How to use this library with live recording

[rk8339811]

Hi,

I am working on an Audio recording function. I want the recorded Audio to be saved into the internal cache directory of my app so that I can later process it and send it to my server. I have taken the RECORD_AUDIO_PERMISSION in my Android Manifest.

Below is the code I am using for recording audio and save it to a file.

    String uuid = UUID.randomUUID().toString();
    fileName = getExternalCacheDir().getAbsolutePath() + "/" + uuid + ".3gp";


    recorder = new MediaRecorder();
    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    recorder.setOutputFile(fileName);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);


    try {
        recorder.prepare();
        recorder.start();
    } catch (IOException e) {}

The above code to work fine but I am facing another issue. I want to create a Waveform effect for my app for which I am using this library. I know the below code can be used to pass on bytes to the visualizer.

//get reference to visualizer
 mVisualizer = findViewById(R.id.blast);

 //TODO: get the raw audio bytes
 
 //pass the bytes to visualizer
 mVisualizer.setRawAudioBytes(bytes);

Now, my question is how can I get the Bytes in real-time of the Audio which is being recorded and being saved? Should I read the file and extract recent bytes from it at regular intervals or is there any other method to achieve this?

Any help would be appreciated

Thanks.

[vikashrathore081]

private fun convertFileToBytes(file: File):ByteArray {
try {
val b = ByteArray(1024)
val os= ByteArrayOutputStream()
val fis=FileInputStream(file)
var read:Int=0
read=fis.read(b)
while ((fis.read(b).also { read = it })!=-1){
os.write(b,0,read)
}
fis.close()
os.close()
return os.toByteArray()

    } catch (ex: Exception) {
        ex.printStackTrace()
    }
    return byteArrayOf(1,2,3)
}

[christina-bakirtzi]

Were you able to solve this? I have the same issue, but even by adding vikashrathore081 's code I can't seem to make it work!