Polling hid_enumerate() every 3 seconds causes freezes and stutters on some USB audio devices and mice.
We'll only enumerate devices when we get notification that the system devices have changed
Sam Lantinga
parent
2dc04b4c11
commit
ec74c318b9
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@ -25,11 +25,29 @@
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#include "SDL_endian.h"
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#include "SDL_hints.h"
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#include "SDL_log.h"
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#include "SDL_thread.h"
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#include "SDL_timer.h"
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#include "SDL_joystick.h"
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#include "../SDL_sysjoystick.h"
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#include "SDL_hidapijoystick_c.h"
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#if defined(__WIN32__)
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#include "../../core/windows/SDL_windows.h"
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#endif
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#if defined(__MACOSX__)
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#include <CoreFoundation/CoreFoundation.h>
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#include <mach/mach.h>
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#include <IOKit/IOKitLib.h>
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#include <IOKit/usb/USBSpec.h>
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#endif
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#if defined(__LINUX__)
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#include "../../core/linux/SDL_udev.h"
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#ifdef SDL_USE_LIBUDEV
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#include <poll.h>
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#endif
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#endif
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struct joystick_hwdata
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{
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@ -77,7 +95,282 @@ static SDL_HIDAPI_DeviceDriver *SDL_HIDAPI_drivers[] = {
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};
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static SDL_HIDAPI_Device *SDL_HIDAPI_devices;
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static int SDL_HIDAPI_numjoysticks = 0;
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static Uint32 SDL_HIDAPI_last_detect = 0;
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static struct
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{
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SDL_bool m_bHaveDevicesChanged;
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SDL_bool m_bCanGetNotifications;
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Uint32 m_unLastDetect;
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#if defined(__WIN32__)
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SDL_threadID m_nThreadID;
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WNDCLASSEXA m_wndClass;
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HWND m_hwndMsg;
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HDEVNOTIFY m_hNotify;
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double m_flLastWin32MessageCheck;
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#endif
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#if defined(__MACOSX__)
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IONotificationPortRef m_notificationPort;
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mach_port_t m_notificationMach;
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#endif
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#if defined(SDL_USE_LIBUDEV)
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struct udev *m_pUdev;
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struct udev_monitor *m_pUdevMonitor;
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int m_nUdevFd;
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#endif
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} SDL_HIDAPI_discovery;
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#ifdef __WIN32__
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struct _DEV_BROADCAST_HDR
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{
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DWORD dbch_size;
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DWORD dbch_devicetype;
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DWORD dbch_reserved;
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};
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typedef struct _DEV_BROADCAST_DEVICEINTERFACE_A
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{
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DWORD dbcc_size;
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DWORD dbcc_devicetype;
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DWORD dbcc_reserved;
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GUID dbcc_classguid;
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char dbcc_name[ 1 ];
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} DEV_BROADCAST_DEVICEINTERFACE_A, *PDEV_BROADCAST_DEVICEINTERFACE_A;
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typedef struct _DEV_BROADCAST_HDR DEV_BROADCAST_HDR;
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#define DBT_DEVICEARRIVAL 0x8000 /* system detected a new device */
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#define DBT_DEVTYP_DEVICEINTERFACE 0x00000005 /* device interface class */
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#define DBT_DEVNODES_CHANGED 0x0007
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#define DBT_CONFIGCHANGED 0x0018
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#define DBT_DEVICETYPESPECIFIC 0x8005 /* type specific event */
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#define DBT_DEVINSTSTARTED 0x8008 /* device installed and started */
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#include <initguid.h>
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DEFINE_GUID(GUID_DEVINTERFACE_USB_DEVICE, 0xA5DCBF10L, 0x6530, 0x11D2, 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED);
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static LRESULT CALLBACK ControllerWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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switch (message) {
