added missing file and implemented gate output ports to the sequencer

src/dsp/mod.rs

@@ -309,7 +309,13 @@ macro_rules! node_list {
                [2 trk3]
                [3 trk4]
                [4 trk5]
-               [5 trk6],
+               [5 trk6]
+               [6  gat1]
+               [7  gat2]
+               [8  gat3]
+               [9  gat4]
+               [10 gat5]
+               [11 gat6],
             sampl => Sampl UIType::Generic UICategory::Osc
                (0 freq  n_pit      d_pit  r_id  f_def    -1.0, 1.0, 440.0)
                (1 trig  n_id       n_id   r_id  f_def    -1.0, 1.0, 0.0)
@@ -495,7 +501,7 @@ macro_rules! make_node_info_enum {
                 }
             }
 
-            pub fn format(&self, f: &mut std::io::Write, v: f32) -> Option<std::io::Result<()>> {
+            pub fn format(&self, f: &mut dyn std::io::Write, v: f32) -> Option<std::io::Result<()>> {
                 match self.node {
                     NodeId::$v1           => None,
                     $(NodeId::$variant(_) => {

src/dsp/node_fbwr_fbrd.rs

@@ -0,0 +1,97 @@
+// Copyright (c) 2021 Weird Constructor <weirdconstructor@gmail.com>
+// This is a part of HexoDSP. Released under (A)GPLv3 or any later.
+// See README.md and COPYING for details.
+
+use crate::nodes::{NodeAudioContext, NodeExecContext};
+use crate::dsp::{NodeId, SAtom, ProcBuf, DspNode, LedPhaseVals};
+
+/// A simple amplifier
+#[derive(Debug, Clone)]
+pub struct FbWr {
+    fb_index:   u8,
+}
+
+impl FbWr {
+    pub fn new(nid: &NodeId) -> Self {
+        Self {
+            fb_index: nid.instance() as u8,
+        }
+    }
+    pub const inp : &'static str =
+        "FbWr inp\nSignal input\nRange: (-1..1)\n";
+}
+
+impl DspNode for FbWr {
+    fn outputs() -> usize { 1 }
+
+    fn set_sample_rate(&mut self, _srate: f32) { }
+    fn reset(&mut self) { }
+
+    #[inline]
+    fn process<T: NodeAudioContext>(
+        &mut self, ctx: &mut T, ectx: &mut NodeExecContext,
+        atoms: &[SAtom], _params: &[ProcBuf], inputs: &[ProcBuf],
+        outputs: &mut [ProcBuf], ctx_vals: LedPhaseVals)
+    {
+        use crate::dsp::{inp};
+
+        let inp  = inp::FbWr::inp(inputs);
+
+        for frame in 0..ctx.nframes() {
+            ectx.feedback_delay_buffers[self.fb_index as usize]
+                .write(inp.read(frame));
+        }
+
+        ctx_vals[0].set(inp.read(ctx.nframes() - 1));
+    }
+}
+
+
+/// A simple amplifier
+#[derive(Debug, Clone)]
+pub struct FbRd {
+    fb_index:   u8,
+}
+
+impl FbRd {
+    pub fn new(nid: &NodeId) -> Self {
+        Self {
+            fb_index: nid.instance() as u8,
+        }
+    }
+    pub const atv : &'static str =
+        "FbRd atv\nAttenuate or invert input.\n\
+         Use this to adjust the feedback amount.\nRange: (0..1)\n";
+    pub const sig : &'static str =
+        "FbRd sig\nFeedback signal output.\nRange: (-1..1)\n";
+}
+
+impl DspNode for FbRd {
+    fn outputs() -> usize { 1 }
+
+    fn set_sample_rate(&mut self, _srate: f32) { }
+    fn reset(&mut self) { }
+
+    #[inline]
+    fn process<T: NodeAudioContext>(
+        &mut self, ctx: &mut T, ectx: &mut NodeExecContext,
+        atoms: &[SAtom], _params: &[ProcBuf], inputs: &[ProcBuf],
+        outputs: &mut [ProcBuf], ctx_vals: LedPhaseVals)
+    {
+        use crate::dsp::{out, inp, denorm};
+
+        let atv  = inp::FbRd::atv(inputs);
+        let sig  = out::FbRd::sig(outputs);
+
+        let mut last_val = 0.0;
+        for frame in 0..ctx.nframes() {
+            last_val =
+                ectx.feedback_delay_buffers[self.fb_index as usize]
+                    .read();
+            last_val *= denorm::FbRd::atv(atv, frame);
+            sig.write(frame, last_val);
+        }
+
+        ctx_vals[0].set(last_val);
+    }
+}

src/dsp/node_tseq.rs

@@ -67,6 +67,19 @@ impl TSeq {
         "TSeq trk5\nTrack 5 signal output\nRange: (-1..1)\n";
     pub const trk6 : &'static str =
         "TSeq trk6\nTrack 6 signal output\nRange: (-1..1)\n";
+
+    pub const gat1 : &'static str =
+        "TSeq gat1\nTrack 1 gate output\nRange: (-1..1)\n";
+    pub const gat2 : &'static str =
+        "TSeq gat2\nTrack 2 gate output\nRange: (-1..1)\n";
+    pub const gat3 : &'static str =
+        "TSeq gat3\nTrack 3 gate output\nRange: (-1..1)\n";
+    pub const gat4 : &'static str =
+        "TSeq gat4\nTrack 4 gate output\nRange: (-1..1)\n";
+    pub const gat5 : &'static str =
+        "TSeq gat5\nTrack 5 gate output\nRange: (-1..1)\n";
+    pub const gat6 : &'static str =
+        "TSeq gat6\nTrack 6 gate output\nRange: (-1..1)\n";
 }
 
