER_SERIAL_LENGTH = 4;
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@Override
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public final void setFocusStateListener(FocusStateListener listener) {
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mFocusStateListener = listener;
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}
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@Override
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public void setFocusDistanceListener(FocusDistanceListener listener) {
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mFocusDistanceListener = listener;
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}
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@Override
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public void setReadyStateChangedListener(ReadyStateChangedListener listener) {
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mReadyStateChangedListener = listener;
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}
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/**
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* Create a directory we can use to store debugging information during Gcam
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* captures.
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* <br />
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* The directory created is [root]/[folderName]/SSSS_YYYYMMDD_HHMMSS_XXX,
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* where 'SSSS' are the last 'DEBUG_FOLDER_SERIAL_LENGTH' digits of the
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* devices serial number, and 'XXX' are milliseconds of the timestamp.
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*
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* @param root the root into which we put a session-specific sub-directory.
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* @param folderName the sub-folder within 'root' where the data should be
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* put.
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* @return The session-specific directory (absolute path) into which to
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* store debug information.
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*/
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protected static String makeDebugDir(File root, String folderName) {
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if (root == null) {
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return null;
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}
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if (!root.exists() || !root.isDirectory()) {
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throw new RuntimeException("Gcam debug directory not valid or doesn't exist: "
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+ root.getAbsolutePath());
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}
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String serialSubstring = "";
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String serial = android.os.Build.SERIAL;
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if (serial != null) {
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int length = serial.length();
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if (length > DEBUG_FOLDER_SERIAL_LENGTH) {
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serialSubstring = serial.substring(length - DEBUG_FOLDER_SERIAL_LENGTH, length);
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} else {
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serialSubstring = serial;
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}
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}
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SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMdd_HHmmss_SSS");
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simpleDateFormat.setTimeZone(TimeZone.getDefault());
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String currentDateAndTime = simpleDateFormat.format(new Date());
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String burstFolderName = String.format("%s_%s", serialSubstring, currentDateAndTime);
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File destFolder = new File(new File(root, folderName), burstFolderName);
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if (!destFolder.mkdirs()) {
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throw new RuntimeException("Could not create Gcam debug data folder.");
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}
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String destFolderPath = destFolder.getAbsolutePath();
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return destFolderPath;
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}
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/**
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* If set, tells the ready state changed listener the new state.
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*/
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protected void broadcastReadyState(boolean readyForCapture) {
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if (mReadyStateChangedListener != null) {
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mReadyStateChangedListener.onReadyStateChanged(readyForCapture);
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}
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}
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@Override
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public float getMaxZoom() {
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// If not implemented, return 1.0.
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return 1f;
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}
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@Override
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public void setZoom(float zoom) {
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// If not implemented, no-op.
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}
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}
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