/// <summary>
/// Closes the encoded image handling null.
/// </summary>
/// <param name="encodedImage">
/// The encoded image to close.
/// </param>
public static void CloseSafely(EncodedImage encodedImage)
{
if (encodedImage != null)
{
encodedImage.Dispose();
}
}
/// <summary>
/// Returns a new CloseableReference to the same underlying
/// SharedReference or null if invalid. The SharedReference
/// ref-count is incremented.
/// </summary>
public EncodedImage CloneOrNull()
{
EncodedImage encodedImage;
if (_inputStreamSupplier != null)
{
encodedImage = new EncodedImage(_inputStreamSupplier, StreamSize);
}
else
{
CloseableReference <IPooledByteBuffer> pooledByteBufferRef =
CloseableReference <IPooledByteBuffer> .CloneOrNull(_pooledByteBufferRef);
try
{
encodedImage = (pooledByteBufferRef == null) ?
null :
new EncodedImage(pooledByteBufferRef);
}
finally
{
// Close the recently created reference since it will be
// cloned again in the constructor.
CloseableReference <IPooledByteBuffer> .CloseSafely(pooledByteBufferRef);
}
}
if (encodedImage != null)
{
encodedImage.CopyMetaDataFrom(this);
}
return(encodedImage);
}
/// <summary>
/// Copy the meta data from another EncodedImage.
/// </summary>
/// <param name="encodedImage">
/// The EncodedImage to copy the meta data from.
/// </param>
public void CopyMetaDataFrom(EncodedImage encodedImage)
{
Format = encodedImage.Format;
Width = encodedImage.Width;
Height = encodedImage.Height;
RotationAngle = encodedImage.RotationAngle;
SampleSize = encodedImage.SampleSize;
StreamSize = encodedImage.Size;
}
/// <summary>
/// Returns the cloned encoded image if the parameter received is
/// not null, null otherwise.
/// </summary>
/// <param name="encodedImage">The EncodedImage to clone.</param>
public static EncodedImage CloneOrNull(EncodedImage encodedImage)
{
return(encodedImage != null?encodedImage.CloneOrNull() : null);
}
/// <summary>
/// Checks if the encoded image is valid i.e. is not null, and
/// is not closed.
/// <returns>True if the encoded image is valid.</returns>
/// </summary>
public static bool IsValid(EncodedImage encodedImage)
{
return(encodedImage != null && encodedImage.Valid);
}
/// <summary>
/// Returns true if all the image information has loaded, false otherwise.
/// </summary>
public static bool IsMetaDataAvailable(EncodedImage encodedImage)
{
return(encodedImage.RotationAngle >= 0 &&
encodedImage.Width >= 0 &&
encodedImage.Height >= 0);
}