 impl DspNode for TSeq {
@@ -136,41 +149,62 @@ impl DspNode for TSeq {
 
         let mut col_out : [f32; MAX_BLOCK_SIZE] =
             [0.0; MAX_BLOCK_SIZE];
-        let col_out_slice   = &mut col_out[0..ctx.nframes()];
+        let mut col_out_gate : [f32; MAX_BLOCK_SIZE] =
-        let phase_out_slice = &phase_out[0..ctx.nframes()];
+            [0.0; MAX_BLOCK_SIZE];
+        let col_out_slice       = &mut col_out[     0..ctx.nframes()];
+        let col_out_gate_slice  = &mut col_out_gate[0..ctx.nframes()];
+        let phase_out_slice     = &phase_out[       0..ctx.nframes()];
 
         let out_t1 = out::TSeq::trk1(outputs);
         backend.get_col_at_phase(
-            0, phase_out_slice, col_out_slice);
+            0, phase_out_slice, col_out_slice, col_out_gate_slice);
         out_t1.write_from(col_out_slice);
 
+        let out_g1 = out::TSeq::gat1(outputs);
+        out_g1.write_from(col_out_gate_slice);
+
         ctx_vals[0].set(col_out_slice[col_out_slice.len() - 1]);
 
         let out_t2 = out::TSeq::trk2(outputs);
         backend.get_col_at_phase(
-            1, phase_out_slice, col_out_slice);
+            1, phase_out_slice, col_out_slice, col_out_gate_slice);
         out_t2.write_from(col_out_slice);
 
+        let out_g2 = out::TSeq::gat2(outputs);
+        out_g2.write_from(col_out_gate_slice);
+
         let out_t3 = out::TSeq::trk3(outputs);
         backend.get_col_at_phase(
-            2, phase_out_slice, col_out_slice);
+            2, phase_out_slice, col_out_slice, col_out_gate_slice);
         out_t3.write_from(col_out_slice);
 
+        let out_g3 = out::TSeq::gat3(outputs);
+        out_g3.write_from(col_out_gate_slice);
+
         let out_t4 = out::TSeq::trk4(outputs);
         backend.get_col_at_phase(
-            3, phase_out_slice, col_out_slice);
+            3, phase_out_slice, col_out_slice, col_out_gate_slice);
         out_t4.write_from(col_out_slice);
 
+        let out_g4 = out::TSeq::gat4(outputs);
+        out_g4.write_from(col_out_gate_slice);
+
         let out_t5 = out::TSeq::trk5(outputs);
         backend.get_col_at_phase(
-            4, phase_out_slice, col_out_slice);
+            4, phase_out_slice, col_out_slice, col_out_gate_slice);
         out_t5.write_from(col_out_slice);
 
+        let out_g5 = out::TSeq::gat5(outputs);
+        out_g5.write_from(col_out_gate_slice);
+
         let out_t6 = out::TSeq::trk6(outputs);
         backend.get_col_at_phase(
-            5, phase_out_slice, col_out_slice);
+            5, phase_out_slice, col_out_slice, col_out_gate_slice);
         out_t6.write_from(col_out_slice);
 
+        let out_g6 = out::TSeq::gat6(outputs);
+        out_g6.write_from(col_out_gate_slice);
+
         ctx_vals[1].set(phase_out_slice[phase_out_slice.len() - 1]);
     }
 }

src/dsp/tracker/mod.rs

@@ -31,7 +31,7 @@ pub enum PatternUpdateMsg {
         col:         usize,
         col_type:    PatternColType,
         pattern_len: usize,
-        data:        [f32; MAX_PATTERN_LEN]
+        data:        [(f32, u8); MAX_PATTERN_LEN]
     },
 }
 
@@ -143,17 +143,21 @@ impl TrackerBackend {
 
     pub fn pattern_len(&self) -> usize { self.seq.rows() }
 
-    pub fn get_col_at_phase(&mut self, col: usize, phase: &[f32], out: &mut [f32]) {
+    pub fn get_col_at_phase(
+        &mut self, col: usize, phase: &[f32],
+        out: &mut [f32], out_gate: &mut [f32])
+    {
         if self.seq.rows() == 0 {
             return;
         }
 
         match self.col_types[col] {
-            PatternColType::Note | PatternColType::Step => {
+            PatternColType::Note | PatternColType::Step =>
-                self.seq.col_get_at_phase(col, phase, out)
+                self.seq.col_get_at_phase(        col, phase, out, out_gate),
-            },
+            PatternColType::Value =>
-            PatternColType::Value => self.seq.col_interpolate_at_phase(col, phase, out),
+                self.seq.col_interpolate_at_phase(col, phase, out, out_gate),
-            PatternColType::Gate  => self.seq.col_gate_at_phase(col, phase, out),
+            PatternColType::Gate =>
+                self.seq.col_gate_at_phase(       col, phase, out, out_gate),
         }
     }
 }
@@ -187,11 +191,17 @@ mod tests {
         while backend.check_updates() { }
 
         let mut out      = [0.0; 16];
+        let mut out_gate = [0.0; 16];
+
+        backend.get_col_at_phase(
+            0, &[0.2, 0.5, 0.99], &mut out[..], &mut out_gate[..]);
 
