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<ol class="chapter"><li class="chapter-item expanded affix "><a href="index.html">Introduction</a></li><li class="chapter-item expanded affix "><li class="part-title">Requirements & Traceability</li><li class="chapter-item expanded "><a href="requirements.html"><strong aria-hidden="true">1.</strong> Requirements Specification</a></li><li class="chapter-item expanded "><a href="traceability.html"><strong aria-hidden="true">2.</strong> Traceability Matrix</a></li><li class="chapter-item expanded "><a href="traceability-ci.html"><strong aria-hidden="true">3.</strong> Traceability CI</a></li><li class="chapter-item expanded "><a href="traces-quick-ref.html"><strong aria-hidden="true">4.</strong> Traces Quick Reference</a></li><li class="chapter-item expanded affix "><li class="part-title">Architecture</li><li class="chapter-item expanded "><a href="architecture/index.html"><strong aria-hidden="true">5.</strong> Overview</a><a class="toggle"><div>❱</div></a></li><li><ol class="section"><li class="chapter-item "><a href="architecture/01-rust-backend.html"><strong aria-hidden="true">5.1.</strong> Rust Backend</a></li><li class="chapter-item "><a href="architecture/02-svelte-frontend.html"><strong aria-hidden="true">5.2.</strong> Svelte Frontend</a></li><li class="chapter-item "><a href="architecture/03-data-flow.html"><strong aria-hidden="true">5.3.</strong> Data Flow</a></li><li class="chapter-item "><a href="architecture/04-type-sync-and-threading.html"><strong aria-hidden="true">5.4.</strong> Type Sync & Threading</a></li><li class="chapter-item "><a href="architecture/05-platform-backends.html"><strong aria-hidden="true">5.5.</strong> Platform Backends</a></li><li class="chapter-item "><a href="architecture/06-downloads-and-offline.html"><strong aria-hidden="true">5.6.</strong> Downloads & Offline</a></li><li class="chapter-item "><a href="architecture/07-connectivity.html"><strong aria-hidden="true">5.7.</strong> Connectivity</a></li><li class="chapter-item "><a href="architecture/08-database-design.html"><strong aria-hidden="true">5.8.</strong> Database Design</a></li><li class="chapter-item "><a href="architecture/09-security.html"><strong aria-hidden="true">5.9.</strong> Security</a></li></ol></li><li class="chapter-item expanded "><li class="part-title">UX</li><li class="chapter-item expanded "><a href="ux-flows.html"><strong aria-hidden="true">6.</strong> UX Flows</a></li><li class="chapter-item expanded affix "><li class="part-title">Specs — Pending Work</li><li class="chapter-item expanded "><a href="specs/index.html"><strong aria-hidden="true">7.</strong> Specs Index</a></li><li class="chapter-item expanded "><a href="specs/SPEC-TEMPLATE.html"><strong aria-hidden="true">8.</strong> Spec Template</a></li><li class="chapter-item expanded "><a href="specs/SPEC-REVIEW-CHECKLIST.html"><strong aria-hidden="true">9.</strong> Spec Review Checklist</a></li><li class="chapter-item expanded "><a href="specs/playback-backend-unification.html"><strong aria-hidden="true">10.</strong> Playback Backend Unification</a></li><li class="chapter-item expanded "><a href="specs/linux-native-video-spike.html"><strong aria-hidden="true">11.</strong> Linux Native Video Spike</a></li><li class="chapter-item expanded "><a href="specs/backend-owned-stream-selection.html"><strong aria-hidden="true">12.</strong> Backend-Owned Stream Selection</a></li><li class="chapter-item expanded "><a href="specs/player-facade-enforcement.html"><strong aria-hidden="true">13.</strong> Player Facade Enforcement</a></li><li class="chapter-item expanded "><a href="specs/windows-native-audio-backend.html"><strong aria-hidden="true">14.</strong> Windows Native Audio Backend</a></li><li class="chapter-item expanded "><a href="specs/libmpv2-migration.html"><strong aria-hidden="true">15.</strong> libmpv2 Migration</a></li><li class="chapter-item expanded "><a href="specs/read-through-media-cache.html"><strong aria-hidden="true">16.</strong> Read-Through Media Cache</a></li><li class="chapter-item expanded "><a href="specs/scoped-search.html"><strong aria-hidden="true">17.</strong> Scoped Search</a></li><li class="chapter-item expanded "><a href="specs/scoped-search-boundary.html"><strong aria-hidden="true">18.</strong> Scoped Search Boundary</a></li><li class="chapter-item expanded "><a href="specs/scoped-search-boundary-implementation.html"><strong aria-hidden="true">19.</strong> Scoped Search Boundary — Implementation</a></li><li class="chapter-item expanded "><a href="specs/frontend-domain-model.html"><strong aria-hidden="true">20.</strong> Frontend Domain Model</a></li><li class="chapter-item expanded "><a href="specs/desktop-native-video.html"><strong aria-hidden="true">21.</strong> Desktop Native Video</a></li><li class="chapter-item expanded "><a href="specs/build-provenance.html"><strong aria-hidden="true">22.</strong> Build Provenance</a></li><li class="chapter-item expanded affix "><li class="part-title">Build & Release</li><li class="chapter-item expanded "><a href="build/build-release.html"><strong aria-hidden="true">23.