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LumaOps release export
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/*---------------------------------------------------------*\
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| RazerKrakenV4Controller.cpp |
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| Driver for Razer devices with 64-byte report |
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| Adam Honse (CalcProgrammer1) 21 Oct 2025 |
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| This file is part of the OpenRGB project |
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| SPDX-License-Identifier: GPL-2.0-or-later |
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\*---------------------------------------------------------*/
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#include <cstring>
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#include "RazerKrakenV4Controller.h"
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#include "RazerDevices.h"
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using namespace std::chrono_literals;
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RazerKrakenV4Controller::RazerKrakenV4Controller(hid_device* dev_handle, const char* path, unsigned short pid, std::string dev_name)
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{
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dev = dev_handle;
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dev_pid = pid;
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location = path;
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name = dev_name;
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/*-----------------------------------------------------*\
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| Loop through all known devices to look for a name |
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| match |
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\*-----------------------------------------------------*/
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for(unsigned int i = 0; i < RAZER_NUM_DEVICES; i++)
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{
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if(device_list[i]->pid == dev_pid)
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{
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/*---------------------------------------------*\
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| Set device ID |
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\*---------------------------------------------*/
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device_index = i;
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}
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}
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/*-----------------------------------------------------*\
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| Determine matrix type for device |
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\*-----------------------------------------------------*/
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matrix_type = device_list[device_index]->matrix_type;
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/*-----------------------------------------------------*\
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| All Kraken V4 devices use 0x02 for report and |
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| response index |
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\*-----------------------------------------------------*/
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report_index = 0x02;
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response_index = 0x02;
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/*-----------------------------------------------------*\
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| Determine transaction ID for device |
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\*-----------------------------------------------------*/
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dev_transaction_id = device_list[device_index]->transaction_id;
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/*-----------------------------------------------------*\
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| Determine wireless flag for device |
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\*-----------------------------------------------------*/
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switch(dev_pid)
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{
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case RAZER_KRAKEN_V4_WIRELESS_PID:
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case RAZER_KRAKEN_KITTY_V3_PRO_WIRELESS_PID:
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dev_wireless_flag = 0x80;
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break;
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default:
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dev_wireless_flag = 0x00;
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break;
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}
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}
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RazerKrakenV4Controller::~RazerKrakenV4Controller()
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{
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hid_close(dev);
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}
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std::string RazerKrakenV4Controller::GetName()
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{
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return(name);
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}
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unsigned int RazerKrakenV4Controller::GetDeviceIndex()
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{
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return(device_index);
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}
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device_type RazerKrakenV4Controller::GetDeviceType()
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{
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return(device_list[device_index]->type);
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}
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std::string RazerKrakenV4Controller::GetDeviceLocation()
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{
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return("HID: " + location);
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}
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std::string RazerKrakenV4Controller::GetFirmwareString()
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{
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return(razer_get_firmware());
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}
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std::string RazerKrakenV4Controller::GetSerialString()
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{
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return(razer_get_serial());
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}
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unsigned char RazerKrakenV4Controller::GetMaxBrightness()
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{
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/*-----------------------------------------------------*\
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| Max brightness for most devices is 0xFF (255) |
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| Add PIDs only for devices that use 0x64 (100) |
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| or any another arbitrary value |
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\*-----------------------------------------------------*/
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unsigned char max_brightness = 255;
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return(max_brightness);
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}
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void RazerKrakenV4Controller::SetDirect(RGBColor* colors)
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{
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struct razer_kraken_v4_report report = razer_kraken_v4_create_report(0x0F, 0x03, (5 + (3 * device_list[device_index]->cols)));
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report.arguments[2] = 0;
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report.arguments[3] = 0;
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report.arguments[4] = device_list[device_index]->cols - 1;
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for(unsigned int led_idx = 0; led_idx < device_list[device_index]->cols; led_idx++)
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{
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report.arguments[5 + (led_idx * 3)] = RGBGetRValue(colors[led_idx]);
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report.arguments[6 + (led_idx * 3)] = RGBGetGValue(colors[led_idx]);
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report.arguments[7 + (led_idx * 3)] = RGBGetBValue(colors[led_idx]);
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}
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razer_usb_send(&report);
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}
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void RazerKrakenV4Controller::SetBrightness(unsigned char brightness)
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{
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struct razer_kraken_v4_report report = razer_kraken_v4_create_report(0x00, 0x00, 0x05);
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report.arguments[0] = RAZER_KRAKEN_V4_CMD_LIGHTING_SET_BRIGHTNESS;
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report.arguments[2] = 0x01;
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report.arguments[3] = brightness;
