/// <summary>
/// encoded cache multiplex -> encoded cache -> data fetch.
/// </summary>
private IProducer <CloseableReference <IPooledByteBuffer> > GetEncodedDataFetchSequence()
{
lock (_gate)
{
if (_encodedDataFetchSequence == null)
{
DataFetchProducer dataFetchProducer =
_producerFactory.NewDataFetchProducer();
_encodedDataFetchSequence = new RemoveImageTransformMetaDataProducer(
NewEncodedCacheMultiplexToTranscodeSequence(dataFetchProducer));
}
return(_encodedDataFetchSequence);
}
}
/// <summary>
/// bitmap cache get ->
/// background thread hand-off -> bitmap cache -> decode ->
/// resize and rotate -> (webp transcode) -> data fetch.
/// </summary>
private IProducer <CloseableReference <CloseableImage> > GetDataFetchSequence()
{
lock (_gate)
{
if (_dataFetchSequence == null)
{
IProducer <EncodedImage> inputProducer = _producerFactory.NewDataFetchProducer();
inputProducer = ProducerFactory.NewAddImageTransformMetaDataProducer(inputProducer);
if (!_downsampleEnabled)
{
inputProducer = _producerFactory.NewResizeAndRotateProducer(inputProducer);
}
_dataFetchSequence = NewBitmapCacheGetToDecodeSequence(inputProducer);
}
return(_dataFetchSequence);
}
}