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case WM_DEVICECHANGE:
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switch (wParam) {
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case DBT_DEVICEARRIVAL:
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if (((DEV_BROADCAST_HDR*)lParam)->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE) {
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SDL_HIDAPI_discovery.m_bHaveDevicesChanged = SDL_TRUE;
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}
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break;
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}
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return 0;
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}
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return DefWindowProc(hwnd, message, wParam, lParam);
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}
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#endif /* __WIN32__ */
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#if defined(__MACOSX__)
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static void CallbackIOServiceFUNC(void *context, io_iterator_t portIterator)
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{
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/* Must drain the iterator, or we won't receive new notifications */
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while ((io_object_t entry = IOIteratorNext(portIterator)) != NULL) {
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IOObjectRelease(entry);
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*(SDL_bool*)context = SDL_TRUE;
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}
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}
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#endif /* __MACOSX__ */
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static void
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HIDAPI_InitializeDiscovery()
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{
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SDL_HIDAPI_discovery.m_bHaveDevicesChanged = SDL_TRUE;
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SDL_HIDAPI_discovery.m_bCanGetNotifications = SDL_FALSE;
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SDL_HIDAPI_discovery.m_unLastDetect = 0;
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#if defined(__WIN32__)
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SDL_HIDAPI_discovery.m_nThreadID = SDL_ThreadID();
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SDL_memset(&SDL_HIDAPI_discovery.m_wndClass, 0x0, sizeof(SDL_HIDAPI_discovery.m_wndClass));
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SDL_HIDAPI_discovery.m_wndClass.hInstance = GetModuleHandle(NULL);
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SDL_HIDAPI_discovery.m_wndClass.lpszClassName = "ControllerDetect";
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SDL_HIDAPI_discovery.m_wndClass.lpfnWndProc = ControllerWndProc; /* This function is called by windows */
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SDL_HIDAPI_discovery.m_wndClass.cbSize = sizeof(WNDCLASSEX);
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RegisterClassExA(&SDL_HIDAPI_discovery.m_wndClass);
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SDL_HIDAPI_discovery.m_hwndMsg = CreateWindowExA(0, "ControllerDetect", NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL);
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{
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DEV_BROADCAST_DEVICEINTERFACE_A devBroadcast;
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SDL_memset( &devBroadcast, 0x0, sizeof( devBroadcast ) );
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devBroadcast.dbcc_size = sizeof( devBroadcast );
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devBroadcast.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
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devBroadcast.dbcc_classguid = GUID_DEVINTERFACE_USB_DEVICE;
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/* DEVICE_NOTIFY_ALL_INTERFACE_CLASSES is important, makes GUID_DEVINTERFACE_USB_DEVICE ignored,
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* but that seems to be necessary to get a notice after each individual usb input device actually
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* installs, rather than just as the composite device is seen.
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*/
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SDL_HIDAPI_discovery.m_hNotify = RegisterDeviceNotification( SDL_HIDAPI_discovery.m_hwndMsg, &devBroadcast, DEVICE_NOTIFY_WINDOW_HANDLE | DEVICE_NOTIFY_ALL_INTERFACE_CLASSES );
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SDL_HIDAPI_discovery.m_bCanGetNotifications = ( SDL_HIDAPI_discovery.m_hNotify != 0 );
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}
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#endif /* __WIN32__ */
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#if defined(__MACOSX__)
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SDL_HIDAPI_discovery.m_notificationPort = IONotificationPortCreate(kIOMasterPortDefault);
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if (SDL_HIDAPI_discovery.m_notificationPort) {
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{
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CFMutableDictionaryRef matchingDict = IOServiceMatching("IOUSBDevice");
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/* Note: IOServiceAddMatchingNotification consumes the reference to matchingDict */
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io_iterator_t portIterator = 0;
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if (IOServiceAddMatchingNotification(SDL_HIDAPI_discovery.m_notificationPort, kIOMatchedNotification, matchingDict, CallbackIOServiceFunc, &SDL_HIDAPI_discovery.m_bHaveDevicesChanged, &portIterator) == 0) {
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/* Must drain the existing iterator, or we won't receive new notifications */
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while (io_object_t entry = IOIteratorNext(portIterator)) {
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IOObjectRelease(entry);
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}
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} else {
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IONotificationPortDestroy(SDL_HIDAPI_discovery.m_notificationPort);
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SDL_HIDAPI_discovery.m_notificationPort = nil;
