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/*
* The MIT License (MIT)
*
* Copyright (c) 2024 HiFiPhile
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include "quirk_os_guessing.h"
static tusb_desc_type_t desc_req_buf[2];
static int desc_req_idx = 0;
// Place at the start of tud_descriptor_device_cb()
void quirk_os_guessing_desc_device_cb() {
desc_req_idx = 0;
}
// Place at the start of tud_descriptor_configuration_cb()
void quirk_os_guessing_desc_configuration_cb() {
// Skip redundant request
if (desc_req_idx == 0 || (desc_req_idx == 1 && desc_req_buf[0] != TUSB_DESC_CONFIGURATION)) {
desc_req_buf[desc_req_idx++] = TUSB_DESC_CONFIGURATION;
}
}
// Place at the start of tud_descriptor_bos_cb()
void quirk_os_guessing_desc_bos_cb() {
// Skip redundant request
if (desc_req_idx == 0 || (desc_req_idx == 1 && desc_req_buf[0] != TUSB_DESC_BOS)) {
desc_req_buf[desc_req_idx++] = TUSB_DESC_BOS;
}
}
// Place at the start of tud_descriptor_string_cb()
void quirk_os_guessing_desc_string_cb() {
// Skip redundant request
if (desc_req_idx == 0 || (desc_req_idx == 1 && desc_req_buf[0] != TUSB_DESC_STRING)) {
desc_req_buf[desc_req_idx++] = TUSB_DESC_STRING;
}
}
// Each OS request descriptors differently:
// Windows 10 - 11
// Device Desc
// Config Desc
// BOS Desc
// String Desc
// Linux 3.16 - 6.8
// Device Desc
// BOS Desc
// Config Desc
// String Desc
// OS X Ventura - Sonoma
// Device Desc
// String Desc
// Config Desc || BOS Desc
// BOS Desc || Config Desc
quirk_os_guessing_t quirk_os_guessing_get(void) {
if (desc_req_idx < 2) {
return QUIRK_OS_GUESSING_UNKNOWN;
}
if (desc_req_buf[0] == TUSB_DESC_BOS && desc_req_buf[1] == TUSB_DESC_CONFIGURATION) {
return QUIRK_OS_GUESSING_LINUX;
} else if (desc_req_buf[0] == TUSB_DESC_CONFIGURATION && desc_req_buf[1] == TUSB_DESC_BOS) {
return QUIRK_OS_GUESSING_WINDOWS;
} else if (desc_req_buf[0] == TUSB_DESC_STRING && (desc_req_buf[1] == TUSB_DESC_BOS || desc_req_buf[1] == TUSB_DESC_CONFIGURATION)) {
return QUIRK_OS_GUESSING_OSX;
}
return QUIRK_OS_GUESSING_UNKNOWN;
}
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