问如何从flutter webrtc插件中获取音频缓冲区？

EN

public void startRecording(File file) throws Exception {
    recordFile = file;
    if (isRunning)
        return;
    isRunning = true;
    //noinspection ResultOfMethodCallIgnored
    file.getParentFile().mkdirs();
    if (videoTrack != null) {
      System.out.println("try123 1");
        videoFileRenderer = new VideoFileRenderer(
            file.getAbsolutePath(),
            EglUtils.getRootEglBaseContext(),
            audioInterceptor != null
        );
        videoTrack.addSink(videoFileRenderer);
        if (audioInterceptor != null)
            audioInterceptor.attachCallback(id, videoFileRenderer);
    } else {
        Log.e(TAG, "Video track is null");
        if (audioInterceptor != null) {
            //TODO(rostopira): audio only recording
            // throw new Exception("Audio-only recording not implemented yet");
     
            Log.d(TAG, "Try to use onWebrtcSamplesReady");
            audioFileRenderer = new AudioFileRenderer(file);
            audioInterceptor.attachCallback(id, audioFileRenderer);
        }
    }
}