435 lines
27 KiB
HTML
435 lines
27 KiB
HTML
<!DOCTYPE HTML>
|
|
<html lang="en" class="navy" dir="ltr">
|
|
<head>
|
|
<!-- Book generated using mdBook -->
|
|
<meta charset="UTF-8">
|
|
<title>Data Flow - JellyTau Documentation</title>
|
|
|
|
|
|
<!-- Custom HTML head -->
|
|
|
|
<meta name="description" content="Requirements, traceability, and architecture for the JellyTau Jellyfin client.">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
|
<meta name="theme-color" content="#ffffff">
|
|
|
|
<link rel="icon" href="../favicon.svg">
|
|
<link rel="shortcut icon" href="../favicon.png">
|
|
<link rel="stylesheet" href="../css/variables.css">
|
|
<link rel="stylesheet" href="../css/general.css">
|
|
<link rel="stylesheet" href="../css/chrome.css">
|
|
<link rel="stylesheet" href="../css/print.css" media="print">
|
|
|
|
<!-- Fonts -->
|
|
<link rel="stylesheet" href="../FontAwesome/css/font-awesome.css">
|
|
<link rel="stylesheet" href="../fonts/fonts.css">
|
|
|
|
<!-- Highlight.js Stylesheets -->
|
|
<link rel="stylesheet" href="../highlight.css">
|
|
<link rel="stylesheet" href="../tomorrow-night.css">
|
|
<link rel="stylesheet" href="../ayu-highlight.css">
|
|
|
|
<!-- Custom theme stylesheets -->
|
|
|
|
</head>
|
|
<body class="sidebar-visible no-js">
|
|
<div id="body-container">
|
|
<!-- Provide site root to javascript -->
|
|
<script>
|
|
var path_to_root = "../";
|
|
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "navy";
|
|
</script>
|
|
|
|
<!-- Work around some values being stored in localStorage wrapped in quotes -->
|
|
<script>
|
|
try {
|
|
var theme = localStorage.getItem('mdbook-theme');
|
|
var sidebar = localStorage.getItem('mdbook-sidebar');
|
|
|
|
if (theme.startsWith('"') && theme.endsWith('"')) {
|
|
localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
|
|
}
|
|
|
|
if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
|
|
localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
|
|
}
|
|
} catch (e) { }
|
|
</script>
|
|
|
|
<!-- Set the theme before any content is loaded, prevents flash -->
|
|
<script>
|
|
var theme;
|
|
try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
|
|
if (theme === null || theme === undefined) { theme = default_theme; }
|
|
var html = document.querySelector('html');
|
|
html.classList.remove('navy')
|
|
html.classList.add(theme);
|
|
var body = document.querySelector('body');
|
|
body.classList.remove('no-js')
|
|
body.classList.add('js');
|
|
</script>
|
|
|
|
<input type="checkbox" id="sidebar-toggle-anchor" class="hidden">
|
|
|
|
<!-- Hide / unhide sidebar before it is displayed -->
|
|
<script>
|
|
var body = document.querySelector('body');
|
|
var sidebar = null;
|
|
var sidebar_toggle = document.getElementById("sidebar-toggle-anchor");
|
|
if (document.body.clientWidth >= 1080) {
|
|
try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
|
|
sidebar = sidebar || 'visible';
|
|
} else {
|
|
sidebar = 'hidden';
|
|
}
|
|
sidebar_toggle.checked = sidebar === 'visible';
|
|
body.classList.remove('sidebar-visible');
|
|
body.classList.add("sidebar-" + sidebar);
|
|
</script>
|
|
|
|
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
|
<div class="sidebar-scrollbox">
|
|
<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 expanded "><a href="../architecture/03-data-flow.html" class="active"><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/build-provenance.html"><strong aria-hidden="true">21.</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">22.</strong> Build & Release</a></li><li class="chapter-item expanded "><a href="../release-checklist.html"><strong aria-hidden="true">23.</strong> Release Checklist</a></li><li class="chapter-item expanded "><a href="../build/build-desktop-packages.html"><strong aria-hidden="true">24.</strong> Desktop Packaging</a></li><li class="chapter-item expanded "><a href="../build/build-windows.html"><strong aria-hidden="true">25.</strong> Windows Build</a></li><li class="chapter-item expanded "><a href="../defect-windows.html"><strong aria-hidden="true">26.</strong> Defect Windows</a></li><li class="chapter-item expanded "><a href="../build/docker.html"><strong aria-hidden="true">27.</strong> Docker</a></li><li class="chapter-item expanded "><a href="../build/build-builder-image.html"><strong aria-hidden="true">28.</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>
