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#pragma once
#include "../common.h"
#include "../light_hal.h"
#include "color_instant_handler.h"
#include "color_transition_handler.h"
#include "esphome/components/ledc/ledc_output.h"
namespace esphome {
namespace yeelight {
namespace bs2 {
/**
* A LightOutput class for the Yeelight Bedside Lamp 2.
*
* The function of this class is to translate a required light state
* into actual physicial GPIO output signals to drive the device's LED
* circuitry. It forms the glue between the physical device and the
* logical light color input.
*/
class YeelightBS2LightOutput : public Component, public light::LightOutput {
public:
void set_parent(LightHAL *light) { light_ = light; }
/**
* Returns a LightTraits object, which is used to explain to the outside
* world (e.g. Home Assistant) what features are supported by this device.
*/
light::LightTraits get_traits() override
{
auto traits = light::LightTraits();
traits.set_supports_rgb(true);
traits.set_supports_color_temperature(true);
traits.set_supports_brightness(true);
traits.set_supports_rgb_white_value(false);
traits.set_supports_color_interlock(true);
traits.set_min_mireds(MIRED_MIN);
traits.set_max_mireds(MIRED_MAX);
return traits;
}
void add_on_state_callback(std::function<void(light::LightColorValues)> &&callback) {
state_callback_.add(std::move(callback));
}
/**
* Applies a requested light state to the physicial GPIO outputs.
*/
void write_state(light::LightState *state)
{
auto values = state->current_values;
// The color must either be set instantly, or the color is
// transitioning to an end color. The transition handler will do its
// own inspection to see if a transition is currently active or not.
// Based on the outcome, use either the instant or transition handler.
GPIOOutputs *delegate;
if (transition_handler_->set_light_color_values(values)) {
delegate = transition_handler_;
state_callback_.call(transition_handler_->get_end_values());
} else {
instant_handler_->set_light_color_values(values);
delegate = instant_handler_;
state_callback_.call(values);
}
// Note: one might think that it is more logical to turn on the LED
// circuitry master switch after setting the individual channels,
// but this is the order that was used by the original firmware. I
// tried to stay as close as possible to the original behavior, so
// that's why these GPIOs are turned on at this point.
if (values.get_state() != 0)
light_->turn_on();
// Apply the current GPIO output levels from the selected handler.
light_->set_rgbw(
delegate->red,
delegate->green,
delegate->blue,
delegate->white
);
if (values.get_state() == 0)
light_->turn_off();
}
protected:
LightHAL *light_;
ColorTransitionHandler *transition_handler_;
ColorInstantHandler *instant_handler_ = new ColorInstantHandler();
CallbackManager<void(light::LightColorValues)> state_callback_{};
friend class YeelightBS2LightState;
/**
* Called by the YeelightBS2LightState class, to set the object that can be
* used to access the protected LightTransformer data from the LightState
* object.
*/
void set_transformer_inspector(LightStateTransformerInspector *exposer) {
transition_handler_ = new ColorTransitionHandler(exposer);
}
};
/**
* This custom LightState class is used to provide access to the protected
* LightTranformer information in the LightState class.
*
* This class is used by the ColorTransitionHandler class to inspect if
* an ongoing light color transition is active in a LightState object.
*/
class YeelightBS2LightState : public light::LightState, public LightStateTransformerInspector
{
public:
YeelightBS2LightState(const std::string &name, YeelightBS2LightOutput *output) : light::LightState(name, output) {
output->set_transformer_inspector(this);
}
bool is_active() { return transformer_ != nullptr; }
bool is_transition() { return transformer_->is_transition(); }
light::LightColorValues get_end_values() { return transformer_->get_end_values(); }
float get_progress() { return transformer_->get_progress(); }
};
} // namespace bs2
} // namespace yeelight
} // namespace esphome