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13 Commits
ac5c9eeaa0 ... tags

Author SHA1 Message Date
Albin Chaboissier
89ff2827ff Merge branch 'tags' of ssh://git.chaboissier.fr:222/octagonal/oxydsp into tags 2026-04-09 16:35:01 +02:00
Albin Chaboissier
54f26a0dd2 Adds pulse shaping, work stealing 2026-04-09 16:33:42 +02:00
Albin Chaboissier
cc3ae754ff Bfsk modem isolated 2026-03-26 10:44:46 +01:00
Albin Chaboissier
4d548a7973 Idk, i'll proly rebase 2026-03-25 21:17:22 +01:00
Albin Chaboissier
b57b85f959 Tee block, bpsk eye 2026-03-25 16:33:10 +01:00
Albin Chaboissier
7766d9b91d Better tag interface, starting bpsk 2026-03-25 13:27:46 +01:00
Albin Chaboissier
b13e846fa5 Starting to improve tags 2026-03-24 17:39:21 +01:00
Albin Chaboissier
c37fa47b28 Moving examples 2026-03-23 21:17:26 +01:00
Albin Chaboissier
02145b6ef0 Working tx/rx 2026-03-23 20:29:53 +01:00
Albin Chaboissier
6429685cd2 Working fsk transmitter 2026-03-22 19:34:21 +01:00
Albin Chaboissier
f1f769e0e6 Starting fsk demod 2026-03-22 13:29:06 +01:00
Albin Chaboissier
f468cb3c6d Working tag system 2026-03-21 17:16:15 +01:00
Albin Chaboissier
582d876abf Tagged 2026-03-20 23:12:46 +01:00
61 changed files with 4437 additions and 819 deletions
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340
Cargo.lock generated
View File

@ -127,6 +127,28 @@ dependencies = [
"zerocopy",
]
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@ -409,6 +431,33 @@ version = "1.5.0"
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[[package]]
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[[package]]
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@ -451,6 +500,15 @@ dependencies = [
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@ -692,6 +761,59 @@ dependencies = [
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@ -701,6 +823,25 @@ dependencies = [
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@ -719,6 +860,12 @@ version = "1.2.0"
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@ -776,6 +923,21 @@ version = "0.1.2"
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[[package]]
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"oxydsp-dsp",
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@ -1012,19 +1174,6 @@ dependencies = [
"pin-project-lite",
]
[[package]]
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]
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@ -1210,6 +1359,7 @@ dependencies = [
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"libc",
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"rand_core",
"wasip2",
"wasip3",
]
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@ -1904,6 +2063,17 @@ dependencies = [
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]
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@ -2008,7 +2178,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2030,6 +2200,31 @@ dependencies = [
"objc2-foundation 0.3.2",
]
[[package]]
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@ -2049,11 +2244,34 @@ version = "0.2.2"
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@ -2061,7 +2279,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2073,7 +2291,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2096,7 +2316,7 @@ version = "0.2.2"
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@ -2108,7 +2328,7 @@ version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2127,7 +2347,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2140,6 +2360,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2161,7 +2383,7 @@ version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2174,7 +2396,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2186,7 +2408,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2209,7 +2431,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2229,7 +2451,7 @@ version = "0.2.2"
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@ -2241,7 +2463,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -2298,12 +2520,14 @@ dependencies = [
"num",
"oxydsp-flowgraph",
"rustfft",
"wide",
]
[[package]]
name = "oxydsp-flowgraph"
version = "0.1.0"
dependencies = [
"crossbeam-deque",
"oxydsp-flowgraph-macros",
]
@ -2510,6 +2734,22 @@ version = "0.1.28"
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[[package]]
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dependencies = [
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]
[[package]]
name = "quick-error"
version = "2.0.1"
@ -2556,6 +2796,33 @@ version = "6.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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dependencies = [
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"rand_core",
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[[package]]
name = "rand_core"
version = "0.10.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0c8d0fd677905edcbeedbf2edb6494d676f0e98d54d5cf9bda0b061cb8fb8aba"
[[package]]
name = "rand_distr"
version = "0.6.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4d431c2703ccf129de4d45253c03f49ebb22b97d6ad79ee3ecfc7e3f4862c1d8"
dependencies = [
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"rand",
]
[[package]]
name = "range-alloc"
version = "0.1.5"
@ -2668,6 +2935,15 @@ version = "1.0.22"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
[[package]]
name = "safe_arch"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1f7caad094bd561859bcd467734a720c3c1f5d1f338995351fefe2190c45efed"
dependencies = [
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]
[[package]]
name = "same-file"
version = "1.0.6"
@ -3665,6 +3941,16 @@ dependencies = [
"web-sys",
]
[[package]]
name = "wide"
version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "198f6abc41fab83526d10880fa5c17e2b4ee44e763949b4bb34e2fd1e8ca48e4"
dependencies = [
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"safe_arch",
]
[[package]]
name = "winapi-util"
version = "0.1.11"
@ -4096,7 +4382,7 @@ dependencies = [
"android-activity",
"atomic-waker",
"bitflags 2.11.0",
"block2",
"block2 0.5.1",
"bytemuck",
"calloop 0.13.0",
"cfg_aliases",

11
Cargo.toml
View File

@ -1,3 +1,12 @@
[workspace]
resolver = "3"
members = ["example", "oxydsp-dsp","oxydsp-flowgraph"]
members = [
"examples/*",
"oxydsp-dsp",
"oxydsp-flowgraph"
]
[profile.release-with-debug]
inherits = "release"
debug = true

BIN
example/mod.wav
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21
example/out.dot
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@ -1,21 +0,0 @@
digraph G {
node [shape=record];
rankdir=TB;
IterSource_0 [label="{ IterSource |{<o0> output} }"];
Map_1 [label="{ {<i0> input}| Map |{<o0> output} }"];
Repeat_2 [label="{ {<i0> input}| Repeat |{<o0> output} }"];
Nco_3 [label="{ {<i0> frequency}| Nco |{<o0> output} }"];
OscillatorSource_4 [label="{ OscillatorSource |{<o0> output} }"];
Multiplier_5 [label="{ {<i0> input_a|<i1> input_b}| Multiplier |{<o0> output} }"];
TxSink_6 [label="{ {<i0> input}| TxSink }"];
IterSource_0:o0 -> Map_1:i0 [label="bool"];
Map_1:o0 -> Repeat_2:i0 [label="oxydsp_dsp::units::DigitalFrequency"];
Repeat_2:o0 -> Nco_3:i0 [label="oxydsp_dsp::units::DigitalFrequency"];
Nco_3:o0 -> Multiplier_5:i0 [label="num_complex::Complex<f32>"];
OscillatorSource_4:o0 -> Multiplier_5:i1 [label="num_complex::Complex<f32>"];
Multiplier_5:o0 -> TxSink_6:i0 [label="num_complex::Complex<f32>"];
}

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use std::fmt::Display;
use std::fs::File;
use std::io::Write;
use std::sync::mpsc;
use eframe::NativeOptions;
use egui_plot::Line;
use egui_plot::PlotPoints;
use num::Complex;
use oxydsp_dsp::blocks::math::basic::Adder;
use oxydsp_dsp::blocks::math::basic::Multiplier;
use oxydsp_dsp::blocks::synthesis::Nco;
use oxydsp_dsp::blocks::synthesis::OscillatorSource;
use oxydsp_dsp::blocks::utilities::adapters::Map;
use oxydsp_dsp::blocks::utilities::adapters::Repeat;
use oxydsp_dsp::blocks::utilities::channels::TxSink;
use oxydsp_dsp::blocks::utilities::iter::IterSource;
use oxydsp_dsp::units::DigitalFrequency;
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::Block;
use oxydsp_flowgraph::block::BlockResult;
use oxydsp_flowgraph::block::SyncBlock;
use oxydsp_flowgraph::block::SyncBlockIO;
use oxydsp_flowgraph::flowgraph;
use oxydsp_flowgraph::graph::FlowGraph;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use oxydsp_flowgraph::io::PopIterable;
use oxydsp_flowgraph::sync_block;
#[derive(BlockIO)]
#[sync_block(tagged)]
pub struct Printer<T: 'static + Display>
{
#[input]
input: In<T>,
n: usize,
}
// impl<T: 'static + Display> Block for Printer<T>
// where
// T: Display,
// {
// fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
// {
// for x in self.input.pop_iter()
// {
// if self.n.is_multiple_of(2usize.pow(20))
// {
// println!("{}", x.0);
// self.n = 0;
// }
// self.n += 1;
// }
// BlockResult::Ok
// }
// }
impl<'view, T: 'static + Display> SyncBlock<'view> for Printer<T>
{
fn sync_work(state: Self::StateView, input: Self::Input) -> Option<Self::Output>
{
*state.n += 1;
if state.n.is_multiple_of(1_000_000)
{
println!("{}", input);
}
Some(())
}
}
// mod printer_synchronous_block
// {
// struct PrinterView<'view, T>
// {
// n: &'view mut usize,
// _sync_block_phantom: std::marker::PhantomData<'view, T>,
// }
// impl<'view, T: 'static> oxydsp_flowgraph::block::SyncBlockIO<'view> for super::Printer<T>
// {
// type StateView = PrinterView<'view, T>;
// type Input = ();
// type Output = ();
// }
// }
impl<T: 'static + Display> Printer<T>
{
pub fn new(input: In<T>) -> Self
{
Self { input, n: 0 }
}
}
fn main()
{
let (iter_source_a, a) = IterSource::new(0..);
let (iter_source_b, b) = IterSource::new(0..);
let (adder, a) = Adder::new(a, b);
let printer = Printer::new(a);
let fg = flowgraph![iter_source_a, iter_source_b, adder, printer];
let _ = fg.run().join();
}
fn main_fsk()
{
let sample_rate = 48_000;
let sample_per_symbol = 96;
let deviation = DigitalFrequency::from_time_frequency(500., sample_rate as f64);
let carrier = DigitalFrequency::from_time_frequency(1000., sample_rate as f64);
let data = (0..255u8).flat_map(to_bits).collect::<Vec<_>>();
let (bit_stream, bits) = IterSource::new(data.into_iter());
let (to_freq, freq) = Map::new(bits, move |x| [-deviation, deviation][x as usize]);
let (repeat, freq) = Repeat::new(freq, sample_per_symbol);
let (base_oscillator, baseband) = Nco::<f32>::new(freq);
let (local_oscillator, lo) = OscillatorSource::<f32>::new(carrier.into());
let (frontend, passband) = Multiplier::new(baseband, lo);
let (tx, rx) = mpsc::channel::<Complex<f32>>();
let sink = TxSink::new(passband, tx);
let graph = flowgraph![
bit_stream,
to_freq,
repeat,
base_oscillator,
local_oscillator,
frontend,
sink,
];
File::create("out.dot")
.unwrap()
.write_all(graph.get_dot().as_bytes())
.unwrap();
let j = graph.run();
let mut output = vec![];
while let Ok(x) = rx.recv()
{
output.push(x);
}
let _ = j.join();
// Write signal
let spec = hound::WavSpec {
channels: 1,
sample_rate,
bits_per_sample: 16,
sample_format: hound::SampleFormat::Int,
};
let mut writer = hound::WavWriter::create("mod.wav", spec).unwrap();
for x in output.iter()
{
let amplitude = i16::MAX as f32;
writer.write_sample((x.re * amplitude) as i16).unwrap();
}
writer.finalize().unwrap();
//
eframe::run_simple_native("Plot", NativeOptions::default(), move |ctx, _frame| {
egui::CentralPanel::default().show(ctx, |ui| {
egui_plot::Plot::new("hello").show(ui, |plot_ui| {
plot_ui.line(Line::new(
"samples",
output
.iter()
.enumerate()
.map(|(i, s)| [i as f64, s.re as f64])
.collect::<PlotPoints>(),
));
});
ctx.request_repaint();
});
})
.unwrap();
}
pub fn to_bits(n: u8) -> [bool; 8]
{
[
(n & 1) == 1,
(n >> 1) & 1 == 1,
(n >> 2) & 1 == 1,
(n >> 3) & 1 == 1,
(n >> 4) & 1 == 1,
(n >> 5) & 1 == 1,
(n >> 6) & 1 == 1,
(n >> 7) & 1 == 1,
]
}
pub fn from_bits(n: [bool; 8]) -> u8
{
(n[0] as u8)
| ((n[1] as u8) << 1)
| ((n[2] as u8) << 2)
| ((n[3] as u8) << 3)
| ((n[4] as u8) << 4)
| ((n[5] as u8) << 5)
| ((n[6] as u8) << 6)
| ((n[7] as u8) << 7)
}
pub fn gaussian(sigma: f32, t: f32) -> f32
{
let sq = (t - 0.5) / sigma;
(-sq * sq).exp()
}

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[package]
name = "bfsk-modem-tx"
version = "0.1.0"
edition = "2024"
[dependencies]
oxydsp-flowgraph = {path = "../../oxydsp-flowgraph/"}
oxydsp-dsp = {path = "../../oxydsp-dsp/"}
num = "0.4.3"
hound = "3.5.1"
rand = "0.10.0"
cpal = "0.17.3"

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digraph G {
node [shape=record];
rankdir=TB;
IterSource_0 [label="{ IterSource |{<o0> output} }"];
FirFilter_1 [label="{ {<i0> input}| FirFilter |{<o0> output} }"];
Map_2 [label="{ {<i0> input}| Map |{<o0> output} }"];
Repeat_3 [label="{ {<i0> input}| Repeat |{<o0> output} }"];
Nco_4 [label="{ {<i0> frequency}| Nco |{<o0> output} }"];
OscillatorSource_5 [label="{ OscillatorSource |{<o0> output} }"];
Multiplier_6 [label="{ {<i0> input_a|<i1> input_b}| Multiplier |{<o0> output} }"];
MapResultTagged_7 [label="{ {<i0> input}| MapResultTagged |{<o0> output} }"];
NullSink_8 [label="{ {<i0> input}| NullSink }"];
IterSource_0:o0 -> Repeat_3:i0 [label="f32"];
FirFilter_1:o0 -> Map_2:i0 [label="f32"];
Map_2:o0 -> Nco_4:i0 [label="oxydsp_dsp::units::DigitalFrequency"];
Repeat_3:o0 -> FirFilter_1:i0 [label="f32"];
Nco_4:o0 -> Multiplier_6:i0 [label="num_complex::Complex<f32>"];
OscillatorSource_5:o0 -> Multiplier_6:i1 [label="num_complex::Complex<f32>"];
Multiplier_6:o0 -> MapResultTagged_7:i0 [label="num_complex::Complex<f32>"];
MapResultTagged_7:o0 -> NullSink_8:i0 [label="num_complex::Complex<f32>"];
}

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use crate::transmitter::Transmitter;
pub mod transmitter;
fn main()
{
println!("Transmitter");
let tx = Transmitter::start_new();
loop
{
let mut user_input = String::new();
std::io::stdin().read_line(&mut user_input).unwrap();
println!("Transmitting ...");
tx.transmit(user_input.as_bytes().to_vec());
}
}
pub const SAMPLE_RATE: usize = 48_000;
pub const SAMPLE_PER_SYMBOL: usize = 48;
pub const DEVIATION: f64 = 500.;
pub const CARRIER: f64 = 1700.;
pub fn to_bits(n: u8) -> [bool; 8]
{
[
(n & 1) == 1,
(n >> 1) & 1 == 1,
(n >> 2) & 1 == 1,
(n >> 3) & 1 == 1,
(n >> 4) & 1 == 1,
(n >> 5) & 1 == 1,
(n >> 6) & 1 == 1,
(n >> 7) & 1 == 1,
]
}
pub fn from_bits(n: [bool; 8]) -> u8
{
(n[0] as u8)
| ((n[1] as u8) << 1)
| ((n[2] as u8) << 2)
| ((n[3] as u8) << 3)
| ((n[4] as u8) << 4)
| ((n[5] as u8) << 5)
| ((n[6] as u8) << 6)
| ((n[7] as u8) << 7)
}
pub fn gaussian(sigma: f32, t: f32) -> f32
{
let sq = (t - 0.5) / sigma;
(-sq * sq).exp()
}

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use cpal::Stream;
use cpal::traits::DeviceTrait;
use cpal::traits::HostTrait;
use num::Complex;
use oxydsp_dsp::blocks::filtering::fir::FirFilter;
use oxydsp_dsp::blocks::math::basic::Multiplier;
use oxydsp_dsp::blocks::synthesis::Nco;
use oxydsp_dsp::blocks::synthesis::OscillatorSource;
use oxydsp_dsp::blocks::utilities::adapters::FlatMap;
use oxydsp_dsp::blocks::utilities::adapters::Map;
use oxydsp_dsp::blocks::utilities::adapters::Scan;
use oxydsp_dsp::blocks::utilities::channels::RxSource;
use oxydsp_dsp::blocks::utilities::channels::TxSink;
use oxydsp_dsp::filtering::fir::Fir;
use oxydsp_dsp::units::DigitalFrequency;
use oxydsp_flowgraph::flowgraph;
use oxydsp_flowgraph::io::In;
use rand::random;
use std::f32::consts::PI;
use std::net::UdpSocket;
use std::ops::BitXor;
use std::sync::mpsc;
use std::sync::mpsc::Receiver;
use std::sync::mpsc::SyncSender;
use std::sync::mpsc::sync_channel;
use std::thread::JoinHandle;
use std::time::Duration;
use crate::CARRIER;
use crate::DEVIATION;
use crate::SAMPLE_PER_SYMBOL;
use crate::SAMPLE_RATE;
use crate::gaussian;
use crate::to_bits;
pub struct Transmitter
{
flowgraph_handle: JoinHandle<()>,
packet_sender: SyncSender<Vec<u8>>,
stream: Stream,
}
impl Transmitter
{
pub fn start_new() -> Self
{
let carrier = DigitalFrequency::from_time_frequency(CARRIER, SAMPLE_RATE as f64);
let deviation = DigitalFrequency::from_time_frequency(DEVIATION, SAMPLE_RATE as f64);
let (packet_tx, packet_rx): (_, Receiver<Vec<u8>>) = sync_channel(128);
let (packet_rec, packets): (_, In<Vec<u8>>) = RxSource::new(packet_rx);
let (linearizer, bits) = FlatMap::new(packets, |packet| {
// +1 for chksum
let packet_length = packet.len() as u16;
let checksum = packet.iter().copied().reduce(BitXor::bitxor).unwrap();
// Learning sequence
let mut frame = vec![0b10101010; 8];
// Preamble
frame.push(0b01100111);
frame.push(packet_length.to_le_bytes()[0]);
frame.push(packet_length.to_le_bytes()[1]);
frame.extend(packet.iter());
frame.push(checksum);
frame.extend((0..16).map(|_| 0));
frame
.into_iter()
.flat_map(to_bits)
.map(|x| if x { 1. } else { -1. })
});
let (repeat, bits) = FlatMap::new(bits, |symbol| {
let mut v = vec![0.; SAMPLE_PER_SYMBOL - 1];
v.push(symbol);
v
});
// gaussian fir
// let fir = Fir((0..SAMPLE_PER_SYMBOL)
// .map(|x| gaussian(0.3, x as f32 / SAMPLE_PER_SYMBOL as f32))
// .collect());
//.normalized();
// RRC fir
let rrc_symbol_count = 4;
let rrc_fir_length = SAMPLE_PER_SYMBOL * rrc_symbol_count;
let fir = Fir((0..rrc_fir_length)
.map(|x| {
let centered = oxydsp_dsp::map(
x as f32,
0.,
rrc_fir_length as f32,
-(rrc_symbol_count as f32) * 0.5,
rrc_symbol_count as f32 * 0.5,
);
root_raised_cosine(centered, 1., 1.)
})
.collect());
let (bit_filter, bits) = FirFilter::new(bits, fir);
let (to_freq, freq) = Map::new(bits, move |x| {
DigitalFrequency::from_time_frequency(DEVIATION * x as f64, SAMPLE_RATE as f64)
});
let (base_oscillator, baseband) = Nco::<f32>::new(freq);
let (local_oscillator, lo) = OscillatorSource::<f32>::new(carrier.into());
let (frontend, passband) = Multiplier::new(baseband, lo);
let (audio_tx, audio_rx) = mpsc::channel::<Complex<f32>>();
let reverb_length = 200;
// let (reverb, passband) = FirFilter::new(
// passband,
// Fir((0..reverb_length)
// .map(|x| (-5. * (x as f32) / (reverb_length as f32)).exp())
// .collect())
// .normalized(),
// );
//
let (awgn, passband) = Map::new(passband, |x| {
x + Complex::<f32>::new(2. * (random::<f32>() - 0.5), 2. * (random::<f32>() - 0.5))
* 0.0
});
let tx_sink = TxSink::new(passband, audio_tx);
let graph = flowgraph![
packet_rec,
linearizer,
//reverb,
bit_filter,
//udp_map,
to_freq,
repeat,
base_oscillator,
local_oscillator,
frontend,
awgn,
tx_sink,
];
// Open output device
let host = cpal::default_host();
let device = host
.default_output_device()
.expect("no output device available");
let mut supported_configs_range = device
.supported_output_configs()
.expect("error while querying configs");
let supported_config = supported_configs_range
.next()
.expect("no supported config?!")
.with_sample_rate(SAMPLE_RATE as u32);
let stream = device
.build_output_stream(
&supported_config.into(),
move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
for x in data.iter_mut()
{
if let Ok(y) = audio_rx.try_recv()
{
*x = y.re * 0.01;
}
else
{
*x = 0.;
}
}
},
move |err| panic!(),
None, // None=blocking, Some(Duration)=timeout
)
.unwrap();
Self {
flowgraph_handle: graph.run(),
packet_sender: packet_tx,
stream,
}
}
pub fn transmit(&self, data: Vec<u8>)
{
let _ = self.packet_sender.send(data);
}
}
pub fn root_raised_cosine(t: f32, beta: f32, ts: f32) -> f32
{
let eps = 1e-8;
if t.abs() < eps
{
// t = 0 special case
return (1.0 / ts.sqrt()) * (1.0 + beta * (4.0 / PI - 1.0));
}
if beta > 0.0 && (t.abs() - ts / (4.0 * beta)).abs() < eps
{
// t = ±T / (4β) special case
let term1 = (1.0 + 2.0 / PI) * (PI / (4.0 * beta)).sin();
let term2 = (1.0 - 2.0 / PI) * (PI / (4.0 * beta)).cos();
return (beta / (ts.sqrt() * 2.0_f32.sqrt())) * (term1 + term2);
}
// General case
let numerator = (PI * t * (1.0 - beta) / ts).sin()
+ 4.0 * beta * t / ts * (PI * t * (1.0 + beta) / ts).cos();
let denominator = PI * t * (1.0 - (4.0 * beta * t / ts).powi(2)) / ts;
(1.0 / ts.sqrt()) * (numerator / denominator)
}