|
|
</div>
|
|
<div id="sidebar-resize-handle" class="sidebar-resize-handle">
|
|
<div class="sidebar-resize-indicator"></div>
|
|
</div>
|
|
</nav>
|
|
|
|
<!-- Track and set sidebar scroll position -->
|
|
<script>
|
|
var sidebarScrollbox = document.querySelector('#sidebar .sidebar-scrollbox');
|
|
sidebarScrollbox.addEventListener('click', function(e) {
|
|
if (e.target.tagName === 'A') {
|
|
sessionStorage.setItem('sidebar-scroll', sidebarScrollbox.scrollTop);
|
|
}
|
|
}, { passive: true });
|
|
var sidebarScrollTop = sessionStorage.getItem('sidebar-scroll');
|
|
sessionStorage.removeItem('sidebar-scroll');
|
|
if (sidebarScrollTop) {
|
|
// preserve sidebar scroll position when navigating via links within sidebar
|
|
sidebarScrollbox.scrollTop = sidebarScrollTop;
|
|
} else {
|
|
// scroll sidebar to current active section when navigating via "next/previous chapter" buttons
|
|
var activeSection = document.querySelector('#sidebar .active');
|
|
if (activeSection) {
|
|
activeSection.scrollIntoView({ block: 'center' });
|
|
}
|
|
}
|
|
</script>
|
|
|
|
<div id="page-wrapper" class="page-wrapper">
|
|
|
|
<div class="page">
|
|
<div id="menu-bar-hover-placeholder"></div>
|
|
<div id="menu-bar" class="menu-bar sticky">
|
|
<div class="left-buttons">
|
|
<label id="sidebar-toggle" class="icon-button" for="sidebar-toggle-anchor" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
|
|
<i class="fa fa-bars"></i>
|
|
</label>
|
|
<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
|
|
<i class="fa fa-paint-brush"></i>
|
|
</button>
|
|
<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
|
|
<li role="none"><button role="menuitem" class="theme" id="light">Light</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
|
|
</ul>
|
|
<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
|
|
<i class="fa fa-search"></i>
|
|
</button>
|
|
</div>
|
|
|
|
<h1 class="menu-title">JellyTau Documentation</h1>
|
|
|
|
<div class="right-buttons">
|
|
<a href="../print.html" title="Print this book" aria-label="Print this book">
|
|
<i id="print-button" class="fa fa-print"></i>
|
|
</a>
|
|
<a href="https://gitea.tourolle.paris/dtourolle/jellytau" title="Git repository" aria-label="Git repository">
|
|
<i id="git-repository-button" class="fa fa-github"></i>
|
|
</a>
|
|
<a href="https://gitea.tourolle.paris/dtourolle/jellytau/_edit/master/docs/../docs/architecture/03-data-flow.md" title="Suggest an edit" aria-label="Suggest an edit">
|
|
<i id="git-edit-button" class="fa fa-edit"></i>
|
|
</a>
|
|
|
|
</div>
|
|
</div>
|
|
|
|
<div id="search-wrapper" class="hidden">
|
|
<form id="searchbar-outer" class="searchbar-outer">
|
|
<input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
|
|
</form>
|
|
<div id="searchresults-outer" class="searchresults-outer hidden">
|
|
<div id="searchresults-header" class="searchresults-header"></div>
|
|
<ul id="searchresults">
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
|
|
<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
|
|
<script>
|
|
document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
|
|
document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
|
|
Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
|
|
