需求是，通过监听onCameraFrame方法不断获取相机实时帧数据转换成jpg图片并不断上传，采用如下代码方法，现在发现因为 wx.canvasToTempFilePath花费的时间越来越长，导致画面越来越卡。。。。。。。。图一刚开始，图二是中间，图三是十秒后     this.listener = camera_ctx.onCameraFrame((frame) => {         // nCounter等于30 是因为一开始相机会有一个对焦的过程，如果一开始获取数据，就是模糊的图片         if (nCounter == 10) {           // console.log('nCounter+30结束');           timeadd2 = new Date()           console.log('nCounter+30时间为: ');           console.log(this.timeFormat(timeadd1, timeadd2));           console.log('实时帧高宽度-----------------------');           console.log('宽度：' + frame.width + ' ' + '高度: ' + frame.height)           //将实时帧像素数据格式转换成Uint8ClampedArray           var data = new Uint8Array(frame.data);           var clamped = new Uint8ClampedArray(data);           // 实时帧数据添加到Canvas上            //将实时帧数据添加到画布   getImgData(data, width, height) {     // console.log('进入到将像素数据添加到画布');     // console.log(this.timeFormat(new Date()));     timecanva1 = new Date()     wx.canvasPutImageData({       canvasId: 'firstCanvas',       x: 0,       y: 0,       width: width,       height: height,       data: data,       success: res => {         // console.log('成功将像素数据添加到画布----------');         // console.log(this.timeFormat(new Date()));         timecanva2 = new Date()         console.log('像素数据添加到画布时间为: ');         console.log(this.timeFormat(timecanva1, timecanva2));         // console.log(res);           //将画布移动到临时图片   getImgPath(width, height) {     // console.log('进入canvans转换为临时图片');     // console.log(this.timeFormat(new Date()));     timeImg1 = new Date()     let that = this     wx.canvasToTempFilePath({       x: 0,       y: 0,       width: width,       height: height,       canvasId: 'firstCanvas',       fileType: 'jpg',       destWidth: width,       destHeight: height,       // 图片的质量       quality: 0.1,       success: res => {         that.canvasContext.clearRect(0, 0, width, height);         console.log('清除后canvasContext-------------------');         console.log(that.canvasContext);         // console.log('成功将canvans转换为临时图片------------');         // console.log(this.timeFormat(new Date()));         timeImg2 = new Date()         console.log('canvans转换为临时图片时间为：');         console.log(this.timeFormat(timeImg1, timeImg2));         that.setData({           restempFilePath: res.tempFilePath         });         that.upLoadImg(res.tempFilePath)       },       fail(res) {         console.log('获取canvans图片失败');         console.log(res);       }     }, this)   },       }     })   },         }         nCounter++       }) [图片][图片][图片]