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Copyright (C) 2008-2011 Nicolas Bourdaud <nicolas.bourdaud@epfl.ch>
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This file is part of the rtfilter library
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The rtfilter library is free software: you can redistribute it and/or
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modify it under the terms of the version 3 of the GNU Lesser General
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Public License as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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/* Data type specifications */
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#define RTF_PRECISION_MASK 1
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#define RTF_COMPLEX_MASK 2
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//! Handle to a filter. Used by all the functions to manipulate a filter.
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typedef const struct rtf_filter* hfilter;
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//! create a digital filter
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hfilter rtf_create_filter(unsigned int nchann, int proctype,
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unsigned int num_len, const void *num,
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unsigned int denum_len, const void *denum,
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//! filter chunk of data
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unsigned int rtf_filter(hfilter filt, const void* x, void* y,
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//! initialize a filter with particular data
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void rtf_init_filter(hfilter filt, const void* data);
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void rtf_destroy_filter(hfilter filt);
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//! Return the type of the input or output of a filter
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int rtf_get_type(hfilter filt, int in);
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// Creates a filter that downsample signals
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hfilter rtf_create_downsampler(unsigned int nch, int type, unsigned int r);
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//! Return the version of the library in a string
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size_t rtf_get_version(char* string, size_t len, unsigned int line);
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src/rtfilter.h
