2 * This file is part of FFmpeg.
4 * FFmpeg 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.
9 * FFmpeg 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.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #ifndef AVFILTER_VOLUME_H
25 #define AVFILTER_VOLUME_H
27 #include "libavutil/common.h"
28 #include "libavutil/eval.h"
29 #include "libavutil/float_dsp.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/samplefmt.h"
48 VAR_NB_CONSUMED_SAMPLES,
68 typedef struct VolumeContext {
70 AVFloatDSPContext *fdsp;
73 const char *volume_expr;
75 double var_values[VAR_VARS_NB];
78 double replaygain_preamp;
79 int replaygain_noclip;
84 enum AVSampleFormat sample_fmt;
86 void (*scale_samples)(uint8_t *dst, const uint8_t *src, int nb_samples,
91 void ff_volume_init_x86(VolumeContext *vol);
93 #endif /* AVFILTER_VOLUME_H */