path: root/audio_codec/libamr/dec_lpc.h (plain)
blob: a58a755de002b5525fb29b92379cc371beaff17e

1	/*
2	*===================================================================
3	* 3GPP AMR Wideband Floating-point Speech Codec
4	*===================================================================
5	*/
6	#ifndef DEC_LPC_H
7	#define DEC_LPC_H
8
9	#include "typedef.h"
10
11	void D_LPC_isf_noise_d(Word16 *indice, Word16 *isf_q);
12	void D_LPC_isf_isp_conversion(Word16 isf[], Word16 isp[], Word16 m);
13	void D_LPC_isp_a_conversion(Word16 isp[], Word16 a[], Word32 adaptive_scaling,
14	Word16 m);
15	void D_LPC_a_weight(Word16 a[], Word16 ap[], Word16 gamma, Word16 m);
16	void D_LPC_isf_2s3s_decode(Word16 *indice, Word16 *isf_q, Word16* past_isfq,
17	Word16 *isfold, Word16 *isf_buf, Word16 bfi);
18	void D_LPC_isf_2s5s_decode(Word16 *indice, Word16 *isf_q, Word16 *past_isfq,
19	Word16 *isfold, Word16 *isf_buf, Word16 bfi);
20	void D_LPC_int_isp_find(Word16 isp_old[], Word16 isp_new[],
21	const Word16 frac[], Word16 Az[]);
22	void D_LPC_isf_extrapolation(Word16 HfIsf[]);
23
24	#endif
25
26