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Fix crash when reading background events for MFi controllers on macOS 

Enabling GCController.shouldMonitorBackgroundEvents to read background events
for MFi controllers before receiving the first GCControllerDidConnectNotification
is apparently a no-go on macOS (12.3.1 for me), and would crash on attempt.
Apple's documentation is... not great, and doesn't point this out.

This waits for IOS_AddMFIJoystickDevice() to get called down the chain from GCControllerDidConnectNotification, and enables GCController.shouldMonitorBackgroundEvents
if it hadn't been already.

On iOS and tvOS, GCController.shouldMonitorBackgroundEvents is ignored, so
there's no need to check their versions.
(cherry picked from commit d1a3981bf8)
This commit is contained in:
Daniel Brookman 2022-05-02 15:22:46 -04:00 committed by Ozkan Sezer
parent f8e14ad25a
commit 09086aefaa
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/joystick/iphoneos/SDL_mfijoystick.m
View File

@ -180,6 +180,10 @@ IsControllerXbox(GCController *controller)
static BOOL
IOS_AddMFIJoystickDevice(SDL_JoystickDeviceItem *device, GCController *controller)
{
if ((@available(macOS 11.3, *)) && !GCController.shouldMonitorBackgroundEvents) {
GCController.shouldMonitorBackgroundEvents = YES;
}
Uint16 *guid16 = (Uint16 *)device->guid.data;
Uint16 vendor = 0;
Uint16 product = 0;
@ -588,10 +592,6 @@ IOS_JoystickInit(void)
return 0;
}
if (@available(macOS 11.3, iOS 14.5, tvOS 14.5, *)) {
GCController.shouldMonitorBackgroundEvents = YES;
}
/* For whatever reason, this always returns an empty array on
macOS 11.0.1 */
for (GCController *controller in [GCController controllers]) {