-        backend.get_col_at_phase(0, &[0.2, 0.5, 0.99], &mut out[..]);
         assert_float_eq!(out[0], 1.0);
         assert_float_eq!(out[1], 0.46666666);
         assert_float_eq!(out[2], 0.0);
+        assert_float_eq!(out_gate[0], 0.0);
+        assert_float_eq!(out_gate[1], 1.0);
+        assert_float_eq!(out_gate[2], 1.0);
     }
 
     #[test]
@@ -209,11 +219,16 @@ mod tests {
         while backend.check_updates() { }
 
         let mut out      = [0.0; 16];
+        let mut out_gate = [0.0; 16];
 
-        backend.get_col_at_phase(0, &[0.2, 0.5, 0.999999], &mut out[..]);
+        backend.get_col_at_phase(
+            0, &[0.2, 0.5, 0.999999], &mut out[..], &mut out_gate[..]);
         assert_float_eq!(out[0], 0.83238);
         assert_float_eq!(out[1], 0.46666666);
         assert_float_eq!(out[2], 0.0);
+        assert_float_eq!(out_gate[0], 0.0);
+        assert_float_eq!(out_gate[1], 0.0);
+        assert_float_eq!(out_gate[2], 1.0);
     }
 
     #[test]
@@ -232,6 +247,7 @@ mod tests {
         while backend.check_updates() { }
 
         let mut out      = [0.0; 64];
+        let mut out_gate = [0.0; 64];
 
         let mut phase = [0.0; 64];
         for (i, p) in phase.iter_mut().enumerate() {
@@ -239,16 +255,23 @@ mod tests {
         }
 
         //d// println!("----");
-        backend.get_col_at_phase(0, &phase[..], &mut out[..]);
+        backend.get_col_at_phase(
+            0, &phase[..], &mut out[..], &mut out_gate[..]);
         //d// println!("out: {:?}", &out[16..32]);
 
         assert_eq!(out[0..8],  [1.0; 8]);
         assert_eq!(out[8..16], [0.0; 8]);
         assert_eq!(out[16..32],[0.0; 16]);
+        assert_eq!(out_gate[0..8],  [1.0; 8]);
+        assert_eq!(out_gate[8..16], [1.0; 8]);
+        assert_eq!(out_gate[16..32],[0.0; 16]);
 
         assert_float_eq!(out[32], 1.0);
         assert_eq!(out[33..48],[0.0; 15]);
+        assert_float_eq!(out_gate[32], 1.0);
+        assert_eq!(out_gate[33..48],[1.0; 15]);
 
         assert_eq!(out[48..64],[1.0; 16]);
+        assert_eq!(out_gate[48..64],[1.0; 16]);
     }
 }

src/dsp/tracker/pattern.rs

@@ -11,7 +11,7 @@ use crate::matrix_repr::PatternRepr;
 pub struct PatternData {
     col_types:  [PatternColType; MAX_COLS],
     data:       Vec<Vec<Option<u16>>>,
-    out_data:   Vec<[f32; MAX_PATTERN_LEN]>,
+    out_data:   Vec<[(f32, u8); MAX_PATTERN_LEN]>,
     strings:    Vec<Vec<Option<String>>>,
     cursor:     (usize, usize),
     rows:       usize,
@@ -24,7 +24,7 @@ impl PatternData {
         Self {
             col_types:  [PatternColType::Value; MAX_COLS],
             data:       vec![vec![None; MAX_COLS]; MAX_PATTERN_LEN],
-            out_data:   vec![[0.0; MAX_PATTERN_LEN]; MAX_COLS],
+            out_data:   vec![[(0.0, 0); MAX_PATTERN_LEN]; MAX_COLS],
             strings:    vec![vec![None; MAX_COLS]; MAX_PATTERN_LEN],
             cursor:     (2, 2),
             edit_step:  4,
@@ -106,7 +106,7 @@ impl PatternData {
         self.cursor    = repr.cursor;
     }
 
-    pub fn get_out_data(&self) -> &[[f32; MAX_PATTERN_LEN]] {
+    pub fn get_out_data(&self) -> &[[(f32, u8); MAX_PATTERN_LEN]] {
         &self.out_data
     }
 
@@ -160,8 +160,8 @@ impl PatternData {
                         };
 
                     if let Some(end_value) = cur_value {
-                        out_col[start_idx] = start_value;
+                        out_col[start_idx] = (start_value, 0);
-                        out_col[end_idx]   = end_value;
+                        out_col[end_idx]   = (end_value, 1);
 
                         let delta_rows = end_idx - start_idx;
 
@@ -171,7 +171,7 @@ impl PatternData {
                                       (idx - start_idx) as f32
                                     / (delta_rows as f32);
                                 out_col[idx] =
-                                    start_value * (1.0 - x) + end_value * x;
+                                    (start_value * (1.0 - x) + end_value * x, 0);
                             }
                         }
 
@@ -189,23 +189,33 @@ impl PatternData {
                 }
             },
             PatternColType::Note => {
-                let mut cur_value = 0.0;
+                let mut cur_value = (0.0, 0);
 
                 for row in 0..self.rows {
                     if let Some(new_value) = self.data[row][col] {
-                        cur_value =
+                        cur_value = (
-                            ((new_value as i32 - 69) as f32 * 0.1) / 12.0;
+                            ((new_value as i32 - 69) as f32 * 0.1) / 12.0,
+                            1
+                        );
+                    } else {
+                        cur_value.1 = 0;
                     }
 
