ref: 5464b8948e759d0d3a219c783a725be5a53be2fe
dir: /tests/throughput_test.c/
/*
** Copyright (C) 2004-2009 Erik de Castro Lopo <erikd@mega-nerd.com>
**
** 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <samplerate.h>
#include "config.h"
#include "util.h"
#include "float_cast.h"
#define BUFFER_LEN (1<<16)
static float input [BUFFER_LEN] ;
static float output [BUFFER_LEN] ;
static long
throughput_test (int converter, long best_throughput)
{ SRC_DATA src_data ;
clock_t start_time, clock_time ;
double duration ;
long total_frames = 0, throughput ;
int error ;
printf (" %-30s ", src_get_name (converter)) ;
fflush (stdout) ;
src_data.data_in = input ;
src_data.input_frames = ARRAY_LEN (input) ;
src_data.data_out = output ;
src_data.output_frames = ARRAY_LEN (output) ;
src_data.src_ratio = 0.99 ;
sleep (2) ;
start_time = clock () ;
do
{
if ((error = src_simple (&src_data, converter, 1)) != 0)
{ puts (src_strerror (error)) ;
exit (1) ;
} ;
total_frames += src_data.output_frames_gen ;
clock_time = clock () - start_time ;
duration = (1.0 * clock_time) / CLOCKS_PER_SEC ;
}
while (duration < 3.0) ;
if (src_data.input_frames_used != ARRAY_LEN (input))
{ printf ("\n\nLine %d : input frames used %ld should be %d\n", __LINE__, src_data.input_frames_used, ARRAY_LEN (input)) ;
exit (1) ;
} ;
if (fabs (src_data.src_ratio * src_data.input_frames_used - src_data.output_frames_gen) > 2)
{ printf ("\n\nLine %d : input / output length mismatch.\n\n", __LINE__) ;
printf (" input len : %d\n", ARRAY_LEN (input)) ;
printf (" output len : %ld (should be %g +/- 2)\n\n", src_data.output_frames_gen,
floor (0.5 + src_data.src_ratio * src_data.input_frames_used)) ;
exit (1) ;
} ;
throughput = lrint (floor (total_frames / duration)) ;
if (best_throughput == 0)
{ best_throughput = MAX (throughput, best_throughput) ;
printf ("%5.2f %10ld\n", duration, throughput) ;
}
else
{ best_throughput = MAX (throughput, best_throughput) ;
printf ("%5.2f %10ld %10ld\n", duration, throughput, best_throughput) ;
}
return best_throughput ;
} /* throughput_test */
static void
single_run (void)
{
printf ("\n CPU : ") ;
print_cpu_name () ;
puts (
"\n"
" Converter Duration Throughput\n"
" -----------------------------------------------------------"
) ;
throughput_test (SRC_ZERO_ORDER_HOLD, 0) ;
throughput_test (SRC_LINEAR, 0) ;
throughput_test (SRC_SINC_FASTEST, 0) ;
throughput_test (SRC_SINC_MEDIUM_QUALITY, 0) ;
throughput_test (SRC_SINC_BEST_QUALITY, 0) ;
puts ("") ;
return ;
} /* single_run */
static void
multi_run (int run_count)
{ long zero_order_hold = 0, linear = 0 ;
long sinc_fastest = 0, sinc_medium = 0, sinc_best = 0 ;
int k ;
puts (
"\n"
" Converter Duration Throughput Best Throughput\n"
" --------------------------------------------------------------------------------"
) ;
for (k = 0 ; k < run_count ; k++)
{ zero_order_hold = throughput_test (SRC_ZERO_ORDER_HOLD, zero_order_hold) ;
linear = throughput_test (SRC_LINEAR, linear) ;
sinc_fastest = throughput_test (SRC_SINC_FASTEST, sinc_fastest) ;
sinc_medium = throughput_test (SRC_SINC_MEDIUM_QUALITY, sinc_medium) ;
sinc_best = throughput_test (SRC_SINC_BEST_QUALITY, sinc_best) ;
puts ("") ;
/* Let the CPU cool down. We might be running on a laptop. */
sleep (10) ;
} ;
printf ("\n CPU name : ") ;
print_cpu_name () ;
puts (
"\n"
" Converter Best Throughput\n"
" ------------------------------------------------"
) ;
printf (" %-30s %10ld\n", src_get_name (SRC_ZERO_ORDER_HOLD), zero_order_hold) ;
printf (" %-30s %10ld\n", src_get_name (SRC_LINEAR), linear) ;
printf (" %-30s %10ld\n", src_get_name (SRC_SINC_FASTEST), sinc_fastest) ;
printf (" %-30s %10ld\n", src_get_name (SRC_SINC_MEDIUM_QUALITY), sinc_medium) ;
printf (" %-30s %10ld\n", src_get_name (SRC_SINC_BEST_QUALITY), sinc_best) ;
puts ("") ;
} /* multi_run */
static void
usage_exit (const char * argv0)
{ const char * cptr ;
if ((cptr = strrchr (argv0, '/')) != NULL)
argv0 = cptr ;
printf (
"Usage :\n"
" %s - Single run of the throughput test.\n"
" %s --best-of N - Do N runs of test a print bext result.\n"
"\n",
argv0, argv0) ;
exit (0) ;
} /* usage_exit */
int
main (int argc, char ** argv)
{ double freq ;
memset (input, 0, sizeof (input)) ;
freq = 0.01 ;
gen_windowed_sines (1, &freq, 1.0, input, BUFFER_LEN) ;
if (argc == 1)
single_run () ;
else if (argc == 3 && strcmp (argv [1], "--best-of") == 0)
{ int run_count = atoi (argv [2]) ;
if (run_count < 1 || run_count > 20)
{ printf ("Please be sensible. Run count should be in range (1, 10].\n") ;
exit (1) ;
} ;
multi_run (run_count) ;
}
else
usage_exit (argv [0]) ;
puts (
" Duration is in seconds.\n"
" Throughput is in samples/sec (more is better).\n"
) ;
return 0 ;
} /* main */