--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/foobar2000/SDK/file_info_impl.h	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,143 @@
+#pragma once
+
+#include <pfc/array.h>
+#include "file_info.h"
+
+namespace file_info_impl_utils {
+
+	struct info_entry {
+		void init(const char * p_name,t_size p_name_len,const char * p_value,t_size p_value_len) {
+			m_name.set_string(p_name,p_name_len);
+			m_value.set_string(p_value,p_value_len);
+		}
+		
+		inline const char * get_name() const {return m_name;}
+		inline const char * get_value() const {return m_value;}
+
+		pfc::string_simple m_name,m_value;
+	};
+
+	typedef pfc::array_t<info_entry,pfc::alloc_fast> info_entry_array;
+
+}
+
+namespace pfc {
+	template<> class traits_t<file_info_impl_utils::info_entry> : public traits_t<pfc::string_simple> {};
+};
+
+
+namespace file_info_impl_utils {
+	class info_storage
+	{
+	public:
+		t_size add_item(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
+		void remove_mask(const bit_array & p_mask);	
+		inline t_size get_count() const {return m_info.get_count();}
+		inline const char * get_name(t_size p_index) const {return m_info[p_index].get_name();}
+		inline const char * get_value(t_size p_index) const {return m_info[p_index].get_value();}
+		void copy_from(const file_info & p_info);
+	private:
+		info_entry_array m_info;
+	};
+}
+
+
+namespace file_info_impl_utils {
+	typedef pfc::array_hybrid_t<pfc::string_simple,1,pfc::alloc_fast > meta_value_array;
+	struct meta_entry {
+		meta_entry() {}
+		meta_entry(const char * p_name,t_size p_name_len,const char * p_value,t_size p_value_len);
+
+		void remove_values(const bit_array & p_mask);
+		void insert_value(t_size p_value_index,const char * p_value,t_size p_value_length);
+		void modify_value(t_size p_value_index,const char * p_value,t_size p_value_length);
+
+		inline const char * get_name() const {return m_name;}
+		inline const char * get_value(t_size p_index) const {return m_values[p_index];}
+		inline t_size get_value_count() const {return m_values.get_size();}
+		
+
+		pfc::string_simple m_name;
+		meta_value_array m_values;
+	};
+	typedef pfc::array_hybrid_t<meta_entry,10, pfc::alloc_fast> meta_entry_array;
+}
+namespace pfc {
+	template<> class traits_t<file_info_impl_utils::meta_entry> : public pfc::traits_combined<pfc::string_simple,file_info_impl_utils::meta_value_array> {};
+}
+
+
+namespace file_info_impl_utils {
+	class meta_storage
+	{
+	public:
+		size_t add_blank(const char* name);
+		t_size add_entry(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
+		void insert_value(t_size p_index,t_size p_value_index,const char * p_value,t_size p_value_length);
+		void modify_value(t_size p_index,t_size p_value_index,const char * p_value,t_size p_value_length);
+		void remove_values(t_size p_index,const bit_array & p_mask);
+		void remove_mask(const bit_array & p_mask);
+		void copy_from(const file_info & p_info);
+
+		inline void reorder(const t_size * p_order);
+
+		inline t_size get_count() const {return m_data.get_size();}
+		
+		inline const char * get_name(t_size p_index) const {PFC_ASSERT(p_index < m_data.get_size()); return m_data[p_index].get_name();}
+		inline const char * get_value(t_size p_index,t_size p_value_index) const {PFC_ASSERT(p_index < m_data.get_size()); return m_data[p_index].get_value(p_value_index);}
+		inline t_size get_value_count(t_size p_index) const {PFC_ASSERT(p_index < m_data.get_size()); return m_data[p_index].get_value_count();}
+
+	private:
+		meta_entry_array m_data;
+	};
+}
+
+//! Implements file_info.
+class file_info_impl : public file_info
+{
+public:
+	file_info_impl(const file_info_impl & p_source);
+	file_info_impl(const file_info & p_source);
+	file_info_impl();
+	~file_info_impl();
+
+	double		get_length() const;
+	void		set_length(double p_length);
+
+	void		copy_meta(const file_info & p_source);//virtualized for performance reasons, can be faster in two-pass
+	void		copy_info(const file_info & p_source);//virtualized for performance reasons, can be faster in two-pass
+	
+	t_size	meta_get_count() const;
+	const char*	meta_enum_name(t_size p_index) const;
+	t_size	meta_enum_value_count(t_size p_index) const;
+	const char*	meta_enum_value(t_size p_index,t_size p_value_number) const;
+	t_size	meta_set_ex(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
+	void		meta_insert_value_ex(t_size p_index,t_size p_value_index,const char * p_value,t_size p_value_length);
+	void		meta_remove_mask(const bit_array & p_mask);
+	void		meta_reorder(const t_size * p_order);
+	void		meta_remove_values(t_size p_index,const bit_array & p_mask);
+	void		meta_modify_value_ex(t_size p_index,t_size p_value_index,const char * p_value,t_size p_value_length);
+
+	t_size	info_get_count() const;
+	const char*	info_enum_name(t_size p_index) const;
+	const char*	info_enum_value(t_size p_index) const;
+	t_size	info_set_ex(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
+	void		info_remove_mask(const bit_array & p_mask);
+
+	const file_info_impl & operator=(const file_info_impl & p_source);
+
+	replaygain_info	get_replaygain() const;
+	void			set_replaygain(const replaygain_info & p_info);
+
+protected:
+	t_size	meta_set_nocheck_ex(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
+	t_size	info_set_nocheck_ex(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
+
+	file_info_impl_utils::meta_storage m_meta;
+	file_info_impl_utils::info_storage m_info;
+	
+
+	double m_length = 0;
+
+	replaygain_info m_replaygain;
+};