This class represents the communication layer between the front-end MQTT layer and the hardware output layer. More...

#include <light_state.h>

Inheritance diagram for esphome::light::LightState:

Public Member Functions
	LightState (LightOutput *output)

LightTraits	get_traits ()

LightCall	turn_on ()
	Make a light state call.

LightCall	turn_off ()

LightCall	toggle ()

LightCall	make_call ()

void	setup () override
	Load state from preferences.

void	dump_config () override

void	loop () override

float	get_setup_priority () const override
	Shortly after HARDWARE.

void	publish_state ()
	Publish the currently active state to the frontend.

LightOutput *	get_output () const
	Get the light output associated with this object.

StringRef	get_effect_name ()
	Return the name of the current effect, or if no effect is active "None".

void	add_remote_values_listener (LightRemoteValuesListener *listener)
	Add a listener for remote values changes.

void	add_target_state_reached_listener (LightTargetStateReachedListener *listener)
	Add a listener for target state reached.

void	set_default_transition_length (uint32_t default_transition_length)
	Set the default transition length, i.e. the transition length when no transition is provided.

uint32_t	get_default_transition_length () const

void	set_flash_transition_length (uint32_t flash_transition_length)
	Set the flash transition length.

uint32_t	get_flash_transition_length () const

void	set_gamma_correct (float gamma_correct)
	Set the gamma correction factor.

float	get_gamma_correct () const

void	set_gamma_table (const uint16_t *forward)
	Set pre-computed gamma forward lookup table (256-entry uint16 PROGMEM array)

const uint16_t *	get_gamma_table () const
	Get the forward gamma lookup table.

float	gamma_correct_lut (float value) const
	Apply gamma correction using the pre-computed forward LUT.

float	gamma_uncorrect_lut (float value) const
	Reverse gamma correction by binary-searching the forward LUT.

float	gamma_correct_lut (float value) const
	No gamma LUT — passthrough.

float	gamma_uncorrect_lut (float value) const

void	set_restore_mode (LightRestoreMode restore_mode)
	Set the restore mode of this light.

void	set_initial_state (void(*callback)(LightStateRTCState &))
	Set a callback to populate the initial state defaults during setup.

bool	supports_effects ()
	Return whether the light has any effects that meet the trait requirements.

const FixedVector< LightEffect * > &	get_effects () const
	Get all effects for this light state.

void	add_effects (const std::initializer_list< LightEffect * > &effects)
	Add effects for this light state.

size_t	get_effect_count () const
	Get the total number of effects available for this light.

uint32_t	get_current_effect_index () const
	Get the currently active effect index (0 = no effect, 1+ = effect index).

uint32_t	get_effect_index (const std::string &effect_name) const
	Get effect index by name. Returns 0 if effect not found.

uint32_t	get_effect_index (const char *name, size_t len) const
	Get effect index by name (const char* overload, avoids std::string construction).

LightEffect *	get_effect_by_index (uint32_t index) const
	Get effect by index. Returns nullptr if index is invalid.

std::string	get_effect_name_by_index (uint32_t index) const
	Get effect name by index. Returns "None" for index 0, empty string for invalid index.

void	current_values_as_binary (bool *binary)
	The result of all the current_values_as_* methods have gamma correction applied.

void	current_values_as_brightness (float *brightness)

void	current_values_as_rgb (float red, float green, float *blue)

void	current_values_as_rgbw (float red, float green, float blue, float white)

void	current_values_as_rgbww (float red, float green, float blue, float cold_white, float *warm_white, bool constant_brightness=false)

void	current_values_as_rgbct (float red, float green, float blue, float color_temperature, float *white_brightness)

void	current_values_as_cwww (float cold_white, float warm_white, bool constant_brightness=false)

void	current_values_as_ct (float color_temperature, float white_brightness)

bool	is_transformer_active ()
	Indicator if a transformer (e.g.

Public Member Functions inherited from esphome::EntityBase
const StringRef &	get_name () const

bool	has_own_name () const

ESPDEPRECATED("object_id mangles names and all object_id methods are planned for removal " "(see https://github.com/esphome/backlog/issues/76). " "Now is the time to stop using object_id. If still needed, use get_object_id_to() " "which will remain available longer. get_object_id() will be removed in 2026.7.0", "2025.12.0") std uint32_t	get_object_id_hash () const

StringRef	get_object_id_to (std::span< char, OBJECT_ID_MAX_LEN > buf) const
	Get object_id with zero heap allocation For static case: returns StringRef to internal storage (buffer unused) For dynamic case: formats into buffer and returns StringRef to buffer.

size_t	write_object_id_to (char *buf, size_t buf_size) const
	Write object_id directly to buffer, returns length written (excluding null) Useful for building compound strings without intermediate buffer.

