metadata.h

wince下著名的视频播放器源码

			/** Constructs an object with copy control.  See
			 *  Prototype(::FLAC__StreamMetadata *object, bool copy).
			 */
			inline Padding(::FLAC__StreamMetadata *object, bool copy): Prototype(object, copy) { }

			~Padding();

			//@{
			/** Assign from another object.  Always performs a deep copy. */
			inline Padding &operator=(const Padding &object) { Prototype::operator=(object); return *this; }
			inline Padding &operator=(const ::FLAC__StreamMetadata &object) { Prototype::operator=(object); return *this; }
			inline Padding &operator=(const ::FLAC__StreamMetadata *object) { Prototype::operator=(object); return *this; }
			//@}

			/** Assigns an object with copy control.  See
			 *  Prototype::assign_object(::FLAC__StreamMetadata *object, bool copy).
			 */
			inline Padding &assign(::FLAC__StreamMetadata *object, bool copy) { Prototype::assign_object(object, copy); return *this; }

			//@{
			/** Check for equality, performing a deep compare by following pointers. */
			inline bool operator==(const Padding &object) const { return Prototype::operator==(object); }
			inline bool operator==(const ::FLAC__StreamMetadata &object) const { return Prototype::operator==(object); }
			inline bool operator==(const ::FLAC__StreamMetadata *object) const { return Prototype::operator==(object); }
			//@}

			//@{
			/** Check for inequality, performing a deep compare by following pointers. */
			inline bool operator!=(const Padding &object) const { return Prototype::operator!=(object); }
			inline bool operator!=(const ::FLAC__StreamMetadata &object) const { return Prototype::operator!=(object); }
			inline bool operator!=(const ::FLAC__StreamMetadata *object) const { return Prototype::operator!=(object); }
			//@}

			void set_length(unsigned length);
		};

		/** APPLICATION metadata block.
		 *  See <A HREF="../format.html#metadata_block_application">format specification</A>.
		 */
		class FLACPP_API Application : public Prototype {
		public:
			Application();
			//
			//@{
			/** Constructs a copy of the given object.  This form
			 *  always performs a deep copy.
			 */
			inline Application(const Application &object): Prototype(object) { }
			inline Application(const ::FLAC__StreamMetadata &object): Prototype(object) { }
			inline Application(const ::FLAC__StreamMetadata *object): Prototype(object) { }
			//@}

			/** Constructs an object with copy control.  See
			 *  Prototype(::FLAC__StreamMetadata *object, bool copy).
			 */
			inline Application(::FLAC__StreamMetadata *object, bool copy): Prototype(object, copy) { }

			~Application();

			//@{
			/** Assign from another object.  Always performs a deep copy. */
			inline Application &operator=(const Application &object) { Prototype::operator=(object); return *this; }
			inline Application &operator=(const ::FLAC__StreamMetadata &object) { Prototype::operator=(object); return *this; }
			inline Application &operator=(const ::FLAC__StreamMetadata *object) { Prototype::operator=(object); return *this; }
			//@}

			/** Assigns an object with copy control.  See
			 *  Prototype::assign_object(::FLAC__StreamMetadata *object, bool copy).
			 */
			inline Application &assign(::FLAC__StreamMetadata *object, bool copy) { Prototype::assign_object(object, copy); return *this; }

			//@{
			/** Check for equality, performing a deep compare by following pointers. */
			inline bool operator==(const Application &object) const { return Prototype::operator==(object); }
			inline bool operator==(const ::FLAC__StreamMetadata &object) const { return Prototype::operator==(object); }
			inline bool operator==(const ::FLAC__StreamMetadata *object) const { return Prototype::operator==(object); }
			//@}

			//@{
			/** Check for inequality, performing a deep compare by following pointers. */
			inline bool operator!=(const Application &object) const { return Prototype::operator!=(object); }
			inline bool operator!=(const ::FLAC__StreamMetadata &object) const { return Prototype::operator!=(object); }
			inline bool operator!=(const ::FLAC__StreamMetadata *object) const { return Prototype::operator!=(object); }
			//@}

			const FLAC__byte *get_id() const;
			const FLAC__byte *get_data() const;

			void set_id(const FLAC__byte value[4]);
			//! This form always copies \a data
			bool set_data(const FLAC__byte *data, unsigned length);
			bool set_data(FLAC__byte *data, unsigned length, bool copy);
		};

		/** SEEKTABLE metadata block.
		 *  See <A HREF="../format.html#metadata_block_seektable">format specification</A>.
		 */
		class FLACPP_API SeekTable : public Prototype {
		public:
			SeekTable();

			//@{
			/** Constructs a copy of the given object.  This form
			 *  always performs a deep copy.
			 */
			inline SeekTable(const SeekTable &object): Prototype(object) { }
			inline SeekTable(const ::FLAC__StreamMetadata &object): Prototype(object) { }
			inline SeekTable(const ::FLAC__StreamMetadata *object): Prototype(object) { }
			//@}

