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[light] Add zero-copy support for API effect commands (#12384)

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This commit is contained in:
J. Nick Koston
2025-12-10 04:19:29 +01:00
committed by Jonathan Swoboda
parent a3a2a6d965
commit 1d13d18a16
7 changed files with 21 additions and 12 deletions
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2
esphome/components/api/api.proto
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@@ -579,7 +579,7 @@ message LightCommandRequest {
bool has_flash_length = 16;
uint32 flash_length = 17;
bool has_effect = 18;
string effect = 19;
string effect = 19 [(pointer_to_buffer) = true];
uint32 device_id = 28 [(field_ifdef) = "USE_DEVICES"];
}

2
esphome/components/api/api_connection.cpp
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@@ -533,7 +533,7 @@ void APIConnection::light_command(const LightCommandRequest &msg) {
if (msg.has_flash_length)
call.set_flash_length(msg.flash_length);
if (msg.has_effect)
call.set_effect(msg.effect);
call.set_effect(reinterpret_cast<const char *>(msg.effect), msg.effect_len);
call.perform();
}
#endif

7
esphome/components/api/api_pb2.cpp
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@@ -611,9 +611,12 @@ bool LightCommandRequest::decode_varint(uint32_t field_id, ProtoVarInt value) {
}
bool LightCommandRequest::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
switch (field_id) {
case 19:
this->effect = value.as_string();
case 19: {
// Use raw data directly to avoid allocation
this->effect = value.data();
this->effect_len = value.size();
break;
}
default:
return false;
}

5
esphome/components/api/api_pb2.h
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@@ -840,7 +840,7 @@ class LightStateResponse final : public StateResponseProtoMessage {
class LightCommandRequest final : public CommandProtoMessage {
public:
static constexpr uint8_t MESSAGE_TYPE = 32;
static constexpr uint8_t ESTIMATED_SIZE = 112;
static constexpr uint8_t ESTIMATED_SIZE = 122;
#ifdef HAS_PROTO_MESSAGE_DUMP
const char *message_name() const override { return "light_command_request"; }
#endif
@@ -869,7 +869,8 @@ class LightCommandRequest final : public CommandProtoMessage {
bool has_flash_length{false};
uint32_t flash_length{0};
bool has_effect{false};
std::string effect{};
const uint8_t *effect{nullptr};
uint16_t effect_len{0};
#ifdef HAS_PROTO_MESSAGE_DUMP
void dump_to(std::string &out) const override;
#endif

4
esphome/components/api/api_pb2_dump.cpp
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@@ -999,7 +999,9 @@ void LightCommandRequest::dump_to(std::string &out) const {
dump_field(out, "has_flash_length", this->has_flash_length);
dump_field(out, "flash_length", this->flash_length);
dump_field(out, "has_effect", this->has_effect);
dump_field(out, "effect", this->effect);
out.append(" effect: ");
out.append(format_hex_pretty(this->effect, this->effect_len));
out.append("\n");
#ifdef USE_DEVICES
dump_field(out, "device_id", this->device_id);
#endif

9
esphome/components/light/light_call.cpp
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@@ -504,8 +504,8 @@ color_mode_bitmask_t LightCall::get_suitable_color_modes_mask_() {
#undef KEY
}
LightCall &LightCall::set_effect(const std::string &effect) {
if (strcasecmp(effect.c_str(), "none") == 0) {
LightCall &LightCall::set_effect(const char *effect, size_t len) {
if (len == 4 && strncasecmp(effect, "none", 4) == 0) {
this->set_effect(0);
return *this;
}
@@ -513,15 +513,16 @@ LightCall &LightCall::set_effect(const std::string &effect) {
bool found = false;
for (uint32_t i = 0; i < this->parent_->effects_.size(); i++) {
LightEffect *e = this->parent_->effects_[i];
const char *name = e->get_name();
if (strcasecmp(effect.c_str(), e->get_name()) == 0) {
if (strncasecmp(effect, name, len) == 0 && name[len] == '\0') {
this->set_effect(i + 1);
found = true;
break;
}
}
if (!found) {
ESP_LOGW(TAG, "'%s': no such effect '%s'", this->parent_->get_name().c_str(), effect.c_str());
ESP_LOGW(TAG, "'%s': no such effect '%.*s'", this->parent_->get_name().c_str(), (int) len, effect);
}
return *this;
}

4
esphome/components/light/light_call.h
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@@ -129,7 +129,9 @@ class LightCall {
/// Set the effect of the light by its name.
LightCall &set_effect(optional<std::string> effect);
/// Set the effect of the light by its name.
LightCall &set_effect(const std::string &effect);
LightCall &set_effect(const std::string &effect) { return this->set_effect(effect.data(), effect.size()); }
/// Set the effect of the light by its name and length (zero-copy from API).
LightCall &set_effect(const char *effect, size_t len);
/// Set the effect of the light by its internal index number (only for internal use).
LightCall &set_effect(uint32_t effect_number);
LightCall &set_effect(optional<uint32_t> effect_number);