Traffic-widget/miniprogram/pages/faceRecognitionVK/index.ts

// pages/faceRecognition/index.ts
import { base } from "../../config/index";
let ctx: WechatMiniprogram.CameraContext | undefined = undefined;
let listener: WechatMiniprogram.CameraFrameListener | undefined;
let createVKSession: WechatMiniprogram.VKSession | undefined = undefined;
let innerAudioContext: WechatMiniprogram.InnerAudioContext;
const app = getApp<IAppOption>();
const topTips = {
  ready: '请正对手机，保持光线充足',
  front: '请正对屏幕',
  left: '请向左转头',
  right: '请向右转头',
}
const bottomTips = {
  recording: '脸部信息录入中...',
  complete: '为达到更好的剪辑效果，请您跑步中接近摄像机，避免遮挡。',
  error: '脸部信息录入失败'
}
let T: number = 0;
let notify = ""
const daoJiShi: number = 15;
let isOver = false;
Page({

  /**
   * 页面的初始数据
   */
  data: {
    isStartVideo: false, // 是否点击开始按钮
    seconds: 0, // 倒计
    topTips: topTips.ready, // 提示语句
    bottomTips: "" // 底部提示语句
  },

  // 开始初始化录制
  async initCamera() {
    if (this.data.isStartVideo) return;
    wx.showLoading({
      title: ""
    })
    this.setData({
      isStartVideo: true
    })
    wx.nextTick(() => {
      app.getPageInfo({
        success: (res: any) => {
          const configPage = res || {};
          this.getMssage(configPage).then(async (r: any) => {
            console.log('是否授权发送消息：', r);
            notify = r;
            ctx = wx.createCameraContext();
            this.createVK();
            this.addListen();
            ctx.startRecord({
              timeout: daoJiShi, // 录制时长
              selfieMirror: false,
              timeoutCallback: (res:any) => {
                // 超出录制时长 关闭录屏
                this.setData({
                  isStartVideo: false,
                  bottomTips: "",
                  topTips: topTips.ready, // 提示语句
                })
                createVKSession?.stop();
                listener?.stop();
                this.getUrl(res);
              },
              success: () => {
                // 调用成功,开始录制
                wx.hideLoading();
                this.setData({
                  seconds: daoJiShi,
                  bottomTips: bottomTips.recording,
                  topTips: topTips.front
                });
                innerAudioContext.src = "assets/voice/front.mp3";
                innerAudioContext?.play();
              },
              fail: () => {
                // 调用失败
                wx.hideLoading();
                this.overVideo();
                wx.showToast({
                  icon: "none",
                  title: "相机调用失败",
                  duration: 2000
                })
              }
            })
          });
        }
      })
    })
  },
  // 添加监听
  addListen() {
    T = Date.now();
    listener = ctx?.onCameraFrame((frame: any) => {
      const Time = daoJiShi * 1000 - (Date.now() - T);
      if (Time % 1000 >= 50) return
      const upData: {
        seconds: number,
        topTips?: string
      } = {
        seconds: Math.floor(Time / 1000)
      }
      if (upData.seconds == 10) {
        innerAudioContext.src = "assets/voice/left.mp3";
        upData.topTips = topTips.left;
      }
      if (upData.seconds == 5) {
        innerAudioContext.src = "assets/voice/right.mp3";
        upData.topTips = topTips.right;
      }
      if (upData.seconds % 5 === 0 && upData.seconds !== 0) innerAudioContext?.play();
      this.setData(upData)

