java.nio.Buffer.array()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.nio.Buffer.array()方法的一些代码示例,展示了Buffer.array()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。Buffer.array()方法的具体详情如下:
包路径:java.nio.Buffer
类名称:Buffer
方法名:array

Buffer.array介绍

[英]Returns the array that backs this buffer (optional operation). The returned value is the actual array, not a copy, so modifications to the array write through to the buffer.

Subclasses should override this method with a covariant return type to provide the exact type of the array.

Use hasArray to ensure this method won't throw. (A separate call to isReadOnly is not necessary.)
[中]返回支持此缓冲区的数组(可选操作)。返回的值是实际数组,而不是副本,因此对数组的修改将写入缓冲区。
子类应使用协变返回类型重写此方法,以提供数组的确切类型。
使用hasArray确保此方法不会抛出。(不需要单独致电isReadOnly。)

代码示例

代码示例来源:origin: robovm/robovm

/**
 * Returns the underlying Java array containing the data of the
 * given Buffer, or null if the Buffer is not backed by a Java array.
 *
 * @param b the Buffer to be queried
 * @return the Java array containing the Buffer's data, or null if
 * there is none
 */
static Object getBaseArray(Buffer b) {
  return b.hasArray() ? b.array() : null;
}

代码示例来源:origin: robovm/robovm

} else {
  if (buffer.hasArray()) {
    array = buffer.array();
    offset = buffer.arrayOffset();
  } else {

代码示例来源:origin: robovm/robovm

@MarshalsPointer(supportedCallTypes = MarshalerFlags.CALL_TYPE_BRIDGE)
public static long toNative(Buffer buffer, long flags) {
  if (buffer == null) {
    return 0L;
  }
  if (!buffer.isDirect() && !buffer.hasArray()) {
    // Non-direct buffers must be backed by an array to be supported.
    // We could have made a copy of the buffer contents and returned
    // a pointer to that but then changes made to the contents by
    // native code wouldn't be visible in the original buffer and
    // the semantics would be different depending on the type of
    // the buffer.
    throw new IllegalArgumentException("Only direct and array-backed " 
        + "java.nio.Buffers can be marshaled to pointers.");
  }
  if (buffer.isDirect()) {
    return VM.getLong(VM.getObjectAddress(buffer) + EFFECTIVE_DIRECT_ADDRESS_OFFSET);
  } else {
    Object array = buffer.array();
    int offset = buffer.arrayOffset();
    int shift = VM.getInt(VM.getObjectAddress(buffer) + _ELEMENT_SIZE_SHIFT_OFFSET);
    return VM.getArrayValuesAddress(array) + (offset << shift);
  }
}

代码示例来源:origin: Rajawali/Rajawali

public static int[] getIntArrayFromBuffer(Buffer buffer) {
  int[] array = new int[0];
  if (buffer != null) {
    if (buffer.hasArray()) {
      array = (int[]) buffer.array();
    } else {
      buffer.rewind();
      array = new int[buffer.capacity()];
      if (buffer instanceof IntBuffer) {
        ((IntBuffer) buffer).get(array);
      } else if (buffer instanceof ShortBuffer) {
        int count = 0;
        while (buffer.hasRemaining()) {
          array[count] = (int) (((ShortBuffer) buffer).get());
          ++count;
        }
      }
    }
  }
  return array;
}

代码示例来源:origin: org.robovm/robovm-rt-common

public static long getBufferAddress(Buffer buffer) {
  if (buffer.isDirect()) {
    return VM.getLong(VM.getObjectAddress(buffer) + ADDRESS_OFFSET);
  } else {
    Object array = buffer.array();
    int offset = buffer.arrayOffset();
    int shift = getElementShift(array);
    return VM.getArrayValuesAddress(array) + (offset << shift);
  }
}

代码示例来源:origin: Rajawali/Rajawali

/**
   * Creates an int array from the provided {@link IntBuffer} or {@link ShortBuffer}.
   * 
   * @param buffer {@link Buffer} the data source. Should be either a {@link IntBuffer} 
   * or {@link ShortBuffer}.
   * @return int array containing the data of the buffer.
   */
  public static int[] getIntArrayFromBuffer(Buffer buffer) {
    int[] array = null;
    if (buffer.hasArray()) {
      array = (int[]) buffer.array();
    } else {
      buffer.rewind();
      array = new int[buffer.capacity()];
      if (buffer instanceof IntBuffer) {
        ((IntBuffer) buffer).get(array);
      } else if (buffer instanceof ShortBuffer) {
        int count = 0;
        while (buffer.hasRemaining()) {
          array[count] = (int) (((ShortBuffer) buffer).get());
          ++count;
        }
      }
    }
    return array;
  }
}

代码示例来源:origin: MobiVM/robovm

public static long getBufferAddress(Buffer buffer) {
  if (buffer.isDirect()) {
    return VM.getLong(VM.getObjectAddress(buffer) + EFFECTIVE_DIRECT_ADDRESS_OFFSET);
  } else {
    Object array = buffer.array();
    int offset = buffer.arrayOffset();
    int shift = VM.getInt(VM.getObjectAddress(buffer) + _ELEMENT_SIZE_SHIFT_OFFSET);
    return VM.getArrayValuesAddress(array) + (offset << shift);
  }
}