bool	is_internal () const

	ESPDEPRECATED ("set_internal() is undefined behavior at runtime — components and Home Assistant are NOT " "notified. Use the 'internal:' YAML key instead. Will be removed in 2027.3.0.", "2026.3.0") void set_internal(bool internal)

bool	is_disabled_by_default () const

EntityCategory	get_entity_category () const

const char *	get_device_class_to (std::span< char, MAX_DEVICE_CLASS_LENGTH > buffer) const

template<typename T = int>
StringRef	get_device_class_ref () const

template<typename T = int>
std::string	get_device_class () const

	ESPDEPRECATED ("Use get_device_class_to() instead. Will be removed in ESPHome 2026.9.0", "2026.3.0") StringRef get_device_class_ref() const

ESPDEPRECATED("Use get_device_class_to() instead. Will be removed in ESPHome 2026.9.0", "2026.3.0") std StringRef	get_unit_of_measurement_ref () const

ESPDEPRECATED("Use get_unit_of_measurement_ref() instead for better performance (avoids string copy). Will be " "removed in ESPHome 2026.9.0", "2026.3.0") std const char *	get_icon_to (std::span< char, MAX_ICON_LENGTH > buffer) const
	Get the unit of measurement as std::string (deprecated, prefer get_unit_of_measurement_ref())

template<typename T = int>
StringRef	get_icon_ref () const

template<typename T = int>
std::string	get_icon () const

	ESPDEPRECATED ("Use get_icon_to() instead. Will be removed in ESPHome 2026.9.0", "2026.3.0") StringRef get_icon_ref() const

ESPDEPRECATED("Use get_icon_to() instead. Will be removed in ESPHome 2026.9.0", "2026.3.0") std uint32_t	get_device_id () const

Device *	get_device () const

bool	has_state () const

void	set_has_state (bool state)

	ESPDEPRECATED ("Use make_entity_preference<T>() instead, or preferences won't be migrated. " "See https://github.com/esphome/backlog/issues/85. Will be removed in 2027.1.0.", "2026.7.0") uint32_t get_preference_hash()
	Get a unique hash for storing preferences/settings for this entity.

template<typename T >
ESPPreferenceObject	make_entity_preference (uint32_t version=0)
	Create a preference object for storing this entity's state/settings.

Public Member Functions inherited from esphome::Component
float	get_actual_setup_priority () const

void	set_setup_priority (float priority)

void	call ()

virtual void	on_shutdown ()

virtual void	on_safe_shutdown ()

virtual bool	teardown ()
	Called during teardown to allow component to gracefully finish operations.

virtual void	on_powerdown ()
	Called after teardown is complete to power down hardware.

uint8_t	get_component_state () const

void	reset_to_construction_state ()
	Reset this component back to the construction state to allow setup to run again.

bool	is_in_loop_state () const
	Check if this component has completed setup and is in the loop state.

bool	is_idle () const
	Check if this component is idle.

void	mark_failed ()
	Mark this component as failed.

	ESPDEPRECATED ("Use mark_failed(LOG_STR(\"static string literal\")) instead. Do NOT use .c_str() from temporary " "strings. Will stop working in 2026.6.0", "2025.12.0") void mark_failed(const char *message)

void	mark_failed (const LogString *message)

void	disable_loop ()
	Disable this component's loop.

void	enable_loop ()
	Enable this component's loop.

void	enable_loop_soon_any_context ()
	Thread and ISR-safe version of enable_loop() that can be called from any context.

bool	is_failed () const

bool	is_ready () const

virtual bool	can_proceed ()

bool	status_has_warning () const

bool	status_has_error () const

void	status_set_warning ()

void	status_set_warning (const char *message)

void	status_set_warning (const LogString *message)

void	status_set_error ()

	ESPDEPRECATED ("Use status_set_error(LOG_STR(\"static string literal\")) instead. Do NOT use .c_str() from temporary " "strings. Will stop working in 2026.6.0", "2025.12.0") void status_set_error(const char *message)

void	status_set_error (const LogString *message)

void	status_clear_warning ()

void	status_clear_error ()

void	status_momentary_warning (const char *name, uint32_t length=5000)
	Set warning status flag and automatically clear it after a timeout.

void	status_momentary_error (const char *name, uint32_t length=5000)
	Set error status flag and automatically clear it after a timeout.

bool	has_overridden_loop () const

const LogString *	get_component_log_str () const ESPHOME_ALWAYS_INLINE
	Get the integration where this component was declared as a LogString for logging.

bool	should_warn_of_blocking (uint32_t blocking_time)

Data Fields
LightColorValues	current_values
	The current values of the light as outputted to the light.