</strong> Build & Release</a></li><li class="chapter-item expanded "><a href="release-checklist.html"><strong aria-hidden="true">24.</strong> Release Checklist</a></li><li class="chapter-item expanded "><a href="native-player-verification.html" class="active"><strong aria-hidden="true">25.</strong> Native Player Verification</a></li><li class="chapter-item expanded "><a href="build/build-desktop-packages.html"><strong aria-hidden="true">26.</strong> Desktop Packaging</a></li><li class="chapter-item expanded "><a href="build/build-windows.html"><strong aria-hidden="true">27.</strong> Windows Build</a></li><li class="chapter-item expanded "><a href="defect-windows.html"><strong aria-hidden="true">28.</strong> Defect Windows</a></li><li class="chapter-item expanded "><a href="build/docker.html"><strong aria-hidden="true">29.</strong> Docker</a></li><li class="chapter-item expanded "><a href="build/build-builder-image.html"><strong aria-hidden="true">30.</strong> Builder Image</a></li><li class="chapter-item expanded affix "><li class="spacer"></li><li class="chapter-item expanded affix "><a href="api-redirect.html">Rust API Reference (rustdoc)</a></li></ol>
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<h1 id="native-player--verification-plan"><a class="header" href="#native-player--verification-plan">Native player — verification plan</a></h1>
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<p>What to check before the <code>MediaPlayer</code> contract and Linux native video reach
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<code>master</code>.</p>
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<p>This is not a generic smoke test. Every case below exists because something
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specific went wrong, and most of them were found on hardware <strong>after</strong> the
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automated suites were green. Treat the sequences as load-bearing: several
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defects only appeared in a particular order of actions, and testing the same
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features in a different order missed them entirely.</p>
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<p>Companion to <a href="release-checklist.html">release-checklist.md</a>, which covers the
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release mechanics. This covers whether the player is fit to release at all.</p>
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<h2 id="what-is-risky-about-this-change"><a class="header" href="#what-is-risky-about-this-change">What is risky about this change</a></h2>
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<ul>
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<li><code>PlayerController</code> now talks to a <code>MediaPlayer</code> contract instead of
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<code>PlayerBackend</code>. Every engine reaches it through an adapter that did not exist
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before (DR-245).</li>
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<li>mpv decodes video on Linux for the first time, composited under the webview
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(DR-231).</li>
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<li>Seek strategy is driven by an ability each engine declares rather than by a
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truth table (DR-246).</li>
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<li>Two regressions were introduced during this work and caught only on a device:
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a wrong capability for ExoPlayer (DR-246 follow-up) and a <code>Duration</code> panic
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(DR-252). Both were invisible to the test suites.</li>
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</ul>
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<p>The suites originally verified only engines that <em>behave</em>, which is why both
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regressions passed them. That gap is now partly closed in code rather than in
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this document: <code>UT-223</code> drives a deliberately hostile engine — <code>C.TIME_UNSET</code>,
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NaN, infinities, negatives — through the adapter, and fails with the exact
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panic that produced a black screen on a tablet. <code>UT-224</code> pins the handoff
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clearing that was previously verified by listening to a device.</p>
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<p><strong>Prefer moving cases out of this file and into tests.</strong> Anything here that
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could fail automatically should; a checklist depends on someone remembering to
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follow it, and the two defects it was written for cost hardware time that would
