suppa

1 files changed, 50 insertions, 46 deletions

diff --git a/src/synth_engine.c b/src/synth_engine.c
index 9dbf2c5..5118c7d 100644
--- a/src/synth_engine.c
+++ b/src/synth_engine.c
@@ -5,6 +5,7 @@
 #include "control.h"
 #include "sound.h"
 #include "wavetable.h"
+#include "osc.h"
 
 #include <string.h>
 
@@ -46,21 +47,6 @@ gen10(float f, unsigned long long phase, float x, unsigned int sample_rate)
 }
 
 float
-gen1110(float f, unsigned long long phase, float x, unsigned int sample_rate)
-{
-float amplitude = 0.5; // Set the initial amplitude to 0.5
-float period = 1.0 / f; // Calculate the period of the waveform
-float angular_frequency = 2.0 * M_PI * f; // Calculate the angular frequency
-
-// Calculate the phase angle
-float phase_angle = fmodf(angular_frequency * phase / sample_rate, 2.0 * M_PI);
-
-// Generate the sample value using the sine function
-float sample = amplitude * sinf(phase_angle);
-
-return sample;
-}
-float
 gen110(float f, unsigned long long phase, float x, unsigned int sample_rate)
 {
   float a = fmodf(phase, sample_rate/f);
@@ -105,13 +91,32 @@ gen3(float f, midi_note_t * midi_note, float x, unsigned int sample_rate)
 {
   //return sqr_sample(1, f, .5, midi_note->elapsed, sample_rate);
 
-  return wvt_next(wvt_saw, f, sample_rate, &midi_note->wvt_index);
+  //return wvt_next(wvt_sound, f, sample_rate, &midi_note->wvt_index);
+  float sample = osc_sound(midi_note->wvt_index);
+  midi_note->wvt_index = osc_sound_next(f, midi_note->wvt_index);
+  return sample;
   
   /* return sawX_sample(0.7, f, 5, midi_note->elapsed, sample_rate) */
   /*   + sin_sample(0.3, 4.0/17.0*f, midi_note->elapsed, sample_rate); */
-  /* return saw_sample(0.5, f * (1 + sqrt(5)) / 2, midi_note->elapsed, sample_rate) */
-  /*        + sin_sample(0.3, f * x, midi_note->elapsed, sample_rate) */
-  /*        + sqr_sample(0.2, f * x, 0.2 * x * x, midi_note->elapsed, sample_rate); */
+}
+
+float
+gen4(float f, midi_note_t * midi_note, float x, unsigned int sample_rate)
+{
+  return wvt_next(wvt_tri, f, sample_rate, &midi_note->wvt_index);
+}
+
+float
+gen5(float f, midi_note_t * midi_note, float x, unsigned int sample_rate)
+{
+  return 0.8 * wvt_next(wvt_saw, f, sample_rate, &midi_note->wvt_index) +
+         .2 * sin_sample(1, f/2, midi_note->elapsed, sample_rate);
+}
+
+float
+gen6(float f, midi_note_t * midi_note, float x, unsigned int sample_rate)
+{
+  return wvt_next(wvt_sqr, f, sample_rate, &midi_note->wvt_index);
 }
 
 float
@@ -128,18 +133,21 @@ notes_active(synth_t *synth)
     if (!synth->midi_note[i].active)
       continue;
 
-    if (!adsr_amplitude(&synth->adsr,
-                        (float)synth->midi_note[i].noteOn,
-                        (float)synth->midi_note[i].noteOff,
-                        (float)synth->midi_note[i].elapsed)
+    if (!fix_adsr(&synth->adsr,
+                  (float)synth->midi_note[i].noteOn,
+                  (float)synth->midi_note[i].noteOff,
+                  synth->midi_note[i].elapsed,
+                  synth->midi_note[i].noteOffSample)
         && synth->midi_note[i].noteOff != 0) {
       synth->midi_note[i].freq = 0;
       synth->midi_note[i].channel = -1;
       synth->midi_note[i].noteOn = -1;
       synth->midi_note[i].noteOff = -1;
       synth->midi_note[i].wvt_index = 0;
+      synth->midi_note[i].lfo_index = 0;
       synth->midi_note[i].velocity = -1;
       synth->midi_note[i].elapsed = -1;
+      synth->midi_note[i].noteOffSample = 0;
       synth->midi_note[i].active = 0;
     } else {
       flag++;
@@ -149,7 +157,7 @@ notes_active(synth_t *synth)
   return flag;
 }
 