LightColorValues	remote_values
	The remote color values reported to the frontend.

Protected Member Functions
void	start_effect_ (uint32_t effect_index)
	Internal method to start an effect with the given index.

LightEffect *	get_active_effect_ ()
	Internal method to get the currently active effect.

void	stop_effect_ ()
	Internal method to stop the current effect (if one is active).

void	start_transition_ (const LightColorValues &target, uint32_t length, bool set_remote_values)
	Internal method to start a transition to the target color with the given length.

void	start_flash_ (const LightColorValues &target, uint32_t length, bool set_remote_values)
	Internal method to start a flash for the specified amount of time.

void	set_immediately_ (const LightColorValues &target, bool set_remote_values)
	Internal method to set the color values to target immediately (with no transition).

void	save_remote_values_ ()
	Internal method to save the current remote_values to the preferences.

void	disable_loop_if_idle_ ()
	Disable loop if neither transformer nor effect is active.

void	schedule_write_ ()
	Schedule a write to the light output and enable the loop to process it.

Protected Member Functions inherited from esphome::EntityBase
friend	void::setup ()

friend	void::original_setup ()

void	configure_entity_ (const char *name, uint32_t object_id_hash, uint32_t entity_fields)
	Combined entity setup from codegen: set name, object_id hash, entity string indices, and flags.

void	set_device_ (Device *device)

ESPPreferenceObject	make_entity_preference_ (size_t size, uint32_t version)
	Non-template helper for make_entity_preference() to avoid code bloat.

void	calc_object_id_ ()

Protected Member Functions inherited from esphome::Component
friend	void::setup ()

friend	void::original_setup ()

void	set_component_source_ (uint8_t index)
	Set where this component was loaded from for some debug messages.

virtual void	call_setup ()

void	call_dump_config_ ()

void	enable_loop_slow_path_ ()

void	set_component_state_ (uint8_t state)
	Helper to set component state (clears state bits and sets new state)

bool	set_status_flag_ (uint8_t flag)
	Helper to set a status LED flag on both this component and the app.

void	set_interval (uint32_t id, uint32_t interval, std::function< void()> &&f)
	Set an interval function with a numeric ID (zero heap allocation).

void	set_interval (InternalSchedulerID id, uint32_t interval, std::function< void()> &&f)

void	set_interval (uint32_t interval, std::function< void()> &&f)

bool	cancel_interval (uint32_t id)

bool	cancel_interval (InternalSchedulerID id)

ESPDEPRECATED("set_retry is deprecated and will be removed in 2026.8.0. Use set_timeout or set_interval instead.", "2026.2.0") void set_retry(const std	ESPDEPRECATED ("set_retry is deprecated and will be removed in 2026.8.0. Use set_timeout or set_interval instead.", "2026.2.0") void set_retry(const char *name

	ESPDEPRECATED ("set_retry is deprecated and will be removed in 2026.8.0. Use set_timeout or set_interval instead.", "2026.2.0") void set_retry(uint32_t id

	ESPDEPRECATED ("set_retry is deprecated and will be removed in 2026.8.0. Use set_timeout or set_interval instead.", "2026.2.0") void set_retry(uint32_t initial_wait_time

ESPDEPRECATED("cancel_retry is deprecated and will be removed in 2026.8.0.", "2026.2.0") bool cancel_retry(const std	ESPDEPRECATED ("cancel_retry is deprecated and will be removed in 2026.8.0.", "2026.2.0") bool cancel_retry(const char *name)

	ESPDEPRECATED ("cancel_retry is deprecated and will be removed in 2026.8.0.", "2026.2.0") bool cancel_retry(uint32_t id)

void	set_timeout (uint32_t id, uint32_t timeout, std::function< void()> &&f)
	Set a timeout function with a numeric ID (zero heap allocation).

void	set_timeout (InternalSchedulerID id, uint32_t timeout, std::function< void()> &&f)

void	set_timeout (uint32_t timeout, std::function< void()> &&f)

bool	cancel_timeout (uint32_t id)

bool	cancel_timeout (InternalSchedulerID id)

void	defer (std::function< void()> &&f)
	Defer a callback to the next loop() call.

void	defer (uint32_t id, std::function< void()> &&f)
	Defer a callback with a numeric ID (zero heap allocation)

bool	cancel_defer (uint32_t id)

void	status_clear_warning_slow_path_ ()

void	status_clear_error_slow_path_ ()

Protected Attributes
friend	LightOutput

friend	LightCall

LightOutput *	output_
	Store the output to allow effects to have more access.

std::unique_ptr< LightTransformer >	transformer_ {nullptr}
	The currently active transformer for this light (transition/flash).