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/target

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[package]
name = "example"
name = "bfsk-modem"
version = "0.1.0"
edition = "2024"
[dependencies]
oxydsp-flowgraph = {path = "../oxydsp-flowgraph/"}
oxydsp-dsp = {path = "../oxydsp-dsp/"}
oxydsp-flowgraph = {path = "../../oxydsp-flowgraph/"}
oxydsp-dsp = {path = "../../oxydsp-dsp/"}
egui = "0.33.3"
egui_plot = "0.34.1"
eframe = { version = "0.33.3", features = ["default_fonts", "wayland"] }
num = "0.4.3"
hound = "3.5.1"
rand = "0.10.0"
cpal = "0.17.3"

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digraph G {
node [shape=record];
rankdir=TB;
IterSource_0 [label="{ IterSource |{<o0> output} }"];
FirFilter_1 [label="{ {<i0> input}| FirFilter |{<o0> output} }"];
Map_2 [label="{ {<i0> input}| Map |{<o0> output} }"];
Repeat_3 [label="{ {<i0> input}| Repeat |{<o0> output} }"];
Nco_4 [label="{ {<i0> frequency}| Nco |{<o0> output} }"];
OscillatorSource_5 [label="{ OscillatorSource |{<o0> output} }"];
Multiplier_6 [label="{ {<i0> input_a|<i1> input_b}| Multiplier |{<o0> output} }"];
MapResultTagged_7 [label="{ {<i0> input}| MapResultTagged |{<o0> output} }"];
NullSink_8 [label="{ {<i0> input}| NullSink }"];
IterSource_0:o0 -> Repeat_3:i0 [label="f32"];
FirFilter_1:o0 -> Map_2:i0 [label="f32"];
Map_2:o0 -> Nco_4:i0 [label="oxydsp_dsp::units::DigitalFrequency"];
Repeat_3:o0 -> FirFilter_1:i0 [label="f32"];
Nco_4:o0 -> Multiplier_6:i0 [label="num_complex::Complex<f32>"];
OscillatorSource_5:o0 -> Multiplier_6:i1 [label="num_complex::Complex<f32>"];
Multiplier_6:o0 -> MapResultTagged_7:i0 [label="num_complex::Complex<f32>"];
MapResultTagged_7:o0 -> NullSink_8:i0 [label="num_complex::Complex<f32>"];
}

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use crate::receiver::RadioReceiver;
use crate::transmitter::Transmitter;
pub mod receiver;
pub mod transmitter;
fn main()
{
if std::env::args().len() == 2
{
println!("Transmitter");
let tx = Transmitter::start_new();
loop
{
let mut user_input = String::new();
std::io::stdin().read_line(&mut user_input).unwrap();
println!("Transmitting ...");
tx.transmit(user_input.as_bytes().to_vec());
}
}
else
{
println!("Receiver");
let _tx = RadioReceiver::start_new();
}
}
pub const SAMPLE_RATE: usize = 48_000;
pub const SAMPLE_PER_SYMBOL: usize = 48;
pub const DEVIATION: f64 = 500.;
pub const CARRIER: f64 = 1700.;
pub fn to_bits(n: u8) -> [bool; 8]
{
[
(n & 1) == 1,
(n >> 1) & 1 == 1,
(n >> 2) & 1 == 1,
(n >> 3) & 1 == 1,
(n >> 4) & 1 == 1,
(n >> 5) & 1 == 1,
(n >> 6) & 1 == 1,
(n >> 7) & 1 == 1,
]
}
pub fn from_bits(n: [bool; 8]) -> u8
{
(n[0] as u8)
| ((n[1] as u8) << 1)
| ((n[2] as u8) << 2)
| ((n[3] as u8) << 3)
| ((n[4] as u8) << 4)
| ((n[5] as u8) << 5)
| ((n[6] as u8) << 6)
| ((n[7] as u8) << 7)
}
pub fn gaussian(sigma: f32, t: f32) -> f32
{
let sq = (t - 0.5) / sigma;
(-sq * sq).exp()
}

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use std::collections::VecDeque;
use std::net::UdpSocket;
use std::sync::mpsc;
use std::sync::mpsc::Receiver;
use std::thread::JoinHandle;
use cpal::Stream;
use cpal::traits::DeviceTrait;
use cpal::traits::HostTrait;
use eframe::NativeOptions;
use egui::Color32;
use egui_plot::Line;
use egui_plot::PlotPoints;
use num::Complex;
use num::Zero;
use oxydsp_dsp::blocks::filtering::fir::FirFilter;
use oxydsp_dsp::blocks::iq::zero_if::ZeroIf;
use oxydsp_dsp::blocks::ted::early_late::EarlyLateGate;
use oxydsp_dsp::blocks::utilities::adapters::Map;
use oxydsp_dsp::blocks::utilities::adapters::NullSink;
use oxydsp_dsp::blocks::utilities::adapters::Scan;
use oxydsp_dsp::blocks::utilities::adapters::ScanTagged;
use oxydsp_dsp::blocks::utilities::channels::RxSource;
use oxydsp_dsp::blocks::utilities::squelch::Squelch;
use oxydsp_dsp::filtering::fir::Fir;
use oxydsp_dsp::units::DigitalFrequency;
use oxydsp_flowgraph::flowgraph;
use oxydsp_flowgraph::graph::FlowGraph;
use oxydsp_flowgraph::tag::Tag;
use oxydsp_flowgraph::tag::Tagged;
use oxydsp_flowgraph::tag::Tags;
use crate::CARRIER;
use crate::DEVIATION;
use crate::SAMPLE_PER_SYMBOL;
use crate::SAMPLE_RATE;
use crate::gaussian;
use crate::transmitter::root_raised_cosine;
pub enum PacketBuilderBitState
{
WaitingForPreamble,
InPacket,
}
pub enum PacketBuilderByteState
{
Length1,
Length2,
Data,
}
pub struct PacketBuilder
{
current_byte: u8,
bit_index: u8,
bit_state: PacketBuilderBitState,
packet_state: PacketBuilderByteState,
// Packet building
length: u16,
data: Vec<u8>,
}
impl PacketBuilder
{
pub fn new() -> Self
{
Self {
current_byte: 0,
bit_index: 0,
bit_state: PacketBuilderBitState::WaitingForPreamble,
packet_state: PacketBuilderByteState::Length1,
length: 0,
data: vec![],
}
}
fn next_byte(&mut self) -> Option<Vec<u8>>
{
match self.packet_state
{
PacketBuilderByteState::Length1 =>
{
self.length = 0;
self.length |= self.current_byte as u16;
println!("starting packet, length 1 {}", self.current_byte);
self.packet_state = PacketBuilderByteState::Length2;
}
PacketBuilderByteState::Length2 =>
{
println!("starting packet, length 2 {}", self.current_byte);
self.length |= (self.current_byte as u16) << 8;
self.data = vec![];
self.packet_state = PacketBuilderByteState::Data;
println!("length : {}", self.length);
}
PacketBuilderByteState::Data =>
{
self.data.push(self.current_byte);
self.length -= 1;
if self.length == 0
{
println!("finished");
let current = std::mem::replace(self, Self::new());
return Some(current.data);
}
}
}
None
}
pub fn next_bit(&mut self, bit: bool) -> Option<Vec<u8>>
{
self.current_byte >>= 1;
self.current_byte |= (bit as u8) << 7;
match self.bit_state
{
PacketBuilderBitState::WaitingForPreamble =>
{
if self.current_byte == 0b01100111
{
println!("preamble heard !");
self.bit_state = PacketBuilderBitState::InPacket;
self.bit_index = 0;
}
return None;
}
PacketBuilderBitState::InPacket =>
{
self.bit_index += 1;
if self.bit_index == 8
{
let out = self.next_byte();
self.bit_index = 0;
return out;
}
None
}
}
}
}
pub struct RadioReceiver {
//stream: Stream,
//pub packet_receiver: Receiver<Vec<u8>>,
}
impl RadioReceiver
{
pub fn start_new() -> Self
{
let carrier = DigitalFrequency::from_time_frequency(CARRIER, SAMPLE_RATE as f64);
let mut tags = Tags::default();
let (audio_tx, audio_rx) = mpsc::channel();
let (packet_tx, packet_rx) = mpsc::channel::<Vec<u8>>();
let (source, signal) = RxSource::new(audio_rx);
let (inspect, signal) = Map::new(signal, |x| {
//println!("{x}");
x
});
let (mut zero_if, iq) = ZeroIf::new(signal, carrier.into());
zero_if.set_fir(Fir::lowpass(
DigitalFrequency::from_time_frequency(2. * DEVIATION + 100., SAMPLE_RATE as f64),
SAMPLE_PER_SYMBOL * 4,
));
let (squelch, iq) = Squelch::new(iq, 5., 100);
let (arg_extract, arg) = Scan::new(iq, Complex::zero(), |state, sample| {
let angle: Complex<f32> = sample / *state;
*state = sample;
angle.arg()
/ DigitalFrequency::from_time_frequency(DEVIATION, SAMPLE_RATE as f64).as_rad()
as f32
});
// gaussian fir
let fir = Fir((0..SAMPLE_PER_SYMBOL)
.map(|x| gaussian(0.3, x as f32 / SAMPLE_PER_SYMBOL as f32))
.collect())
.normalized();
// RRC fir
let rrc_symbol_count = 4;
let rrc_fir_length = SAMPLE_PER_SYMBOL * rrc_symbol_count;
let fir = Fir((0..rrc_fir_length)
.map(|x| {
let centered = oxydsp_dsp::map(
x as f32,
0.,
rrc_fir_length as f32,
-(rrc_symbol_count as f32) * 0.5,
rrc_symbol_count as f32 * 0.5,
);
root_raised_cosine(centered, 1., 1.)
})
.collect())
.normalized();
let (matched_filter, arg) = FirFilter::new(arg, fir);
let mut elg_loop = Fir(vec![1. / 30.; 30]);
*elg_loop.0.last_mut().unwrap() = 0.3;
let symbol_tag = tags.allocate_tag("early late gate symbol");
let (elg, arg) = EarlyLateGate::new(arg, elg_loop, SAMPLE_PER_SYMBOL, symbol_tag.clone());
// // Eye diagram
let (tx, rx) = mpsc::channel::<(Vec<f32>, f32)>();
//let (eye_sender, arg) = ScanTagged::new(arg, VecDeque::<()>::new(), move |history, x| {
let symbol_tag2 = symbol_tag.clone();
let (eye_sender, arg) = ScanTagged::new(arg, VecDeque::new(), move |history, x| {
let cloned_tag = x.1.clone();
if history.len() == 2 * SAMPLE_PER_SYMBOL
{
history.pop_back();
}
let mut error: f32 = 0.;
let is_symbol_center = x.1.as_ref().is_some_and(|t| {
if let Some(err) = t.retrieve(&symbol_tag2.clone())
{
error = *err;
true
}
else
{
false
}
});
history.push_front(((is_symbol_center, error), x.0));
if history.len() > SAMPLE_PER_SYMBOL && history[SAMPLE_PER_SYMBOL].0.0
{
let _ = tx.send((
history.iter().map(|(_, x)| *x).collect::<Vec<_>>(),
history[SAMPLE_PER_SYMBOL].0.1,
));
}
Tagged::new(x.0, None)
});
let (packet_map, arg) =
ScanTagged::new(arg, PacketBuilder::new(), move |builder, sample| {
if sample
.1
.as_ref()
.is_some_and(|t| t.retrieve(&symbol_tag.clone()).is_some())
&& let Some(packet) = builder.next_bit(sample.0 < 0.)
{
let _ = packet_tx.send(packet);
}
Tagged::new(sample.0, None)
});
let null_sink = NullSink::new(arg);
let graph = flowgraph![
source,
inspect,
squelch,
zero_if,
packet_map,
arg_extract,
//sig_lowpass,
matched_filter,
elg,
eye_sender,
null_sink
];
let t = graph.run();
// Setup input
// let host = cpal::default_host();
// let device = host.default_input_device().expect("No input device");
// let mut supported_configs_range = device
// .supported_input_configs()
// .expect("error while querying configs");
// let supported_config = supported_configs_range
// .next()
// .expect("no supported config?!")
// .with_sample_rate(SAMPLE_RATE as u32);
// let stream = device
// .build_input_stream(
// &supported_config.into(),
// move |data: &[f32], _: &cpal::InputCallbackInfo| {
// for x in data.iter()
// {
// let _ = audio_tx.send(*x);
// }
// },
// move |err| {
// panic!() // react to errors here.
// },
// None, // None=blocking, Some(Duration)=timeout
// )
// .unwrap();
std::thread::spawn(move || {
let socket = UdpSocket::bind("0.0.0.0:25565").unwrap();
let mut buffer = [0u8; 4096];
while let Ok(read) = socket.recv(&mut buffer)
{
let read_buffer = &mut buffer[0..read];
for x in read_buffer.chunks(4)
{
let val = f32::from_le_bytes([x[0], x[1], x[2], x[3]]);
let _ = audio_tx.send(val);
}
}
});
let mut eyes = VecDeque::new();
eframe::run_simple_native("Plot", NativeOptions::default(), move |ctx, _frame| {
while let Ok(x) = packet_rx.try_recv()
{
println!("Got data: {} bytes.", x.len());
let str: String = x.iter().map(|x| *x as char).collect();
println!("-----\n\n{}\n\n-----", str);
}
while let Ok(eye) = rx.try_recv()
{
if eyes.len() >= 100
{
let _ = eyes.pop_back();
}
eyes.push_front(eye);
}
egui::CentralPanel::default().show(ctx, |ui| {
egui_plot::Plot::new("hello").show(ui, |plot_ui| {
for eye in eyes.iter()
{
plot_ui.line(
Line::new(
"eyes",
eye.0
.iter()
.enumerate()
.map(|(i, s)| [i as f64 / 2., *s as f64])
.collect::<PlotPoints>(),
)
.id("eyes")
.color(Color32::GREEN),
);
}
});
ctx.request_repaint();
});
})
.unwrap();
Self {
//stream,
//packet_receiver: packet_rx,
}
}
}
pub fn color_from_err(error: f32, max: f32) -> Color32
{
Color32::RED
.linear_multiply(error.abs() / max)
.blend(Color32::GREEN.linear_multiply((1. - error.abs() / max).max(0.)))
}

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use cpal::Stream;
use cpal::traits::DeviceTrait;
use cpal::traits::HostTrait;
use num::Complex;
use oxydsp_dsp::blocks::filtering::fir::FirFilter;
use oxydsp_dsp::blocks::math::basic::Multiplier;
use oxydsp_dsp::blocks::synthesis::Nco;
use oxydsp_dsp::blocks::synthesis::OscillatorSource;
use oxydsp_dsp::blocks::utilities::adapters::FlatMap;
use oxydsp_dsp::blocks::utilities::adapters::Map;
use oxydsp_dsp::blocks::utilities::adapters::Repeat;
use oxydsp_dsp::blocks::utilities::adapters::Scan;
use oxydsp_dsp::blocks::utilities::channels::RxSource;
use oxydsp_dsp::blocks::utilities::channels::TxSink;
use oxydsp_dsp::filtering::fir::Fir;
use oxydsp_dsp::units::DigitalFrequency;
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::Block;
use oxydsp_flowgraph::block::BlockResult;
use oxydsp_flowgraph::flowgraph;
use oxydsp_flowgraph::graph::FlowGraph;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use rand::random;
use std::f32::consts::PI;
use std::iter::FusedIterator;
use std::net::UdpSocket;
use std::ops::BitXor;
use std::sync::mpsc;
use std::sync::mpsc::Receiver;
use std::sync::mpsc::SyncSender;
use std::sync::mpsc::sync_channel;
use std::thread::JoinHandle;
use std::time::Duration;
use crate::CARRIER;
use crate::DEVIATION;
use crate::SAMPLE_PER_SYMBOL;
use crate::SAMPLE_RATE;
use crate::gaussian;
use crate::to_bits;
pub struct Transmitter
{
flowgraph_handle: JoinHandle<()>,
packet_sender: SyncSender<Vec<u8>>,
stream: Stream,
}
impl Transmitter
{
pub fn start_new() -> Self
{
let carrier = DigitalFrequency::from_time_frequency(CARRIER, SAMPLE_RATE as f64);
let deviation = DigitalFrequency::from_time_frequency(DEVIATION, SAMPLE_RATE as f64);
let (packet_tx, packet_rx): (_, Receiver<Vec<u8>>) = sync_channel(128);
let (packet_rec, packets): (_, In<Vec<u8>>) = RxSource::new(packet_rx);
let (linearizer, bits) = FlatMap::new(packets, |packet| {
// +1 for chksum
let packet_length = packet.len() as u16;
let checksum = packet.iter().copied().reduce(BitXor::bitxor).unwrap();
// Learning sequence
let mut frame = vec![0b10101010; 8];
// Preamble
frame.push(0b01100111);
frame.push(packet_length.to_le_bytes()[0]);
frame.push(packet_length.to_le_bytes()[1]);
frame.extend(packet.iter());
frame.push(checksum);
frame.extend((0..16).map(|_| 0));
frame
.into_iter()
.flat_map(to_bits)
.map(|x| if x { 1. } else { -1. })
});
let (repeat, bits) = FlatMap::new(bits, |symbol| {
let mut v = vec![0.; SAMPLE_PER_SYMBOL - 1];
v.push(symbol);
v
});
// gaussian fir
// let fir = Fir((0..SAMPLE_PER_SYMBOL)
// .map(|x| gaussian(0.3, x as f32 / SAMPLE_PER_SYMBOL as f32))
// .collect());
//.normalized();
// RRC fir
let rrc_symbol_count = 4;
let rrc_fir_length = SAMPLE_PER_SYMBOL * rrc_symbol_count;
let fir = Fir((0..rrc_fir_length)
.map(|x| {
let centered = oxydsp_dsp::map(
x as f32,
0.,
rrc_fir_length as f32,
-(rrc_symbol_count as f32) * 0.5,
rrc_symbol_count as f32 * 0.5,
);
root_raised_cosine(centered, 1., 1.)
})
.collect());
let (bit_filter, bits) = FirFilter::new(bits, fir);
let (to_freq, freq) = Map::new(bits, move |x| {
DigitalFrequency::from_time_frequency(DEVIATION * x as f64, SAMPLE_RATE as f64)
});
let (base_oscillator, baseband) = Nco::<f32>::new(freq);
let (local_oscillator, lo) = OscillatorSource::<f32>::new(carrier.into());
let (frontend, passband) = Multiplier::new(baseband, lo);
let (audio_tx, audio_rx) = mpsc::channel::<Complex<f32>>();
let reverb_length = 200;
let (reverb, passband) = FirFilter::new(
passband,
Fir((0..reverb_length)
.map(|x| (-5. * (x as f32) / (reverb_length as f32)).exp())
.collect())
.normalized(),
);
let (awgn, passband) = Map::new(passband, |x| {
x + Complex::<f32>::new(2. * (random::<f32>() - 0.5), 2. * (random::<f32>() - 0.5))
* 0.3
});
let (udp_map, passband) = Scan::new(
passband,
UdpSocket::bind("0.0.0.0:0").unwrap(),
|sckt, sample| {
std::thread::sleep(Duration::from_micros(12));
sckt.send_to(&(sample.re).to_le_bytes(), "127.0.0.1:25565")
.unwrap();
sample
},
);
let tx_sink = TxSink::new(passband, audio_tx);
let graph = flowgraph![
packet_rec,
linearizer,
reverb,
bit_filter,
udp_map,
to_freq,
repeat,
base_oscillator,
local_oscillator,
frontend,
awgn,
tx_sink,
];
// Open output device
let host = cpal::default_host();
let device = host
.default_output_device()
.expect("no output device available");
let mut supported_configs_range = device
.supported_output_configs()
.expect("error while querying configs");
let supported_config = supported_configs_range
.next()
.expect("no supported config?!")
.with_sample_rate(SAMPLE_RATE as u32);
let stream = device
.build_output_stream(
&supported_config.into(),
move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
for x in data.iter_mut()
{
if let Ok(y) = audio_rx.try_recv()
{
*x = y.re * 0.01;
}
else
{
*x = 0.;
}
}
},
move |err| panic!(),
None, // None=blocking, Some(Duration)=timeout
)
.unwrap();
Self {
flowgraph_handle: graph.run(),
packet_sender: packet_tx,
stream,
}
}
pub fn transmit(&self, data: Vec<u8>)
{
let _ = self.packet_sender.send(data);
}
}
pub fn root_raised_cosine(t: f32, beta: f32, ts: f32) -> f32
{
let eps = 1e-8;
if t.abs() < eps
{
// t = 0 special case
return (1.0 / ts.sqrt()) * (1.0 + beta * (4.0 / PI - 1.0));
}
if beta > 0.0 && (t.abs() - ts / (4.0 * beta)).abs() < eps
{
// t = ±T / (4β) special case
let term1 = (1.0 + 2.0 / PI) * (PI / (4.0 * beta)).sin();
let term2 = (1.0 - 2.0 / PI) * (PI / (4.0 * beta)).cos();
return (beta / (ts.sqrt() * 2.0_f32.sqrt())) * (term1 + term2);
}
// General case
let numerator = (PI * t * (1.0 - beta) / ts).sin()
+ 4.0 * beta * t / ts * (PI * t * (1.0 + beta) / ts).cos();
let denominator = PI * t * (1.0 - (4.0 * beta * t / ts).powi(2)) / ts;
(1.0 / ts.sqrt()) * (numerator / denominator)
}

