common/build/SCClassLibrary/Common/Audio/Mix.sc

   1
   2 Mix {
   3         *new { arg array;
   4                 var sum;
   5                 array.asArray.do({ arg val, i;
   6                         if (sum.isNil, { sum = val },{ sum = sum + val });
   7                 });
   8                 ^sum
   9         }
  10         // support this common idiom
  11         *fill { arg n, function;
  12                 var val, sum;
  13                 n.do({ arg i;
  14                         val = function.value(i);
  15                         if (sum.isNil, { sum = val },{ sum = sum + val });
  16                 });
  17                 ^sum;
  18         }
  19 }
  20
  21
  22 NumChannels {
  23
  24         *ar { arg input, numChannels = 2, mixdown = true;
  25
  26                 if(input.size > 1) { // collection
  27                    ^input
  28                         .clump(input.size / numChannels)
  29                         .collect { arg chan, i;
  30                                 if(chan.size == 1) {
  31                                         chan.at(0)
  32                                 } {
  33                                         if(mixdown) {
  34                                                 Mix.ar(chan)
  35                                         } {
  36                                                 chan.at(0)
  37                                         }
  38                                 }
  39                         }
  40                 } {
  41                         // single ugen or single item collection
  42                         if(input.isSequenceableCollection) {
  43                                 input = input.at(0);
  44                         };
  45
  46                         if(numChannels == 1) {
  47                                 ^input
  48                         } {
  49                                 ^Array.fill(numChannels, input)
  50                         }
  51                 }
  52         }
  53 }