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 #include <stdio.h> 6 #include <stdlib.h> 7 #include <time.h> 8 9 #include "dsp_test_util.h" 10 #include "dsp_util.h" 11 #include "drc.h" 12 #include "raw.h" 13 14 #ifndef min 15 #define min(a, b) ({ __typeof__(a) _a = (a); \ 16 __typeof__(b) _b = (b); \ 17 _a < _b ? _a : _b; }) 18 #endif 19 20 static double tp_diff(struct timespec *tp2, struct timespec *tp1) 21 { 22 return (tp2->tv_sec - tp1->tv_sec) 23 + (tp2->tv_nsec - tp1->tv_nsec) * 1e-9; 24 } 25 26 static void process(struct drc *drc, float *buf, size_t frames) 27 { 28 struct timespec tp1, tp2; 29 int start; 30 float *data[2]; 31 int chunk; 32 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp1); 33 for (start = 0; start < frames;) { 34 data[0] = buf + start; 35 data[1] = buf + start + frames; 36 chunk = min(DRC_PROCESS_MAX_FRAMES, frames - start); 37 drc_process(drc, data, chunk); 38 start += chunk; 39 } 40 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tp2); 41 printf("drc processing takes %g seconds for %zu samples\n", 42 tp_diff(&tp2, &tp1), frames * 2); 43 } 44 45 int main(int argc, char **argv) 46 { 47 double NQ = 44100 / 2; /* nyquist frequency */ 48 struct drc *drc; 49 size_t frames; 50 float *buf; 51 52 if (argc != 3) { 53 printf("Usage: drc_test input.raw output.raw\n"); 54 return 1; 55 } 56 57 dsp_enable_flush_denormal_to_zero(); 58 dsp_util_clear_fp_exceptions(); 59 drc = drc_new(44100); 60 61 drc->emphasis_disabled = 0; 62 drc_set_param(drc, 0, PARAM_CROSSOVER_LOWER_FREQ, 0); 63 drc_set_param(drc, 0, PARAM_ENABLED, 1); 64 drc_set_param(drc, 0, PARAM_THRESHOLD, -29); 65 drc_set_param(drc, 0, PARAM_KNEE, 3); 66 drc_set_param(drc, 0, PARAM_RATIO, 6.677); 67 drc_set_param(drc, 0, PARAM_ATTACK, 0.02); 68 drc_set_param(drc, 0, PARAM_RELEASE, 0.2); 69 drc_set_param(drc, 0, PARAM_POST_GAIN, -7); 70 71 drc_set_param(drc, 1, PARAM_CROSSOVER_LOWER_FREQ, 200 / NQ); 72 drc_set_param(drc, 1, PARAM_ENABLED, 1); 73 drc_set_param(drc, 1, PARAM_THRESHOLD, -32); 74 drc_set_param(drc, 1, PARAM_KNEE, 23); 75 drc_set_param(drc, 1, PARAM_RATIO, 12); 76 drc_set_param(drc, 1, PARAM_ATTACK, 0.02); 77 drc_set_param(drc, 1, PARAM_RELEASE, 0.2); 78 drc_set_param(drc, 1, PARAM_POST_GAIN, 0.7); 79 80 drc_set_param(drc, 2, PARAM_CROSSOVER_LOWER_FREQ, 1200 / NQ); 81 drc_set_param(drc, 2, PARAM_ENABLED, 1); 82 drc_set_param(drc, 2, PARAM_THRESHOLD, -24); 83 drc_set_param(drc, 2, PARAM_KNEE, 30); 84 drc_set_param(drc, 2, PARAM_RATIO, 1); 85 drc_set_param(drc, 2, PARAM_ATTACK, 0.001); 86 drc_set_param(drc, 2, PARAM_RELEASE, 1); 87 drc_set_param(drc, 2, PARAM_POST_GAIN, 0); 88 89 drc_init(drc); 90 buf = read_raw(argv[1], &frames); 91 process(drc, buf, frames); 92 write_raw(argv[2], buf, frames); 93 drc_free(drc); 94 free(buf); 95 dsp_util_print_fp_exceptions(); 96 return 0; 97 } 98
