Adding Elgato Keylight

Code style changes by Adam Honse <calcprogrammer1@gmail.com>

Controllers/ElgatoKeyLightController/ElgatoKeyLightController.cpp

@@ -0,0 +1,110 @@
+/*---------------------------------------------------------*\
+|  Driver for Elgato Key Light                              |
+|                                                           |
+|  Monks (imtherealestmonkey@gmail.com),   11/03/2021       |
+\*---------------------------------------------------------*/
+
+#include "ElgatoKeyLightController.h"
+#include "json.hpp"
+#include <iostream>
+
+using json = nlohmann::json;
+
+ElgatoKeyLightController::ElgatoKeyLightController(std::string ip)
+{
+    /*-----------------------------------------------------------------*\
+    | Fill in location string with device's IP address                  |
+    \*-----------------------------------------------------------------*/
+    location    = "IP: " + ip;
+
+    /*-----------------------------------------------------------------*\
+    | Open a TCP client sending to the device's IP, port 9123          |
+    \*-----------------------------------------------------------------*/
+    port.tcp_client(ip.c_str(), "9123");
+}
+
+ElgatoKeyLightController::~ElgatoKeyLightController()
+{
+}
+
+std::string ElgatoKeyLightController::GetLocation()
+{
+    return(location);
+}
+
+std::string ElgatoKeyLightController::GetName()
+{
+    return("Elgato KeyLight");
+}
+
+std::string ElgatoKeyLightController::GetVersion()
+{
+    return("");
+}
+
+std::string ElgatoKeyLightController::GetManufacturer()
+{
+    return("Elgato");
+}
+
+std::string ElgatoKeyLightController::GetUniqueID()
+{
+    return("");
+}
+
+void ElgatoKeyLightController::SetColor(hsv_t hsv_color)
+{
+    // Weird elgato color format
+    int k_value = HSVToK(hsv_color.hue);
+
+    port.tcp_client_connect();
+    std::string buf = GetRequest(hsv_color.value, k_value);
+    port.tcp_client_write((char *)buf.c_str(), buf.length() + 1);
+
+    port.tcp_close();
+}
+
+std::string ElgatoKeyLightController::GetRequest(int brightness, int temperature)
+{
+    json command;
+
+    command["numberOfLights"] = 1;
+
+    auto lights = json::array();
+    lights.push_back(json::object({ {"on", 1}, {"temperature", temperature}, {"brightness", brightness}}));
+    command["lights"] = lights;
+
+    std::string command_str = command.dump();
+    std::string buf = "PUT /elgato/lights HTTP/1.1\r\nContent-Type: application/json\r\nContent-Length: " +
+                      std::to_string(command_str.length()) +
+                      "\r\nConnection: close\r\n\r\n" + command_str + "\r\n\r\n";
+    return(buf);
+}
+
+int ElgatoKeyLightController::HSVToK(int hue)
+{
+    int k_value;
+
+    if(hue <= 60 && hue >= 0)
+    {
+        k_value = 2900;
+    }
+    else if(hue >= 61 && hue <= 120)
+    {
+        k_value = 4000;
+    }
+    else if(hue >= 121 && hue <= 180)
+    {
+        k_value = 5000;
+    }
+    else if(hue >= 181 && hue <= 240)
+    {
+        k_value = 6000;
+    }
+    else
+    {
+        k_value = 7000;
+    }
+
+    return k_value;
+}