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[chore](trx-rs): refine pending SDR frontend and backend changes

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Signed-off-by: Stan Grams <sjg@haxx.space>
Co-authored-by: OpenAI Codex <codex@openai.com>
This commit is contained in:
Stan Grams
2026-02-27 23:09:21 +01:00
parent 071157e5bf
commit 7f222eaf10
6 changed files with 50 additions and 58 deletions
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src/trx-server/trx-backend/trx-backend-soapysdr/src/dsp.rs
+6 -21
View File
@@ -172,10 +172,8 @@ impl BlockFirFilter {
let ifft = planner.plan_fft_inverse(fft_size);
// Pre-compute H(f) = FFT of zero-padded coefficients.
let mut h_buf: Vec<FftComplex<f32>> = coeffs
.iter()
.map(|&c| FftComplex::new(c, 0.0))
.collect();
let mut h_buf: Vec<FftComplex<f32>> =
coeffs.iter().map(|&c| FftComplex::new(c, 0.0)).collect();
h_buf.resize(fft_size, FftComplex::new(0.0, 0.0));
fft.process(&mut h_buf);
@@ -384,8 +382,7 @@ impl ChannelDsp {
mixed_q[idx] = sample.re * lo_im + sample.im * lo_re;
}
// Advance phase with wrap to avoid precision loss.
self.mixer_phase =
(phase_start + n as f64 * phase_inc).rem_euclid(std::f64::consts::TAU);
self.mixer_phase = (phase_start + n as f64 * phase_inc).rem_euclid(std::f64::consts::TAU);
// --- 2. FFT FIR (overlap-save) --------------------------------------
let filtered_i = self.lpf_i.filter_block(&mixed_i);
@@ -471,8 +468,7 @@ impl SdrPipeline {
let thread_dsps: Vec<Arc<Mutex<ChannelDsp>>> = channel_dsps.clone();
let spectrum_buf: Arc<Mutex<Option<Vec<f32>>>> = Arc::new(Mutex::new(None));
let thread_spectrum_buf = spectrum_buf.clone();
let retune_cmd: Arc<std::sync::Mutex<Option<f64>>> =
Arc::new(std::sync::Mutex::new(None));
let retune_cmd: Arc<std::sync::Mutex<Option<f64>>> = Arc::new(std::sync::Mutex::new(None));
let thread_retune_cmd = retune_cmd.clone();
std::thread::Builder::new()
@@ -529,9 +525,7 @@ fn iq_read_loop(
// Pre-compute Hann window coefficients.
let hann_window: Vec<f32> = (0..SPECTRUM_FFT_SIZE)
.map(|i| {
0.5 * (1.0 - (2.0 * PI * i as f32 / (SPECTRUM_FFT_SIZE - 1) as f32).cos())
})
.map(|i| 0.5 * (1.0 - (2.0 * PI * i as f32 / (SPECTRUM_FFT_SIZE - 1) as f32).cos()))
.collect();
let mut planner = FftPlanner::<f32>::new();
@@ -683,16 +677,7 @@ mod tests {
#[test]
fn channel_dsp_processes_silence() {
let (pcm_tx, _pcm_rx) = broadcast::channel::<Vec<f32>>(8);
let mut dsp = ChannelDsp::new(
0.0,
&RigMode::USB,
48_000,
8_000,
20,
3000,
31,
pcm_tx,
);
let mut dsp = ChannelDsp::new(0.0, &RigMode::USB, 48_000, 8_000, 20, 3000, 31, pcm_tx);
let block = vec![Complex::new(0.0_f32, 0.0_f32); 4096];
dsp.process_block(&block);
}