| Benny Prijono | c585988 | 2006-07-31 15:25:14 +0000 | [diff] [blame] | 1 | |
| 2 | /****************************************************************** |
| 3 | |
| 4 | iLBC Speech Coder ANSI-C Source Code |
| 5 | |
| 6 | LPC_decode.h |
| 7 | |
| 8 | Copyright (C) The Internet Society (2004). |
| 9 | All Rights Reserved. |
| 10 | |
| 11 | ******************************************************************/ |
| 12 | |
| 13 | #ifndef __iLBC_LPC_DECODE_H |
| 14 | #define __iLBC_LPC_DECODE_H |
| 15 | |
| 16 | void LSFinterpolate2a_dec( |
| 17 | float *a, /* (o) lpc coefficients for a sub-frame */ |
| 18 | float *lsf1, /* (i) first lsf coefficient vector */ |
| 19 | float *lsf2, /* (i) second lsf coefficient vector */ |
| 20 | float coef, /* (i) interpolation weight */ |
| 21 | int length /* (i) length of lsf vectors */ |
| 22 | ); |
| 23 | |
| 24 | void SimplelsfDEQ( |
| 25 | float *lsfdeq, /* (o) dequantized lsf coefficients */ |
| 26 | int *index, /* (i) quantization index */ |
| 27 | int lpc_n /* (i) number of LPCs */ |
| 28 | ); |
| 29 | |
| 30 | void DecoderInterpolateLSF( |
| 31 | float *syntdenum, /* (o) synthesis filter coefficients */ |
| 32 | float *weightdenum, /* (o) weighting denumerator |
| 33 | coefficients */ |
| 34 | float *lsfdeq, /* (i) dequantized lsf coefficients */ |
| 35 | int length, /* (i) length of lsf coefficient vector */ |
| 36 | iLBC_Dec_Inst_t *iLBCdec_inst |
| 37 | /* (i) the decoder state structure */ |
| 38 | ); |
| 39 | |
| 40 | #endif |
| 41 | |
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