From d211d56e473902866b667c6adccd9998be234d92 Mon Sep 17 00:00:00 2001
From: Zephyron <zephyron@citron-emu.org>
Date: Thu, 4 Dec 2025 19:38:32 +1000
Subject: [PATCH] fix(audio): correct biquad filter ParameterVersion2 structure

- Change coefficients from fixed-point s16 to native float f32
- Reorder fields: enable, channel_count, then arrays
- Remove state field (not present in v2)
- Change inputs/outputs from std::array to C-style arrays

Signed-off-by: Zephyron <zephyron@citron-emu.org>
---
 src/audio_core/renderer/effect/biquad_filter.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/audio_core/renderer/effect/biquad_filter.h b/src/audio_core/renderer/effect/biquad_filter.h
index 5a22899ab..382c0c766 100644
--- a/src/audio_core/renderer/effect/biquad_filter.h
+++ b/src/audio_core/renderer/effect/biquad_filter.h
@@ -25,12 +25,12 @@ public:
                   "BiquadFilterInfo::ParameterVersion1 has the wrong size!");
 
     struct ParameterVersion2 {
-        /* 0x00 */ std::array<s8, MaxChannels> inputs;
-        /* 0x06 */ std::array<s8, MaxChannels> outputs;
-        /* 0x0C */ std::array<s16, 3> b;
-        /* 0x12 */ std::array<s16, 2> a;
-        /* 0x16 */ s8 channel_count;
-        /* 0x17 */ ParameterState state;
+        bool enable;
+        s8 channel_count;
+        s8 inputs[MaxChannels];
+        s8 outputs[MaxChannels];
+        std::array<f32, 3> b;
+        std::array<f32, 2> a;
     };
     static_assert(sizeof(ParameterVersion2) <= sizeof(EffectInfoBase::InParameterVersion2),
                   "BiquadFilterInfo::ParameterVersion2 has the wrong size!");