mirrors/SDL
1
0
Fork 0
mirror of https://github.com/libsdl-org/SDL.git synced 2025-10-04 00:46:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

41
src/joystick/hidapi/SDL_hidapijoystick.c
View File

@@ -603,26 +603,6 @@ HIDAPI_AddDevice(const struct SDL_hid_device_info *info, int num_children, SDL_H
device->interface_protocol = info->interface_protocol;
device->usage_page = info->usage_page;
device->usage = info->usage;
{
/* FIXME: Is there any way to tell whether this is a Bluetooth device? */
const Uint16 vendor = device->vendor_id;
const Uint16 product = device->product_id;
const Uint16 version = device->version;
Uint16 *guid16 = (Uint16 *)device->guid.data;
*guid16++ = SDL_SwapLE16(SDL_HARDWARE_BUS_USB);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(vendor);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(product);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(version);
*guid16++ = 0;
/* Note that this is a HIDAPI device for special handling elsewhere */
device->guid.data[14] = 'h';
device->guid.data[15] = 0;
}
device->dev_lock = SDL_CreateMutex();
/* Need the device name before getting the driver to know whether to ignore this device */
@@ -654,6 +634,27 @@ HIDAPI_AddDevice(const struct SDL_hid_device_info *info, int num_children, SDL_H
}
}
{
/* FIXME: Is there any way to tell whether this is a Bluetooth device? */
const Uint16 vendor = device->vendor_id;
const Uint16 product = device->product_id;
const Uint16 version = device->version;
Uint16 *guid16 = (Uint16 *)device->guid.data;
*guid16++ = SDL_SwapLE16(SDL_HARDWARE_BUS_USB);
*guid16++ = SDL_SwapLE16(SDL_crc16(0, device->name, SDL_strlen(device->name)));
*guid16++ = SDL_SwapLE16(vendor);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(product);
*guid16++ = 0;
*guid16++ = SDL_SwapLE16(version);
*guid16++ = 0;
/* Note that this is a HIDAPI device for special handling elsewhere */
device->guid.data[14] = 'h';
device->guid.data[15] = 0;
}
if (num_children > 0) {
int i;