From dcf0a3e475e55642639a65ac7ab97c038ba5a331 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max.kellermann@gmail.com>
Date: Mon, 13 Mar 2023 12:33:19 +0100
Subject: [PATCH] pcm/Normalizer: remove `clipped` (only written to, never
 read)

---
 src/pcm/Normalizer.cxx | 4 ----
 src/pcm/Normalizer.hxx | 5 -----
 2 files changed, 9 deletions(-)

diff --git a/src/pcm/Normalizer.cxx b/src/pcm/Normalizer.cxx
index 64e484b8e..2b3f2af82 100644
--- a/src/pcm/Normalizer.cxx
+++ b/src/pcm/Normalizer.cxx
@@ -63,8 +63,6 @@ PcmNormalizer::ProcessS16(int16_t *audio, std::size_t count) noexcept
                 curGain = 1 << 10;
 	const int delta = (newGain - curGain) / (int)ramp;
 
-        auto &clipped_ = clipped[slot];
-        clipped_ = 0;
 	for (std::size_t i = 0; i < count; i++) {
 		int sample;
 
@@ -72,11 +70,9 @@ PcmNormalizer::ProcessS16(int16_t *audio, std::size_t count) noexcept
 		sample = audio[i] * curGain >> 10;
 		if (sample < -32768)
 		{
-			clipped_ += -32768 - sample;
 			sample = -32768;
 		} else if (sample > 32767)
 		{
-			clipped_ += sample - 32767;
 			sample = 32767;
 		}
 		audio[i] = sample;
diff --git a/src/pcm/Normalizer.hxx b/src/pcm/Normalizer.hxx
index 2191809f3..507df73be 100644
--- a/src/pcm/Normalizer.hxx
+++ b/src/pcm/Normalizer.hxx
@@ -23,9 +23,6 @@ class PcmNormalizer {
         //! History of the gain values
         int *const gain;
 
-        //! History of clip amounts
-        int *const clipped;
-
 	std::size_t pos = 0;
         const std::size_t bufsz;
 
@@ -33,7 +30,6 @@ public:
 	PcmNormalizer(std::size_t history=400) noexcept
 		:peaks(new int[history]{}),
 		 gain(new int[history]{}),
-		 clipped(new int[history]{}),
 		 bufsz(history)
 	{
 	}
@@ -41,7 +37,6 @@ public:
 	~PcmNormalizer() noexcept {
 		delete[] peaks;
 		delete[] gain;
-		delete[] clipped;
 	}
 
 	//! Process 16-bit signed data