Category : Printer + Display Graphics
Archive   : TIFGIF.ZIP
Filename : COMPRESS.H

short Compress_Data( short min_code_size,
short (*get_byte_routine)(void),
short (*put_byte_routine)(unsigned char) );
/*
* Function:
* Compress a stream of data bytes using the LZW algorithm.
*
* Inputs:
* min_code_size
* the field size of an input value. Should be in the range from
* 1 to 9.
*
* get_byte_routine
* address of the caller's "get_byte" routine:
*
* status = get_byte();
*
* where "status" is
* 0 .. 255 the byte just read
* -1 logical end-of-file
* < -3 error codes
*
* put_byte_routine
* address the the caller's "put_byte" routine:
*
* status = put_byte(value)
*
* where
* value the byte to write
* status 0 = OK, else < -3 means some error code
*
* Returns:
* 0 normal completion
* -1 (not used)
* -2 insufficient dynamic memory
* -3 bad "min_code_size"
* < -3 error status from either the get_byte or put_byte routine
*/