--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/foobar2000/SDK/chapterizer.h	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,95 @@
+#pragma once
+#include "file_info_impl.h"
+
+// Not everything is on #ifdef FOOBAR2000_HAVE_CHAPTERIZER
+// Some things use chapter_list internally even if chapterizer is disabled
+
+//! Interface for object storing list of chapters.
+class NOVTABLE chapter_list {
+public:
+	//! Returns number of chapters.
+	virtual t_size get_chapter_count() const = 0;
+	//! Queries description of specified chapter.
+	//! @param p_chapter Index of chapter to query, greater or equal zero and less than get_chapter_count() value. If p_chapter value is out of valid range, results are undefined (e.g. crash).
+	//! @returns reference to file_info object describing specified chapter (length part of file_info indicates distance between beginning of this chapter and next chapter mark). Returned reference value for temporary use only, becomes invalid after any non-const operation on the chapter_list object.
+	virtual const file_info & get_info(t_size p_chapter) const = 0;
+	
+	//! Sets number of chapters.
+	virtual void set_chapter_count(t_size p_count) = 0;
+	//! Modifies description of specified chapter.
+	//! @param p_chapter Index of chapter to modify, greater or equal zero and less than get_chapter_count() value. If p_chapter value is out of valid range, results are undefined (e.g. crash).
+	//! @param p_info New chapter description. Note that length part of file_info is used to calculate chapter marks.
+	virtual void set_info(t_size p_chapter,const file_info & p_info) = 0;
+
+    //! Gets first track pregap - offset into audio at which first track begins.
+    //! Not every chapterizer supports this, see chapterizer::supports_pregaps()
+	virtual double get_pregap() const = 0;
+    //! Sets first track pregap - offset into audio at which first track begins.
+    //! Not every chapterizer supports this, see chapterizer::supports_pregaps()
+	virtual void set_pregap(double val) = 0;
+
+	//! Copies contents of specified chapter_list object to this object.
+	void copy(const chapter_list & p_source);
+	
+	inline const chapter_list & operator=(const chapter_list & p_source) {copy(p_source); return *this;}
+
+protected:
+	chapter_list() {}
+	~chapter_list() {}
+};
+
+//! Implements chapter_list.
+template<typename file_info_ = file_info_impl> 
+class chapter_list_impl_t : public chapter_list {
+public:
+	chapter_list_impl_t() {}
+	typedef chapter_list_impl_t<file_info_> t_self;
+	chapter_list_impl_t(const chapter_list & p_source) : m_pregap() {copy(p_source);}
+	const t_self & operator=(const chapter_list & p_source) {copy(p_source); return *this;}
+
+	t_size get_chapter_count() const {return m_infos.get_size();}
+	const file_info & get_info(t_size p_chapter) const {return m_infos[p_chapter];}
+
+	void set_chapter_count(t_size p_count) {m_infos.set_size(p_count);}
+	void set_info(t_size p_chapter,const file_info & p_info) {m_infos[p_chapter] = p_info;}
+	file_info_ & get_info_(t_size p_chapter) {return m_infos[p_chapter];}
+
+	double get_pregap() const {return m_pregap;}
+	void set_pregap(double val) {PFC_ASSERT(val >= 0); m_pregap = val;}
+private:
+	pfc::array_t<file_info_> m_infos;
+	double m_pregap = 0;
+};
+
+typedef chapter_list_impl_t<> chapter_list_impl;
+
+#ifdef FOOBAR2000_HAVE_CHAPTERIZER
+
+//! This service implements chapter list editing operations for various file formats, e.g. for MP4 chapters or CD images with embedded cuesheets. Used by converter "encode single file with chapters" feature.
+class NOVTABLE chapterizer : public service_base {
+	FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT(chapterizer);
+public:
+	//! Tests whether specified path is supported by this implementation.
+	virtual bool is_our_path(const char * p_path) = 0;
+	
+	//! Writes new chapter list to specified file.
+	//! @param p_path Path of file to modify.
+	//! @param p_list New chapter list to write.
+	//! @param p_abort abort_callback object signaling user aborting the operation.
+	virtual void set_chapters(const char * p_path,chapter_list const & p_list,abort_callback & p_abort) = 0;
+	//! Retrieves chapter list from specified file.
+	//! @param p_path Path of file to examine.
+	//! @param p_list Object receiving chapter list.
+	//! @param p_abort abort_callback object signaling user aborting the operation.
+	virtual void get_chapters(const char * p_path,chapter_list & p_list,abort_callback & p_abort) = 0;
+
+    //! @returns Whether this chapterizer supports altering pregap before first track, see chapter_list::get_pregap() & set_pregap()
+	virtual bool supports_pregaps() = 0;
+
+	//! Static helper, tries to find chapterizer interface that supports specified file.
+	static bool g_find(service_ptr_t<chapterizer> & p_out,const char * p_path);
+
+	static bool g_is_pregap_capable(const char * p_path);
+};
+
+#endif