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[package]
name = "dpsk-modem"
version = "0.1.0"
edition = "2024"
[dependencies]
oxydsp-flowgraph = {path = "../../oxydsp-flowgraph/"}
oxydsp-dsp = {path = "../../oxydsp-dsp/"}
egui = "0.33.3"
egui_plot = "0.34.1"
eframe = { version = "0.33.3", features = ["default_fonts", "wayland"] }
num = "0.4.3"
hound = "3.5.1"
rand = "0.10.0"
cpal = "0.17.3"

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digraph G {
node [shape=record];
rankdir=TB;
IterSource_0 [label="{ IterSource |{<o0> output} }"];
ZeroIf_1 [label="{ {<i0> input}| ZeroIf |{<o0> output} }"];
NullSink_2 [label="{ {<i0> input}| NullSink }"];
Scan_3 [label="{ {<i0> input}| Scan |{<o0> output} }"];
FirFilter_4 [label="{ {<i0> input}| FirFilter |{<o0> output} }"];
Tee_5 [label="{ {<i0> input}| Tee |{<o0> output_a|<o1> output_b} }"];
Map_6 [label="{ {<i0> input}| Map |{<o0> output} }"];
Scan_7 [label="{ {<i0> input}| Scan |{<o0> output} }"];
Multiplier_8 [label="{ {<i0> input_a|<i1> input_b}| Multiplier |{<o0> output} }"];
IterSource_0:o0 -> ZeroIf_1:i0 [label="f32"];
ZeroIf_1:o0 -> Tee_5:i0 [label="num_complex::Complex<f32>"];
Scan_3:o0 -> NullSink_2:i0 [label="()"];
FirFilter_4:o0 -> Scan_3:i0 [label="f32"];
Tee_5:o0 -> Multiplier_8:i0 [label="num_complex::Complex<f32>"];
Tee_5:o1 -> Scan_7:i0 [label="num_complex::Complex<f32>"];
Map_6:o0 -> FirFilter_4:i0 [label="f32"];
Scan_7:o0 -> Multiplier_8:i1 [label="num_complex::Complex<f32>"];
Multiplier_8:o0 -> Map_6:i0 [label="num_complex::Complex<f32>"];
}

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use std::collections::VecDeque;
use std::env::args;
use std::f32::consts::PI;
use std::fs::File;
use std::io::Write;
use std::net::Ipv4Addr;
use std::net::UdpSocket;
use std::os::unix::thread;
use std::sync::mpsc::channel;
use std::sync::mpsc::sync_channel;
use std::time::Duration;
use cpal::traits::DeviceTrait;
use cpal::traits::HostTrait;
use eframe::NativeOptions;
use egui::Color32;
use egui_plot::Line;
use egui_plot::PlotPoints;
use egui_plot::Points;
use num::Complex;
use num::Integer;
use oxydsp_dsp::blocks::filtering::fir::FirFilter;
use oxydsp_dsp::blocks::iq::zero_if::ZeroIf;
use oxydsp_dsp::blocks::math::basic;
use oxydsp_dsp::blocks::math::basic::Multiplier;
use oxydsp_dsp::blocks::synthesis::OscillatorSource;
use oxydsp_dsp::blocks::ted::early_late::EarlyLateGate;
use oxydsp_dsp::blocks::utilities::adapters::FlatMap;
use oxydsp_dsp::blocks::utilities::adapters::Map;
use oxydsp_dsp::blocks::utilities::adapters::MapResultTagged;
use oxydsp_dsp::blocks::utilities::adapters::NullSink;
use oxydsp_dsp::blocks::utilities::adapters::Repeat;
use oxydsp_dsp::blocks::utilities::adapters::Scan;
use oxydsp_dsp::blocks::utilities::adapters::ScanTagged;
use oxydsp_dsp::blocks::utilities::adapters::Tee;
use oxydsp_dsp::blocks::utilities::channels::RxSource;
use oxydsp_dsp::blocks::utilities::channels::TxSink;
use oxydsp_dsp::blocks::utilities::iter::IterSource;
use oxydsp_dsp::filtering::fir::Fir;
use oxydsp_dsp::units::DigitalFrequency;
use oxydsp_flowgraph::block::BlockResult;
use oxydsp_flowgraph::flowgraph;
use oxydsp_flowgraph::io::AnonymousIn;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::tag::Tags;
use rand::random;
const SAMPLE_RATE: usize = 48_000;
const CARRIER: f64 = 1000.;
const SAMPLE_PER_SYMBOL: usize = 48;
fn main()
{
let args = std::env::args();
if args.len() == 1
{
demodulator();
}
else
{
modulator();
}
println!("Hello, world!");
}
fn demodulator()
{
let (signal_tx, signal_rx) = channel();
// std::thread::spawn(move || {
// let udp_socket = UdpSocket::bind("0.0.0.0:25565").unwrap();
// let mut buffer = [0u8; 4096];
// while let Ok(size) = udp_socket.recv(&mut buffer)
// {
// let read = &mut buffer[..size];
// for bytes in read.chunks(4)
// {
// if bytes.len() == 4
// {
// let _ = signal_tx
// .send(f32::from_le_bytes([bytes[0], bytes[1], bytes[2], bytes[3]]));
// }
// }
// }
// });
// Open output device
let host = cpal::default_host();
let device = host
.default_input_device()
.expect("no output device available");
let mut supported_configs_range = device
.supported_input_configs()
.expect("error while querying configs");
let supported_config = supported_configs_range
.next()
.expect("no supported config?!")
.with_sample_rate(SAMPLE_RATE as u32);
let stream = device
.build_input_stream(
&supported_config.into(),
move |data: &[f32], _: &cpal::InputCallbackInfo| {
for x in data.iter()
{
let _ = signal_tx.send(*x);
}
},
move |err| panic!(),
None, // None=blocking, Some(Duration)=timeout
)
.unwrap();
let (signal_source, signal) = IterSource::new(signal_rx.into_iter());
let (mut zero_if, baseband): (_, In<Complex<f32>>) = ZeroIf::new(
signal,
DigitalFrequency::from_time_frequency(CARRIER, SAMPLE_RATE as f64).into(),
);
zero_if.set_fir(Fir::lowpass(
DigitalFrequency::from_time_frequency(CARRIER + 100., SAMPLE_RATE as f64),
100,
));
// Pulse shaping
// gaussian fir
let fir = Fir((0..SAMPLE_PER_SYMBOL)
.map(|x| gaussian(0.3, x as f32 / SAMPLE_PER_SYMBOL as f32))
.collect())
.normalized();
// RRC fir
let rrc_symbol_count = 4;
let rrc_fir_length = SAMPLE_PER_SYMBOL * rrc_symbol_count;
let fir = Fir((0..rrc_fir_length)
.map(|x| {
let centered = oxydsp_dsp::map(
x as f32,
0.,
rrc_fir_length as f32,
-(rrc_symbol_count as f32) * 0.5,
rrc_symbol_count as f32 * 0.5,
);
root_raised_cosine(centered, 1., 1.)
})
.collect())
.normalized();
let (tee, b_a, b_b) = Tee::new(baseband);
let (delay, b_b) = Scan::new(
b_b,
VecDeque::from(vec![Complex::<f32>::new(0., 0.); SAMPLE_PER_SYMBOL]),
|history, x| {
history.push_back(x);
history.pop_front().unwrap().conj()
},
);
let (mult, baseband) = Multiplier::new(b_a, b_b);
let (to_arg, baseband) = Map::new(baseband, |x| (x * Complex::<f32>::new(0., -1.)).arg());
let (phase_filter, baseband) = FirFilter::new(baseband, fir);
let (eye_tx, eye_rx) = channel::<Vec<f32>>();
let (eye, baseband) = Scan::new(baseband, VecDeque::new(), move |state, x| {
if state.len() >= SAMPLE_PER_SYMBOL * 2
{
//state.pop_front();
eye_tx.send(Vec::from(state.clone()));
state.clear();
}
state.push_back(x);
});
let null_sink = NullSink::new(baseband);
let graph = flowgraph![
signal_source,
zero_if,
null_sink,
eye,
phase_filter,
tee,
to_arg,
delay,
mult
];
File::create("demodulator.dot")
.unwrap()
.write_all(graph.get_dot().as_bytes())
.unwrap();
graph.run();
let mut constellation = VecDeque::new();
eframe::run_simple_native("Plot", NativeOptions::default(), move |ctx, _frame| {
while let Ok(sample) = eye_rx.try_recv()
{
if constellation.len() >= 300
{
let _ = constellation.pop_back();
}
constellation.push_front(sample);
}
egui::CentralPanel::default().show(ctx, |ui| {
egui_plot::Plot::new("hello").show(ui, |plot_ui| {
for eye in constellation.iter()
{
plot_ui.line(
Line::new(
"eye",
eye.iter()
.enumerate()
.map(|(i, e)| [i as f64, *e as f64])
.collect::<PlotPoints>(),
)
.color(Color32::GREEN),
);
}
// plot_ui.points(
// Points::new(
// "constellation",
// constellation
// .iter()
// .map(|s| [s.re as f64, s.im as f64])
// .collect::<PlotPoints>(),
// )
// .id("constellation")
// .color(Color32::GREEN),
// );
});
ctx.request_repaint();
});
})
.unwrap();
}
fn modulator()
{
let (data_tx, data_rx) = channel();
std::thread::spawn(move || {
loop
{
let mut str = String::new();
let input = std::io::stdin().read_line(&mut str).unwrap();
for bit in str.as_bytes().iter().copied().flat_map(to_bits)
{
let _ = data_tx.send(bit);
}
}
});
let mut tags = Tags::new();
let (bit_source, bits): (_, In<bool>) = RxSource::new(data_rx);
//let last_tag = tags.allocate_tag("finished");
let (phase_map, phase) = Scan::new(bits, Complex::<f32>::new(1., 0.), |state, bit| {
if bit
{
*state *= Complex::<f32>::new(-1., 0.);
}
*state
});
// Convert to pulse train
let (repeater, phase) = FlatMap::new(phase, |x| {
let mut v = vec![Complex::<f32>::new(0., 0.); SAMPLE_PER_SYMBOL - 1];
//let mut v = vec![x; SAMPLE_PER_SYMBOL - 1];
v.push(x);
v
});
// RRC fir
let rrc_symbol_count = 4;
let rrc_fir_length = SAMPLE_PER_SYMBOL * rrc_symbol_count;
let fir = Fir((0..rrc_fir_length)
.map(|x| {
let centered = oxydsp_dsp::map(
x as f32,
0.,
rrc_fir_length as f32,
-(rrc_symbol_count as f32) * 0.5,
rrc_symbol_count as f32 * 0.5,
);
root_raised_cosine(centered, 1., 1.)
})
.collect());
let (phase_filter, phase) = FirFilter::new(phase, fir);
let (oscillator, passband) = OscillatorSource::<f32>::new(
DigitalFrequency::from_time_frequency(CARRIER, SAMPLE_RATE as f64).into(),
);
let (multiplier, passband) = Multiplier::new(passband, phase);
let reverb_length = 200;
// let (reverb, passband) = FirFilter::new(
// passband,
// Fir((0..reverb_length)
// .map(|x| (-20. * (x as f32) / (reverb_length as f32)).exp())
// .collect())
// .normalized(),
// );
let (awgn, passband) = Map::new(passband, |x| {
x + Complex::<f32>::new(2. * (random::<f32>() - 0.5), 2. * (random::<f32>() - 0.5)) * 0.0
});
let (udp_map, passband) = Scan::new(
passband,
UdpSocket::bind("0.0.0.0:0").unwrap(),
|sckt, sample| {
std::thread::sleep(Duration::from_micros(15));
sckt.send_to(&(sample.re).to_le_bytes(), "127.0.0.1:25565")
.unwrap();
sample
},
);
let (audio_tx, audio_rx) = channel();
let tx_sink = TxSink::new(passband, audio_tx);
let graph = flowgraph![
bit_source,
phase_map,
repeater,
oscillator,
multiplier,
tx_sink, //reverb,
awgn,
udp_map,
phase_filter
];
// Open output device
let host = cpal::default_host();
let device = host
.default_output_device()
.expect("no output device available");
let mut supported_configs_range = device
.supported_output_configs()
.expect("error while querying configs");
let supported_config = supported_configs_range
.next()
.expect("no supported config?!")
.with_sample_rate(SAMPLE_RATE as u32);
let stream = device
.build_output_stream(
&supported_config.into(),
move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
for x in data.iter_mut()
{
if let Ok(y) = audio_rx.try_recv()
{
*x = y.re * 0.01;
}
else
{
*x = 0.;
}
}
},
move |err| panic!(),
None, // None=blocking, Some(Duration)=timeout
)
.unwrap();
let _ = graph.run().join();
}
pub fn to_bits(n: u8) -> [bool; 8]
{
[
(n & 1) == 1,
(n >> 1) & 1 == 1,
(n >> 2) & 1 == 1,
(n >> 3) & 1 == 1,
(n >> 4) & 1 == 1,
(n >> 5) & 1 == 1,
(n >> 6) & 1 == 1,
(n >> 7) & 1 == 1,
]
}
pub fn from_bits(n: [bool; 8]) -> u8
{
(n[0] as u8)
| ((n[1] as u8) << 1)
| ((n[2] as u8) << 2)
| ((n[3] as u8) << 3)
| ((n[4] as u8) << 4)
| ((n[5] as u8) << 5)
| ((n[6] as u8) << 6)
| ((n[7] as u8) << 7)
}
pub fn gaussian(sigma: f32, t: f32) -> f32
{
let sq = (t - 0.5) / sigma;
(-sq * sq).exp()
}
pub fn root_raised_cosine(t: f32, beta: f32, ts: f32) -> f32
{
let eps = 1e-8;
if t.abs() < eps
{
// t = 0 special case
return (1.0 / ts.sqrt()) * (1.0 + beta * (4.0 / PI - 1.0));
}
if beta > 0.0 && (t.abs() - ts / (4.0 * beta)).abs() < eps
{
// t = ±T / (4β) special case
let term1 = (1.0 + 2.0 / PI) * (PI / (4.0 * beta)).sin();
let term2 = (1.0 - 2.0 / PI) * (PI / (4.0 * beta)).cos();
return (beta / (ts.sqrt() * 2.0_f32.sqrt())) * (term1 + term2);
}
// General case
let numerator = (PI * t * (1.0 - beta) / ts).sin()
+ 4.0 * beta * t / ts * (PI * t * (1.0 + beta) / ts).cos();
let denominator = PI * t * (1.0 - (4.0 * beta * t / ts).powi(2)) / ts;
(1.0 / ts.sqrt()) * (numerator / denominator)
}

16
examples/qpsk-modem/Cargo.toml Normal file
View File

@ -0,0 +1,16 @@
[package]
name = "qpsk-modem"
version = "0.1.0"
edition = "2024"
[dependencies]
oxydsp-flowgraph = {path = "../../oxydsp-flowgraph/"}
oxydsp-dsp = {path = "../../oxydsp-dsp/"}
egui = "0.33.3"
egui_plot = "0.34.1"
eframe = { version = "0.33.3", features = ["default_fonts", "wayland"] }
num = "0.4.3"
hound = "3.5.1"
rand = "0.10.0"
cpal = "0.17.3"
rand_distr = "0.6.0"

85
examples/qpsk-modem/src/main.rs Normal file
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@ -0,0 +1,85 @@
use std::time::Instant;
use num::Complex;
use oxydsp_dsp::blocks::filtering::fir::FirFilter;
use oxydsp_dsp::blocks::filtering::pulse_shaping::PulseShaper;
use oxydsp_dsp::blocks::iq::zero_if::ZeroIf;
use oxydsp_dsp::blocks::math::basic::Multiplier;
use oxydsp_dsp::blocks::synthesis::OscillatorSource;
use oxydsp_dsp::blocks::utilities::adapters::{Map, NullSink, Scan};
use oxydsp_dsp::blocks::utilities::iter::IterSource;
use oxydsp_dsp::filtering::fir::Fir;
use oxydsp_dsp::units::DigitalFrequency;
use oxydsp_flowgraph::flowgraph;
use rand::{RngExt, SeedableRng, random};
const CARRRIER_FREQ: f64 = 1000.;
const SAMPLE_RATE: usize = 48_000;
fn main()
{
let bits = (0..1024).map(|_| [random::<bool>(), random::<bool>()]);
let (iter_source, bits) = IterSource::new(bits.cycle());
let (iq_map, iq) = Map::new(bits, |x| match x
{
[true, true] => Complex::new(1., 1.),
[true, false] => Complex::new(1., -1.),
[false, true] => Complex::new(-1., 1.),
[false, false] => Complex::new(-1., -1.),
});
let (pulse_shaper, iq) = PulseShaper::new(iq, Fir::square(200), 200);
let (lo, carrier) = OscillatorSource::new(DigitalFrequency::from_time_frequency(CARRRIER_FREQ, SAMPLE_RATE as f64).into());
let (mixer, passband) = Multiplier::new(iq, carrier);
let (channel, passband) = Scan::new(passband, rand::rngs::SmallRng::seed_from_u64(0), |state, x|
{
x.re + state.sample::<f32, _>(rand_distr::StandardNormal)
});
let (zero_if, iq) = ZeroIf::new(passband, DigitalFrequency::from_time_frequency(CARRRIER_FREQ, SAMPLE_RATE as f64).into());
let (matched_filter, iq) = FirFilter::new(iq, Fir::<f32>::square(200));
let (inspect, iq) = Scan::new(iq, (Instant::now(), 0), |(last, counter), x|
{
*counter += 1;
if *counter >= 1_000_000
{
let time = Instant::now() - *last;
println!("{:.2} Ms/s", 1. / time.as_secs_f32());
*last = Instant::now();
*counter = 0;
}
x
});
let null_sink = NullSink::new(iq);
let graph = flowgraph![iter_source, iq_map, pulse_shaper, lo, mixer, channel, zero_if, matched_filter, inspect, null_sink];
graph.run(6).join();
}
pub fn to_bits(n: u8) -> [bool; 8]
{
[
(n & 1) == 1,
(n >> 1) & 1 == 1,
(n >> 2) & 1 == 1,
(n >> 3) & 1 == 1,
(n >> 4) & 1 == 1,
(n >> 5) & 1 == 1,
(n >> 6) & 1 == 1,
(n >> 7) & 1 == 1,
]
}
pub fn from_bits(n: [bool; 8]) -> u8
{
(n[0] as u8)
| ((n[1] as u8) << 1)
| ((n[2] as u8) << 2)
| ((n[3] as u8) << 3)
| ((n[4] as u8) << 4)
| ((n[5] as u8) << 5)
| ((n[6] as u8) << 6)
| ((n[7] as u8) << 7)
}