-                    out_col[row] = cur_value.clamp(-1.0, 1.0);
+                    out_col[row] =
+                        (cur_value.0.clamp(-1.0, 1.0), cur_value.1);
                 }
             },
             PatternColType::Step => {
-                let mut cur_value = 0.0;
+                let mut cur_value = (0.0, 0);
 
                 for row in 0..self.rows {
                     if let Some(new_value) = self.data[row][col] {
-                        cur_value = ((new_value & 0xFFF) as f32) / (0xFFF as f32);
+                        cur_value = (
+                            ((new_value & 0xFFF) as f32) / (0xFFF as f32),
+                            1
+                        );
+                    } else {
+                        cur_value.1 = 0;
                     }
 
                     out_col[row] = cur_value;
@@ -215,9 +225,9 @@ impl PatternData {
                 for row in 0..self.rows {
                     out_col[row] =
                         if let Some(new_value) = self.data[row][col] {
-                            f32::from_bits(new_value as u32)
+                            (f32::from_bits(new_value as u32), 1)
                         } else {
-                            f32::from_bits(0xF000 as u32)
+                            (f32::from_bits(0xF000 as u32), 0)
                         };
                 }
             },
@@ -394,8 +404,8 @@ mod tests {
             let inc = 1.0 / 2.0;
             for i in 1..2 {
                 let delta =
-                    out_data[col][i]
+                    out_data[col][i].0
-                    - out_data[col][i - 1];
+                    - out_data[col][i - 1].0;
                 assert_float_eq!(delta, inc);
             }
         }
@@ -416,8 +426,8 @@ mod tests {
             let inc = 1.0 / 3.0;
             for i in 1..3 {
                 let delta =
-                    out_data[col][i]
+                    out_data[col][i].0
-                    - out_data[col][i - 1];
+                    - out_data[col][i - 1].0;
                 assert_float_eq!(delta, inc);
             }
         }
@@ -440,8 +450,8 @@ mod tests {
             //d// println!("out: {:?}", &out_data[col][0..16]);
             for i in 1..16 {
                 let delta =
-                    out_data[col][i]
+                    out_data[col][i].0
-                    - out_data[col][i - 1];
+                    - out_data[col][i - 1].0;
                 assert_float_eq!(delta, inc);
             }
         }
@@ -462,8 +472,8 @@ mod tests {
 
             for i in 1..16 {
                 let delta =
-                    out_data[col][i]
+                    out_data[col][i].0
-                    - out_data[col][i - 1];
+                    - out_data[col][i - 1].0;
                 assert_float_eq!(delta.abs(), inc);
             }
         }
@@ -484,8 +494,8 @@ mod tests {
             //d// println!("out: {:?}", &out_data[col][0..16]);
             for i in 0..8 {
                 assert_float_eq!(
-                    out_data[col][i],
+                    out_data[col][i].0,
-                    out_data[col][15 - i]);
+                    out_data[col][15 - i].0);
             }
         }
     }
@@ -505,8 +515,8 @@ mod tests {
             //d// println!("out: {:?}", &out_data[col][0..16]);
             for i in 0..8 {
                 assert_float_eq!(
-                    out_data[col][i],
+                    out_data[col][i].0,
-                    out_data[col][15 - i]);
+                    out_data[col][15 - i].0);
             }
         }
     }
@@ -528,8 +538,8 @@ mod tests {
             //d// println!("out: {:?}", &out_data[col][0..16]);
             for i in 0..8 {
                 assert_float_eq!(
-                    out_data[col][i],
+                    out_data[col][i].0,
-                    out_data[col][15 - i]);
+                    out_data[col][15 - i].0);
             }
         }
     }
@@ -550,13 +560,13 @@ mod tests {
 
             //d// println!("out: {:?}", &out_data[col][0..16]);
 
-            assert_float_eq!(0.5, out_data[col][6]);
+            assert_float_eq!(0.5, out_data[col][6].0);
-            assert_float_eq!(0.5, out_data[col][9]);
+            assert_float_eq!(0.5, out_data[col][9].0);
 
             for i in 0..8 {
                 assert_float_eq!(
-                    out_data[col][i],
+                    out_data[col][i].0,
-                    out_data[col][15 - i]);
+                    out_data[col][15 - i].0);
             }
         }
     }
@@ -575,14 +585,14 @@ mod tests {
             pats.sync_out_data(col);
 
             let out_data = pats.get_out_data();
-            assert_float_eq!(out_data[col][0], 0.0);
+            assert_float_eq!(out_data[col][0].0,  0.0);
-            assert_float_eq!(out_data[col][4], 0.26959708);
+            assert_float_eq!(out_data[col][4].0,  0.26959708);
-            assert_float_eq!(out_data[col][5], 0.0);
+            assert_float_eq!(out_data[col][5].0,  0.0);
-            assert_float_eq!(out_data[col][7], 0.4998779);
+            assert_float_eq!(out_data[col][7].0,  0.4998779);
-            assert_float_eq!(out_data[col][8], 0.4998779);
+            assert_float_eq!(out_data[col][8].0,  0.4998779);
-            assert_float_eq!(out_data[col][9], 0.50012213);
+            assert_float_eq!(out_data[col][9].0,  0.50012213);
-            assert_float_eq!(out_data[col][10], 1.0);
+            assert_float_eq!(out_data[col][10].0, 1.0);
-            assert_float_eq!(out_data[col][15], 1.0);
+            assert_float_eq!(out_data[col][15].0, 1.0);
         }
     }
 
