111 lines
3.0 KiB
Java
111 lines
3.0 KiB
Java
/*
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* Copyright 2013 Luciad (http://www.luciad.com)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.luciad.imageio.webp;
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import javax.imageio.ImageTypeSpecifier;
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import javax.imageio.ImageWriter;
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import javax.imageio.spi.ImageWriterSpi;
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import javax.imageio.stream.ImageOutputStream;
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import java.awt.color.ColorSpace;
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import java.awt.image.ColorModel;
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import java.awt.image.ComponentColorModel;
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import java.awt.image.ComponentSampleModel;
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import java.awt.image.DataBuffer;
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import java.awt.image.DirectColorModel;
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import java.awt.image.SampleModel;
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import java.awt.image.SinglePixelPackedSampleModel;
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import java.io.IOException;
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import java.util.Locale;
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/**
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*
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*/
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public class WebPImageWriterSpi extends ImageWriterSpi {
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public WebPImageWriterSpi() {
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super(
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"Luciad",
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"1.0",
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new String[]{ "WebP", "webp" },
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new String[]{ "webp" },
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new String[]{ "image/webp" },
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WebPReader.class.getName(),
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new Class[]{ ImageOutputStream.class },
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new String[]{ WebPImageReaderSpi.class.getName() },
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false,
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null,
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null,
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null,
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null,
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false,
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null,
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null,
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null,
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null
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);
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}
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@Override
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public boolean canEncodeImage( ImageTypeSpecifier type ) {
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ColorModel colorModel = type.getColorModel();
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SampleModel sampleModel = type.getSampleModel();
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int transferType = sampleModel.getTransferType();
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if ( colorModel instanceof ComponentColorModel ) {
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if ( !( sampleModel instanceof ComponentSampleModel ) ) {
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return false;
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}
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if ( transferType != DataBuffer.TYPE_BYTE && transferType != DataBuffer.TYPE_INT ) {
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return false;
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}
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}
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else if ( colorModel instanceof DirectColorModel ) {
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if ( !( sampleModel instanceof SinglePixelPackedSampleModel ) ) {
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return false;
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}
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if ( transferType != DataBuffer.TYPE_INT ) {
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return false;
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}
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}
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ColorSpace colorSpace = colorModel.getColorSpace();
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if ( !( colorSpace.isCS_sRGB() ) ) {
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return false;
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}
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int[] sampleSize = sampleModel.getSampleSize();
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for ( int i = 0; i < sampleSize.length; i++ ) {
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if ( sampleSize[ i ] > 8 ) {
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return false;
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}
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}
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return true;
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}
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@Override
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public ImageWriter createWriterInstance( Object extension ) throws IOException {
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return new WebPWriter( this );
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}
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@Override
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public String getDescription( Locale locale ) {
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return "WebP Writer";
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}
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}
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