代码示例来源:origin: io.prestosql.cassandra/cassandra-driver

@Override
public Object object(Object o) {
  return ((Buffer) o).array();
}

代码示例来源:origin: com.mobidevelop.robovm/robovm-rt

public static long getBufferAddress(Buffer buffer) {
  if (buffer.isDirect()) {
    return VM.getLong(VM.getObjectAddress(buffer) + EFFECTIVE_DIRECT_ADDRESS_OFFSET);
  } else {
    Object array = buffer.array();
    int offset = buffer.arrayOffset();
    int shift = VM.getInt(VM.getObjectAddress(buffer) + _ELEMENT_SIZE_SHIFT_OFFSET);
    return VM.getArrayValuesAddress(array) + (offset << shift);
  }
}

代码示例来源:origin: com.facebook.presto.cassandra/cassandra-driver

@Override
public Object object(Object o) {
  return ((Buffer) o).array();
}

代码示例来源:origin: com.gluonhq/robovm-rt

public static long getBufferAddress(Buffer buffer) {
  if (buffer.isDirect()) {
    return VM.getLong(VM.getObjectAddress(buffer) + EFFECTIVE_DIRECT_ADDRESS_OFFSET);
  } else {
    Object array = buffer.array();
    int offset = buffer.arrayOffset();
    int shift = VM.getInt(VM.getObjectAddress(buffer) + _ELEMENT_SIZE_SHIFT_OFFSET);
    return VM.getArrayValuesAddress(array) + (offset << shift);
  }
}

代码示例来源:origin: ch.unibas.cs.gravis/scalismo-native-stub

@Override
public Object array() throws UnsupportedOperationException {
  return buffer.array();
}

代码示例来源:origin: ibinti/bugvm

/**
 * Returns the underlying Java array containing the data of the
 * given Buffer, or null if the Buffer is not backed by a Java array.
 *
 * @param b the Buffer to be queried
 * @return the Java array containing the Buffer's data, or null if
 * there is none
 */
static Object getBaseArray(Buffer b) {
  return b.hasArray() ? b.array() : null;
}

代码示例来源:origin: MobiVM/robovm

/**
 * Returns the underlying Java array containing the data of the
 * given Buffer, or null if the Buffer is not backed by a Java array.
 *
 * @param b the Buffer to be queried
 * @return the Java array containing the Buffer's data, or null if
 * there is none
 */
static Object getBaseArray(Buffer b) {
  return b.hasArray() ? b.array() : null;
}

代码示例来源:origin: com.gluonhq/robovm-rt

/**
 * Returns the underlying Java array containing the data of the
 * given Buffer, or null if the Buffer is not backed by a Java array.
 *
 * @param b the Buffer to be queried
 * @return the Java array containing the Buffer's data, or null if
 * there is none
 */
static Object getBaseArray(Buffer b) {
  return b.hasArray() ? b.array() : null;
}

代码示例来源:origin: com.mobidevelop.robovm/robovm-rt

/**
 * Returns the underlying Java array containing the data of the
 * given Buffer, or null if the Buffer is not backed by a Java array.
 *
 * @param b the Buffer to be queried
 * @return the Java array containing the Buffer's data, or null if
 * there is none
 */
static Object getBaseArray(Buffer b) {
  return b.hasArray() ? b.array() : null;
}

代码示例来源:origin: com.bugvm/bugvm-rt

/**
 * Returns the underlying Java array containing the data of the
 * given Buffer, or null if the Buffer is not backed by a Java array.
 *
 * @param b the Buffer to be queried
 * @return the Java array containing the Buffer's data, or null if
 * there is none
 */
static Object getBaseArray(Buffer b) {
  return b.hasArray() ? b.array() : null;
}

代码示例来源:origin: FlexoVM/flexovm

/**
 * Returns the underlying Java array containing the data of the
 * given Buffer, or null if the Buffer is not backed by a Java array.
 *
 * @param b the Buffer to be queried
 * @return the Java array containing the Buffer's data, or null if
 * there is none
 */
static Object getBaseArray(Buffer b) {
  return b.hasArray() ? b.array() : null;
}

代码示例来源:origin: gov.nasa.gsfc.heasarc/nom-tam-fits

protected void prepareUncompressedData(Object data, Header header) throws FitsException {
  tiledImageOperation().readPrimaryHeaders(header);
  Buffer source = tiledImageOperation().getBaseType().newBuffer(this.tiledImageOperation.getBufferSize());
  ArrayFuncs.copyInto(data, source.array());
  tiledImageOperation().prepareUncompressedData(source);
}

代码示例来源:origin: nom-tam-fits/nom-tam-fits

protected void prepareUncompressedData(Object data, Header header) throws FitsException {
  tiledImageOperation().readPrimaryHeaders(header);
  Buffer source = tiledImageOperation().getBaseType().newBuffer(this.tiledImageOperation.getBufferSize());
  ArrayFuncs.copyInto(data, source.array());
  tiledImageOperation().prepareUncompressedData(source);
}

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