93 lines
3.1 KiB
Java
93 lines
3.1 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 org.scijava.nativelib.NativeLibraryUtil;
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import java.io.IOException;
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import java.nio.ByteOrder;
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final class WebP {
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private static boolean NATIVE_LIBRARY_LOADED = false;
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static synchronized void loadNativeLibrary() {
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if (!NATIVE_LIBRARY_LOADED) {
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NATIVE_LIBRARY_LOADED = true;
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NativeLibraryUtil.loadNativeLibrary(WebP.class, "webp-imageio");
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}
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}
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static {
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loadNativeLibrary();
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}
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private WebP() {
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}
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public static int[] decode(WebPDecoderOptions aOptions, byte[] aData, int aOffset, int aLength, int[] aOut) throws IOException {
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if (aOptions == null) {
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throw new NullPointerException("Decoder options may not be null");
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}
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if (aData == null) {
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throw new NullPointerException("Input data may not be null");
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}
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if (aOffset + aLength > aData.length) {
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throw new IllegalArgumentException("Offset/length exceeds array size");
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}
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int[] pixels = decode(aOptions.fPointer, aData, aOffset, aLength, aOut, ByteOrder.nativeOrder().equals(ByteOrder.BIG_ENDIAN));
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VP8StatusCode status = VP8StatusCode.getStatusCode(aOut[0]);
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switch (status) {
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case VP8_STATUS_OK:
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break;
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case VP8_STATUS_OUT_OF_MEMORY:
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throw new OutOfMemoryError();
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default:
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throw new IOException("Decode returned code " + status);
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}
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return pixels;
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}
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private static native int[] decode(long aDecoderOptionsPointer, byte[] aData, int aOffset, int aLength, int[] aFlags, boolean aBigEndian);
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public static int[] getInfo(byte[] aData, int aOffset, int aLength) throws IOException {
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int[] out = new int[2];
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int result = getInfo(aData, aOffset, aLength, out);
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if (result == 0) {
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throw new IOException("Invalid WebP data");
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}
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return out;
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}
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private static native int getInfo(byte[] aData, int aOffset, int aLength, int[] aOut);
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public static byte[] encodeRGBA(WebPEncoderOptions aOptions, byte[] aRgbaData, int aWidth, int aHeight, int aStride) {
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return encodeRGBA(aOptions.fPointer, aRgbaData, aWidth, aHeight, aStride);
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}
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private static native byte[] encodeRGBA(long aConfig, byte[] aRgbaData, int aWidth, int aHeight, int aStride);
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public static byte[] encodeRGB(WebPEncoderOptions aOptions, byte[] aRgbaData, int aWidth, int aHeight, int aStride) {
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return encodeRGB(aOptions.fPointer, aRgbaData, aWidth, aHeight, aStride);
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}
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private static native byte[] encodeRGB(long aConfig, byte[] aRgbaData, int aWidth, int aHeight, int aStride);
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}
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