Initial community commit

Src/replicant/nsmp3dec/mp3ancofl.h

@@ -0,0 +1,86 @@
+/***************************************************************************\
+*
+*                    MPEG Layer3-Audio Decoder
+*                  <20> 1997-2006 by Fraunhofer IIS
+*                        All Rights Reserved
+*
+*   filename: mp3ancofl.h
+*   project : MPEG Decoder
+*   author  : Dieter Weninger
+*   date    : 2003-05-14
+*   contents: ancillary data and original file length - HEADER
+*
+\***************************************************************************/
+#ifndef __MP3ANCOFL_H__
+#define __MP3ANCOFL_H__
+
+#include "mpegbitstream.h"
+
+#define ID_OFL 0xB
+#define VERSION_0_LEN 8  /* bytes */
+#define VERSION_1_LEN 10 /* bytes */
+
+class CMp3AncOfl
+{
+ public:
+  CMp3AncOfl(CBitStream &__Db);
+  ~CMp3AncOfl();
+
+  void Reset(void);
+
+  int	       getVersion(void);
+  unsigned int getTotalLength(void);
+  unsigned int getCodecDelay(void);
+  unsigned int getAddDelay(void);
+
+  bool validOfl(void);
+
+  void fetchOfl(int oflOn,
+                CBitStream &Db,
+                int beforeScf,
+                unsigned int* startDelay,
+                unsigned int* totalLength);
+
+  int  readAnc(unsigned char *ancBytes,
+               CBitStream  &Db,
+               const int numAncBits);
+
+  int doReadBytes(){return m_readBytes;}
+
+ private:
+  void crcOfl(unsigned short crcPoly,
+              unsigned short crcMask,
+              unsigned long *crc,
+              unsigned char byte);
+
+  void cleanUp(void);
+  bool isFhGAnc( int size);
+  bool readOfl(CBitStream &Db, int beforeScaleFactors);
+  bool isOfl(void);
+  bool justSearched(void);
+  int  toSkip(void);
+  void getOfl(CBitStream &Db, const int len);
+
+  CBitStream     &m_Db;   // dynamic buffer
+
+  unsigned char oflArray[10];
+
+  bool m_valid;
+  bool m_searched;
+  bool m_semaphor;
+  bool m_FhGAncChecked;
+  bool m_collecting;
+  bool m_mp3pro;
+
+  unsigned char* m_FhGAncBuf;
+  unsigned char* m_tmpAncBuf;
+
+  int m_pFhGAncBuf;
+  int m_FhGAncBufSize;
+
+  // flag signalling byte- or bit-wise reading
+  int m_readBytes;
+
+};
+
+#endif /* __MP3ANCOFL_H__ */