			/** Constructs an object with copy control.  See
			 *  Prototype(::FLAC__StreamMetadata *object, bool copy).
			 */
			inline SeekTable(::FLAC__StreamMetadata *object, bool copy): Prototype(object, copy) { }

			~SeekTable();

			//@{
			/** Assign from another object.  Always performs a deep copy. */
			inline SeekTable &operator=(const SeekTable &object) { Prototype::operator=(object); return *this; }
			inline SeekTable &operator=(const ::FLAC__StreamMetadata &object) { Prototype::operator=(object); return *this; }
			inline SeekTable &operator=(const ::FLAC__StreamMetadata *object) { Prototype::operator=(object); return *this; }
			//@}

			/** Assigns an object with copy control.  See
			 *  Prototype::assign_object(::FLAC__StreamMetadata *object, bool copy).
			 */
			inline SeekTable &assign(::FLAC__StreamMetadata *object, bool copy) { Prototype::assign_object(object, copy); return *this; }

			//@{
			/** Check for equality, performing a deep compare by following pointers. */
			inline bool operator==(const SeekTable &object) const { return Prototype::operator==(object); }
			inline bool operator==(const ::FLAC__StreamMetadata &object) const { return Prototype::operator==(object); }
			inline bool operator==(const ::FLAC__StreamMetadata *object) const { return Prototype::operator==(object); }
			//@}

			//@{
			/** Check for inequality, performing a deep compare by following pointers. */
			inline bool operator!=(const SeekTable &object) const { return Prototype::operator!=(object); }
			inline bool operator!=(const ::FLAC__StreamMetadata &object) const { return Prototype::operator!=(object); }
			inline bool operator!=(const ::FLAC__StreamMetadata *object) const { return Prototype::operator!=(object); }
			//@}

			unsigned get_num_points() const;
			::FLAC__StreamMetadata_SeekPoint get_point(unsigned index) const;

			//! See FLAC__metadata_object_seektable_set_point()
			void set_point(unsigned index, const ::FLAC__StreamMetadata_SeekPoint &point);

			//! See FLAC__metadata_object_seektable_insert_point()
			bool insert_point(unsigned index, const ::FLAC__StreamMetadata_SeekPoint &point);

			//! See FLAC__metadata_object_seektable_delete_point()
			bool delete_point(unsigned index);

			//! See FLAC__metadata_object_seektable_is_legal()
			bool is_legal() const;
		};

		/** VORBIS_COMMENT metadata block.
		 *  See <A HREF="../format.html#metadata_block_vorbis_comment">format specification</A>.
		 */
		class FLACPP_API VorbisComment : public Prototype {
		public:
			/** Convenience class for encapsulating Vorbis comment
			 *  entries.  An entry is a vendor string or a comment
			 *  field.  In the case of a vendor string, the field
			 *  name is undefined; only the field value is relevant.
			 *
			 *  A \a field as used in the methods refers to an
			 *  entire 'NAME=VALUE' string; for convenience the
			 *  string is NUL-terminated.  A length field is
			 *  required in the unlikely event that the value
			 *  contains contain embedded NULs.
			 *
			 *  A \a field_name is what is on the left side of the
			 *  first '=' in the \a field.  By definition it is ASCII
			 *  and so is NUL-terminated and does not require a
			 *  length to describe it.  \a field_name is undefined
			 *  for a vendor string entry.
			 *
			 *  A \a field_value is what is on the right side of the
			 *  first '=' in the \a field.  By definition, this may
			 *  contain embedded NULs and so a \a field_value_length
			 *  is required to describe it.  However in practice,
			 *  embedded NULs are not known to be used, so it is
			 *  generally safe to treat field values as NUL-
			 *  terminated UTF-8 strings.
			 *
			 *  Always check is_valid() after the constructor or operator=
			 *  to make sure memory was properly allocated and that the
			 *  Entry conforms to the Vorbis comment specification.
			 */
			class FLACPP_API Entry {
			public:
				Entry();

				Entry(const char *field, unsigned field_length);
				Entry(const char *field); // assumes \a field is NUL-terminated

				Entry(const char *field_name, const char *field_value, unsigned field_value_length);
				Entry(const char *field_name, const char *field_value); // assumes \a field_value is NUL-terminated

				Entry(const Entry &entry);

				Entry &operator=(const Entry &entry);

				virtual ~Entry();

				virtual bool is_valid() const;

				unsigned get_field_length() const;
				unsigned get_field_name_length() const;
				unsigned get_field_value_length() const;

				::FLAC__StreamMetadata_VorbisComment_Entry get_entry() const;
				const char *get_field() const;
				const char *get_field_name() const;
				const char *get_field_value() const;

				bool set_field(const char *field, unsigned field_length);
				bool set_field(const char *field); // assumes \a field is NUL-terminated
				bool set_field_name(const char *field_name);
				bool set_field_value(const char *field_value, unsigned field_value_length);
				bool set_field_value(const char *field_value); // assumes \a field_value is NUL-terminated
			protected:
				bool is_valid_;
				::FLAC__StreamMetadata_VorbisComment_Entry entry_;
				char *field_name_;
				unsigned field_name_length_;
				char *field_value_;
				unsigned field_value_length_;
			private:
				void zero();
				void clear();
				void clear_entry();
				void clear_field_name();
				void clear_field_value();
				void construct(const char *field, unsigned field_length);
				void construct(const char *field); // assumes \a field is NUL-terminated
				void construct(const char *field_name, const char *field_value, unsigned field_value_length);
				void construct(const char *field_name, const char *field_value); // assumes \a field_value is NUL-terminated
				void compose_field();
				void parse_field();
			};

