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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 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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"><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" class="active"><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 class="menu-title">JellyTau Documentation</h1>
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<main>
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<h1 id="windows-build"><a class="header" href="#windows-build">Windows build</a></h1>
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<p>JellyTau targets Linux and Android primarily, but a working Windows build —
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including an <strong>NSIS installer cross-compiled from Linux</strong> — is produced by the
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Docker tooling. It is not yet a first-class release target (no code signing / CI
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job / SMTC lockscreen), but it runs and plays media.</p>
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<h2 id="how-playback-works-on-windows"><a class="header" href="#how-playback-works-on-windows">How playback works on Windows</a></h2>
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<ul>
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<li><strong>Video</strong> — renders through the webview HTML5 <code><video></code> element (hls.js) on
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<em>every</em> platform; on Windows that is WebView2 (Chromium/Edge), which plays HLS +
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h264 fine. No Windows-specific code.</li>
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<li><strong>Audio-only (music)</strong> — the native audio backends are libmpv (Linux) and
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ExoPlayer (Android); neither exists on Windows. Instead
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<code>create_player_backend()</code> in <a href="../../src-tauri/src/lib.rs">../src-tauri/src/lib.rs</a>
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uses <code>WebviewAudioBackend</code> on non-Linux/non-Android targets: it hands the stream
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URL to a webview <code><audio></code> element (see
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<a href="../../src/lib/services/webviewAudio.ts">../src/lib/services/webviewAudio.ts</a>),
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which reports state back through the same <code>player_report_*</code> round-trip the video
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path uses. Pure Rust + Tauri events.</li>
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</ul>
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<h2 id="cross-compiling-from-linux-msvc--cargo-xwin"><a class="header" href="#cross-compiling-from-linux-msvc--cargo-xwin">Cross-compiling from Linux (MSVC + cargo-xwin)</a></h2>
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<p>We use the <a href="https://v2.tauri.app/distribute/windows-installer/">official Tauri cross-compile path</a>:
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the <strong>MSVC</strong> target (<code>x86_64-pc-windows-msvc</code>) driven by
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<a href="https://github.com/rust-cross/cargo-xwin"><code>cargo-xwin</code></a>, which downloads the MSVC
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CRT / Windows SDK headers and links with <code>lld</code>. MSVC is the target Tauri
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officially supports for Windows (mingw/GNU is not), and — unlike GNU — it lets the
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Tauri CLI bundle the <strong>NSIS installer from a Linux host</strong>.</p>
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<blockquote>
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<p>Why not mingw/GNU? The GNU target <em>does</em> link a valid <code>.exe</code>, but the Tauri CLI
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gates <code>--bundles</code> by the host OS unless it recognizes a real Windows build.
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<code>--runner cargo-xwin --target x86_64-pc-windows-msvc</code> is what flips it into
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Windows mode and enables the <code>nsis</code>/<code>msi</code> bundlers on Linux.</p>
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</blockquote>
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<p>The builder image (<a href="../../Dockerfile.builder">../Dockerfile.builder</a>) bakes in the
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whole toolchain: the <code>x86_64-pc-windows-msvc</code> rust target, <code>cargo-xwin</code>, <code>lld</code>,
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<code>llvm</code>, and <code>nsis</code>.</p>
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<pre><code class="language-bash">bun run docker:build:windows # NSIS installer + .exe -> ./dist
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WIN_BUNDLES=none bun run docker:build:windows # exe only, skip bundling
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</code></pre>
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<p>Or directly on a host that has the toolchain:</p>
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<pre><code class="language-bash">scripts/build-windows-cross.sh # nsis installer + exe
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WIN_BUNDLES=none scripts/build-windows-cross.sh # exe only
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</code></pre>
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<p>Under the hood the build runs:</p>
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<pre><code class="language-bash">tauri build --runner cargo-xwin --target x86_64-pc-windows-msvc --bundles nsis
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</code></pre>
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<p>Outputs:</p>
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<ul>
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<li><code>.exe</code> — <code>src-tauri/target/x86_64-pc-windows-msvc/release/jellytau.exe</code></li>
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<li>NSIS installer — <code>.../release/bundle/nsis/*-setup.exe</code></li>
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</ul>
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<p>(both copied to <code>./dist</code> when <code>OUTPUT_DIR</code> is set).</p>
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<h2 id="caveats"><a class="header" href="#caveats">Caveats</a></h2>
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<ul>
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<li><strong>Cross-compilation is a last resort</strong> per Tauri's own docs — it's less tested
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than building on Windows. If it misbehaves, a <code>windows-latest</code> CI job or a
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Windows VM building natively (<code>tauri build --bundles nsis</code>) is the fallback.</li>
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<li><strong>Code signing is not wired up</strong> — the installer is unsigned, so Windows
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SmartScreen will warn on first run.</li>
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</ul>
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<h2 id="outstanding-for-a-first-class-windows-release"><a class="header" href="#outstanding-for-a-first-class-windows-release">Outstanding for a first-class Windows release</a></h2>
|
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<ol>
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<li>Gapless/crossfade + SMTC (lockscreen) — currently no-ops in the webview audio
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|
path.</li>
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|
<li>Downloaded (<code>Local</code> source) file playback needs <code>convertFileSrc</code> on the
|
|
frontend; streaming works today.</li>
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|
<li>Code signing + a Windows packaging CI job.</li>
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</ol>
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