How to implement pause functionality?

[318097]

No description provided.

[buzinas]

Currently there is no way to pause a recording. That said, we would be glad to accept PRs for that, it shouldn't be very difficult.

[picasocro1]

I'm also interested in that too!

[picasocro1]

I've prepared PR for that feature :)

[anirket]

Hi, when will this PR be merged?

[martelman]

@anirket
just implement this.

    function MicRecorder(config) {
      classCallCheck(this, MicRecorder);
  
      this.config = {
        bitRate: 128,
        startRecordingAt: 300,
        deviceId: null,
        ...config
      };
  
      this.activeStream = null;
      this.context = null;
      this.microphone = null;
      this.processor = null;
      this.startTime = 0;
      this.isPaused = false; // Flag to track pause state
      this.isRecording = false; // Flag to track recording state
  
      this.lameEncoder = new Encoder(this.config);
    }
  
    createClass(MicRecorder, [{
      key: 'start',
      value: function start() {
        const AudioContext = window.AudioContext || window.webkitAudioContext;
        this.context = new AudioContext();
        this.config.sampleRate = this.context.sampleRate;
  
        const audioConstraints = this.config.deviceId
          ? { deviceId: { exact: this.config.deviceId } }
          : { audio: true };
  
        return navigator.mediaDevices.getUserMedia(audioConstraints)
          .then(stream => {
            this.activeStream = stream;
            this.isPaused = false;
            this.isRecording = true;
            this.addMicrophoneListener(stream);
            return stream;
          })
          .catch(err => {
            console.error('Error accessing microphone:', err);
            throw err;
          });
      }
    }, {
      key: 'addMicrophoneListener',
      value: function addMicrophoneListener(stream) {
        const _this = this;
  
        this.timerToStart = setTimeout(() => {
          delete _this.timerToStart;
        }, this.config.startRecordingAt);
  
        this.microphone = this.context.createMediaStreamSource(stream);
        this.processor = this.context.createScriptProcessor(0, 1, 1);
  
        this.processor.onaudioprocess = function (event) {
          if (_this.isPaused || !_this.isRecording) {
            return;
          }
  
          if (_this.timerToStart) {
            return;
          }
  
          const inputBuffer = event.inputBuffer.getChannelData(0);
          _this.lameEncoder.encode(inputBuffer);
        };
  
        this.microphone.connect(this.processor);
        this.processor.connect(this.context.destination);
      }
    }, {
      key: 'pause',
      value: function pause() {
        if (!this.isRecording) return;
  
        this.isPaused = true;
        console.log('Recording paused.');
      }
    }, {
      key: 'resume',
      value: function resume() {
        if (!this.isRecording) return;
  
        this.isPaused = false;
        console.log('Recording resumed.');
      }
    }, {
      key: 'stop',
      value: function stop() {
        if (this.processor && this.microphone) {
          this.microphone.disconnect();
          this.processor.disconnect();
  
          if (this.context && this.context.state !== 'closed') {
            this.context.close();
          }
  
          this.processor.onaudioprocess = null;
        }
  
        if (this.activeStream) {
          this.activeStream.getAudioTracks().forEach(track => track.stop());
          this.activeStream = null;
        }
  
        this.isRecording = false;
        this.isPaused = false;
  
        return this;
      }
    }, {
      key: 'getMp3',
      value: function getMp3() {
        return new Promise((resolve, reject) => {
          if (!this.lameEncoder) {
            reject(new Error('Encoder not initialized.'));
            return;
          }
  
          const finalBuffer = this.lameEncoder.finish();
  
          if (finalBuffer.length === 0) {
            reject(new Error('No audio data captured.'));
          } else {
            const mp3Blob = new Blob(finalBuffer, { type: 'audio/mp3' });
            resolve([finalBuffer, mp3Blob]);
            this.lameEncoder.clearBuffer();
          }
        });
      }
    }]);
  
    return MicRecorder;
  }();```