[feat](trx-wefax): auto-detect active signal and show live decode

sjg/trx-rs

Add signal-level detection that monitors luminance variance to auto-start
receiving when tuning in mid-image (~3s of sustained modulated signal),
matching fldigi's "strong image signal" detection. Reduce APT sustain
to 1.0s (2 windows) matching fldigi. Emit initial "Idle — scanning"
state event so the frontend shows the decoder is processing audio.
Add tracing instrumentation for luminance stats and tone analysis.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>

This commit is contained in:

Stan Grams

2026-04-03 23:13:07 +02:00

parent 832cf2429d

commit e5d8533a74

5 changed files with 118 additions and 3 deletions

									
										src/decoders/trx-wefax/Cargo.toml
									
		+1
		
												View File
												
				@@ -11,3 +11,4 @@ edition = "2021"

				trx-core = { path = "../../trx-core" }

				base64 = "0.22"

				png = "0.17"

				tracing = "0.1"