FixedVector< LightEffect * >	effects_
	List of effects for this light.

ESPPreferenceObject	rtc_
	Object used to store the persisted values of the light.

std::unique_ptr< std::vector< LightRemoteValuesListener * > >	remote_values_listeners_
	Listeners for remote values changes.

std::unique_ptr< std::vector< LightTargetStateReachedListener * > >	target_state_reached_listeners_
	Listeners for target state reached.

void(*	initial_state_callback_ )(LightStateRTCState &)
	Callback to populate initial state defaults — called once during setup, then cleared.

uint32_t	active_effect_index_ {}
	Value for storing the index of the currently active effect. 0 if no effect is active.

uint32_t	default_transition_length_ {}
	Default transition length for all transitions in ms.

uint32_t	flash_transition_length_ {}
	Transition length to use for flash transitions.

float	gamma_correct_ {}
	Gamma correction factor for the light.

const uint16_t *	gamma_table_ {nullptr}

bool	next_write_ {true}
	Whether the light value should be written in the next cycle.

bool	is_transformer_active_ {false}

LightRestoreMode	restore_mode_
	Restore mode of the light.

Protected Attributes inherited from esphome::EntityBase
StringRef	name_

uint32_t	object_id_hash_ {}

Device *	device_ {}

struct esphome::EntityBase::EntityFlags	flags_

uint8_t	device_class_idx_ {}

uint8_t	uom_idx_ {}

uint8_t	icon_idx_ {}

Protected Attributes inherited from esphome::Component
ESPDEPRECATED("Use const char* or uint32_t overload instead. Removed in 2026.7.0", "2026.1.0") void set_interval(const std voi	set_interval )(const char *name, uint32_t interval, std::function< void()> &&f)
	Set an interval function with a unique name.

ESPDEPRECATED("Use const char* or uint32_t overload instead. Removed in 2026.7.0", "2026.1.0") bool cancel_interval(const std boo	cancel_interval )(const char *name)
	Cancel an interval function.

ESPDEPRECATED("set_retry is deprecated and will be removed in 2026.8.0. Use set_timeout or set_interval instead.", "2026.2.0") void set_retry(const std uint32_t	initial_wait_time

ESPDEPRECATED("set_retry is deprecated and will be removed in 2026.8.0. Use set_timeout or set_interval instead.", "2026.2.0") void set_retry(const std uint32_t uint8_t	max_attempts

ESPDEPRECATED("set_retry is deprecated and will be removed in 2026.8.0. Use set_timeout or set_interval instead.", "2026.2.0") void set_retry(const std uint32_t uint8_t std::function< RetryResult(uint8_t)> &&	f

ESPDEPRECATED("set_retry is deprecated and will be removed in 2026.8.0. Use set_timeout or set_interval instead.", "2026.2.0") void set_retry(const std uint32_t uint8_t std::function< RetryResult(uint8_t)> float	backoff_increase_factor = 1.0f)

uint32_t	initial_wait_time

uint32_t uint8_t	max_attempts

uint32_t uint8_t std::function< RetryResult(uint8_t)> &&	f

uint32_t uint8_t std::function< RetryResult(uint8_t)> float	backoff_increase_factor = 1.0f)

uint8_t	max_attempts

uint8_t std::function< RetryResult(uint8_t)> &&	f

uint8_t std::function< RetryResult(uint8_t)> float	backoff_increase_factor = 1.0f)

ESPDEPRECATED("Use const char* or uint32_t overload instead. Removed in 2026.7.0", "2026.1.0") void set_timeout(const std voi	set_timeout )(const char *name, uint32_t timeout, std::function< void()> &&f)
	Set a timeout function with a unique name.

ESPDEPRECATED("Use const char* or uint32_t overload instead. Removed in 2026.7.0", "2026.1.0") bool cancel_timeout(const std boo	cancel_timeout )(const char *name)
	Cancel a timeout function.

ESPDEPRECATED("Use const char* overload instead. Removed in 2026.7.0", "2026.1.0") void defer(const std voi	defer )(const char *name, std::function< void()> &&f)
	Defer a callback to the next loop() call.

ESPDEPRECATED("Use const char* overload instead. Removed in 2026.7.0", "2026.1.0") bool cancel_defer(const std boo	cancel_defer )(const char *name)
	Cancel a defer callback using the specified name, name must not be empty.

uint8_t	component_source_index_ {0}
	Index into component source PROGMEM lookup table (0 = not set)

uint8_t	warn_if_blocking_over_ {WARN_IF_BLOCKING_OVER_CS}
	Warn threshold in centiseconds (max 2550ms)

uint8_t	component_state_ {0x00}
	State of this component - each bit has a purpose: Bits 0-2: Component state (0x00=CONSTRUCTION, 0x01=SETUP, 0x02=LOOP, 0x03=FAILED, 0x04=LOOP_DONE) Bit 3: STATUS_LED_WARNING Bit 4: STATUS_LED_ERROR Bit 5: Has overridden loop() (set at registration time) Bits 6-7: Unused - reserved for future expansion.

volatile bool	pending_enable_loop_ {false}
	ISR-safe flag for enable_loop_soon_any_context.

