Bump v0.6.1

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "lasprs"
-version = "0.6.0"
+version = "0.6.1"
 edition = "2021"
 authors = ["J.A. de Jong <j.a.dejong@ascee.nl>"]
 description = "Library for Acoustic Signal Processing (Rust edition, with optional Python bindings via pyo3)"
@@ -12,7 +12,7 @@ categories = ["multimedia::audio", "science", "mathematics"]
 
 [lib]
 name = "lasprs"
-crate-type = ["cdylib", "rlib",]
+crate-type = ["cdylib", "rlib"]
 
 [dependencies]
 # Error handling
@@ -29,8 +29,12 @@ num = "0.4.3"
 rayon = "1.10.0"
 
 # Python bindings
-pyo3 = { version = "0.22.2", optional = true, features = ["extension-module", "anyhow"]}
+pyo3 = { version = "0.21.2", optional = true, features = [
-numpy = { git = "https://github.com/JRRudy1/rust-numpy", branch = "pyo3-0.22.0" , optional = true}
+    "extension-module",
+    "anyhow",
+] }
+# Python bindings for Numpy arrays
+numpy = { version = "0.21.0", optional = true }
 
 # White noise etc
 rand = "0.8.5"
@@ -79,7 +83,12 @@ chrono = {version = "0.4.38", optional = true}
 uuid = { version = "1.10.0", features = ["v4"], optional = true }
 
 # Command line argument parser, for CLI apps
-clap = { version = "4.5.13", features = ["derive", "color", "help", "suggestions"] }
+clap = { version = "4.5.13", features = [
+    "derive",
+    "color",
+    "help",
+    "suggestions",
+] }
 
 # FFT's
 realfft = "3.3.0"
@@ -104,7 +113,20 @@ default = ["f64", "cpal-api", "record"]
 # Use this to test if everything works well in f32
 # default = ["f32", "cpal-api", "record"]
 
-# Use this for debugging extensions
+# When building Python bindings of Lasprs, you should enable the feature flag
+# "python-bindings". When debugging these, to safe the flag specification you
+# could just uncomment the line below here and comment the one above. If only
+# testing the implementations, or building the extension module, you should
+# call:
+
+# $ maturin develop -F python-bindings
+
+# Or: 
+
+# $ maturin develop --release -F python-bindings
+
+# For faster code
+
 #default = ["f64", "python-bindings", "record", "cpal-api"]
 
 pulse-api = []

README.md

@@ -12,11 +12,12 @@ and processing of (multi) sensor data in real time on a PC and output results.
 
 Documentation is provided at [doc.rs](https://docs.rs/lasprs/latest/lasprs).
 
-## Python bindings
+
+## Python bindings and examples
 
 The library has Python bindings (via [pyo3](https://pyo3.rs), which can be installed via:
 
 ```
-$ pip install git+https://code.ascee.nl/ascee/lasprs --install-option "--all-features"
+$ pip install git+https://code.ascee.nl/ascee/lasprs --install-option "python-bindings"
 ```
 

src/daq/api/mod.rs

@@ -32,7 +32,10 @@ pub trait Stream {
 }
 
 /// Stream API descriptor: type and corresponding text
-#[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
+// Do the following when Pyo3 0.22 can finally be used combined with rust-numpy:
+//#[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
+// For now:
+#[cfg_attr(feature = "python-bindings", pyclass)]
 #[derive(strum_macros::EnumMessage, Debug, Clone, PartialEq, Serialize, Deserialize, strum_macros::Display)]
 #[allow(dead_code)]
 pub enum StreamApiDescr {

src/daq/datatype.rs

@@ -7,8 +7,11 @@ use crate::config::*;
 
 /// Data type description for samples coming from a stream
 #[derive(strum_macros::EnumMessage, PartialEq, Copy, Debug, Clone, Serialize, Deserialize)]
+// Do the following when Pyo3 0.22 can finally be used combined with rust-numpy:
+//#[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
+// For now:
+#[cfg_attr(feature = "python-bindings", pyclass)]
 #[allow(dead_code)]
-#[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
 pub enum DataType {
     /// 32-bit floats
     #[strum(message = "F32", detailed_message = "32-bits floating points")]

src/daq/mod.rs

@@ -50,7 +50,10 @@ use api::*;
 use crate::config::*;
 /// Stream types that can be started
 ///
-#[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
+// Do the following when Pyo3 0.22 can finally be used combined with rust-numpy:
+// #[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
+// For now:
+#[cfg_attr(feature = "python-bindings", pyclass)]
 #[derive(PartialEq, Clone, Copy)]
 pub enum StreamType {
     /// Input-only stream

src/daq/qty.rs

@@ -7,8 +7,10 @@ use strum_macros;
 use serde::{Serialize, Deserialize};
 
