eden-emu/SDL
19
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Added the CRC of the joystick name to the GUID

Browse source 
This will make it possible to have mappings for different controllers
that have the same VID/PID. This happens frequently with some generic
controller boards that have been reused in many products.

Fixes https://github.com/libsdl-org/SDL/issues/6004
This commit is contained in:
Sam Lantinga 2022-08-22 16:46:55 -07:00
parent 20715fa014
commit c1e0873940
21 changed files with 179 additions and 117 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/joystick/darwin/SDL_iokitjoystick.c
View file

@ -504,7 +504,7 @@ GetDeviceInfo(IOHIDDeviceRef hidDevice, recDevice *pDevice)
if (vendor && product) {
*guid16++ = SDL_SwapLE16(SDL_HARDWARE_BUS_USB);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(SDL_crc16(0, pDevice->product, SDL_strlen(pDevice->product)));
*guid16++ = SDL_SwapLE16((Uint16)vendor);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16((Uint16)product);
@ -513,7 +513,7 @@ GetDeviceInfo(IOHIDDeviceRef hidDevice, recDevice *pDevice)
*guid16++ = 0;
} else {
*guid16++ = SDL_SwapLE16(SDL_HARDWARE_BUS_BLUETOOTH);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(SDL_crc16(0, pDevice->product, SDL_strlen(pDevice->product)));
SDL_strlcpy((char*)guid16, pDevice->product, sizeof(pDevice->guid.data) - 4);
}