ComponentRuntimeStats	runtime_stats_

Detailed Description

This class represents the communication layer between the front-end MQTT layer and the hardware output layer.

Definition at line 93 of file light_state.h.

Constructor & Destructor Documentation

◆ LightState()

esphome::light::LightState::LightState ( LightOutput * output )

Definition at line 13 of file light_state.cpp.

Member Function Documentation

◆ add_effects()

void esphome::light::LightState::add_effects ( const std::initializer_list< LightEffect * > & effects )

Add effects for this light state.

Definition at line 202 of file light_state.cpp.

◆ add_remote_values_listener()

void esphome::light::LightState::add_remote_values_listener ( LightRemoteValuesListener * listener )

Add a listener for remote values changes.

Listener is notified when the light's remote values change (state, brightness, color, etc.) Lazily allocates the listener vector on first registration.

Definition at line 176 of file light_state.cpp.

◆ add_target_state_reached_listener()

void esphome::light::LightState::add_target_state_reached_listener ( LightTargetStateReachedListener * listener )

Add a listener for target state reached.

Listener is notified when the light finishes a transition and reaches its target state. Lazily allocates the listener vector on first registration.

Definition at line 182 of file light_state.cpp.

◆ current_values_as_binary()

void esphome::light::LightState::current_values_as_binary ( bool * binary )

The result of all the current_values_as_* methods have gamma correction applied.

Definition at line 207 of file light_state.cpp.

◆ current_values_as_brightness()

void esphome::light::LightState::current_values_as_brightness ( float * brightness )

Definition at line 208 of file light_state.cpp.

◆ current_values_as_ct()

void esphome::light::LightState::current_values_as_ct	(	float *	color_temperature,
		float *	white_brightness )

Definition at line 284 of file light_state.cpp.

◆ current_values_as_cwww()

void esphome::light::LightState::current_values_as_cwww	(	float *	cold_white,
		float *	warm_white,
		bool	constant_brightness = false )

Definition at line 243 of file light_state.cpp.

◆ current_values_as_rgb()

void esphome::light::LightState::current_values_as_rgb	(	float *	red,
		float *	green,
		float *	blue )

Definition at line 212 of file light_state.cpp.

◆ current_values_as_rgbct()

void esphome::light::LightState::current_values_as_rgbct	(	float *	red,
		float *	green,
		float *	blue,
		float *	color_temperature,
		float *	white_brightness )

Definition at line 233 of file light_state.cpp.

◆ current_values_as_rgbw()

void esphome::light::LightState::current_values_as_rgbw	(	float *	red,
		float *	green,
		float *	blue,
		float *	white )

Definition at line 218 of file light_state.cpp.

◆ current_values_as_rgbww()

void esphome::light::LightState::current_values_as_rgbww	(	float *	red,
		float *	green,
		float *	blue,
		float *	cold_white,
		float *	warm_white,
		bool	constant_brightness = false )

Definition at line 225 of file light_state.cpp.

◆ disable_loop_if_idle_()

void esphome::light::LightState::disable_loop_if_idle_ ( )

protected

Disable loop if neither transformer nor effect is active.

Definition at line 397 of file light_state.cpp.

◆ dump_config()

void esphome::light::LightState::dump_config ( )

overridevirtual

Reimplemented from esphome::Component.

Definition at line 92 of file light_state.cpp.

◆ gamma_correct_lut() [1/2]

float esphome::light::LightState::gamma_correct_lut ( float value ) const

Apply gamma correction using the pre-computed forward LUT.

Definition at line 291 of file light_state.cpp.

◆ gamma_correct_lut() [2/2]

float esphome::light::LightState::gamma_correct_lut ( float value ) const

inline

No gamma LUT — passthrough.

Definition at line 184 of file light_state.h.

◆ gamma_uncorrect_lut() [1/2]

float esphome::light::LightState::gamma_uncorrect_lut ( float value ) const

Reverse gamma correction by binary-searching the forward LUT.

Definition at line 307 of file light_state.cpp.

◆ gamma_uncorrect_lut() [2/2]

float esphome::light::LightState::gamma_uncorrect_lut ( float value ) const

inline

Definition at line 185 of file light_state.h.

