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This commit is contained in:
J. Nick Koston 2025-07-05 13:00:48 -05:00
parent 70f935d323
commit 82fd62e9dd
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1 changed files with 11 additions and 2 deletions
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13
esphome/components/light/light_call.h
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@ -9,6 +9,11 @@ namespace light {
class LightState;
/** This class represents a requested change in a light state.
*
* Light state changes are tracked using a bitfield flags_ to minimize memory usage.
* Each possible light property has a flag indicating whether it has been set.
* This design keeps LightCall at ~56 bytes to minimize heap fragmentation on
* ESP8266 and other memory-constrained devices.
*/
class LightCall {
public:
@ -182,6 +187,7 @@ class LightCall {
/// Some color modes also can be set using non-native parameters, transform those calls.
void transform_parameters_();
// Bitfield flags - each flag indicates whether a corresponding value has been set.
enum FieldFlags : uint16_t {
FLAG_HAS_STATE = 1 << 0,
FLAG_HAS_TRANSITION = 1 << 1,
@ -216,6 +222,8 @@ class LightCall {
}
LightState *parent_;
// Light state values - use flags_ to check if a value has been set.
// Group 4-byte aligned members first
uint32_t transition_length_;
uint32_t flash_length_;
@ -229,8 +237,9 @@ class LightCall {
float color_temperature_;
float cold_white_;
float warm_white_;
// Group smaller members at the end for better packing
uint16_t flags_{FLAG_PUBLISH | FLAG_SAVE}; // Default publish and save to true
// Smaller members at the end for better packing
uint16_t flags_{FLAG_PUBLISH | FLAG_SAVE}; // Tracks which values are set
ColorMode color_mode_;
bool state_;
};