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/*
* Version of LiSa that supports reading in files (like a SndBuf)
* LiSa supports only one channel so mixing can be performed
*/
public class LiSaX extends LiSa {
/*
* Read in file, mixing its channels using a gain vector
* mix == null means to mix all of the channels with gain 1/channels
*/
fun void
read(string file, float mix[])
{
SndBuf buf;
file => buf.read;
/*
* buf.samples() returns number of frames
* (i.e. samples in one channel)
*/
buf.samples()::samp => duration;
for (0 => int frame; frame < buf.samples(); frame++) {
0 => float v;
for (0 => int c; c < buf.channels(); c++) {
float g;
if (mix == null)
1.0/buf.channels() => g;
else
mix[c] => g;
buf.valueAt(frame*buf.channels() + c)*g +=> v;
}
valueAt(v, frame::samp);
}
}
/*
* Read in file, mixing its channels equally
*/
fun void
read(string file)
{
read(file, null);
}
}
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