Imported Debian version 2.5.2~trusty
[deb_ffmpeg.git] / ffmpeg / libswresample / resample.h
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2ba45a60
DM
1/*
2 * audio resampling
3 * Copyright (c) 2004-2012 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22#ifndef SWRESAMPLE_RESAMPLE_H
23#define SWRESAMPLE_RESAMPLE_H
24
25#include "libavutil/log.h"
26#include "libavutil/samplefmt.h"
27
28#include "swresample_internal.h"
29
30typedef struct ResampleContext {
31 const AVClass *av_class;
32 uint8_t *filter_bank;
33 int filter_length;
34 int filter_alloc;
35 int ideal_dst_incr;
36 int dst_incr;
37 int dst_incr_div;
38 int dst_incr_mod;
39 int index;
40 int frac;
41 int src_incr;
42 int compensation_distance;
43 int phase_shift;
44 int phase_mask;
45 int linear;
46 enum SwrFilterType filter_type;
47 int kaiser_beta;
48 double factor;
49 enum AVSampleFormat format;
50 int felem_size;
51 int filter_shift;
52
53 struct {
54 void (*resample_one)(void *dst, const void *src,
55 int n, int64_t index, int64_t incr);
56 int (*resample)(struct ResampleContext *c, void *dst,
57 const void *src, int n, int update_ctx);
58 } dsp;
59} ResampleContext;
60
61void swri_resample_dsp_init(ResampleContext *c);
62void swri_resample_dsp_x86_init(ResampleContext *c);
63
64#endif /* SWRESAMPLE_RESAMPLE_H */