gbozo/no-sdr v2.1.0

v2.1.0 — Local RTL-SDR hardware settings fix

on GitHub

Bug Fix: Local RTL-SDR hardware configuration

Critical fix: RtlSdrSource (native USB dongle via librtlsdr) never applied hardware settings — directSampling, gain, biasT, AGC, offsetTuning, and PPM were silently ignored on both startup and profile switch.

What was broken

• RtlSdrSource methods had incompatible signatures (int/bool instead of uint32) and couldn't satisfy CommandableSource
• createSource() for local type never called applyDongleSettings() after Open()
• Profile switches via SwitchProfile() silently skipped hardware commands for local dongles

Changes

• Aligned all RtlSdrSource methods to match CommandableSource interface (uint32 params with internal conversion)
• Added missing SetOffsetTuning() and SetFrequencyCorrection() methods
• Generalized applyDongleSettings() to accept any CommandableSource (was *RtlTcpSource only)
• Added applyDongleSettings() call for local source after Open()
• Added compile-time interface check: _ CommandableSource = (*RtlSdrSource)(nil)

Also included

• Parallel IQ extraction for multi-client scenarios (goroutine per client)
• Admin API: expose demoMode, fftHistoryFftSize, fftHistoryCompression, adminPassword fields
• Fix: preserve existing profiles when PUT updates dongle-level fields only