1 /*---------------------------------------------------------------
2 * Copyright (c) 1999,2000,2001,2002,2003
3 * The Board of Trustees of the University of Illinois
5 *---------------------------------------------------------------
6 * Permission is hereby granted, free of charge, to any person
7 * obtaining a copy of this software (Iperf) and associated
8 * documentation files (the "Software"), to deal in the Software
9 * without restriction, including without limitation the
10 * rights to use, copy, modify, merge, publish, distribute,
11 * sublicense, and/or sell copies of the Software, and to permit
12 * persons to whom the Software is furnished to do
13 * so, subject to the following conditions:
16 * Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and
18 * the following disclaimers.
21 * Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimers in the documentation and/or other materials
24 * provided with the distribution.
27 * Neither the names of the University of Illinois, NCSA,
28 * nor the names of its contributors may be used to endorse
29 * or promote products derived from this Software without
30 * specific prior written permission.
32 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
33 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
34 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
35 * NONINFRINGEMENT. IN NO EVENT SHALL THE CONTIBUTORS OR COPYRIGHT
36 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
37 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
38 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE
39 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 * ________________________________________________________________
41 * National Laboratory for Applied Network Research
42 * National Center for Supercomputing Applications
43 * University of Illinois at Urbana-Champaign
44 * http://www.ncsa.uiuc.edu
45 * ________________________________________________________________
48 * by Ajay Tirumala (tirumala@ncsa.uiuc.edu)
49 * -------------------------------------------------------------------
50 * Extract data from a file, used to measure the transfer rates
51 * for various stream formats.
53 * E.g. Use a gzipped file to measure the transfer rates for
55 * Use an MPEG file to measure the transfer rates of
56 * Multimedia data formats
57 * Use a plain BMP file to measure the transfer rates of
60 * This is beneficial especially in measuring bandwidth across WAN
61 * links where data compression takes place before data transmission
62 * ------------------------------------------------------------------- */
69 #include "Settings.hpp"
77 * @arg fileName Name of the file
78 * @arg size Block size for reading
80 void Extractor_Initialize( char *fileName, int size, thread_Settings *mSettings );
84 * @arg fp File Pointer
85 * @arg size Block size for reading
87 void Extractor_InitializeFile( FILE *fp, int size, thread_Settings *mSettings );
91 * Fetches the next data block from
93 * @arg block Pointer to the data read
94 * @return Number of bytes read
96 int Extractor_getNextDataBlock( char *block, thread_Settings *mSettings );
100 * Function which determines whether
101 * the file stream is still readable
102 * @return true, if readable; false, if not
104 int Extractor_canRead( thread_Settings *mSettings );
107 * This is used to reduce the read size
108 * Used in UDP transfer to accomodate the
109 * the header (timestamp)
110 * @arg delta Size to reduce
112 void Extractor_reduceReadSize( int delta, thread_Settings *mSettings );
117 void Extractor_Destroy( thread_Settings *mSettings );
119 } /* end extern "C" */