ref: 62cd1c963baf1fdccb990260bb5dc53b780e45eb
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"
#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). */
unsigned char *load_blob(const char *filename, int *len) {
int fd;
unsigned char *data;
struct stat st;
stat(filename, &st);
*len = st.st_size;
fd = open(filename, O_RDONLY);
data = mmap(NULL, *len, PROT_READ, MAP_SHARED, fd, 0);
close(fd);
return data;
}
void free_blob(unsigned char *blob, int len) {
munmap(blob, len);
}
# else
unsigned char *load_blob(const char *filename, int *len) {
FILE *file;
unsigned char *data;
file = fopen(filename, "r");
fseek(file, 0L, SEEK_END);
*len = ftell(file);
fseek(file, 0L, SEEK_SET);
if (*len <= 0) return NULL;
data = malloc(*len);
*len = fread(data, 1, *len, file);
return data;
}
void free_blob(unsigned char *blob, int len) {
free(blob);
(void)len;
}
# endif
#endif
#define MODE_FEATURES 2
#define MODE_SYNTHESIS 3
#define MODE_PLC 4
#define MODE_ADDLPC 5
void usage(void) {
fprintf(stderr, "usage: lpcnet_demo -features <input.pcm> <features.f32>\n");
fprintf(stderr, " lpcnet_demo -synthesis <features.f32> <output.pcm>\n");
fprintf(stderr, " lpcnet_demo -plc <plc_options> <percent> <input.pcm> <output.pcm>\n");
fprintf(stderr, " lpcnet_demo -plc_file <plc_options> <percent> <input.pcm> <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;
int plc_percent=0;
FILE *fin, *fout;
FILE *plc_file = NULL;
const char *plc_options;
int plc_flags=-1;
#ifdef USE_WEIGHTS_FILE
int len;
unsigned char *data;
const char *filename = "weights_blob.bin";
#endif
if (argc < 4) usage();
if (strcmp(argv[1], "-features") == 0) mode=MODE_FEATURES;
else if (strcmp(argv[1], "-synthesis") == 0) mode=MODE_SYNTHESIS;
else if (strcmp(argv[1], "-plc") == 0) {
mode=MODE_PLC;
plc_options = argv[2];
plc_percent = atoi(argv[3]);
argv+=2;
argc-=2;
} else if (strcmp(argv[1], "-plc_file") == 0) {
mode=MODE_PLC;
plc_options = argv[2];
plc_file = fopen(argv[3], "r");
if (!plc_file) {
fprintf(stderr, "Can't open %s\n", argv[3]);
exit(1);
}
argv+=2;
argc-=2;
} else if (strcmp(argv[1], "-addlpc") == 0){
mode=MODE_ADDLPC;
} else {
usage();
}
if (mode == MODE_PLC) {
if (strcmp(plc_options, "causal")==0) plc_flags = LPCNET_PLC_CAUSAL;
else if (strcmp(plc_options, "codec")==0) plc_flags = LPCNET_PLC_CODEC;
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);
fwrite(features, sizeof(float), NB_TOTAL_FEATURES, fout);
}
lpcnet_encoder_destroy(net);
} else if (mode == MODE_SYNTHESIS) {
LPCNetState *net;
net = lpcnet_create();
#ifdef USE_WEIGHTS_FILE
lpcnet_load_model(net, data, len);
#endif
while (1) {
float in_features[NB_TOTAL_FEATURES];
float features[NB_FEATURES];
opus_int16 pcm[LPCNET_FRAME_SIZE];
size_t ret;
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);
lpcnet_synthesize(net, features, pcm, LPCNET_FRAME_SIZE);
fwrite(pcm, sizeof(pcm[0]), LPCNET_FRAME_SIZE, fout);
}
lpcnet_destroy(net);
} else if (mode == MODE_PLC) {
opus_int16 pcm[FRAME_SIZE];
int count=0;
int loss=0;
int skip=0, extra=0;
LPCNetPLCState *net;
net = lpcnet_plc_create(plc_flags);
#ifdef USE_WEIGHTS_FILE
lpcnet_plc_load_model(net, data, len);
#endif
while (1) {
size_t ret;
ret = fread(pcm, sizeof(pcm[0]), FRAME_SIZE, fin);
if (feof(fin) || ret != FRAME_SIZE) break;
if (count % 2 == 0) {
if (plc_file != NULL) ret = fscanf(plc_file, "%d", &loss);
else loss = rand() < RAND_MAX*(float)plc_percent/100.f;
}
if (loss) lpcnet_plc_conceal(net, pcm);
else lpcnet_plc_update(net, pcm);
fwrite(&pcm[skip], sizeof(pcm[0]), FRAME_SIZE-skip, fout);
skip = 0;
count++;
}
if (extra) {
lpcnet_plc_conceal(net, pcm);
fwrite(pcm, sizeof(pcm[0]), extra, fout);
}
lpcnet_plc_destroy(net);
} 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);
if (plc_file) fclose(plc_file);
#ifdef USE_WEIGHTS_FILE
free_blob(data, len);
#endif
return 0;
}