mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-18 19:35:52 +01:00
87 lines
2.0 KiB
C
87 lines
2.0 KiB
C
|
/***************************************************************************\
|
|||
|
|
*
|
|||
|
|
* MPEG Layer3-Audio Decoder
|
|||
|
|
* <EFBFBD> 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__ */
|