◆ get_active_effect_()

LightEffect * esphome::light::LightState::get_active_effect_ ( )

protected

Internal method to get the currently active effect.

Definition at line 341 of file light_state.cpp.

◆ get_current_effect_index()

uint32_t esphome::light::LightState::get_current_effect_index ( ) const

inline

Get the currently active effect index (0 = no effect, 1+ = effect index).

Definition at line 208 of file light_state.h.

◆ get_default_transition_length()

uint32_t esphome::light::LightState::get_default_transition_length ( ) const

Definition at line 192 of file light_state.cpp.

◆ get_effect_by_index()

LightEffect * esphome::light::LightState::get_effect_by_index ( uint32_t index ) const

inline

Get effect by index. Returns nullptr if index is invalid.

Definition at line 238 of file light_state.h.

◆ get_effect_count()

size_t esphome::light::LightState::get_effect_count ( ) const

inline

Get the total number of effects available for this light.

Definition at line 205 of file light_state.h.

◆ get_effect_index() [1/2]

uint32_t esphome::light::LightState::get_effect_index	(	const char *	name,
		size_t	len ) const

inline

Get effect index by name (const char* overload, avoids std::string construction).

Definition at line 224 of file light_state.h.

◆ get_effect_index() [2/2]

uint32_t esphome::light::LightState::get_effect_index ( const std::string & effect_name ) const

inline

Get effect index by name. Returns 0 if effect not found.

Definition at line 211 of file light_state.h.

◆ get_effect_name()

StringRef esphome::light::LightState::get_effect_name ( )

Return the name of the current effect, or if no effect is active "None".

Definition at line 169 of file light_state.cpp.

◆ get_effect_name_by_index()

std::string esphome::light::LightState::get_effect_name_by_index ( uint32_t index ) const

inline

Get effect name by index. Returns "None" for index 0, empty string for invalid index.

Definition at line 246 of file light_state.h.

◆ get_effects()

const FixedVector< LightEffect * > & esphome::light::LightState::get_effects ( ) const

Get all effects for this light state.

Definition at line 201 of file light_state.cpp.

◆ get_flash_transition_length()

uint32_t esphome::light::LightState::get_flash_transition_length ( ) const

Definition at line 196 of file light_state.cpp.

◆ get_gamma_correct()

float esphome::light::LightState::get_gamma_correct ( ) const

inline

Definition at line 169 of file light_state.h.

◆ get_gamma_table()

const uint16_t * esphome::light::LightState::get_gamma_table ( ) const

inline

Get the forward gamma lookup table.

Definition at line 176 of file light_state.h.

◆ get_output()

LightOutput * esphome::light::LightState::get_output ( ) const

Get the light output associated with this object.

Definition at line 165 of file light_state.cpp.

◆ get_setup_priority()

float esphome::light::LightState::get_setup_priority ( ) const

overridevirtual

Shortly after HARDWARE.

Reimplemented from esphome::Component.

Definition at line 152 of file light_state.cpp.

◆ get_traits()

LightTraits esphome::light::LightState::get_traits ( )

Definition at line 15 of file light_state.cpp.

◆ is_transformer_active()

bool esphome::light::LightState::is_transformer_active ( )

Indicator if a transformer (e.g.

transition) is active. This is useful for effects e.g. at the start of the apply() method, add a check like:

if (this->state_->is_transformer_active()) { // Something is already running. return; }

Definition at line 328 of file light_state.cpp.

◆ loop()

void esphome::light::LightState::loop ( )

overridevirtual

Reimplemented from esphome::Component.

Definition at line 108 of file light_state.cpp.

◆ make_call()

LightCall esphome::light::LightState::make_call ( )

Definition at line 19 of file light_state.cpp.

◆ publish_state()

void esphome::light::LightState::publish_state ( )

Publish the currently active state to the frontend.

Definition at line 154 of file light_state.cpp.

◆ save_remote_values_()

void esphome::light::LightState::save_remote_values_ ( )

protected

Internal method to save the current remote_values to the preferences.

Definition at line 404 of file light_state.cpp.

◆ schedule_write_()

void esphome::light::LightState::schedule_write_ ( )

inlineprotected

Schedule a write to the light output and enable the loop to process it.

Definition at line 313 of file light_state.h.

◆ set_default_transition_length()

void esphome::light::LightState::set_default_transition_length ( uint32_t default_transition_length )

Set the default transition length, i.e. the transition length when no transition is provided.

Definition at line 189 of file light_state.cpp.

◆ set_flash_transition_length()

void esphome::light::LightState::set_flash_transition_length ( uint32_t flash_transition_length )

Set the flash transition length.

Definition at line 193 of file light_state.cpp.

