| 0,0 → 1,55 |
|---|
| /* |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * audio volume filter |
| */ |
| |
| #ifndef AVFILTER_AF_VOLUME_H |
| #define AVFILTER_AF_VOLUME_H |
| |
| #include "libavutil/common.h" |
| #include "libavutil/float_dsp.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/samplefmt.h" |
| |
| enum PrecisionType { |
| PRECISION_FIXED = 0, |
| PRECISION_FLOAT, |
| PRECISION_DOUBLE, |
| }; |
| |
| typedef struct VolumeContext { |
| const AVClass *class; |
| AVFloatDSPContext fdsp; |
| enum PrecisionType precision; |
| double volume; |
| int volume_i; |
| int channels; |
| int planes; |
| enum AVSampleFormat sample_fmt; |
| |
| void (*scale_samples)(uint8_t *dst, const uint8_t *src, int nb_samples, |
| int volume); |
| int samples_align; |
| } VolumeContext; |
| |
| void ff_volume_init_x86(VolumeContext *vol); |
| |
| #endif /* AVFILTER_AF_VOLUME_H */ |