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/* libFLAC - Free Lossless Audio Codec library
* Copyright (C) 2000-2009 Josh Coalson
* Copyright (C) 2011-2016 Xiph.Org Foundation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the Xiph.org Foundation nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <math.h>
#include <string.h>
#include "FLAC/ordinals.h"
#include "share/compat.h"
#include "private/bitmath.h"
#include "private/fixed.h"
#include "private/macros.h"
#include "FLAC/assert.h"
#include "util.h"
static void FLAC__fixed_compute_residual_shift(const FLAC__int32 data[], unsigned data_len, unsigned order, FLAC__int32 residual[])
{
const int idata_len = (int) data_len;
int i;
switch(order) {
case 0:
FLAC__ASSERT(sizeof(residual[0]) == sizeof(data[0]));
memcpy(residual, data, sizeof(residual[0])*data_len);
break;
case 1:
for(i = 0; i < idata_len; i++)
residual[i] = data[i] - data[i-1];
break;
case 2:
for(i = 0; i < idata_len; i++)
residual[i] = data[i] - (data[i-1] << 1) + data[i-2];
break;
case 3:
for(i = 0; i < idata_len; i++)
residual[i] = data[i] - (((data[i-1]-data[i-2])<<1) + (data[i-1]-data[i-2])) - data[i-3];
break;
case 4:
for(i = 0; i < idata_len; i++)
residual[i] = data[i] - ((data[i-1]+data[i-3])<<2) + ((data[i-2]<<2) + (data[i-2]<<1)) + data[i-4];
break;
default:
FLAC__ASSERT(0);
}
}
static void FLAC__fixed_compute_residual_mult(const FLAC__int32 data[], unsigned data_len, unsigned order, FLAC__int32 residual[])
{
const int idata_len = (int)data_len;
int i;
switch(order) {
case 0:
FLAC__ASSERT(sizeof(residual[0]) == sizeof(data[0]));
memcpy(residual, data, sizeof(residual[0])*data_len);
break;
case 1:
for(i = 0; i < idata_len; i++)
residual[i] = data[i] - data[i-1];
break;
case 2:
for(i = 0; i < idata_len; i++)
residual[i] = data[i] - 2*data[i-1] + data[i-2];
break;
case 3:
for(i = 0; i < idata_len; i++)
residual[i] = data[i] - 3*data[i-1] + 3*data[i-2] - data[i-3];
break;
case 4:
for(i = 0; i < idata_len; i++)
residual[i] = data[i] - 4*data[i-1] + 6*data[i-2] - 4*data[i-3] + data[i-4];
break;
default:
FLAC__ASSERT(0);
}
}
static FLAC__int32 data [200000] ;
static FLAC__int32 residual [200000] ;
static unsigned bench_order = 0 ;
static void
bench_shift (void)
{ FLAC__fixed_compute_residual_shift (data, ARRAY_LEN (data), bench_order, residual) ;
}
static void
bench_mult (void)
{ FLAC__fixed_compute_residual_mult (data, ARRAY_LEN (data), bench_order, residual) ;
}
int
main (void)
{ bench_stats stats ;
puts ("") ;
for (bench_order = 2 ; bench_order <= 4 ; bench_order ++) {
memset (&stats, 0, sizeof (stats)) ;
stats.testfunc = bench_shift ;
stats.run_count = 100 ;
stats.loop_count = 10 ;
benchmark_stats (&stats) ;
printf ("shift order %u : %f %f %f %f\n", bench_order, stats.min_time, stats.median_time, stats.mean_time, stats.max_time) ;
memset (&stats, 0, sizeof (stats)) ;
stats.testfunc = bench_mult ;
stats.run_count = 100 ;
stats.loop_count = 10 ;
benchmark_stats (&stats) ;
printf ("mult order %u : %f %f %f %f\n\n", bench_order, stats.min_time, stats.median_time, stats.mean_time, stats.max_time) ;
}
return 0 ;
}
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