add missing file

src/dsp/node_sampl.rs

@@ -0,0 +1,86 @@
+// 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;
+use crate::dsp::{SAtom, ProcBuf, DspNode, LedPhaseVals};
+
+/// A simple amplifier
+#[derive(Debug, Clone)]
+pub struct Sampl {
+}
+
+impl Sampl {
+    pub fn new() -> Self {
+        Self {
+        }
+    }
+    pub const freq : &'static str =
+        "Sampl freq\nPitch input for the sampler, giving the playback speed of the\
+        sample.\nRange: (-1..1)\n";
+    pub const sample : &'static str =
+        "Sampl sample\nThe audio sample that is played back.\nRange: (-1..1)\n";
+    pub const sig : &'static str =
+        "Sampl sig\nSampler audio output\nRange: (-1..1)\n";
+}
+
+impl DspNode for Sampl {
+    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, atoms: &[SAtom], _params: &[ProcBuf],
+        inputs: &[ProcBuf], outputs: &mut [ProcBuf], ctx_vals: LedPhaseVals)
+    {
+        use crate::dsp::{out}; //, inp, denorm, denorm_v, inp_dir, at};
+
+//        let gain = inp::Amp::gain(inputs);
+//        let att  = inp::Amp::att(inputs);
+//        let inp  = inp::Amp::inp(inputs);
+        let out  = out::Sampl::sig(outputs);
+
+        for frame in 0..ctx.nframes() {
+            out.write(frame, 0.0);
+        }
+
+        ctx_vals[0].set(1.0);
+//        let neg  = at::Amp::neg_att(atoms);
+//
+//        let last_frame   = ctx.nframes() - 1;
+//
+//        let last_val =
+//            if neg.i() > 0 {
+//                for frame in 0..ctx.nframes() {
+//                    out.write(frame,
+//                        inp.read(frame)
+//                        * denorm_v::Amp::att(
+//                            inp_dir::Amp::att(att, frame)
+//                            .max(0.0))
+//                        * denorm::Amp::gain(gain, frame));
+//                }
+//
+//                inp.read(last_frame)
+//                * denorm_v::Amp::att(
+//                    inp_dir::Amp::att(att, last_frame)
+//                    .max(0.0))
+//                * denorm::Amp::gain(gain, last_frame)
+//
+//            } else {
+//                for frame in 0..ctx.nframes() {
+//                    out.write(frame,
+//                        inp.read(frame)
+//                        * denorm_v::Amp::att(
+//                            inp_dir::Amp::att(att, frame).abs())
+//                        * denorm::Amp::gain(gain, frame));
+//                }
+//
+//                inp.read(last_frame)
+//                * denorm_v::Amp::att(
+//                    inp_dir::Amp::att(att, last_frame).abs())
+//                * denorm::Amp::gain(gain, last_frame)
+//            };
+    }
+}