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1 #pragma once
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2 #include "file_info_impl.h"
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3
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4 // Not everything is on #ifdef FOOBAR2000_HAVE_CHAPTERIZER
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5 // Some things use chapter_list internally even if chapterizer is disabled
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6
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7 //! Interface for object storing list of chapters.
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8 class NOVTABLE chapter_list {
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9 public:
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10 //! Returns number of chapters.
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11 virtual t_size get_chapter_count() const = 0;
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12 //! Queries description of specified chapter.
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13 //! @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).
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14 //! @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.
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15 virtual const file_info & get_info(t_size p_chapter) const = 0;
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16
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17 //! Sets number of chapters.
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18 virtual void set_chapter_count(t_size p_count) = 0;
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19 //! Modifies description of specified chapter.
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20 //! @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).
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21 //! @param p_info New chapter description. Note that length part of file_info is used to calculate chapter marks.
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22 virtual void set_info(t_size p_chapter,const file_info & p_info) = 0;
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23
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24 //! Gets first track pregap - offset into audio at which first track begins.
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25 //! Not every chapterizer supports this, see chapterizer::supports_pregaps()
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26 virtual double get_pregap() const = 0;
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27 //! Sets first track pregap - offset into audio at which first track begins.
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28 //! Not every chapterizer supports this, see chapterizer::supports_pregaps()
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29 virtual void set_pregap(double val) = 0;
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30
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31 //! Copies contents of specified chapter_list object to this object.
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32 void copy(const chapter_list & p_source);
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33
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34 inline const chapter_list & operator=(const chapter_list & p_source) {copy(p_source); return *this;}
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35
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36 protected:
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37 chapter_list() {}
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38 ~chapter_list() {}
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39 };
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40
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41 //! Implements chapter_list.
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42 template<typename file_info_ = file_info_impl>
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43 class chapter_list_impl_t : public chapter_list {
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44 public:
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45 chapter_list_impl_t() {}
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46 typedef chapter_list_impl_t<file_info_> t_self;
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47 chapter_list_impl_t(const chapter_list & p_source) : m_pregap() {copy(p_source);}
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48 const t_self & operator=(const chapter_list & p_source) {copy(p_source); return *this;}
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49
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50 t_size get_chapter_count() const {return m_infos.get_size();}
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51 const file_info & get_info(t_size p_chapter) const {return m_infos[p_chapter];}
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52
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53 void set_chapter_count(t_size p_count) {m_infos.set_size(p_count);}
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54 void set_info(t_size p_chapter,const file_info & p_info) {m_infos[p_chapter] = p_info;}
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55 file_info_ & get_info_(t_size p_chapter) {return m_infos[p_chapter];}
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56
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57 double get_pregap() const {return m_pregap;}
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58 void set_pregap(double val) {PFC_ASSERT(val >= 0); m_pregap = val;}
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59 private:
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60 pfc::array_t<file_info_> m_infos;
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61 double m_pregap = 0;
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62 };
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63
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64 typedef chapter_list_impl_t<> chapter_list_impl;
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65
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66 #ifdef FOOBAR2000_HAVE_CHAPTERIZER
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67
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68 //! 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.
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69 class NOVTABLE chapterizer : public service_base {
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70 FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT(chapterizer);
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71 public:
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72 //! Tests whether specified path is supported by this implementation.
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73 virtual bool is_our_path(const char * p_path) = 0;
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74
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75 //! Writes new chapter list to specified file.
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76 //! @param p_path Path of file to modify.
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77 //! @param p_list New chapter list to write.
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78 //! @param p_abort abort_callback object signaling user aborting the operation.
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79 virtual void set_chapters(const char * p_path,chapter_list const & p_list,abort_callback & p_abort) = 0;
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80 //! Retrieves chapter list from specified file.
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81 //! @param p_path Path of file to examine.
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82 //! @param p_list Object receiving chapter list.
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83 //! @param p_abort abort_callback object signaling user aborting the operation.
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84 virtual void get_chapters(const char * p_path,chapter_list & p_list,abort_callback & p_abort) = 0;
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85
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86 //! @returns Whether this chapterizer supports altering pregap before first track, see chapter_list::get_pregap() & set_pregap()
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87 virtual bool supports_pregaps() = 0;
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88
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89 //! Static helper, tries to find chapterizer interface that supports specified file.
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90 static bool g_find(service_ptr_t<chapterizer> & p_out,const char * p_path);
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91
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92 static bool g_is_pregap_capable(const char * p_path);
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93 };
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94
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95 #endif
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