440 lines
17 KiB
C#
440 lines
17 KiB
C#
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/*
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* CVS Identifier:
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*
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* $Id: BEBufferedRandomAccessFile.java,v 1.18 2001/07/17 13:13:35 grosbois Exp $
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*
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* Interface: RandomAccessIO.java
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*
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* Description: Class for random access I/O (big-endian ordering).
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*
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*
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*
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* COPYRIGHT:
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*
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* This software module was originally developed by Rapha<EFBFBD>l Grosbois and
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* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
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* Askel<EFBFBD>f (Ericsson Radio Systems AB); and Bertrand Berthelot, David
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* Bouchard, F<EFBFBD>lix Henry, Gerard Mozelle and Patrice Onno (Canon Research
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* Centre France S.A) in the course of development of the JPEG2000
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* standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
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* software module is an implementation of a part of the JPEG 2000
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* Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
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* Systems AB and Canon Research Centre France S.A (collectively JJ2000
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* Partners) agree not to assert against ISO/IEC and users of the JPEG
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* 2000 Standard (Users) any of their rights under the copyright, not
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* including other intellectual property rights, for this software module
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* with respect to the usage by ISO/IEC and Users of this software module
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* or modifications thereof for use in hardware or software products
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* claiming conformance to the JPEG 2000 Standard. Those intending to use
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* this software module in hardware or software products are advised that
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* their use may infringe existing patents. The original developers of
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* this software module, JJ2000 Partners and ISO/IEC assume no liability
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* for use of this software module or modifications thereof. No license
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* or right to this software module is granted for non JPEG 2000 Standard
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* conforming products. JJ2000 Partners have full right to use this
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* software module for his/her own purpose, assign or donate this
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* software module to any third party and to inhibit third parties from
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* using this software module for non JPEG 2000 Standard conforming
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* products. This copyright notice must be included in all copies or
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* derivative works of this software module.
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*
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* Copyright (c) 1999/2000 JJ2000 Partners.
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* */
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using System;
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namespace CSJ2K.j2k.io
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{
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/// <summary> This class defines a Buffered Random Access File, where all I/O is
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/// considered to be big-endian. It extends the
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/// <tt>BufferedRandomAccessFile</tt> class.
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///
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/// </summary>
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/// <seealso cref="RandomAccessIO">
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/// </seealso>
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/// <seealso cref="BinaryDataOutput">
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/// </seealso>
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/// <seealso cref="BinaryDataInput">
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/// </seealso>
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/// <seealso cref="BufferedRandomAccessFile">
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///
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/// </seealso>
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public class BEBufferedRandomAccessFile:BufferedRandomAccessFile, RandomAccessIO, EndianType
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{
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/// <summary> Constructor. Always needs a size for the buffer.
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///
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/// </summary>
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/// <param name="file">The file associated with the buffer
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///
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/// </param>
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/// <param name="mode">"r" for read, "rw" or "rw+" for read and write mode ("rw+"
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/// opens the file for update whereas "rw" removes it
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/// before. So the 2 modes are different only if the file
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/// already exists).
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///
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/// </param>
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/// <param name="bufferSize">The number of bytes to buffer
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///
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/// </param>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public BEBufferedRandomAccessFile(System.IO.FileInfo file, System.String mode, int bufferSize):base(file, mode, bufferSize)
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{
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byte_Ordering = CSJ2K.j2k.io.EndianType_Fields.BIG_ENDIAN;
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}
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/// <summary> Constructor. Uses the default value for the byte-buffer size (512
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/// bytes).
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///
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/// </summary>
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/// <param name="file">The file associated with the buffer
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///
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/// </param>
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/// <param name="mode">"r" for read, "rw" or "rw+" for read and write mode ("rw+"
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/// opens the file for update whereas "rw" removes it
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/// before. So the 2 modes are different only if the file
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/// already exists).
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///
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/// </param>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public BEBufferedRandomAccessFile(System.IO.FileInfo file, System.String mode):base(file, mode)
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{
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byte_Ordering = CSJ2K.j2k.io.EndianType_Fields.BIG_ENDIAN;
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}
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/// <summary> Constructor. Always needs a size for the buffer.
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///
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/// </summary>
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/// <param name="name">The name of the file associated with the buffer
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///
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/// </param>
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/// <param name="mode">"r" for read, "rw" or "rw+" for read and write mode ("rw+"
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/// opens the file for update whereas "rw" removes it
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/// before. So the 2 modes are different only if the file
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/// already exists).