-float cur_freq, next_freq;
+float lfo_index;
 
 float
 make_sample(void *synthData, unsigned int sample_rate, int frame)
@@ -174,34 +182,23 @@ make_sample(void *synthData, unsigned int sample_rate, int frame)
     if (!synth->midi_note[i].active)
       continue;
 
-    float adsr = adsr_amplitude(&synth->adsr,
+    float adsr = fix_adsr(&synth->adsr,
                                 synth->midi_note[i].noteOn,
                                 synth->midi_note[i].noteOff,
-                                synth->midi_note[i].elapsed);
+                          synth->midi_note[i].elapsed,
+                  synth->midi_note[i].noteOffSample);
 
     float targ_freq = synth->midi_note[i].freq * cc_iget(&synth->cc_pitch, frame, FRAMES_PER_BUFFER);
-    float targ_freq_with_repitch = synth->midi_note[i].freq * cc_iget(&synth->cc_pitch, frame, FRAMES_PER_BUFFER);
+    targ_freq = targ_freq + targ_freq *
+      cc_iget(&synth->cc_lfo_amp, frame, FRAMES_PER_BUFFER) *
+      // (1.05946309436/24.0) *
+      (wvt_next(wvt_tri, (wvt_next(wvt_sound, 2 * cc_iget(&synth->cc_lfo_freq, frame, FRAMES_PER_BUFFER), SAMPLE_RATE, &lfo_index) / 2.0 + 0.5) * cc_iget(&synth->cc_lfo_freq, frame, FRAMES_PER_BUFFER), SAMPLE_RATE, &synth->midi_note[i].lfo_index) / 2.0 + 0.5);
     
     float synth_sample = synth->gen[synth->geni](targ_freq,
                                                  &synth->midi_note[i],
                                                  synth->x,
                                                  sample_rate); 
 
-    /* if (targ_freq != targ_freq_with_repitch) { */
-    /*   unsigned long long tmp = synth->midi_note[i].elapsed; */
-    /*   float next_sample = synth->gen[synth->geni](targ_freq_with_repitch, */
-    /*                                               tmp, */
-    /*                                               synth->x, */
-    /*                                               sample_rate); */
-    /*   while (synth_sample - next_sample > 0.001 && next_sample - synth_sample > 0.001) { */
-    /*     next_sample = synth->gen[synth->geni](targ_freq_with_repitch, */
-    /*                                           ++tmp, */
-    /*                                           synth->x, */
-    /*                                           sample_rate); */
-    /*   } */
-    /*   synth_sample = next_sample; */
-    /* } */
-    
     sample += 0.2 * rms * adsr * synth_sample;
   }
 
@@ -265,8 +262,7 @@ get_frame(void *outputBuffer, synth_t *synth, int i)
     *out++ = 0.0f;
 
     add_to_viz(synth, 0.0f);
-
-    synth->lfo.elapsed = 0;
+    lfo_index = 0;
     return;
   }
 
@@ -275,6 +271,7 @@ get_frame(void *outputBuffer, synth_t *synth, int i)
     *out++ = 0.0f;
     *out++ = 0.0f;
     add_to_viz(synth, 0.0f);
+    lfo_index = 0;
     return;
   }
 
@@ -410,7 +407,9 @@ init_synth(synth_t * synth)
   synth->cci = 0;
   CC(synth->cc_cutoff, "cutoff", 10, 5000, 30, 5000);
   CC(synth->cc_resonance, "resonance", 1, 10, .02, 1);
-  CC(synth->cc_lfo_freq, "lfo_freq", .01, 10, .02, .1);
+  //CC(synth->cc_lfo_freq, "lfo_freq", .01, 10, .02, 1);
+  CC(synth->cc_lfo_freq, "lfo_freq", 1, 1000, 2, 1);
+  CC(synth->cc_lfo_amp, "lfo_amp", 0, 1, .01, 0);
   CC(synth->cc_pitch, "pitch", -3, 4, 0.01, 1);
 
   synth->modi = 0;
@@ -438,6 +437,8 @@ init_synth(synth_t * synth)
     synth->midi_note[i].velocity = -1;
     synth->midi_note[i].elapsed = -1;
     synth->midi_note[i].active = 0;
+    synth->midi_note[i].wvt_index = 0;
+    synth->midi_note[i].lfo_index = 0;
     synth->midi_note[i].adsr = &(synth->adsr);
   }
 
@@ -453,7 +454,10 @@ init_synth(synth_t * synth)
   synth->gen[1] = gen1;
   synth->gen[2] = gen2;
   synth->gen[3] = gen3;
-  synth->geni = 2;
+  synth->gen[4] = gen4;
+  synth->gen[5] = gen5;
+  synth->gen[6] = gen6;
+  synth->geni = 3;
 
   synth->active = 0;