ref: d7fab5e89289b28e1055d10f348f6d358fa84a00
dir: /dnn/lpcnet_demo.c/
/* Copyright (c) 2018 Mozilla */
/*
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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "arch.h"
#include "lpcnet.h"
#include "freq.h"
#include "os_support.h"
#include "fargan.h"
#include "cpu_support.h"
#ifdef USE_WEIGHTS_FILE
# if __unix__
# include <fcntl.h>
# include <sys/mman.h>
# include <unistd.h>
# include <sys/stat.h>
/* When available, mmap() is preferable to reading the file, as it leads to
better resource utilization, especially if multiple processes are using the same
file (mapping will be shared in cache). */
void *load_blob(const char *filename, int *len) {
int fd;
void *data;
struct stat st;
if (stat(filename, &st)) {
*len = 0;
return NULL;
}
*len = st.st_size;
fd = open(filename, O_RDONLY);
if (fd<0) {
*len = 0;
return NULL;
}
data = mmap(NULL, *len, PROT_READ, MAP_SHARED, fd, 0);
if (data == MAP_FAILED) {
*len = 0;
data = NULL;
}
close(fd);
return data;
}
void free_blob(void *blob, int len) {
if (blob) munmap(blob, len);
}
# else
void *load_blob(const char *filename, int *len) {
FILE *file;
void *data;
file = fopen(filename, "r");
if (file == NULL)
{
perror("could not open blob file");
*len = 0;
return NULL;
}
fseek(file, 0L, SEEK_END);
*len = ftell(file);
fseek(file, 0L, SEEK_SET);
if (*len <= 0) {
*len = 0;
return NULL;
}
data = malloc(*len);
if (!data) {
*len = 0;
return NULL;
}
*len = fread(data, 1, *len, file);
return data;
}
void free_blob(void *blob, int len) {
free(blob);
(void)len;
}
# endif
#endif
#define MODE_FEATURES 2
/*#define MODE_SYNTHESIS 3*/
#define MODE_ADDLPC 5
#define MODE_FWGAN_SYNTHESIS 6
#define MODE_FARGAN_SYNTHESIS 7
void usage(void) {
fprintf(stderr, "usage: lpcnet_demo -features <input.pcm> <features.f32>\n");
fprintf(stderr, " lpcnet_demo -fargan-synthesis <features.f32> <output.pcm>\n");
fprintf(stderr, " lpcnet_demo -addlpc <features_without_lpc.f32> <features_with_lpc.lpc>\n\n");
fprintf(stderr, " plc_options:\n");
fprintf(stderr, " causal: normal (causal) PLC\n");
fprintf(stderr, " codec: normal (causal) PLC without cross-fade (will glitch)\n");
exit(1);
}
int main(int argc, char **argv) {
int mode=0;
int arch;
FILE *fin, *fout;
#ifdef USE_WEIGHTS_FILE
int len;
void *data;
const char *filename = "weights_blob.bin";
#endif
arch = opus_select_arch();
if (argc < 4) usage();
if (strcmp(argv[1], "-features") == 0) mode=MODE_FEATURES;
else if (strcmp(argv[1], "-fargan-synthesis") == 0) mode=MODE_FARGAN_SYNTHESIS;
else if (strcmp(argv[1], "-addlpc") == 0){
mode=MODE_ADDLPC;
} else {
usage();
}
if (argc != 4) usage();
fin = fopen(argv[2], "rb");
if (fin == NULL) {
fprintf(stderr, "Can't open %s\n", argv[2]);
exit(1);
}
fout = fopen(argv[3], "wb");
if (fout == NULL) {
fprintf(stderr, "Can't open %s\n", argv[3]);
exit(1);
}
#ifdef USE_WEIGHTS_FILE
data = load_blob(filename, &len);
#endif
if (mode == MODE_FEATURES) {
LPCNetEncState *net;
net = lpcnet_encoder_create();
while (1) {
float features[NB_TOTAL_FEATURES];
opus_int16 pcm[LPCNET_FRAME_SIZE];
size_t ret;
ret = fread(pcm, sizeof(pcm[0]), LPCNET_FRAME_SIZE, fin);
if (feof(fin) || ret != LPCNET_FRAME_SIZE) break;
lpcnet_compute_single_frame_features(net, pcm, features, arch);
fwrite(features, sizeof(float), NB_TOTAL_FEATURES, fout);
}
lpcnet_encoder_destroy(net);
} else if (mode == MODE_FARGAN_SYNTHESIS) {
FARGANState fargan;
size_t ret, i;
float in_features[5*NB_TOTAL_FEATURES];
float zeros[320] = {0};
fargan_init(&fargan);
#ifdef USE_WEIGHTS_FILE
fargan_load_model(&fargan, data, len);
#endif
/* uncomment the following to align with Python code */
/*ret = fread(&in_features[0], sizeof(in_features[0]), NB_TOTAL_FEATURES, fin);*/
for (i=0;i<5;i++) {
ret = fread(&in_features[i*NB_FEATURES], sizeof(in_features[0]), NB_TOTAL_FEATURES, fin);
}
fargan_cont(&fargan, zeros, in_features);
while (1) {
float features[NB_FEATURES];
float fpcm[LPCNET_FRAME_SIZE];
opus_int16 pcm[LPCNET_FRAME_SIZE];
ret = fread(in_features, sizeof(features[0]), NB_TOTAL_FEATURES, fin);
if (feof(fin) || ret != NB_TOTAL_FEATURES) break;
OPUS_COPY(features, in_features, NB_FEATURES);
fargan_synthesize(&fargan, fpcm, features);
for (i=0;i<LPCNET_FRAME_SIZE;i++) pcm[i] = (int)floor(.5 + MIN32(32767, MAX32(-32767, 32768.f*fpcm[i])));
fwrite(pcm, sizeof(pcm[0]), LPCNET_FRAME_SIZE, fout);
}
} else if (mode == MODE_ADDLPC) {
float features[36];
size_t ret;
while (1) {
ret = fread(features, sizeof(features[0]), 36, fin);
if (ret != 36 || feof(fin)) break;
lpc_from_cepstrum(&features[20], &features[0]);
fwrite(features, sizeof(features[0]), 36, fout);
}
} else {
fprintf(stderr, "unknown action\n");
}
fclose(fin);
fclose(fout);
#ifdef USE_WEIGHTS_FILE
free_blob(data, len);
#endif
return 0;
}