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+/**
+ * Copyright 2014 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package com.jogamp.common.util;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.IntBuffer;
+import java.nio.LongBuffer;
+
+import org.junit.Test;
+
+import com.jogamp.common.nio.Buffers;
+import com.jogamp.common.os.Platform;
+import static com.jogamp.common.util.BitstreamData.*;
+import com.jogamp.junit.util.JunitTracer;
+
+import org.junit.FixMethodOrder;
+import org.junit.runners.MethodSorters;
+
+/**
+ * Test basic bit operations for {@link Bitstream}
+ */
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class TestBitstream00 extends JunitTracer {
+
+ @Test
+ public void test00ShowByteOrder() {
+ int i_ff = 0xff;
+ byte b_ff = (byte)i_ff;
+ System.err.println("i_ff "+i_ff+", "+toHexBinaryString(i_ff, 8));
+ System.err.println("b_ff "+b_ff+", "+toHexBinaryString(0xff & b_ff, 8));
+
+ System.err.println("Platform.LITTLE_ENDIAN: "+Platform.isLittleEndian());
+ showOrderImpl(null);
+ showOrderImpl(ByteOrder.BIG_ENDIAN);
+ showOrderImpl(ByteOrder.LITTLE_ENDIAN);
+
+ dumpData("tstMSB.whole", testBytesMSB, 0, testBytesMSB.length);
+ dumpData("tstLSB.pbyte", testBytesLSB_revByte, 0, testBytesLSB_revByte.length);
+ dumpData("tstLSB.whole", testBytesLSB, 0, testBytesLSB.length);
+ }
+ void showOrderImpl(ByteOrder byteOrder) {
+ final ByteBuffer bb_long = ByteBuffer.allocate(Buffers.SIZEOF_LONG);
+ if( null != byteOrder ) {
+ bb_long.order(byteOrder);
+ }
+ System.err.println("Order: "+byteOrder+" -> "+bb_long.order());
+ final LongBuffer lb = bb_long.asLongBuffer();
+ lb.put(0, 0x0807060504030201L);
+ dumpData("long."+byteOrder, bb_long, 0, bb_long.capacity());
+
+ final ByteBuffer bb_int = ByteBuffer.allocate(Buffers.SIZEOF_INT);
+ if( null != byteOrder ) {
+ bb_int.order(byteOrder);
+ }
+ final IntBuffer ib = bb_int.asIntBuffer();
+ ib.put(0, 0x04030201);
+ dumpData("long."+byteOrder, bb_int, 0, bb_int.capacity());
+
+ dumpData("tstMSB.whole", testBytesMSB, 0, testBytesMSB.length);
+ dumpData("tstLSB.pbyte", testBytesLSB_revByte, 0, testBytesLSB_revByte.length);
+ dumpData("tstLSB.whole", testBytesLSB, 0, testBytesLSB.length);
+ }
+
+ @Test
+ public void test01ShiftSigned() {
+ shiftSigned(0xA0000000); // negative w/ '1010' top-nibble
+ shiftSigned(-1);
+ }
+ void shiftSigned(final int i0) {
+ System.err.printf("i0 %012d, %s%n", i0, toHexBinaryString(i0, 32));
+ {
+ int im = i0;
+ for(int i=0; i<32; i++) {
+ final int bitA = ( 0 != ( i0 & ( 1 << i ) ) ) ? 1 : 0;
+ final int bitB = im & 0x01;
+ System.err.printf("[%02d]: bit[%d, %d], im %012d, %s%n", i, bitA, bitB, im, toHexBinaryString(im, 32));
+ im = im >>> 1;
+ }
+ }
+ }
+
+ public static void main(String args[]) throws IOException {
+ String tstname = TestBitstream00.class.getName();
+ org.junit.runner.JUnitCore.main(tstname);
+ }
+
+}