--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/foobar2000/shared/audio_math.h	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,82 @@
+#pragma once
+
+#include <stdint.h>
+#if SIZE_MAX < UINT64_MAX
+#define audio_sample_size 32
+#else
+#define audio_sample_size 64
+#endif
+
+#if audio_sample_size == 32
+typedef float audio_sample;
+#define audio_sample_asm dword
+#elif audio_sample_size == 64
+typedef double audio_sample;
+#define audio_sample_asm qword
+#else
+#error wrong audio_sample_size
+#endif
+
+#define audio_sample_bytes (audio_sample_size/8)
+
+/*
+PROBLEM: 
+audio_math is implemented in pfc (pfc::audio_math) and in shared.dll (::audio_math)
+We must overlay shared.dll methods on top of PFC ones
+*/
+
+namespace audio_math
+{
+	//! p_source/p_output can point to same buffer
+	void SHARED_EXPORT scale(const audio_sample * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale);
+	void SHARED_EXPORT convert_to_int16(const audio_sample * p_source,t_size p_count,t_int16 * p_output,audio_sample p_scale);
+	void SHARED_EXPORT convert_to_int32(const audio_sample * p_source,t_size p_count,t_int32 * p_output,audio_sample p_scale);
+	audio_sample SHARED_EXPORT convert_to_int16_calculate_peak(const audio_sample * p_source,t_size p_count,t_int16 * p_output,audio_sample p_scale);
+	void SHARED_EXPORT convert_from_int16(const t_int16 * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale);
+	void SHARED_EXPORT convert_from_int32(const t_int32 * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale);
+	audio_sample SHARED_EXPORT convert_to_int32_calculate_peak(const audio_sample * p_source,t_size p_count,t_int32 * p_output,audio_sample p_scale);
+	audio_sample SHARED_EXPORT calculate_peak(const audio_sample * p_source,t_size p_count);
+	void SHARED_EXPORT kill_denormal(audio_sample * p_buffer,t_size p_count);
+	void SHARED_EXPORT add_offset(audio_sample * p_buffer,audio_sample p_delta,t_size p_count);
+}
+
+namespace audio_math_shareddll = audio_math;
+typedef pfc::audio_math audio_math_pfc;
+
+// Overlay class, overrides specific pfc::audio_math methods
+class fb2k_audio_math : public audio_math_pfc {
+public:
+	static void scale(const audio_sample * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale) {
+		audio_math_shareddll::scale(p_source, p_count, p_output, p_scale);
+	}
+	static void convert_to_int16(const audio_sample * p_source,t_size p_count,t_int16 * p_output,audio_sample p_scale) {
+		audio_math_shareddll::convert_to_int16(p_source, p_count, p_output, p_scale);
+	}
+	static void convert_to_int32(const audio_sample * p_source,t_size p_count,t_int32 * p_output,audio_sample p_scale) {
+		audio_math_shareddll::convert_to_int32(p_source, p_count, p_output, p_scale);
+	}
+	static audio_sample convert_to_int16_calculate_peak(const audio_sample * p_source,t_size p_count,t_int16 * p_output,audio_sample p_scale) {
+		return audio_math_shareddll::convert_to_int16_calculate_peak(p_source,p_count,p_output,p_scale);
+	}
+	static void convert_from_int16(const t_int16 * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale) {
+		audio_math_shareddll::convert_from_int16(p_source,p_count,p_output,p_scale);
+	}
+	static void convert_from_int32(const t_int32 * p_source,t_size p_count,audio_sample * p_output,audio_sample p_scale) {
+		audio_math_shareddll::convert_from_int32(p_source,p_count,p_output,p_scale);
+	}
+	static audio_sample convert_to_int32_calculate_peak(const audio_sample * p_source,t_size p_count,t_int32 * p_output,audio_sample p_scale) {
+		return audio_math_shareddll::convert_to_int32_calculate_peak(p_source,p_count,p_output,p_scale);
+	}
+	static audio_sample calculate_peak(const audio_sample * p_source,t_size p_count) {
+		return audio_math_shareddll::calculate_peak(p_source,p_count);
+	}
+	static void kill_denormal(audio_sample * p_buffer,t_size p_count) {
+		audio_math_shareddll::kill_denormal(p_buffer, p_count);
+	}
+	static void add_offset(audio_sample * p_buffer,audio_sample p_delta,t_size p_count) {
+		audio_math_shareddll::add_offset(p_buffer,p_delta,p_count);
+	}
+};
+
+// Anyone trying to talk to audio_math namespace will reach fb2k_audio_math which calls the right thing
+#define audio_math fb2k_audio_math