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}
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}
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{
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CFMutableDictionaryRef matchingDict = IOServiceMatching("IOBluetoothDevice");
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/* Note: IOServiceAddMatchingNotification consumes the reference to matchingDict */
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io_iterator_t portIterator = 0;
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if (IOServiceAddMatchingNotification(SDL_HIDAPI_discovery.m_notificationPort, kIOMatchedNotification, matchingDict, CallbackIOServiceFunc, &SDL_HIDAPI_discovery.m_bHaveDevicesChanged, &portIterator) == 0) {
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/* Must drain the existing iterator, or we won't receive new notifications */
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while (io_object_t entry = IOIteratorNext(portIterator)) {
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IOObjectRelease(entry);
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}
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} else {
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IONotificationPortDestroy(SDL_HIDAPI_discovery.m_notificationPort);
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SDL_HIDAPI_discovery.m_notificationPort = nil;
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}
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}
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}
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SDL_HIDAPI_discovery.m_notificationMach = MACH_PORT_NULL;
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if (SDL_HIDAPI_discovery.m_notificationPort) {
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SDL_HIDAPI_discovery.m_notificationMach = IONotificationPortGetMachPort(SDL_HIDAPI_discovery.m_notificationPort);
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}
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SDL_HIDAPI_discovery.m_bCanGetNotifications = (SDL_HIDAPI_discovery.m_notificationMach != MACH_PORT_NULL);
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#endif // __MACOSX__
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#if defined(SDL_USE_LIBUDEV)
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SDL_HIDAPI_discovery.m_pUdev = NULL;
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SDL_HIDAPI_discovery.m_pUdevMonitor = NULL;
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SDL_HIDAPI_discovery.m_nUdevFd = -1;
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SDL_HIDAPI_discovery.m_pUdev = udev_new();
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if (SDL_HIDAPI_discovery.m_pUdev) {
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SDL_HIDAPI_discovery.m_pUdevMonitor = udev_monitor_new_from_netlink(SDL_HIDAPI_discovery.m_pUdev, "udev");
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if (SDL_HIDAPI_discovery.m_pUdevMonitor) {
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udev_monitor_enable_receiving(SDL_HIDAPI_discovery.m_pUdevMonitor);
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SDL_HIDAPI_discovery.m_nUdevFd = udev_monitor_get_fd(SDL_HIDAPI_discovery.m_pUdevMonitor);
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SDL_HIDAPI_discovery.m_bCanGetNotifications = true;
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}
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}
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#endif /* SDL_USE_LIBUDEV */
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}
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static void
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HIDAPI_UpdateDiscovery()
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{
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if (!SDL_HIDAPI_discovery.m_bCanGetNotifications) {
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const Uint32 SDL_HIDAPI_DETECT_INTERVAL_MS = 3000; /* Update every 3 seconds */
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Uint32 now = SDL_GetTicks();
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if (!SDL_HIDAPI_discovery.m_unLastDetect || SDL_TICKS_PASSED(now, SDL_HIDAPI_discovery.m_unLastDetect + SDL_HIDAPI_DETECT_INTERVAL_MS)) {
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SDL_HIDAPI_discovery.m_bHaveDevicesChanged = SDL_TRUE;
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SDL_HIDAPI_discovery.m_unLastDetect = now;
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}
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return;
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}
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#if defined(__WIN32__)
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/* We'll only get messages on the same thread that created the window */
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if (SDL_ThreadID() == SDL_HIDAPI_discovery.m_nThreadID) {
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MSG msg;
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while (PeekMessage(&msg, SDL_HIDAPI_discovery.m_hwndMsg, 0, 0, PM_NOREMOVE)) {
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if (GetMessageA(&msg, SDL_HIDAPI_discovery.m_hwndMsg, 0, 0) != 0) {
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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}
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}
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#endif
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#if defined(__MACOSX__)
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if (SDL_HIDAPI_discovery.m_notificationPort) {
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struct { mach_msg_header_t hdr; char payload[ 4096 ]; } msg;
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while (mach_msg(&msg.hdr, MACH_RCV_MSG | MACH_RCV_TIMEOUT, 0, sizeof(msg), SDL_HIDAPI_discovery.m_notificationMach, 0, MACH_PORT_NULL) == KERN_SUCCESS) {
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IODispatchCalloutFromMessage(NULL, &msg.hdr, SDL_HIDAPI_discovery.m_notificationPort);
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}
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}
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#endif
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#if defined(SDL_USE_LIBUDEV)
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if (SDL_HIDAPI_discovery.m_nUdevFd >= 0) {
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/* Drain all notification events.
