filevalid
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## filevalid

filevalid — Checks that a file can be used.

## Description

Returns 1 if the sound file is valid, or 0 if not.

## Syntax

    ir filevalid ifilcod

## Initialization

ifilcod -- sound file to be queried

## Performance

filevalid returns 1 if the sound file ifilcod can be used.

## Examples

Here is an example of the filevalid opcode. It uses the file filevalid.csd, and mary.wav.

Example 204. Example of the filevalid opcode.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

    <CsoundSynthesizer>
    <CsOptions>
    ; Select audio/midi flags here according to platform
    ; Audio out   Audio in
    -odac           -iadc    ;;;RT audio I/O
    ; For Non-realtime ouput leave only the line below:
    ; -o filelen.wav -W ;;; for file output any platform
    </CsOptions>
    <CsInstruments>

    ; Initialize the global variables.
    sr = 44100
    kr = 4410
    ksmps = 10
    nchnls = 1

    ; Instrument #1.
    instr 1
      ; Check that the audio file "mary.wav" is avalable
      ivld  filevalid "mary.wav"
      print ivld
    endin

    </CsInstruments>
    <CsScore>

    ; Play Instrument #1 for 0.1 second.
    i 1 0 0.1
    e

    </CsScore>
    </CsoundSynthesizer>

## See Also

filebit, filelen, filenchnls, filepeak, filesr

## Credits

Author: Matt Ingalls
July 2010

Example written by John ffitch.

New in Csound version 4.13

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