link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
|
|
});
|
|
</script>
|
|
|
|
<div id="content" class="content">
|
|
<main>
|
|
<h1 id="data-flow"><a class="header" href="#data-flow">Data Flow</a></h1>
|
|
<h2 id="repository-query-flow-cache-first"><a class="header" href="#repository-query-flow-cache-first">Repository Query Flow (Cache-First)</a></h2>
|
|
<pre><code class="language-mermaid">sequenceDiagram
|
|
participant UI as Svelte Component
|
|
participant Client as RepositoryClient (TS)
|
|
participant Rust as Tauri Command
|
|
participant Hybrid as HybridRepository
|
|
participant Cache as OfflineRepository (SQLite)
|
|
participant Server as OnlineRepository (HTTP)
|
|
participant Conn as ConnectivityMonitor
|
|
|
|
UI->>Client: getItems(parentId)
|
|
Client->>Rust: invoke("repository_get_items", {handle, parentId})
|
|
Rust->>Hybrid: get_items()
|
|
|
|
par Parallel Racing
|
|
Hybrid->>Cache: get_items() with 100ms timeout
|
|
Hybrid->>Server: get_items() (no timeout)
|
|
end
|
|
|
|
Note over Server,Conn: Every server request reports its outcome
|
|
alt Server succeeds (or answers with 4xx/5xx)
|
|
Server->>Conn: mark_reachable() (server is up)
|
|
else Network failure / timeout
|
|
Server->>Conn: mark_unreachable() (debounced)
|
|
end
|
|
|
|
alt Cache returns with content
|
|
Cache-->>Hybrid: Result with items
|
|
Hybrid-->>Rust: Return cache result
|
|
else Cache timeout or empty
|
|
Server-->>Hybrid: Fresh result
|
|
Hybrid-->>Rust: Return server result
|
|
end
|
|
|
|
Rust-->>Client: SearchResult
|
|
Client-->>UI: items[]
|
|
Note over UI: Reactive update
|
|
</code></pre>
|
|
<p><strong>Key Points:</strong></p>
|
|
<ul>
|
|
<li>Cache queries have 100ms timeout for responsiveness</li>
|
|
<li>Server queries always run for fresh data</li>
|
|
<li>Cache wins if it has meaningful content</li>
|
|
<li>Automatic fallback to server if cache is empty/stale</li>
|
|
<li>Background cache updates (planned)</li>
|
|
<li><strong>Connectivity side-effect</strong>: each server request feeds the <code>ConnectivityMonitor</code>, which is the source of truth for the offline/online banner (see <a href="07-connectivity.html">07-connectivity.md</a>). A server-answered error (401/404/5xx) still counts as <em>reachable</em> — only network failures, sustained past a debounce window, flip the app to offline.</li>
|
|
</ul>
|
|
<h2 id="search-flow-locally-indexed"><a class="header" href="#search-flow-locally-indexed">Search Flow (Locally Indexed)</a></h2>
|
|
<p><strong>TRACES</strong>: UR-065 | DR-108 … DR-111, IR-030</p>
|
|
<p>Search does not depend on a per-keystroke round trip to Jellyfin. The instant leg
|
|
reads the <strong>local SQLite catalog</strong>, which is already synced and already
|
|
FTS5-indexed, so results appear as fast as SQLite can answer — online or offline.
|
|
The server query stays, demoted to a background reconciliation that merges in
|
|
late results.</p>
|
|
<pre><code class="language-mermaid">sequenceDiagram
|
|
participant UI as Search UI
|
|
participant Rust as repository_search
|
|
participant Cache as Local catalog (FTS5)
|
|
participant Server as Jellyfin
|
|
participant Indexer as spawn_catalog_indexer
|
|
|
|
UI->>Rust: search(query, scope)
|
|
Rust->>Cache: FTS5 query, scope expanded by SearchScope::item_types()
|
|
Cache-->>UI: instant results
|
|
Rust->>Server: reconciliation query (background)
|
|
Server-->>UI: search-event with late/merged results
|
|
Note over Indexer,Cache: Independent of any query:<br/>scheduled crawl keeps the index fresh,<br/>prunes items deleted on the server
|
|
</code></pre>
|
|
<p><strong>Key points:</strong></p>
|
|
<ul>
|
|
<li>The <strong>scope is opaque on the wire</strong>. The frontend sends a <code>SearchScope</code>
|
|
variant; Rust expands it to item types
|
|
