ref: 57604aa44454d00cfa05d79c2b349fac25406b48
dir: /tests/throughput_test.c/
/*
** Copyright (C) 2004-2008 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 <math.h>
#include <time.h>
#include <unistd.h>
#include <samplerate.h>
#include "util.h"
#define BUFFER_LEN (1<<16)
static float input [BUFFER_LEN] ;
static float output [BUFFER_LEN] ;
static void
throughput_test (int converter)
{ SRC_DATA src_data ;
clock_t start_time, clock_time ;
double duration ;
long total_frames = 0 ;
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 (1) ;
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) ;
} ;
printf ("%5.2f %10ld\n", duration, lrint (floor (total_frames / duration))) ;
} /* throughput_test */
int
main (void)
{ double freq ;
memset (input, 0, sizeof (input)) ;
freq = 0.01 ;
gen_windowed_sines (1, &freq, 1.0, input, BUFFER_LEN) ;
puts (
"\n"
" Converter Duration Throughput\n"
" -----------------------------------------------------------"
) ;
throughput_test (SRC_ZERO_ORDER_HOLD) ;
throughput_test (SRC_LINEAR) ;
throughput_test (SRC_SINC_FASTEST) ;
throughput_test (SRC_SINC_MEDIUM_QUALITY) ;
throughput_test (SRC_SINC_BEST_QUALITY) ;
puts (
"\n"
" Duration is in seconds.\n"
" Throughput is in samples/sec.\n"
) ;
return 0 ;
} /* main */