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* We don't expect a lot of device notifications so just
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* do a new discovery on any kind or number of notifications.
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* This could be made more restrictive if necessary.
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*/
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for (;;) {
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struct pollfd PollUdev;
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PollUdev.fd = SDL_HIDAPI_discovery.m_nUdevFd;
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PollUdev.events = POLLIN;
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if (poll(&PollUdev, 1, 0) != 1) {
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break;
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}
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SDL_HIDAPI_discovery.m_bHaveDevicesChanged = true;
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struct udev_device *pUdevDevice = udev_monitor_receive_device(SDL_HIDAPI_discovery.m_pUdevMonitor);
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if (pUdevDevice) {
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udev_device_unref(pUdevDevice);
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}
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}
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}
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#endif
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}
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static void
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HIDAPI_ShutdownDiscovery()
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{
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#if defined(__WIN32__)
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if (SDL_HIDAPI_discovery.m_hNotify)
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UnregisterDeviceNotification(SDL_HIDAPI_discovery.m_hNotify);
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if (SDL_HIDAPI_discovery.m_hwndMsg) {
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DestroyWindow(SDL_HIDAPI_discovery.m_hwndMsg);
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}
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UnregisterClassA(SDL_HIDAPI_discovery.m_wndClass.lpszClassName, SDL_HIDAPI_discovery.m_wndClass.hInstance);
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#endif
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#if defined(__MACOSX__)
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if (SDL_HIDAPI_discovery.m_notificationPort) {
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IONotificationPortDestroy(SDL_HIDAPI_discovery.m_notificationPort);
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}
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#endif
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#if defined(SDL_USE_LIBUDEV)
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if (SDL_HIDAPI_discovery.m_pUdevMonitor) {
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udev_monitor_unref(SDL_HIDAPI_discovery.m_pUdevMonitor);
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}
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if (SDL_HIDAPI_discovery.m_pUdev) {
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udev_unref(SDL_HIDAPI_discovery.m_pUdev);
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}
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#endif
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}
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static SDL_bool
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HIDAPI_IsDeviceSupported(Uint16 vendor_id, Uint16 product_id)
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@ -205,7 +498,7 @@ HIDAPI_JoystickInit(void)
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}
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SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI,
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SDL_HIDAPIDriverHintChanged, NULL);
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SDL_HIDAPI_last_detect = 0;
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HIDAPI_InitializeDiscovery();
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HIDAPI_JoystickDetect();
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return 0;
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}
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@ -423,11 +716,11 @@ HIDAPI_IsDevicePresent(Uint16 vendor_id, Uint16 product_id)
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static void
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HIDAPI_JoystickDetect(void)
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{
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const Uint32 SDL_HIDAPI_DETECT_INTERVAL_MS = 3000; /* Update every 3 seconds */
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Uint32 now = SDL_GetTicks();
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if (!SDL_HIDAPI_last_detect || SDL_TICKS_PASSED(now, SDL_HIDAPI_last_detect + SDL_HIDAPI_DETECT_INTERVAL_MS)) {
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HIDAPI_UpdateDiscovery();
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if (SDL_HIDAPI_discovery.m_bHaveDevicesChanged) {
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/* FIXME: We probably need to schedule an update in a few seconds as well */
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HIDAPI_UpdateDeviceList();
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SDL_HIDAPI_last_detect = now;
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SDL_HIDAPI_discovery.m_bHaveDevicesChanged = SDL_FALSE;
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}
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}
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