mpv_audio_kit 0.1.0

Flutter audio player built on top of libmpv. Supports audio filters, pitch control, equalizer, and all mpv audio features. Targets macOS, Windows, Linux, iOS and Android.

0.1.0 5-05-2026

Major release. The Dart API has been redesigned for type safety, ergonomics, and atomic state mutations.

Added

• A new AudioEffects bundle covering equalizer, compressor, loudness, pitch, tempo, bass, treble, stereo width, headphone crossfeed, silence trim, and raw lavfi effects applied atomically through one setter.
• A-B loop and chapter navigation.
• Aggregate playback-state stream (idle, loading, buffering, playing, paused, completed) for one-line UI bindings.
• 20+ new observable streams covering timing, file metadata, cache, demuxer, and version info.
• Typed Hook enum for the file-loading lifecycle.
• New MpvPrefetchState.failed variant for when background prefetch fails.
• Typed errors via the MpvPlayerError hierarchy and a public MpvException for raw-API failures.
• Real-time FFT spectrum and raw PCM streams (Player.stream.spectrum / Player.stream.pcm) captured post-DSP for visualizers.
• setTlsCaFile(path) with custom root-CA bundle.

Changed

• DSP effects, ReplayGain, and cache settings now live in atomic config objects applied in one call instead of multiple granular setters.
• Track selection, format, channel layout, S/PDIF passthrough, log levels, and hooks are now typed enums and sealed classes instead of free-form strings.
• Embedded cover art is exposed as raw codec bytes through a dedicated state.coverArt + stream.coverArt pair, with Flutter conveniences (art.image returns an ImageProvider, plus art.extension, art.isPng, art.isJpeg, …).
• setAudioDisplay, setImageDisplayDuration, and the Display enum are removed - they controlled mpv's video pipeline, which the audio-only build no longer ships. Cover bytes are surfaced regardless via state.coverArt.
• Raw-API escape hatches (getRawProperty, setRawProperty, sendRawCommand) are now Future<...> and surface mpv-side errors as MpvException instead of silently no-oping. getRawProperty still returns null on failure.
• Every typed setter (setVolume, setRate, setAudioEffects, setCache, …) now throws MpvException when mpv rejects the write, instead of silently advancing the optimistic state.
• Player.openPlaylist renamed to Player.openAll (matches Dart's addAll / removeAll convention).
• See the Migration section in the README for the full 0.0.9 → 0.1.0.

Fixed

• The initial player state (volume, format, channels, params, …) is now reliably populated before the first await. A startup race could previously leave one or more state fields at their default until the next user-driven setter.
• Calling dispose() immediately after construction no longer throws.
• Player instances that get garbage-collected without an explicit dispose() now release their native handle automatically. Always prefer await player.dispose(); this is just a safety net.
• Player.dispose() completes in milliseconds instead of falling through a 2-second timeout.
• HTTP headers no longer leak across open() calls; per-file headers stay scoped to their Media.
• Android content:// file descriptors are released on aborted loads, including when an openAll([...]) fails mid-batch.
• state.coverArt now mirrors the latest stream.coverArt emit synchronously (was permanently null despite being documented).
• print(state) and print(audioEffects) now render the actual values instead of placeholder text.
• Hot-Restart cleanup is hardened against false positives so a long-lived dev process can't have it trip on memory belonging to other tools.
• Several correctness fixes around playlist equality, hook idempotency, cache precision, and lifecycle stream synchronisation.
• HTTPS streams now connect on Android out of the box; previously TLS verification had no trust roots and every handshake failed.

Example

• Spectrum visualizer in the Player tab driven by Player.stream.spectrum, plus a Settings page exposing every SpectrumSettings knob (FFT size, window, band count, range, emit rate, attack, release smoothing, dB range) for live exploration.
• Filters page reorganised into category sub-pages covering every filter shipped with the build, plus a dedicated 18-band visualizer for superequalizer.

Build

• Patched prefetch to also support .failed state.
• Patched audio output state to report AO immediately.
• Patched audio frames to extract PCM streams (visualizer).
• Fixed Android audiotrack driver not working.
• Bundled libmpv binaries reduced by ~55% (e.g. macOS 29 MB → 13 MB).
• Bumped minimum deployment targets to iOS 15.0 and macOS 12.0.
• iOS Simulator is now Apple Silicon only (dropped x86_64).
• Added arm64 support for Linux and Windows.
• Updated libmpv to libmpv-r5 across all platforms.

0.0.9 27-04-2026

Fixed

• Lifecycle streams (stream.playing / stream.buffering / stream.completed) silently desynced from state on file boundaries - stream.completed never fired on natural EOF and stream.buffering never emitted at all. All three now stay in sync with state across every lifecycle transition.
• dispose() leaked four stream controllers (audio display, cover-art auto, image display duration, prefetch state). All now closed on teardown.
• Use-after-dispose hazards on open() / openPlaylist(): disposing the player while URI normalisation was still in flight could SIGSEGV on Android intent:// loads. Added disposed re-checks after every async boundary.
• Defensive disposal guards on the position polling and embedded-cover pipelines so in-flight work bails instead of writing to closed controllers.
• setEqualizerGains() now respects the disposal contract.
• setAudioFilters() and setEqualizerGains() now route state mutation through the same path as every other setter.
• openPlaylist(medias, index: N) no longer silently no-ops when N >= medias.length; the index is clamped to medias.length - 1.

