Decompress()

unsafe OperationStatus System.IO.Compression.BrotliDecoder.Decompress ( ReadOnlySpan< byte > source, Span< byte > destination, out int bytesConsumed, out int bytesWritten )

inline

Definition at line 45 of file BrotliDecoder.cs.

    {
        EnsureInitialized();
        bytesConsumed = 0;
        bytesWritten = 0;
        if (global::Interop.Brotli.BrotliDecoderIsFinished(_state) != 0)
        {
            return OperationStatus.Done;
        }
        nuint availableOut = (nuint)destination.Length;
        nuint availableIn = (nuint)source.Length;
        while ((int)availableOut > 0)
        {
            fixed (byte* ptr = &MemoryMarshal.GetReference(source))
            {
                byte* ptr2 = ptr;
                fixed (byte* ptr3 = &MemoryMarshal.GetReference(destination))
                {
                    byte* ptr4 = ptr3;
                    UIntPtr totalOut;
                    int num = global::Interop.Brotli.BrotliDecoderDecompressStream(_state, ref availableIn, &ptr2, ref availableOut, &ptr4, out totalOut);
                    if (num == 0)
                    {
                        return OperationStatus.InvalidData;
                    }
                    bytesConsumed += source.Length - (int)availableIn;
                    bytesWritten += destination.Length - (int)availableOut;
                    switch (num)
                    {
                    case 1:
                        return OperationStatus.Done;
                    case 3:
                        return OperationStatus.DestinationTooSmall;
                    }
                    source = source.Slice(source.Length - (int)availableIn);
                    destination = destination.Slice(destination.Length - (int)availableOut);
                    if (num == 2 && source.Length == 0)
                    {
                        return OperationStatus.NeedMoreData;
                    }
                }
            }
        }
        return OperationStatus.DestinationTooSmall;
    }

References System.IO.Compression.BrotliDecoder._state, System.destination, System.IO.Compression.BrotliDecoder.EnsureInitialized(), and System.source.

Referenced by System.IO.Compression.BrotliStream.TryDecompress().