本文整理汇总了Java中org.andengine.util.adt.data.constants.DataConstants.BITS_PER_LONG属性的典型用法代码示例。如果您正苦于以下问题：Java DataConstants.BITS_PER_LONG属性的具体用法？Java DataConstants.BITS_PER_LONG怎么用？Java DataConstants.BITS_PER_LONG使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.andengine.util.adt.data.constants.DataConstants的用法示例。
在下文中一共展示了DataConstants.BITS_PER_LONG属性的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: LongBackedBitVector
public LongBackedBitVector(final int pSize) throws IllegalArgumentException {
if (pSize <= 0) {
throw new IllegalArgumentException("pSize must be > 0.");
}
this.mSize = pSize;
/* Check if bytes perfectly fit into the data fields or if there are some overflow bytes that need special treatment. */
final boolean perfectDataFit = (pSize % DataConstants.BITS_PER_LONG) == 0;
final int dataLength;
if (perfectDataFit) {
dataLength = pSize / DataConstants.BITS_PER_LONG;
} else {
/* Extra field for overflow bytes. */
dataLength = (pSize / DataConstants.BITS_PER_LONG) + 1;
}
this.mData = new long[dataLength];
}
示例2: getBit
@Override
public int getBit(final int pIndex) throws IllegalArgumentException {
if (pIndex < 0) {
throw new IllegalArgumentException("pIndex must be >= 0.");
}
if (pIndex >= this.mSize) {
throw new IllegalArgumentException("pIndex must be < size.");
}
final int dataIndex = pIndex / DataConstants.BITS_PER_LONG;
final int dataOffset = pIndex % DataConstants.BITS_PER_LONG;
final long dataField = this.mData[dataIndex];
final int rightShift = DataConstants.BITS_PER_LONG - dataOffset - 1;
final long dataBit = (dataField >> rightShift) & 0x01;
final int bit = (int)dataBit;
return bit;
}
示例3: getLongBits
@Override
public long getLongBits(final int pIndex, final int pLength) throws IllegalArgumentException {
/* Sanity checks. */
if (pIndex < 0) {
throw new IllegalArgumentException("pIndex must be >= 0.");
}
if (pLength < 0) {
throw new IllegalArgumentException("pLength must be >= 0.");
}
if ((pIndex + pLength) > this.mSize) {
throw new IllegalArgumentException("pIndex + pLength must be <= size.");
}
/* Early exit. */
if (pLength == 0) {
return 0L;
}
final int dataIndex = pIndex / DataConstants.BITS_PER_LONG;
final int offset = pIndex % DataConstants.BITS_PER_LONG;
final long data;
if (offset == 0) {
data = this.mData[dataIndex];
} else if ((offset + pLength) <= DataConstants.BITS_PER_LONG) {
data = this.mData[dataIndex] << offset;
} else {
/* Join bits from adjacent data fields. */
data = (this.mData[dataIndex] << offset) | (this.mData[dataIndex + 1] >>> (DataConstants.BITS_PER_LONG - offset));
}
if (pLength == DataConstants.BITS_PER_LONG) {
return data;
} else {
final int rightShift = DataConstants.BITS_PER_LONG - pLength;
final long mask = 0xFFFFFFFFFFFFFFFFL >>> rightShift;
final long unmaskedBits = data >> rightShift;
return unmaskedBits & mask;
}
}
示例4: toByteArray
@Override
public byte[] toByteArray() {
final int byteArrayLength;
if ((this.mSize % DataConstants.BITS_PER_BYTE) == 0) {
byteArrayLength = this.mSize / DataConstants.BITS_PER_BYTE;
} else {
byteArrayLength = (this.mSize / DataConstants.BITS_PER_BYTE) + 1;
}
final byte[] bytes = new byte[byteArrayLength];
/* Check if bytes perfectly fit into the data fields or if there are some overflow bytes that need special treatment. */
final boolean perfectDataFit = (this.mSize % DataConstants.BITS_PER_LONG) == 0;
final long[] data = this.mData;
final int dataLength = data.length;
final int lastCompleteDataIndex = (perfectDataFit) ? dataLength - 1 : dataLength - 2;
int bytesOffset = (lastCompleteDataIndex * DataConstants.BYTES_PER_LONG) + (DataConstants.BYTES_PER_LONG - 1);
for (int i = lastCompleteDataIndex; i >= 0; i--) {
final long dataField = data[i];
bytes[bytesOffset--] = (byte) ((dataField >> 0) & 0xFF);
bytes[bytesOffset--] = (byte) ((dataField >> 8) & 0xFF);
bytes[bytesOffset--] = (byte) ((dataField >> 16) & 0xFF);
bytes[bytesOffset--] = (byte) ((dataField >> 24) & 0xFF);
bytes[bytesOffset--] = (byte) ((dataField >> 32) & 0xFF);
bytes[bytesOffset--] = (byte) ((dataField >> 40) & 0xFF);
bytes[bytesOffset--] = (byte) ((dataField >> 48) & 0xFF);
bytes[bytesOffset--] = (byte) ((dataField >> 56) & 0xFF);
}
/* Put overflow bytes into last data field. */
if (!perfectDataFit) {
final int overflowDataIndex = dataLength - 1;
final long overflowDataField = data[overflowDataIndex];
final int overflowBytesOffset = overflowDataIndex * DataConstants.BYTES_PER_LONG;
final int overflowByteCount = bytes.length % DataConstants.BYTES_PER_LONG;
switch (overflowByteCount) {
case 7:
bytes[overflowBytesOffset + 6] = (byte) ((overflowDataField >> 8) & 0xFF);
case 6:
bytes[overflowBytesOffset + 5] = (byte) ((overflowDataField >> 16) & 0xFF);
case 5:
bytes[overflowBytesOffset + 4] = (byte) ((overflowDataField >> 24) & 0xFF);
case 4:
bytes[overflowBytesOffset + 3] = (byte) ((overflowDataField >> 32) & 0xFF);
case 3:
bytes[overflowBytesOffset + 2] = (byte) ((overflowDataField >> 40) & 0xFF);
case 2:
bytes[overflowBytesOffset + 1] = (byte) ((overflowDataField >> 48) & 0xFF);
case 1:
bytes[overflowBytesOffset + 0] = (byte) ((overflowDataField >> 56) & 0xFF);
}
}
return bytes;
}