Add FFMPEG_ prefix to all multiple inclusion guards.
[libav.git] / libavcodec / vorbis.h
1 /*
2 * copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef FFMPEG_VORBIS_H
22 #define FFMPEG_VORBIS_H
23
24 #include "avcodec.h"
25
26 extern const float ff_vorbis_floor1_inverse_db_table[256];
27 extern const float * ff_vorbis_vwin[8];
28
29 typedef struct {
30 uint_fast16_t x;
31 uint_fast16_t sort;
32 uint_fast16_t low;
33 uint_fast16_t high;
34 } floor1_entry_t;
35
36 void ff_vorbis_ready_floor1_list(floor1_entry_t * list, int values);
37 unsigned int ff_vorbis_nth_root(unsigned int x, unsigned int n); // x^(1/n)
38 int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, uint_fast32_t num);
39 void ff_vorbis_floor1_render_list(floor1_entry_t * list, int values, uint_fast16_t * y_list, int * flag, int multiplier, float * out, int samples);
40
41 #define ilog(i) av_log2(2*(i))
42
43 #endif /* FFMPEG_VORBIS_H */