Changelog

All notable changes to this project will be documented in this file. See commit-and-tag-version for commit guidelines.

4.2.2 (2025-11-19)

Bug Fixes

• FFmpeg not loading files with UTF8 chars in name (9df72a0)
• file changes not considered by proxies (037f98b)
• incomplete native error message (2b6248c)
• stream reading stuck at the end (103e32f)
• use of incomplete proxy files (69ca6e1)

4.2.1 (2024-01-30)

Bug Fixes

• FFmpeg end-of-stream handling breaks stream contract (c18b299)
• FFmpeg sometimes seeks one frame too far (8d33d6a)
• initial position not zero when first PTS not zero (8867464)
• wrongly accepted first PTS when file not seekable (4c16721)

4.2.0 (2024-01-27)

Features

• bump FFmpeg to 6.1.1 (#21) (b6ccac2)
• direct audio proxy file writing (#25) (2d531d0)
• improve FFmpeg seeking (#26) (682cf2d)
• read FFmpeg samples without intermediary buffer (#23) (316cf4d)

Bug Fixes

• exception on FFmpeg proxy file creation (#22) (ba619ab)
• infinite read loop at end of FFmpeg stream (#24) (6a99a85)

4.1.0 (2023-12-09)

Features

• bump Soxr to 0.1.3 (5908909)
• validate availability of native Windows libraries (55db90b)

4.0.0 (2023-12-07)

Features

• upgrade to .NET 6
• faster fingerprint matching
• custom audio proxy files
• PeakPairsGenerated event
• draw peak pairs into spectrogram
• Aurio core cross-platform support
• Aurio.Windows for Windows dependencies
• FFT benchmarking application
• FftSharp integration
• FFmpeg Linux support
• remove unnecessary .NET Core test application
• remove x86 support
• upgrade FFmpeg to 6.0
• Wang guessed settings profile
• WdlResampler flushing
• support skipping missing files when loading project
• DummyAudioTrack as placeholder for missing backing file
• custom audio proxy files
• create Interval from TimeSpans
• optional progress callback on MatchProcessor.WindowFilter
• FFTUtil.CalculateFrequencyBinIndex
• trigger progress events only if there is actual progress to report
• Aurio.FFmpeg.Test cross-platform support and dry-run mode
• periodic Hamming, sine, periodic sine windows
• consolidate window parameters in WindowConfig
• StreamUtil.Read* bytes or samples to array
• square-root windows
• FFTUtil.CalculateNextPowerOf2 and IsPowerOf2
• create memory source stream from sample array
• DCOffsetStream
• FixedLengthFifoStream
• use wave view with stream instead of track
• overlap-add visualizer

Bug Fixes

• analysis of multiple files
• audio stream creation without proxy
• silent spectrum frames not drawn
• incorrect stream windower last frame detection
• missing waveform view after reload
• progress event without reported progress
• status message update before ProcessingStarted event
• stream factory not accessible
• update peak file when audio file has changed
• wave controls rendered empty
• status message update before ProcessingStarted event
• progress events without reported progress
• periodic Hann window incorrectly applied
• misleading representation of clipped samples by bitmap waveform renderer

2018-12-04 d01cb3f

• Introduced IAudioStreamFactory pattern that allows to register external audio stream factories in AudioStreamFactory to read streams
• Removed FFmpeg dependency from core
  • Moved FFmpegSourceStream to Aurio.FFmpeg
  • Added FFmpegAudioStreamFactory to Aurio.FFmpeg
• Updated test apps and tools with factory initializations

2018-03-22 5af5339

• Converted all Aurio library packages to .NET Standard 2.0 for .NET Core 2.0 compatibility
  • Updated WPF GUI apps from NET Framework 4.0 to 4.6.2 for .NET Standard 2.0 compatibility
  • Requires Visual Studio 2017
• Added support for realtime (live) stream processing
  • CircularMemoryWriterStream with read and write support of audio data into a circular buffer
  • BlockingFixedLengthFifoStream with blocking read and write support of audio data into a fixed-length FIFO buffer (converts pull-based stream processing into a push-based approach suitable for realtime applications)
  • Aurio.Test.RealtimeFingerprinting: .NET Core realtime audio fingerprinting example/demo app
• Removed resampler dependency from core
  • Added Aurio.Resampler.ResamplerFactory that can be configured with various resampler implementations
  • Implemented ResamplerFactory for NAudio WdlResampler (managed code, recommended for .NET Core cross-plattform deployment), LibSampleRate, and Soxr (recommended for quality and speed)
• Removed FFT dependency from core
  • Added Aurio.FFT.FFTFactory that can be configured with various FFT implementations
  • Implemented FFTFactory for Exocortex.DSP (managed code, recommended for .NET Core cross-plattform deployment), FFTW, and PFFFT (recommended for quality and speed)
• Moved SQLite dependency (SQLiteCollisionMap) from core to optional Aurio.Matching.SQLite package
• Added FingerprintStore.FindMatchesFromExternalSubFingerprints to match external fingerprints with the contents of a store
• Parameterized StreamWindower/STFT/FingerprintGenerator buffer size (to minimize processing latency)
• Parameterized FingerprintGenerator update event interval
• Fixed FFmpeg postbuild library copy command

2017-10-15 14c7c92

• FFmpeg updated to 3.3.3
• SurroundDownmixStream for 4.0/5.1/7.1 to stereo downmixing
• Validate matches before executing alignment and throw exception when an invalid match sequence is detected
• Add progress callback to FingerprintStores match finder
• Various bug fixes

2017-02-06 3e703cd

• Complex type
• Various StreamWindower OutputFormats: Raw, Magnitudes, MagnitudesSquared, MagnitudesAndPhases, and Decibel
• Overlap-adder OLA
• Inverse STFT InverseSTFT
• Writable audio streams
  • IAudioWriterStream interface
  • MemoryWriterStream that writes audio to memory
• Aurio.WaveControls:
  • CaretOverlay, MultiplicationConverter migrated from AudioAlign
  • TrackMarkerOverlay to add markers with labels onto audio tracks
• Inverse FFT transformation in Aurio.PFFFT
• Concatenated AudioTracks (audio tracks consisting of multiple files)
• Seek indizes for FFmpeg input
  • Seek index support in Aurio.FFmpeg.Proxy and Aurio.FFmpeg's FFmpegReader
  • Automatic seek index generation in FFmpegSourceStream for streams that do not natively support seeking
• Windowing moved from STFT to StreamWindower
• NAudio updated to fix Windows 10 high CPU utilization during playback
• Various unit tests
• Many bug fixes, optimizations, and enhancements

2016-03-01 fe49ea5

• Support for Visual Studio 2015
• FFmpeg setup helper script
• FFmpeg updated to 2.8.2
• Decoding of various files formats through FFmpeg
  • Direct processing of audio from compressed formats and (video) containers
  • Video decoding (see Aurio.FFmpeg.Test program)
  • Automatic creation of wav proxy files for audio formats that don't allow seeking (shn, ape)
• Stream input support in FFmpeg decoder (required a file input before)
• Close-method and IDisposable implementation in audio streams to free resources
• Close all audio streams after use
• MultiStream to concatenate files/streams for decoding (e.g. vob files)
• Support additional video files (ts, mkv, mov) for automatic EDL export wav proxy replacement
• Fix release config postbuild event commands
• Fix FFmpeg proxy compile error in VS2013