ref: 313685a7a94db5e8147c470ced811f03f3d2733c
dir: /tests/multichan_throughput_test.c/
/* ** Copyright (c) 2008-2016, Erik de Castro Lopo <[email protected]> ** 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<<17) static float input [BUFFER_LEN] ; static float output [BUFFER_LEN] ; static long throughput_test (int converter, int channels, long best_throughput) { SRC_DATA src_data ; clock_t start_time, clock_time ; double duration ; long total_frames = 0, throughput ; int error ; printf (" %-30s %2d ", src_get_name (converter), channels) ; fflush (stdout) ; src_data.data_in = input ; src_data.input_frames = ARRAY_LEN (input) / channels ; src_data.data_out = output ; src_data.output_frames = ARRAY_LEN (output) / channels ; src_data.src_ratio = 0.99 ; sleep (2) ; start_time = clock () ; do { if ((error = src_simple (&src_data, converter, channels)) != 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 < 5.0) ; if (src_data.input_frames_used != src_data.input_frames) { printf ("\n\nLine %d : input frames used %ld should be %ld\n", __LINE__, src_data.input_frames_used, src_data.input_frames) ; 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) / channels) ; 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) { const int max_channels = 10 ; int k ; printf ("\n CPU name : %s\n", get_cpu_name ()) ; puts ( "\n" " Converter Channels Duration Throughput\n" " ---------------------------------------------------------------------" ) ; for (k = 1 ; k <= max_channels / 2 ; k++) throughput_test (SRC_SINC_FASTEST, k, 0) ; puts ("") ; for (k = 1 ; k <= max_channels / 2 ; k++) throughput_test (SRC_SINC_MEDIUM_QUALITY, k, 0) ; puts ("") ; for (k = 1 ; k <= max_channels ; k++) throughput_test (SRC_SINC_BEST_QUALITY, k, 0) ; puts ("") ; return ; } /* single_run */ static void multi_run (int run_count) { int k, ch ; printf ("\n CPU name : %s\n", get_cpu_name ()) ; puts ( "\n" " Converter Channels Duration Throughput Best Throughput\n" " ----------------------------------------------------------------------------------------" ) ; for (ch = 1 ; ch <= 5 ; ch++) { long sinc_fastest = 0, sinc_medium = 0, sinc_best = 0 ; for (k = 0 ; k < run_count ; k++) { sinc_fastest = throughput_test (SRC_SINC_FASTEST, ch, sinc_fastest) ; sinc_medium = throughput_test (SRC_SINC_MEDIUM_QUALITY, ch, sinc_medium) ; sinc_best = throughput_test (SRC_SINC_BEST_QUALITY, ch, sinc_best) ; puts ("") ; /* Let the CPU cool down. We might be running on a laptop. */ sleep (10) ; } ; puts ( "\n" " Converter Best Throughput\n" " ------------------------------------------------" ) ; 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 frames/sec (more is better).\n" ) ; return 0 ; } /* main */