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[feat](trx-wefax): implement WEFAX decoder with full server and frontend integration

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Pure Rust WEFAX (Weather Facsimile) decoder supporting 60/90/120/240 LPM,
IOC 288 and 576, with automatic APT tone detection and phase alignment.

Core DSP pipeline:
- Polyphase rational resampler (48k→11025 Hz)
- FM discriminator (Hilbert FIR + instantaneous frequency)
- Goertzel tone detector (300/450/675 Hz APT tones)
- Phase alignment via cross-correlation on phasing signal
- Line slicer with linear interpolation pixel clock recovery
- Image assembler with PNG encoding

State machine: Idle→StartDetected→Phasing→Receiving→Stopping

Server integration:
- WefaxMessage/WefaxProgress in trx-core DecodedMessage
- DecoderConfig, DecoderResetSeqs, RigCommand wefax variants
- DECODER_REGISTRY entry in trx-protocol
- DecoderHistories/DecoderLoggers wefax support
- run_wefax_decoder() async task in trx-server audio.rs
- History persistence in pickledb store

Frontend integration:
- wefax.js plugin with live canvas rendering and gallery
- HTML sub-tab with canvas, gallery, toggle/clear controls
- SSE dispatch for wefax/wefax_progress events
- Decode history worker and restore support
- Toggle/clear API endpoints

19 unit tests covering resampler, FM discriminator, tone detection,
phasing, line slicing, image encoding, and decoder state machine.

https://claude.ai/code/session_019eyxgx3LuhcFZ7T5tr2Trm
Signed-off-by: Claude <noreply@anthropic.com>
This commit is contained in:
Claude
2026-04-02 21:39:17 +00:00
committed by Stan Grams
parent d2db3d65bd
commit daa31fb6e5
40 changed files with 2292 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/trx-client/trx-frontend/trx-frontend-http/assets/web/app.js
+9 -3
View File
@@ -5926,7 +5926,9 @@ function dispatchDecodeMessage(msg, skipStats) {
if (msg.type === "wspr" && window.onServerWspr) window.onServerWspr(msg);
if (msg.type === "lrpt_image" && window.onServerLrptImage) window.onServerLrptImage(msg);
if (msg.type === "lrpt_progress" && window.onServerLrptProgress) window.onServerLrptProgress(msg);
if (!skipStats && msg.type && msg.type !== "lrpt_image" && msg.type !== "lrpt_progress") {
if (msg.type === "wefax" && window.onServerWefax) window.onServerWefax(msg);
if (msg.type === "wefax_progress" && window.onServerWefaxProgress) window.onServerWefaxProgress(msg);
if (!skipStats && msg.type && msg.type !== "lrpt_image" && msg.type !== "lrpt_progress" && msg.type !== "wefax" && msg.type !== "wefax_progress") {
window.trx.map?.statsRecordDecode(msg.type, msg.rig_id || msg.remote || null);
window.trx.map?.scheduleStatsRender();
}
@@ -5936,7 +5938,7 @@ function dispatchDecodeBatch(batch) {
if (!Array.isArray(batch) || batch.length === 0) return;
// Record statistics for every message in the batch regardless of dispatch path.
for (const msg of batch) {
if (msg.type && msg.type !== "lrpt_image" && msg.type !== "lrpt_progress") {
if (msg.type && msg.type !== "lrpt_image" && msg.type !== "lrpt_progress" && msg.type !== "wefax" && msg.type !== "wefax_progress") {
window.trx.map?.statsRecordDecode(msg.type, msg.rig_id || msg.remote || null);
}
}
@@ -6023,7 +6025,7 @@ function loadDecodeHistoryOnMainThread(onReady, onError) {
function restoreDecodeHistoryGroup(kind, messages) {
if (!Array.isArray(messages) || messages.length === 0) return;
// Record statistics for restored history messages.
if (kind !== "lrpt_image" && kind !== "lrpt_progress") {
if (kind !== "lrpt_image" && kind !== "lrpt_progress" && kind !== "wefax" && kind !== "wefax_progress") {
for (const msg of messages) {
window.trx.map?.statsRecordDecode(kind, msg.rig_id || msg.remote || null, msg.ts_ms || undefined);
}
@@ -6065,6 +6067,10 @@ function restoreDecodeHistoryGroup(kind, messages) {
window.restoreWsprHistory(messages);
return;
}
if (kind === "wefax" && window.restoreWefaxHistory) {
window.restoreWefaxHistory(messages);
return;
}
}
function connectDecode() {