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aubio
0.4.8
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Media source to read blocks of consecutive audio samples from file. More...
Go to the source code of this file.
Typedefs | |
| typedef struct _aubio_source_t | aubio_source_t |
| media source object | |
Functions | |
| aubio_source_t * | new_aubio_source (const char_t *uri, uint_t samplerate, uint_t hop_size) |
| create new aubio_source_t More... | |
| void | aubio_source_do (aubio_source_t *s, fvec_t *read_to, uint_t *read) |
| read monophonic vector of length hop_size from source object More... | |
| void | aubio_source_do_multi (aubio_source_t *s, fmat_t *read_to, uint_t *read) |
| read polyphonic vector of length hop_size from source object More... | |
| uint_t | aubio_source_get_samplerate (aubio_source_t *s) |
| get samplerate of source object More... | |
| uint_t | aubio_source_get_channels (aubio_source_t *s) |
| get channels of source object More... | |
| uint_t | aubio_source_seek (aubio_source_t *s, uint_t pos) |
| seek source object More... | |
| uint_t | aubio_source_get_duration (aubio_source_t *s) |
| get the duration of source object, in frames More... | |
| uint_t | aubio_source_close (aubio_source_t *s) |
| close source object More... | |
| void | del_aubio_source (aubio_source_t *s) |
| close source and cleanup memory More... | |
Media source to read blocks of consecutive audio samples from file.
To write to file, use aubio_sink_t.
Depending on how aubio was compiled, the following sources will be available.
When creating a new source using new_aubio_source, the new function of each of the compiled-in sources will be used, in the following order, until one of them gets successfully created. If all sources returned NULL, new_aubio_source will return NULL.
source_avcodec : libav
aubio can be optionally compiled with libav, which can read from a very large number of audio and video formats, including over different network protocols such as HTTP.
source_apple_audio : ExtAudioFileRef
On Mac and iOS platforms, aubio should be compiled with CoreAudio Extended Audio File Services. This provides access to most common audio file formats, including compressed ones.
source_sndfile : libsndfile
Also optional, aubio can be built against libsndfile, which can read most uncompressed formats.
source_wavread : native WAV reader
A simple source to read from 16-bits PCM RIFF encoded WAV files.
Definition in file source.h.
| uint_t aubio_source_close | ( | aubio_source_t * | s | ) |
close source object
| s | source object, created with new_aubio_source |
| void aubio_source_do | ( | aubio_source_t * | s, |
| fvec_t * | read_to, | ||
| uint_t * | read | ||
| ) |
read monophonic vector of length hop_size from source object
| s | source object, created with new_aubio_source |
| read_to | fvec_t of data to read to |
| read | upon returns, equals to number of frames actually read |
Upon returns, read contains the number of frames actually read from the source. hop_size if enough frames could be read, less otherwise.
| void aubio_source_do_multi | ( | aubio_source_t * | s, |
| fmat_t * | read_to, | ||
| uint_t * | read | ||
| ) |
read polyphonic vector of length hop_size from source object
| s | source object, created with new_aubio_source | |
| read_to | fmat_t of data to read to | |
| [out] | read | upon returns, equals to number of frames actually read |
Upon returns, read contains the number of frames actually read from the source. hop_size if enough frames could be read, less otherwise.
| uint_t aubio_source_get_channels | ( | aubio_source_t * | s | ) |
get channels of source object
| s | source object, created with new_aubio_source |
| uint_t aubio_source_get_duration | ( | aubio_source_t * | s | ) |
get the duration of source object, in frames
| s | source object, created with new_aubio_source |
| uint_t aubio_source_get_samplerate | ( | aubio_source_t * | s | ) |
get samplerate of source object
| s | source object, created with new_aubio_source |
| uint_t aubio_source_seek | ( | aubio_source_t * | s, |
| uint_t | pos | ||
| ) |
seek source object
| s | source object, created with new_aubio_source |
| pos | position to seek to, in frames |
| void del_aubio_source | ( | aubio_source_t * | s | ) |
close source and cleanup memory
| s | source object, created with new_aubio_source |
| aubio_source_t* new_aubio_source | ( | const char_t * | uri, |
| uint_t | samplerate, | ||
| uint_t | hop_size | ||
| ) |
create new aubio_source_t
| uri | the file path or uri to read from |
| samplerate | sampling rate to view the fie at |
| hop_size | the size of the blocks to read from |
Creates a new source object. If 0 is passed as samplerate, the sample rate of the original file is used.
The samplerate of newly created source can be obtained using aubio_source_get_samplerate.
1.8.14