/* Binary Format
*
* format (13 bytes)
* version (5 bytes)
* size (4 bytes)
*
* schedulePiece (N bytes)
* endTime (4 bytes)
* size (4 bytes)
* scIndex (4 bytes)
* ...
* scIndex (4 bytes)
* ...
* schedulePiece (N bytes)
*
* */
public byte[] encode() throws IOException {
if (isScheduleUpdated || null == bytes) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
// TODO: write format and version
bos.write(format.getBytes());
bos.write(version.getBytes());
bos.write(BinaryUtil.intToBytes(toSchedulePieces().size()));
for (SchedulePiece p : toSchedulePieces()) {
bos.write(BinaryUtil.intToBytes(p.getEndTime()));
bos.write(BinaryUtil.intToBytes(p.soundCount()));
for (int index = 0; index < p.soundCount(); index++)
bos.write(BinaryUtil.intToBytes(p.getSoundIndex(index)));
}
bytes = bos.toByteArray();
size = bytes.length;
bos.close();
}
return bytes;
}
public static SoundSchedule decode(byte[] bytes, int offset) throws IOException {
int initialOffset = offset;
int bytesIndex = offset;
// check format and version
if (!format.equals(BinaryUtil.toString(bytes, bytesIndex, format.length()))) return null;
bytesIndex += format.length();
if (!version.equals(BinaryUtil.toString(bytes, bytesIndex, version.length()))) return null;
bytesIndex += version.length();
// decodes schedule pieces
int schedulePieceCount = BinaryUtil.toInt(bytes, bytesIndex);
ArrayList<SchedulePiece> schedulePieces = new ArrayList<SchedulePiece>(schedulePieceCount);
bytesIndex += 4;
for (int schedulePieceIndex = 0;
schedulePieceIndex < schedulePieceCount;
schedulePieceIndex++) {
int endTime = BinaryUtil.toInt(bytes, bytesIndex);
bytesIndex += 4;
int scIndexCount = BinaryUtil.toInt(bytes, bytesIndex);
int[] scIndecies = new int[scIndexCount];
bytesIndex += 4;
for (int scIndexIndex = 0; scIndexIndex < scIndexCount; scIndexIndex++) {
scIndecies[scIndexIndex] = BinaryUtil.toInt(bytes, bytesIndex);
bytesIndex += 4;
}
schedulePieces.add(new SchedulePiece(endTime, scIndecies));
}
SoundSchedule schedule = new SoundSchedule(schedulePieces);
schedule.size = bytesIndex - initialOffset;
return schedule;
}