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javawindowsmicrophone

How to detect if a microphone is used by any application

I wrote a program that changes my light depending on whether I'm in a meeting or not. The easiest way to detect this is to check if the microphone is on. Currently, I check if a microphone icon appears on the screen (OpenCv): enter image description here

I'm sure it's not the most optimal solution. Is there any way in Java to detect the fact that a microphone is being used?

Solution

  • Thanks to Eskandar Abedini I was able to do it! Below is the entire code:

    public enum RegistryType {

    MICROPHONE("microphone"),
    WEBCAM("webcam");

    private final String pathValue;

    RegistryType(String pathValue) {
        this.pathValue = pathValue;
    }

    public String getNonPackagePath() {
        return "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\CapabilityAccessManager\\ConsentStore\\" + pathValue + "\\NonPackaged";
    }

}

public class RegistryManager {

    private static final String LAST_USED_TIME_STOP = "LastUsedTimeStop";
    private static final Long LAST_USED_TIME_STOP_VALUE = 0L;

    private RegistryManager() {
    }

    public static boolean isMicrophoneWorking() {
        return isDeviceWorking(MICROPHONE);
    }

    public static boolean isWebcamWorking() {
        return isDeviceWorking(WEBCAM);
    }
    private static boolean isDeviceWorking(final RegistryType registryType) {
        final String[] folders = Advapi32Util.registryGetKeys(WinReg.HKEY_CURRENT_USER, registryType.getNonPackagePath());
        return Arrays.stream(folders)
                .map(folder -> registryType.getNonPackagePath() + "\\" + folder)
                .map(register -> Advapi32Util.registryGetLongValue(WinReg.HKEY_CURRENT_USER, register, LAST_USED_TIME_STOP))
                .anyMatch(lastUsedTimeStop -> LAST_USED_TIME_STOP_VALUE.compareTo(lastUsedTimeStop) >= 0);
    }

}

    And I also had to use: https://github.com/java-native-access/jna