 /// Physical quantities that are I/O of a Daq device.
+// Do the following when Pyo3 0.22 can finally be used combined with rust-numpy:
+// #[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
+#[cfg_attr(feature = "python-bindings", pyclass)]
 #[derive(PartialEq, Serialize, Deserialize, strum_macros::EnumMessage, Debug, Clone, Copy)]
-#[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
 #[allow(dead_code)]
 pub enum Qty {
     /// Number

src/daq/streamerror.rs

@@ -3,7 +3,12 @@ use crate::config::*;
 
 /// Errors that happen in a stream
 #[derive(strum_macros::EnumMessage, PartialEq, Debug, Clone, Display, Copy)]
-#[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
+
+// Do the following when Pyo3 0.22 can finally be used combined with rust-numpy:
+//#[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
+// For now:
+#[cfg_attr(feature = "python-bindings", pyclass)]
+
 pub enum StreamError {
     /// Input overrun
     #[strum(

src/filter/octave.rs

@@ -478,6 +478,7 @@ impl BandDescriptor for ThirdOctaveBandDescriptor {
     }
 }
 
+#[cfg(feature = "python-bindings")]
 #[cfg_attr(feature = "python-bindings", pymethods)]
 impl StandardFilterDescriptor {
     #[pyo3(name = "genFilter")]

src/ps/fft.rs

@@ -34,12 +34,14 @@ impl FFT {
             nfftF: nfft as Flt,
         }
     }
-    pub fn process<'a, T>(&mut self, time: &[Flt], freq: T)
+    pub fn process<'a, T, U>(&mut self, time: T, freq: U)
     where
-        T: Into<ArrayViewMut<'a, Cflt, Ix1>>,
+        T: Into<ArrayView<'a, Flt, Ix1>>,
+        U: Into<ArrayViewMut<'a, Cflt, Ix1>>,
     {
         let mut freq = freq.into();
-        self.timescratch.copy_from_slice(time);
+        let time = time.into();
+        self.timescratch.copy_from_slice(time.as_slice().unwrap());
         let _ = self
             .fft
             .process(&mut self.timescratch, freq.as_slice_mut().unwrap());

src/ps/freqweighting.rs

@@ -1,7 +1,11 @@
 use crate::config::*;
 use strum_macros::{Display, EnumMessage};
 /// Sound level frequency weighting type (A, C, Z)
-#[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
+
+// Do the following when Pyo3 0.22 can finally be used combined with rust-numpy:
+// #[cfg_attr(feature = "python-bindings", pyclass(eq, eq_int))]
+// For now:
+#[cfg_attr(feature = "python-bindings", pyclass)]
 #[derive(Display, Debug, EnumMessage, Default, Clone, PartialEq)]
 pub enum FreqWeighting {
     /// A-weighting

src/ps/ps.rs

@@ -7,8 +7,8 @@ use std::usize;
 
 use crate::Dcol;
 
-use super::window::*;
 use super::fft::FFT;
+use super::window::*;
 use std::mem::MaybeUninit;
 
 use realfft::{RealFftPlanner, RealToComplex};
@@ -46,7 +46,6 @@ pub trait CrossPowerSpecra {
     fn tf(&self, chi: usize, chj: usize, chRef: Option<usize>) -> Array1<Cflt>;
 }
 
-
 impl CrossPowerSpecra for CPSResult {
     fn ap(&self, ch: usize) -> Array1<Flt> {
         // Slice out one value for all frequencies, map to only real part, and
@@ -87,10 +86,10 @@ impl CrossPowerSpecra for CPSResult {
 /// estimation.
 ///
 pub struct PowerSpectra {
-    /// Window used in estimator
+    /// Window used in estimator. The actual Window in here is normalized with
-    pub window: Window,
+    /// the square root of the Window power. This safes one division when
-    /// The window power, is corrected for in power spectra estimants
+    /// processing time data.
-    pub sqrt_win_pwr: Flt,
+    pub window_normalized: Window,
 
     ffts: Vec<FFT>,
 
@@ -103,7 +102,7 @@ pub struct PowerSpectra {
 impl PowerSpectra {
     /// Returns the FFT length used in power spectra computations
     pub fn nfft(&self) -> usize {
-        self.window.win.len()
+        self.window_normalized.win.len()
     }
     /// Create new power spectra estimator. Uses FFT size from window length
     ///
@@ -116,9 +115,12 @@ impl PowerSpectra {
     ///
     /// - `window` - A `Window` struct, from which NFFT is also used.
     ///
-    pub fn newFromWindow(window: Window) -> PowerSpectra {
+    pub fn newFromWindow(mut window: Window) -> PowerSpectra {
         let nfft = window.win.len();
         let win_pwr = window.win.mapv(|w| w.powi(2)).sum() / (nfft as Flt);
+        let sqrt_win_pwr = Flt::sqrt(win_pwr);
+        window.win.mapv_inplace(|v| v / sqrt_win_pwr);
+
         assert!(nfft > 0);
         assert!(nfft % 2 == 0);
 
