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packtau.c
Package: celp32c.rar [view]
Upload User: tsjrly
Upload Date: 2021-02-19
Package Size: 107k
Code Size: 1k
Category:
Voice Compress
Development Platform:
C/C++
- /**************************************************************************
- *
- * ROUTINE
- * packtau (pack tau into binaru bit stream)
- *
- * FUNCTION
- * Input decimal value and number of binary bits,
- * program returns binary value packed in array.
- *
- * SYNOPSIS
- * subroutine packtau(value, bits, pdencode, array, pointer)
- *
- * formal
- *
- * data I/O
- * name type type function
- * -------------------------------------------------------------------
- * value int I decimal value
- * bits int I number of bits to convert to
- * (ie. 01001 for 5 bits, 1st 0 incl.)
- * pdencode int I pitch delay indexing table
- * array short O array to which one bit is assigned
- * for binary representation
- * pointer int * I/O points to appropriate element in
- * array
- *
- ***************************************************************************
- *
- * DESCRIPTION
- *
- * This program packs a decimal value into a binary value
- * to be decoded by unpacktau.c in CELP synthesizer sections.
- *
- ***************************************************************************
- *
- * CALLED BY
- *
- * celp
- *
- * CALLS
- *
- *
- *
- **************************************************************************/
- packtau(value, bits, pdencode, array, pointer)
- int value, pdencode[], bits, *pointer;
- short array[];
- {
- int i;
- /* *change index to permuted index */
- value = pdencode[value];
- /* insert in bitstream */
- for (i = 0; i < bits; (*pointer)++, i++)
- array[*pointer] = (value & 1 << i) >> i;
- }