+++ /dev/null
-/*
-** Copyright (C) 2005-2011 Erik de Castro Lopo
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-**
-** This program is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-** GNU General Public License for more details.
-**
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/*
-** A simple checksum for short, int and float data.
-*/
-
-#include "sfconfig.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-
-#include <sndfile.h>
-
-#include "regtest.h"
-
-#define BIG_PRIME 999983
-
-#define ARRAY_LEN(x) ((int) (sizeof (x)) / (sizeof ((x) [0])))
-
-static int short_checksum (SNDFILE * file, int start) ;
-static int int_checksum (SNDFILE * file, int start) ;
-static int float_checksum (SNDFILE * file, int start) ;
-
-int
-calc_checksum (SNDFILE * file, const SF_INFO * info)
-{ int start ;
-
- /* Seed the checksum with data from the SF_INFO struct. */
- start = info->samplerate ;
- start = start * BIG_PRIME + info->channels ;
- start = start * BIG_PRIME + info->format ;
-
- switch (info->format & SF_FORMAT_SUBMASK)
- { case SF_FORMAT_FLOAT :
- case SF_FORMAT_DOUBLE :
- return float_checksum (file, start) ;
-
- case SF_FORMAT_PCM_24 :
- case SF_FORMAT_PCM_32 :
- return int_checksum (file, start) ;
-
- default :
- return short_checksum (file, start) ;
- } ;
-
- return 0 ;
-} /* calc_checksum */
-
-/*------------------------------------------------------------------------------
-*/
-
-static union
-{ short s [1 << 16] ;
- int i [1 << 15] ;
- float f [1 << 15] ;
-} data ;
-
-static int
-short_checksum (SNDFILE * file, int start)
-{ int k, count ;
-
- do
- { count = (int) sf_read_short (file, data.s, ARRAY_LEN (data.s)) ;
- for (k = 0 ; k < count ; k++)
- start = start * BIG_PRIME + data.s [k] ;
- }
- while (count > 0) ;
-
- return start ;
-} /* short_checksum */
-
-static int
-int_checksum (SNDFILE * file, int start)
-{ int k, count ;
-
- do
- { count = (int) sf_read_int (file, data.i, ARRAY_LEN (data.i)) ;
- for (k = 0 ; k < count ; k++)
- start = start * BIG_PRIME + data.i [k] ;
- }
- while (count > 0) ;
-
- return start ;
-} /* int_checksum */
-
-static int
-float_checksum (SNDFILE * file, int start)
-{ int k, count ;
-
- do
- { count = (int) sf_read_float (file, data.f, ARRAY_LEN (data.f)) ;
- for (k = 0 ; k < count ; k++)
- start = start * BIG_PRIME + lrintf (0x7FFFFFFF * data.f [k]) ;
- }
- while (count > 0) ;
-
- return start ;
-} /* float_checksum */
-