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/AliOS-Things-master/components/SDL2/src/joystick/bsd/
A DSDL_sysjoystick.c352 struct usb_string_desc usd; local
409 usd.usd_string_index = USB_LANGUAGE_TABLE;
410 usd.usd_language_id = 0;
411 if (ioctl(fd, USB_GET_STRING_DESC, &usd) == -1 || usd.usd_desc.bLength < 4) {
412 usd.usd_language_id = 0;
414 usd.usd_language_id = UGETW(usd.usd_desc.bString[0]);
417 usd.usd_string_index = udd.iProduct;
418 if (ioctl(fd, USB_GET_STRING_DESC, &usd) == 0) {
422 for (i = 0; i < (usd.usd_desc.bLength >> 1) - 1 && i < sizeof(str) - 1; i++) {
423 str[i] = UGETW(usd.usd_desc.bString[i]);

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