Support for samples

[mrombout]

Since DEMUSE is moving from MIDI to the MOD format, there should be syntax to load samples. For example the following syntax could be used:

sample = "sample" identifier text [sample_length] generator
generator = identifier | function

// will dynamically generate a sine wave
sample Sample01 "Sample 01" 32 function(x){
    return sin(x);
};

// will load a file as a sample
sample Sample02 "Sample 02" genFile("my_file.wav");

// will use a generator (same as Sample 01, generator is just a callback function)
sample Sample03 "Sample 03" genSine;

Specific details have to be researched. But essentially a sample definition could be a callback function that gets called for every part of the sample length (in the above example 32 times).

These should also be support for looping (not included in samples above).

[mrombout]

I think we need to re-consider the syntax of the language to contains more syntax specific for DEMUSE and music (like the examples provided in the original post). On the other hand, less specific syntax is favourable since we are using the flexibility of the language. For example, the above syntax could also be:

var Sample01 = Sample("Sample 01", 32, function(x) {
    return sin(x);
});

var Sample02 = Sample("Sample 02", genFile("my_file.wav");

var Sample03 = Sample("Sample 03", genSine);

But then, why not use JavaScript as the engine? (seriously, as a node.js extension, that might be cool)