content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * 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 android.os;
  
  import android.annotation.NonNull;
  import android.annotation.Nullable;
  import android.annotation.SystemApi;
  import android.annotation.TestApi;
  
  import libcore.util.NativeAllocationRegistry;
  
  /**
   * Represents fixed sized allocation of marshalled data used. Helper methods
   * allow for access to the unmarshalled data in a variety of ways.
   *
   * @hide
   */
  @SystemApi
  @TestApi
  public class HwBlob {
      private static final String TAG = "HwBlob";
  
      private static final NativeAllocationRegistry sNativeRegistry;
  
      public HwBlob(int size) {
          native_setup(size);
  
          sNativeRegistry.registerNativeAllocation(
                  this,
                  mNativeContext);
      }
  
      /**
       * @param offset offset to unmarshall a boolean from
       * @return the unmarshalled boolean value
       * @throws IndexOutOfBoundsException when offset is out of this HwBlob
       */
      public native final boolean getBool(long offset);
      /**
       * @param offset offset to unmarshall a byte from
       * @return the unmarshalled byte value
       * @throws IndexOutOfBoundsException when offset is out of this HwBlob
       */
      public native final byte getInt8(long offset);
      /**
       * @param offset offset to unmarshall a short from
       * @return the unmarshalled short value
       * @throws IndexOutOfBoundsException when offset is out of this HwBlob
       */
      public native final short getInt16(long offset);
      /**
       * @param offset offset to unmarshall an int from
       * @return the unmarshalled int value
       * @throws IndexOutOfBoundsException when offset is out of this HwBlob
       */
      public native final int getInt32(long offset);
      /**
       * @param offset offset to unmarshall a long from
       * @return the unmarshalled long value
       * @throws IndexOutOfBoundsException when offset is out of this HwBlob
       */
      public native final long getInt64(long offset);
      /**
       * @param offset offset to unmarshall a float from
       * @return the unmarshalled float value
       * @throws IndexOutOfBoundsException when offset is out of this HwBlob
       */
      public native final float getFloat(long offset);
      /**
       * @param offset offset to unmarshall a double from
       * @return the unmarshalled double value
       * @throws IndexOutOfBoundsException when offset is out of this HwBlob
       */
      public native final double getDouble(long offset);
      /**
       * @param offset offset to unmarshall a string from
       * @return the unmarshalled string value
       * @throws IndexOutOfBoundsException when offset is out of this HwBlob
       */
      public native final String getString(long offset);
  
      /**
       * Copy the blobs data starting from the given byte offset into the range, copying
       * a total of size elements.
       *
       * @param offset starting location in blob
       * @param array destination array
       * @param size total number of elements to copy
       * @throws IllegalArgumentException array.length < size
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jboolean)] out of the blob.
       */
      public native final void copyToBoolArray(long offset, boolean[] array, int size);
      /**
       * Copy the blobs data starting from the given byte offset into the range, copying
       * a total of size elements.
       *
       * @param offset starting location in blob
       * @param array destination array
       * @param size total number of elements to copy
       * @throws IllegalArgumentException array.length < size
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jbyte)] out of the blob.
       */
      public native final void copyToInt8Array(long offset, byte[] array, int size);
      /**
       * Copy the blobs data starting from the given byte offset into the range, copying
       * a total of size elements.
       *
       * @param offset starting location in blob
       * @param array destination array
       * @param size total number of elements to copy
       * @throws IllegalArgumentException array.length < size
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jshort)] out of the blob.
       */
      public native final void copyToInt16Array(long offset, short[] array, int size);
      /**
       * Copy the blobs data starting from the given byte offset into the range, copying
       * a total of size elements.
       *
       * @param offset starting location in blob
       * @param array destination array
       * @param size total number of elements to copy
       * @throws IllegalArgumentException array.length < size
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jint)] out of the blob.
       */
      public native final void copyToInt32Array(long offset, int[] array, int size);
      /**
       * Copy the blobs data starting from the given byte offset into the range, copying
       * a total of size elements.
       *
       * @param offset starting location in blob
       * @param array destination array
       * @param size total number of elements to copy
       * @throws IllegalArgumentException array.length < size
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jlong)] out of the blob.
       */
      public native final void copyToInt64Array(long offset, long[] array, int size);
      /**
       * Copy the blobs data starting from the given byte offset into the range, copying
       * a total of size elements.
       *
       * @param offset starting location in blob
       * @param array destination array
       * @param size total number of elements to copy
       * @throws IllegalArgumentException array.length < size
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jfloat)] out of the blob.
       */
      public native final void copyToFloatArray(long offset, float[] array, int size);
      /**
       * Copy the blobs data starting from the given byte offset into the range, copying
       * a total of size elements.
       *
       * @param offset starting location in blob
       * @param array destination array
       * @param size total number of elements to copy
       * @throws IllegalArgumentException array.length < size
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jdouble)] out of the blob.
       */
      public native final void copyToDoubleArray(long offset, double[] array, int size);
  
