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Added SDL_HINT_HIDAPI_IGNORE_DEVICES to specify devices that should be ignored in SDL_hid_enumerate()

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This commit is contained in:
Sam Lantinga
2022-11-05 16:44:52 -07:00
parent 297ecb706d
commit 15a9890919
7 changed files with 85 additions and 1 deletions
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13
src/hidapi/mac/hid.c
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@@ -21,6 +21,8 @@
********************************************************/
#include "../../SDL_internal.h"
#include "SDL_hints.h"
/* See Apple Technical Note TN2187 for details on IOHidManager. */
#include <IOKit/hid/IOHIDManager.h>
@@ -517,6 +519,7 @@ struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id,
CFSetRef device_set;
IOHIDDeviceRef *device_array;
int i;
const char *hint = SDL_GetHint(SDL_HINT_HIDAPI_IGNORE_DEVICES);
/* Set up the HID Manager if it hasn't been done */
if (hid_init() < 0)
@@ -567,6 +570,16 @@ struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id,
dev_vid = get_vendor_id(dev);
dev_pid = get_product_id(dev);
/* See if there are any devices we should skip in enumeration */
if (hint) {
char vendor_match[16], product_match[16];
SDL_snprintf(vendor_match, sizeof(vendor_match), "0x%.4x/0x0000", dev_vid);
SDL_snprintf(product_match, sizeof(product_match), "0x%.4x/0x%.4x", dev_vid, dev_pid);
if (SDL_strcasestr(hint, vendor_match) || SDL_strcasestr(hint, product_match)) {
continue;
}
}
/* Check the VID/PID against the arguments */
if ((vendor_id == 0x0 || dev_vid == vendor_id) &&
(product_id == 0x0 || dev_pid == product_id)) {