blob: 6adc82dc810e8c5b86392fac8424b34d22dfb2a6
1 | /* |
2 | * Copyright (c) Stefano Sabatini | stefasab at gmail.com |
3 | * Copyright (c) S.N. Hemanth Meenakshisundaram | smeenaks at ucsd.edu |
4 | * |
5 | * This file is part of FFmpeg. |
6 | * |
7 | * FFmpeg is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU Lesser General Public |
9 | * License as published by the Free Software Foundation; either |
10 | * version 2.1 of the License, or (at your option) any later version. |
11 | * |
12 | * FFmpeg is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | * Lesser General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU Lesser General Public |
18 | * License along with FFmpeg; if not, write to the Free Software |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
20 | */ |
21 | |
22 | #ifndef AVFILTER_AUDIO_H |
23 | #define AVFILTER_AUDIO_H |
24 | |
25 | #include "avfilter.h" |
26 | #include "internal.h" |
27 | |
28 | static const enum AVSampleFormat ff_packed_sample_fmts_array[] = { |
29 | AV_SAMPLE_FMT_U8, |
30 | AV_SAMPLE_FMT_S16, |
31 | AV_SAMPLE_FMT_S32, |
32 | AV_SAMPLE_FMT_FLT, |
33 | AV_SAMPLE_FMT_DBL, |
34 | AV_SAMPLE_FMT_NONE |
35 | }; |
36 | |
37 | static const enum AVSampleFormat ff_planar_sample_fmts_array[] = { |
38 | AV_SAMPLE_FMT_U8P, |
39 | AV_SAMPLE_FMT_S16P, |
40 | AV_SAMPLE_FMT_S32P, |
41 | AV_SAMPLE_FMT_FLTP, |
42 | AV_SAMPLE_FMT_DBLP, |
43 | AV_SAMPLE_FMT_NONE |
44 | }; |
45 | |
46 | /** default handler for get_audio_buffer() for audio inputs */ |
47 | AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples); |
48 | |
49 | /** get_audio_buffer() handler for filters which simply pass audio along */ |
50 | AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples); |
51 | |
52 | /** |
53 | * Request an audio samples buffer with a specific set of permissions. |
54 | * |
55 | * @param link the output link to the filter from which the buffer will |
56 | * be requested |
57 | * @param nb_samples the number of samples per channel |
58 | * @return A reference to the samples. This must be unreferenced with |
59 | * avfilter_unref_buffer when you are finished with it. |
60 | */ |
61 | AVFrame *ff_get_audio_buffer(AVFilterLink *link, int nb_samples); |
62 | |
63 | #endif /* AVFILTER_AUDIO_H */ |
64 |