fake poly

1 files changed, 25 insertions, 9 deletions

diff --git a/src/synth_engine.c b/src/synth_engine.c
index fc0a53d..6bd6bf6 100644
--- a/src/synth_engine.c
+++ b/src/synth_engine.c
@@ -127,10 +127,10 @@ gen1(float f, unsigned long long phase, float x, unsigned int sample_rate)
 float
 gen2(float f, unsigned long long phase, float x, unsigned int sample_rate)
 {
-  return sin_sample(0.5, f * sqrt(2) , phase, sample_rate)
-    + sin_sample(0.5, f, phase, sample_rate);
+  /* return sin_sample(0.5, f * sqrt(2) , phase, sample_rate) */
+  /*   + sin_sample(0.5, f, phase, sample_rate); */
 
-  /* sawX_sample(1, synth->freq, 5, phase, sample_rate); */
+  return sawX_sample(1, f, 5, phase, sample_rate);
 }
 
 float
@@ -151,10 +151,14 @@ make_sample(unsigned long long phase, void *synthData, unsigned int sample_rate,
 
   //LFO!
   //if (synth->adsr.elapsed > SAMPLE_RATE / 2) synth->adsr.elapsed = 0;
-    
-  int n = 1;
-  for (int i = 0; i < n; i++) {
-    sample += (1.0 / n) * synth->gen[synth->geni](synth->n.freq + synth->freq_offset, phase, synth->x, sample_rate);
+
+  if (synth->poly) {
+    int n = synth->notes_active;
+    for (int i = 0; i < n; i++) {
+      sample += (1.0 / n) * synth->gen[synth->geni](synth->freq[i] + synth->freq_offset, synth->freq_count[i], synth->x, sample_rate);
+    }
+  } else {
+      sample = synth->gen[synth->geni](synth->n.freq + synth->freq_offset, phase, synth->x, sample_rate);
   }
 
   if (!viz && synth->filter) {
@@ -202,7 +206,7 @@ sound_gen(const void *inputBuffer, void *outputBuffer,
       continue;
     }
     if (adsr_amplitude(synth, synth->adsr.elapsed) == 0 && synth->n.noteOff != 0) {
-      printf("SYNTH OPFF\n");
+      //printf("SYNTH OPFF\n");
       synth->active = 0;
       *out++ = 0.0f;
       *out++ = 0.0f;
@@ -213,7 +217,13 @@ sound_gen(const void *inputBuffer, void *outputBuffer,
     *out++ = s;
     synth->adsr.elapsed++;
     synth->n.elapsed++;
+    for (int j = 0; j < synth->notes_active; j++) {
+      synth->freq_count[j]++;
+    }
     if (!synth->multi) {
+      for (int j = 0; j < synth->notes_active; j++) {
+        if (synth->freq_count[j] >= (1.0 / synth->freq[i]) * SAMPLE_RATE) synth->freq_count[j] = 0;
+      }
       if (synth->n.elapsed >= (1.0 / synth->n.freq) * SAMPLE_RATE) synth->n.elapsed = 0;
     } else {
       
@@ -230,13 +240,18 @@ init_synth(synth_t * synth)
   synth->gain = 1;
   synth->x = 1;
 
+  synth->notes_active = 0;
+  for (int i = 0; i<100;i++) {
+    synth->freq[i] = 0;
+    synth->freq_count[i] = 0;
+  }
+  
   synth->n.freq    = 0; 
   synth->n.noteOn  = 0; 
   synth->n.noteOff = 1; 
   synth->n.key     = 0; 
   synth->n.elapsed = 0; 
 
-
   synth->adsr.a = 0.0;
   synth->adsr.peak = 1.0f;
   synth->adsr.d = 0.3;
@@ -246,6 +261,7 @@ init_synth(synth_t * synth)
 
   synth->octave = 3;
 
+  synth->poly = 0;
   synth->multi = 0;
   synth->filter = 0;
   synth->cutoff = 22000.0f;