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C/C++ Source or Header  |  1995-09-01  |  401 b   |  14 lines
  1. /*
  2. ** adpcm.h - include file for adpcm coder.
  3. **
  4. ** Version 1.0, 7-Jul-92.
  5. */
  6.  
  7. struct adpcm_state {
  8.     short       valprev;        /* Previous output value */
  9.     char        index;          /* Index into stepsize table */
  10. };
  11.  
  12. extern void adpcm_coder_u(unsigned char[], char[], int, struct adpcm_state *);
  13. extern void adpcm_decoder_u(char[], unsigned char[], int, struct adpcm_state *);
  14.