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audio.h
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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 
35 };
36 
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 */
float, planar
Definition: samplefmt.h:69
This structure describes decoded (raw) audio or video data.
Definition: frame.h:180
AVFrame * ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples)
default handler for get_audio_buffer() for audio inputs
Definition: audio.c:36
Main libavfilter public API header.
double, planar
Definition: samplefmt.h:70
AVFrame * ff_get_audio_buffer(AVFilterLink *link, int nb_samples)
Request an audio samples buffer with a specific set of permissions.
Definition: audio.c:65
AV_SAMPLE_FMT_U8
static enum AVSampleFormat ff_packed_sample_fmts_array[]
Definition: audio.h:28
signed 32 bits
Definition: samplefmt.h:62
static enum AVSampleFormat ff_planar_sample_fmts_array[]
Definition: audio.h:37
signed 32 bits, planar
Definition: samplefmt.h:68
unsigned 8 bits, planar
Definition: samplefmt.h:66
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
AVFrame * ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples)
get_audio_buffer() handler for filters which simply pass audio along
Definition: audio.c:31
signed 16 bits
Definition: samplefmt.h:61
signed 16 bits, planar
Definition: samplefmt.h:67
internal API functions