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95 lines
2.1 KiB
95 lines
2.1 KiB
/* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* audio volume filter |
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*/ |
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#ifndef AVFILTER_VOLUME_H |
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#define AVFILTER_VOLUME_H |
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#include <stdint.h> |
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#include "libavutil/eval.h" |
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#include "libavutil/float_dsp.h" |
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#include "libavutil/log.h" |
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#include "libavutil/samplefmt.h" |
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enum PrecisionType { |
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PRECISION_FIXED = 0, |
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PRECISION_FLOAT, |
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PRECISION_DOUBLE, |
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}; |
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enum EvalMode { |
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EVAL_MODE_ONCE, |
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EVAL_MODE_FRAME, |
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EVAL_MODE_NB |
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}; |
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enum VolumeVarName { |
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VAR_N, |
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VAR_NB_CHANNELS, |
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VAR_NB_CONSUMED_SAMPLES, |
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VAR_NB_SAMPLES, |
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#if FF_API_FRAME_PKT |
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VAR_POS, |
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#endif |
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VAR_PTS, |
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VAR_SAMPLE_RATE, |
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VAR_STARTPTS, |
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VAR_STARTT, |
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VAR_T, |
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VAR_TB, |
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VAR_VOLUME, |
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VAR_VARS_NB |
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}; |
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enum ReplayGainType { |
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REPLAYGAIN_DROP, |
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REPLAYGAIN_IGNORE, |
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REPLAYGAIN_TRACK, |
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REPLAYGAIN_ALBUM, |
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}; |
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typedef struct VolumeContext { |
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const AVClass *class; |
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AVFloatDSPContext *fdsp; |
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int precision; |
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int eval_mode; |
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const char *volume_expr; |
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AVExpr *volume_pexpr; |
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double var_values[VAR_VARS_NB]; |
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int replaygain; |
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double replaygain_preamp; |
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int replaygain_noclip; |
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double volume; |
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int volume_i; |
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int channels; |
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int planes; |
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enum AVSampleFormat sample_fmt; |
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void (*scale_samples)(uint8_t *dst, const uint8_t *src, int nb_samples, |
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int volume); |
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int samples_align; |
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} VolumeContext; |
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void ff_volume_init_x86(VolumeContext *vol); |
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#endif /* AVFILTER_VOLUME_H */
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