5 Commits

Include renames

Author	SHA1	Message	Date
sjgandClaude Opus 5	dbab4c5b99	[feat](trx-rs): make spectrum affordable over a slow link ... Spectrum dominates the server↔client connection, and all three things that govern its cost were working against a poor link. **It was polled, one round trip per frame.** The client asked for a frame every 50 ms on a dedicated connection and waited for the reply, so the frame rate was capped at 1/RTT — on a 200 ms link, five frames a second no matter what was configured. Add SubscribeSpectrum alongside the existing SubscribeMeter: the server pushes frames from a per-rig broadcast that rig_task fills only while somebody is subscribed. A server too old to know the command answers with an error and leaves the connection usable, so the client falls back to polling on the same connection without reconnecting. **Bins were JSON floats.** 1024 bins spelled out as decimal text is around 10 KB a frame, ~200 KB/s at full rate — while the very next hop, client to browser, already sends the same information as base64 i8 in about 1.4 KB. Bins now travel base64-encoded whole dBFS, the resolution the display draws at anyway. Decoding still accepts the old array form. **Nothing was tunable.** [sdr].spectrum_fft_size and [sdr].spectrum_interval_ms replace the compile-time FFT size and cadence; [[remotes]].spectrum_interval_ms lets the client ask for less. 512 bins at 5 frames/s is roughly 3.5 KB/s against roughly 200 KB/s before. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SyX26FCpMQxiBoC7r5K1A7 Signed-off-by: Stan Grams <sjg@haxx.space>	2026-08-06 23:58:26 +02:00
sjg	18107ce07e	[feat](trx-rs): receive SSTV pictures end to end ... Wires the SSTV decoder into the stack, from the audio the server already has to a panel in the browser that shows the picture arriving. Server: a decoder task alongside the WEFAX one, running whenever the decoder is enabled and the rig is in a mode SSTV is sent in. A finished picture is written to the cache as a PNG and sent on as a message; the rows are sent as they decode, so a client can watch two minutes of Martin M1 fill in rather than waiting for it. Pictures join the decode history, are replayed to a client that connects later, and survive a restart. Protocol: SetSstvDecodeEnabled and ResetSstvDecoder, a sstv_decode _enabled flag in the rig state, two audio message types, and Sstv and SstvProgress on DecodedMessage. The history stores the message without its base64 payload -- the picture is already on disk, and a megabyte per entry is not what a history is for. Client: pictures land in their own history, and the PNG the server sent is written to the local cache so /sstv-images/ can serve it back. That endpoint and the WEFAX one now share their filename checks rather than each carrying a copy: no separators, no parent references, .png only. Web UI: an SSTV sub-tab beside WEFAX, with a live canvas the rows paint into at the line number they carry, a card for the last picture, and a filterable history with links to the files. Rows below the one arriving are grey rather than black -- not yet received is a different thing from received as black. A picture is not a spot, so neither pictures nor their progress updates reach the decode statistics; that exclusion list had grown by hand for LRPT and WEFAX and is now one named set. The decoder crate gains what the server needed to hand a picture on: to_png, to_png_base64 and save_png, with file names stamped in UTC so they sort. Panel behaviour is tested with the plugin runtime: rows painting at their own line numbers rather than in arrival order, a completed picture linked by file name alone with no server path in the page, a cut-off picture reported as partial, clearing, and the toggle following the rig state. Signed-off-by: Stan Grams <sjg@haxx.space>	2026-08-06 00:14:59 +02:00
sjg	a0b0c0ed81	[feat](trx-sstv): decode SSTV pictures ... A new decoder crate covering the modes SSTV is actually sent in: Martin M1/M2, Scottie S1/S2/DX, Robot 36/72, PD50 through PD290, and Wraase SC2-180. The mode comes from the VIS header every transmission opens with, so nothing has to be told what is arriving. Modes are a table rather than code: a list of segments -- sync, gaps, and one scan per colour channel -- plus a colour model and a geometry. The decoder reads the offset of each scan straight off that list, which is what makes fifteen modes cost about as much as one, and a new mode a table entry. The segment lists are checked against the published line durations in a test, because both are transcribed by hand from the same specification and a digit wrong in one is unlikely to be wrong identically in the other. Signal path: band-pass over the SSTV band, Hilbert FIR, instantaneous frequency by phase difference, then a state machine that walks the transmission a line at a time. Each line is looked for where the mode says it should be and nudged into place by the sync pulse found near it -- two sound cards never agree exactly, and over the two minutes of a Martin M1 frame an uncorrected error of a few parts per million shears the picture visibly. Rows are emitted as they decode, so a picture can be watched arriving, which is most of the appeal of the mode. Four things this cost, each now the reason a piece of it is shaped the way it is: The per-sample frequency estimate ripples by ±95 Hz at 1200 Hz, where the Hilbert approximation is weakest, though its mean is exact. Pixels average over their own window and were always right; the VIS bits and the sync detector classify individual samples and were reading the ripple. Both now read short means. Pixels deliberately still do not, so edges stay where they are. Broadband noise cost the whole picture, not part of it: a phase-difference detector answers whatever is loudest, and there was no input filter. Hence the band-pass, which is what every real decoder does first. A sync search window shorter than a sync pulse rejected every pulse arriving late in it, for being short. The first line's sync search locked onto the VIS stop bit -- 30 ms at exactly the sync frequency, immediately before the picture starts. The header already says where the picture begins, so the first line no longer searches. Tests: nine modes are encoded from a test card and decoded back, compared pixel by pixel, alongside silence around the signal, a transmission cut off part way, two transmissions back to back, 20 dB of noise, and a transmitter clock 0.1% fast. The encoder that produces those signals reads the same table as the decoder, so a round trip tests the decoder and not the timings; the timings are held to the published line durations separately. Nothing is wired into the server or the web UI yet: this is the decoder alone. Signed-off-by: Stan Grams <sjg@haxx.space>	2026-08-05 23:29:52 +02:00
sjg	bbc53d56b0	feat: generate typed frontend API contracts	2026-08-01 11:58:09 +02:00
sjg	ba48de2d30	Initial commit ... Signed-off-by: Stan Grams <sjg@haxx.space>	2026-05-17 23:25:14 +02:00