Initial re-upload of spice2x-24-08-24

external/stepmaniax-sdk/sdk/Windows/SMXDeviceSearchThreaded.h

@@ -0,0 +1,46 @@
+#ifndef SMXDeviceSearchThreaded_h
+#define SMXDeviceSearchThreaded_h
+
+#include "Helpers.h"
+#include <windows.h>
+#include <memory>
+#include <vector>
+using namespace std;
+
+namespace SMX {
+
+class SMXDeviceSearch;
+
+// This is a wrapper around SMXDeviceSearch which performs USB scanning in a thread.
+// It's free on Win10, but takes a while on Windows 7 (about 8ms), so running it on
+// a separate thread prevents random timing errors when reading HID updates.
+class SMXDeviceSearchThreaded
+{
+public:
+    SMXDeviceSearchThreaded();
+    ~SMXDeviceSearchThreaded();
+
+    // The same interface as SMXDeviceSearch:
+    vector<shared_ptr<SMX::AutoCloseHandle>> GetDevices();
+    void DeviceWasClosed(shared_ptr<SMX::AutoCloseHandle> pDevice);
+
+    // Synchronously shut down the thread.
+    void Shutdown();
+
+private:
+    void UpdateDeviceList();
+
+    static DWORD WINAPI ThreadMainStart(void *self_);
+    void ThreadMain();
+
+    SMX::Mutex m_Lock;
+    shared_ptr<SMXDeviceSearch> m_pDeviceList;
+    shared_ptr<SMX::AutoCloseHandle> m_hEvent;
+    vector<shared_ptr<SMX::AutoCloseHandle>> m_apDevices;
+    vector<shared_ptr<SMX::AutoCloseHandle>> m_apClosedDevices;
+    bool m_bShutdown = false;
+    HANDLE m_hThread = INVALID_HANDLE_VALUE;
+};
+}
+
+#endif