@@ -128,8 +130,7 @@ impl PowerSpectra {
         let Fft = FFT::new(fft);
 
         PowerSpectra {
-            window,
+            window_normalized: window,
-            sqrt_win_pwr: Flt::sqrt(win_pwr),
             ffts: vec![Fft],
             timedata: Array2::zeros((nfft, 1)),
             freqdata: Array2::zeros((nfft / 2 + 1, 1)),
@@ -138,7 +139,7 @@ impl PowerSpectra {
 
     /// Compute FFTs of input channel data. Stores the scaled FFT data in
     /// self.freqdata.
-    fn compute_ffts(&mut self, timedata: ArrayView2<Flt>) -> &Array2<Cflt> {
+    fn compute_ffts(&mut self, timedata: ArrayView2<Flt>) -> ArrayView2<Cflt> {
         let (n, nch) = timedata.dim();
         let nfft = self.nfft();
         assert!(n == nfft);
@@ -153,25 +154,27 @@ impl PowerSpectra {
         }
 
         assert!(n == self.nfft());
-        assert!(n == self.window.win.len());
+        assert!(n == self.window_normalized.win.len());
-        let sqrt_win_pwr = self.sqrt_win_pwr;
 
         // Multiply signals with window function, and compute fft's for each channel
         Zip::from(timedata.axis_iter(Axis(1)))
             .and(self.timedata.axis_iter_mut(Axis(1)))
             .and(&mut self.ffts)
             .and(self.freqdata.axis_iter_mut(Axis(1)))
-            .par_for_each(|time_in,mut time, fft, mut freq| {
+            .par_for_each(|time_in, mut time_tmp_storage, fft, mut freq| {
+                let DC = time_in.mean().unwrap();
 
+                azip!((t in &mut time_tmp_storage, &tin in time_in, &win in &self.window_normalized.win) {
+                // Substract DC value from time data, as this leaks into
+                // positive frequencies due to windowing.
                 // Multiply with window and copy over to local time data buffer
-                azip!((t in &mut time, &tin in time_in, &win in &self.window.win) *t=tin*win/sqrt_win_pwr);
+                    *t=(tin-DC)*win});
 
-                let tslice = time.as_slice().unwrap();
+                fft.process(&time_tmp_storage, &mut freq);
-                let fslice = freq.as_slice_mut().unwrap();
+                freq[0] = DC + 0. * I;
-                fft.process(tslice, fslice);
             });
 
-        &self.freqdata
+        self.freqdata.view()
     }
 
     /// Compute cross power spectra from input time data. First axis is

src/slm/mod.rs

@@ -24,7 +24,7 @@
 //! let settings = SLMSettingsBuilder::default()
 //!     .fs(48e3)
 //!     .freqWeighting(FreqWeighting::A)
-//!     .timeWeighting(TimeWeighting::Fast)
+//!     .timeWeighting(TimeWeighting::Fast{})
 //!     .filterDescriptors(&[desc]).build().unwrap();
 //! 
 //! let mut slm = SLM::new(settings);
@@ -33,7 +33,7 @@
 //! data[0] = 1.;
 //! 
 //! // Now apply some data. This is a kind of the SLM-s impulse response
-//! let res = slm.run(&data.as_slice().unwrap()).unwrap();
+//! let res = slm.run(data.as_slice().unwrap(), true).unwrap();
 //! 
 //! // Only one channel of result data
 //! assert_eq!(res.len(), 1);

src/slm/settings.rs

@@ -28,6 +28,7 @@ pub struct SLMSettings {
     pub filterDescriptors: Vec<StandardFilterDescriptor>,
 }
 
+#[cfg(feature="python-bindings")]
 #[cfg_attr(feature = "python-bindings", pymethods)]
 impl SLMSettings {
     #[new]

src/slm/slm.rs

@@ -205,6 +205,7 @@ impl SLM {
     }
 }
 
+#[cfg(feature="python-bindings")]
 #[cfg_attr(feature = "python-bindings", pymethods)]
 impl SLM {
     #[new]

src/slm/tw.rs

@@ -1,6 +1,10 @@
 use crate::config::*;
 /// Time weighting to use in level detection of Sound Level Meter.
-#[cfg_attr(feature = "python-bindings", pyclass(eq))]
+/// 
+// Do the following when Pyo3 0.22 can finally be used combined with rust-numpy:
+// #[cfg_attr(feature = "python-bindings", pyclass(eq))]
+// For now:
+#[cfg_attr(feature = "python-bindings", pyclass)]
 #[derive(Clone, Copy, PartialEq)]
 pub enum TimeWeighting {
     // I know that the curly braces here are not required and add some