Examples of org.apache.sis.internal.storage.ChannelImageInputStream

org.apache.sis.internal.storage.ChannelImageInputStream
Adds the missing methods in {@code ChannelDataInput} for implementing the {@code ImageInputStream} interface.The JDK approach for creating an image input stream from a channel would be as below: {@preformat javaReadableByteChannel channel = ...; ImageInputStream stream = ImageIO.createImageInputStream(Channels.newInputStream(channel));}However the standard {@link javax.imageio.stream.ImageInputStreamImpl} implementation performs many work by itself,including supporting various {@linkplain ByteOrder byte order}, which could be more efficiently done by NIO. Furthermore, this class allows us to reuse an existing buffer (especially direct buffer, which are costly to create) and allow subclasses to store additional information, for example the file path.
This class is used when compatibility with {@link javax.imageio.ImageReader} is needed.
@author Martin Desruisseaux (Geomatys) @since 0.3 (derived from geotk-3.07) @version 0.3 @module @see javax.imageio.stream.FileImageInputStream @see javax.imageio.ImageIO#createImageInputStream(Object) @see java.nio.channels.Channels#newInputStream(ReadableByteChannel)

                // TODO: we do not create direct buffer yet, but this is something
                // we may want to consider in a future SIS version.
            }
            final String name = getStorageName();
            if (asImageInputStream) {
                asDataInput = new ChannelImageInputStream(name, channel, buffer, false);
            } else {
                asDataInput = new ChannelDataInput(name, channel, buffer, false);
            }
        }
        addView(ChannelDataInput.class, asDataInput);

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            if (c == null) {
                asDataInput = ImageIO.createImageInputStream(storage);
            } else if (c instanceof DataInput) {
                asDataInput = (DataInput) c;
            } else {
                asDataInput = new ChannelImageInputStream(c);
                if (views.put(ChannelDataInput.class, asDataInput) != c) {
                    throw new ConcurrentModificationException();
                }
            }
        }

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                // TODO: we do not create direct buffer yet, but this is something
                // we may want to consider in a future SIS version.
            }
            final String name = getStorageName();
            if (asImageInputStream) {
                asDataInput = new ChannelImageInputStream(name, channel, buffer, false);
            } else {
                asDataInput = new ChannelDataInput(name, channel, buffer, false);
            }
            addViewToClose(asDataInput, channel);
        }

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                addViewToClose(asDataInput, storage);
            } else if (c instanceof DataInput) {
                asDataInput = (DataInput) c;
                // No call to 'addViewToClose' because the instance already exists.
            } else {
                asDataInput = new ChannelImageInputStream(c);
                if (views.put(ChannelDataInput.class, asDataInput) != c) { // Replace the previous instance.
                    throw new ConcurrentModificationException();
                }
                addViewToClose(asDataInput, c.channel);
            }

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org.apache.sis.storage.StorageConnector

java.io.IOException

java.nio.ByteOrder

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