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have been better spent making the suites realistic. What is left below is what
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genuinely needs eyes, ears, or a display — not what merely has not been
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automated yet.</p>
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<h2 id="1-automated-gates"><a class="header" href="#1-automated-gates">1. Automated gates</a></h2>
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<p>Cheap, fast, and non-negotiable. Run from the worktree.</p>
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<pre><code class="language-bash">bun run check # 0 errors, 0 warnings
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bun run test # frontend
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bun run test:rust # Rust
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bun run format:check
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bun run lint # 0 errors; warnings at or below the CI ratchet
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bun run check:boundary
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bun run traces:validate
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bun run traces:coverage # at or above MIN_THRESHOLD
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cd src-tauri && cargo fmt --check && cargo clippy --all-targets -- -D warnings
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cargo clippy --all-targets --features conformance -- -D warnings
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</code></pre>
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<p>The eslint warning count is a <strong>ratchet</strong>: equal to the CI limit is a pass, one
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|
over fails the build. Going one over is how a piece of dead state was found
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during this work — do not raise the limit to get past it.</p>
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<h2 id="2-engine-conformance"><a class="header" href="#2-engine-conformance">2. Engine conformance</a></h2>
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<pre><code class="language-bash">bun run test:player # mpv + legacy, desktop
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bun run test:player:android # ExoPlayer, on a connected device
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</code></pre>
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<p>Expected, and each deviation is meaningful rather than noise:</p>
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<div class="table-wrapper"><table><thead><tr><th>Engine</th><th>Result</th><th>If it differs</th></tr></thead><tbody>
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<tr><td><code>MpvPlayer</code></td><td>9/9</td><td>A real regression. Stop.</td></tr>
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<tr><td><code>LegacyPlayer</code></td><td>8/9</td><td>The one failure is <code>transport_settings_round_trip</code>: the old trait has no mute or rate. Any <em>other</em> failure is a regression.</td></tr>
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<tr><td>ExoPlayer (device)</td><td>7/7</td><td>Two cases are absent because the Kotlin player exposes no mute or rate.</td></tr>
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</tbody></table>
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</div>
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<p>A green conformance run is <strong>not</strong> sufficient evidence to ship. Both regressions
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introduced during this work passed conformance.</p>
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<h2 id="3-desktop-linux"><a class="header" href="#3-desktop-linux">3. Desktop (Linux)</a></h2>
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<p>Run with native video on, since that is what is new:</p>
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<pre><code class="language-bash">JELLYTAU_NATIVE_VIDEO=1 bun run tauri dev
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</code></pre>
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<ul>
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<li><input disabled="" type="checkbox"/>
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<strong>Direct play</strong> — a file the server does not transcode. Picture and sound.</li>
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<li><input disabled="" type="checkbox"/>
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<strong>Transcoded play</strong> — something the server must re-encode (4K, HEVC, or an
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audio codec the renderer cannot take).</li>
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<li><input disabled="" type="checkbox"/>
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<strong>Resume</strong> — an item watched previously <em>on this install</em>. The prompt
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appears and playback starts at the offered position, not at zero.
