/// <summary>
/// bitmap cache get ->
/// background thread hand-off -> multiplex -> bitmap cache ->
/// decode -> branch on separate images
/// -> exif resize and rotate -> exif thumbnail creation
/// -> local image resize and rotate -> add meta data producer
/// -> multiplex -> encoded cache -> (webp transcode)
/// -> local file fetch.
/// </summary>
private IProducer <CloseableReference <CloseableImage> > GetLocalImageFileFetchSequence()
{
lock (_gate)
{
if (_localImageFileFetchSequence == null)
{
LocalFileFetchProducer localFileFetchProducer =
_producerFactory.NewLocalFileFetchProducer();
_localImageFileFetchSequence =
NewBitmapCacheGetToLocalTransformSequence(localFileFetchProducer);
}
return(_localImageFileFetchSequence);
}
}
/// <summary>
/// encoded cache multiplex -> encoded cache -> local file fetch.
/// </summary>
private IProducer <CloseableReference <IPooledByteBuffer> > GetEncodedLocalImageFileFetchSequence()
{
lock (_gate)
{
if (_encodedLocalImageFileFetchSequence == null)
{
LocalFileFetchProducer localFileFetchProducer =
_producerFactory.NewLocalFileFetchProducer();
_encodedLocalImageFileFetchSequence = new RemoveImageTransformMetaDataProducer(
NewEncodedCacheMultiplexToTranscodeSequence(localFileFetchProducer));
}
return(_encodedLocalImageFileFetchSequence);
}
}