◆ set_gamma_correct()

void esphome::light::LightState::set_gamma_correct ( float gamma_correct )

Set the gamma correction factor.

Definition at line 197 of file light_state.cpp.

◆ set_gamma_table()

void esphome::light::LightState::set_gamma_table ( const uint16_t * forward )

inline

Set pre-computed gamma forward lookup table (256-entry uint16 PROGMEM array)

Definition at line 173 of file light_state.h.

◆ set_immediately_()

void esphome::light::LightState::set_immediately_	(	const LightColorValues &	target,
		bool	set_remote_values )

protected

Internal method to set the color values to target immediately (with no transition).

Definition at line 386 of file light_state.cpp.

◆ set_initial_state()

void esphome::light::LightState::set_initial_state ( void(* callback )(LightStateRTCState &) )

Set a callback to populate the initial state defaults during setup.

The callback is called once, then cleared. Values live in flash as code.

Definition at line 199 of file light_state.cpp.

◆ set_restore_mode()

void esphome::light::LightState::set_restore_mode ( LightRestoreMode restore_mode )

Set the restore mode of this light.

Definition at line 198 of file light_state.cpp.

◆ setup()

void esphome::light::LightState::setup ( )

overridevirtual

Load state from preferences.

Reimplemented from esphome::Component.

Definition at line 21 of file light_state.cpp.

◆ start_effect_()

void esphome::light::LightState::start_effect_ ( uint32_t effect_index )

protected

Internal method to start an effect with the given index.

Definition at line 330 of file light_state.cpp.

◆ start_flash_()

void esphome::light::LightState::start_flash_	(	const LightColorValues &	target,
		uint32_t	length,
		bool	set_remote_values )

protected

Internal method to start a flash for the specified amount of time.

Definition at line 369 of file light_state.cpp.

◆ start_transition_()

void esphome::light::LightState::start_transition_	(	const LightColorValues &	target,
		uint32_t	length,
		bool	set_remote_values )

protected

Internal method to start a transition to the target color with the given length.

Definition at line 358 of file light_state.cpp.

◆ stop_effect_()

void esphome::light::LightState::stop_effect_ ( )

protected

Internal method to stop the current effect (if one is active).

Definition at line 348 of file light_state.cpp.

◆ supports_effects()

bool esphome::light::LightState::supports_effects ( )

Return whether the light has any effects that meet the trait requirements.

Definition at line 200 of file light_state.cpp.

◆ toggle()

LightCall esphome::light::LightState::toggle ( )

Definition at line 18 of file light_state.cpp.

◆ turn_off()

LightCall esphome::light::LightState::turn_off ( )

Definition at line 17 of file light_state.cpp.

◆ turn_on()

LightCall esphome::light::LightState::turn_on ( )

Make a light state call.

Definition at line 16 of file light_state.cpp.

Field Documentation

◆ active_effect_index_

uint32_t esphome::light::LightState::active_effect_index_ {}

protected

Value for storing the index of the currently active effect. 0 if no effect is active.

Definition at line 351 of file light_state.h.

◆ current_values

LightColorValues esphome::light::LightState::current_values

The current values of the light as outputted to the light.

These values represent the "real" state of the light - During transitions this property will be changed continuously (in contrast to .remote_values, where they are constant during transitions).

This value does not have gamma correction applied.

This property is read-only for users. Any changes to it will be ignored.

Definition at line 124 of file light_state.h.

◆ default_transition_length_

uint32_t esphome::light::LightState::default_transition_length_ {}

protected

Default transition length for all transitions in ms.

Definition at line 353 of file light_state.h.

◆ effects_

FixedVector<LightEffect *> esphome::light::LightState::effects_

protected

List of effects for this light.

Definition at line 323 of file light_state.h.

◆ flash_transition_length_

uint32_t esphome::light::LightState::flash_transition_length_ {}

protected

Transition length to use for flash transitions.

Definition at line 355 of file light_state.h.

◆ gamma_correct_

float esphome::light::LightState::gamma_correct_ {}

protected

Gamma correction factor for the light.

Definition at line 357 of file light_state.h.

◆ gamma_table_

const uint16_t* esphome::light::LightState::gamma_table_ {nullptr}

protected

Definition at line 359 of file light_state.h.

◆ initial_state_callback_

void(* esphome::light::LightState::initial_state_callback_) (LightStateRTCState &)

inlineprotected

Callback to populate initial state defaults — called once during setup, then cleared.

Values live in flash as function body; no per-instance data storage beyond this pointer.

Definition at line 348 of file light_state.h.

◆ is_transformer_active_

bool esphome::light::LightState::is_transformer_active_ {false}

protected

Definition at line 365 of file light_state.h.

