flutter_handbreak 0.3.1

Lightweight Flutter video & image compression inspired by HandBrake — quality-first, hardware-accelerated, any-format fallback. Easy one-liner API with presets & progress.

Changelog

0.3.1 — 2026-08-23 (audit v3: crash & concurrency hardening)

• Android: semaphore no longer acquired on the main thread (ANR fix) — queued jobs wait on the worker.
• Android: probe + capabilities moved off the platform thread; engine detach now cancels running jobs.
• Android: audio transcode never drops decoded PCM (retry-until-fed, cancellation-aware).
• Android: negative/non-monotonic PTS normalized before mux (MediaMuxer rejection fix).
• Android: half-created decoder released on configure failure (no leak).
• Android: job-scoped temp files (output.hbtmp.<jobId>) — no cross-job collision.
• Android/iOS: requested HEIC/AVIF that a device cannot encode now falls back to JPEG and reports it (qualityWarning) instead of silently lying about the codec.
• iOS: image decode no longer loads the entire file into memory (URL-based ImageIO source).
• iOS: job task access synchronized (TSAN race fixed); duration validation parity with Android.
• iOS: capabilities probe moved off the main thread.
• Formal job state machine on both natives; state surfaced in progress payloads.
• Dart: probe + capabilities resolved in parallel.

0.3.0 — 2026-08-23

• Rename package to flutter_handbreak (keep handbreak.dart alias for compatibility)
• Add lightweight FlutterHandbreak facade: compressVideo(path, quality: 80, preset: ...) one-liner
• HandBrake-inspired credit banner + funding metadata for pub.dev
• Exclude internal docs (PRODUCTION_REVIEW) from published archive — clean open-source
• Fix facade unused import, example dependency rename

0.2.0 — 2026-08-22 (production hardening)

Full audit of v0.2 hardening (internal, not shipped).

Architecture

• EncodePlanResolver: all encode policy (dimensions, fps gate, container fallback, rate control, hardware decision, audio plan, filter ordering) resolved once in pure Dart with 30+ unit tests; natives execute the plan instead of re-deriving heuristics.

Fixed

• Android: audio was dropped entirely → now passthrough or AAC-LC transcode, PTS-interleaved.
• Android: framerate gate corrupted bitstream (empty-buffer queue) → decoder-output PTS gate, drop-only, deterministic.
• Android: byte-buffer fallback was a silent hang stub → real YUV_420_888→NV12 converter (semi-planar + planar strides) feeding encoder.
• iOS: Swift would not compile (inout-capture handler, missing UIKit import) → clean rewrite across Support/HardwareProbe/MediaProbe/JobManager/pipelines; typechecks on iOS SDK.
• iOS: EXIF orientation computed but ignored → transform-aware thumbnail decode (all 8 cases).
• iOS: fake usedHardwareAcceleration → real VTCompressionSession hardware-required probes; unenforceable softwareOnly recorded honestly in result notes.
• MKV/WebM requests that mobile muxers cannot write now fall back to MP4 with an explicit note in qualityWarning instead of failing at mux time.
• Dart: ImageCompressor.compress typed result; platform registration via ensureInitialized() (no private-class sniffing); progress streams self-terminate (no leak).
• Hardware-decode capability no longer counts non-video decoders.

Added

• Container/audio/hardware fallback matrix with surfaced notes (ResolvedPlan).
• Stall watchdog on Android pipeline (fails loudly after 30 s without progress).
• Tests: resolver fallbacks, filter canonical order, validation helpers, error-code parity.

0.1.0 — 2026-08-22

• Initial release, Phase 1.
• Dart API: VideoCompressor / ImageCompressor, HandbreakProbe, presets, quality mapper, hardware detection abstraction.
• Android: MediaExtractor probe, MediaCodec encode (H.264), MediaMuxer, Bitmap image path, JobManager with cancellation & temp cleanup, progress via EventChannel.
• iOS: AVFoundation/VideoToolbox pipeline, ImageIO/CoreGraphics image path, JobManager.
• Docs: ARCHITECTURE.md (HandBrake analysis), THIRD_PARTY_LICENSES, example app, benchmark harness.