Changed

• Reordered the dispose() teardown sequence so the event loop exits cleanly without ever calling mpv_wait_event on a freed handle.

0.0.8 24-04-2026

Added

• stream.prefetchState - observable lifecycle of mpv's background playlist-prefetch (MpvPrefetchState: idle, loading, ready, used).
• stream.seekCompleted - authoritative "seek finished" signal that fires exactly once per seek or initial file load.

Changed

• on_load hook now runs for prefetched tracks, so custom URL schemes resolve uniformly whether mpv is opening the current track or pre-opening the next one.
• DASH segment downloads now reuse a single TCP connection across segment GETs (matches HLS persistent-HTTP behaviour).

Fixed

• Spurious position = 0 no longer emits on stream.position during seek / playback-restart.
• Audible click at every segment boundary on well-formed fragmented-MP4 / DASH streams (AAC encoder priming edit lists are now respected on fMP4).

Example

• Rewrote the seek slider to release its drag value via stream.seekCompleted instead of a fixed delay.

Build

• Updated libmpv binaries to libmpv-r4 across all platforms.

0.0.7 12-04-2026

Changed

• audio-format (u8, s16, s32, float, etc.) now accepts "no" and "" for instant reset to default - previously a full player restart was required.

Example

• Updated deprecated APIs that prevented the example app from running.

Build

• Updated libmpv binaries to libmpv-r3 across all platforms.

0.0.6 08-04-2026

Added

• SMB2/3 protocol support (smb2://) for Samba (CIFS) network shares via libsmb2.
• Typed error stream - Stream<MpvPlayerError> (sealed: MpvEndFileError, MpvLogError) replaces Stream<String>.
• stream.endFile (MpvFileEndedEvent) for all file-end events, including premature EOF detection.
• stream.pausedForCache and stream.demuxerViaNetwork for network state monitoring.
• Optional timeout parameter on registerHook for automatic safety continuation.

Fixed

• Incorrect name for the audio-stream-silence property.

Build

• Updated libmpv binaries from libmpv-r1 to libmpv-r2 across all platforms.

0.0.5+1 30-03-2026

Docs

• Improved README documentation.

0.0.5 24-03-2026

Added

• Stream hooks API (registerHook, continueHook, player.stream.hook) to intercept mpv's file-loading pipeline.

Docs

• README fixes and consistency improvements.

0.0.4 23-03-2026

Added

• New APIs to configure embedded and external cover-art handling: setAudioDisplay, setCoverArtAuto, setImageDisplayDuration.

Changed

• Fast jump into playlist now automatically starts playback.

Example

• Refined Queue tab design and improved stability.
• Added new sliders to DSP filters.

0.0.3+2 21-03-2026

Fixed

• Minor fixes.

0.0.3+1 21-03-2026

Build

• New tag system for versioning libmpv binaries (libmpv-r1, libmpv-r2, …) to avoid conflicts with the pub version number on GitHub Releases.

0.0.3 21-03-2026

Changed

• Linux: bumped minimum supported OS version to Ubuntu 24.04 - required because mpv 0.41.0 enforces a strict dependency on libpipewire-0.3 >= 0.3.57 for its native PipeWire backend.

Docs

• Added a detailed Troubleshooting section in the README explaining how to correctly satisfy Linux system dependencies when building on containers.

Example

• Fixed AO menu not showing the default driver automatically.

0.0.2+3 20-03-2026

Build

• Updated Linux libmpv: ALSA, PipeWire, and PulseAudio now all work without external dependencies.

0.0.2+2 18-03-2026

Changed

• Cleaned up files.

0.0.2+1 17-03-2026

Fixed

• Minor fixes.

0.0.2 17-03-2026

Added

• Extended documentation.

Changed

• Restructured the example app's settings UI: each mpv property has its own dedicated page; the stream lab moved to main navigation.

Fixed

• File picker on macOS.
• Other audio-engine fixes.

0.0.1+9 16-03-2026

Added

• New option to choose the AO driver in the example app.
• Added audio_service to the example app to test the native OS audio controls.

Changed

• Re-added the audiounit driver alongside avfoundation in libmpv for iOS - audio_service now works with both.

0.0.1+8 16-03-2026

Changed

• Removed the audiounit driver from libmpv to fix the native iOS widget for audio control when using the audio_service library.

Fixed

• File picker error in the example app.

0.0.1+7 16-03-2026

Fixed

• macOS libs build.

0.0.1+6 15-03-2026

Fixed

• Shuffle bug.

0.0.1+5 15-03-2026

Fixed

• Minor fixes.

0.0.1+4 15-03-2026

Fixed

• Minor fixes.

0.0.1+3 15-03-2026

Fixed

• Minor fixes.

0.0.1+2 15-03-2026

Fixed

• Minor fixes.

0.0.1+1 15-03-2026

Added

• Swift Package Manager support for iOS and macOS.

Fixed

• Broken image links on pub.dev (now use absolute GitHub URLs).
• All static analysis warnings; enforced curly braces in flow control structures.

0.0.1 15-03-2026

Added

• Initial release. High-performance audio library for Flutter powered by libmpv v0.41.0.
• Cross-platform support: iOS, Android, macOS, Windows, and Linux.
• Comprehensive example app demonstrating DSP, hardware routing, and queue management.