Switch to Symphonia. by mdwn · Pull Request #148 · mdwn/mtrack

mdwn · 2026-01-27T04:29:40Z

The backing decoder has been switched to Symphonia which supports many more file formats than just WAV.

Closes #10

Note

Replaces WAV-only decoding with a Symphonia-based pipeline and updates config, IO, and docs accordingly.

Introduces AudioSampleSource (Symphonia) and removes WavSampleSource; factory now accepts start_time and buffer_size and returns generic sources; unifies errors under SampleSourceError.
Supports WAV, MP3, FLAC, OGG/Vorbis, AAC, ALAC/M4A; examples and README updated to reflect new formats and behavior; licensure excludes additional audio extensions.
Adjusts channel-mapping/transcoding path to work with generic sources; keeps resampling via AudioTranscoder when format differs.
Configuration: removes buffer_threshold; repurposes audio.buffer_size as decoded-sample buffer; CPAL and song loading paths updated to use new factory/signature.
Logging: enables tracing-subscriber with env-filter and defaults to off,mtrack=info to reduce Symphonia noise.
Adds comprehensive tests for integer scaling and decoding across formats; moves hound to dev-dependencies; updates Cargo to include symphonia.

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src/audio/sample_source/audio.rs

src/main.rs

src/audio/sample_source/channel_mapped.rs

src/audio/sample_source/audio.rs

src/audio/sample_source/channel_mapped.rs

src/audio/sample_source/audio.rs

src/main.rs

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src/audio/sample_source/audio.rs

The backing decoder has been switched to Symphonia which supports many more file formats than just WAV.

mdwn force-pushed the switch-to-symphonia branch from acbd36c to c751ccf Compare January 27, 2026 15:41