Hi, Marcus. I think the reason is this: src/java.desktop/windows/native/libjsound/PLATFORM_API_WinOS_DirectSound.cpp
============= /* half a minute to wait before device list is re-read */ #define WAIT_BETWEEN_CACHE_REFRESH_MILLIS 30000 ============= This delay really looks too big, can you please file a bug: https://bugs.java.com/bugdatabase/ On 1/7/20 9:53 am, marcusl wrote:
Hi there, I'm running a Java program under Windows 7 which just fetches the audio devices via the AudioSystem.getMixerInfo() and checks for a specific device. This device is a USB audio device. When the device gets plugged into the computer it takes about 3 sec until it is recognized by the AudioSystem. So no problem here. But if the device has been unplugged it takes about 30 sec until this situation is correctly reported by the AudioSystem. This happens with every USB-device. So, I just want to ask if this is because of the JVM<->Windows communication or if there is some timeout hidden throughout the audio system implementation. I can totally live with the 30 sec if there is no sane way to reduce this time. But I'm also interested in the "why". Thanks in advance Marcus -- Sent from: http://openjdk.5641.n7.nabble.com/OpenJDK-Sound-API-Development-f102085.html
-- Best regards, Sergey.