1
oxydsp-dsp/Cargo.toml
View File

@ -7,3 +7,4 @@ edition = "2024"
num = "0.4.3"
oxydsp-flowgraph = {path = "../oxydsp-flowgraph/"}
rustfft = "6.4.1"
wide = "1.2.0"

3
oxydsp-dsp/src/blocks.rs
View File

@ -1,3 +1,6 @@
pub mod filtering;
pub mod iq;
pub mod math;
pub mod synthesis;
pub mod ted;
pub mod utilities;

2
oxydsp-dsp/src/blocks/filtering.rs Normal file
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@ -0,0 +1,2 @@
pub mod fir;
pub mod pulse_shaping;

63
oxydsp-dsp/src/blocks/filtering/fir.rs Normal file
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@ -0,0 +1,63 @@
use num::Zero;
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::Block;
use oxydsp_flowgraph::block::BlockResult;
use oxydsp_flowgraph::block::SyncBlock;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use oxydsp_flowgraph::io::PopIterable;
use oxydsp_flowgraph::sync_block;
use std::iter::Sum;
use std::ops::Add;
use std::ops::Mul;
use crate::filtering::fir::Fir;
#[derive(BlockIO)]
pub struct FirFilter<F, T, O>
where
T: Clone + Zero + 'static,
F: Mul<T, Output = O> + Clone + 'static,
O: Add<O, Output = O> + Sum + Clone + Zero + 'static,
{
#[input]
input: In<T>,
#[output]
output: Out<O>,
filter: crate::filtering::fir::FirFilter<F, T, O>,
}
impl<F, T, O> FirFilter<F, T, O>
where
T: Clone + Zero + 'static,
F: Mul<T, Output = O> + Clone + 'static,
O: Add<O, Output = O> + Sum + Clone + Zero,
{
pub fn new(input: In<T>, impulse_response: Fir<F>) -> (Self, In<O>)
{
let (output, filtered) = oxydsp_flowgraph::io::stream();
(
Self {
input,
output,
filter: crate::filtering::fir::FirFilter::new(impulse_response),
},
filtered,
)
}
}
impl<F, T, O> Block for FirFilter<F, T, O>
where
T: Clone + Zero,
F: Mul<T, Output = O> + Clone + 'static,
O: Add<O, Output = O> + Sum + Clone + Zero,
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
self.output.push_iter(self.input.pop_iter().map(|x| (self.filter.next(x.0), x.1).into()));
BlockResult::Ok
}
}

77
oxydsp-dsp/src/blocks/filtering/pulse_shaping.rs Normal file
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@ -0,0 +1,77 @@
use std::iter::Sum;
use std::ops::Add;
use num::Zero;
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::Block;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use crate::filtering::fir::Fir;
use crate::filtering::fir::FirFilter;
#[derive(BlockIO)]
pub struct PulseShaper<T: 'static + std::ops::Mul<Output = T> + std::iter::Sum + Add<T, Output = T> + Sum + Clone + Zero>
{
#[input]
input: In<T>,
#[output]
output: Out<T>,
symbol_length: usize,
remaining: usize,
pulse_shaper: FirFilter<T, T, T>,
}
impl<T: 'static + std::ops::Mul<Output = T> + std::iter::Sum + std::clone::Clone + Zero> PulseShaper<T>
{
pub fn new(input: In<T>, pulse_shape: Fir<T>, symbol_length: usize) -> (Self, In<T>)
{
let (output, pulse_shaped) = oxydsp_flowgraph::io::stream();
(
Self {
input,
output,
symbol_length,
remaining: 0,
pulse_shaper: FirFilter::new(pulse_shape),
},
pulse_shaped,
)
}
}
impl<T: 'static + std::ops::Mul<Output = T> + std::iter::Sum + std::clone::Clone + Zero> Block
for PulseShaper<T>
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
let reader = self.input.read();
let writer = self.output.write();
for _ in 0..writer.len()
{
if self.remaining == 0
{
if let Some(input) = reader.pop()
{
let (data, tag) = input.into();
let _ = writer.push((self.pulse_shaper.next(data), tag).into());
self.remaining = self.symbol_length - 1;
}
else
{
return oxydsp_flowgraph::block::BlockResult::Ok;
}
}
else
{
let _ = writer.push(self.pulse_shaper.next(T::zero()).into());
self.remaining -= 1;
}
}
oxydsp_flowgraph::block::BlockResult::Ok
}
}

1
oxydsp-dsp/src/blocks/iq.rs Normal file
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@ -0,0 +1 @@
pub mod zero_if;

75
oxydsp-dsp/src/blocks/iq/zero_if.rs Normal file
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@ -0,0 +1,75 @@
use num::Complex;
use num::Float;
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::Block;
use oxydsp_flowgraph::block::SyncBlock;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use oxydsp_flowgraph::io::PopIterable;
use oxydsp_flowgraph::sync_block;
use rustfft::FftNum;
use crate::filtering::fir::Fir;
use crate::filtering::fir::FirFilter;
use crate::synthesis::oscillator::Nco;
#[derive(BlockIO)]
pub struct ZeroIf<T: std::clone::Clone + num::Num + Float + From<f32> + 'static>
{
#[input]
input: In<T>,
#[output]
output: Out<Complex<T>>,
local_oscillator: Nco<T>,
filter: FirFilter<Complex<T>, Complex<T>, Complex<T>>,
}
impl<T> ZeroIf<T>
where
T: std::clone::Clone
+ num::Num
+ FftNum
+ From<f32>
+ 'static
+ num::Float
+ num::traits::FloatConst,
{
pub fn new(input: In<T>, lo: Nco<T>) -> (Self, In<Complex<T>>)
{
let (output, port) = oxydsp_flowgraph::io::stream();
(
Self {
input,
output,
local_oscillator: lo,
filter: FirFilter::new(Fir::lowpass(lo.frequency(), 100).normalized_len()),
},
port,
)
}
pub fn set_fir(&mut self, fir: Fir<Complex<T>>)
{
self.filter = FirFilter::new(fir);
}
}
impl<T> Block for ZeroIf<T>
where
T: std::clone::Clone + num::Num + Float + From<f32> + 'static + num::Float,
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
self.output.push_iter(self.input.pop_iter().map(|input| {
let (data, tag) = input.into();
// Mix
let lo_sample = self.local_oscillator.next().unwrap();
let iq = Complex::new(data * lo_sample.re, data * lo_sample.im);
(self.filter.next(iq), tag).into()
}));
oxydsp_flowgraph::block::BlockResult::Ok
}
}

19
oxydsp-dsp/src/blocks/math/basic.rs
View File

@ -1,12 +1,15 @@
use std::ops::{Add, Mul};
use std::ops::Add;
use std::ops::Mul;
use oxydsp_flowgraph::{
BlockIO,
block::{Block, BlockResult, SyncBlock},
io::{In, Out, PopIterable},
sync_block,
tag::TagMergable,
};
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::Block;
use oxydsp_flowgraph::block::BlockResult;
use oxydsp_flowgraph::block::SyncBlock;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use oxydsp_flowgraph::io::PopIterable;
use oxydsp_flowgraph::sync_block;
use oxydsp_flowgraph::tag::TagMergable;
#[derive(BlockIO)]
#[sync_block]

5
oxydsp-dsp/src/blocks/synthesis.rs
View File

@ -31,7 +31,8 @@ impl<T: Float + From<f32> + 'static> Block for OscillatorSource<T>
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
self.output.push_iter((&mut self.nco).map(|x| (x, None)));
self.output
.push_iter((&mut self.nco).map(|x| (x, None).into()));
BlockResult::Ok
}
}
@ -82,7 +83,7 @@ impl<T: Float + From<f32> + 'static> Block for Nco<T>
self.output
.push_iter(&mut self.frequency.pop_iter().map(|f| {
self.nco.set_frequency(f.0);
(self.nco.next().unwrap(), f.1)
(self.nco.next().unwrap(), f.1).into()
}));
BlockResult::Ok
}

1
oxydsp-dsp/src/blocks/ted.rs Normal file
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@ -0,0 +1 @@
pub mod early_late;

119
oxydsp-dsp/src/blocks/ted/early_late.rs Normal file
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@ -0,0 +1,119 @@
use std::collections::VecDeque;
use std::iter::Sum;
use num::Float;
use num::NumCast;
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::SyncBlock;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use oxydsp_flowgraph::sync_block;
use oxydsp_flowgraph::tag::Tag;
use oxydsp_flowgraph::tag::TagKey;
use crate::filtering::fir::Fir;
use crate::filtering::fir::FirFilter;
#[derive(BlockIO)]
#[sync_block(tagged)]
pub struct EarlyLateGate<T: Float + Send + Sync + Sum + Clone + NumCast + 'static>
{
#[input]
input: In<T>,
#[output]
output: Out<T>,
symbol_length: usize,
// Window looking at symbol_length samples at a time
window: VecDeque<T>,
// The current location of the window, in relation to the last sample
window_location: usize,
window_center: usize,
// The next window location, in relation to the last sample such that the window is centered on
// a symbol center (hopefully)
next_sample: f32,
loop_filter: FirFilter<T, T, T>,
symbol_tag_key: TagKey<T>,
}
impl<T> EarlyLateGate<T>
where
T: Float + Sum + Clone + 'static + Send + Sync + NumCast,
{
pub fn new(
input: In<T>,
loop_filter: Fir<T>,
symbol_length: usize,
symbol_tag_key: TagKey<T>,
) -> (Self, In<T>)
{
let (output, samples) = oxydsp_flowgraph::io::stream();
(
Self {
input,
output,
window: VecDeque::with_capacity(symbol_length),
symbol_length,
window_location: 0,
window_center: symbol_length / 2,
next_sample: symbol_length as f32, // We assume that the first symbol is 1.5 windows into
// the stream
loop_filter: FirFilter::new(loop_filter),
symbol_tag_key,
},
samples,
)
}
}
impl<'view, T> SyncBlock<'view> for EarlyLateGate<T>
where
T: Float + Sum + Clone + 'static + Send + Sync + NumCast,
{
fn sync_work(state: Self::StateView, input: Self::Input) -> Option<Self::Output>
{
if state.window.len() < *state.symbol_length
{
state.window.push_back(input.0);
*state.window_location += 1;
return Some(input.0.into());
}
// Bring new sample in
state.window.pop_front();
state.window.push_back(input.0);
*state.window_location += 1;
let sample = state.window[*state.window_center];
let mut tag = None;
if *state.window_location >= *state.next_sample as usize
{
let early_index = *state.window_center - (0.25 * *state.symbol_length as f32) as usize;
let late_index = *state.window_center + (0.25 * *state.symbol_length as f32) as usize;
let early_sample = state.window[early_index];
let late_sample = state.window[late_index];
let error = (late_sample - early_sample) * sample;
let correction = state.loop_filter.next(error);
// Figure out next sample location
*state.next_sample +=
(*state.symbol_length as f32 + correction.to_f32().unwrap()).max(0.);
// Turn everything back relative to current sample
*state.next_sample -= *state.window_location as f32;
*state.window_location = 0;
tag = Some(Tag::with_entry(state.symbol_tag_key.clone(), error));
}
Some((sample, tag).into())
}
}

1
oxydsp-dsp/src/blocks/utilities.rs
View File

@ -1,3 +1,4 @@
pub mod adapters;
pub mod channels;
pub mod iter;
pub mod squelch;

427
oxydsp-dsp/src/blocks/utilities/adapters.rs
View File

@ -1,9 +1,17 @@
use oxydsp_flowgraph::{
BlockIO,
block::{Block, BlockResult},
io::{In, Out, PopIterable, stream},
tag::Tag,
};
use std::iter::FusedIterator;
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::Block;
use oxydsp_flowgraph::block::BlockResult;
use oxydsp_flowgraph::block::SyncBlock;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use oxydsp_flowgraph::io::PopIterable;
use oxydsp_flowgraph::io::stream;
use oxydsp_flowgraph::sync_block;
use oxydsp_flowgraph::tag::Tag;
use oxydsp_flowgraph::tag::TagMergable;
use oxydsp_flowgraph::tag::Tagged;
#[derive(BlockIO)]
pub struct Map<I: 'static, O: 'static, F>
@ -34,12 +42,216 @@ where
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
self.output
.push_iter(self.input.pop_iter().map(|x| ((&self.map)(x.0), x.1)));
self.output.push_iter(
self.input
.pop_iter()
.map(|x| ((&self.map)(x.0), x.1).into()),
);
BlockResult::Ok
}
}
#[derive(BlockIO)]
pub struct MapResult<I: 'static, O: 'static, F>
{
#[input]
input: In<I>,
#[output]
output: Out<O>,
map: F,
}
impl<I: 'static, O: 'static, F> MapResult<I, O, F>
where
F: Fn(I) -> (O, BlockResult),
{
pub fn new(input: In<I>, map: F) -> (Self, In<O>)
{
let (output, mapped) = stream();
(Self { input, output, map }, mapped)
}
}
impl<I: 'static, O: 'static, F> Block for MapResult<I, O, F>
where
F: Fn(I) -> (O, BlockResult),
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
let writer = self.output.write();
let reader = self.input.read();
for _ in 0..(writer.len().min(reader.len()))
{
let (input, tag_opt) = reader.pop().unwrap().into();
let (output, result) = (self.map)(input);
let _ = writer.push((output, tag_opt).into());
match result
{
BlockResult::Terminated | BlockResult::Exit =>
{
return result;
}
BlockResult::Ok =>
{}
}
}
BlockResult::Ok
}
}
#[derive(BlockIO)]
pub struct MapResultTagged<I: 'static, O: 'static, F>
{
#[input]
input: In<I>,
#[output]
output: Out<O>,
map: F,
}
impl<I: 'static, O: 'static, F> MapResultTagged<I, O, F>
where
F: Fn(Tagged<I>) -> (Tagged<O>, BlockResult),
{
pub fn new(input: In<I>, map: F) -> (Self, In<O>)
{
let (output, mapped) = stream();
(Self { input, output, map }, mapped)
}
}
impl<I: 'static, O: 'static, F> Block for MapResultTagged<I, O, F>
where
F: Fn(Tagged<I>) -> (Tagged<O>, BlockResult),
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
let writer = self.output.write();
let reader = self.input.read();
for _ in 0..(writer.len().min(reader.len()))
{
let (input, tag_opt) = reader.pop().unwrap().into();
let (tagged_out, result) = (self.map)((input, tag_opt.clone()).into());
let (output, tag_out) = tagged_out.into();
let _ = writer.push((output, tag_opt.merge(&tag_out)).into());
match result
{
BlockResult::Terminated | BlockResult::Exit =>
{
return result;
}
BlockResult::Ok =>
{}
}
}
BlockResult::Ok
}
}
#[derive(BlockIO)]
pub struct Scan<I: 'static, O: 'static, S, F>
where
F: Fn(&mut S, I) -> O,
{
#[input]
input: In<I>,
#[output]
output: Out<O>,
state: S,
map: F,
}
impl<I: 'static, O: 'static, S, F> Scan<I, O, S, F>
where
F: Fn(&mut S, I) -> O,
{
pub fn new(input: In<I>, initial_state: S, map: F) -> (Self, In<O>)
{
let (output, mapped) = stream();
(
Self {
input,
output,
state: initial_state,
map,
},
mapped,
)
}
}
impl<I, O, S, F> Block for Scan<I, O, S, F>
where
I: 'static,
O: 'static,
F: Fn(&mut S, I) -> O,
{
fn work(&mut self) -> BlockResult {
self.output.push_iter(self.input.pop_iter()
.map(|x| ((self.map)(&mut self.state, x.0), x.1).into()));
BlockResult::Ok
}
}
#[derive(BlockIO)]
#[sync_block(tagged)]
pub struct ScanTagged<I: 'static, O: 'static, S, F>
where
F: Fn(&mut S, Tagged<I>) -> Tagged<O>,
{
#[input]
input: In<I>,
#[output]
output: Out<O>,
state: S,
map: F,
}
impl<I: 'static, O: 'static, S, F> ScanTagged<I, O, S, F>
where
F: Fn(&mut S, Tagged<I>) -> Tagged<O>,
{
pub fn new(input: In<I>, initial_state: S, map: F) -> (Self, In<O>)
{
let (output, mapped) = stream();
(
Self {
input,
output,
state: initial_state,
map,
},
mapped,
)
}
}
impl<'view, I, O, S, F> SyncBlock<'view> for ScanTagged<I, O, S, F>
where
I: 'static,
O: 'static,
S: 'view,
F: Fn(&mut S, Tagged<I>) -> Tagged<O> + 'view,
{
fn sync_work(state: Self::StateView, input: Self::Input) -> Option<Self::Output>
{
Some((*state.map)(state.state, input))
}
}
#[derive(BlockIO)]
pub struct Repeat<T: 'static>
{
@ -84,22 +296,24 @@ impl<T: Clone + 'static> Block for Repeat<T>
{
if self.remaining == 0 || self.current.is_none()
{
self.current = Some(reader.pop_tagged().unwrap());
self.remaining = self.repetitions;
if let Some(x) = reader.pop()
{
self.current = Some(x.into());
self.remaining = self.repetitions;
}
else
{
return BlockResult::Ok;
}
}
writer
.push(self.current.clone().unwrap())
.push(self.current.clone().unwrap().into())
.unwrap_or_else(|_| panic!());
match &mut self.current
if let Some((_, tag)) = &mut self.current
{
Some((_, tag)) =>
{
*tag = None;
}
None =>
{}
*tag = None;
}
self.remaining -= 1;
@ -108,3 +322,180 @@ impl<T: Clone + 'static> Block for Repeat<T>
BlockResult::Ok
}
}
#[derive(BlockIO)]
#[sync_block]
pub struct NullSink<T: 'static>
{
#[input]
input: In<T>,
}
impl<T: 'static> NullSink<T>
{
pub fn new(input: In<T>) -> Self
{
Self { input }
}
}
impl<'view, I: 'static> SyncBlock<'view> for NullSink<I>
{
fn sync_work(_: Self::StateView, _: Self::Input) -> Option<Self::Output>
{
// Don't do shit !
Some(())
}
}
#[derive(BlockIO)]
pub struct Tee<T: 'static + Clone>
{
#[input]
input: In<T>,
#[output]
output_a: Out<T>,
#[output]
output_b: Out<T>,
}
impl<T: 'static + Clone> Tee<T>
{
pub fn new(input: In<T>) -> (Self, In<T>, In<T>)
{
let (output_a, port_a) = stream();
let (output_b, port_b) = stream();
(
Self {
input,
output_a,
output_b,
},
port_a,
port_b,
)
}
}
impl<T: 'static + Clone> Block for Tee<T>
{
fn work(&mut self) -> BlockResult
{
let writer_a = self.output_a.write();
let writer_b = self.output_b.write();
for x in self
.input
.pop_iter()
.take(writer_a.len().min(writer_b.len()))
{
let _ = writer_a.push(x.clone());
let _ = writer_b.push(x);
}
BlockResult::Ok
}
}
#[derive(BlockIO)]
pub struct FlatMap<I, O, F>
where
I: 'static,
O: IntoIterator + 'static,
O::IntoIter: FusedIterator,
F: Fn(I) -> O,
{
#[input]
input: In<I>,
#[output]
output: Out<O::Item>,
current_iter: Option<O::IntoIter>,
map: F,
}
impl<I, O, F> FlatMap<I, O, F>
where
I: 'static,
O: IntoIterator + 'static,
O::IntoIter: FusedIterator,
F: Fn(I) -> O,
{
pub fn new(input: In<I>, map: F) -> (Self, In<O::Item>)
{
let (output, port) = oxydsp_flowgraph::io::stream();
(
Self {
input,
output,
current_iter: None,
map,
},
port,
)
}
}
impl<I, O, F> Block for FlatMap<I, O, F>
where
I: 'static,
O: IntoIterator + 'static,
O::IntoIter: FusedIterator,
F: Fn(I) -> O,
{
fn work(&mut self) -> BlockResult
{
let writer = self.output.write();
let reader = self.input.read();
let max_write = writer.len();
let mut written = 0;
while written < max_write
{
if let Some(current_iter) = self.current_iter.as_mut()
{
if let Some(next_elt) = current_iter.next()
{
let _ = writer.push((next_elt, None).into());
written += 1;
continue;
}
else
{
// Iterator empty
self.current_iter = None;
}
}
if self.current_iter.is_none()
{
// Get input
if let Some(input) = reader.pop()
{
let mut new_iter = (self.map)(input.0).into_iter();
if let Some(first_elt) = new_iter.next()
{
self.current_iter = Some(new_iter);
let _ = writer.push((first_elt, input.1).into());
written += 1;
}
else
{
// Iterator empty
self.current_iter = None;
continue;
}
}
else
{
// Cannot continue
break;
}
}
}
BlockResult::Ok
}
}