@@ -599,13 +609,13 @@ mod tests {
             pats.sync_out_data(col);
 
             let out_data = pats.get_out_data();
-            assert_float_eq!(out_data[col][0], 0.0);
+            assert_float_eq!(out_data[col][0].0,  0.0);
-            assert_float_eq!(out_data[col][4], 0.0);
+            assert_float_eq!(out_data[col][4].0,  0.0);
-            assert_float_eq!(out_data[col][5], -0.575);
+            assert_float_eq!(out_data[col][5].0, -0.575);
-            assert_float_eq!(out_data[col][7], -0.1);
+            assert_float_eq!(out_data[col][7].0, -0.1);
-            assert_float_eq!(out_data[col][9], -0.1);
+            assert_float_eq!(out_data[col][9].0, -0.1);
-            assert_float_eq!(out_data[col][10], 0.1);
+            assert_float_eq!(out_data[col][10].0, 0.1);
-            assert_float_eq!(out_data[col][15], 0.1);
+            assert_float_eq!(out_data[col][15].0, 0.1);
         }
     }
 

src/dsp/tracker/sequencer.rs

@@ -8,7 +8,7 @@ use crate::dsp::helpers::SplitMix64;
 
 pub struct PatternSequencer {
     rows:       usize,
-    data:       Vec<Vec<f32>>,
+    data:       Vec<Vec<(f32, u8)>>,
     rng:        SplitMix64,
     rand_vals:  [(usize, f64); MAX_COLS],
 }
@@ -36,7 +36,7 @@ impl PatternSequencer {
     pub fn new_default_seed(rows: usize) -> Self {
         Self {
             rows,
-            data:      vec![vec![0.0; MAX_PATTERN_LEN]; MAX_COLS],
+            data:      vec![vec![(0.0, 0); MAX_PATTERN_LEN]; MAX_COLS],
             rng:       SplitMix64::new(0x91234),
             rand_vals: [(99999, 0.0); MAX_COLS],
         }
@@ -53,7 +53,7 @@ impl PatternSequencer {
             };
         Self {
             rows,
-            data:      vec![vec![0.0; MAX_PATTERN_LEN]; MAX_COLS],
+            data:      vec![vec![(0.0, 0); MAX_PATTERN_LEN]; MAX_COLS],
             rng:       SplitMix64::new_from_i64(seed),
             rand_vals: [(99999, 0.0); MAX_COLS],
         }
@@ -65,7 +65,7 @@ impl PatternSequencer {
 
     pub fn rows(&self) -> usize { self.rows }
 
-    pub fn set_col(&mut self, col: usize, col_data: &[f32]) {
+    pub fn set_col(&mut self, col: usize, col_data: &[(f32, u8)]) {
         for (out_cell, in_cell) in
             self.data[col]
                 .iter_mut()
@@ -76,21 +76,26 @@ impl PatternSequencer {
     }
 
     pub fn col_interpolate_at_phase(
-        &self, col: usize, phase: &[f32], out: &mut [f32])
+        &self, col: usize, phase: &[f32], out: &mut [f32], out_gate: &mut [f32])
     {
         let col = &self.data[col][..];
 
         let last_row_idx : f32 = (self.rows as f32) - 0.000001;
         let rows = self.rows;
 
-        for (phase, out) in phase.iter().zip(out.iter_mut()) {
+        for ((phase, out), out_gate) in
+            phase.iter()
+                .zip(out.iter_mut())
+                .zip(out_gate.iter_mut())
+        {
             let row_phase  = phase * last_row_idx;
             let phase_frac = row_phase.fract();
             let line       = row_phase.floor() as usize % rows;
             let prev_line  = if line == 0 { self.rows - 1 } else { line - 1 };
 
-            let prev = col[prev_line];
+            let prev = col[prev_line].0;
-            let next = col[line];
+            let next = col[line].0;
+            let gate = col[line].1;
 
             // println!("INTERP: {}={:9.7}, {}={:9.7} | {:9.7}",
             //          prev_line, prev,
@@ -98,39 +103,51 @@ impl PatternSequencer {
             //          phase_frac);
 
             *out      = prev * (1.0 - phase_frac) + next * phase_frac;
+            *out_gate = gate as f32;
         }
     }
 
     pub fn col_get_at_phase(
-        &self, col: usize, phase: &[f32], out: &mut [f32])
+        &self, col: usize, phase: &[f32], out: &mut [f32], out_gate: &mut [f32])
     {
         let col = &self.data[col][..];
 
         let last_row_idx : f32 = (self.rows as f32) - 0.000001;
         let rows = self.rows;
 
-        for (phase, out) in phase.iter().zip(out.iter_mut()) {
+        for ((phase, out), out_gate) in
+            phase.iter()
+                .zip(out.iter_mut())
+                .zip(out_gate.iter_mut())
+        {
             let row_phase  = phase * last_row_idx;
             let line       = row_phase.floor() as usize % rows;
 
-            *out = col[line];
+            let (val, gate) = col[line];
+            *out      = val;
+            *out_gate = gate as f32;
         }
     }
 
     pub fn col_gate_at_phase(
-        &mut self, col_idx: usize, phase: &[f32], out: &mut [f32])
+        &mut self, col_idx: usize, phase: &[f32], out: &mut [f32], out_gate: &mut [f32])
     {
         let col = &self.data[col_idx][..];
 
         let last_row_idx : f32 = (self.rows as f32) - 0.000001;
         let rows = self.rows;
 