      /**
       * Writes a boolean value at an offset.
       *
       * @param offset location to write value
       * @param x value to write
       * @throws IndexOutOfBoundsException when [offset, offset + sizeof(jboolean)] is out of range
       */
      public native final void putBool(long offset, boolean x);
      /**
       * Writes a byte value at an offset.
       *
       * @param offset location to write value
       * @param x value to write
       * @throws IndexOutOfBoundsException when [offset, offset + sizeof(jbyte)] is out of range
       */
      public native final void putInt8(long offset, byte x);
      /**
       * Writes a short value at an offset.
       *
       * @param offset location to write value
       * @param x value to write
       * @throws IndexOutOfBoundsException when [offset, offset + sizeof(jshort)] is out of range
       */
      public native final void putInt16(long offset, short x);
      /**
       * Writes a int value at an offset.
       *
       * @param offset location to write value
       * @param x value to write
       * @throws IndexOutOfBoundsException when [offset, offset + sizeof(jint)] is out of range
       */
      public native final void putInt32(long offset, int x);
      /**
       * Writes a long value at an offset.
       *
       * @param offset location to write value
       * @param x value to write
       * @throws IndexOutOfBoundsException when [offset, offset + sizeof(jlong)] is out of range
       */
      public native final void putInt64(long offset, long x);
      /**
       * Writes a float value at an offset.
       *
       * @param offset location to write value
       * @param x value to write
       * @throws IndexOutOfBoundsException when [offset, offset + sizeof(jfloat)] is out of range
       */
      public native final void putFloat(long offset, float x);
      /**
       * Writes a double value at an offset.
       *
       * @param offset location to write value
       * @param x value to write
       * @throws IndexOutOfBoundsException when [offset, offset + sizeof(jdouble)] is out of range
       */
      public native final void putDouble(long offset, double x);
      /**
       * Writes a string value at an offset.
       *
       * @param offset location to write value
       * @param x value to write
       * @throws IndexOutOfBoundsException when [offset, offset + sizeof(jstring)] is out of range
       */
      public native final void putString(long offset, String x);
      /**
       * Writes a native handle (without duplicating the underlying file descriptors) at an offset.
       *
       * @param offset location to write value
       * @param x a {@link NativeHandle} instance to write
       * @throws IndexOutOfBoundsException when [offset, offset + sizeof(jobject)] is out of range
       */
      public native final void putNativeHandle(long offset, @Nullable NativeHandle x);
  
      /**
       * Put a boolean array contiguously at an offset in the blob.
       *
       * @param offset location to write values
       * @param x array to write
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jboolean)] out of the blob.
       */
      public native final void putBoolArray(long offset, boolean[] x);
      /**
       * Put a byte array contiguously at an offset in the blob.
       *
       * @param offset location to write values
       * @param x array to write
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jbyte)] out of the blob.
       */
      public native final void putInt8Array(long offset, byte[] x);
      /**
       * Put a short array contiguously at an offset in the blob.
       *
       * @param offset location to write values
       * @param x array to write
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jshort)] out of the blob.
       */
      public native final void putInt16Array(long offset, short[] x);
      /**
       * Put a int array contiguously at an offset in the blob.
       *
       * @param offset location to write values
       * @param x array to write
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jint)] out of the blob.
       */
      public native final void putInt32Array(long offset, int[] x);
      /**
       * Put a long array contiguously at an offset in the blob.
       *
       * @param offset location to write values
       * @param x array to write
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jlong)] out of the blob.
       */
      public native final void putInt64Array(long offset, long[] x);
      /**
       * Put a float array contiguously at an offset in the blob.
       *
       * @param offset location to write values
       * @param x array to write
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jfloat)] out of the blob.
       */
      public native final void putFloatArray(long offset, float[] x);
      /**
       * Put a double array contiguously at an offset in the blob.
       *
       * @param offset location to write values
       * @param x array to write
       * @throws IndexOutOfBoundsException [offset, offset + size * sizeof(jdouble)] out of the blob.
       */
      public native final void putDoubleArray(long offset, double[] x);
  