20
oxydsp-dsp/src/blocks/utilities/channels.rs
View File

@ -1,10 +1,14 @@
use std::sync::mpsc::{Receiver, Sender, SyncSender};
use std::sync::mpsc::Receiver;
use std::sync::mpsc::Sender;
use std::sync::mpsc::SyncSender;
use oxydsp_flowgraph::{
BlockIO,
block::{Block, BlockResult},
io::{In, Out, PopIterable, stream},
};
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::Block;
use oxydsp_flowgraph::block::BlockResult;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use oxydsp_flowgraph::io::PopIterable;
use oxydsp_flowgraph::io::stream;
#[derive(BlockIO)]
pub struct RxSource<Rx, I: 'static>
@ -45,7 +49,9 @@ impl<I: 'static> Block for RxSource<Receiver<I>, I>
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
if self.output.push_iter(self.input.iter().map(|x| (x, None)))
if self
.output
.push_iter(self.input.try_iter().map(|x| (x, None).into()))
{
BlockResult::Ok
}

52
oxydsp-dsp/src/blocks/utilities/iter.rs
View File

@ -1,15 +1,21 @@
use oxydsp_flowgraph::{
BlockIO,
block::{Block, BlockResult},
io::{In, Out, stream},
};
use std::iter::Peekable;
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::Block;
use oxydsp_flowgraph::block::BlockResult;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use oxydsp_flowgraph::io::stream;
use oxydsp_flowgraph::tag::Tag;
use oxydsp_flowgraph::tag::TagKey;
#[derive(BlockIO)]
pub struct IterSource<I: Iterator>
where
I::Item: 'static,
{
iter: I,
iter: Peekable<I>,
finished_tag: Option<TagKey<()>>,
#[output]
output: Out<I::Item>,
@ -23,7 +29,19 @@ where
pub fn new(iter: I) -> (Self, In<I::Item>)
{
let (output, items) = stream();
(Self { iter, output }, items)
(
Self {
iter: iter.peekable(),
finished_tag: None,
output,
},
items,
)
}
pub fn tag_last_with(&mut self, finished_tag: TagKey<()>)
{
self.finished_tag = Some(finished_tag);
}
}
@ -34,13 +52,21 @@ where
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
if self.output.push_iter((&mut self.iter).map(|x| (x, None)))
let writer = self.output.write();
for _ in 0..writer.len()
{
BlockResult::Ok
}
else
{
BlockResult::Terminated
if let Some(element) = self.iter.next()
{
let mut tag = None;
if let Some(tag_key) = &self.finished_tag
&& self.iter.peek().is_none()
{
tag = Some(Tag::with_entry(tag_key.clone(), ()));
}
let _ = writer.push((element, tag).into());
}
}
BlockResult::Ok
}
}

83
oxydsp-dsp/src/blocks/utilities/squelch.rs Normal file
View File

@ -0,0 +1,83 @@
use std::collections::VecDeque;
use std::iter::Sum;
use num::Float;
use num::FromPrimitive;
use num::One;
use num::Zero;
use num::complex::ComplexFloat;
use oxydsp_flowgraph::BlockIO;
use oxydsp_flowgraph::block::Block;
use oxydsp_flowgraph::block::BlockResult;
use oxydsp_flowgraph::io::In;
use oxydsp_flowgraph::io::Out;
use oxydsp_flowgraph::io::PopIterable;
#[derive(BlockIO)]
pub struct Squelch<T>
where
T: ComplexFloat + 'static,
T::Real: Float + One + Zero + FromPrimitive + Sum + Clone,
{
#[input]
input: In<T>,
#[output]
output: Out<T>,
trigger_level: T::Real,
history: VecDeque<T::Real>,
sum: T::Real,
divider: T::Real,
}
impl<T> Squelch<T>
where
T: ComplexFloat + 'static,
T::Real: Float + Sum + Clone + FromPrimitive,
{
pub fn new(input: In<T>, trigger_level: T::Real, mean_length: usize) -> (Self, In<T>)
{
let (output, port) = oxydsp_flowgraph::io::stream();
(
Self {
input,
output,
trigger_level,
history: VecDeque::from(vec![T::Real::zero(); mean_length]),
sum: T::Real::zero(),
divider: T::Real::from_usize(mean_length).unwrap(),
},
port,
)
}
}
impl<T> Block for Squelch<T>
where
T: ComplexFloat + 'static,
T::Real: Float + Sum + Clone + FromPrimitive,
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
let writer = self.output.write();
for x in self.input.pop_iter().take(writer.len())
{
let (element, tag) = x.into();
let oldest = self.history.pop_front().unwrap();
let newest = element.abs();
self.history.push_back(newest);
self.sum = self.sum - oldest;
self.sum = self.sum + newest;
if (self.sum / self.divider) > self.trigger_level
{
let _ = writer.push((element, tag).into());
}
}
BlockResult::Ok
}
}

2
oxydsp-dsp/src/filtering.rs Normal file
View File

@ -0,0 +1,2 @@
pub mod fir;
pub mod history_buf;

309
oxydsp-dsp/src/filtering/fir.rs Normal file
View File

@ -0,0 +1,309 @@
use num::Complex;
use num::Float;
use num::FromPrimitive;
use num::One;
use num::Zero;
use num::complex::ComplexFloat;
use rustfft::FftNum;
use rustfft::FftPlanner;
use std::array;
use std::collections::VecDeque;
use std::f64::consts::PI;
use std::iter::Sum;
use std::ops::Add;
use std::ops::Div;
use std::ops::Mul;
use crate::filtering::history_buf::HistoryBuf;
use crate::map;
use crate::units::DigitalFrequency;
/// Represents a finite impulse response as a vector
/// of values in time.
///
/// Convention
/// indices : 0 ----------------- fir.0.len - 1
/// time : ---------------->
///
/// For a reverb ir for example the clap would be at index 0
/// and the reverb tail towards the end of the vector.
pub struct Fir<T>(pub Vec<T>);
impl<T> Fir<Complex<T>>
where
T: FftNum + Float + Clone,
{
/// Synthesizes an impulse response from a transfer function using an inverse fourrier
/// transform.
///
/// The input units are thus :
/// Transfer function :
/// start center end
/// [ ]
/// frequency :
/// 0 pi 2*pi
/// = pi, -pi 0
/// nyquist's frequency
/// (As the frequencies are periodic)
///
pub fn from_transfer_function(tf: impl AsRef<[Complex<T>]>) -> Fir<Complex<T>>
{
let mut planner = FftPlanner::new();
let tf_len = tf.as_ref().len();
let ifft = planner.plan_fft_inverse(tf.as_ref().len());
let mut fir = tf.as_ref().to_vec();
ifft.process(fir.as_mut_slice());
let mut shifted_fir = vec![];
for i in 0..tf_len
{
let k = (tf_len - (tf_len / 2) + i) % tf_len;
shifted_fir.push(fir[k]);
}
Fir(shifted_fir)
}
/// Creates a low pass filter with the following ideal transfer function using the ifft method:
///
/// ________________ ________________
/// |____________________|
/// 0 cuttoff -cuttoff 0
///
pub fn lowpass(cutoff: DigitalFrequency, length: usize) -> Fir<Complex<T>>
{
let mut tf = vec![Complex::<T>::zero(); length];
let cutoff_bin = map(cutoff.as_rad(), 0., 2. * PI, 0., length as f64).floor() as usize;
for i in 0..cutoff_bin
{
tf[i] = Complex::<T>::one();
tf[length - i - 1] = Complex::<T>::one();
}
Self::from_transfer_function(tf)
}
}
impl<T> Fir<T>
where
T: ComplexFloat + Div<T::Real, Output = T> + Copy + Sum,
T::Real: Float,
{
/// Returns the same impulse response
/// normalized by the length of the sum of the vectors.
pub fn normalized(mut self) -> Self
{
let sum: T = self.0.iter().copied().sum();
let len = Float::sqrt(sum.im() * sum.im() + sum.re() * sum.re());
self.0.iter_mut().for_each(|x| *x = *x / len);
self
}
}
impl<T> Fir<T>
where
T: ComplexFloat + Div<T::Real, Output = T>,
T::Real: Float + FromPrimitive,
{
/// Returns the same impulse response
/// normalized by the length of the impulse response.
pub fn normalized_len(mut self) -> Self
{
let len = T::Real::from_usize(self.0.len()).unwrap();
self.0.iter_mut().for_each(|x| *x = *x / len);
self
}
}
impl<T> Fir<T>
where
T: ComplexFloat + Div<T::Real, Output = T> + Copy + Add<T, Output = T>,
T::Real: Float,
{
/// Returns the same impulse response
/// normalized by the energy or the sum of the squares of the magnitues
/// of the impulse response
pub fn normalized_sqr(mut self) -> Self
{
let sum = self
.0
.iter()
.copied()
.map(|x| x.abs() * x.abs())
.reduce(|x, y| x + y)
.unwrap();
self.0.iter_mut().for_each(|x| *x = *x / sum);
self
}
}
impl<T> Fir<T>
where
T: ComplexFloat + FromPrimitive,
{
/// Creates a square unit impulse response :
/// a vector of length `length` filled with ones
pub fn square(length: usize) -> Self
{
Self((0..length).map(|_| T::one()).collect())
}
/// Creates a simple proportional integral (PI) loop impulse response :
///
/// FIR:
/// ```text
/// _ ................................... Kp (`proportional_gain`)
/// |
/// |
/// |
///  |____________________________ ...... Ki (`integral_gain`)
///    |
///
/// 0 ------------------------- `length`
/// ```
///
pub fn proportional_integral(length: usize, proportional_gain: T, integral_gain: T) -> Self
{
Self(
(0..length)
.map(|i| {
if i == 0
{
proportional_gain + integral_gain
}
else
{
integral_gain
}
})
.collect(),
)
}
/// Creates a root raised cosine (RRC) FIR of length `length`
/// with the given roll off factor.
///
/// The corresponding RC (convolution of this filter with itself)
/// has its zero crossing every `symbol_length` samples (except at 0).
pub fn root_raised_cosine(length: usize, roll_off: f64, symbol_length: usize) -> Self
{
Self(
(0..length)
.map(|i| {
let t = map(
i as f64,
0.,
length as f64,
-(length as f64) * 0.5,
length as f64 * 0.5,
) / symbol_length as f64;
T::from_f64(root_raised_cosine(t, roll_off, 1.)).unwrap()
})
.collect(),
)
}
}
/// A simple convolutional finite impulse response filter
pub struct FirFilter<F, T, O>
where
F: Mul<T, Output = O>,
O: Add<O, Output = O> + Sum + Clone + Zero,
{
fir: Vec<F>,
//taps: VecDeque<T>,
taps: HistoryBuf<T>
}
impl<F, T, O> FirFilter<F, T, O>
where
T: Clone + Zero,
F: Mul<T, Output = O> + Clone,
O: Add<O, Output = O> + Sum + Clone + Zero,
{
/// Creates a filter with the given impulse response
pub fn new(impulse_response: Fir<F>) -> Self
{
let len = impulse_response.0.len();
Self {
fir: impulse_response.0,
taps: HistoryBuf::new(T::zero(), len),
}
}
/// Gets the next output given an input sample.
///
/// At the beginning, the delay line starts with zeroes.
pub fn next(&mut self, input: T) -> O
{
self.taps.push(input);
let taps = self.taps.as_slice();
Self::dot_prod(&self.fir, taps)
}
pub fn dot_prod(a: &[F], b: &[T]) -> O
{
assert_eq!(a.len(), b.len());
let mut sum: [_; 4] = [O::zero(), O::zero(), O::zero(), O::zero()];
let (a_chunks, a_remainder) = a.as_chunks::<4>();
let (b_chunks, b_remainder) = b.as_chunks::<4>();
for (x, y) in a_chunks.iter().zip(b_chunks.iter())
{
sum[0] = sum[0].clone() + x[0].clone() * y[0].clone();
sum[1] = sum[1].clone() + x[1].clone() * y[1].clone();
sum[2] = sum[2].clone() + x[2].clone() * y[2].clone();
sum[3] = sum[3].clone() + x[3].clone() * y[3].clone();
}
let mut sum = sum[0].clone() + sum[1].clone() + sum[2].clone() + sum[3].clone();
for (x, y) in a_remainder.iter().zip(b_remainder.iter())
{
sum = sum + x.clone() * y.clone();
}
sum
}
}
// Completely stolen from sdrpp code
pub fn estimate_fir_length(transition_width: f64, sample_rate: f64) -> f64
{
3.8 * sample_rate / transition_width
}
/// Root raised cosine function
pub fn root_raised_cosine(t: f64, beta: f64, symbol_time: f64) -> f64
{
let eps = 1e-8;
if t.abs() < eps
{
// t = 0 special case
return (1.0 / symbol_time.sqrt()) * (1.0 + beta * (4.0 / PI - 1.0));
}
if beta > 0.0 && (t.abs() - symbol_time / (4.0 * beta)).abs() < eps
{
// t = ±T / (4β) special case
let term1 = (1.0 + 2.0 / PI) * (PI / (4.0 * beta)).sin();
let term2 = (1.0 - 2.0 / PI) * (PI / (4.0 * beta)).cos();
return (beta / (symbol_time.sqrt() * 2.0_f64.sqrt())) * (term1 + term2);
}
// General case
let numerator = (PI * t * (1.0 - beta) / symbol_time).sin()
+ 4.0 * beta * t / symbol_time * (PI * t * (1.0 + beta) / symbol_time).cos();
let denominator = PI * t * (1.0 - (4.0 * beta * t / symbol_time).powi(2)) / symbol_time;
(1.0 / symbol_time.sqrt()) * (numerator / denominator)
}

48
oxydsp-dsp/src/filtering/history_buf.rs Normal file
View File

@ -0,0 +1,48 @@
/// A queue that always contains the same amount of elements.
///
/// It intuitively record the history of `length` values of a value
/// This implementations allows to get a single contiguous slice view on the history
pub struct HistoryBuf<T>
{
buffer: Box<[T]>,
start: usize,
length: usize,
}
impl<T: Clone> HistoryBuf<T>
{
pub fn new(default: T, length: usize) -> Self
{
Self
{
buffer: vec![default; 2 * length].into_boxed_slice(),
start: 0,
length
}
}
pub fn from_fn(length: usize, mut f: impl FnMut(usize) -> T) -> Self
{
Self
{
buffer: (0..(2 * length)).map(|i| f(i)).collect(),
start: 0,
length
}
}
pub fn push(&mut self, data: T)
{
self.buffer[self.start] = data.clone();
self.buffer[self.start + self.length] = data.clone();
self.start += 1;
self.start %= self.length;
}
pub fn as_slice(&self) -> &[T]
{
&self.buffer[self.start..(self.start + self.length)]
}
}

5
oxydsp-dsp/src/lib.rs
View File

@ -1,10 +1,13 @@
use num::Float;
pub mod blocks;
pub mod filtering;
pub mod synthesis;
pub mod units;
fn map<T: Float>(x: T, x_min: T, x_max: T, o_min: T, o_max: T) -> T
/// Maps a float from a range onto another
/// linearly
pub fn map<T: Float>(x: T, x_min: T, x_max: T, o_min: T, o_max: T) -> T
{
((x - x_min) / (x_max - x_min)) * (o_max - o_min) + o_min
}

28
oxydsp-dsp/src/synthesis/oscillator.rs
View File

@ -8,6 +8,21 @@ use crate::map;
use crate::units::DigitalFrequency;
use crate::units::Phase;
/// Numericaly controlled oscillator
///
/// ```
/// let nco: Nco<f32> = DigitalFrequency::from_rad(2 * f32::PI).into();
/// // Or
/// let nco: Nco<f32> = Nco::from(DigitalFrequency::from_rad(2 * f32::PI));
///
/// // Rotates by 90deg per sample
/// // The next function is from the iterator implementation
/// assert_eq!(nco.next(), Complex::new(1., 0.));
/// assert_eq!(nco.next(), Complex::new(0., 1.));
/// assert_eq!(nco.next(), Complex::new(-1., 0.));
/// assert_eq!(nco.next(), Complex::new(0., -1.));
/// assert_eq!(nco.next(), Complex::new(1., 0.));
/// ```
#[derive(Clone, Copy)]
pub struct Nco<T>
{
@ -21,6 +36,7 @@ pub struct Nco<T>
impl<T> Nco<T>
{
/// Creates a new Nco with a specific frequency starting at phase 0
pub fn new(frequency: DigitalFrequency) -> Self
{
Self {
@ -30,6 +46,13 @@ impl<T> Nco<T>
}
}
/// Gets the current frequency of the oscillator
pub fn frequency(&self) -> DigitalFrequency
{
DigitalFrequency(self.d_phase)
}
/// Creates a new Nco with a specific frequency and starting phase
pub fn with_phase(frequency: DigitalFrequency, phase: Phase) -> Self
{
Self {
@ -39,16 +62,19 @@ impl<T> Nco<T>
}
}
/// Sets the current phase.
pub fn set_phase(&mut self, phase: Phase)
{
self.phase = phase.0.0;
}
/// Sets the current phase
pub fn set_frequency(&mut self, frequency: DigitalFrequency)
{
self.d_phase = frequency.0;
}
/// Steps the oscillator by one sample
pub fn step(&mut self)
{
let (new, _) = self.phase.overflowing_add(self.d_phase);
@ -58,6 +84,8 @@ impl<T> Nco<T>
impl<T: Float + From<f32>> Nco<T>
{
/// Gets the current value of the oscillator as a
/// complex number
pub fn sample(&self) -> Complex<T>
{
let t = map(

17
oxydsp-dsp/src/units.rs
View File

@ -1,16 +1,23 @@
use std::{f64::consts::PI, ops::Neg};
use std::f64::consts::PI;
use std::ops::Neg;
use crate::map;
// Represents digital frequency
/// Represents a digital, sampled frequency
/// as radians per samples in [0; 2*pi[ range
/// mapped to the whole [0; usize::MAX] range
#[derive(Clone, Copy, PartialEq, PartialOrd)]
pub struct DigitalFrequency(pub usize);
/// Represents an absolute phase offset
/// as radians in [0; 2*pi[ range
/// mapped to the whole [0; usize::MAX] range
#[derive(Clone, Copy, PartialEq, PartialOrd)]
pub struct Phase(pub DigitalFrequency);
impl DigitalFrequency
{
/// Creates a DigitalFrequency from rads per samples
pub fn from_rad(radians_per_sample: f64) -> Self
{
// Frequnecy wraps arround : Going at 2 pi radians per second
@ -21,16 +28,21 @@ impl DigitalFrequency
DigitalFrequency(map(f, 0., 2. * PI, 0., usize::MAX as f64).floor() as usize)
}
/// Creates a DigitalFrequency from a frequency given in hertz (s^(-1))
/// in the context of a sample rate also given in hertz
pub fn from_time_frequency(hertz: f64, sample_rate: f64) -> Self
{
Self::from_rad(map(hertz, 0., sample_rate, 0., 2. * PI))
}
/// Gets the frequency as radians per sample
pub fn as_rad(&self) -> f64
{
map(self.0 as f64, 0., usize::MAX as f64, 0., 2. * PI)
}
/// Gets the frequency as hertz in the context of a sample rate
/// also given in hert
pub fn as_time_frequency(&self, sample_rate: f64) -> f64
{
map(self.0 as f64, 0., usize::MAX as f64, 0., sample_rate)
@ -41,6 +53,7 @@ impl Neg for DigitalFrequency
{
type Output = Self;
/// Returns the "negative frequency"
fn neg(self) -> Self::Output
{
DigitalFrequency(usize::MAX - self.0)

1
oxydsp-flowgraph/Cargo.toml
View File

@ -4,4 +4,5 @@ version = "0.1.0"
edition = "2024"
[dependencies]
crossbeam-deque = "0.8.6"
oxydsp-flowgraph-macros = { path = "./oxydsp-flowgraph-macros" }