◆ LightCall

friend esphome::light::LightState::LightCall

protected

Definition at line 288 of file light_state.h.

◆ LightOutput

friend esphome::light::LightState::LightOutput

protected

Definition at line 287 of file light_state.h.

◆ next_write_

bool esphome::light::LightState::next_write_ {true}

protected

Whether the light value should be written in the next cycle.

Definition at line 363 of file light_state.h.

◆ output_

LightOutput* esphome::light::LightState::output_

protected

Store the output to allow effects to have more access.

Definition at line 319 of file light_state.h.

◆ remote_values

LightColorValues esphome::light::LightState::remote_values

The remote color values reported to the frontend.

These are different from the "current" values: For example transitions will continuously change the "current" values. But the remote values will immediately switch to the target value for a transition, reducing the number of packets sent.

This value does not have gamma correction applied.

This property is read-only for users. Any changes to it will be ignored.

Definition at line 136 of file light_state.h.

◆ remote_values_listeners_

std::unique_ptr<std::vector<LightRemoteValuesListener *> > esphome::light::LightState::remote_values_listeners_

protected

Listeners for remote values changes.

"Remote values" are light color values that are reported to the frontend and have a lower publish frequency than the "real" color values. For example, during transitions the current color value may change continuously, but the remote values will be reported as the target values starting with the beginning of the transition.

Lazily allocated - only created when a listener is actually registered.

Definition at line 336 of file light_state.h.

◆ restore_mode_

LightRestoreMode esphome::light::LightState::restore_mode_

protected

Restore mode of the light.

Definition at line 367 of file light_state.h.

◆ rtc_

ESPPreferenceObject esphome::light::LightState::rtc_

protected

Object used to store the persisted values of the light.

Definition at line 325 of file light_state.h.

◆ target_state_reached_listeners_

std::unique_ptr<std::vector<LightTargetStateReachedListener *> > esphome::light::LightState::target_state_reached_listeners_

protected

Listeners for target state reached.

Notified when the state of current_values and remote_values are equal (when the transition is finished).

Lazily allocated - only created when a listener is actually registered.

Definition at line 344 of file light_state.h.

◆ transformer_

std::unique_ptr<LightTransformer> esphome::light::LightState::transformer_ {nullptr}

protected

The currently active transformer for this light (transition/flash).

Definition at line 321 of file light_state.h.

The documentation for this class was generated from the following files:

esphome/components/light/light_state.h
esphome/components/light/light_state.cpp

Public Member Functions

Data Fields

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ LightState()

Member Function Documentation

◆ add_effects()

◆ add_remote_values_listener()

◆ add_target_state_reached_listener()

◆ current_values_as_binary()

◆ current_values_as_brightness()

◆ current_values_as_ct()

◆ current_values_as_cwww()

◆ current_values_as_rgb()

◆ current_values_as_rgbct()

◆ current_values_as_rgbw()

◆ current_values_as_rgbww()

◆ disable_loop_if_idle_()

◆ dump_config()

◆ gamma_correct_lut() [1/2]

◆ gamma_correct_lut() [2/2]

◆ gamma_uncorrect_lut() [1/2]

◆ gamma_uncorrect_lut() [2/2]

◆ get_active_effect_()

◆ get_current_effect_index()

◆ get_default_transition_length()

◆ get_effect_by_index()

◆ get_effect_count()

◆ get_effect_index() [1/2]

◆ get_effect_index() [2/2]

◆ get_effect_name()

◆ get_effect_name_by_index()

◆ get_effects()

◆ get_flash_transition_length()

◆ get_gamma_correct()

◆ get_gamma_table()

◆ get_output()

◆ get_setup_priority()

◆ get_traits()

◆ is_transformer_active()

◆ loop()

◆ make_call()

◆ publish_state()

◆ save_remote_values_()

◆ schedule_write_()

◆ set_default_transition_length()

◆ set_flash_transition_length()

◆ set_gamma_correct()

◆ set_gamma_table()

◆ set_immediately_()

◆ set_initial_state()

◆ set_restore_mode()

◆ setup()

◆ start_effect_()

◆ start_flash_()

◆ start_transition_()

◆ stop_effect_()

◆ supports_effects()

◆ toggle()

◆ turn_off()

◆ turn_on()

Field Documentation

◆ active_effect_index_

◆ current_values

◆ default_transition_length_

◆ effects_

◆ flash_transition_length_

◆ gamma_correct_

◆ gamma_table_

◆ initial_state_callback_

◆ is_transformer_active_

◆ LightCall

◆ LightOutput

◆ next_write_

◆ output_

◆ remote_values

◆ remote_values_listeners_

◆ restore_mode_