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///
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/// </param>
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/// <param name="bufferSize">The number of bytes to buffer
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///
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/// </param>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public BEBufferedRandomAccessFile(System.String name, System.String mode, int bufferSize):base(name, mode, bufferSize)
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{
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byte_Ordering = CSJ2K.j2k.io.EndianType_Fields.BIG_ENDIAN;
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}
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/// <summary> Constructor. Uses the default value for the byte-buffer size (512
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/// bytes).
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///
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/// </summary>
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/// <param name="name">The name of the file associated with the buffer
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///
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/// </param>
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/// <param name="mode">"r" for read, "rw" or "rw+" for read and write mode ("rw+"
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/// opens the file for update whereas "rw" removes it
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/// before. So the 2 modes are different only if the file
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/// already exists).
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///
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/// </param>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public BEBufferedRandomAccessFile(System.String name, System.String mode):base(name, mode)
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{
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byte_Ordering = CSJ2K.j2k.io.EndianType_Fields.BIG_ENDIAN;
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}
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/// <summary> Writes the short value of <tt>v</tt> (i.e., 16 least significant bits)
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/// to the output. Prior to writing, the output should be realigned at the
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/// byte level.
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///
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/// <p>Signed or unsigned data can be written. To write a signed value just
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/// pass the <tt>short</tt> value as an argument. To write unsigned data
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/// pass the <tt>int</tt> value as an argument (it will be automatically
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/// casted, and only the 16 least significant bits will be written).</p>
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///
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/// </summary>
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/// <param name="v">The value to write to the output
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///
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/// </param>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public override void writeShort(int v)
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{
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write(SupportClass.URShift(v, 8));
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write(v);
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}
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/// <summary> Writes the int value of <tt>v</tt> (i.e., the 32 bits) to the
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/// output. Prior to writing, the output should be realigned at the byte
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/// level.
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///
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/// </summary>
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/// <param name="v">The value to write to the output
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///
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/// </param>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public override void writeInt(int v)
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{
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write(SupportClass.URShift(v, 24));
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write(SupportClass.URShift(v, 16));
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write(SupportClass.URShift(v, 8));
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write(v);
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}
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/// <summary> Writes the long value of <tt>v</tt> (i.e., the 64 bits) to the
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/// output. Prior to writing, the output should be realigned at the byte
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/// level.
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///
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/// </summary>
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/// <param name="v">The value to write to the output
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///
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/// </param>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public override void writeLong(long v)
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{
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write((int) (SupportClass.URShift(v, 56)));
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write((int) (SupportClass.URShift(v, 48)));
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write((int) (SupportClass.URShift(v, 40)));
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write((int) (SupportClass.URShift(v, 32)));
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write((int) (SupportClass.URShift(v, 24)));
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write((int) (SupportClass.URShift(v, 16)));
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write((int) (SupportClass.URShift(v, 8)));
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write((int) v);
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}
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/// <summary> Writes the IEEE float value <tt>v</tt> (i.e., 32 bits) to the
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/// output. Prior to writing, the output should be realigned at the byte
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/// level.
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///
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/// </summary>
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/// <param name="v">The value to write to the output
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///
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/// </param>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public override void writeFloat(float v)
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{
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// CONVERSION PROBLEM? OPTIMIZE!!!
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//byte[] floatbytes = BitConverter.GetBytes(v);
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//for (int i = floatbytes.Length-1; i >= 0 ; i--) write(floatbytes[i]);
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//UPGRADE_ISSUE: Method 'java.lang.Float.floatToIntBits' was not converted. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1000_javalangFloatfloatToIntBits_float'"
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//int intV = Float.floatToIntBits(v);
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int intV = BitConverter.ToInt32(BitConverter.GetBytes(v), 0);
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write(SupportClass.URShift(intV, 24));
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write(SupportClass.URShift(intV, 16));
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write(SupportClass.URShift(intV, 8));
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write(intV);
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}
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/// <summary> Writes the IEEE double value <tt>v</tt> (i.e., 64 bits) to the
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/// output. Prior to writing, the output should be realigned at the byte
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/// level.
