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80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
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/* this file is a part of amp software, (C) tomislav uzelac 1996,1997
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*/
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/* getbits.h
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*
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* Created by: tomislav uzelac Apr 1996
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*/
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/* gethdr() error codes
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*/
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#define GETHDR_ERR 0x1
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#define GETHDR_NS 0x2
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#define GETHDR_FL1 0x4
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#define GETHDR_FL2 0x8
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#define GETHDR_FF 0x10
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#define GETHDR_SYN 0x20
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#define GETHDR_EOF 0x30
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/* buffer for the 'bit reservoir'
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*/
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#define BUFFER_SIZE 4096
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#define BUFFER_AUX 2048
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extern unsigned char buffer[];
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extern int append,data,f_bdirty,bclean_bytes;
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/* exports
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*/
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extern int fillbfr(unsigned int advance);
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extern unsigned int getbits(int n);
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extern int gethdr(struct AUDIO_HEADER *header);
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extern void getcrc();
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extern void getinfo(struct AUDIO_HEADER *header,struct SIDE_INFO *info);
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extern int dummy_getinfo(int n);
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extern int rewind_stream(int nbytes);
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#ifdef GETBITS
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/* buffer, AUX is used in case of input buffer "overflow", and its contents
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* are copied to the beginning of the buffer
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*/
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unsigned char buffer[BUFFER_SIZE+BUFFER_AUX];
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/* buffer pointers: append counts in bytes, data in bits
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*/
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int append,data;
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/* bit reservoir stuff. f_bdirty must be set to TRUE when starting play!
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*/
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int f_bdirty,bclean_bytes;
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/* internal buffer, _bptr holds the position in _bits_
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*/
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static unsigned char _buffer[32];
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static int _bptr;
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/* buffer and bit manipulation functions
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*/
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static inline int _fillbfr(unsigned int size);
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static inline int readsync();
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static inline int get_input(unsigned char* bp, unsigned int size);
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static inline unsigned int _getbits(int n);
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int fillbfr(unsigned int advance);
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unsigned int getbits(int n);
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int dummy_getinfo(int n);
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int rewind_stream(int nbytes);
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/* header and side info parsing stuff
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*/
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static inline void parse_header(struct AUDIO_HEADER *header);
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static inline int header_sanity_check(struct AUDIO_HEADER *header);
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int gethdr(struct AUDIO_HEADER *header);
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void getcrc();
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void getinfo(struct AUDIO_HEADER *header,struct SIDE_INFO *info);
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#endif /* GETBITS */
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