git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@852 65c4cc65-6c06-0410-ace0-fbb531ad65f3
43 lines
1.3 KiB
C
Executable file
43 lines
1.3 KiB
C
Executable file
|
|
/******************************************************************
|
|
|
|
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
|
|
|
|
|