      /**
       * Write another HwBlob into this blob at the specified location.
       *
       * @param offset location to write value
       * @param blob data to write
       * @throws IndexOutOfBoundsException if [offset, offset + blob's size] outside of the range of
       *     this blob.
       */
      public native final void putBlob(long offset, HwBlob blob);
  
      /**
       * @return current handle of HwBlob for reference in a parcelled binder transaction
       */
      public native final long handle();
  
      /**
       * Convert a primitive to a wrapped array for boolean.
       *
       * @param array from array
       * @return transformed array
       */
      public static Boolean[] wrapArray(@NonNull boolean[] array) {
          final int n = array.length;
          Boolean[] wrappedArray = new Boolean[n];
          for (int i = 0; i < n; ++i) {
            wrappedArray[i] = array[i];
          }
          return wrappedArray;
      }
  
      /**
       * Convert a primitive to a wrapped array for long.
       *
       * @param array from array
       * @return transformed array
       */
      public static Long[] wrapArray(@NonNull long[] array) {
          final int n = array.length;
          Long[] wrappedArray = new Long[n];
          for (int i = 0; i < n; ++i) {
            wrappedArray[i] = array[i];
          }
          return wrappedArray;
      }
  
      /**
       * Convert a primitive to a wrapped array for byte.
       *
       * @param array from array
       * @return transformed array
       */
      public static Byte[] wrapArray(@NonNull byte[] array) {
          final int n = array.length;
          Byte[] wrappedArray = new Byte[n];
          for (int i = 0; i < n; ++i) {
            wrappedArray[i] = array[i];
          }
          return wrappedArray;
      }
  
      /**
       * Convert a primitive to a wrapped array for short.
       *
       * @param array from array
       * @return transformed array
       */
      public static Short[] wrapArray(@NonNull short[] array) {
          final int n = array.length;
          Short[] wrappedArray = new Short[n];
          for (int i = 0; i < n; ++i) {
            wrappedArray[i] = array[i];
          }
          return wrappedArray;
      }
  
      /**
       * Convert a primitive to a wrapped array for int.
       *
       * @param array from array
       * @return transformed array
       */
      public static Integer[] wrapArray(@NonNull int[] array) {
          final int n = array.length;
          Integer[] wrappedArray = new Integer[n];
          for (int i = 0; i < n; ++i) {
            wrappedArray[i] = array[i];
          }
          return wrappedArray;
      }
  
      /**
       * Convert a primitive to a wrapped array for float.
       *
       * @param array from array
       * @return transformed array
       */
      public static Float[] wrapArray(@NonNull float[] array) {
          final int n = array.length;
          Float[] wrappedArray = new Float[n];
          for (int i = 0; i < n; ++i) {
            wrappedArray[i] = array[i];
          }
          return wrappedArray;
      }
  
      /**
       * Convert a primitive to a wrapped array for double.
       *
       * @param array from array
       * @return transformed array
       */
      public static Double[] wrapArray(@NonNull double[] array) {
          final int n = array.length;
          Double[] wrappedArray = new Double[n];
          for (int i = 0; i < n; ++i) {
            wrappedArray[i] = array[i];
          }
          return wrappedArray;
      }
  
      // Returns address of the "freeFunction".
      private static native final long native_init();
  
      private native final void native_setup(int size);
  
      static {
          long freeFunction = native_init();
  
          sNativeRegistry = new NativeAllocationRegistry(
                  HwBlob.class.getClassLoader(),
                  freeFunction,
                  128 /* size */);
      }
  
      private long mNativeContext;
  }
  
  
  