148
oxydsp-flowgraph/oxydsp-flowgraph-macros/src/lib.rs
View File

@ -1,19 +1,11 @@
use proc_macro::TokenStream;
use zyn::FromInput;
use zyn::ToTokens;
use zyn::ext::AttrExt;
use zyn::ext::FieldsExt;
use zyn::ext::ItemExt;
use zyn::format_ident;
use zyn::ident;
use zyn::parse_input;
use zyn::syn::Attribute;
use zyn::syn::GenericParam;
use zyn::syn::Index;
use zyn::syn::Lit;
use zyn::syn::TypeGenerics;
use zyn::syn::parse_quote;
use zyn::syn::punctuated::Punctuated;
use zyn::syn::spanned::Spanned;
mod sync;
@ -52,53 +44,67 @@ pub fn block_io(
impl {{impl_generics}} oxydsp_flowgraph::block::BlockIO for {{ ident.clone() }} {{ type_generics }}
{{ where_clause }}
{
@block_io_set_index(fields = fields.clone())
@block_io_get_successors(fields = fields.clone())
@block_io_counts(fields = fields.clone())
@block_io_set_streams(fields = fields.clone())
@block_io_create_stream(fields = fields.clone())
@block_io_get_inputs(fields = fields.clone())
@block_io_get_outputs(fields = fields.clone())
@block_io_get_meta(ident = ident.clone(), fields = fields.clone())
}
)
}
#[zyn::element]
fn block_io_set_index(fields: zyn::syn::Fields) -> zyn::TokenStream
fn block_io_get_inputs(fields: zyn::syn::Fields) -> zyn::TokenStream
{
let fields = fields.as_named().unwrap().named.clone();
zyn::zyn!(
fn set_index(&self, block_index: usize)
fn get_inputs_mut(&mut self) -> Vec<&mut dyn oxydsp_flowgraph::io::AnonymousIn>
{
use oxydsp_flowgraph::edge::BlockIOIndex;
let mut acc = vec![];
use oxydsp_flowgraph::block::BlockInput;
@for (field in fields.iter().filter(|x| x.attrs.iter().any(|x| x.is("input"))).enumerate())
{
self.{{field.1.ident}}.set_block_index(BlockIOIndex {block_index, port_index: {{ field.0 }} });
acc.extend(self.{{field.1.ident}}.get_inputs_mut());
}
acc
}
@for (field in fields.iter().filter(|x| x.attrs.iter().any(|x| x.is("output"))).enumerate())
fn get_inputs(&self) -> Vec<&dyn oxydsp_flowgraph::io::AnonymousIn>
{
let mut acc = vec![];
use oxydsp_flowgraph::block::BlockInput;
@for (field in fields.iter().filter(|x| x.attrs.iter().any(|x| x.is("input"))).enumerate())
{
self.{{field.1.ident}}.set_block_index(BlockIOIndex {block_index, port_index: {{ field.0 }} });
acc.extend(self.{{field.1.ident}}.get_inputs());
}
acc
}
)
}
#[zyn::element]
fn block_io_get_successors(fields: zyn::syn::Fields) -> zyn::TokenStream
fn block_io_get_outputs(fields: zyn::syn::Fields) -> zyn::TokenStream
{
let fields = fields.as_named().unwrap().named.clone();
zyn::zyn!(
fn get_successors(&self) -> Vec<oxydsp_flowgraph::edge::BlockIOIndex>
fn get_outputs_mut(&mut self) -> Vec<&mut dyn oxydsp_flowgraph::io::AnonymousOut>
{
let mut output = vec![];
let mut acc = vec![];
use oxydsp_flowgraph::block::BlockOutput;
@for (field in fields.iter().filter(|x| x.attrs.iter().any(|x| x.is("output"))).enumerate())
{
if let Some(block_index) = self.{{ field.1.ident }}.get_consumer_block()
{
output.push(block_index);
}
acc.extend(self.{{field.1.ident}}.get_outputs_mut());
}
output
acc
}
fn get_outputs(&self) -> Vec<&dyn oxydsp_flowgraph::io::AnonymousOut>
{
let mut acc = vec![];
use oxydsp_flowgraph::block::BlockOutput;
@for (field in fields.iter().filter(|x| x.attrs.iter().any(|x| x.is("output"))).enumerate())
{
acc.extend(self.{{field.1.ident}}.get_outputs());
}
acc
}
)
}
@ -144,94 +150,6 @@ fn block_io_get_meta(ident: zyn::syn::Ident, fields: zyn::syn::Fields) -> zyn::T
)
}
#[zyn::element]
fn block_io_counts(fields: zyn::syn::Fields) -> zyn::TokenStream
{
let fields = fields.as_named().unwrap().named.clone();
let input_count = fields
.iter()
.filter(|x| x.attrs.iter().any(|x| x.is("input")))
.count();
let output_count = fields
.iter()
.filter(|x| x.attrs.iter().any(|x| x.is("output")))
.count();
zyn::zyn!(
fn input_count(&self) -> usize
{
return { { input_count } };
}
fn output_count(&self) -> usize
{
return { { output_count } };
}
)
}
#[zyn::element(debug = "pretty")]
fn block_io_set_streams(fields: zyn::syn::Fields) -> zyn::TokenStream
{
zyn::zyn!(
#[allow(unreachable_code)]
fn set_anonymous_out_stream(
&mut self,
output_index: usize,
producer: oxydsp_flowgraph::io::AnonymousStreamProducer,
)
{
match output_index
{
@for (field in fields.iter().filter(|x| x.attrs.iter().any(|x| x.is("output"))).enumerate())
{
{{ field.0 }} => self.{{field.1.ident}}.set_anonymous_stream(producer),
}
_ => panic!("output_index out of bounds.")
};
}
#[allow(unreachable_code)]
fn set_anonymous_in_stream(&mut self, input_index: usize, consumer: oxydsp_flowgraph::io::AnonymousStreamConsumer)
{
match input_index
{
@for (field in fields.iter().filter(|x| x.attrs.iter().any(|x| x.is("input"))).enumerate())
{
{{ field.0 }} => self.{{field.1.ident}}.set_anonymous_stream(consumer),
}
_ => panic!("output_index out of bounds.")
};
}
)
}
#[zyn::element]
fn block_io_create_stream(fields: zyn::syn::Fields) -> zyn::TokenStream
{
zyn::zyn!(
#[allow(unreachable_code)]
fn create_anonymous_stream_for(
&mut self,
output_index: usize,
capacity: usize,
) -> (
oxydsp_flowgraph::io::AnonymousStreamProducer,
oxydsp_flowgraph::io::AnonymousStreamConsumer,
)
{
let output = match output_index
{
@for (field in fields.iter().filter(|x| x.attrs.iter().any(|x| x.is("output"))).enumerate())
{
{{ field.0 }} => self.{{ field.1.ident }}.create_anonymous_stream(capacity),
}
_ => panic!("output_index out of bounds."),
};
return output;
}
)
}
#[zyn::element]
fn out_inner_type(ty: zyn::syn::Type) -> zyn::TokenStream
{

497
oxydsp-flowgraph/oxydsp-flowgraph-macros/src/sync.rs
View File

@ -1,11 +1,7 @@
use zyn::Fields;
use zyn::FromInput;
use zyn::ToTokens;
use zyn::ast::at;
use zyn::ext::AttrExt;
use zyn::ext::FieldsExt;
use zyn::ext::TypeExt;
use zyn::quote;
use zyn::quote::quote;
use zyn::syn::Field;
use zyn::syn::GenericParam;
@ -24,28 +20,41 @@ pub fn sync_block_impl(item: zyn::syn::ItemStruct, config: SyncBlockConfig) -> z
// module to keep everything clean
mod {{ item.ident | snake | ident: "{}_synchronous_block" }}
{
use super::*;
@sync_block_view_struct(item = item.clone())
}
@sync_block_syncio_impl(item = item.clone(), config = *config)
@sync_block_impl_block(item = item.clone())
@sync_block_impl_block(item = item.clone(), tagged = config.tagged)
)
}
// Block implementation for sync block
#[zyn::element]
fn sync_block_syncio_impl(item: zyn::syn::ItemStruct, config: SyncBlockConfig) -> zyn::TokenStream
{
let view_lifetime: GenericParam = parse_quote!('view);
let mut view_generics = item.generics.clone();
view_generics.params.iter_mut().for_each(|x| match x
{
GenericParam::Lifetime(_) =>
{}
GenericParam::Type(type_param) => type_param
.bounds
.push(zyn::syn::TypeParamBound::Lifetime(parse_quote!('view))),
GenericParam::Const(_) =>
{}
});
view_generics.params.insert(0, view_lifetime);
let (view_impl_generics, view_type_generics, _view_where_clause) =
let (view_impl_generics, view_type_generics, view_where_clause) =
view_generics.split_for_impl();
let (_impl_generics, type_generics, where_clause) = item.generics.split_for_impl();
let (_impl_generics, type_generics, _where_clause) = item.generics.split_for_impl();
zyn::zyn!(
impl {{ view_impl_generics }} oxydsp_flowgraph::block::SyncBlockIO<'view> for {{ item.ident }} {{ type_generics }}
{{ where_clause }}
{{ view_where_clause }}
{
// Path within module
type StateView = {{ item.ident | snake | ident: "{}_synchronous_block" }}::{{ item.ident | ident:"{}View" }} {{ view_type_generics }};
@ -55,6 +64,7 @@ fn sync_block_syncio_impl(item: zyn::syn::ItemStruct, config: SyncBlockConfig) -
)
}
// Input/Output types for block
fn sync_block_io_types(
item: zyn::syn::ItemStruct,
io: &'static str,
@ -117,15 +127,26 @@ fn sync_block_io_types(
.into_token_stream()
}
// View struct for sync block
#[zyn::element]
fn sync_block_view_struct(item: zyn::syn::ItemStruct) -> zyn::TokenStream
{
// Create view liftime to add to struct definition
let lifetime: GenericParam = parse_quote!('view);
let mut generics = item.generics.clone();
generics.params.iter_mut().for_each(|x| match x
{
GenericParam::Lifetime(_) =>
{}
GenericParam::Type(type_param) => type_param
.bounds
.push(zyn::syn::TypeParamBound::Lifetime(parse_quote!('view))),
GenericParam::Const(_) =>
{}
});
generics.params.insert(0, lifetime);
let (_impl_generics, type_generics, where_clause) = generics.split_for_impl();
let (impl_generics, _type_generics, where_clause) = generics.split_for_impl();
let fields = &item.fields.as_named().unwrap().named;
let mut state_fields = vec![];
@ -170,7 +191,8 @@ fn sync_block_view_struct(item: zyn::syn::ItemStruct) -> zyn::TokenStream
.filter(|tokens| !tokens.is_empty());
zyn::zyn!(
pub struct {{ item.ident | ident:"{}View" }} {{ type_generics }}
pub struct {{ item.ident | ident:"{}View" }} {{ impl_generics }}
{{ where_clause }}
{
@for (field in state_fields.iter())
{
@ -186,181 +208,7 @@ fn sync_block_view_struct(item: zyn::syn::ItemStruct) -> zyn::TokenStream
)
}
#[zyn::element]
fn sync_block_impl_block(item: zyn::syn::ItemStruct) -> zyn::TokenStream
{
let item2 = item.clone();
let (impl_generics, type_generics, where_clause) = item2.generics.split_for_impl();
let fields = &item.fields.as_named().unwrap().named;
// Retrieve fields
let input_fields = fields
.iter()
.filter(|f| f.attrs.iter().any(|attr| attr.is("input")))
.cloned()
.collect::<Vec<_>>();
let output_fields = fields
.iter()
.filter(|f| f.attrs.iter().any(|attr| attr.is("output")))
.cloned()
.collect::<Vec<_>>();
zyn::zyn!(
impl {{ impl_generics }} oxydsp_flowgraph::block::Block for {{ item.ident }} {{ type_generics }}
{{ where_clause }}
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
// Get writers from outputs
let mut max_len = usize::MAX;
@for (out_field in output_fields.iter())
{
let {{ out_field.ident.clone().unwrap() | ident: "{}_writer"}} = self.{{ out_field.ident }}.write();
max_len = max_len.min({{ out_field.ident.clone().unwrap() | ident: "{}_writer"}}.len());
}
@if (!input_fields.is_empty())
{
@sync_block_block_impl_with_inputs(item = item.clone(), input_fields = input_fields.clone(), output_fields = output_fields.clone())
}
@else
{
@sync_block_block_impl_without_inputs(item = item.clone(), output_fields = output_fields.clone())
}
oxydsp_flowgraph::block::BlockResult::Ok
}
}
)
}
#[zyn::element]
fn sync_block_block_impl_without_inputs(
item: zyn::syn::ItemStruct,
output_fields: Vec<Field>,
) -> zyn::TokenStream
{
zyn::zyn!(
for _ in 0..max_len
{
// Get outputs
@if (output_fields.len() == 1)
{
let {{output_fields[0].ident.clone().unwrap() | ident:"{}_element"}}
}
@else
{
let state = {{ sync_block_make_view_struct(item.clone()) }};
let (@for (out_field in output_fields.iter())
{
{{out_field.ident.clone().unwrap() | ident:"{}_element"}},
}
)
}
= <Self as oxydsp_flowgraph::block::SyncBlock>::sync_work(state, ()).unwrap();
// Now the output samples must be sent to their resepective outputs
@for (out_field in output_fields.iter())
{
{{ out_field.ident.clone().unwrap() | ident: "{}_writer"}}.push(
(
{{ out_field.ident.clone().unwrap() | ident: "{}_element"}}, None
)
);
}
}
)
}
#[zyn::element]
fn sync_block_block_impl_with_inputs(
item: zyn::syn::ItemStruct,
input_fields: Vec<Field>,
output_fields: Vec<Field>,
) -> zyn::TokenStream
{
zyn::zyn!(
// Iterate on inputs
(
@for (in_field in input_fields.iter())
{
&mut self.{{ in_field.ident }},
}
).pop_iter()
.zip(0..max_len)
.for_each(
// Deconstruct foreach arguments
|
(
(@for (in_field in input_fields.iter())
{
({{in_field.ident.clone().unwrap() | ident:"{}_element"}},
{{in_field.ident.clone().unwrap() | ident:"{}_tag_opt"}}),
}),
_ // Ignore index
)
|
{
// Create output tag
let tag = oxydsp_flowgraph::tag::Tag::merge_tag_opts([
@for (in_field in input_fields.iter())
{
{{in_field.ident.clone().unwrap() | ident:"{}_tag_opt"}},
}
]);
let state = {{ sync_block_make_view_struct(item.clone()) }};
// Compute output sample
@if (output_fields.is_empty())
{
let _
}
@else if (output_fields.len() == 1)
{
let {{output_fields[0].ident.clone().unwrap() | ident:"{}_element"}}
}
@else
{
let (@for (out_field in output_fields.iter())
{
{{out_field.ident.clone().unwrap() | ident:"{}_element"}},
}
)
}
= <Self as oxydsp_flowgraph::block::SyncBlock>::sync_work(state,
@if (input_fields.len() == 1)
{
{{input_fields[0].ident.clone().unwrap() | ident:"{}_element"}},
}
@else
{
(@for (in_field in input_fields.iter())
{
{{in_field.ident.clone().unwrap() | ident:"{}_element"}},
}
)
}
).unwrap();
// Now the output samples must be sent to their resepective outputs
@for (out_field in output_fields.iter())
{
{{ out_field.ident.clone().unwrap() | ident: "{}_writer"}}.push(
(
{{ out_field.ident.clone().unwrap() | ident: "{}_element"}},
tag.clone()
)
);
}
//
}
);
)
}
// Instantiates the view struct
fn sync_block_make_view_struct(item: zyn::syn::ItemStruct) -> zyn::TokenStream
{
let fields = &item.fields.as_named().unwrap().named;
@ -390,3 +238,282 @@ fn sync_block_make_view_struct(item: zyn::syn::ItemStruct) -> zyn::TokenStream
)
.into_token_stream()
}
// Impl Block for syncio
#[zyn::element]
fn sync_block_impl_block(item: zyn::syn::ItemStruct, tagged: bool) -> zyn::TokenStream
{
let item2 = item.clone();
let (impl_generics, type_generics, where_clause) = item2.generics.split_for_impl();
let fields = &item.fields.as_named().unwrap().named;
// Retrieve fields
let input_fields = fields
.iter()
.filter(|f| f.attrs.iter().any(|attr| attr.is("input")))
.cloned()
.collect::<Vec<_>>();
let output_fields = fields
.iter()
.filter(|f| f.attrs.iter().any(|attr| attr.is("output")))
.cloned()
.collect::<Vec<_>>();
zyn::zyn!(
impl {{ impl_generics }} oxydsp_flowgraph::block::Block for {{ item.ident }} {{ type_generics }}
{{ where_clause }}
{
fn work(&mut self) -> oxydsp_flowgraph::block::BlockResult
{
use oxydsp_flowgraph::tag::TagMergable;
// Get writers from outputs
let mut max_len = usize::MAX;
@for (out_field in output_fields.iter())
{
let {{ out_field.ident.clone().unwrap() | ident: "{}_writer"}} = self.{{ out_field.ident }}.write();
}
// Compute max_len
let max_len = *([
usize::MAX,
@for (out_field in output_fields.iter())
{
{{ out_field.ident.clone().unwrap() | ident: "{}_writer"}}.len(),
}
].iter().min().unwrap());
@if (!input_fields.is_empty())
{
@sync_block_block_impl_with_inputs(item = item.clone(), input_fields = input_fields.clone(), output_fields = output_fields.clone(), tagged = *tagged)
}
@else
{
@sync_block_block_impl_without_inputs(item = item.clone(), output_fields = output_fields.clone(), tagged = *tagged)
}
oxydsp_flowgraph::block::BlockResult::Ok
}
}
)
}
// Impl Block for syncio (no inputs)
#[zyn::element]
fn sync_block_block_impl_without_inputs(
item: zyn::syn::ItemStruct,
output_fields: Vec<Field>,
tagged: bool,
) -> zyn::TokenStream
{
zyn::zyn!(
for _ in 0..max_len
{
// Get outputs
let state = {{ sync_block_make_view_struct(item.clone()) }};
let @sync_block_output_descons(output_fields = output_fields.clone(), tagged = *tagged) =
<Self as oxydsp_flowgraph::block::SyncBlock>::sync_work(state, ()).unwrap();
// Now the output samples must be sent to their resepective outputs
@for (out_field in output_fields.iter())
{
@if (*tagged)
{
let _ = {{ out_field.ident.clone().unwrap() | ident: "{}_writer"}}.push(
oxydsp_flowgraph::tag::Tagged(
{{ out_field.ident.clone().unwrap() | ident: "{}_element"}},
{{ out_field.ident.clone().unwrap() | ident: "{}_tag_opt"}},
)
);
} @else
{
let _ = {{ out_field.ident.clone().unwrap() | ident: "{}_writer"}}.push(
oxydsp_flowgraph::tag::Tagged(
{{ out_field.ident.clone().unwrap() | ident: "{}_element"}},
None,
)
);
}
}
}
)
}
// Impl Block for syncio (with inputs)
#[zyn::element]
fn sync_block_block_impl_with_inputs(
item: zyn::syn::ItemStruct,
input_fields: Vec<Field>,
output_fields: Vec<Field>,
tagged: bool,
) -> zyn::TokenStream
{
zyn::zyn!(
use oxydsp_flowgraph::io::PopIterable;
// Iterate on inputs
(
@for (in_field in input_fields.iter())
{
&mut self.{{ in_field.ident }},
}
).pop_iter()
.take(max_len)
.for_each(
// Deconstruct foreach arguments
|
(@for (in_field in input_fields.iter())
{
oxydsp_flowgraph::tag::Tagged({{in_field.ident.clone().unwrap() | ident:"{}_element"}},
{{in_field.ident.clone().unwrap() | ident:"{}_tag_opt"}}),
})
|
{
// Create output tag
let common_tag = oxydsp_flowgraph::tag::Tag::from_tag_opts([
@for (in_field in input_fields.iter())
{
&{{in_field.ident.clone().unwrap() | ident:"{}_tag_opt"}},
}
]);
let state = {{ sync_block_make_view_struct(item.clone()) }};
// Compute output sample
let @sync_block_output_descons(output_fields = output_fields.clone(), tagged = *tagged)
= <Self as oxydsp_flowgraph::block::SyncBlock>::sync_work(state, @sync_block_input_cons(input_fields = input_fields.clone(), tagged = *tagged)).unwrap();
// Now the output samples must be sent to their resepective outputs
@for (out_field in output_fields.iter())
{
@if (*tagged)
{
let _ = {{ out_field.ident.clone().unwrap() | ident: "{}_writer"}}.push(
oxydsp_flowgraph::tag::Tagged(
{{ out_field.ident.clone().unwrap() | ident: "{}_element"}},
{{ out_field.ident.clone().unwrap() | ident: "{}_tag_opt"}}.merge(&common_tag),
)
);
} @else
{
let _ = {{ out_field.ident.clone().unwrap() | ident: "{}_writer"}}.push(
oxydsp_flowgraph::tag::Tagged(
{{ out_field.ident.clone().unwrap() | ident: "{}_element"}},
common_tag,
)
);
}
}
//
}
);
)
}
#[zyn::element]
fn sync_block_output_descons(output_fields: Vec<Field>, tagged: bool) -> zyn::TokenStream
{
#[allow(clippy::collapsible_else_if)]
if *tagged
{
// If tagged : deconstruct tags
if output_fields.is_empty()
{
zyn::zyn!(_)
}
else if output_fields.len() == 1
{
zyn::zyn!(
oxydsp_flowgraph::tag::Tagged({{output_fields[0].ident.clone().unwrap() | ident:"{}_element"}}, {{output_fields[0].ident.clone().unwrap() | ident:"{}_tag_opt"}})
)
}
else
{
zyn::zyn!(
(@for (in_field in output_fields.iter())
{
oxydsp_flowgraph::tag::Tagged({{in_field.ident.clone().unwrap() | ident:"{}_element"}}, {{in_field.ident.clone().unwrap() | ident:"{}_tag_opt"}}.clone()),
}
)
)
}
}
else
{
// Otherwise just get the output element
if output_fields.is_empty()
{
zyn::zyn!(_)
}
else if output_fields.len() == 1
{
zyn::zyn!(
{{output_fields[0].ident.clone().unwrap() | ident:"{}_element"}}
)
}
else
{
zyn::zyn!(
(@for (in_field in output_fields.iter())
{
{{in_field.ident.clone().unwrap() | ident:"{}_element"}},
}
)
)
}
}
}
#[zyn::element]
fn sync_block_input_cons(input_fields: Vec<Field>, tagged: bool) -> zyn::TokenStream
{
#[allow(clippy::collapsible_else_if)]
if *tagged
{
// If tagged : deconstruct tags
if input_fields.is_empty()
{
zyn::zyn!(())
}
else if input_fields.len() == 1
{
zyn::zyn!(
oxydsp_flowgraph::tag::Tagged({{input_fields[0].ident.clone().unwrap() | ident:"{}_element"}}, {{input_fields[0].ident.clone().unwrap() | ident:"{}_tag_opt"}})
)
}
else
{
zyn::zyn!(
(@for (in_field in input_fields.iter())
{
oxydsp_flowgraph::tag::Tagged({{in_field.ident.clone().unwrap() | ident:"{}_element"}}, {{in_field.ident.clone().unwrap() | ident:"{}_tag_opt"}}.clone()),
}
)
)
}
}
else
{
// Otherwise just get the output element
if input_fields.is_empty()
{
zyn::zyn!(_)
}
else if input_fields.len() == 1
{
zyn::zyn!(
{{input_fields[0].ident.clone().unwrap() | ident:"{}_element"}}
)
}
else
{
zyn::zyn!(
(@for (in_field in input_fields.iter())
{
{{in_field.ident.clone().unwrap() | ident:"{}_element"}},
}
)
)
}
}
}