			VorbisComment();

			//@{
			/** Constructs a copy of the given object.  This form
			 *  always performs a deep copy.
			 */
			inline VorbisComment(const VorbisComment &object): Prototype(object) { }
			inline VorbisComment(const ::FLAC__StreamMetadata &object): Prototype(object) { }
			inline VorbisComment(const ::FLAC__StreamMetadata *object): Prototype(object) { }
			//@}

			/** Constructs an object with copy control.  See
			 *  Prototype(::FLAC__StreamMetadata *object, bool copy).
			 */
			inline VorbisComment(::FLAC__StreamMetadata *object, bool copy): Prototype(object, copy) { }

			~VorbisComment();

			//@{
			/** Assign from another object.  Always performs a deep copy. */
			inline VorbisComment &operator=(const VorbisComment &object) { Prototype::operator=(object); return *this; }
			inline VorbisComment &operator=(const ::FLAC__StreamMetadata &object) { Prototype::operator=(object); return *this; }
			inline VorbisComment &operator=(const ::FLAC__StreamMetadata *object) { Prototype::operator=(object); return *this; }
			//@}

			/** Assigns an object with copy control.  See
			 *  Prototype::assign_object(::FLAC__StreamMetadata *object, bool copy).
			 */
			inline VorbisComment &assign(::FLAC__StreamMetadata *object, bool copy) { Prototype::assign_object(object, copy); return *this; }

			//@{
			/** Check for equality, performing a deep compare by following pointers. */
			inline bool operator==(const VorbisComment &object) const { return Prototype::operator==(object); }
			inline bool operator==(const ::FLAC__StreamMetadata &object) const { return Prototype::operator==(object); }
			inline bool operator==(const ::FLAC__StreamMetadata *object) const { return Prototype::operator==(object); }
			//@}

			//@{
			/** Check for inequality, performing a deep compare by following pointers. */
			inline bool operator!=(const VorbisComment &object) const { return Prototype::operator!=(object); }
			inline bool operator!=(const ::FLAC__StreamMetadata &object) const { return Prototype::operator!=(object); }
			inline bool operator!=(const ::FLAC__StreamMetadata *object) const { return Prototype::operator!=(object); }
			//@}

			unsigned get_num_comments() const;
			const FLAC__byte *get_vendor_string() const; // NUL-terminated UTF-8 string
			Entry get_comment(unsigned index) const;

			//! See FLAC__metadata_object_vorbiscomment_set_vendor_string()
			bool set_vendor_string(const FLAC__byte *string); // NUL-terminated UTF-8 string

			//! See FLAC__metadata_object_vorbiscomment_set_comment()
			bool set_comment(unsigned index, const Entry &entry);

			//! See FLAC__metadata_object_vorbiscomment_insert_comment()
			bool insert_comment(unsigned index, const Entry &entry);

			//! See FLAC__metadata_object_vorbiscomment_append_comment()
			bool append_comment(const Entry &entry);

			//! See FLAC__metadata_object_vorbiscomment_delete_comment()
			bool delete_comment(unsigned index);
		};

		/** CUESHEET metadata block.
		 *  See <A HREF="../format.html#metadata_block_cuesheet">format specification</A>.
		 */
		class FLACPP_API CueSheet : public Prototype {
		public:
			/** Convenience class for encapsulating a cue sheet
			 *  track.
			 *
			 *  Always check is_valid() after the constructor or operator=
			 *  to make sure memory was properly allocated.
			 */
			class FLACPP_API Track {
			protected:
				::FLAC__StreamMetadata_CueSheet_Track *object_;
			public:
				Track();
				Track(const ::FLAC__StreamMetadata_CueSheet_Track *track);
				Track(const Track &track);
				Track &operator=(const Track &track);

				virtual ~Track();

				virtual bool is_valid() const;

				inline FLAC__uint64 get_offset() const { return object_->offset; }
				inline FLAC__byte get_number() const { return object_->number; }
				inline const char *get_isrc() const { return object_->isrc; }
				inline unsigned get_type() const { return object_->type; }
				inline bool get_pre_emphasis() const { return object_->pre_emphasis; }

				inline FLAC__byte get_num_indices() const { return object_->num_indices; }
				::FLAC__StreamMetadata_CueSheet_Index get_index(unsigned i) const;

				inline const ::FLAC__StreamMetadata_CueSheet_Track *get_track() const { return object_; }

				inline void set_offset(FLAC__uint64 value) { object_->offset = value; }
				inline void set_number(FLAC__byte value) { object_->number = value; }