ff04fbce52457a9cde5f9fe3d4e2e8fa8d8c5b22
5 Commits
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Sylpheed port agent
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6210c2e131 |
port: my correlation instrument failed its own control -- the negative had to be re-earned
Take 2 is a good file: it passes check-capture (I re-ran it rather than cite the Decoder's run), carries a screen log, and was recorded with the sink's channel_map set equal to Canary's own. BEFORE REPORTING A SECOND NEGATIVE I ASKED WHETHER MY METHOD COULD DO THE JOB, by building a synthetic mix -- the bed plus the three voice streams -- and hunting the bed inside it. It failed: r=0.415, against the r>0.8 bar my earlier negatives were judged against. So the instrument that produced "the capture contains no ADV audio" could not have found ADV audio in a mix even when it was certainly there. That conclusion was right -- the Decoder's tone control proved take 1 corrupt independently -- but it was right BY LUCK and I reported it as measurement. The three controls I was pleased with tested that the method finds a clean signal in a clean reference, which was never the task. REBUILT AND CALIBRATED IN BOTH DIRECTIONS. Band-limit so the target dominates, then judge on LAG and MARGIN rather than absolute r -- r>0.8 is correct clean-against-clean and meaningless for a component in a mix. bed, 40-180 Hz in a mix containing it r=0.663 lag 0.0 s margin +0.111 bed, 40-180 Hz against a voice-only mix r=0.262 lag wrong margin +0.005 voice, 300-3000 in a mix containing it r=0.810 lag 0.0 s margin +0.248 voice, 300-3000 against the bed alone r=0.358 lag wrong margin +0.005 A 20-50x separation in the discriminating statistic. Written up as AUDIO-VERIFICATION.md section 6, retraction included. THE NEGATIVE NOW STANDS ON SOMETHING. All six of take 2's channels, against both targets, sit in the known-absent regime: margins 0.000-0.017, lags scattered from -72 to +255 s. Take 2 contains neither the movie's WMA bed nor the cutscene voice. Two captures, differently configured, the second provably free of the channel-map fault, with a screen log saying the movie was on screen, and neither carries either source. Handed back: a capture path still losing the mix, or the guest not emitting these sources during the movie, and only one side of the wall can tell those apart. If it is the second it reaches the port directly -- the export's movie audio comes from the .wmv's WMA track. Also noted: the message gives 253.3 s, the file is 318.539 s. The screen log agrees with the file, so it is a mis-stated number, but a length quoted in a provenance claim should match the artefact. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01N7FiFFFwbvG2uxdcEh8HyF |
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Sylpheed port agent
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f23180c4eb |
port: a capture must pass a provenance check before anyone analyses it
The 6-channel capture I spent an iteration refuting was corrupt, and the Decoder found the cause: PulseAudio remapping between two mismatched channel maps, where a 6-channel remap SILENTLY DROPS AND DUPLICATES. Its control -- six channels, six tones, same sink, same parec -- came back 400/3200/200/800/800/200 for an input of 400/800/200/1600/3200/6400. Two source channels gone entirely. So the negative was right, and the byte-identical pair I reported was the thread that unravelled it. Worth recording precisely, because it nearly went unreported: it began as an idle look at two channels whose peak AND RMS matched to six decimals, and it only became evidence because a coincidence at six decimals is cheaper to hash than to explain. `tools/port/check-capture` makes that check one command -- split the file, hash every channel, fail on any duplicate pair -- and AUDIO-VERIFICATION.md gains a section 5 saying to run it FIRST, every time, plus the two conditions the same incident produced: start the recorder before the process, and log what was on screen against the recording's own clock so a miss is diagnosable. Controlled both directions, because a checker nobody controlled is what this incident is about: six distinct tones PASS; the remap's own output pattern FAILS naming all four pairs; the corrupt capture FAILS on ch2 == ch5. THE KNOWN-BAD CONTROL IS THE POINT. All six of its channels report a peak of -18.063656 dB, identical to six decimals, while containing three duplicate pairs. A level check cannot see this failure. That is why the tool hashes rather than measures, and why the corrupt capture's "plausible per-channel levels" were never evidence. The tool says of itself that it is necessary, not sufficient. Withdrawn with the file, both the Decoder's: "all six channels carry signal", and the non-zero-surround observation offered as weak support for 5.1. Unaffected: the three-XMA-context concurrency result, read from the emulator's log rather than the audio path, on two independent boots. The corrupt file is dropped from the exchange so the next agent cannot pick it up and repeat the work. Nothing in the export changed. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01N7FiFFFwbvG2uxdcEh8HyF |
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Sylpheed port agent
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d6252481e1 |
port: P6 -- the menu has sound, and the BGM I "chose" was decoded all along
The three Static.slb cues and the menu bed now export to Ogg Vorbis and play.
