/*--------------------------------------------------------------- * 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
* ------------------------------------------------------------------- */
/* * Fetches the next data block from * the file * @arg block Pointer to the data read * @return Number of bytes read
*/ int Extractor_getNextDataBlock( char *block, thread_Settings *mSettings );
/** * Function which determines whether * the file stream is still readable * @return true, if readable; false, if not
*/ int Extractor_canRead( 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, thread_Settings *mSettings );
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