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razer_usb_send(&report);
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}
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void RazerKrakenV4Controller::SetModeWave()
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{
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struct razer_kraken_v4_report report = razer_kraken_v4_create_report(0x00, 0x00, 0x05);
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report.arguments[0] = RAZER_KRAKEN_V4_CMD_LIGHTING_SET_MODE;
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report.arguments[2] = 0x01;
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report.arguments[3] = 0x04;
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razer_usb_send(&report);
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}
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unsigned char RazerKrakenV4Controller::razer_kraken_v4_calculate_crc(razer_kraken_v4_report* report)
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{
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/*-----------------------------------------------------*\
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| The second to last byte of report is a simple |
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| checksum. Just xor all bytes up with overflow and |
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| you are done |
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\*-----------------------------------------------------*/
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unsigned char crc = 0;
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unsigned char* report_ptr = (unsigned char*)report;
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for(unsigned int i = 0; i < 61; i++)
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{
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crc ^= report_ptr[i];
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}
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return crc;
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}
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razer_kraken_v4_report RazerKrakenV4Controller::razer_kraken_v4_create_report(unsigned char command_class, unsigned char command_id, unsigned char data_size)
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{
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razer_kraken_v4_report new_report;
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/*-----------------------------------------------------*\
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| Zero out the new report |
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\*-----------------------------------------------------*/
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memset(&new_report, 0, sizeof(razer_kraken_v4_report));
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/*-----------------------------------------------------*\
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| Fill in the new report with the given parameters |
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\*-----------------------------------------------------*/
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new_report.report_id = report_index;
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new_report.status = 0x00;
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new_report.transaction_id = dev_transaction_id;
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new_report.remaining_packets = 0x00;
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new_report.protocol_type = 0x00;
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new_report.data_size = data_size;
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new_report.command_class = command_class;
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new_report.command_id = command_id;
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new_report.wireless_flag = dev_wireless_flag;
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return new_report;
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}
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razer_kraken_v4_report RazerKrakenV4Controller::razer_kraken_v4_create_response()
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{
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razer_kraken_v4_report new_report;
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/*-----------------------------------------------------*\
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| Zero out the new report |
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\*-----------------------------------------------------*/
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memset(&new_report, 0, sizeof(razer_kraken_v4_report));
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/*-----------------------------------------------------*\
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| Fill in the new report with the given parameters |
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\*-----------------------------------------------------*/
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new_report.report_id = response_index;
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new_report.status = 0x00;
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new_report.transaction_id = dev_transaction_id;
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new_report.remaining_packets = 0x00;
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new_report.protocol_type = 0x00;
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new_report.command_class = 0x00;
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new_report.command_id = 0x00;
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new_report.data_size = 0x00;
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new_report.wireless_flag = dev_wireless_flag;
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return new_report;
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}
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std::string RazerKrakenV4Controller::razer_get_firmware()
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{
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std::string firmware_string = "";
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struct razer_kraken_v4_report report = razer_kraken_v4_create_report(0x00, 0x00, 0x04);
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struct razer_kraken_v4_report response_report = razer_kraken_v4_create_response();
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report.arguments[0] = RAZER_KRAKEN_V4_CMD_GET_FIRMWARE_INFO;
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std::this_thread::sleep_for(2ms);
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razer_usb_send(&report);
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std::this_thread::sleep_for(5ms);
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razer_usb_receive(&response_report);
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firmware_string = "v" + std::to_string(response_report.arguments[3]) + "." + std::to_string(response_report.arguments[4]) + "." + std::to_string(response_report.arguments[5]) + "." + std::to_string(response_report.arguments[6]);
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return firmware_string;
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}
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std::string RazerKrakenV4Controller::razer_get_serial()
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{
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char serial_string[16];
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struct razer_kraken_v4_report report = razer_kraken_v4_create_report(0x00, 0x00, 0x04);
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struct razer_kraken_v4_report response_report = razer_kraken_v4_create_response();
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report.arguments[0] = RAZER_KRAKEN_V4_CMD_GET_SERIAL;
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std::this_thread::sleep_for(2ms);
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razer_usb_send(&report);
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std::this_thread::sleep_for(5ms);
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razer_usb_receive(&response_report);
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memcpy(&serial_string[0], &response_report.arguments[3], 16);
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serial_string[15] = '\0';
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for(size_t i = 0; i < 15; i++)
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{
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if(serial_string[i] < 30 || serial_string[i] > 126)
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{
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serial_string[i] = ' ';
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}
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}
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std::string ret_string = serial_string;
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return ret_string;
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}
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int RazerKrakenV4Controller::razer_usb_receive(razer_kraken_v4_report* report)
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{
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report->crc = razer_kraken_v4_calculate_crc(report);
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return hid_read(dev, (unsigned char *)report, sizeof(*report));
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}
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int RazerKrakenV4Controller::razer_usb_send(razer_kraken_v4_report* report)
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{
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return hid_write(dev, (unsigned char *)report, sizeof(*report));
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}
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