CSCodec - .NET Standard Audio Codec Development Library

CSCodec is an open-source Audio Codec development library that has many features supporting development of your decoder and/or encoder for both your original or well-known formats.

Currently Implemented Features:

• Core Project is LICENSED UNDER Apache-2.0
• A lot of Span<T> Based APIs
• 24Bit Signed Integer Structure Int24
• An original Fast Fourier Transform (FFT) IMPLEMENTATION for System.Numerics.Complex arrays.
• A Discrete Cosine Transform (DCT) Type-IV for double and float based on FFT
• Wavelet Transform(Haar and CDF 5/3 Wavelets for now) for some types(double, float, int, Int24, short, sbyte)
• A Time-Domain Aliasing Cancellation (like in MDCT) support for some types(double, float)
• Hardware-Accelerated Add, Subtract, and Scalar Multiply for Arrays using System.Numerics.Vector<T>
• Bit Encoded Binary Data I/O
  • BitReader and BitWriter supports I/O of bit encoded binary data
• Cyclic Redundancy Check(CRC) of 8bits, 16bits, 32bits Support(Tested with some polynomials)
• Linear Prediction support for double and float using FFT when possible and appropriate

Features Under Development:

• Unit Tests for existing APIs
• Better Documentations for existing APIs

Planned Features:

• Linear Prediction support for int and long in order to implement FLAC Encoder and Decoder
• Binary Compression
  • Rice Coding
  • Huffman Coding
  • Arithmetic Coding without patents
    • Range Coder
• New type SingleComplex that supports float based Complex calculation
  • FFT for SingleComplex
• Parallelization for existing apis where possible and appropriate
• Unrounded Irreversible CDF 9/7 wavelet transform for double, float
• Rounded CDF 9/7 wavelet transform for int, Int24, short, and sbyte if possible and needed
• ID3 Tags Support

Project Goals:

• .NET Standard/Core/Frameworks, Mono, and Xamarin Support
• Inter-operation with MonoAudio(this part will be licensed under Ms-PL)
• Inter-operation with CSCore, NAudio, MonoGame, etc...(these parts will be licensed under Ms-PL)
• Reference Implementations of cross-platform FLAC Decoder and Encoder for both Samples and Uses.