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October 5, 2017 11:22
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/* Copyright (c) 2017 Mozilla */ | |
/* Copyright (c) 2017 Jan Weiß */ | |
/* | |
Redistribution and use in source and binary forms, with or without | |
modification, are permitted provided that the following conditions | |
are met: | |
- Redistributions of source code must retain the above copyright | |
notice, this list of conditions and the following disclaimer. | |
- Redistributions in binary form must reproduce the above copyright | |
notice, this list of conditions and the following disclaimer in the | |
documentation and/or other materials provided with the distribution. | |
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR | |
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include "rnnoise.h" | |
#define FRAME_SIZE 480 | |
#define SAMPLE_RATE 48000 | |
#define LOG_VAD_PROBABILITY 0 // In Audacity text label format. | |
int | |
main(int argc, const char* argv[]) | |
{ | |
int i; | |
int first = 1; | |
float x[FRAME_SIZE]; | |
#if LOG_VAD_PROBABILITY | |
const double frame_length = (double)FRAME_SIZE / (double)SAMPLE_RATE; | |
#endif | |
FILE *in_file_handle, *out_file_handle; | |
#if LOG_VAD_PROBABILITY | |
FILE* vad_file_handle; | |
#endif | |
DenoiseState* st; | |
st = rnnoise_create(); | |
if (argc != 3) { | |
fprintf(stderr, "usage: %s <noisy speech> <output denoised>\n", argv[0]); | |
return EXIT_FAILURE; | |
} | |
const char* input_path = argv[1]; | |
const char* output_path = argv[2]; | |
in_file_handle = fopen(input_path, "r"); | |
out_file_handle = fopen(output_path, "w"); | |
#if LOG_VAD_PROBABILITY | |
const size_t output_path_length = strlen(output_path); | |
const char* suffix = ".vad.txt"; | |
const size_t suffix_length = strlen(suffix); | |
const size_t vad_path_length = output_path_length + suffix_length + 1; | |
char vad_path[vad_path_length]; | |
strncat(vad_path, output_path, vad_path_length); | |
strncat(vad_path, suffix, vad_path_length); | |
vad_file_handle = fopen(vad_path, "w"); | |
size_t frame_index = 0; | |
#endif | |
while (1) { | |
if (feof(in_file_handle)) { | |
break; | |
} | |
short tmp[FRAME_SIZE]; | |
size_t samples_read = fread(tmp, sizeof(short), FRAME_SIZE, in_file_handle); | |
if (samples_read == 0) { | |
break; | |
} | |
for (i = 0; i < samples_read; i += 1) { | |
x[i] = (float)tmp[i]; | |
} | |
for (; i < FRAME_SIZE; i += 1) { | |
x[i] = (float)0; | |
} | |
#if LOG_VAD_PROBABILITY | |
float vad_prob = | |
#endif | |
rnnoise_process_frame(st, x, x); | |
#if LOG_VAD_PROBABILITY | |
double frame_start = frame_length * frame_index; | |
double frame_end; | |
if (samples_read == FRAME_SIZE) { | |
frame_end = frame_start + frame_length; | |
} else { | |
frame_end = frame_start + | |
(frame_length * (double)samples_read / (double)FRAME_SIZE); | |
} | |
fprintf(vad_file_handle, "%0.6f\t%0.6f\t%f\n", frame_start, frame_end, | |
vad_prob); | |
#endif | |
for (i = 0; i < samples_read; i += 1) { | |
tmp[i] = x[i]; | |
} | |
if (!first) { | |
fwrite(tmp, sizeof(short), samples_read, out_file_handle); | |
} | |
first = 0; | |
#if LOG_VAD_PROBABILITY | |
frame_index += 1; | |
#endif | |
} | |
rnnoise_destroy(st); | |
fclose(in_file_handle); | |
fclose(out_file_handle); | |
#if LOG_VAD_PROBABILITY | |
fclose(vad_file_handle); | |
#endif | |
return EXIT_SUCCESS; | |
} |
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