1 /* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. 2 * Use of this source code is governed by a BSD-style license that can be 3 * found in the LICENSE file. 4 */ 5 6 #include <stdio.h> 7 #include <stdlib.h> 8 #include <time.h> 9 10 #include "dsp_test_util.h" 11 #include "dsp_util.h" 12 #include "eq2.h" 13 #include "raw.h" 14 15 #ifndef min 16 #define min(a, b) ({ __typeof__(a) _a = (a); \ 17 __typeof__(b) _b = (b); \ 18 _a < _b ? _a : _b; }) 19 #endif 20 21 static double tp_diff(struct timespec *tp2, struct timespec *tp1) 22 { 23 return (tp2->tv_sec - tp1->tv_sec) 24 + (tp2->tv_nsec - tp1->tv_nsec) * 1e-9; 25 } 26 27 /* Processes a buffer of data chunk by chunk using eq2 */ 28 static void process(struct eq2 *eq2, float *data0, float *data1, int count) 29 { 30 int start; 31 for (start = 0; start < count; start += 2048) 32 eq2_process(eq2, data0 + start, data1 + start, 33 min(2048, count - start)); 34 } 35 36 /* Runs the filters on an input file */ 37 static void test_file(const char *input_filename, const char *output_filename) 38 { 39 size_t frames; 40 int i; 41 double NQ = 44100 / 2; /* nyquist frequency */ 42 struct timespec tp1, tp2; 43 struct eq2 *eq2; 44 45 float *data = read_raw(input_filename, &frames); 46 47 /* Set some data to 0 to test for denormals. */ 48 for (i = frames / 10; i < frames; i++) 49 data[i] = 0.0; 50 51 /* eq chain */ 52 eq2 = eq2_new(); 53 eq2_append_biquad(eq2, 0, BQ_PEAKING, 380/NQ, 3, -10); 54 eq2_append_biquad(eq2, 0, BQ_PEAKING, 720/NQ, 3, -12); 55 eq2_append_biquad(eq2, 0, BQ_PEAKING, 1705/NQ, 3, -8); 56 eq2_append_biquad(eq2, 0, BQ_HIGHPASS, 218/NQ, 0.7, -10.2); 57 eq2_append_biquad(eq2, 0, BQ_PEAKING, 580/NQ, 6, -8); 58 eq2_append_biquad(eq2, 0, BQ_HIGHSHELF, 8000/NQ, 3, 2); 59 eq2_append_biquad(eq2, 1, BQ_PEAKING, 450/NQ, 3, -12); 60 eq2_append_biquad(eq2, 1, BQ_PEAKING, 721/NQ, 3, -12); 61 eq2_append_biquad(eq2, 1, BQ_PEAKING, 1800/NQ, 8, -10.2); 62 eq2_append_biquad(eq2, 1, BQ_PEAKING, 580/NQ, 6, -8); 63 eq2_append_biquad(eq2, 1, BQ_HIGHPASS, 250/NQ, 0.6578, 0); 64 eq2_append_biquad(eq2, 1, BQ_HIGHSHELF, 8000/NQ, 0, 2); 65 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp1); 66 process(eq2, data, data + frames, frames); 67 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp2); 68 printf("processing takes %g seconds for %zu samples\n", 69 tp_diff(&tp2, &tp1), frames * 2); 70 eq2_free(eq2); 71 72 write_raw(output_filename, data, frames); 73 free(data); 74 } 75 76 int main(int argc, char **argv) 77 { 78 dsp_enable_flush_denormal_to_zero(); 79 if (dsp_util_has_denormal()) 80 printf("denormal still supported?\n"); 81 else 82 printf("denormal disabled\n"); 83 dsp_util_clear_fp_exceptions(); 84 85 if (argc == 3) 86 test_file(argv[1], argv[2]); 87 else 88 printf("Usage: eq2_test [input.raw output.raw]\n"); 89 90 dsp_util_print_fp_exceptions(); 91 return 0; 92 } 93
