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-rw-r--r--thirdparties/win32/include/ilbc/helpfun.h107
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diff --git a/thirdparties/win32/include/ilbc/helpfun.h b/thirdparties/win32/include/ilbc/helpfun.h
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+ /******************************************************************
+
+ iLBC Speech Coder ANSI-C Source Code
+
+ helpfun.h
+
+ Copyright (C) The Internet Society (2004).
+ All Rights Reserved.
+
+ ******************************************************************/
+
+ #ifndef __iLBC_HELPFUN_H
+ #define __iLBC_HELPFUN_H
+
+ void autocorr(
+ float *r, /* (o) autocorrelation vector */
+ const float *x, /* (i) data vector */
+ int N, /* (i) length of data vector */
+ int order /* largest lag for calculated
+ autocorrelations */
+ );
+
+ void window(
+ float *z, /* (o) the windowed data */
+ const float *x, /* (i) the original data vector */
+ const float *y, /* (i) the window */
+ int N /* (i) length of all vectors */
+ );
+
+ void levdurb(
+ float *a, /* (o) lpc coefficient vector starting
+ with 1.0 */
+ float *k, /* (o) reflection coefficients */
+ float *r, /* (i) autocorrelation vector */
+ int order /* (i) order of lpc filter */
+ );
+
+ void interpolate(
+
+
+
+
+
+
+ float *out, /* (o) the interpolated vector */
+ float *in1, /* (i) the first vector for the
+ interpolation */
+ float *in2, /* (i) the second vector for the
+ interpolation */
+ float coef, /* (i) interpolation weights */
+ int length /* (i) length of all vectors */
+ );
+
+ void bwexpand(
+ float *out, /* (o) the bandwidth expanded lpc
+ coefficients */
+ float *in, /* (i) the lpc coefficients before bandwidth
+ expansion */
+ float coef, /* (i) the bandwidth expansion factor */
+ int length /* (i) the length of lpc coefficient vectors */
+ );
+
+ void vq(
+ float *Xq, /* (o) the quantized vector */
+ int *index, /* (o) the quantization index */
+ const float *CB,/* (i) the vector quantization codebook */
+ float *X, /* (i) the vector to quantize */
+ int n_cb, /* (i) the number of vectors in the codebook */
+ int dim /* (i) the dimension of all vectors */
+ );
+
+ void SplitVQ(
+ float *qX, /* (o) the quantized vector */
+ int *index, /* (o) a vector of indexes for all vector
+ codebooks in the split */
+ float *X, /* (i) the vector to quantize */
+ const float *CB,/* (i) the quantizer codebook */
+ int nsplit, /* the number of vector splits */
+ const int *dim, /* the dimension of X and qX */
+ const int *cbsize /* the number of vectors in the codebook */
+ );
+
+
+ void sort_sq(
+ float *xq, /* (o) the quantized value */
+ int *index, /* (o) the quantization index */
+ float x, /* (i) the value to quantize */
+ const float *cb,/* (i) the quantization codebook */
+ int cb_size /* (i) the size of the quantization codebook */
+ );
+
+ int LSF_check( /* (o) 1 for stable lsf vectors and 0 for
+
+
+
+
+
+
+ nonstable ones */
+ float *lsf, /* (i) a table of lsf vectors */
+ int dim, /* (i) the dimension of each lsf vector */
+ int NoAn /* (i) the number of lsf vectors in the
+ table */
+ );
+
+ #endif
+
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