mplexhi/bits.h

   1 /* bitstream stuff */
   2 #define BUFFER_SIZE   4096
   3 #define TRUE 1
   4 #define FALSE 0
   5
   6 typedef long long bitcount_t;
   7
   8 struct _bitstream {
   9   unsigned char *bfr;
  10   unsigned char outbyte;
  11   int byteidx;
  12   int bitidx;
  13   int bufcount;
  14   fpos_t actpos;
  15   bitcount_t totbits;
  16   FILE *bitfile;
  17   int eobs;
  18   int fileOutError;
  19 };
  20
  21 typedef struct _bitstream bitstream;
  22 typedef struct _bitstream Bit_stream_struc;
  23
  24 /* bits */
  25 int init_putbits(bitstream *bs, char *bs_filename);
  26 void finish_putbits(bitstream *bs);
  27 int init_getbits(bitstream *bs, char *bs_filename);
  28 void finish_getbits(bitstream *bs);
  29 unsigned int get1bit(bitstream *bs);
  30 unsigned int getbits(bitstream *bs, int N);
  31 void putbits(bitstream *bs, int val, int n);
  32 void put1bit(bitstream *bs, int val);
  33 void alignbits(bitstream *bs);
  34 void prepareundo(bitstream *bs, bitstream *undo);
  35 void undochanges(bitstream *bs, bitstream *old);
  36 bitcount_t bitcount(bitstream *bs);
  37 int end_bs(bitstream *bs);
  38 int seek_sync(bitstream *bs, unsigned int sync, int N);