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+/*---------------------------------------------------------------
+ * Copyright (c) 1999,2000,2001,2002,2003
+ * The Board of Trustees of the University of Illinois
+ * All Rights Reserved.
+ *---------------------------------------------------------------
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software (Iperf) and associated
+ * documentation files (the "Software"), to deal in the Software
+ * without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit
+ * persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ *
+ * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and
+ * the following disclaimers.
+ *
+ *
+ * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimers in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ *
+ * Neither the names of the University of Illinois, NCSA,
+ * nor the names of its contributors may be used to endorse
+ * or promote products derived from this Software without
+ * specific prior written permission.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE CONTIBUTORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * ________________________________________________________________
+ * National Laboratory for Applied Network Research
+ * National Center for Supercomputing Applications
+ * University of Illinois at Urbana-Champaign
+ * http://www.ncsa.uiuc.edu
+ * ________________________________________________________________
+ *
+ * Extractor.h
+ * by Ajay Tirumala (tirumala@ncsa.uiuc.edu)
+ * -------------------------------------------------------------------
+ * Extract data from a file, used to measure the transfer rates
+ * for various stream formats.
+ *
+ * E.g. Use a gzipped file to measure the transfer rates for
+ * compressed data
+ * Use an MPEG file to measure the transfer rates of
+ * Multimedia data formats
+ * Use a plain BMP file to measure the transfer rates of
+ * Uncompressed data
+ *
+ * This is beneficial especially in measuring bandwidth across WAN
+ * links where data compression takes place before data transmission
+ * ------------------------------------------------------------------- */
+
+#ifndef _EXTRACTOR_H
+#define _EXTRACTOR_H
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "Settings.hpp"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+    /**
+     * Constructor
+     * @arg fileName   Name of the file
+     * @arg size       Block size for reading
+     */
+    void Extractor_Initialize( char *fileName, int size, struct thread_Settings *mSettings );
+
+    /**
+     * Constructor
+     * @arg fp         File Pointer
+     * @arg size       Block size for reading
+     */
+    void Extractor_InitializeFile( FILE *fp, int size, struct thread_Settings *mSettings );
+
+
+    /*
+     * Fetches the next data block from
+     * the file
+     * @arg block     Pointer to the data read
+     * @return        Number of bytes read
+     */
+    int Extractor_getNextDataBlock( char *data, struct thread_Settings *mSettings );
+
+
+    /**
+     * Function which determines whether
+     * the file stream is still readable
+     * @return true, if readable; false, if not
+     */
+    int Extractor_canRead( struct thread_Settings *mSettings );
+
+    /**
+     * This is used to reduce the read size
+     * Used in UDP transfer to accomodate the
+     * the header (timestamp)
+     * @arg delta         Size to reduce
+     */
+    void Extractor_reduceReadSize( int delta, struct thread_Settings *mSettings );
+
+    /**
+     * Destructor
+     */
+    void Extractor_Destroy( struct thread_Settings *mSettings );
+#ifdef __cplusplus
+} /* end extern "C" */
+#endif
+
+#endif
+