subject-two/entry/src/main/ets/common/service/videoService.ts

import mediaLibrary from '@ohos.multimedia.mediaLibrary'
import onvifclient from '@ohos.onvifclient';
import fs from '@ohos.file.fs'
import util from '@ohos.util';
import configAddress from '../../common/utils/FileConfig'
import {getCurrentTime} from '../utils/tools'
//开始录屏
export async function startRecordVideo(param,td,context) {
  return new Promise<videoPlayRes>(async (reslove,reject)=>{
    var video_uri = `rtsp://${param.userName}:${param.pwd}@${param.ip}:${param.port}/h264/ch${td}/main/av_stream`;
    // var result3 = onvifclient.startRecordVideo(video_uri, "video/" );
    // const record_handle = result3.dataInt;
    // console.info( `baoyihu startRecordVideo  result:`+result3.result+ ` VideoFile:`+result3.dataString );
    // reslove(record_handle)
    // return
    var mediaTest = mediaLibrary.getMediaLibrary(context);
    let mediaType = mediaLibrary.MediaType.VIDEO;
    let DIR_DOCUMENTS = mediaLibrary.DirectoryType.DIR_VIDEO;
    const num = Math.floor(Math.random() * 10000)
    const name = `movie_record${getCurrentTime(1)}.mp4`
    const path = await mediaTest.getPublicDirectory(DIR_DOCUMENTS);
    mediaTest.createAsset(mediaType, name, path, (error, asset) => {
      const file_asset = asset; // 记录 ，关闭时用到
      asset.open('rw', (error, fd) => {
        if (fd > 0) {
          var file_path = configAddress.videoSavePath + name;
          var result = onvifclient.startRecordVideo(video_uri, file_path, fd);
          var rocord_handle = result.dataInt; // 记录 ，关闭时用到
          reslove({fd,rocord_handle,file_asset})
        } else {
          reslove({fd:0,rocord_handle:0,file_asset:0})
          console.error('baoyihu startRecordVideo File Open failed with error: ' + error);
        }
      });
    });
  })

}

//结束录屏
export async function endRecordVideo(record_handle) {
  if(this.record_handle >0)
  {
    var result = onvifclient.endRecordVideo(record_handle);
    // this.record_handle = -1;
    console.info( `baoyihu endRecordVideo  result:`+result.result+ ` VideoFile:`+result.dataString );
  }
  else
  {
    console.info( `baoyihu endRecordVideo  no task error`);
  }
  // var result = onvifclient.endRecordVideo(filehandle);
  // fs.closeSync(filehandle);
  // file_asset.close(filehandle);

}
/**
 *拍照
 * @param param
 * @param context
 * @param type=0不获取base64
 */
export async function takePhoto(param,context,type=0) {
  return new Promise(async (reslove,reject)=>{
    var video_uri = `rtsp://${param.userName}:${param.pwd}@${param.ip}:${param.port}/h264/ch${param.pztd}/main/av_stream`;

    var mediaTest = mediaLibrary.getMediaLibrary(context);
    let mediaType = mediaLibrary.MediaType.IMAGE;
    let DIR_DOCUMENTS = mediaLibrary.DirectoryType.DIR_IMAGE;
    const path = await mediaTest.getPublicDirectory(DIR_DOCUMENTS);
    const name="picture_record" + getCurrentTime(1) + ".jpg"
    // if(type==1){
    //   var result = onvifclient.getVideoSnapshot(video_uri,"")
    //   reslove(result.dataString)
    // }else{
    //   var result = onvifclient.getVideoSnapshot(video_uri,"")
    //   reslove('')
    // }
    // return
    mediaTest.createAsset(mediaType, name, path, (error, asset) => {
      asset.open('rw', (error, fd) => {
        if (fd > 0) {
          var file_path =configAddress.picSavePath + name
          // var result3 = onvifclient.getVideoSnapshot(video_uri,"");
          var result3 = onvifclient.getVideoSnapshot(video_uri, file_path, fd);
          fs.closeSync(fd);
          asset.close(fd);
          if(type==1){
            fs.lstat(file_path).then((stat) => {
              let file = fs.openSync(file_path, fs.OpenMode.READ_WRITE);
              const size = Number(stat.size) + 100
              let buf = new ArrayBuffer(size);
              let num = fs.readSync(file.fd, buf);
              var that = new util.Base64();
              var array = new Uint8Array(buf);
              var result = that.encodeToStringSync(array); //base64圖片
              mediaTest.deleteAsset(file_path).then(() => {
                console.log('delSuccess')
              }).catch(() => {
                console.log('delError')
              })
              this.fileUtil.deleteF(file_path, 3)
              reslove(result)
            }).catch((err) => {
              console.info("get link status failed with error message: " + err.message + ", error code: " + err.code);
            });
          }else{
            reslove('')
          }
        } else {
          console.error('baoyihu getVideoSnapshot File Open failed with error: ' + error);
        }
      });
    });
  })

}

export interface videoPlayRes {
  rocord_handle?: number;
  fd?: number;
  file_asset?:any
}