250
oxydsp-flowgraph/src/block.rs
View File

@ -1,6 +1,8 @@
use crate::edge::BlockIOIndex;
use crate::io::AnonymousStreamConsumer;
use crate::io::AnonymousStreamProducer;
use crate::io::AnonymousIn;
use crate::io::AnonymousOut;
use crate::io::In;
use crate::io::Out;
use crate::io::edge::BlockIOIndex;
pub enum BlockResult
{
@ -9,32 +11,66 @@ pub enum BlockResult
// Signifies that the block finished its work
// Running it again would be useless
// This triggers the graph shutdown
Terminated,
// Kill graph
Exit,
}
pub trait BlockInput
{
fn get_inputs_mut(&mut self) -> Vec<&mut dyn AnonymousIn>;
fn get_inputs(&self) -> Vec<&dyn AnonymousIn>;
// Meta information
fn get_types_names(&self) -> Vec<&'static str>;
}
pub trait BlockOutput
{
fn get_outputs_mut(&mut self) -> Vec<&mut dyn AnonymousOut>;
fn get_outputs(&self) -> Vec<&dyn AnonymousOut>;
// Meta information
fn get_types_names(&self) -> Vec<&'static str>;
}
pub trait BlockIO
{
fn get_inputs_mut(&mut self) -> Vec<&mut dyn AnonymousIn>;
fn get_outputs_mut(&mut self) -> Vec<&mut dyn AnonymousOut>;
fn get_inputs(&self) -> Vec<&dyn AnonymousIn>;
fn get_outputs(&self) -> Vec<&dyn AnonymousOut>;
fn get_successors(&self) -> Vec<BlockIOIndex>
{
self.get_outputs()
.iter()
.map(|x| x.get_consumer_block().unwrap())
.collect()
}
// Get all of the BlockIOIndices (block index + port) that
// this blocks can send data to.
fn get_successors(&self) -> Vec<BlockIOIndex>;
// Sets the index of the current blocks on the shared edges
fn set_index(&self, block_index: usize);
// Number of input/output ports
fn input_count(&self) -> usize;
fn output_count(&self) -> usize;
// Stream managment
fn set_anonymous_out_stream(&mut self, output_index: usize, producer: AnonymousStreamProducer);
fn set_anonymous_in_stream(&mut self, input_index: usize, consumer: AnonymousStreamConsumer);
fn create_anonymous_stream_for(
&mut self,
output_index: usize,
capacity: usize,
) -> (AnonymousStreamProducer, AnonymousStreamConsumer);
// fn get_successors(&self) -> Vec<BlockIOIndex>;
//
// // Sets the index of the current blocks on the shared edges
// fn set_index(&self, block_index: usize);
//
// // Number of input/output ports
// fn input_count(&self) -> usize;
// fn output_count(&self) -> usize;
//
// // Stream managment
// fn set_anonymous_out_stream(&mut self, output_index: usize, producer: AnonymousStreamProducer);
// fn set_anonymous_in_stream(&mut self, input_index: usize, consumer: AnonymousStreamConsumer);
//
// fn create_anonymous_stream_for(
// &mut self,
// output_index: usize,
// capacity: usize,
// ) -> (AnonymousStreamProducer, AnonymousStreamConsumer);
// Meta information
fn get_block_name(&self) -> &'static str;
@ -65,3 +101,173 @@ pub trait SyncBlock<'view>: SyncBlockIO<'view>
pub trait GraphableBlock: Block + BlockIO {}
impl<T> GraphableBlock for T where T: Block + BlockIO {}
impl<T: 'static> BlockInput for In<T>
{
fn get_inputs_mut(&mut self) -> Vec<&mut dyn AnonymousIn>
{
vec![self]
}
fn get_inputs(&self) -> Vec<&dyn AnonymousIn>
{
vec![self]
}
fn get_types_names(&self) -> Vec<&'static str>
{
vec![std::any::type_name::<T>()]
}
}
impl<I: BlockInput> BlockInput for Option<I>
{
fn get_inputs_mut(&mut self) -> Vec<&mut dyn AnonymousIn>
{
if let Some(input) = self
{
input.get_inputs_mut()
}
else
{
vec![]
}
}
fn get_inputs(&self) -> Vec<&dyn AnonymousIn>
{
if let Some(input) = self
{
input.get_inputs()
}
else
{
vec![]
}
}
fn get_types_names(&self) -> Vec<&'static str>
{
if let Some(input) = self
{
input.get_types_names()
}
else
{
vec![]
}
}
}
impl<I: BlockInput, const N: usize> BlockInput for [I; N]
{
fn get_inputs(&self) -> Vec<&dyn AnonymousIn>
{
let mut output = vec![];
for input in self
{
output.extend(input.get_inputs());
}
output
}
fn get_inputs_mut(&mut self) -> Vec<&mut dyn AnonymousIn>
{
let mut output = vec![];
for input in self
{
output.extend(input.get_inputs_mut());
}
output
}
fn get_types_names(&self) -> Vec<&'static str>
{
vec![std::any::type_name::<I>(); N]
}
}
impl<T: 'static> BlockOutput for Out<T>
{
fn get_outputs_mut(&mut self) -> Vec<&mut dyn AnonymousOut>
{
vec![self]
}
fn get_outputs(&self) -> Vec<&dyn AnonymousOut>
{
vec![self]
}
fn get_types_names(&self) -> Vec<&'static str>
{
vec![std::any::type_name::<T>()]
}
}
impl<I: BlockOutput> BlockOutput for Option<I>
{
fn get_outputs_mut(&mut self) -> Vec<&mut dyn AnonymousOut>
{
if let Some(output) = self
{
output.get_outputs_mut()
}
else
{
vec![]
}
}
fn get_outputs(&self) -> Vec<&dyn AnonymousOut>
{
if let Some(output) = self
{
output.get_outputs()
}
else
{
vec![]
}
}
fn get_types_names(&self) -> Vec<&'static str>
{
if let Some(input) = self
{
input.get_types_names()
}
else
{
vec![]
}
}
}
impl<I: BlockOutput, const N: usize> BlockOutput for [I; N]
{
fn get_outputs_mut(&mut self) -> Vec<&mut dyn AnonymousOut>
{
let mut result = vec![];
for output in self
{
result.extend(output.get_outputs_mut());
}
result
}
fn get_outputs(&self) -> Vec<&dyn AnonymousOut>
{
let mut result = vec![];
for output in self
{
result.extend(output.get_outputs());
}
result
}
fn get_types_names(&self) -> Vec<&'static str>
{
vec![std::any::type_name::<I>(); N]
}
}

20
oxydsp-flowgraph/src/edge.rs
View File

@ -1,20 +0,0 @@
use std::any::Any;
#[derive(Default)]
pub struct Edge
{
// Represents the index of the block owning the Out end in the graph
// And the the output index within that block
pub from: Option<BlockIOIndex>,
// Represents the index of the block owning the In end in the graph
// And the the input index within that block
pub to: Option<BlockIOIndex>,
}
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub struct BlockIOIndex
{
pub block_index: usize,
pub port_index: usize,
}

187
oxydsp-flowgraph/src/graph.rs
View File

@ -1,6 +1,13 @@
use std::sync::Arc;
use std::sync::atomic::AtomicBool;
use std::thread::JoinHandle;
use crossbeam_deque::Steal;
use crossbeam_deque::Worker;
use crate::block;
use crate::block::GraphableBlock;
use crate::io::edge::BlockIOIndex;
#[macro_export]
macro_rules! flowgraph
@ -8,7 +15,7 @@ macro_rules! flowgraph
($($x:ident),* $(,)?) =>
{
{
let mut flowgraph = FlowGraph::new();
let mut flowgraph = oxydsp_flowgraph::graph::FlowGraph::new();
$(
flowgraph.add_block($x);
)*
@ -17,6 +24,21 @@ macro_rules! flowgraph
}
}
pub struct RunningGraph
{
worker_handles: Vec<JoinHandle<()>>,
}
impl RunningGraph
{
pub fn join(self)
{
self.worker_handles.into_iter().for_each(|j| {
let _ = j.join();
});
}
}
pub struct FlowGraph
{
blocks: Vec<Box<dyn GraphableBlock + Send + 'static>>,
@ -31,52 +53,157 @@ impl FlowGraph
pub fn add_block<T: GraphableBlock + Send + 'static>(&mut self, block: T)
{
block.set_index(self.blocks.len());
block.get_inputs().iter().enumerate().for_each(|(i, x)| {
x.set_index(BlockIOIndex {
block_index: self.blocks.len(),
port_index: i,
})
});
block.get_outputs().iter().enumerate().for_each(|(i, x)| {
x.set_index(BlockIOIndex {
block_index: self.blocks.len(),
port_index: i,
})
});
self.blocks.push(Box::new(block));
}
pub fn run(mut self) -> JoinHandle<()>
// pub fn run(mut self, thread_count: usize) -> RunningGraph
// {
// self.populate_edges();
//
// let mut worker_queues = (0..thread_count).map(|_| vec![]).collect::<Vec<_>>();
//
// for (i, block) in self.blocks.into_iter().enumerate()
// {
// worker_queues[i % thread_count].push(block);
// }
//
// let running = Arc::new(AtomicBool::new(true));
// let worker_handles = worker_queues
// .into_iter()
// .map(|mut queue| {
// let running = running.clone();
// std::thread::spawn(move || {
// 'outer: while running.load(std::sync::atomic::Ordering::Relaxed)
// {
// for block in queue.iter_mut()
// {
// match block.work()
// {
// crate::block::BlockResult::Ok =>
// {
// // Reschedule block
// }
// crate::block::BlockResult::Terminated =>
// { // DROP BLOCK
// }
// crate::block::BlockResult::Exit =>
// {
// println!("KILLING GRAPH");
// break 'outer;
// }
// }
// }
// }
// running.store(false, std::sync::atomic::Ordering::Relaxed);
// })
// })
// .collect::<Vec<_>>();
// RunningGraph { worker_handles }
// }
pub fn run(mut self, thread_count: usize) -> RunningGraph
{
self.populate_edges();
std::thread::spawn(move || {
'outer: loop
{
for x in self.blocks.iter_mut()
{
match x.work()
let worker_queues = (0..thread_count)
.map(|_| Worker::<Box<dyn GraphableBlock + Send + 'static>>::new_fifo())
.collect::<Vec<_>>();
worker_queues
.iter()
.cycle()
.zip(self.blocks)
.for_each(|(worker, block)| worker.push(block));
let stealers = worker_queues
.iter()
.map(|x| x.stealer())
.collect::<Vec<_>>();
let running = Arc::new(AtomicBool::new(true));
let worker_handles = worker_queues
.into_iter()
.map(|queue| {
let stealers = stealers.clone();
let running = running.clone();
std::thread::spawn(move || {
'outer: while running.load(std::sync::atomic::Ordering::Relaxed)
{
crate::block::BlockResult::Ok =>
{}
crate::block::BlockResult::Terminated =>
// Try to get a job
let mut block = queue.pop().unwrap_or_else(|| {
std::iter::repeat_with(|| {
stealers
.iter()
.map(|stealer| stealer.steal_batch_and_pop(&queue))
.collect::<Steal<_>>()
.success()
})
.find(|x| x.is_some())
.unwrap()
.unwrap()
});
match block.work()
{
break 'outer;
crate::block::BlockResult::Ok =>
{
// Reschedule block
queue.push(block);
}
crate::block::BlockResult::Terminated =>
{ // DROP BLOCK
}
crate::block::BlockResult::Exit =>
{
println!("KILLING GRAPH");
break 'outer;
}
}
}
}
}
for _ in 0..10_000
{
for x in self.blocks.iter_mut()
{
x.work();
}
}
})
running.store(false, std::sync::atomic::Ordering::Relaxed);
})
})
.collect::<Vec<_>>();
RunningGraph { worker_handles }
}
fn populate_edges(&mut self)
{
for block_index in 0..self.blocks.len()
{
let successors = self.blocks[block_index].get_successors();
for (output_index, succ_id) in successors.iter().enumerate()
let outputs = self.blocks[block_index].get_outputs_mut();
let mut rxs = vec![];
for output in outputs.into_iter()
{
let (tx, rx) =
self.blocks[block_index].create_anonymous_stream_for(output_index, 4096);
self.blocks[block_index].set_anonymous_out_stream(output_index, tx);
self.blocks[succ_id.block_index].set_anonymous_in_stream(succ_id.port_index, rx);
//let (tx, rx) = output.create_anonymous_stream(4096);
let (tx, rx) = output.create_anonymous_stream(8192);
//let (tx, rx) = output.create_anonymous_stream(65536);
output.set_anonymous_stream(tx);
rxs.push((
output
.get_consumer_block()
.expect("Non existent destination block."),
rx,
))
}
for (index, rx) in rxs.into_iter()
{
self.blocks[index.block_index].get_inputs_mut()[index.port_index]
.set_anonymous_stream(rx);
}
}
}

