--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/foobar2000/helpers/packet_decoder_mp3_common.h	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,84 @@
+#pragma once
+#include <SDK/packet_decoder.h>
+/*
+Helper code with common MP3 packet_decoder functionality. Primarily meant for foo_input_std-internal use.
+*/
+
+class packet_decoder_mp3_common : public packet_decoder {
+public:
+    static unsigned parseDecoderSetup( const GUID & p_owner,t_size p_param1,const void * p_param2,t_size p_param2size );
+	
+	static unsigned layer_from_frame(const void *, size_t);
+
+	static unsigned get_max_frame_dependency_() {return 10;}
+	static double get_max_frame_dependency_time_() {return 10.0 * 1152.0 / 32000.0;}
+};
+
+
+template<typename impl_t>
+class packet_decoder_mp3 : public packet_decoder
+{
+	impl_t m_decoder;
+	unsigned m_layer;
+
+	void init(unsigned p_layer) {
+		m_layer = p_layer;
+		m_decoder.reset_after_seek();
+	}
+
+	bool m_MP4fixes;
+
+public:
+	packet_decoder_mp3() : m_layer(0), m_MP4fixes()
+	{
+	}
+
+	~packet_decoder_mp3()
+	{
+	}
+
+	t_size set_stream_property(const GUID & p_type, t_size p_param1, const void * p_param2, t_size p_param2size) {
+		return m_decoder.set_stream_property(p_type, p_param1, p_param2, p_param2size);
+	}
+
+	void get_info(file_info & p_info)
+	{
+		switch (m_layer)
+		{ 
+		case 1:	p_info.info_set("codec", "MP1"); break;
+		case 2:	p_info.info_set("codec", "MP2"); break;
+		case 3:	p_info.info_set("codec", "MP3"); break;
+		default:
+			throw exception_io_data();
+		}
+		p_info.info_set("encoding", "lossy");
+	}
+
+	unsigned get_max_frame_dependency() { return 10; }
+	double get_max_frame_dependency_time() { return 10.0 * 1152.0 / 32000.0; }
+
+	static bool g_is_our_setup(const GUID & p_owner, t_size p_param1, const void * p_param2, t_size p_param2size) {
+		return packet_decoder_mp3_common::parseDecoderSetup(p_owner, p_param1, p_param2, p_param2size) != 0;
+	}
+
+	void open(const GUID & p_owner, bool p_decode, t_size p_param1, const void * p_param2, t_size p_param2size, abort_callback & p_abort)
+	{
+		m_MP4fixes = (p_owner == owner_MP4);
+		unsigned layer = packet_decoder_mp3_common::parseDecoderSetup(p_owner, p_param1, p_param2, p_param2size);
+		if (layer == 0) throw exception_io_data();
+		init(layer);
+	}
+
+	void reset_after_seek() {
+		m_decoder.reset_after_seek();
+	}
+
+	void decode(const void * p_buffer, t_size p_bytes, audio_chunk & p_chunk, abort_callback & p_abort) {
+		m_decoder.decode(p_buffer, p_bytes, p_chunk, p_abort);
+	}
+
+	bool analyze_first_frame_supported() { return m_MP4fixes; }
+	void analyze_first_frame(const void * p_buffer, t_size p_bytes, abort_callback & p_abort) {
+		m_layer = packet_decoder_mp3_common::layer_from_frame(p_buffer, p_bytes);
+	}
+};