From 547c7d6dc82b0b01e3c1cf1395545f32c0785cdb Mon Sep 17 00:00:00 2001
From: Kevin Ahrendt <kahrendt@gmail.com>
Date: Thu, 3 Jul 2025 17:17:01 +0100
Subject: [PATCH] [microphone] simplify mute handling to avoid unnecessary
 copies (#9303)

---
 esphome/components/microphone/microphone.cpp | 16 +++++++---------
 esphome/components/microphone/microphone.h   |  2 --
 2 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/esphome/components/microphone/microphone.cpp b/esphome/components/microphone/microphone.cpp
index b1289f3791..0fbb393fd2 100644
--- a/esphome/components/microphone/microphone.cpp
+++ b/esphome/components/microphone/microphone.cpp
@@ -5,17 +5,15 @@ namespace microphone {
 
 void Microphone::add_data_callback(std::function<void(const std::vector<uint8_t> &)> &&data_callback) {
   std::function<void(const std::vector<uint8_t> &)> mute_handled_callback =
-      [this, data_callback](const std::vector<uint8_t> &data) { data_callback(this->silence_audio_(data)); };
+      [this, data_callback](const std::vector<uint8_t> &data) {
+        if (this->mute_state_) {
+          data_callback(std::vector<uint8_t>(data.size(), 0));
+        } else {
+          data_callback(data);
+        };
+      };
   this->data_callbacks_.add(std::move(mute_handled_callback));
 }
 
-std::vector<uint8_t> Microphone::silence_audio_(std::vector<uint8_t> data) {
-  if (this->mute_state_) {
-    std::memset((void *) data.data(), 0, data.size());
-  }
-
-  return data;
-}
-
 }  // namespace microphone
 }  // namespace esphome
diff --git a/esphome/components/microphone/microphone.h b/esphome/components/microphone/microphone.h
index ea4e979e20..fcf9822458 100644
--- a/esphome/components/microphone/microphone.h
+++ b/esphome/components/microphone/microphone.h
@@ -33,8 +33,6 @@ class Microphone {
   audio::AudioStreamInfo get_audio_stream_info() { return this->audio_stream_info_; }
 
  protected:
-  std::vector<uint8_t> silence_audio_(std::vector<uint8_t> data);
-
   State state_{STATE_STOPPED};
   bool mute_state_{false};