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///
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/// </summary>
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/// <param name="v">The value to write to the output
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///
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/// </param>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public override void writeDouble(double v)
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{
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//byte[] doublebytes = BitConverter.GetBytes(v);
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//for (int i = doublebytes.Length-1; i >= 0 ; i--) write(doublebytes[i]);
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//UPGRADE_ISSUE: Method 'java.lang.Double.doubleToLongBits' was not converted. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1000_javalangDoubledoubleToLongBits_double'"
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//long longV = Double.doubleToLongBits(v);
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long longV = BitConverter.ToInt64(BitConverter.GetBytes(v), 0);
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write((int) (SupportClass.URShift(longV, 56)));
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write((int) (SupportClass.URShift(longV, 48)));
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write((int) (SupportClass.URShift(longV, 40)));
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write((int) (SupportClass.URShift(longV, 32)));
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write((int) (SupportClass.URShift(longV, 24)));
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write((int) (SupportClass.URShift(longV, 16)));
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write((int) (SupportClass.URShift(longV, 8)));
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write((int) (longV));
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}
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/// <summary> Reads a signed short (i.e. 16 bit) from the input. Prior to reading,
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/// the input should be realigned at the byte level.
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///
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/// </summary>
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/// <returns> The next byte-aligned signed short (16 bit) from the input.
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///
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/// </returns>
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/// <exception cref="java.io.EOFException">If the end-of file was reached before
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/// getting all the necessary data.
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///
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/// </exception>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public override short readShort()
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{
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return (short) ((read() << 8) | (read()));
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}
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/// <summary> Reads an unsigned short (i.e., 16 bit) from the input. It is returned
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/// as an <tt>int</tt> since Java does not have an unsigned short
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/// type. Prior to reading, the input should be realigned at the byte
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/// level.
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///
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/// </summary>
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/// <returns> The next byte-aligned unsigned short (16 bit) from the input,
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/// as an <tt>int</tt>.
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///
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/// </returns>
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/// <exception cref="java.io.EOFException">If the end-of file was reached before
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/// getting all the necessary data.
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///
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/// </exception>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public override int readUnsignedShort()
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{
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return ((read() << 8) | read());
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}
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/// <summary> Reads a signed int (i.e., 32 bit) from the input. Prior to reading, the
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/// input should be realigned at the byte level.
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///
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/// </summary>
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/// <returns> The next byte-aligned signed int (32 bit) from the input.
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///
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/// </returns>
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/// <exception cref="java.io.EOFException">If the end-of file was reached before
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/// getting all the necessary data.
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///
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/// </exception>
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/// <exception cref="java.io.IOException">If an I/O error ocurred.
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///
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/// </exception>
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public override int readInt()
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{
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return ((read() << 24) | (read() << 16) | (read() << 8) | read());
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}
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/// <summary> Reads an unsigned int (i.e., 32 bit) from the input. It is returned as
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/// a <tt>long</tt> since Java does not have an unsigned short type. Prior
|
|||
|
|
/// to reading, the input should be realigned at the byte level.
|
|||
|
|
///
|
|||
|
|
/// </summary>
|
|||
|
|
/// <returns> The next byte-aligned unsigned int (32 bit) from the input, as
|
|||
|
|
/// a <tt>long</tt>.
|
|||
|
|
///
|
|||
|
|
/// </returns>
|
|||
|
|
/// <exception cref="java.io.EOFException">If the end-of file was reached before
|
|||
|
|
/// getting all the necessary data.
|
|||
|
|
///
|
|||
|
|
/// </exception>
|
|||
|
|
/// <exception cref="java.io.IOException">If an I/O error ocurred.
|
|||
|
|
///
|
|||
|
|
/// </exception>
|
|||
|
|
public override long readUnsignedInt()
|
|||
|
|
{
|
|||
|
|
return (long) ((read() << 24) | (read() << 16) | (read() << 8) | read());
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary> Reads a signed long (i.e., 64 bit) from the input. Prior to reading,
|
|||
|
|
/// the input should be realigned at the byte level.
|
|||
|
|
///
|
|||
|
|
/// </summary>
|
|||
|
|
/// <returns> The next byte-aligned signed long (64 bit) from the input.
|
|||
|
|
///
|
|||
|
|
/// </returns>
|
|||
|
|
/// <exception cref="java.io.EOFException">If the end-of file was reached before
|
|||
|
|
/// getting all the necessary data.
|
|||
|
|
///
|
|||
|
|
/// </exception>
|
|||
|
|
/// <exception cref="java.io.IOException">If an I/O error ocurred.
