ref: c53804ea49e082966ae9619d05824098d779ebcb
dir: /tests/benchmark.c/
#include <stdio.h> #include <stdlib.h> #include <string.h> #include <math.h> #include <time.h> #include <samplerate.h> #include "util.h" #include "calc_snr.h" #define BUFFER_LEN (1<<23) #define SNR_LEN (1<<16) static float input [BUFFER_LEN] ; static float output [BUFFER_LEN] ; int main (void) { SRC_DATA src_data ; clock_t start_time, clock_time ; double freq ; int error ; memset (input, 0, sizeof (input)) ; freq = 0.01 ; gen_windowed_sines (1, &freq, 1.0, input, SNR_LEN) ; 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 ; start_time = clock () ; if ((error = src_simple (&src_data, SRC_SINC_BEST_QUALITY, 1)) != 0) { puts (src_strerror (error)) ; exit (1) ; } ; clock_time = clock () - start_time ; 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 ("Time : %5.2f secs.\n", (1.0 * clock_time) / CLOCKS_PER_SEC) ; printf ("Throughput : %d samples/sec\n", (int) floor (src_data.output_frames_gen / ((1.0 * clock_time) / CLOCKS_PER_SEC))) ; printf ("SNR : %6.2f dB\n", calculate_snr (output, SNR_LEN, 1)) ; return 0 ; } /* main */ /* ** Do not edit or modify anything in this comment block. ** The arch-tag line is a file identity tag for the GNU Arch ** revision control system. ** ** arch-tag: f1c7eab4-7340-49a8-8deb-0f66de593cdb */