source: src/io/source_apple_audio.h @ 3d2e481

sampler
Last change on this file since 3d2e481 was a41b1ef, checked in by Paul Brossier <piem@piem.org>, 9 years ago

src/io/source_apple_audio.h: add _get_duration
  • Property mode set to 100644
File size: 4.2 KB
Line 
1/*
2  Copyright (C) 2012-2013 Paul Brossier <piem@aubio.org>
3
4  This file is part of aubio.
5
6  aubio is free software: you can redistribute it and/or modify
7  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation, either version 3 of the License, or
9  (at your option) any later version.
10
11  aubio 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
14  GNU General Public License for more details.
15
16  You should have received a copy of the GNU General Public License
17  along with aubio.  If not, see <http://www.gnu.org/licenses/>.
18
19*/
20
21#ifndef AUBIO_SOURCE_APPLE_AUDIO_H
22#define AUBIO_SOURCE_APPLE_AUDIO_H
23
24/** \file
25
26  Read from file using CoreAudio Extended Audio File Services
27  [ExtAudioFileRef](https://developer.apple.com/library/ios/#documentation/MusicAudio/Reference/ExtendedAudioFileServicesReference/Reference/reference.html)
28
29  Avoid including this file directly! Prefer using ::aubio_source_t instead to
30  make your code portable.
31
32  To write to file, use ::aubio_sink_t.
33
34  \example io/test-source_apple_audio.c
35
36*/
37
38#ifdef __cplusplus
39extern "C" {
40#endif
41
42/** apple audio media source object */
43typedef struct _aubio_source_apple_audio_t aubio_source_apple_audio_t;
44
45/**
46
47  create new ::aubio_source_apple_audio_t
48
49  \param uri the file path or uri to read from
50  \param samplerate sampling rate to view the fie at
51  \param hop_size the size of the blocks to read from
52
53  Creates a new source object. If `0` is passed as `samplerate`, the sample
54  rate of the original file is used.
55
56  The samplerate of newly created source can be obtained using
57  ::aubio_source_apple_audio_get_samplerate.
58
59*/
60aubio_source_apple_audio_t * new_aubio_source_apple_audio(const char_t * uri, uint_t samplerate, uint_t hop_size);
61
62/**
63
64  read monophonic vector of length hop_size from source object
65
66  \param s source object, created with ::new_aubio_source_apple_audio
67  \param read_to ::fvec_t of data to read to
68  \param read upon returns, equals to number of frames actually read
69
70  Upon returns, `read` contains the number of frames actually read from the
71  source. `hop_size` if enough frames could be read, less otherwise.
72
73*/
74void aubio_source_apple_audio_do(aubio_source_apple_audio_t * s, fvec_t * read_to, uint_t * read);
75
76/**
77
78  read polyphonic vector of length hop_size from source object
79
80  \param s source object, created with ::new_aubio_source_apple_audio
81  \param read_to ::fmat_t of data to read to
82  \param read upon returns, equals to number of frames actually read
83
84  Upon returns, `read` contains the number of frames actually read from the
85  source. `hop_size` if enough frames could be read, less otherwise.
86
87*/
88void aubio_source_apple_audio_do_multi(aubio_source_apple_audio_t * s, fmat_t * read_to, uint_t * read);
89
90/**
91
92  get samplerate of source object
93
94  \param s source object, created with ::new_aubio_source_apple_audio
95  \return samplerate, in Hz
96
97*/
98uint_t aubio_source_apple_audio_get_samplerate(const aubio_source_apple_audio_t * s);
99
100/**
101
102  get channels of source object
103
104  \param s source object, created with ::new_aubio_source_apple_audio
105  \return number of channels
106
107*/
108uint_t aubio_source_apple_audio_get_channels(const aubio_source_apple_audio_t * s);
109
110/**
111
112  get the duration of source object, in frames
113
114  \param s source object, created with ::new_aubio_source_apple_audio
115  \return number of frames in file
116
117*/
118uint_t aubio_source_apple_audio_get_duration(const aubio_source_apple_audio_t * s);
119
120/**
121
122  seek source object
123
124  \param s source object, created with ::new_aubio_source
125  \param pos position to seek to, in frames
126
127  \return 0 if sucessful, non-zero on failure
128
129*/
130uint_t aubio_source_apple_audio_seek (aubio_source_apple_audio_t * s, uint_t pos);
131
132/**
133
134  close source
135
136  \param s source object, created with ::new_aubio_source_apple_audio
137
138  \return 0 if sucessful, non-zero on failure
139
140*/
141uint_t aubio_source_apple_audio_close(aubio_source_apple_audio_t * s);
142
143/**
144
145  close source and cleanup memory
146
147  \param s source object, created with ::new_aubio_source_apple_audio
148
149*/
150void del_aubio_source_apple_audio(aubio_source_apple_audio_t * s);
151
152#ifdef __cplusplus
153}
154#endif
155
156#endif /* AUBIO_SOURCE_APPLE_AUDIO_H */
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