I have some test, if I play Apple music and open Logic pro same time , it can work good each other. but they play same time that apple music have pop sound. maybe use the usb time stamp upgrade that is not a good way in audio driver kit. Can't understand the sync frame in audio driver kit. Could you give same idea to me? Thanks!
Is that use USB device real samplerate set the device samplerate?
MingJD
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11：16：01.353563+0800 Logic Pro X 188511 HALC_ProxyIOContext.cpp：1621 HALC_ProxyIOContext：：IOWorkLoop：由于过载而跳过循环
11：16：01.353749+0800 音乐 49991 HALC_ProxyIOContext.cpp：1621 HALC_ProxyIOContext：：IOWorkLoop：由于过载而跳过循环
11：16：01.369868+0800 检测到 WindowServer 长渲染。交换 85328 用了 2.4e+03s
11：16：01.373090+0800 内核
11：16：01.373262+0800 kernel com.platane.driver[2615] 尸体故障，太多 6
11：16：01.373315+0800 内核进程 [2615] 崩溃：com.platane.driv。创建的尸体太多。
11：16：01.373766+0800 内核 DK：PlataneUSBDeviceDriver-0x100015945：强制关闭 （PLATANE UP1-0x100015880）
这是 Log，这个问题是一起打开 Logic Pro X 和 Music App，我确定 UpdateCurrentZeroTimestamp 是硬件中的写入速度。
Logic Pro X skipping cycle due to overload
Music skipping cycle due to overload
com.platane.driver Corpse failure, too many 6
kernel Process crashed: com.platane.driv. Too many corpses being created.
kernel force close (PLATANE UP1)
This is Log, This problem is open Logic Pro X and Music App together, I am sure the UpdateCurrentZeroTimestamp is write speed in hardware.
I am develop the a new usb audio driver on M3, I can't fix the problem about click sound when more than 2 music app work together. I read all mac os SDK's API but no way to fix this problem. When I Play music app alone it is clean sound. But Open Logic Pro X and Music App together, the Click sound coming. So I think it is about core audio driver problem. The M E core and P core working is not match, the client sync have problem.
Hi, I think It all about priority, AudioDriverKit's Priority is 63, But System default driver's Priority is 97. So Click and Pop sound is normal in Audio driver kit.