1 /** |
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2 * cadMousePro |
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3 * Copyright © 2019 František Kučera (Frantovo.cz, GlobalCode.info) |
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4 * |
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5 * This program is free software: you can redistribute it and/or modify |
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6 * it under the terms of the GNU General Public License as published by |
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7 * the Free Software Foundation, either version 3 of the License, or |
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8 * (at your option) any later version. |
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9 * |
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10 * This program is distributed in the hope that it will be useful, |
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 * GNU General Public License for more details. |
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14 * |
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15 * You should have received a copy of the GNU General Public License |
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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17 */ |
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18 #pragma once |
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19 |
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20 #include <array> |
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21 #include <vector> |
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22 #include <memory> |
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23 #include <unistd.h> |
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24 #include <cassert> |
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25 |
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26 #include <hidapi/hidapi.h> |
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27 |
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28 using Packet = std::vector<uint8_t>; |
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29 static_assert(sizeof (uint8_t) == sizeof (unsigned char)); // unsigned char is used in the HID API library |
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30 |
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31 class HIDException { |
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32 private: |
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33 std::wstring message; |
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34 public: |
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35 |
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36 HIDException(std::wstring message) : message(message) { |
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37 } |
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38 |
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39 virtual ~HIDException() { |
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40 } |
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41 |
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42 const std::wstring getMessage() const { |
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43 return message; |
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44 } |
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45 |
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46 }; |
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47 |
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48 class HIDDevice { |
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49 private: |
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50 std::shared_ptr<hid_device> handle; |
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51 |
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52 public: |
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53 |
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54 HIDDevice(unsigned short vendorId, unsigned short productId, const wchar_t *serialNumber) { |
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55 int initError = hid_init(); // TODO: move to HIDContext class? |
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56 if (initError) throw HIDException(L"Unable to init HID API."); |
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57 handle.reset(hid_open(vendorId, productId, serialNumber), hid_close); |
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58 if (handle == nullptr) throw HIDException(L"Unable to open HID device. Are you root? Is the device present?"); |
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59 } |
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60 |
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61 virtual ~HIDDevice() { |
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62 hid_exit(); // TODO: move to HIDContext class? |
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63 } |
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64 |
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65 const std::wstring getManufacturerName() const { |
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66 std::array<wchar_t, 200 > buffer; |
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67 int error = hid_get_manufacturer_string(handle.get(), buffer.data(), buffer.size()); |
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68 if (error) throw HIDException(L"Unable to get manufacturer name."); |
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69 return buffer.data(); |
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70 } |
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71 |
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72 const std::wstring getProductName() const { |
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73 std::array<wchar_t, 200 > buffer; |
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74 int error = hid_get_product_string(handle.get(), buffer.data(), buffer.size()); |
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75 if (error) throw HIDException(L"Unable to get product name."); |
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76 return buffer.data(); |
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77 } |
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78 |
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79 const std::wstring getSerialNumber() const { |
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80 std::array<wchar_t, 200 > buffer; |
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81 int error = hid_get_serial_number_string(handle.get(), buffer.data(), buffer.size()); |
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82 if (error) throw HIDException(L"Unable to get serial number."); |
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83 return buffer.data(); |
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84 } |
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85 |
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86 void sendFeatureReport(Packet data) { |
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87 int written = hid_send_feature_report(handle.get(), data.data(), data.size()); |
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88 if (written < 0) throw HIDException(L"Unable to send feature report."); |
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89 } |
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90 |
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91 }; |
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