Commit | Line | Data |
---|---|---|
2ba45a60 DM |
1 | /* |
2 | * This file is part of FFmpeg. | |
3 | * | |
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. | |
8 | * | |
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. | |
13 | * | |
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 | |
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/eval.h" | |
29 | #include "libavutil/float_dsp.h" | |
30 | #include "libavutil/opt.h" | |
31 | #include "libavutil/samplefmt.h" | |
32 | ||
33 | enum PrecisionType { | |
34 | PRECISION_FIXED = 0, | |
35 | PRECISION_FLOAT, | |
36 | PRECISION_DOUBLE, | |
37 | }; | |
38 | ||
39 | enum EvalMode { | |
40 | EVAL_MODE_ONCE, | |
41 | EVAL_MODE_FRAME, | |
42 | EVAL_MODE_NB | |
43 | }; | |
44 | ||
45 | enum VolumeVarName { | |
46 | VAR_N, | |
47 | VAR_NB_CHANNELS, | |
48 | VAR_NB_CONSUMED_SAMPLES, | |
49 | VAR_NB_SAMPLES, | |
50 | VAR_POS, | |
51 | VAR_PTS, | |
52 | VAR_SAMPLE_RATE, | |
53 | VAR_STARTPTS, | |
54 | VAR_STARTT, | |
55 | VAR_T, | |
56 | VAR_TB, | |
57 | VAR_VOLUME, | |
58 | VAR_VARS_NB | |
59 | }; | |
60 | ||
61 | enum ReplayGainType { | |
62 | REPLAYGAIN_DROP, | |
63 | REPLAYGAIN_IGNORE, | |
64 | REPLAYGAIN_TRACK, | |
65 | REPLAYGAIN_ALBUM, | |
66 | }; | |
67 | ||
68 | typedef struct VolumeContext { | |
69 | const AVClass *class; | |
f6fa7814 | 70 | AVFloatDSPContext *fdsp; |
2ba45a60 DM |
71 | enum PrecisionType precision; |
72 | enum EvalMode eval_mode; | |
73 | const char *volume_expr; | |
74 | AVExpr *volume_pexpr; | |
75 | double var_values[VAR_VARS_NB]; | |
76 | ||
77 | enum ReplayGainType replaygain; | |
78 | double replaygain_preamp; | |
79 | int replaygain_noclip; | |
80 | double volume; | |
81 | int volume_i; | |
82 | int channels; | |
83 | int planes; | |
84 | enum AVSampleFormat sample_fmt; | |
85 | ||
86 | void (*scale_samples)(uint8_t *dst, const uint8_t *src, int nb_samples, | |
87 | int volume); | |
88 | int samples_align; | |
89 | } VolumeContext; | |
90 | ||
91 | void ff_volume_init_x86(VolumeContext *vol); | |
92 | ||
93 | #endif /* AVFILTER_AF_VOLUME_H */ |