|
|||
|
|
///
|
|||
|
|
/// </exception>
|
|||
|
|
public override long readLong()
|
|||
|
|
{
|
|||
|
|
//byte[] longbytes = new byte[8];
|
|||
|
|
//for (int i = longbytes.Length-1; i >= 0; i--) longbytes[i] = read();
|
|||
|
|
//return BitConverter.ToInt64(longbytes, 0);
|
|||
|
|
return ((long)(((ulong) read() << 56) | ((ulong) read() << 48) | ((ulong) read() << 40) | ((ulong) read() << 32) | ((ulong) read() << 24) | ((ulong) read() << 16) | ((ulong) read() << 8) | ((ulong) read())));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary> Reads an IEEE single precision (i.e., 32 bit) floating-point number
|
|||
|
|
/// from the input. Prior to reading, the input should be realigned at the
|
|||
|
|
/// byte level.
|
|||
|
|
///
|
|||
|
|
/// </summary>
|
|||
|
|
/// <returns> The next byte-aligned IEEE float (32 bit) from the input.
|
|||
|
|
///
|
|||
|
|
/// </returns>
|
|||
|
|
/// <exception cref="java.io.EOFException">If the end-of file was reached before
|
|||
|
|
/// getting all the necessary data.
|
|||
|
|
///
|
|||
|
|
/// </exception>
|
|||
|
|
/// <exception cref="java.io.IOException">If an I/O error ocurred.
|
|||
|
|
///
|
|||
|
|
/// </exception>
|
|||
|
|
public override float readFloat()
|
|||
|
|
{
|
|||
|
|
// CONVERSION PROBLEM? OPTIMIZE!!!
|
|||
|
|
//byte[] floatbytes = new byte[4];
|
|||
|
|
//for (int i = floatbytes.Length-1; i >= 0 ; i--) floatbytes[i] = (byte)read();
|
|||
|
|
//return BitConverter.ToSingle(floatbytes, 0);
|
|||
|
|
|
|||
|
|
//UPGRADE_ISSUE: Method 'java.lang.Float.intBitsToFloat' was not converted. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1000_javalangFloatintBitsToFloat_int'"
|
|||
|
|
//return Float.intBitsToFloat((read() << 24) | (read() << 16) | (read() << 8) | (read()));
|
|||
|
|
return BitConverter.ToSingle(BitConverter.GetBytes((read() << 24) | (read() << 16) | (read() << 8) | (read())), 0);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary> Reads an IEEE double precision (i.e., 64 bit) floating-point number
|
|||
|
|
/// from the input. Prior to reading, the input should be realigned at the
|
|||
|
|
/// byte level.
|
|||
|
|
///
|
|||
|
|
/// </summary>
|
|||
|
|
/// <returns> The next byte-aligned IEEE double (64 bit) from the input.
|
|||
|
|
///
|
|||
|
|
/// </returns>
|
|||
|
|
/// <exception cref="java.io.EOFException">If the end-of file was reached before
|
|||
|
|
/// getting all the necessary data.
|
|||
|
|
///
|
|||
|
|
/// </exception>
|
|||
|
|
/// <exception cref="java.io.IOException">If an I/O error ocurred.
|
|||
|
|
///
|
|||
|
|
/// </exception>
|
|||
|
|
public override double readDouble()
|
|||
|
|
{
|
|||
|
|
// CONVERSION PROBLEM? OPTIMIZE!!!
|
|||
|
|
//byte[] doublebytes = new byte[8];
|
|||
|
|
//for (int i = doublebytes.Length-1; i >=0 ; i--) doublebytes[i] = (byte)read();
|
|||
|
|
//return BitConverter.ToDouble(doublebytes, 0);
|
|||
|
|
|
|||
|
|
//UPGRADE_ISSUE: Method 'java.lang.Double.longBitsToDouble' was not converted. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1000_javalangDoublelongBitsToDouble_long'"
|
|||
|
|
//return Double.longBitsToDouble(((long) read() << 56) | ((long) read() << 48) | ((long) read() << 40) | ((long) read() << 32) | ((long) read() << 24) | ((long) read() << 16) | ((long) read() << 8) | ((long) read()));
|
|||
|
|
|
|||
|
|
return BitConverter.ToDouble(BitConverter.GetBytes(((long) read() << 56) | ((long) read() << 48) | ((long) read() << 40) | ((long) read() << 32) | ((long) read() << 24) | ((long) read() << 16) | ((long) read() << 8) | ((long) read())), 0);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary> Returns a string of information about the file and the endianess
|
|||
|
|
///
|
|||
|
|
/// </summary>
|
|||
|
|
public override System.String ToString()
|
|||
|
|
{
|
|||
|
|
return base.ToString() + "\nBig-Endian ordering";
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|