--- /dev/null
+/*
+** Copyright (c) 2004-2016, Erik de Castro Lopo <erikd@mega-nerd.com>
+** All rights reserved.
+**
+** This code is released under 2-clause BSD license. Please see the
+** file at : https://github.com/erikd/libsamplerate/blob/master/COPYING
+*/
+
+#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 name : %s\n", get_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 : %s\n", get_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 */
+
projects / audio-libsamplerate.git / blobdiff