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<em>(Resume is device-local — see "Known open".)</em></li>
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<li><input disabled="" type="checkbox"/>
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<strong>Scrub</strong> on a direct-play item; position lands and playback continues.</li>
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|
<li><input disabled="" type="checkbox"/>
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<strong>Scrub on a transcoded item.</strong> Separate case on purpose: it takes a
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different path, and it silently did nothing for months (DR-238).</li>
|
|
<li><input disabled="" type="checkbox"/>
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<strong>Pause and resume</strong> — the button follows the player. It stopped doing so
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when a property was handled but never observed (DR-239).</li>
|
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<li><input disabled="" type="checkbox"/>
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<strong>Fullscreen</strong> — the window really fills the display. Measure it if
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unsure: the log prints <code>rendering WxH</code>, and a height short of the panel
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|
means the document went fullscreen and the window did not (DR-240).</li>
|
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<li><input disabled="" type="checkbox"/>
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<strong>Exit the player</strong> — audio stops. Listen; do not assume.</li>
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<li><input disabled="" type="checkbox"/>
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<strong>Audio-only playback</strong> still works: mini player, queue, next/previous.</li>
|
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<li><input disabled="" type="checkbox"/>
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Nothing in the log matches <code>PANIC</code> or <code>ERROR</code>.</li>
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</ul>
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<h2 id="4-android"><a class="header" href="#4-android">4. Android</a></h2>
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<p>The tablet needs the <em>side-by-side</em> build. <strong>Do not uninstall the release app</strong>
|
|
to make an install succeed — see "Known open" for why the normal command is
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|
currently wrong.</p>
|
|
<pre><code class="language-bash">bun run android:build --device
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|
./scripts/sync-android-sources.sh
|
|
cd src-tauri/gen/android && ANDROID_HOME="$HOME/Android/Sdk" ./gradlew \
|
|
:app:assembleUniversalDebug -x :app:rustBuildUniversalDebug \
|
|
-x :app:rustBuildArm64Debug -x :app:rustBuildArmDebug \
|
|
-x :app:rustBuildX86Debug -x :app:rustBuildX86_64Debug
|
|
adb install -r app/build/outputs/apk/universal/debug/app-universal-debug.apk
|
|
</code></pre>
|
|
<p>Confirm the package is <code>com.dtourolle.jellytau.debug</code> before installing:</p>
|
|
<pre><code class="language-bash">aapt2 dump packagename <apk>
|
|
</code></pre>
|
|
<p>If it says <code>com.dtourolle.jellytau</code>, the suffix was lost — <strong>stop</strong>, re-sync and
|
|
re-assemble. Installing it would try to replace the real app.</p>
|
|
<p>Then, with <code>adb logcat</code> capturing:</p>
|
|
<ul>
|
|
<li>
|
|
<p><input disabled="" type="checkbox"/>
|
|
Play a video. Picture, sound, and controls.</p>
|
|
</li>
|
|
<li>
|
|
<p><input disabled="" type="checkbox"/>
|
|
<strong>Scrub.</strong> The bar has a scale — a duration of <code>0.0</code> means the seek bar has
|
|
nothing to scrub against (DR-251).</p>
|
|
</li>
|
|
<li>
|
|
<p><input disabled="" type="checkbox"/>
|
|
Transcoded seek lands rather than restarting the stream. ExoPlayer seeks a
|
|
transcode in place; declaring otherwise re-opened it (DR-246).</p>
|
|
</li>
|
|
<li>
|
|
<p><input disabled="" type="checkbox"/>
|
|
PiP.</p>
|
|
</li>
|
|
<li>
|
|
<p><input disabled="" type="checkbox"/>
|
|
Lockscreen: controls respond and position tracks.</p>
|
|
</li>
|
|
<li>
|
|
<p><input disabled="" type="checkbox"/>
|
|
<strong>The handoff sequence, in this exact order:</strong>
|
|
1. play a video
|
|
2. enable background audio
|
|
3. background the app — audio continues
|
|
4. foreground the app — <strong>video returns</strong>
|
|
5. exit the player — <strong>everything stops</strong></p>
|
|
<pre><code>Steps 4 and 5 are where two separate defects lived (DR-250, DR-252). Doing
|
|
the same actions in another order finds neither.
