Changelog

All notable changes to this package are documented here.

0.1.1 - 2026-11-08

Added

• Publish package discovery metadata, the README, the changelog, and the MIT license with this version.

Changed

• Update dependencies to Livt.Base 1.2.1, Livt.Math 1.7.2, and Livt.Collections 1.4.2. Existing component APIs remain unchanged from 0.1.0.

0.1.0 - 2026-11-04

Added

• CordicNcoQ15 with configurable 16- through 32-bit modulo phase, backpressure-coherent advancement, and Q1.15 sine/cosine output.
• One-stage RealMixerQ15 and ComplexMixerQ15 pipelines with atomic paired inputs, nearest-even Q1.15 quantization, saturation, and aligned framing.
• Scalar and compile-time-vector complex stream contracts for FFT/IFFT composition, including explicit direction, ordering, fixed-schedule scaling, and block-floating frame exponents.
• SequentialFftQ15, an in-place radix-2 FFT/IFFT for power-of-two sizes 8 through 4096 with one shared butterfly, fixed Q1.15 twiddles, configurable per-stage scaling, natural or bit-reversed boundaries, and retained backpressure-safe output.
• Q1.15-sample FIR numeric, streaming, reset, resource, and pipeline contract, including configurable coefficient formats and an explicit symmetric architecture.
• Full-throughput FirQ15 with fixed elaboration-time coefficients and multiplier-reduced SymmetricFirQ15 for mirrored coefficient sets.
• ReloadableFirQ15 and IFirQ15CoefficientControl with double-buffered, complete-bank loading and atomic activation.
• BiquadQ15, a fixed-coefficient direct-form-I second-order IIR section with Q2.14 defaults, exact accumulation, quantized stability checks, nearest-even rounding, saturation, and stall-safe recursive state.
• WindowQ15 and symmetric or periodic Hann, Hamming, and Blackman Q1.15 windows for power-of-two lengths 8 through 4096, using fixed folded coefficient tables and one multiplier.
• CicDecimatorQ15 and CicInterpolatorQ15 for multiplier-free compile-time integer rate changes, with full-width registered state, automatic or explicit Q1.15 output scaling, deterministic framing, and stall-safe pipelines.
• Unscaled signed-16 and signed/unsigned 32-bit sample-stream interfaces.
• Exact full-window moving sum, nearest-even mean, floored RMS, and floor population variance components for signed-16 sample streams.
• One-sample-per-clock rolling state and globally stallable arithmetic pipelines with stable markers and outputs under backpressure.
• IQ15SampleStream, the consumer-oriented signed Q1.15 valid/ready contract with aligned first and last frame markers.
• Q15SampleEncoding helpers for exact stream decoding and saturating encoding.
• Q15SampleDelay<STAGES>, a registered stall-safe sample alignment pipeline.
• Q15SampleFifo<CAPACITY>, a bounded FIFO that preserves samples and frame markers under backpressure.
• Usage documentation covering composition, numeric representation, backpressure, latency, framing, reset, and CDC boundaries.

Compatibility

• This is the first experimental release. Stream API compatibility is not guaranteed before Livt.Signal 1.0.0.