public static Stream AsStream(this IBuffer source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
Contract.Ensures(Contract.Result <Stream>() != null);
Contract.Ensures(Contract.Result <Stream>().Length == (UInt32)source.Capacity);
Contract.EndContractBlock();
Byte[] dataArr;
Int32 dataOffs;
if (source.TryGetUnderlyingData(out dataArr, out dataOffs))
{
Debug.Assert(source.Capacity < Int32.MaxValue);
return(new MemoryStream(dataArr, dataOffs, (Int32)source.Capacity, true));
}
unsafe
{
IBufferByteAccess bufferByteAccess = (IBufferByteAccess)source;
return(new WindowsRuntimeBufferUnmanagedMemoryStream(source, (byte *)bufferByteAccess.GetBuffer()));
}
}
public static bool IsSameData(this IBuffer buffer, IBuffer otherBuffer)
{
if (buffer == null)
{
throw new ArgumentNullException(nameof(buffer));
}
Contract.EndContractBlock();
if (otherBuffer == null)
{
return(false);
}
if (buffer == otherBuffer)
{
return(true);
}
Byte[] thisDataArr, otherDataArr;
Int32 thisDataOffs, otherDataOffs;
bool thisIsManaged = buffer.TryGetUnderlyingData(out thisDataArr, out thisDataOffs);
bool otherIsManaged = otherBuffer.TryGetUnderlyingData(out otherDataArr, out otherDataOffs);
if (thisIsManaged != otherIsManaged)
{
return(false);
}
if (thisIsManaged)
{
return((thisDataArr == otherDataArr) && (thisDataOffs == otherDataOffs));
}
IBufferByteAccess thisBuff = (IBufferByteAccess)buffer;
IBufferByteAccess otherBuff = (IBufferByteAccess)otherBuffer;
unsafe
{
return(thisBuff.GetBuffer() == otherBuff.GetBuffer());
}
}
public static Stream AsStream(this IBuffer source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
byte[] dataArr;
int dataOffs;
if (source.TryGetUnderlyingData(out dataArr, out dataOffs))
{
Debug.Assert(source.Capacity < int.MaxValue);
return(new MemoryStream(dataArr, dataOffs, (int)source.Capacity, true));
}
unsafe
{
IBufferByteAccess bufferByteAccess = (IBufferByteAccess)source;
return(new WindowsRuntimeBufferUnmanagedMemoryStream(source, (byte *)bufferByteAccess.GetBuffer()));
}
}