(<a href="01-rust-backend.html#search-scope-and-the-taxonomy-boundary">01-rust-backend.md</a>).</li>
|
|
<li><strong>Index freshness is a Rust policy</strong>, not a frontend startup call — a scheduled
|
|
background pass, not "whatever was synced when the app last launched"
|
|
(DR-109). See
|
|
<a href="01-rust-backend.html#background-workers">Background workers</a>.</li>
|
|
<li><strong>Index hygiene matters as much as freshness</strong>: the catalog save path uses
|
|
<code>INSERT OR REPLACE</code> and the crawl prunes rows for content deleted on the
|
|
server, or search keeps returning items that no longer exist (DR-110).</li>
|
|
<li>The index covers <strong>exactly the types the result groups render</strong> (DR-111) —
|
|
including Artists, which the crawl must reach or the Artists group is silently
|
|
always empty.</li>
|
|
</ul>
|
|
<p><strong>Deliberately not done, with reasons:</strong></p>
|
|
<ul>
|
|
<li><strong>Incremental indexing</strong> (Jellyfin's <code>MinDateLastSaved</code>). A <em>full</em> crawl is
|
|
what makes the deletion sweep sound — it yields the authoritative id set per
|
|
library, and an incremental pass cannot detect deletions. Worth revisiting if
|
|
full crawls prove slow on large libraries; measure first.</li>
|
|
<li><strong>Removing the server leg.</strong> The reconciliation query stays.</li>
|
|
</ul>
|
|
<blockquote>
|
|
<p>⚠️ Two dead search implementations still exist: <code>storage_search_items</code>
|
|
(<code>commands/storage/mod.rs</code>) and <code>offline_search</code> (<code>commands/offline.rs</code>). Both
|
|
are registered in <code>lib.rs</code> and exported to <code>bindings.ts</code>; neither is called
|
|
from the frontend. Deleting them is correct and unclaimed.</p>
|
|
</blockquote>
|
|
<h2 id="playback-initiation-flow"><a class="header" href="#playback-initiation-flow">Playback Initiation Flow</a></h2>
|
|
<pre><code class="language-mermaid">sequenceDiagram
|
|
participant User
|
|
participant AudioPlayer
|
|
participant Tauri as Tauri IPC
|
|
participant Command as player_play_item()
|
|
participant Controller as PlayerController
|
|
participant Backend as PlayerBackend
|
|
participant Store as Frontend Store
|
|
|
|
User->>AudioPlayer: clicks play
|
|
AudioPlayer->>Tauri: invoke("player_play_item", {item})
|
|
Tauri->>Command: player_play_item()
|
|
Command->>Command: Convert PlayItemRequest -> MediaItem
|
|
Command->>Controller: play_item(item)
|
|
Controller->>Backend: load(item)
|
|
Note over Backend: State -> Loading
|
|
Controller->>Backend: play()
|
|
Note over Backend: State -> Playing
|
|
Controller-->>Command: Ok(())
|
|
Command-->>Tauri: PlayerStatus {state, position, duration, volume}
|
|
Tauri-->>AudioPlayer: status
|
|
AudioPlayer->>Store: player.setPlaying(media, position, duration)
|
|
Note over Store: UI updates reactively
|
|
</code></pre>
|
|
<h2 id="playback-mode-transfer-flow"><a class="header" href="#playback-mode-transfer-flow">Playback Mode Transfer Flow</a></h2>
|
|
<pre><code class="language-mermaid">sequenceDiagram
|
|
participant UI as Cast Button
|
|
participant Store as playbackMode store
|
|
participant Rust as Tauri Command
|
|
participant Manager as PlaybackModeManager
|
|
participant Player as PlayerController
|
|
participant Jellyfin as Jellyfin API
|
|
|
|
UI->>Store: transferToRemote(sessionId)
|
|
Store->>Rust: invoke("playback_mode_transfer_to_remote", {sessionId})
|
|
Rust->>Manager: transfer_to_remote()
|
|
|
|
Manager->>Player: Get current queue
|
|
Player-->>Manager: Vec<MediaItem>
|
|
Manager->>Manager: Extract Jellyfin IDs
|
|
|
|
Manager->>Jellyfin: POST /Sessions/{id}/Playing<br/>{itemIds, startIndex}
|
|
Jellyfin-->>Manager: 200 OK
|
|
|
|
Manager->>Jellyfin: POST /Sessions/{id}/Playing/Seek<br/>{positionTicks}
|
|
Jellyfin-->>Manager: 200 OK
|
|