-        for (phase, out) in phase.iter().zip(out.iter_mut()) {
+        for ((phase, out), out_gate) in
+            phase.iter()
+                .zip(out.iter_mut())
+                .zip(out_gate.iter_mut())
+        {
             let row_phase  = phase.clamp(0.0, 1.0) * last_row_idx;
             let line       = row_phase.floor() as usize % rows;
             let phase_frac = row_phase.fract();
 
-            let gate : u32 = col[line].to_bits();
+            let gate : u32 = col[line].0.to_bits();
+            let ggate : u8 = col[line].1;
 
             // pulse_width:
             //      0xF  - Gate is on for full row
@@ -164,16 +181,21 @@ impl PatternSequencer {
 
                 if rand_val > (FRACT_16THS[probability as usize] as f64) {
                     *out = 0.0;
+                    if (gate & 0xF000) > 0 {
+                        *out_gate = 0.0;
+                    } else {
+                        *out_gate = ggate as f32;
+                    }
                     continue;
                 }
             }
 
-            println!("GATE: {:0X}", gate);
-
             if (gate & 0xF000) > 0 {
                 *out      = 0.0;
+                *out_gate = 0.0;
             } else {
                 *out      = if sub_frac <= pulse_width { 1.0 } else { 0.0 };
+                *out_gate = ggate as f32;
             }
         }
     }
@@ -196,74 +218,109 @@ mod tests {
     #[test]
     fn check_seq_interpolate_1() {
         let mut ps = PatternSequencer::new(2);
-        ps.set_col(0, &[0.0, 1.0]);
+        ps.set_col(0, &[(0.0, 0), (1.0, 1)]);
 
         let mut out      = [0.0; 6];
-        ps.col_interpolate_at_phase(0, &[0.0, 0.1, 0.50, 0.51, 0.9, 0.99999], &mut out[..]);
+        let mut out_gate = [0.0; 6];
+        ps.col_interpolate_at_phase(
+            0, &[0.0, 0.1, 0.50, 0.51, 0.9, 0.99999],
+            &mut out[..], &mut out_gate[..]);
         assert_float_eq!(out[0], 1.0);
         assert_float_eq!(out[1], 0.8);
         assert_float_eq!(out[2], 0.0);
         assert_float_eq!(out[3], 0.02);
         assert_float_eq!(out[4], 0.8);
         assert_float_eq!(out[5], 0.99999);
+
+        assert_float_eq!(out_gate[0], 0.0);
+        assert_float_eq!(out_gate[1], 0.0);
+        assert_float_eq!(out_gate[2], 0.0);
+        assert_float_eq!(out_gate[3], 1.0);
+        assert_float_eq!(out_gate[4], 1.0);
+        assert_float_eq!(out_gate[5], 1.0);
     }
 
     #[test]
     fn check_seq_interpolate_buffer_end() {
         let mut ps = PatternSequencer::new(256);
-        ps.set_col(0, &[f32::from_bits(0xF000); 256]);
+        ps.set_col(0, &[(f32::from_bits(0xF000), 0); 256]);
 
         let mut out      = [0.0; 1];
-        ps.col_gate_at_phase(0, &[0.9999999999], &mut out[..]);
+        let mut out_gate = [0.0; 1];
+        ps.col_gate_at_phase(
+            0, &[0.9999999999], &mut out[..], &mut out_gate[..]);
         assert_float_eq!(out[0],      0.0);
+        assert_float_eq!(out_gate[0], 0.0);
 
         let mut ps = PatternSequencer::new(256);
-        ps.set_col(0, &[0.0; 256]);
+        ps.set_col(0, &[(0.0, 0); 256]);
 
-        ps.col_get_at_phase(0, &[0.9999999999], &mut out[..]);
+        ps.col_get_at_phase(
+            0, &[0.9999999999], &mut out[..], &mut out_gate[..]);
         assert_float_eq!(out[0],        0.0);
+        assert_float_eq!(out_gate[0],   0.0);
 
-        ps.col_interpolate_at_phase(0, &[0.9999999999], &mut out[..]);
+        ps.col_interpolate_at_phase(
+            0, &[0.9999999999], &mut out[..], &mut out_gate[..]);
         assert_float_eq!(out[0],        0.0);
+        assert_float_eq!(out_gate[0],   0.0);
     }
 
     #[test]
     fn check_seq_step_1() {
         let mut ps = PatternSequencer::new(2);
-        ps.set_col(0, &[0.0, 1.0]);
+        ps.set_col(0, &[(0.0, 0), (1.0, 1)]);
 
         let mut out      = [0.0; 3];
-        ps.col_get_at_phase(0, &[0.1, 0.51, 0.9], &mut out[..]);
+        let mut out_gate = [0.0; 3];
+        ps.col_get_at_phase(
+            0, &[0.1, 0.51, 0.9], &mut out[..], &mut out_gate[..]);
         assert_float_eq!(out[0], 0.0);
         assert_float_eq!(out[1], 1.0);
         assert_float_eq!(out[2], 1.0);
+        assert_float_eq!(out_gate[0], 0.0);
+        assert_float_eq!(out_gate[1], 1.0);
+        assert_float_eq!(out_gate[2], 1.0);
     }
 
