diff options
author | Mark Spencer <markster@digium.com> | 2003-04-15 04:36:52 +0000 |
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committer | Mark Spencer <markster@digium.com> | 2003-04-15 04:36:52 +0000 |
commit | c4da749362b2842ba0478dcdb309c29dd353c795 (patch) | |
tree | 468bcd1944564d1b84b5a9d46b2eb437fe3c73a3 /codecs/ilbc/LPCdecode.h | |
parent | dbe00ec2d2029c61ffb7b58ee6184274058767f4 (diff) |
Add iLBC codec
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@852 65c4cc65-6c06-0410-ace0-fbb531ad65f3
Diffstat (limited to 'codecs/ilbc/LPCdecode.h')
-rwxr-xr-x | codecs/ilbc/LPCdecode.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/codecs/ilbc/LPCdecode.h b/codecs/ilbc/LPCdecode.h new file mode 100755 index 000000000..f57264882 --- /dev/null +++ b/codecs/ilbc/LPCdecode.h @@ -0,0 +1,42 @@ + +/****************************************************************** + + 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 + + |