`sylpheed_formats::media` does the assembly; nothing in port/ has heard of XMA.
Three things this milestone got wrong before it got right, all recorded in
docs/port/DECISIONS.md because the corrections are the useful part:
1. The cue offsets were a Rust `const` in the exporter. They are MEASURED, not
decoded -- a measured value compiled into the exporter is a measurement
wearing the costume of a decoded field, and nobody deletes it because nobody
can see it. They are authored/audio.json now.
2. I picked BGM_001 and wrote a careful `why` calling the choice arbitrary. The
menu's music is BGM_103, and it is in HANDOFF at
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MechaCat02
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7e643c242c |
audio: actually install the capture path I kept deferring
The audio work was three parts and I shipped two. The transcode-fidelity method and the pinned 5.1 downmix landed; the null sink -- the only one that answers "what does the GAME play" -- I deferred to "the next natural rebuild window" and then rebuilt both images four times without doing it. pulseaudio-utils is now in both, with tools/audio-capture wrapping it: a null sink is a real device as far as an application is concerned, so Canary and Godot open it normally and parec records what they emit. This unblocks the decoder's Q8. The cue-to-event bindings are currently a name match against the authors' own identifiers -- a plausible guess, not a measurement -- and capturing what the game plays on a menu move converts them. `audio-capture run` reports the peak level and warns when the capture is silent, because silence is the failure that looks like success: a WAV of exactly the right duration, full of zeroes, because the application opened a different sink. A duration check alone passes it, which is how a confident wrong number gets made. |
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MechaCat02
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9fbb352ef0 |
monorepo: one repository for the decoders, the port and the corpus
Merges the Godot port into the reverse-engineering repository, preserving both
histories -- 1019 commits of corpus plus the port's 31, brought in by subtree
merge and then moved into place so git can follow each file across the rename.
The reason is not tidiness. The two-repo split forced the exporter to depend on
the decoders by pinned revision, and that created a whole class of failure that
now disappears: a sha reachable only from a topic branch, orphaned by a
squash-merge, breaking a fresh checkout silently at build time. It also forced a
live read-only mount of one agent's working tree into another's container, which
is why a contract file could move mid-iteration. With a path dependency, a
decoder change and the exporter change it requires land in the same commit or
not at all.
Canary stays separate: it is a fork tracking upstream.
New structure for the long term:
docs/game/ how the game is NAVIGATED -- menus, modals, prompts, alerts,
and in-game flight. Written so nobody rediscovers it. Mostly
open questions on purpose; the in-game tutorials are the
resource for the flight half.
docs/port/MODDING.md
modding as a constraint on the exporter TODAY, not a later
feature: one logical asset in one file (the disc splits nearly
everything, and resolving that is the exporter's job), names a
person recognises, PNG/OGG/OGV/JSON only, base-and-overrides so
re-exporting is always safe, provenance in every file.
data/base + data/mods
generated tree and drop-in overrides, both gitignored
exchange/ transient inter-agent files, deliberately outside history
docs/agents/ the team protocol
Both the README and the navigation doc lead with the correction that cost the
most: the oracle is the real game under Xenia Canary. Reborn's renderer is a
hypothesis under test, it has been wrong, and treating it as ground truth
propagated into three documents and both agents before a human caught it.
Scripted modding stays possible without being built: no screen name is hardcoded
in GDScript and there is no native code in port/, which is what Godot Mod Loader
needs to be able to substitute behaviour later.
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