diff options
Diffstat (limited to '1.2-netsec/codecs/ilbc/LPCdecode.h')
-rw-r--r-- | 1.2-netsec/codecs/ilbc/LPCdecode.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/1.2-netsec/codecs/ilbc/LPCdecode.h b/1.2-netsec/codecs/ilbc/LPCdecode.h new file mode 100644 index 000000000..1f55a622e --- /dev/null +++ b/1.2-netsec/codecs/ilbc/LPCdecode.h @@ -0,0 +1,44 @@ + +/****************************************************************** + + 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 + + |