     #[test]
     fn check_seq_step_2() {
         let mut ps = PatternSequencer::new(3);
-        ps.set_col(0, &[0.0, 0.3, 1.0]);
+        ps.set_col(0, &[(0.0, 0), (0.3, 1), (1.0, 1)]);
 
         let mut out      = [0.0; 6];
-        ps.col_get_at_phase(0, &[0.1, 0.5, 0.51, 0.6, 0.9, 0.99], &mut out[..]);
+        let mut out_gate = [0.0; 6];
+        ps.col_get_at_phase(
+            0, &[0.1, 0.5, 0.51, 0.6, 0.9, 0.99],
+            &mut out[..], &mut out_gate[..]);
         assert_float_eq!(out[0], 0.0);
         assert_float_eq!(out[1], 0.3);
         assert_float_eq!(out[2], 0.3);
         assert_float_eq!(out[3], 0.3);
         assert_float_eq!(out[4], 1.0);
         assert_float_eq!(out[5], 1.0);
+
+        assert_float_eq!(out_gate[0], 0.0);
+        assert_float_eq!(out_gate[1], 1.0);
+        assert_float_eq!(out_gate[2], 1.0);
+        assert_float_eq!(out_gate[3], 1.0);
+        assert_float_eq!(out_gate[4], 1.0);
+        assert_float_eq!(out_gate[5], 1.0);
     }
 
     #[test]
     fn check_seq_gate_1() {
         let mut ps = PatternSequencer::new(2);
         ps.set_col(0, &[
-            f32::from_bits(0x0FFF),
+            (f32::from_bits(0x0FFF), 1),
-            f32::from_bits(0xF000),
+            (f32::from_bits(0xF000), 0),
         ]);
 
         let mut out      = [0.0; 6];
-        ps.col_gate_at_phase(0, &[0.1, 0.5, 0.5001, 0.6, 0.9, 0.99], &mut out[..]);
+        let mut out_gate = [0.0; 6];
+        ps.col_gate_at_phase(
+            0, &[0.1, 0.5, 0.5001, 0.6, 0.9, 0.99],
+            &mut out[..], &mut out_gate[..]);
         //d// println!("out: {:?}", out);
 
         assert_float_eq!(out[0], 1.0);
@@ -272,6 +329,13 @@ mod tests {
         assert_float_eq!(out[3], 0.0);
         assert_float_eq!(out[4], 0.0);
         assert_float_eq!(out[5], 0.0);
+
+        assert_float_eq!(out_gate[0], 1.0);
+        assert_float_eq!(out_gate[1], 1.0);
+        assert_float_eq!(out_gate[2], 0.0);
+        assert_float_eq!(out_gate[3], 0.0);
+        assert_float_eq!(out_gate[4], 0.0);
+        assert_float_eq!(out_gate[5], 0.0);
     }
 
     fn count_high(slice: &[f32]) -> usize {
@@ -298,9 +362,9 @@ mod tests {
     fn check_seq_gate_2() {
         let mut ps = PatternSequencer::new(3);
         ps.set_col(0, &[
-            f32::from_bits(0x0FF0),
+            (f32::from_bits(0x0FF0), 1),
-            f32::from_bits(0x0FF7),
+            (f32::from_bits(0x0FF7), 0),
-            f32::from_bits(0x0FFF),
+            (f32::from_bits(0x0FFF), 1),
         ]);
 
         let mut phase = vec![0.0; 96];
@@ -314,25 +378,33 @@ mod tests {
         //d// println!("PHASE: {:?}", phase);
 
         let mut out      = [0.0; 96];
-        ps.col_gate_at_phase(0, &phase[..], &mut out[..]);
+        let mut out_gate = [0.0; 96];
+        ps.col_gate_at_phase(
+            0, &phase[..], &mut out[..], &mut out_gate[..]);
         //d// println!("out: {:?}", &out[0..32]);
 
         assert_eq!(count_high(&out[0..32]),   2);
         assert_eq!(count_high(&out[32..64]), 16);
         assert_eq!(count_high(&out[64..96]), 32);
+        assert_eq!(count_high(&out_gate[0..32]),  32);
+        assert_eq!(count_high(&out_gate[32..64]),  0);
+        assert_eq!(count_high(&out_gate[64..96]), 32);
 
         assert_eq!(count_up(&out[0..32]),   1);
         assert_eq!(count_up(&out[32..64]),  1);
         assert_eq!(count_up(&out[64..96]),  1);
+        assert_eq!(count_up(&out_gate[0..32]),   1);
+        assert_eq!(count_up(&out_gate[32..64]),  0);
+        assert_eq!(count_up(&out_gate[64..96]),  1);
     }
 
