Description

Plugin opcode in hdf5ops. This opcode is part of the plugin repository and has to be installed separately. The plugin repository can be found here: https://github.com/csound/plugins

hdf5read reads N signals and arrays from a specified hdf5 file.

Syntax

xout1[, xout2, xout3, ..., xoutN] hdf5read ifilename, ivariablename1[, ivariablename2, ivariablename3, ..., ivariablenameN]

Initialization

ifilename -- the hdf5 file's name (in double-quotes).

ivariablename1[, ivariablename2, ivariablename3, ..., ivariablenameN] -- the names of the datasets (in double-quotes) to be read from the hdf5 file, if the dataset name is suffixed with an asterisk, e.g. "mydataset*", the entire dataset is copied to the array regardless of array type.

Performance

xout1,... xoutN -- The specified types of variables that the hdf5 datasets are to be read as. Datasets with a rank larger than 1 must be read as arrays, i-rate signals must also be read as i-rate signals. Other than these restrictions datasets may be read as any type of array or signal. When reading has reached the end of a dataset it no longer outputs any new values.

Examples

Here is a simple example of the hdf5read opcode. It uses the file hdf5read.csd.

<CsoundSynthesizer>
<CsOptions>
-odac
</CsOptions>
<CsInstruments>
nchnls = 2
0dbfs = 1
ksmps = 8
sr = 44100

instr hdf5read

    aArray[], aVar, kVar hdf5read "example.h5", "aArray", "aVar", "kVar" ; Open hdf5 file and read variables

    aLeft = (aArray[0][0] + aArray[0][1] + aVar) / 3 ; Add audio signals together for stereo out
    aRight = (aArray[1][0] + aArray[1][1] + aVar) / 3

    outs aLeft * kVar, aRight * kVar ; Multiply audio signals by k-rate signal
endin

</CsInstruments>
<CsScore>

i "hdf5read" 0 1

</CsScore>
</CsoundSynthesizer>

See also

Signal Input

Credits