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/*

* Reference arithmetic coding

* Copyright (c) Project Nayuki

*

* https://www.nayuki.io/page/reference-arithmetic-coding

* https://github.com/nayuki/Reference-arithmetic-coding

*/

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.InputStream;

/**

* Tests {@link PpmCompress} coupled with {@link PpmDecompress}.

*/

public class PpmCompressTest extends ArithmeticCodingTest {

protected byte[] compress(byte[] b) throws IOException {

InputStream in = new ByteArrayInputStream(b);

ByteArrayOutputStream out = new ByteArrayOutputStream();

try (BitOutputStream bitOut = new BitOutputStream(out)) {

PpmCompress.compress(in, bitOut);

}

return out.toByteArray();

}

protected byte[] decompress(byte[] b) throws IOException {

InputStream in = new ByteArrayInputStream(b);

ByteArrayOutputStream out = new ByteArrayOutputStream();

PpmDecompress.decompress(new BitInputStream(in), out);

return out.toByteArray();

}

}