PeerStreamer

/**

 * LPC utility code

 * Copyright (c) 2006  Justin Ruggles <jruggle@earthlink.net>

 *

 * This file is part of FFmpeg.

 *

 * FFmpeg is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * FFmpeg is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with FFmpeg; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

#ifndef FFMPEG_LPC_H

#define FFMPEG_LPC_H

#include <inttypes.h>

#define ORDER_METHOD_EST     0

#define ORDER_METHOD_2LEVEL  1

#define ORDER_METHOD_4LEVEL  2

#define ORDER_METHOD_8LEVEL  3

#define ORDER_METHOD_SEARCH  4

#define ORDER_METHOD_LOG     5

#define MIN_LPC_ORDER        1

#define MAX_LPC_ORDER       32

/**

 * Calculate LPC coefficients for multiple orders

 */

int ff_lpc_calc_coefs(DSPContext *s,

                      const int32_t *samples, int blocksize, int max_order,

                      int precision, int32_t coefs[][MAX_LPC_ORDER],

                      int *shift, int use_lpc, int omethod, int max_shift, int zero_shift);

#endif /* FFMPEG_LPC_H */