     #[test]
     fn check_seq_gate_div_1() {
         let mut ps = PatternSequencer::new(3);
         ps.set_col(0, &[
-            f32::from_bits(0x0F80),
+            (f32::from_bits(0x0F80), 1),
-            f32::from_bits(0x0F87),
+            (f32::from_bits(0x0F87), 0),
-            f32::from_bits(0x0F8F),
+            (f32::from_bits(0x0F8F), 1),
         ]);
 
         let mut phase = vec![0.0; 3 * 64];
@@ -346,25 +418,33 @@ mod tests {
         //d// println!("PHASE: {:?}", phase);
 
         let mut out      = [0.0; 3 * 64];
-        ps.col_gate_at_phase(0, &phase[..], &mut out[..]);
+        let mut out_gate = [0.0; 3 * 64];
+        ps.col_gate_at_phase(
+            0, &phase[..], &mut out[..], &mut out_gate[..]);
 
         assert_eq!(count_high(&out[0..64]),  8);
         assert_eq!(count_up(  &out[0..64]),  8);
+        assert_eq!(count_high(&out_gate[0..64]),  64);
+        assert_eq!(count_up(  &out_gate[0..64]),  1);
 
         assert_eq!(count_high(&out[64..128]), 32);
         assert_eq!(count_up(  &out[64..128]),  8);
+        assert_eq!(count_high(&out_gate[64..128]),  0);
+        assert_eq!(count_up(  &out_gate[64..128]),  0);
 
         assert_eq!(count_high(&out[128..192]), 64);
         assert_eq!(count_up(  &out[128..192]),  1);
+        assert_eq!(count_high(&out_gate[128..192]), 64);
+        assert_eq!(count_up(  &out_gate[128..192]),  1);
     }
 
     #[test]
     fn check_seq_gate_div_2() {
         let mut ps = PatternSequencer::new(3);
         ps.set_col(0, &[
-            f32::from_bits(0x0F00),
+            (f32::from_bits(0x0F00), 1),
-            f32::from_bits(0x0F07),
+            (f32::from_bits(0x0F07), 0),
-            f32::from_bits(0x0F0F),
+            (f32::from_bits(0x0F0F), 1),
         ]);
 
         let mut phase = vec![0.0; 6 * 64];
@@ -378,25 +458,32 @@ mod tests {
         //d// println!("PHASE: {:?}", phase);
 
         let mut out      = [0.0; 6 * 64];
-        ps.col_gate_at_phase(0, &phase[..], &mut out[..]);
+        let mut out_gate = [0.0; 6 * 64];
+        ps.col_gate_at_phase(0, &phase[..], &mut out[..], &mut out_gate[..]);
 
         assert_eq!(count_high(&out[0..128]), 16);
         assert_eq!(count_up(  &out[0..128]), 16);
+        assert_eq!(count_high(&out_gate[0..128]), 128);
+        assert_eq!(count_up(  &out_gate[0..128]),   1);
 
         assert_eq!(count_high(&out[128..256]), 64);
         assert_eq!(count_up(  &out[128..256]), 16);
+        assert_eq!(count_high(&out_gate[128..256]), 0);
+        assert_eq!(count_up(  &out_gate[128..256]), 0);
 
         assert_eq!(count_high(&out[256..384]), 128);
         assert_eq!(count_up(  &out[256..384]),   1);
+        assert_eq!(count_high(&out_gate[256..384]), 128);
+        assert_eq!(count_up(  &out_gate[256..384]),   1);
     }
 
     #[test]
     fn check_seq_gate_div_3() {
         let mut ps = PatternSequencer::new(3);
         ps.set_col(0, &[
-            f32::from_bits(0x0FE0),
+            (f32::from_bits(0x0FE0), 1),
-            f32::from_bits(0x0FE7),
+            (f32::from_bits(0x0FE7), 0),
-            f32::from_bits(0x0FEF),
+            (f32::from_bits(0x0FEF), 1),
         ]);
 
         let mut phase = vec![0.0; 6 * 64];
@@ -410,25 +497,32 @@ mod tests {
         //d// println!("PHASE: {:?}", phase);
 
         let mut out      = [0.0; 6 * 64];
-        ps.col_gate_at_phase(0, &phase[..], &mut out[..]);
+        let mut out_gate = [0.0; 6 * 64];
+        ps.col_gate_at_phase(0, &phase[..], &mut out[..], &mut out_gate[..]);
 
         assert_eq!(count_high(&out[0..128]),  8);
         assert_eq!(count_up(  &out[0..128]),  2);
+        assert_eq!(count_high(&out_gate[0..128]),  128);
+        assert_eq!(count_up(  &out_gate[0..128]),    1);
 
         assert_eq!(count_high(&out[128..256]), 64);
         assert_eq!(count_up(  &out[128..256]),  2);
+        assert_eq!(count_high(&out_gate[128..256]), 0);
+        assert_eq!(count_up(  &out_gate[128..256]), 0);
 
         assert_eq!(count_high(&out[256..384]), 128);
         assert_eq!(count_up(  &out[256..384]),   1);
+        assert_eq!(count_high(&out_gate[256..384]), 128);
+        assert_eq!(count_up(  &out_gate[256..384]),   1);
     }
 
     fn run_probability_test_for(prob: u32) -> (usize, usize) {
         let rows = 100;
 
         let mut ps = PatternSequencer::new_default_seed(rows);
-        let mut coldata = vec![0.0; rows];
+        let mut coldata = vec![(0.0, 0); rows];
         for i in 0..coldata.len() {
-            coldata[i] = f32::from_bits(0x00FF | prob);
+            coldata[i] = (f32::from_bits(0x00FF | prob), 1);
         }
         ps.set_col(0, &coldata[..]);
 
@@ -442,7 +536,8 @@ mod tests {
         }
 
         let mut out      = vec![0.0; samples];
-        ps.col_gate_at_phase(0, &phase[..], &mut out[..]);
+        let mut out_gate = vec![0.0; samples];
+        ps.col_gate_at_phase(0, &phase[..], &mut out[..], &mut out_gate[..]);
 
         (count_high(&out[..]), count_up(&out[..]))
     }