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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6148 | serge | 1 | /* |
| 2 | * This file is part of FFmpeg. |
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| 3 | * |
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| 4 | * FFmpeg is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Lesser General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2.1 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * FFmpeg is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Lesser General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Lesser General Public |
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| 15 | * License along with FFmpeg; if not, write to the Free Software |
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| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 17 | */ |
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| 18 | |||
| 19 | /** |
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| 20 | * @file |
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| 21 | * audio volume filter |
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| 22 | */ |
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| 23 | |||
| 24 | #ifndef AVFILTER_AF_VOLUME_H |
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| 25 | #define AVFILTER_AF_VOLUME_H |
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| 26 | |||
| 27 | #include "libavutil/common.h" |
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| 28 | #include "libavutil/float_dsp.h" |
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| 29 | #include "libavutil/opt.h" |
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| 30 | #include "libavutil/samplefmt.h" |
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| 31 | |||
| 32 | enum PrecisionType { |
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| 33 | PRECISION_FIXED = 0, |
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| 34 | PRECISION_FLOAT, |
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| 35 | PRECISION_DOUBLE, |
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| 36 | }; |
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| 37 | |||
| 38 | typedef struct VolumeContext { |
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| 39 | const AVClass *class; |
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| 40 | AVFloatDSPContext fdsp; |
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| 41 | enum PrecisionType precision; |
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| 42 | double volume; |
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| 43 | int volume_i; |
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| 44 | int channels; |
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| 45 | int planes; |
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| 46 | enum AVSampleFormat sample_fmt; |
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| 47 | |||
| 48 | void (*scale_samples)(uint8_t *dst, const uint8_t *src, int nb_samples, |
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| 49 | int volume); |
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| 50 | int samples_align; |
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| 51 | } VolumeContext; |
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| 52 | |||
| 53 | void ff_volume_init_x86(VolumeContext *vol); |
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| 54 | |||
| 55 | #endif /* AVFILTER_AF_VOLUME_H */ |