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/*
* Copyright 2012 Sebastian Annies, Hamburg
*
* 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.coremedia.iso;
import java.nio.ByteBuffer;
public final class IsoTypeWriter {
public static void writeUInt64(ByteBuffer bb, long u) {
bb.putLong(u);
}
public static void writeUInt32(ByteBuffer bb, long u) {
bb.putInt((int) u);
}
public static void writeUInt32BE(ByteBuffer bb, long u) {
assert u >= 0 && u <= 1L << 32 : "The given long is not in the range of uint32 (" + u + ")";
writeUInt16BE(bb, (int) u & 0xFFFF);
writeUInt16BE(bb, (int) ((u >> 16) & 0xFFFF));
}
public static void writeUInt24(ByteBuffer bb, int i) {
i = i & 0xFFFFFF;
writeUInt16(bb, i >> 8);
writeUInt8(bb, i);
}
public static void writeUInt16(ByteBuffer bb, int i) {
i = i & 0xFFFF;
writeUInt8(bb, i >> 8);
writeUInt8(bb, i & 0xFF);
}
public static void writeUInt16BE(ByteBuffer bb, int i) {
i = i & 0xFFFF;
writeUInt8(bb, i & 0xFF);
writeUInt8(bb, i >> 8);
}
public static void writeUInt8(ByteBuffer bb, int i) {
i = i & 0xFF;
bb.put((byte) i);
}
public static void writeFixedPont1616(ByteBuffer bb, double v) {
int result = (int) (v * 65536);
bb.put((byte) ((result & 0xFF000000) >> 24));
bb.put((byte) ((result & 0x00FF0000) >> 16));
bb.put((byte) ((result & 0x0000FF00) >> 8));
bb.put((byte) ((result & 0x000000FF)));
}
public static void writeFixedPont88(ByteBuffer bb, double v) {
short result = (short) (v * 256);
bb.put((byte) ((result & 0xFF00) >> 8));
bb.put((byte) ((result & 0x00FF)));
}
public static void writeIso639(ByteBuffer bb, String language) {
if (language.getBytes().length != 3) {
throw new IllegalArgumentException("\"" + language + "\" language string isn't exactly 3 characters long!");
}
int bits = 0;
for (int i = 0; i < 3; i++) {
bits += (language.getBytes()[i] - 0x60) << (2 - i) * 5;
}
writeUInt16(bb, bits);
}
public static void writeUtf8String(ByteBuffer bb, String string) {
bb.put(Utf8.convert(string));
writeUInt8(bb, 0);
}
}
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