mirror of
https://github.com/hyperion-project/hyperion.ng.git
synced 2023-10-10 13:36:59 +02:00
155 lines
4.8 KiB
C++
Executable File
155 lines
4.8 KiB
C++
Executable File
// Local-Hyperion includes
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#include "LedDevicePhilipsHue.h"
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// jsoncpp includes
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#include <json/json.h>
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// qt includes
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#include <QtCore/qmath.h>
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#include <QUrl>
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#include <QHttpRequestHeader>
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#include <QEventLoop>
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LedDevicePhilipsHue::LedDevicePhilipsHue(const std::string& output) :
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host(output.c_str()), username("newdeveloper") {
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http = new QHttp(host);
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timer.setInterval(1000);
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timer.setSingleShot(true);
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connect(&timer, SIGNAL(timeout()), this, SLOT(restoreStates()()));
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}
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LedDevicePhilipsHue::~LedDevicePhilipsHue() {
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delete http;
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}
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int LedDevicePhilipsHue::write(const std::vector<ColorRgb> & ledValues) {
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// Save light states if not done before.
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if (!statesSaved()) {
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saveStates(ledValues.size());
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}
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// Iterate through colors and set light states.
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unsigned int lightId = 1;
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for (const ColorRgb& color : ledValues) {
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float x, y, b;
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// Scale colors from [0, 255] to [0, 1] and convert to xy space.
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rgbToXYBrightness(color.red / 255.0f, color.green / 255.0f, color.blue / 255.0f, x, y, b);
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// Send adjust color command in JSON format.
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put(getStateRoute(lightId), QString("{\"xy\": [%1, %2]}").arg(x).arg(y));
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// Send brightness color command in JSON format.
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put(getStateRoute(lightId), QString("{\"bri\": %1}").arg(qRound(b * 255.0f)));
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// Next light id.
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lightId++;
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}
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timer.start();
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return 0;
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}
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int LedDevicePhilipsHue::switchOff() {
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timer.stop();
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// If light states have been saved before, ...
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if (statesSaved()) {
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// ... restore them.
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restoreStates();
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}
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return 0;
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}
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void LedDevicePhilipsHue::put(QString route, QString content) {
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QString url = QString("/api/%1/%2").arg(username).arg(route);
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QHttpRequestHeader header("PUT", url);
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header.setValue("Host", host);
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header.setValue("Accept-Encoding", "identity");
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header.setValue("Connection", "keep-alive");
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header.setValue("Content-Length", QString("%1").arg(content.size()));
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QEventLoop loop;
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// Connect requestFinished signal to quit slot of the loop.
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loop.connect(http, SIGNAL(requestFinished(int, bool)), SLOT(quit()));
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// Perfrom request
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http->request(header, content.toAscii());
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// Go into the loop until the request is finished.
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loop.exec();
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}
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QByteArray LedDevicePhilipsHue::get(QString route) {
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QString url = QString("/api/%1/%2").arg(username).arg(route);
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// Event loop to block until request finished.
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QEventLoop loop;
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// Connect requestFinished signal to quit slot of the loop.
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loop.connect(http, SIGNAL(requestFinished(int, bool)), SLOT(quit()));
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// Perfrom request
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http->get(url);
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// Go into the loop until the request is finished.
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loop.exec();
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// Read all data of the response.
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return http->readAll();
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}
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QString LedDevicePhilipsHue::getStateRoute(unsigned int lightId) {
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return QString("lights/%1/state").arg(lightId);
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}
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QString LedDevicePhilipsHue::getRoute(unsigned int lightId) {
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return QString("lights/%1").arg(lightId);
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}
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void LedDevicePhilipsHue::saveStates(unsigned int nLights) {
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// Clear saved light states.
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states.clear();
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// Use json parser to parse reponse.
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Json::Reader reader;
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Json::FastWriter writer;
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// Iterate lights.
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for (unsigned int i = 0; i < nLights; i++) {
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// Read the response.
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QByteArray response = get(getRoute(i + 1));
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// Parse JSON.
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Json::Value json;
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if (!reader.parse(QString(response).toStdString(), json)) {
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// Error occured, break loop.
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break;
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}
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// Save state object values which are subject to change.
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Json::Value state(Json::objectValue);
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state["xy"] = json["state"]["xy"];
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state["bri"] = json["state"]["bri"];
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// Save state object.
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states.push_back(QString(writer.write(state).c_str()).trimmed());
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}
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}
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void LedDevicePhilipsHue::restoreStates() {
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unsigned int lightId = 1;
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for (QString state : states) {
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put(getStateRoute(lightId), state);
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lightId++;
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}
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// Clear saved light states.
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states.clear();
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}
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bool LedDevicePhilipsHue::statesSaved() {
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return !states.empty();
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}
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void LedDevicePhilipsHue::rgbToXYBrightness(float red, float green, float blue, float& x, float& y, float& brightness) {
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// Apply gamma correction.
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red = (red > 0.04045f) ? qPow((red + 0.055f) / (1.0f + 0.055f), 2.4f) : (red / 12.92f);
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green = (green > 0.04045f) ? qPow((green + 0.055f) / (1.0f + 0.055f), 2.4f) : (green / 12.92f);
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blue = (blue > 0.04045f) ? qPow((blue + 0.055f) / (1.0f + 0.055f), 2.4f) : (blue / 12.92f);
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// Convert to XYZ space.
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float X = red * 0.649926f + green * 0.103455f + blue * 0.197109f;
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float Y = red * 0.234327f + green * 0.743075f + blue * 0.022598f;
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float Z = red * 0.0000000f + green * 0.053077f + blue * 1.035763f;
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// Convert to x,y space.
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x = X / (X + Y + Z);
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y = Y / (X + Y + Z);
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if (isnan(x)) {
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x = 0.0f;
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}
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if (isnan(y)) {
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y = 0.0f;
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}
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// Brightness is simply Y in the XYZ space.
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brightness = Y;
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}
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