|
|
</code></pre>
|
|
</li>
|
|
<li>
|
|
<p><input disabled="" type="checkbox"/>
|
|
<code>grep -c 'PANIC at' <logcat></code> returns 0.</p>
|
|
</li>
|
|
</ul>
|
|
<h2 id="5-regression-checks-with-a-named-cause"><a class="header" href="#5-regression-checks-with-a-named-cause">5. Regression checks with a named cause</a></h2>
|
|
<p>Each of these presented as something other than its cause, which is why they are
|
|
listed separately from the feature passes above.</p>
|
|
<div class="table-wrapper"><table><thead><tr><th>Symptom to look for</th><th>Was actually</th><th>Ref</th></tr></thead><tbody>
|
|
<tr><td>Skip on a transcoded item does nothing, or jumps to zero</td><td>Seek strategy keyed on the container, not the engine</td><td>DR-238, DR-246</td></tr>
|
|
<tr><td>Play/pause button does not follow the player</td><td>A property handled but never observed, so the event never arrived</td><td>DR-239</td></tr>
|
|
<tr><td>Fullscreen leaves a strip of desktop</td><td>The document went fullscreen, the window did not</td><td>DR-240</td></tr>
|
|
<tr><td>Resume plays from the beginning</td><td>A seek issued before the engine had a file was discarded</td><td>DR-241</td></tr>
|
|
<tr><td>Scrub bar has no scale</td><td>Duration reported as <code>0.0</code> and believed</td><td>DR-251</td></tr>
|
|
<tr><td>Black screen, no controls, after a background-audio round trip</td><td>A junk duration converted to a <code>Duration</code> panicked the backend</td><td>DR-252</td></tr>
|
|
<tr><td>Audio still playing after leaving the player</td><td>The stop was aimed at whichever renderer bookkeeping believed was active</td><td>DR-250</td></tr>
|
|
</tbody></table>
|
|
</div>
|
|
<h2 id="known-open--decide-do-not-discover"><a class="header" href="#known-open--decide-do-not-discover">Known open — decide, do not discover</a></h2>
|
|
<p>None of these are fixed. Each needs an explicit ship / do-not-ship call rather
|
|
than being met with surprise during testing.</p>
|
|
<ul>
|
|
<li><strong>Resume is device-local.</strong> Progress is read from the local database and
|
|
nothing consults the server's <code>UserData</code>. A fresh install, a second device or
|
|
a reinstall offers no resume even though the server knows the position. Not a
|
|
regression — it has always been so.</li>
|
|
<li><strong>The background-audio handoff is an unconfirmed state swap.</strong>
|
|
<code>exit_background_audio</code> marks the video element the player again the moment it
|
|
is called, while the element has not reloaded. DR-250 makes the visible
|
|
symptom impossible; the race is intact and can still misdirect a lockscreen
|
|
command or a position read. See
|
|
<a href="specs/media-player-controller.html">media-player-controller.md</a>.</li>
|
|
<li>🔴 <strong>The side-by-side debug install is broken.</strong> <code>bun run android:dev</code>
|
|
produces an APK with the <em>release</em> application id, because the Tauri build
|
|
regenerates <code>gen/build.gradle.kts</code> after the sync drops the <code>.debug</code> suffix in.
|
|
It then fails on signatures, and its own error message advises uninstalling —
|
|
which would destroy the real app's data. <strong>Fix this before anyone else builds
|
|
for Android.</strong></li>
|
|
<li><strong><code>PlayerBackend</code> still exists</strong> behind <code>LegacyPlayer</code>, and the frontend still
|
|
carries some playback state. DR-248 and DR-249 are not started.</li>
|
|
</ul>
|
|
<h2 id="ship-criteria"><a class="header" href="#ship-criteria">Ship criteria</a></h2>
|
|
<p>Ship when:</p>
|
|
<ol>
|
|
<li>Every automated gate in §1 passes.</li>
|
|
<li>Conformance matches §2 exactly, deviations included.</li>
|
|
<li>§3 and §4 are complete, on real hardware, by a person.</li>
|
|
<li>§5 shows no symptom returning.</li>
|
|
<li>Every item in "Known open" has a recorded decision.</li>
|
|
</ol>
|
|
<p>Do not ship on green suites alone. Both regressions introduced during this work
|
|
passed every suite and were caught by a person using the app.</p>
|
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