NAudio.Wave.WaveFormat.FromFormatChunk C# (CSharp) Method

        public static WaveFormat FromFormatChunk(BinaryReader br, int formatChunkLength)
        {
            WaveFormatExtraData waveFormat = new WaveFormatExtraData();
            waveFormat.ReadWaveFormat(br, formatChunkLength);
            waveFormat.ReadExtraData(br);
            return waveFormat;
        }

        /// <summary>
        /// Reads the header part of a WAV file from a stream
        /// </summary>
        /// <param name="stream">The stream, positioned at the start of audio data</param>
        /// <param name="format">The format found</param>
        /// <param name="dataChunkPosition">The position of the data chunk</param>
        /// <param name="dataChunkLength">The length of the data chunk</param>
        /// <param name="chunks">Additional chunks found</param>
        public static void ReadWaveHeader(Stream stream, out WaveFormat format, out long dataChunkPosition, out int dataChunkLength, List <RiffChunk> chunks)
        {
            dataChunkPosition = -1;
            format            = null;
            BinaryReader br = new BinaryReader(stream);

            if (br.ReadInt32() != WaveInterop.mmioStringToFOURCC("RIFF", 0))
            {
                throw new FormatException("Not a WAVE file - no RIFF header");
            }
            uint fileSize = br.ReadUInt32(); // read the file size (minus 8 bytes)

            if (br.ReadInt32() != WaveInterop.mmioStringToFOURCC("WAVE", 0))
            {
                throw new FormatException("Not a WAVE file - no WAVE header");
            }

            int dataChunkID   = WaveInterop.mmioStringToFOURCC("data", 0);
            int formatChunkId = WaveInterop.mmioStringToFOURCC("fmt ", 0);

            dataChunkLength = 0;

            // sometimes a file has more data than is specified after the RIFF header
            long stopPosition = Math.Min(fileSize + 8, stream.Length);

            // this -8 is so we can be sure that there are at least 8 bytes for a chunk id and length
            while (stream.Position <= stopPosition - 8)
            {
                Int32 chunkIdentifier = br.ReadInt32();
                Int32 chunkLength     = br.ReadInt32();
                if (chunkIdentifier == dataChunkID)
                {
                    dataChunkPosition = stream.Position;
                    dataChunkLength   = chunkLength;
                    stream.Position  += chunkLength;
                }
                else if (chunkIdentifier == formatChunkId)
                {
                    format = WaveFormat.FromFormatChunk(br, chunkLength);
                }
                else
                {
                    if (chunks != null)
                    {
                        chunks.Add(new RiffChunk(chunkIdentifier, chunkLength, stream.Position));
                    }
                    stream.Position += chunkLength;
                }
            }

            if (format == null)
            {
                throw new FormatException("Invalid WAV file - No fmt chunk found");
            }
            if (dataChunkPosition == -1)
            {
                throw new FormatException("Invalid WAV file - No data chunk found");
            }
        }