package com.fzzy.api.utils;
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import com.fzzy.data.ConfigData;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.lang.time.DateFormatUtils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import ws.schild.jave.Encoder;
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import ws.schild.jave.EncoderException;
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import ws.schild.jave.MultimediaObject;
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import ws.schild.jave.encode.AudioAttributes;
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import ws.schild.jave.encode.EncodingAttributes;
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import ws.schild.jave.encode.VideoAttributes;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.util.Date;
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/**
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* 将文件转为二进制流工具类
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*
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* @author czt
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*/
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@Slf4j
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@Service(FileUtils.BEAN_ID)
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public class FileUtils {
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public static final String BEAN_ID = "base.fileUtil";
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@Autowired
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private ConfigData configData;
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/**
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* 根据文件路径将文件转为二进制文件流字符串
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*
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* @param filePath:文件路径
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* @return
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*/
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public static String fileToByteString(String filePath) {
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byte[] bytes = file2byte(filePath);
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return toHexString(bytes);
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}
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/**
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* 根据文件路径将文件转为二进制数组
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*
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* @param filePath:文件路径
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* @return
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*/
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public static byte[] file2byte(String filePath) {
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byte[] buffer = null;
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try {
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File file = new File(filePath);
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FileInputStream fis = new FileInputStream(file);
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ByteArrayOutputStream bos = new ByteArrayOutputStream();
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byte[] b = new byte[1024];
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int n;
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while ((n = fis.read(b)) != -1) {
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bos.write(b, 0, n);
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}
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fis.close();
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bos.close();
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buffer = bos.toByteArray();
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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return buffer;
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}
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/**
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* 将二进制数组转为字符串
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*
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* @param byteArray
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* @return
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*/
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private static String toHexString(byte[] byteArray) {
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if (byteArray == null || byteArray.length < 1)
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throw new IllegalArgumentException(
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"this byteArray must not be null or empty");
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final StringBuilder hexString = new StringBuilder();
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for (int i = 0; i < byteArray.length; i++) {
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if ((byteArray[i] & 0xff) < 0x10)// 0~F前面不零
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hexString.append("0");
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hexString.append(Integer.toHexString(0xFF & byteArray[i]));
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}
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return hexString.toString().toLowerCase();
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}
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public String getInoutFilePath(Date date) {
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if (null == date) {
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date = new Date();
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}
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String basePath = configData.getImgPath() + "INOUT/"
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+ DateFormatUtils.format(date, "yyyyMM") + "/";
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File file = new File(basePath);
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if (!file.exists()) {
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file.mkdirs();
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}
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return basePath;
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}
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public String getSnapFilePath(Date date) {
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if (null == date) {
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date = new Date();
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}
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String basePath = configData.getImgPath() + "SNAP/"
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+ DateFormatUtils.format(date, "yyyyMM") + "/";
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File file = new File(basePath);
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if (!file.exists()) {
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file.mkdirs();
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}
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return basePath;
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}
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public String getCommonFilePath(Date date) {
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if (null == date)
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date = new Date();
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String basePath = configData.getImgPath() + "COMMON/"
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+ DateFormatUtils.format(date, "yyyyMM") + "/";
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File file = new File(basePath);
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if (!file.exists()) {
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file.mkdirs();
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}
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return basePath;
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}
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/**
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* 视频压缩
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*
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* @param source 源文件
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* @param target 目标文件
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* @param rate 压缩比
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*/
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public static void compre(File source, File target, Integer rate) throws EncoderException {
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try {
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log.info("---------------开始压缩---------------");
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long start = System.currentTimeMillis();
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// 音频编码属性配置
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AudioAttributes audio = new AudioAttributes();
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audio.setCodec("libmp3lame");
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// 设置音频比特率,单位:b (比特率越高，清晰度/音质越好，当然文件也就越大 56000 = 56kb)
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// audio.setBitRate(new Integer(56_000));
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audio.setBitRate(new Integer(10));
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// 设置重新编码的音频流中使用的声道数（1 =单声道，2 = 双声道（立体声））
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audio.setChannels(1);
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// 采样率越高声音的还原度越好，文件越大
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// audio.setSamplingRate(new Integer(44100));
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audio.setSamplingRate(new Integer(22050));
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// 视频编码属性配置
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VideoAttributes video = new VideoAttributes();
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// 设置编码
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video.setCodec("h254");
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//设置音频比特率,单位:b (比特率越高，清晰度/音质越好，当然文件也就越大 5600000 = 5600kb)
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// video.setBitRate(new Integer(5_600_000 / rate));
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video.setBitRate(10 / rate);
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// 设置视频帧率（帧率越低，视频会出现断层，越高让人感觉越连续）,这里 除1000是为了单位转换
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video.setFrameRate(15);
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// 编码设置
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EncodingAttributes attr = new EncodingAttributes();
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attr.setOutputFormat("mp4");
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attr.setAudioAttributes(audio);
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attr.setVideoAttributes(video);
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// 设置值编码
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Encoder ec = new Encoder();
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ec.encode(new MultimediaObject(source), target, attr);
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log.info("---------------结束压缩---------------");
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long end = System.currentTimeMillis();
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log.info("压缩前大小：" + source.length() + " 压缩后大小：" + target.length());
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log.info("压缩耗时：" + (end - start));
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} catch (EncoderException e) {
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e.printStackTrace();
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} catch (IllegalArgumentException e) {
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e.printStackTrace();
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}
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}
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}
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