3 * Copyright (c) 2006 Justin Ruggles <jruggle@earthlink.net>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #define ORDER_METHOD_EST 0
28 #define ORDER_METHOD_2LEVEL 1
29 #define ORDER_METHOD_4LEVEL 2
30 #define ORDER_METHOD_8LEVEL 3
31 #define ORDER_METHOD_SEARCH 4
32 #define ORDER_METHOD_LOG 5
34 #define MIN_LPC_ORDER 1
35 #define MAX_LPC_ORDER 32
39 * Calculate LPC coefficients for multiple orders
41 int ff_lpc_calc_coefs(DSPContext *s,
42 const int32_t *samples, int blocksize, int max_order,
43 int precision, int32_t coefs[][MAX_LPC_ORDER],
44 int *shift, int use_lpc, int omethod, int max_shift, int zero_shift);
46 #endif /* FFMPEG_LPC_H */