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<pre class=""src src-sh"">incudine foo.cudo --pad 1.2 -o - -H ircam -F float <span style=""color: #ffa07a;"">\</span>
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-s quux.rego | sox - quux.wv</pre>
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<p>
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We can also decide to use an absolute duration for the output file:
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</p>
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<pre class=""src src-sh"">incudine foo.cudo -d 6.5 -s quux.rego</pre>
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<p>
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For realtime, please start Jack on Linux and set the rt priorities of
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Incudine. You can change them in <code>$HOME/.incudinerc</code> or use
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the options
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</p>
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<pre class=""example"">
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--rt-priority prio for rt thread (default: 68)
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--nrt-priority prio for nrt thread (default: 60)
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--receiver-priority prio for receiver thread (default: 63)</pre>
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<p>
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In my case, jackd is run with <code>`-R -P70'</code>.
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</p>
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<pre class=""src src-sh"">incudine foo.cudo -d 6.5 -R -s quux.rego</pre>
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<p>
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We can use multiple files and switch from realtime (-R) to non-rt (-N)
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and vice versa. In the following example, quux is in realtime and bar
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writes a soundfile to disk.
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</p>
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<pre class=""src src-sh"">cp quux.rego bar.rego
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incudine foo.cudo -d 6.5 -R -s quux.rego -N -s bar.rego</pre>
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<p>
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Incudine uses Erik de Castro Lopo's libsndfile to read/write a soundfile
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from/to disk.
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</p>
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<pre class=""src src-sh"">incudine --header-type-list
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incudine --data-format-list</pre>
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<p>
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Header type and format of the sample are respectively `wav' (`aiff' on
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big endian machines) and `pcm-24'.
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</p>
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<p>
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The following example produces a flac file <code>quux.flac</code>
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</p>
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<pre class=""src src-sh"">incudine foo.cudo --pad 1.2 -H flac -s quux.rego</pre>
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<p>
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and a ogg file <code>quux.ogg</code>
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</p>
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<pre class=""src src-sh"">incudine foo.cudo --pad 1.2 -H ogg -F vorbis -s quux.rego</pre>
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<p>
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There is the possibility to add metadata. It is important to notice the
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comment in <code>sndfile.h</code>, the c header of libsndfile:
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</p>
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<blockquote>
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<p>
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… Not all file types support this and even the file types which
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support one, may not support all string types.
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</p>
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</blockquote>
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<p>
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Example:
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</p>
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<pre class=""src src-sh"">incudine foo.cudo --pad 1.2 --title <span style=""color: #ffa07a;"">""Passame n'elettrodo""</span> <span style=""color: #ffa07a;"">\</span>
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--artist <span style=""color: #ffa07a;"">""Fabro Cadabro Band""</span> -s quux.rego
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sndfile-metadata-get --str-{title,artist} quux.wav</pre>
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<p>
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Often we want manipulate an input file. The next example shows how to
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use incudine for the convolution between two soundfiles. We put in
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conv.cudo the code to parse the user options and the definition of the
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DSP for the convolver.
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</p>
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<pre class=""src src-sh"">cat > conv.cudo <<'---'
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(defvar *pvbuf*
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(let ((buf (buffer-load (read-arg 1 nil))))
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(cond (buf (make-part-convolve-buffer buf 2048))
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(t (msg error ""Failed to open the IR"")
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(exit 1)))))
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(defvar *scale* (sample (or (read-arg 2) 1)))
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(dsp! convolve ()
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(with-samples ((scale *scale*))
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