diff options
Diffstat (limited to 'codecs/ilbc/LPCdecode.h')
-rwxr-xr-x | codecs/ilbc/LPCdecode.h | 86 |
1 files changed, 44 insertions, 42 deletions
diff --git a/codecs/ilbc/LPCdecode.h b/codecs/ilbc/LPCdecode.h index f57264882..1f55a622e 100755 --- a/codecs/ilbc/LPCdecode.h +++ b/codecs/ilbc/LPCdecode.h @@ -1,42 +1,44 @@ - -/****************************************************************** - - iLBC Speech Coder ANSI-C Source Code - - LPC_decode.h - - Copyright (c) 2001, - Global IP Sound AB. - All rights reserved. - -******************************************************************/ - -#ifndef __iLBC_LPC_DECODE_H -#define __iLBC_LPC_DECODE_H - -void LSFinterpolate2a_dec( - float *a, /* (o) lpc coefficients for a sub frame */ - float *lsf1, /* (i) first lsf coefficient vector */ - float *lsf2, /* (i) second lsf coefficient vector */ - float coef, /* (i) interpolation weight */ - int length /* (i) length of lsf vectors */ -); - -void SimplelsfDEQ( - float *lsfdeq, /* (o) dequantized lsf coefficients */ - int *index /* (i) quantization index */ -); - -void DecoderInterpolateLSF( - float *syntdenum, /* (o) synthesis filter coefficients */ - float *weightdenum, /* (o) weighting denumerator - coefficients */ - float *lsfdeq, /* (i) dequantized lsf coefficients */ - int length, /* (i) length of lsf coefficient vector */ - iLBC_Dec_Inst_t *iLBCdec_inst - /* (i) the decoder state structure */ -); - -#endif - - + +/****************************************************************** + + iLBC Speech Coder ANSI-C Source Code + + LPC_decode.h + + Copyright (C) The Internet Society (2004). + All Rights Reserved. + +******************************************************************/ + +#ifndef __iLBC_LPC_DECODE_H +#define __iLBC_LPC_DECODE_H + +void LSFinterpolate2a_dec( + + + float *a, /* (o) lpc coefficients for a sub-frame */ + float *lsf1, /* (i) first lsf coefficient vector */ + float *lsf2, /* (i) second lsf coefficient vector */ + float coef, /* (i) interpolation weight */ + int length /* (i) length of lsf vectors */ +); + +void SimplelsfDEQ( + float *lsfdeq, /* (o) dequantized lsf coefficients */ + int *index, /* (i) quantization index */ + int lpc_n /* (i) number of LPCs */ +); + +void DecoderInterpolateLSF( + float *syntdenum, /* (o) synthesis filter coefficients */ + float *weightdenum, /* (o) weighting denumerator + coefficients */ + float *lsfdeq, /* (i) dequantized lsf coefficients */ + int length, /* (i) length of lsf coefficient vector */ + iLBC_Dec_Inst_t *iLBCdec_inst + /* (i) the decoder state structure */ +); + +#endif + + |