Select audio source

[alexsafe]

Hi,

I am looking for ways to select the audio source, if possible independent of the video source. I searched the previous issues maybe these 2 qualify #1139 #782 , sorry if it's discussed someplace else that I missed.

What I tried:

I have a custom class FlexibleMicrophoneSource( var audioSource: Int = MediaRecorder.AudioSource.CAMCORDER ): AudioSource(), GetMicrophoneData { private val microphone = MicrophoneManager(this) microphone.setPreferredDevice(preferredDevice) I am checking the available devices from AudioManager and I chose the Bluetooth one. AudioDeviceInfo.TYPE_BLUETOOTH_SCO -> { preferredDevice = device

I figured this might be the hardest to connect. But it could also be USB, or HDMI. So far I was able to use the phone mic when USB is connected, but when HDMI is connected it takes priority. (Yes, I have a device with USB and HDMI ports).

When I tried the code above to get the mic from the Bluetooth headphones (that I have paired with my phone and is used as default mic/sound) nothing happened and the sound source was the phone mic.

I also tried with MediaRecorder.AudioSource.MIC, DEFAULT, VOICE_COMMUNICATION

[pedroSG94]

Hello,

If you want use bluetooth microphone or other audio source you can try use setPreferedDevice method in MicrophoneSource:

    val audioManager = context?.getSystemService(Context.AUDIO_SERVICE) as? AudioManager
    val devices = audioManager.getDevices(AudioManager.GET_DEVICES_INPUTS)
    //check the list and select the device required
    val deviceSelected = ....
    (genericStream.audioSource as MicrophoneSource).setPreferredDevice(deviceSelected)
    //set null value to reset to default value
    (genericStream.audioSource as MicrophoneSource).setPreferredDevice(null)

[pedroSG94]

Other possible solution is connect the device using bluetooth android API and the microphone should switch atumatically to that device: https://stackoverflow.com/questions/33757491/android-recording-audio-from-bluetooth-headset-sometimes-records-from-the-mic Maybe you need do it before start the audio source.

[alexsafe]

Thanks. This doesn't seem to work. I've tried in various ways, but basically this would be it: I left some comments there.

val audioManager = context?.getSystemService(Context.AUDIO_SERVICE) as? AudioManager
val devices = audioManager?.getDevices(AudioManager.GET_DEVICES_INPUTS)
audioManager?.mode = AudioManager.MODE_NORMAL
audioManager?.setBluetoothScoOn(true);
devices?.mapNotNull { device ->
    log.d("Type: ${device.getType()}")
    log.d("Product Name: ${device.getProductName()}")
    when (device.type) {
        AudioDeviceInfo.TYPE_BUILTIN_MIC -> "Built-in Microphone"
        AudioDeviceInfo.TYPE_BLUETOOTH_SCO -> {
            log.d("micsource ${micSource.audioSource} ..,. ${micSource.preferredDevice?.type}")
            val source = rtmpStream.audioSource as MicrophoneSource
//                        source.audioSource = MediaRecorder.AudioSource.CAMCORDER
            source.setPreferredDevice(device)
//                        changeAudioSource(if (config.with_audio) phoneMicSource else NoAudioSource())
        }
        else -> null
    }
}

If I move that block of code into the AudioDeviceInfo.TYPE_BUILTIN_MIC case it works just fine - for the built in mic