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ffmpeg / libavcodec / lpc.h @ 9045f5e7

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/**
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 * LPC utility code
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 * Copyright (c) 2006  Justin Ruggles <jruggle@earthlink.net>
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg 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 GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef FFMPEG_LPC_H
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#define FFMPEG_LPC_H
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#include <inttypes.h>
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#define ORDER_METHOD_EST     0
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#define ORDER_METHOD_2LEVEL  1
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#define ORDER_METHOD_4LEVEL  2
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#define ORDER_METHOD_8LEVEL  3
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#define ORDER_METHOD_SEARCH  4
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#define ORDER_METHOD_LOG     5
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#define MIN_LPC_ORDER        1
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#define MAX_LPC_ORDER       32
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/**
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 * Calculate LPC coefficients for multiple orders
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 */
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int ff_lpc_calc_coefs(DSPContext *s,
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                      const int32_t *samples, int blocksize, int min_order,
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                      int max_order, int precision,
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                      int32_t coefs[][MAX_LPC_ORDER], int *shift, int use_lpc,
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                      int omethod, int max_shift, int zero_shift);
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#endif /* FFMPEG_LPC_H */