Libav
audio_data.h
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
3  *
4  * This file is part of Libav.
5  *
6  * Libav is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * Libav is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVRESAMPLE_AUDIO_DATA_H
22 #define AVRESAMPLE_AUDIO_DATA_H
23 
24 #include <stdint.h>
25 
26 #include "libavutil/audio_fifo.h"
27 #include "libavutil/log.h"
28 #include "libavutil/samplefmt.h"
29 #include "avresample.h"
30 #include "internal.h"
31 
35 struct AudioData {
36  const AVClass *class;
39  unsigned int buffer_size;
41  int nb_samples;
43  int channels;
45  int is_planar;
46  int planes;
48  int stride;
49  int read_only;
51  int ptr_align;
53  const char *name;
54 };
55 
56 int ff_audio_data_set_channels(AudioData *a, int channels);
57 
77 int ff_audio_data_init(AudioData *a, uint8_t **src, int plane_size, int channels,
78  int nb_samples, enum AVSampleFormat sample_fmt,
79  int read_only, const char *name);
80 
92 AudioData *ff_audio_data_alloc(int channels, int nb_samples,
94  const char *name);
95 
105 int ff_audio_data_realloc(AudioData *a, int nb_samples);
106 
114 void ff_audio_data_free(AudioData **a);
115 
125 
138 int ff_audio_data_combine(AudioData *dst, int dst_offset, AudioData *src,
139  int src_offset, int nb_samples);
140 
149 void ff_audio_data_drain(AudioData *a, int nb_samples);
150 
161 int ff_audio_data_add_to_fifo(AVAudioFifo *af, AudioData *a, int offset,
162  int nb_samples);
163 
173 int ff_audio_data_read_from_fifo(AVAudioFifo *af, AudioData *a, int nb_samples);
174 
175 #endif /* AVRESAMPLE_AUDIO_DATA_H */