hyperion.ng/libsrc/leddevice/LedDevicePhilipsHue.h

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#pragma once
// STL includes
#include <string>
// Qt includes
#include <QObject>
#include <QString>
#include <QHttp>
#include <QTimer>
// Leddevice includes
#include <leddevice/LedDevice.h>
/**
* A color point in the color space of the hue system.
*/
struct CiColor {
/// X component.
float x;
/// Y component.
float y;
/// The brightness.
float bri;
};
bool operator==(CiColor p1, CiColor p2);
bool operator!=(CiColor p1, CiColor p2);
/**
* Color triangle to define an available color space for the hue lamps.
*/
struct CiColorTriangle {
CiColor red, green, blue;
};
/**
* Simple class to hold the id, the latest color, the color space and the original state.
*/
class PhilipsHueLamp {
public:
unsigned int id;
CiColor black;
CiColor color;
CiColorTriangle colorSpace;
QString originalState;
///
/// Constructs the lamp.
///
/// @param id the light id
///
/// @param originalState the json string of the original state
///
/// @param modelId the model id of the hue lamp which is used to determine the color space
///
PhilipsHueLamp(unsigned int id, QString originalState, QString modelId);
///
/// Converts an RGB color to the Hue xy color space and brightness.
/// https://github.com/PhilipsHue/PhilipsHueSDK-iOS-OSX/blob/master/ApplicationDesignNotes/RGB%20to%20xy%20Color%20conversion.md
///
/// @param red the red component in [0, 1]
///
/// @param green the green component in [0, 1]
///
/// @param blue the blue component in [0, 1]
///
/// @return color point
///
CiColor rgbToCiColor(float red, float green, float blue);
///
/// @param p the color point to check
///
/// @return true if the color point is covered by the lamp color space
///
bool isPointInLampsReach(CiColor p);
///
/// @param p1 point one
///
/// @param p2 point tow
///
/// @return the cross product between p1 and p2
///
float crossProduct(CiColor p1, CiColor p2);
///
/// @param a reference point one
///
/// @param b reference point two
///
/// @param p the point to which the closest point is to be found
///
/// @return the closest color point of p to a and b
///
CiColor getClosestPointToPoint(CiColor a, CiColor b, CiColor p);
///
/// @param p1 point one
///
/// @param p2 point tow
///
/// @return the distance between the two points
///
float getDistanceBetweenTwoPoints(CiColor p1, CiColor p2);
};
/**
* Implementation for the Philips Hue system.
*
* To use set the device to "philipshue".
* Uses the official Philips Hue API (http://developers.meethue.com).
* Framegrabber must be limited to 10 Hz / numer of lights to avoid rate limitation by the hue bridge.
* Create a new API user name "newdeveloper" on the bridge (http://developers.meethue.com/gettingstarted.html)
*
* @author ntim (github), bimsarck (github)
*/
class LedDevicePhilipsHue: public QObject, public LedDevice {
Q_OBJECT
public:
///
/// Constructs the device.
///
/// @param output the ip address of the bridge
///
/// @param username username of the hue bridge (default: newdeveloper)
///
/// @param switchOffOnBlack kill lights for black (default: false)
///
/// @param transitiontime the time duration a light change takes in multiples of 100 ms (default: 400 ms).
///
LedDevicePhilipsHue(const std::string& output, const std::string& username = "newdeveloper", bool switchOffOnBlack =
false, int transitiontime = 1);
///
/// Destructor of this device
///
virtual ~LedDevicePhilipsHue();
///
/// Sends the given led-color values via put request to the hue system
///
/// @param ledValues The color-value per led
///
/// @return Zero on success else negative
///
virtual int write(const std::vector<ColorRgb> & ledValues);
/// Restores the original state of the leds.
virtual int switchOff();
private slots:
/// Restores the status of all lights.
void restoreStates();
private:
/// Array to save the lamps.
std::vector<PhilipsHueLamp> lamps;
/// Ip address of the bridge
QString host;
/// User name for the API ("newdeveloper")
QString username;
/// Qhttp object for sending requests.
QHttp* http;
/// Use timer to reset lights when we got into "GRABBINGMODE_OFF".
QTimer timer;
///
bool switchOffOnBlack;
/// Transition time in multiples of 100 ms.
/// The default of the Hue lights will be 400 ms, but we want to have it snapier
int transitiontime;
///
/// Sends a HTTP GET request (blocking).
///
/// @param route the URI of the request
///
/// @return response of the request
///
QByteArray get(QString route);
///
/// Sends a HTTP PUT request (non-blocking).
///
/// @param route the URI of the request
///
/// @param content content of the request
///
void put(QString route, QString content);
///
/// @param lightId the id of the hue light (starting from 1)
///
/// @return the URI of the light state for PUT requests.
///
QString getStateRoute(unsigned int lightId);
///
/// @param lightId the id of the hue light (starting from 1)
///
/// @return the URI of the light for GET requests.
///
QString getRoute(unsigned int lightId);
///
/// Queries the status of all lights and saves it.
///
/// @param nLights the number of lights
///
void saveStates(unsigned int nLights);
///
/// Switches the leds on.
///
/// @param nLights the number of lights
///
void switchOn(unsigned int nLights);
///
/// @return true if light states have been saved.
///
bool areStatesSaved();
};