|
|
Manager->>Player: stop()
|
|
Manager->>Manager: mode = Remote {sessionId}
|
|
|
|
Manager-->>Rust: Ok(())
|
|
Rust-->>Store: PlaybackMode
|
|
Store->>UI: Update cast icon
|
|
</code></pre>
|
|
<h2 id="queue-navigation-flow"><a class="header" href="#queue-navigation-flow">Queue Navigation Flow</a></h2>
|
|
<pre><code class="language-mermaid">flowchart TB
|
|
User["User clicks Next"] --> Invoke["invoke('player_next')"]
|
|
Invoke --> ControllerNext["controller.next()"]
|
|
ControllerNext --> QueueNext["queue.next()<br/>- Check repeat mode<br/>- Check shuffle<br/>- Update history"]
|
|
|
|
QueueNext --> None["None<br/>(at end)"]
|
|
QueueNext --> Some["Some(next)"]
|
|
QueueNext --> Same["Same<br/>(repeat one)"]
|
|
|
|
Some --> PlayItem["play_item(next)<br/>Returns new status"]
|
|
</code></pre>
|
|
<h2 id="volume-control-flow"><a class="header" href="#volume-control-flow">Volume Control Flow</a></h2>
|
|
<pre><code class="language-mermaid">sequenceDiagram
|
|
participant User
|
|
participant Slider as Volume Slider
|
|
participant Handler as handleVolumeChange()
|
|
participant Tauri as Tauri IPC
|
|
participant Command as player_set_volume
|
|
participant Controller as PlayerController
|
|
participant Backend as MpvBackend/NullBackend
|
|
participant Events as playerEvents.ts
|
|
participant Store as Player Store
|
|
participant UI
|
|
|
|
User->>Slider: adjusts (0-100)
|
|
Slider->>Handler: oninput event
|
|
Handler->>Handler: Convert 0-100 -> 0.0-1.0
|
|
Handler->>Tauri: invoke("player_set_volume", {volume})
|
|
Tauri->>Command: player_set_volume
|
|
Command->>Controller: set_volume(volume)
|
|
Controller->>Backend: set_volume(volume)
|
|
Backend->>Backend: Clamp to 0.0-1.0
|
|
Note over Backend: MpvBackend: Send to MPV loop
|
|
Backend-->>Tauri: emit "player-event"
|
|
Tauri-->>Events: VolumeChanged event
|
|
Events->>Store: player.setVolume(volume)
|
|
Store-->>UI: Reactive update
|
|
Note over UI: Both AudioPlayer and<br/>MiniPlayer stay in sync
|
|
</code></pre>
|
|
<p><strong>Key Implementation Details:</strong></p>
|
|
<ul>
|
|
<li>Volume is stored in the backend (NullBackend/MpvBackend)</li>
|
|
<li><code>PlayerController.volume()</code> delegates to backend</li>
|
|
<li><code>get_player_status()</code> returns <code>controller.volume()</code> (not hardcoded)</li>
|
|
<li>Frontend uses normalized 0.0-1.0 scale, UI shows 0-100</li>
|
|
</ul>
|
|
|
|
</main>
|
|
|
|
<nav class="nav-wrapper" aria-label="Page navigation">
|
|
<!-- Mobile navigation buttons -->
|
|
<a rel="prev" href="../architecture/02-svelte-frontend.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
|
<i class="fa fa-angle-left"></i>
|
|
</a>
|
|
|
|
<a rel="next prefetch" href="../architecture/04-type-sync-and-threading.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
|
<i class="fa fa-angle-right"></i>
|
|
</a>
|
|
|
|
<div style="clear: both"></div>
|
|
</nav>
|
|
</div>
|
|
</div>
|
|
|
|
<nav class="nav-wide-wrapper" aria-label="Page navigation">
|
|
<a rel="prev" href="../architecture/02-svelte-frontend.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
|
<i class="fa fa-angle-left"></i>
|
|
</a>
|
|
|
|
<a rel="next prefetch" href="../architecture/04-type-sync-and-threading.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
|
<i class="fa fa-angle-right"></i>
|
|
</a>
|
|
</nav>
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<script>
|
|
window.playground_copyable = true;
|
|
</script>
|
|
|
|
|
|
<script src="../elasticlunr.min.js"></script>
|
|
<script src="../mark.min.js"></script>
|
|
<script src="../searcher.js"></script>
|
|
|
|
<script src="../clipboard.min.js"></script>
|
|
<script src="../highlight.js"></script>
|
|
<script src="../book.js"></script>
|
|
|
|
<!-- Custom JS scripts -->
|
|
|
|
|
|
</div>
|
|
</body>
|
|
</html>
|