2004-10-14 05:15:48 +00:00
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/******************************************************************
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iLBC Speech Coder ANSI-C Source Code
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packing.h
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Copyright (C) The Internet Society (2004).
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All Rights Reserved.
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******************************************************************/
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#ifndef __PACKING_H
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#define __PACKING_H
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void packsplit(
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int *index, /* (i) the value to split */
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int *firstpart, /* (o) the value specified by most
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significant bits */
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int *rest, /* (o) the value specified by least
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significant bits */
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int bitno_firstpart, /* (i) number of bits in most
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significant part */
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int bitno_total /* (i) number of bits in full range
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of value */
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);
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void packcombine(
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int *index, /* (i/o) the msb value in the
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combined value out */
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int rest, /* (i) the lsb value */
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int bitno_rest /* (i) the number of bits in the
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lsb part */
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);
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void dopack(
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unsigned char **bitstream, /* (i/o) on entrance pointer to
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place in bitstream to pack
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new data, on exit pointer
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to place in bitstream to
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pack future data */
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int index, /* (i) the value to pack */
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int bitno, /* (i) the number of bits that the
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value will fit within */
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int *pos /* (i/o) write position in the
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current byte */
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);
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void unpack(
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unsigned char **bitstream, /* (i/o) on entrance pointer to
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place in bitstream to
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unpack new data from, on
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exit pointer to place in
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bitstream to unpack future
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data from */
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int *index, /* (o) resulting value */
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int bitno, /* (i) number of bits used to
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represent the value */
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int *pos /* (i/o) read position in the
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current byte */
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);
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#endif
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