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diff --git a/Src/id3v2/id3_header_frame.h b/Src/id3v2/id3_header_frame.h
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+// The authors have released ID3Lib as Public Domain (PD) and claim no copyright,
+// patent or other intellectual property protection in this work. This means that
+// it may be modified, redistributed and used in commercial and non-commercial
+// software and hardware without restrictions. ID3Lib is distributed on an "AS IS"
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
+// 
+// The ID3Lib authors encourage improvements and optimisations to be sent to the
+// ID3Lib coordinator, currently Dirk Mahoney (dirk@id3.org). Approved
+// submissions may be altered, and will be included and released under these terms.
+// 
+// Mon Nov 23 18:34:01 1998
+
+
+#ifndef ID3LIB_HEADER_FRAME_H
+#define ID3LIB_HEADER_FRAME_H
+
+
+#include "id3_types.h"
+#include "id3_header.h"
+#include "id3_header_tag.h"
+#include "id3_field.h"
+
+
+#define ID3FL_TAGALTER_2_3 (1 << 15)
+#define ID3FL_FILEALTER_2_3 (1 << 14)
+#define ID3FL_SIGNED_2_3 (1 << 13)
+
+#define ID3FL_COMPRESSION_2_3 (1 << 7)
+#define ID3FL_ENCRYPTION_2_3 (1 << 6)
+#define ID3FL_GROUPING_2_3 (1 << 5)
+
+#define ID3FL_TAGALTER_2_4 (1 << 14)
+#define ID3FL_FILEALTER_2_4 (1 << 13)
+#define ID3FL_SIGNED_2_4 (1 << 12)
+
+#define ID3FL_COMPRESSION_2_4 (1 << 3)
+#define ID3FL_ENCRYPTION_2_4 (1 << 2)
+#define ID3FL_GROUPING_2_4 (1 << 6)
+#define ID3FL_UNSYNC_2_4 (1 << 1)
+
+#define ID3FL_DATA_LENGTH_2_4 (1 << 0)
+
+struct ID3_FrameAttr
+{
+	ID3_FrameAttr(void) : size(0), flags(0) { memset(&textID, 0, sizeof(textID)); }
+  ~ID3_FrameAttr(void) {}
+
+  char textID[5];
+  luint size;
+
+public:
+	void ClearUnSync(int version);
+	void SetFlags(luint _flags);
+	bool HasCompression(int version);
+	bool HasDataLength(int version);
+	bool HasEncryption(int version);
+	bool HasGrouping(int version);
+	bool HasUnsync(int version);
+private:
+  luint flags;
+};
+
+
+class ID3_FrameHeader : public ID3_Header
+{
+public:
+  virtual luint Size(void);
+  void SetFrameID(ID3_FrameID id);
+  luint GetFrameInfo(ID3_FrameAttr &attr, const uchar *buffer, size_t remSize);
+  virtual luint Render(uchar *buffer);
+
+  // *** PRIVATE INTERNAL DATA - DO NOT USE *** PRIVATE INTERNAL DATA - DO NOT USE ***
+
+protected:
+  ID3_FrameID frameID; // which frame are we the header for?
+};
+
+
+#endif
+
+