h264_metadata: Add option to delete filler data
[libav.git] / libavfilter / af_volume.h
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1/*
2 * This file is part of Libav.
3 *
4 * Libav is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * Libav is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19/**
20 * @file
21 * audio volume filter
22 */
23
24#ifndef AVFILTER_AF_VOLUME_H
25#define AVFILTER_AF_VOLUME_H
26
27#include "libavutil/common.h"
28#include "libavutil/float_dsp.h"
29#include "libavutil/opt.h"
30#include "libavutil/samplefmt.h"
31
32enum PrecisionType {
33 PRECISION_FIXED = 0,
34 PRECISION_FLOAT,
35 PRECISION_DOUBLE,
36};
37
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38enum ReplayGainType {
39 REPLAYGAIN_DROP,
40 REPLAYGAIN_IGNORE,
41 REPLAYGAIN_TRACK,
42 REPLAYGAIN_ALBUM,
43};
44
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45typedef struct VolumeContext {
46 const AVClass *class;
47 AVFloatDSPContext fdsp;
48 enum PrecisionType precision;
06c3cd3c 49 enum ReplayGainType replaygain;
a49aa440 50 double replaygain_preamp;
aaab192d 51 int replaygain_noclip;
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52 double volume;
53 int volume_i;
54 int channels;
55 int planes;
56 enum AVSampleFormat sample_fmt;
57
58 void (*scale_samples)(uint8_t *dst, const uint8_t *src, int nb_samples,
59 int volume);
60 int samples_align;
61} VolumeContext;
62
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63void ff_volume_init_x86(VolumeContext *vol);
64
b384e031 65#endif /* AVFILTER_AF_VOLUME_H */