      // 识别人脸是否在画面种
      createVKSession?.detectFace({
        frameBuffer: frame.data, // 图片 ArrayBuffer 数据。人脸图像像素点数据，每四项表示一个像素点的 RGBA
        width: frame.width, // 图像宽度
        height: frame.height, // 图像高度
        scoreThreshold: 0.5, // 评分阈值
        sourceType: 1
      })
    });
    listener?.start();
  },
  // 创建人脸追踪
  createVK() {
    // 初始化人脸识别
    createVKSession = wx.createVKSession({
      version: "v1",
      track: {
        plane: {
          mode: 1
        },
        face: { mode: 2 } // mode: 1 - 使用摄像头；2 - 手动传入图像
      },
    })
    // 静态图片检测模式下，每调一次 detectFace 接口就会触发一次 updateAnchors 事件
    createVKSession?.on('updateAnchors', (anchors) => {
      for (let I = 0; I < anchors.length; I++) {
        const anchor = anchors[I];
        const W = anchor.size.width * 100;
        let titlet = "";
        if (W < 20 || W > 80) titlet = "请远离屏幕"
        if (W < 20) titlet = "请靠近屏幕"
        titlet && wx.showToast({
          icon: "none",
          title: titlet
        })
      }
    })
    createVKSession?.on('removeAnchors', () => {
      wx.showToast({
        title: "未检测到人脸, 请重新采集",
        icon: "error"
      });
      this.overVideo();
    })
    createVKSession?.start(() => { });
  },
  // 结束录像
  overVideo() {
    if (isOver) return;
    isOver = true;
    ctx?.stopRecord({
      compressed: true,
      success: () => {
        ctx = undefined;
        isOver = false;
        listener?.stop();
        this.setData({
          isStartVideo: false,
          bottomTips: "",
          topTips: topTips.ready,
          seconds: 0
        })
      },
      fail: () => {
        ctx = undefined;
        isOver = false;
        listener?.stop();
        this.setData({
          isStartVideo: false,
          bottomTips: "",
          topTips: topTips.ready,
          seconds: 0
        })
      }
    })
    createVKSession?.stop();
    innerAudioContext?.pause();
    innerAudioContext?.destroy();
  },
  // 获取本地临时地址
  getUrl(res: WechatMiniprogram.StartRecordTimeoutCallbackResult) {
    wx.showLoading({
      title: '上传进度：0%',
      mask: true //是否显示透明蒙层，防止触摸穿透
    })
    const uploadTask = wx.uploadFile({
      url: base.url + '/v3/upload',
      filePath: res.tempVideoPath,
      name: 'file', //服务器定义的Key值
      formData: {
        notify
      },
      header: {
        Authorization: wx.getStorageSync("token")
      },
      success: () => {
        wx.hideLoading();
        wx.showToast({
          title: "上传成功",
          duration: 2000,
          icon: "none"
        });
        this.setData({
          topTips: topTips.ready, // 提示语句
          bottomTips: bottomTips.complete
        })
        let time = setTimeout(() => {
          clearTimeout(time);
          wx.reLaunch({
            url: "/pages/downloadPage/index"
          })
        }, 2000)
      },
      fail: () => {
        wx.hideLoading();
        wx.showToast({
          title: "上传失败",
          icon: "none",
          duration: 2000
        })
        this.setData({
          topTips: topTips.ready, // 提示语句
          bottomTips: bottomTips.error
        })
      },
      complete: () => {
      }
    })
    //监听上传进度变化事件
    uploadTask.onProgressUpdate((res) => {
      wx.showLoading({
        title: '上传进度：' + res.progress + '%',
        mask: true //是否显示透明蒙层，防止触摸穿透
      })
    })
  },
  // 非正常中止
  improperStop() {
    this.overVideo();
    wx.navigateBack();
  },
  // 未授权
  unauthorized() {
    wx.showToast({
      title: "拒绝授权将无法录制视频信息"
    });
    this.overVideo();
    wx.navigateBack();
  },
  // 初始化完成
  initialization() { },
  // 获取消息授权
  getMssage(configPage: any) {
    return new Promise((resolve) => {
      if (!configPage.messageID || !wx.canIUse("requestSubscribeMessage")) {
        resolve("reject");
        return
      }
      wx.requestSubscribeMessage({
        tmplIds: configPage?.messageID || [],
        success: (res: WechatMiniprogram.RequestSubscribeMessageSuccessCallbackResult) => {
          resolve(res.p1mpCydIQ6OtxCSa62NaSFiEkQiTsb8KPFaAs1SuKMw || 'reject');
        },
        fail: () => {
          resolve("reject");
        }
      })
    })
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad() {
    innerAudioContext = wx.createInnerAudioContext();
    innerAudioContext.loop = false;
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady() { },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow() {
  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide() {
    // 在录制中退出后台页面隐藏，返回上一页，确保重新进入当前页
    this.overVideo();
  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload() {
    this.overVideo();
  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh() {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom() {

  },

  /**
   * 用户点击右上角分享
   */
  // onShareAppMessage() {

  // },
})

export { }