/*
* JaamSim Discrete Event Simulation
* Copyright (C) 2012 Ausenco Engineering Canada Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.jaamsim.video.vp8;
import static org.junit.Assert.assertTrue;
import java.nio.ByteBuffer;
import java.util.Random;
import org.junit.Test;
public class TestBoolEncoder {
private final int NUM_BITS = 10000000;
private final int NUM_INTS = 100000;
@Test
public void testEncoder() {
Random rand = new Random();
int[] probs = new int[NUM_BITS];
boolean[] bits = new boolean[NUM_BITS];
for (int i = 0; i < NUM_BITS; ++i) {
probs[i] = rand.nextInt(256);
if (probs[i] == 0) { probs[i] = 0; }
bits[i] = rand.nextInt(256) >= probs[i];
}
BoolEncoder enc = new BoolEncoder();
for (int i = 0; i < NUM_BITS; ++i) {
enc.encodeBoolean(bits[i], probs[i]);
}
ByteBuffer stream = enc.getData();
BoolDecoder dec = new BoolDecoder(stream);
for (int i = 0; i < NUM_BITS; ++i) {
boolean val = dec.decodeBit(probs[i]) == 1;
assertTrue(val == bits[i]);
}
}
@Test
public void testLitUInt() {
Random rand = new Random();
int[] vals = new int[NUM_INTS];
int[] sizes = new int[NUM_INTS];
for (int i = 0; i < NUM_INTS; ++i) {
sizes[i] = rand.nextInt(24) + 2;
vals[i] = rand.nextInt(1 << (sizes[i] - 1));
}
BoolEncoder enc = new BoolEncoder();
for (int i = 0; i < NUM_INTS; ++i) {
enc.encodeLitUInt(vals[i], sizes[i]);
}
ByteBuffer stream = enc.getData();
BoolDecoder dec = new BoolDecoder(stream);
for (int i = 0; i < NUM_INTS; ++i) {
int decVal = dec.getLitUInt(sizes[i]);
assertTrue(decVal == vals[i]);
}
}
@Test
public void testLitInt() {
Random rand = new Random();
int[] vals = new int[NUM_INTS];
int[] sizes = new int[NUM_INTS];
for (int i = 0; i < NUM_INTS; ++i) {
sizes[i] = rand.nextInt(24) + 2;
vals[i] = rand.nextInt(1 << (sizes[i] - 1)) - (1 << (sizes[i] - 2));
}
BoolEncoder enc = new BoolEncoder();
for (int i = 0; i < NUM_INTS; ++i) {
enc.encodeLitInt(vals[i], sizes[i]);
}
ByteBuffer stream = enc.getData();
BoolDecoder dec = new BoolDecoder(stream);
for (int i = 0; i < NUM_INTS; ++i) {
int decVal = dec.getLitInt(sizes[i]);
assertTrue(decVal == vals[i]);
}
}
}