289
oxydsp-flowgraph/src/io.rs
View File

@ -5,46 +5,152 @@ use std::sync::Mutex;
use oxydsp_flowgraph_macros::generate_pop_iterable_tuple_impl;
use oxydsp_flowgraph_macros::impl_iterator_for_pop_iter_tuple;
use crate::edge::BlockIOIndex;
use crate::edge::Edge;
use crate::stream::StreamConsumer;
use crate::stream::StreamProducer;
use crate::stream::StreamReader;
use crate::stream::StreamWriter;
use crate::stream::{self};
use crate::tag::Tag;
use crate::tag::TagSlot;
use crate::tag::Tagged;
pub mod edge;
use crate::io::edge::BlockIOIndex;
use crate::io::edge::Edge;
/// Represents a input port for a block
pub struct In<T>
{
stream: Option<StreamConsumer<T>>,
tag_stream: Option<StreamConsumer<Tag>>,
tag_stream: Option<StreamConsumer<TagSlot>>,
// Will rarely be accessed
edge: Arc<Mutex<Edge>>,
}
/// Represents a output port for a block
pub struct Out<T>
{
stream: Option<StreamProducer<T>>,
tag_stream: Option<StreamProducer<Tag>>,
tag_stream: Option<StreamProducer<TagSlot>>,
// Will rarely be accessed
edge: Arc<Mutex<Edge>>,
}
/// Trait to manipulate a block's input in a type agnostic/erased way
pub trait AnonymousIn
{
/// Inform the input about the index of the blocks it's in, as well as its port index
fn set_index(&self, index: BlockIOIndex);
/// Returns None or the block index of the block, and the block port of the corresponding
/// Out object
fn get_producer_block(&self) -> Option<BlockIOIndex>;
/// Sets the internal stream object
fn set_anonymous_stream(&mut self, consumer: AnonymousStreamConsumer);
}
/// Trait to manipulate a block's output in a type agnostic/erased way
pub trait AnonymousOut
{
/// Inform the output about the index of the blocks it's in, as well as its port index
fn set_index(&self, index: BlockIOIndex);
/// Sets the internal stream object
fn set_anonymous_stream(&mut self, producer: AnonymousStreamProducer);
/// Returns None or the block index of the block, and the block port of the corresponding
/// In object
fn get_consumer_block(&self) -> Option<BlockIOIndex>;
/// Creates the stream with the correct corresponding type, in a type erased way.
///
/// This delegation of stream creation is necessary to allow the graph to manipulate
/// it, as it cannot know about the generic type of the stream.
fn create_anonymous_stream(
&self,
capacity: usize,
) -> (AnonymousStreamProducer, AnonymousStreamConsumer);
}
impl<T: 'static> AnonymousIn for In<T>
{
fn set_index(&self, index: BlockIOIndex)
{
self.edge.lock().unwrap().to = Some(index);
}
fn get_producer_block(&self) -> Option<BlockIOIndex>
{
self.edge.lock().unwrap().from
}
fn set_anonymous_stream(&mut self, consumer: AnonymousStreamConsumer)
{
let (stream, tag_stream) = consumer.downcast::<T>();
self.stream = Some(stream);
self.tag_stream = Some(tag_stream);
}
}
impl<T: 'static> AnonymousOut for Out<T>
{
fn set_index(&self, index: BlockIOIndex)
{
self.edge.lock().unwrap().from = Some(index);
}
fn get_consumer_block(&self) -> Option<BlockIOIndex>
{
self.edge.lock().unwrap().to
}
fn set_anonymous_stream(&mut self, producer: AnonymousStreamProducer)
{
let (stream, tag_stream) = producer.downcast::<T>();
self.stream = Some(stream);
self.tag_stream = Some(tag_stream);
}
// Delegate stream creation to Out object
// which knows the stream type
fn create_anonymous_stream(
&self,
capacity: usize,
) -> (AnonymousStreamProducer, AnonymousStreamConsumer)
{
let (tx, rx) = stream::bounded_queue::<T>(capacity);
let (tx_tag, rx_tag) = stream::bounded_queue::<TagSlot>(capacity);
((tx, tx_tag).into(), (rx, rx_tag).into())
}
}
/// A Reader to get data from an input
pub struct InReader<'a, T>
{
data_reader: StreamReader<'a, T>,
tag_reader: StreamReader<'a, Tag>,
tag_reader: StreamReader<'a, TagSlot>,
}
/// A writer to send data to an output
pub struct OutWriter<'a, T>
{
data_writer: StreamWriter<'a, T>,
tag_writer: StreamWriter<'a, Tag>,
tag_writer: StreamWriter<'a, TagSlot>,
}
/// Creates a stream that can then be used to link blocks
///
/// ```rust
/// let (output, input) = oxydsp-flowgraph::io::stream();
///
/// let writer = output.write();
/// let reader = input.read();
///
/// // ...
/// ```
pub fn stream<T>() -> (Out<T>, In<T>)
{
let edge = Arc::new(Mutex::new(Edge::default()));
@ -64,23 +170,12 @@ pub fn stream<T>() -> (Out<T>, In<T>)
impl<T: 'static> In<T>
{
pub fn set_block_index(&self, index: BlockIOIndex)
{
self.edge.lock().unwrap().to = Some(index);
}
pub fn get_producer_block(&self) -> Option<BlockIOIndex>
{
self.edge.lock().unwrap().from
}
pub fn set_anonymous_stream(&mut self, consumer: AnonymousStreamConsumer)
{
let (stream, tag_stream) = consumer.downcast::<T>();
self.stream = Some(stream);
self.tag_stream = Some(tag_stream);
}
/// Gets a reader view from an input.
///
/// ```
/// let reader = input.read();
/// let data = reader.pop();
/// ```
pub fn read<'a>(&'a mut self) -> InReader<'a, T>
{
let data_reader = self.stream.as_mut().unwrap().read();
@ -94,35 +189,12 @@ impl<T: 'static> In<T>
impl<T: 'static> Out<T>
{
pub fn set_block_index(&self, index: BlockIOIndex)
{
self.edge.lock().unwrap().from = Some(index);
}
pub fn get_consumer_block(&self) -> Option<BlockIOIndex>
{
self.edge.lock().unwrap().to
}
pub fn set_anonymous_stream(&mut self, producer: AnonymousStreamProducer)
{
let (stream, tag_stream) = producer.downcast::<T>();
self.stream = Some(stream);
self.tag_stream = Some(tag_stream);
}
// Delegate stream creation to Out object
// which knows the stream type
pub fn create_anonymous_stream(
&self,
capacity: usize,
) -> (AnonymousStreamProducer, AnonymousStreamConsumer)
{
let (tx, rx) = stream::bounded_queue::<T>(capacity);
let (tx_tag, rx_tag) = stream::bounded_queue::<Tag>(capacity);
((tx, tx_tag).into(), (rx, rx_tag).into())
}
/// Gets a reader view from an output.
///
/// ```
/// let writer = output.write();
/// writer.push((data, tag).into());
/// ```
pub fn write<'a>(&'a mut self) -> OutWriter<'a, T>
{
OutWriter {
@ -131,7 +203,18 @@ impl<T: 'static> Out<T>
}
}
pub fn push_iter<I: Iterator<Item = (T, Option<Tag>)>>(&mut self, mut iter: I) -> bool
/// Pushes an iterator to the output, sending the maximum amount of elements
/// to the output.
///
/// It will not consume the iterator more than what can be sent.
///
/// ```
/// let writer = output.write();
///
/// // Send only 42s to the output
/// writer.push_iter(std::iter::repeat(42));
/// ```
pub fn push_iter<I: Iterator<Item = Tagged<T>>>(&mut self, mut iter: I) -> bool
{
let writer = self.write();
let len = writer.len();
@ -140,17 +223,7 @@ impl<T: 'static> Out<T>
{
if let Some(elt) = iter.next()
{
match elt.1
{
Some(tag) =>
{
let _ = writer.push_tagged(elt.0, tag);
}
None =>
{
let _ = writer.push_no_tag(elt.0);
}
}
let _ = writer.push(elt);
}
else
{
@ -160,7 +233,8 @@ impl<T: 'static> Out<T>
true
}
// Meta information
/// Meta information
/// Returns a string of the type of the output
pub fn get_type_name(&self) -> &'static str
{
std::any::type_name::<T>()
@ -169,11 +243,22 @@ impl<T: 'static> Out<T>
impl<T> InReader<'_, T>
{
/// Gets the amount of elements that are available
/// on the input.
pub fn len(&self) -> usize
{
self.data_reader.len()
}
/// Returns true iif no elements are available on the input.
pub fn is_empty(&self) -> bool
{
self.len() == 0
}
/// Pops an element from the input.
/// It is guaranteed to return `Some(data)` if
/// if pop was called strictly less times than len
pub fn pop(&self) -> Option<Tagged<T>>
{
let data = self.data_reader.pop_with_index();
@ -187,7 +272,7 @@ impl<T> InReader<'_, T>
{
tag = self.tag_reader.pop();
}
Some((data, tag).into())
Some((data, tag.map(|t| t.tag)).into())
}
else
{
@ -195,6 +280,9 @@ impl<T> InReader<'_, T>
}
}
/// Pops an element from the input, discarding the tag.
/// It is guaranteed to return `Some(data)` if
/// if pop was called strictly less times than len
pub fn pop_untag(&self) -> Option<T>
{
self.pop().map(|data| data.into_inner())
@ -203,14 +291,28 @@ impl<T> InReader<'_, T>
impl<T> OutWriter<'_, T>
{
/// Gets how much room is available on the output
pub fn len(&self) -> usize
{
self.data_writer.len().min(self.tag_writer.len())
}
pub fn push(&self, data: Tagged<T>) -> Result<(), (T, Option<Tag>)>
/// Returns true iif no element can be sent
pub fn is_empty(&self) -> bool
{
self.len() == 0
}
/// Pushes some tagged data on the input.
///
/// The operation succeeds (`Ok(())`) if there is enough room
/// Or fails returning the given data to the caller.
pub fn push(&self, data: Tagged<T>) -> Result<(), Tagged<T>>
{
let (data, tag) = data.into();
let position = self.data_writer.next_index();
let tag = tag.map(|t| TagSlot { position, tag: t });
match self.data_writer.push(data)
{
Ok(_) if tag.is_some() =>
@ -219,16 +321,21 @@ impl<T> OutWriter<'_, T>
Ok(())
}
Ok(_) => Ok(()),
Err(data) => Err((data, tag)),
Err(data) => Err((data, tag.map(|t| t.tag)).into()),
}
}
/// Pushes some data on the input (not tagged).
///
/// The operation succeeds (`Ok(())`) if there is enough room
/// Or fails returning the given data to the caller.
pub fn push_no_tag(&self, data: T) -> Result<(), T>
{
self.data_writer.push(data.into())
self.data_writer.push(data)
}
}
/// An iterator type to push data to output(s)
pub struct PopIter<T>
{
len: usize,
@ -236,9 +343,16 @@ pub struct PopIter<T>
reader: T,
}
/// Type on which data can be popped from
pub trait PopIterable<'a>
{
type Output;
/// Returns an iterator on the input elements :
///
/// ```
/// (&mut input_a, &mut input_b, &mut input_c).pop_iter().for_each(|(a, b, c)| println!("Got {a}, {b} and {c} !"));
/// ```
fn pop_iter(&'a mut self) -> PopIter<Self::Output>;
}
@ -292,23 +406,31 @@ impl_iterator_for_pop_iter_tuple! {10}
impl_iterator_for_pop_iter_tuple! {11}
impl_iterator_for_pop_iter_tuple! {12}
// Needed for graph to be able to manipulate
// stream endings without knowing the generic type
/// StreamProducer object for data and tags stored in a type
/// agnostic/erased way.
///
/// This is needed for the graph system to manipulate and pass arround these objects
/// as they can't/don't know about the generic types of the stream objects
pub struct AnonymousStreamProducer
{
inner: Box<dyn Any>,
inner_tag: StreamProducer<Tag>,
inner_tag: StreamProducer<TagSlot>,
}
/// StreamConsumer object for data and tags stored in a type
/// agnostic/erased way.
///
/// This is needed for the graph system to manipulate and pass arround these objects
/// as they can't/don't know about the generic types of the stream objects
pub struct AnonymousStreamConsumer
{
inner: Box<dyn Any>,
inner_tag: StreamConsumer<Tag>,
inner_tag: StreamConsumer<TagSlot>,
}
impl<T: 'static> From<(StreamProducer<T>, StreamProducer<Tag>)> for AnonymousStreamProducer
impl<T: 'static> From<(StreamProducer<T>, StreamProducer<TagSlot>)> for AnonymousStreamProducer
{
fn from(value: (StreamProducer<T>, StreamProducer<Tag>)) -> Self
fn from(value: (StreamProducer<T>, StreamProducer<TagSlot>)) -> Self
{
AnonymousStreamProducer {
inner: Box::new(value.0),
@ -317,9 +439,9 @@ impl<T: 'static> From<(StreamProducer<T>, StreamProducer<Tag>)> for AnonymousStr
}
}
impl<T: 'static> From<(StreamConsumer<T>, StreamConsumer<Tag>)> for AnonymousStreamConsumer
impl<T: 'static> From<(StreamConsumer<T>, StreamConsumer<TagSlot>)> for AnonymousStreamConsumer
{
fn from(value: (StreamConsumer<T>, StreamConsumer<Tag>)) -> Self
fn from(value: (StreamConsumer<T>, StreamConsumer<TagSlot>)) -> Self
{
AnonymousStreamConsumer {
inner: Box::new(value.0),
@ -330,7 +452,7 @@ impl<T: 'static> From<(StreamConsumer<T>, StreamConsumer<Tag>)> for AnonymousStr
impl AnonymousStreamProducer
{
pub fn downcast<T: 'static>(self) -> (StreamProducer<T>, StreamProducer<Tag>)
pub(crate) fn downcast<T: 'static>(self) -> (StreamProducer<T>, StreamProducer<TagSlot>)
{
(
*self.inner.downcast::<StreamProducer<T>>().unwrap(),
@ -341,7 +463,7 @@ impl AnonymousStreamProducer
impl AnonymousStreamConsumer
{
pub fn downcast<T: 'static>(self) -> (StreamConsumer<T>, StreamConsumer<Tag>)
pub(crate) fn downcast<T: 'static>(self) -> (StreamConsumer<T>, StreamConsumer<TagSlot>)
{
(
*self.inner.downcast::<StreamConsumer<T>>().unwrap(),
@ -349,10 +471,3 @@ impl AnonymousStreamConsumer
)
}
}
// pub trait PushIterable<'a, T, I>
// where
// I: Iterator<Item = T>,
// {
// fn push_iter(&'a mut self, iter: I) -> bool;
// }

23
oxydsp-flowgraph/src/io/edge.rs Normal file
View File

@ -0,0 +1,23 @@
/// Shared object between a block's input and output objects
/// so they can "communicate" and know about each other
#[derive(Default)]
pub struct Edge
{
/// Represents the index of the block owning the Out end in the graph
/// And the the output index within that block
pub from: Option<BlockIOIndex>,
/// Represents the index of the block owning the In end in the graph
/// And the the input index within that block
pub to: Option<BlockIOIndex>,
}
/// Reprensents the location of a port (input or output) in terms of
/// - The block index in which they exist
/// - Their input or output index within that block
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub struct BlockIOIndex
{
pub block_index: usize,
pub port_index: usize,
}

9
oxydsp-flowgraph/src/lib.rs
View File

@ -1,10 +1,9 @@
// This crate manages the flowgraph datastructures and execution/scheduling
// as well as the communication between the blocks
/// This crate manages the flowgraph datastructures and execution/scheduling
/// as well as the communication between the blocks
pub mod block;
pub mod edge;
pub mod graph;
pub mod io;
pub mod stream;
pub mod tag;
pub use oxydsp_flowgraph_macros::{BlockIO, sync_block};
pub use oxydsp_flowgraph_macros::BlockIO;
pub use oxydsp_flowgraph_macros::sync_block;

1
oxydsp-flowgraph/src/main.rs
View File

@ -1 +0,0 @@
fn main() {}

55
oxydsp-flowgraph/src/stream.rs
View File

@ -1,6 +1,5 @@
use std::cell::Cell;
use std::cell::UnsafeCell;
use std::io::empty;
use std::mem::MaybeUninit;
use std::ops::Deref;
use std::sync::Arc;
@ -550,6 +549,28 @@ impl<'a, T> StreamWriter<'a, T>
Err(element)
}
}
pub fn write(&self, length: usize)
{
let new = self.written.get() + length;
assert!(new < self.len());
self.written.set(new);
}
}
impl<'a, T: Copy> StreamWriter<'a, T>
{
pub fn slices_mut(&mut self) -> (&mut [MaybeUninit<T>], &mut [MaybeUninit<T>])
{
unsafe {
(
&mut *self.first.get(),
self.second
.map(|x| &mut *x.get())
.unwrap_or_else(|| &mut(&mut *self.first.get())[0..0]),
)
}
}
}
impl<'a, T> StreamReader<'a, T>
@ -643,6 +664,30 @@ impl<'a, T> StreamReader<'a, T>
None
}
}
pub fn read(&self, length: usize)
{
let new = self.read.get() + length;
assert!(new < self.len());
self.read.set(new);
}
}
impl<'a, T: Copy> StreamReader<'a, T>
{
pub fn slices(&self) -> (&[T], &[T])
{
unsafe {
(
std::mem::transmute::<&[MaybeUninit<T>], &[T]>(&*self.first.get()),
std::mem::transmute::<&[MaybeUninit<T>], &[T]>(
self.second
.map(|x| &*x.get())
.unwrap_or_else(|| &(&*self.first.get())[0..0]),
),
)
}
}
}
// When a Stream writer goes out of scope, it wrote
@ -653,13 +698,13 @@ impl<'a, T> Drop for StreamWriter<'a, T>
{
// Advance head.
// We know that this value hasn't changed since this StreamWriter was created
let head = self.producer.inner.head.load(Ordering::Relaxed);
// let head = self.producer.inner.head.load(Ordering::Relaxed);
// We want writes to the buffer to be visible when acquired in the pop side
self.producer
.inner
.head
.store(head + self.written.get(), Ordering::Release);
.store(self.start_index + self.written.get(), Ordering::Release);
}
}
@ -671,13 +716,13 @@ impl<'a, T> Drop for StreamReader<'a, T>
{
// Advance tail.
// We know that this value hasn't changed since this StreamWriter was created
let tail = self.producer.inner.tail.load(Ordering::Relaxed);
// let tail = self.producer.inner.tail.load(Ordering::Relaxed);
// We want writes to the buffer to be visible when acquired in the push side
self.producer
.inner
.tail
.store(tail + self.read.get(), Ordering::Release);
.store(self.start_index + self.read.get(), Ordering::Release);
}
}

271
oxydsp-flowgraph/src/tag.rs
View File

@ -1,13 +1,91 @@
/// A tag is an amount of data you can "attach" to a particular sample in stream.
/// Indeed you might need to mark sample, or bring information along with them sparsely :
/// Tags are often a rare occurence.
///
/// Example :
///
/// Timing error detection : A sample is the center of a symbol
/// There might be a Tag :
///
/// ted_symbol_center: 0.011 (Here the number might represent a error value)
///
/// But really, any kind of data could be referenced by a tag :
/// A float, A string like a json structure, or even a binary blob.
///
/// A tag is formed that way :
///
/// The TagKey :
/// | A unique key allocated at the begining,
/// | Which is tied to a human readable label configured
/// | ahead of runtime.
/// |
/// | And a type, which is used to constrain the type that the tag
/// | contains, to keep downcasting safe and less error prone.
///
/// The TagData :
/// | Then, when it is time to tag sa sample, a block uses that tag key
/// | to add a tag on a sample bundling the tag key, and the sepcific data.
///
///
/// Another block downstream could then check if a sample has been tagged with something
/// of interest with the tag key.
/// If so, the block can then retrieve the data on the tag.
///
/// Each sample can have multiple tags attached to it.
///
/// TagKey using a usize backed identifier is used instead of the more
/// classic way of using String-Value pairs to allow easier and faster
/// Comparisons, as well as much tighter and cleaner managment of tags
/// throughout the graph.
///
///
///
use std::any::Any;
use std::collections::HashMap;
use std::marker::PhantomData;
use std::ops::Deref;
use std::ops::DerefMut;
use std::sync::Arc;
use std::sync::Mutex;
use std::sync::RwLock;
// Tags a particular sample within a specific stream
/// Object to allocate tags and give a unique identifier per tag
struct TagAllocator
{
// Counter to uniquely identify allocated tags
counter: usize,
// Keeps readable tag type and label(s) for the tags
labels: HashMap<usize, (&'static str, TagLabel)>,
}
/// Label for a tag like : "symbol", "packet_start", "error"
struct TagLabel
{
// TODO: Allow user customization of labels
// maybe multiple labels
_label: String,
}
/// Object from which TagKeys are obtained. This guarantees absence of collisions between tags
pub struct Tags
{
allocator: Arc<RwLock<TagAllocator>>,
}
/// Used to anotate tags entries and retrieve them
#[derive(Clone)]
pub struct Tag
pub struct TagKey<T>
{
key: usize,
// Maybe used later to retrieve labels for example
_owner: Arc<RwLock<TagAllocator>>,
_phantom: PhantomData<T>,
}
/// Tags a particular sample within a specific stream
#[derive(Clone)]
pub(crate) struct TagSlot
{
// Position of the sample this tag is tied to.
// The position is in terms of the stream front index when the
@ -17,19 +95,152 @@ pub struct Tag
// TODO: Make it such that when a tag is duplicated, the data seems to be too:
// When adding on a duplicate, it should not replicate on others, but without
// requiring a deep copy.
pub data: Arc<Mutex<HashMap<String, Arc<dyn Any + Send + Sync>>>>,
pub tag: Tag,
}
/// A Tag object containing TagKey-value pairs
#[derive(Clone)]
pub struct Tag
{
data: Arc<RwLock<HashMap<usize, Arc<dyn Any + Send + Sync + 'static>>>>,
}
impl Tags
{
/// Creates a new tag allocator
pub fn new() -> Self
{
Self {
allocator: Arc::new(RwLock::new(TagAllocator {
counter: 0,
labels: HashMap::default(),
})),
}
}
/// Allocates a new unique tag key
pub fn allocate_tag<T>(&mut self, label: impl AsRef<str>) -> TagKey<T>
{
let k = self.allocator.write().unwrap().allocate_tag::<T>(label);
TagKey {
key: k,
_owner: self.allocator.clone(),
_phantom: Default::default(),
}
}
}
impl TagAllocator
{
/// Allocates a new unique tag key
pub fn allocate_tag<T>(&mut self, label: impl AsRef<str>) -> usize
{
let key = self.counter;
self.labels.insert(
self.counter,
(
std::any::type_name::<T>(),
TagLabel {
_label: label.as_ref().to_owned(),
},
),
);
self.counter += 1;
key
}
}
impl Default for Tags
{
/// Creates a new tag allocator
fn default() -> Self
{
Self::new()
}
}
impl Tag
{
pub fn merge_tag_opts<const N: usize>(tag_opts: [Option<Tag>; N]) -> Option<Tag>
/// Creates a new empty tag
pub fn new() -> Self
{
let mut out_tag = None;
for tag in tag_opts.iter()
{
out_tag = out_tag.merge(tag);
Self {
data: Default::default(),
}
out_tag
}
/// Creates a new tag with a (key, value) entry
pub fn with_entry<T: 'static + Send + Sync>(key: TagKey<T>, value: T) -> Self
{
let new_tag = Self::default();
new_tag.add_entry(key, value);
new_tag
}
/// Creates a new tag, which is the combination of the given tags
pub fn from_tags<const N: usize>(tag_opts: [&Tag; N]) -> Tag
{
let new_tag = Self::default();
{
let mut writer = new_tag.data.write().unwrap();
for tag in tag_opts.iter()
{
let reader = tag.data.read().unwrap();
writer.extend(reader.iter().map(|x| (*x.0, x.1.clone())));
}
}
new_tag
}
/// Creates a new tag option, which is the combination of the given tag options
///
/// If all the tag options are None, None is returned
/// Otherwise it is Some of the combination of all of the tags which are Some
pub fn from_tag_opts<const N: usize>(tag_opts: [&Option<Tag>; N]) -> Option<Tag>
{
if tag_opts.iter().all(|t| t.is_none())
{
return None;
}
let new_tag = Self::default();
{
let mut writer = new_tag.data.write().unwrap();
for tag in tag_opts.iter().filter(|t| t.is_some())
{
let reader = tag.as_ref().unwrap().data.read().unwrap();
writer.extend(reader.iter().map(|x| (*x.0, x.1.clone())));
}
}
Some(new_tag)
}
/// Adds a new entry in the tag. If it already exists, it is overwritten
pub fn add_entry<T: 'static + Send + Sync>(&self, key: TagKey<T>, value: T)
{
self.data.write().unwrap().insert(key.key, Arc::new(value));
}
/// Retrieves an entry in tag. If ther is no such entry corresponding to the key,
/// retruns None
pub fn retrieve<T: 'static + Send + Sync>(&self, key: &TagKey<T>) -> Option<Arc<T>>
{
let element = self.data.read().unwrap().get(&key.key).cloned();
// TODO: When available : downcast unchecked, the type should be guaranteed
// by the TagKey's generic
// (But there might be an issue if the key comes from somewhere else)
element.map(|x| x.downcast().unwrap())
}
}
impl Default for Tag
{
fn default() -> Self
{
Self::new()
}
}
@ -45,19 +256,7 @@ impl TagMergable<Tag> for Tag
{
fn merge(&self, other: &Self) -> Self
{
// TODO: More performant merge
let mut new = other.clone();
new.position = self.position;
{
let mut data_locked = new.data.lock().unwrap();
for (k, v) in self.data.lock().unwrap().iter()
{
data_locked.insert(k.clone(), v.clone());
}
}
new
Self::from_tags([self, other])
}
}
@ -65,15 +264,7 @@ impl TagMergable<Option<Tag>> for Option<Tag>
{
fn merge(&self, other: &Self) -> Self
{
match self
{
Some(first) => match other
{
Some(other) => Some(first.merge(other)),
None => Some(first.clone()),
},
None => other.clone(),
}
Tag::from_tag_opts([self, other])
}
}
@ -117,6 +308,16 @@ impl<T> Tagged<T>
self.1 = Some(tag);
t
}
pub fn retrieve<D: Send + Sync + 'static>(&self, key: &TagKey<D>) -> Option<Arc<D>>
{
self.1.as_ref().and_then(|t| t.retrieve(key))
}
pub fn add_entry<D: Send + Sync + 'static>(&mut self, key: TagKey<D>, value: D)
{
self.1.get_or_insert(Tag::default()).add_entry(key, value);
}
}
impl<T: Clone> Tagged<T>
@ -156,11 +357,11 @@ impl<T> From<(T, Option<Tag>)> for Tagged<T>
}
}
impl<T> Into<(T, Option<Tag>)> for Tagged<T>
impl<T> From<Tagged<T>> for (T, Option<Tag>)
{
fn into(self) -> (T, Option<Tag>)
fn from(val: Tagged<T>) -> Self
{
(self.0, self.1)
(val.0, val.1)
}
}