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