introduce synthesizer parameter mappings

2025-04-26 15:45:16 +02:00
parent 432265a010
commit f4f61a2fd4
4 changed files with 290 additions and 23 deletions
--- a/synth/tx_parameter_mapping.h
+++ b/synth/tx_parameter_mapping.h
@@ -0,0 +1,89 @@
+#include <cmath>
+namespace trnr {
+    enum tx_parameter {
+        BIT_RESOLUTION = 0,
+        FEEDBACKOSC_PHASE_RESOLUTION,
+        FEEDBACK,
+        ALGORITHM,
+
+        PITCH_ENVELOPE_AMOUNT,
+        PITCH_ENVELOPE_SKIP_SUSTAIN,
+        PITCH_ENVELOPE_ATTACK1_RATE,
+        PITCH_ENVELOPE_ATTACK1_LEVEL,
+        PITCH_ENVELOPE_ATTACK2_RATE,
+        PITCH_ENVELOPE_HOLD_RATE,
+        PITCH_ENVELOPE_DECAY1_RATE,
+        PITCH_ENVELOPE_DECAY1_LEVEL,
+        PITCH_ENVELOPE_DECAY2_RATE,
+        PITCH_ENVELOPE_SUSTAIN_LEVEL,
+        PITCH_ENVELOPE_RELEASE1_RATE,
+        PITCH_ENVELOPE_RELEASE1_LEVEL,
+        PITCH_ENVELOPE_RELEASE2_RATE,
+
+        OP1_RATIO,
+        OP1_AMPLITUDE,
+        OP1_PHASE_RESOLUTION,
+        OP1_ENVELOPE_SKIP_SUSTAIN,
+        OP1_ENVELOPE_ATTACK1_RATE,
+        OP1_ENVELOPE_ATTACK1_LEVEL,
+        OP1_ENVELOPE_ATTACK2_RATE,
+        OP1_ENVELOPE_HOLD_RATE,
+        OP1_ENVELOPE_DECAY1_RATE,
+        OP1_ENVELOPE_DECAY1_LEVEL,
+        OP1_ENVELOPE_DECAY2_RATE,
+        OP1_ENVELOPE_SUSTAIN_LEVEL,
+        OP1_ENVELOPE_RELEASE1_RATE,
+        OP1_ENVELOPE_RELEASE1_LEVEL,
+        OP1_ENVELOPE_RELEASE2_RATE,
+
+        OP2_RATIO,
+        OP2_AMPLITUDE,
+        OP2_PHASE_RESOLUTION,
+        OP2_ENVELOPE_SKIP_SUSTAIN,
+        OP2_ENVELOPE_ATTACK1_RATE,
+        OP2_ENVELOPE_ATTACK1_LEVEL,
+        OP2_ENVELOPE_ATTACK2_RATE,
+        OP2_ENVELOPE_HOLD_RATE,
+        OP2_ENVELOPE_DECAY1_RATE,
+        OP2_ENVELOPE_DECAY1_LEVEL,
+        OP2_ENVELOPE_DECAY2_RATE,
+        OP2_ENVELOPE_SUSTAIN_LEVEL,
+        OP2_ENVELOPE_RELEASE1_RATE,
+        OP2_ENVELOPE_RELEASE1_LEVEL,
+        OP2_ENVELOPE_RELEASE2_RATE,
+
+        OP3_RATIO,
+        OP3_AMPLITUDE,
+        OP3_PHASE_RESOLUTION,
+        OP3_ENVELOPE_SKIP_SUSTAIN,
+        OP3_ENVELOPE_ATTACK1_RATE,
+        OP3_ENVELOPE_ATTACK1_LEVEL,
+        OP3_ENVELOPE_ATTACK2_RATE,
+        OP3_ENVELOPE_HOLD_RATE,
+        OP3_ENVELOPE_DECAY1_RATE,
+        OP3_ENVELOPE_DECAY1_LEVEL,
+        OP3_ENVELOPE_DECAY2_RATE,
+        OP3_ENVELOPE_SUSTAIN_LEVEL,
+        OP3_ENVELOPE_RELEASE1_RATE,
+        OP3_ENVELOPE_RELEASE1_LEVEL,
+        OP3_ENVELOPE_RELEASE2_RATE,
+    };
+
+    struct tx_parameter_mapping {
+        float range_min;
+        float range_max;
+        float exponent;
+        tx_parameter parameter;
+        
+        tx_parameter_mapping(float _range_min, float _range_max, float _exponent, tx_parameter _parameter)
+            : range_min(_range_min), range_max(_range_max), exponent(_exponent), parameter(_parameter)
+        {}
+
+        float apply(float _input) const
+        {
+            if (range_min == range_max && exponent == 1.f) return _input;
+
+            return powf(_input, exponent) * (range_max - range_min) + range_min;
+        }
+    };
+}