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ad-repo/nullplayer

Instructions file CodexOpenCode

AGENTS.md instructions for ad-repo/nullplayer: See CLAUDE.md for documentation, key source files, and development guidelines.

ad-repo/nullplayer

Instructions file

Claude Code instructions for ad-repo/nullplayer, covering agent guide, quick start, documentation, architecture and key source files.

ad-repo/nullplayer

Skill Claude CodeCodex

The Library Browser ART-mode visualizer — 30 Core Image GPU effects that transform album artwork based on audio. Use when adding/editing visualizer effects, intensity, keyboard shortcuts, or the ART-mode lifecycle.

ad-repo/nullplayer

Skill Claude CodeCodex

The classic and modern Audio Analyzer windows — a Friture-style multi-pane analyzer (Scope, Levels, Spectrogram, Octave, Pitch, Delay), the stereo PCM path that feeds them, per-pane consumer gating, and the shared AudioAnalysisDSP module. Use when modifying either analyzer window, its panes, the spectrogram shader, or…

ad-repo/nullplayer

Skill Claude CodeCodex

Audio engine architecture, local/streaming pipelines, EQ, spectrum analysis, and playback flow. Use when working on audio playback, streaming, equalization, spectrum visualization, BPM detection, or ProjectM integration.

ad-repo/nullplayer

Skill Claude CodeCodex

Implementation and maintenance guide for NullPlayer's standalone and embedded Cava spectrum analyzers, including DSP, rendering, scoped settings, skin-following colors, resets, UI-family switches, and window lifecycle.

ad-repo/nullplayer

Skill Claude CodeCodex

Google Cast Protocol v2, message framing, debugging, and test scripts. Use when working on Chromecast casting, debugging Cast protocol issues, or implementing Cast commands.

ad-repo/nullplayer

Skill Claude CodeCodex

Headless CLI mode for NullPlayer. Use when working on CLI features, arguments, playback control, query commands, source resolution, or terminal display. Covers architecture, all flags, keyboard controls, and source APIs.

ad-repo/nullplayer

Skill Claude CodeCodex

.cue sheet support — direct-play virtual split (open a .cue or an audio file with a sibling .cue → N playlist rows from one backing file, gapless) and library physical split-on-import (ffmpeg per-track files, off by default). Use when working on cue parsing, the AudioEngine cue boundary detector, in-file offset…

ad-repo/nullplayer

Skill Claude CodeCodex

Emby API, authentication flow, rating scale, streaming, scrobbling, and video playback. Use when working on Emby integration, library browsing, playback reporting, or video casting.

ad-repo/nullplayer

Skill Claude CodeCodex

Flow network throughput window — live download/upload meter, interface selection, single-height center-stack docking, classic/modern window controllers, and rendering behavior.

ad-repo/nullplayer

Skill Claude CodeCodex

Implementation reference for NullPlayer's Geiss visualization engine — the BSD-3-Clause port of Ryan Geiss's Win32/DirectDraw/Winamp-2 visualizer onto macOS as a ProjectM-peer engine. Covers the CGeissCore C ABI, upstream-vs-port file split, indexed-framebuffer + palette-LUT render pipeline, Accelerate-based spectrum…

ad-repo/nullplayer

Skill Claude CodeCodex

Per-mode shader and algorithm internals for the GPU visualization modes shared by both the main window and spectrum window — Fire, JWST, Lightning, Matrix, Snow, EKG. Includes Metal pass counts, audio mappings, color schemes, intensity presets, and the shader file names. Use when editing a specific mode's shader or…

ad-repo/nullplayer

Skill Claude CodeCodex

Jellyfin API, authentication flow, rating scale, streaming, scrobbling, and video playback. Use when working on Jellyfin integration, library browsing, playback reporting, or video casting.

ad-repo/nullplayer

Skill Claude CodeCodex

Reference for local media library: scanning, persistence, NAS responsiveness, and display-layer queries.

ad-repo/nullplayer

Skill Claude CodeCodex

The main window's built-in 76×16 (Winamp coordinates) visualization area — twelve display modes, mode switching, persistence, per-mode settings, and embedded renderer lifecycles. Use when modifying the in-skin visualizer area or its menu.

ad-repo/nullplayer

Skill Claude CodeCodex

The Met Museum Open Access slideshow engine — controls, persistence keys, throttled API client, disk image cache, empty-department handling, audio reactivity hooks. Use when modifying the Met Museum engine, its menu, the API client, or the image cache.

ad-repo/nullplayer

Skill Claude CodeCodex

Cross-cutting Metal pitfalls in NullPlayer's visualization code — command encoder ordering, render-to-texture y-flip, shader availability checks, and the AudioEngine spectrum coalescing pattern that fixes Classic/Spectrum bar stuttering. Use when writing Metal pipelines or chasing visualizer jitter/crash bugs.

ad-repo/nullplayer

Skill Claude CodeCodex

Modern skin engine, skin.json schema, element catalog, and custom skin creation. Use when creating or modifying modern skins, working on ModernSkin components, or adding UI elements to the modern system.

ad-repo/nullplayer

Skill Claude CodeCodex

Non-Retina display artifact fixes, blue line issues, tile seam corrections, and targeted redraw optimizations. Use when debugging rendering issues on 1x displays or working on skin rendering code.

ad-repo/nullplayer

Skill Claude CodeCodex

The PeppyMeter analog VU meter window — a skinnable needle/bar meter (port of project-owner/PeppyMeter) in classic + modern UI. Covers the meters.txt geometry, the CoreGraphics compositor (needle rotation + linear masks), the stereo-tap level model, meter selection/random, bundled GPL assets, and WindowManager…

ad-repo/nullplayer

Skill Claude CodeCodex

Plex API endpoints, authentication, filtering, music radio, and video content. Use when working on Plex integration, library browsing, track queries, radio features, or video playback.

ad-repo/nullplayer

Skill Claude CodeCodex

ProjectM/MilkDrop preset engine inside the visualization window — preset loading, controls, modes, audio sensitivity, beat sensitivity, drag-suspend behavior. Use when editing the ProjectM wrapper, preset folder logic, or its menu.

ad-repo/nullplayer

Skill Claude CodeCodex

Internet radio (Shoutcast/Icecast), metadata fallback, auto-reconnect, ratings/folder organization, and casting. Also covers Library Browser radio mode for Subsonic, Jellyfin, Emby, Plex, and local library (smart playlist generation, history filtering, history pages). Use when working on radio station playback…