source: src/io/source_sndfile.h @ 417fee0

feature/crepe_org
Last change on this file since 417fee0 was c6e7ba1, checked in by Paul Brossier <piem@piem.org>, 9 years ago

src/io/source_sndfile.h: add _get_duration

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File size: 4.0 KB
RevLine 
[afbd7e7]1/*
[ac20c85]2  Copyright (C) 2012-2013 Paul Brossier <piem@aubio.org>
[afbd7e7]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
[6f42c16]21#ifndef AUBIO_SOURCE_SNDFILE_H
22#define AUBIO_SOURCE_SNDFILE_H
[afbd7e7]23
[4e3723d]24/** \file
25
[ac20c85]26  Read from file using [libsndfile](http://www.mega-nerd.com/libsndfile/)
27
28  Avoid including this file directly! Prefer using ::aubio_source_t instead to
29  make your code portable.
30
31  To write to file, use ::aubio_sink_t.
32
[4e3723d]33  \example io/test-source_sndfile.c
34
35*/
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
[ac20c85]41/** sndfile media source object */
[afbd7e7]42typedef struct _aubio_source_sndfile_t aubio_source_sndfile_t;
[ac20c85]43
44/**
45
46  create new ::aubio_source_sndfile_t
47
48  \param uri the file path or uri to read from
49  \param samplerate sampling rate to view the fie at
[6a03729]50  \param hop_size the size of the blocks to read from
[ac20c85]51
52  Creates a new source object. If `0` is passed as `samplerate`, the sample
53  rate of the original file is used.
54
55  The samplerate of newly created source can be obtained using
56  ::aubio_source_sndfile_get_samplerate.
57
58*/
[ae5d58a]59aubio_source_sndfile_t * new_aubio_source_sndfile(const char_t * uri, uint_t samplerate, uint_t hop_size);
[ac20c85]60
61/**
62
[6a03729]63  read monophonic vector of length hop_size from source object
[ac20c85]64
65  \param s source object, created with ::new_aubio_source_sndfile
66  \param read_to ::fvec_t of data to read to
67  \param read upon returns, equals to number of frames actually read
68
69  Upon returns, `read` contains the number of frames actually read from the
[6a03729]70  source. `hop_size` if enough frames could be read, less otherwise.
[ac20c85]71
72*/
[afbd7e7]73void aubio_source_sndfile_do(aubio_source_sndfile_t * s, fvec_t * read_to, uint_t * read);
[ac20c85]74
75/**
76
[ae9fd90]77  read polyphonic vector of length hop_size from source object
78
79  \param s source object, created with ::new_aubio_source_sndfile
80  \param read_to ::fmat_t of data to read to
81  \param read upon returns, equals to number of frames actually read
82
83  Upon returns, `read` contains the number of frames actually read from the
84  source. `hop_size` if enough frames could be read, less otherwise.
85
86*/
[3d2fe26]87void aubio_source_sndfile_do_multi(aubio_source_sndfile_t * s, fmat_t * read_to, uint_t * read);
[ae9fd90]88
89/**
90
[ac20c85]91  get samplerate of source object
92
93  \param s source object, created with ::new_aubio_source_sndfile
94  \return samplerate, in Hz
95
96*/
[063fa5a]97uint_t aubio_source_sndfile_get_samplerate(aubio_source_sndfile_t * s);
[ac20c85]98
99/**
100
[4865e4b]101  get number of channels of source object
102
103  \param s source object, created with ::new_aubio_source_sndfile
104  \return number of channels
105
106*/
107uint_t aubio_source_sndfile_get_channels (aubio_source_sndfile_t * s);
108
109/**
110
[7982203]111  seek source object
112
113  \param s source object, created with ::new_aubio_source_sndfile
114  \param pos position to seek to, in frames
115
116  \return 0 if sucessful, non-zero on failure
117
118*/
119uint_t aubio_source_sndfile_seek (aubio_source_sndfile_t *s, uint_t pos);
120
121/**
122
[c6e7ba1]123  get the duration of source object, in frames
124
125  \param s source object, created with ::new_aubio_source_sndfile
126  \return number of frames in file
127
128*/
129uint_t aubio_source_sndfile_get_duration (const aubio_source_sndfile_t *s);
130
131/**
132
[422452b]133  close source
134
135  \param s source object, created with ::new_aubio_source_sndfile
136
137  \return 0 if sucessful, non-zero on failure
138
139*/
140uint_t aubio_source_sndfile_close (aubio_source_sndfile_t *s);
141
142/**
143
[ac20c85]144  close source and cleanup memory
145
146  \param s source object, created with ::new_aubio_source_sndfile
147
148*/
[afbd7e7]149void del_aubio_source_sndfile(aubio_source_sndfile_t * s);
150
[4e3723d]151#ifdef __cplusplus
152}
153#endif
154
[6f42c16]155#endif /* AUBIO_SOURCE_SNDFILE_H */
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