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18 lines
633 B
Plaintext
18 lines
633 B
Plaintext
(CONGEN
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(NAME "congen")
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(ARGUMENTS ("sound_type" "sndin") ("double" "risetime") ("double" "falltime"))
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(START (MIN sndin))
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(STATE ("double" "value" "0")
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("double" "rise_factor" "exp(log(0.5) / (sndin->sr * risetime))")
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("double" "fall_factor" "exp(log(0.5) / (sndin->sr * falltime))"))
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(CONSTANT "fall_factor" "rise_factor")
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(ALWAYS-SCALE sndin)
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(TERMINATE (MIN sndin))
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(INNER-LOOP " sample_type current = sndin;
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if (current > value) {
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value = current - (current - value) * rise_factor;
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} else {
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value = current - (current - value) * fall_factor;
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}
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output = (sample_type) value;"))
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