diff --git a/dnn/Makefile b/dnn/Makefile
index 32f9aca31669f004e41399752b7c27735aec8995..4574e8bb22dd6e4095b18d05eb057d55c76c60b5 100644
--- a/dnn/Makefile
+++ b/dnn/Makefile
@@ -20,7 +20,7 @@ ifneq ($(NEON),0)
CFLAGS+=-mfpu=neon -march=armv8-a -mtune=cortex-a53
endif
-all: dump_data test_lpcnet test_vec
+all: dump_data lpcnet_demo test_lpcnet test_vec
dump_data_objs := src/common.o src/dump_data.o src/freq.o src/kiss_fft.o src/pitch.o src/celt_lpc.o src/lpcnet_dec.o src/lpcnet_enc.o src/ceps_codebooks.o
dump_data_deps := $(dump_data_objs:.o=.d)
@@ -36,6 +36,13 @@ test_lpcnet: $(test_lpcnet_objs)
-include $(test_lpcnet_deps)
+lpcnet_demo_objs := src/common.o src/lpcnet_demo.o src/lpcnet.o src/nnet.o src/nnet_data.o src/freq.o src/kiss_fft.o src/pitch.o src/celt_lpc.o src/lpcnet_dec.o src/ceps_codebooks.o src/lpcnet_enc.o
+lpcnet_demo_deps := $(lpcnet_demo_objs:.o=.d)
+lpcnet_demo: $(lpcnet_demo_objs)
+ gcc -o $@ $(CFLAGS) $(lpcnet_demo_objs) -lm
+
+-include $(lpcnet_demo_deps)
+
test_vec_objs := src/test_vec.o
test_vec_deps := $(test_vec_objs:.o=.d)
test_vec: $(test_vec_objs)
diff --git a/dnn/lpcnet_demo.c b/dnn/lpcnet_demo.c
new file mode 100644
index 0000000000000000000000000000000000000000..43dd5d558a344193fb1ca4d298ed311a3e5be9f8
--- /dev/null
+++ b/dnn/lpcnet_demo.c
@@ -0,0 +1,115 @@
+/* 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.
+*/
+
+#include <math.h>
+#include <stdio.h>
+#include "arch.h"
+#include "lpcnet.h"
+#include "freq.h"
+
+#define MODE_ENCODE 0
+#define MODE_DECODE 1
+#define MODE_FEATURES 2
+#define MODE_SYNTHESIS 3
+
+int main(int argc, char **argv) {
+ int mode;
+ FILE *fin, *fout;
+ if (argc != 4)
+ {
+ fprintf(stderr, "usage: lpcnet_demo -encode <input.pcm> <compressed.lpcnet>\n");
+ fprintf(stderr, " lpcnet_demo -decode <compressed.lpcnet> <output.pcm>\n");
+ fprintf(stderr, " lpcnet_demo -features <input.pcm> <features.f32>\n");
+ fprintf(stderr, " lpcnet_demo -synthesis <features.f32> <output.pcm>\n");
+ return 0;
+ }
+ if (strcmp(argv[1], "-encode") == 0) mode=MODE_ENCODE;
+ else if (strcmp(argv[1], "-decode") == 0) mode=MODE_DECODE;
+ else if (strcmp(argv[1], "-features") == 0) mode=MODE_FEATURES;
+ else if (strcmp(argv[1], "-synthesis") == 0) mode=MODE_SYNTHESIS;
+ else {
+ exit(1);
+ }
+ 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);
+ }
+
+ if (mode == MODE_ENCODE) {
+ LPCNetEncState *net;
+ net = lpcnet_encoder_create();
+ while (1) {
+ unsigned char buf[8];
+ short pcm[4*FRAME_SIZE];
+ fread(pcm, sizeof(pcm[0]), 4*FRAME_SIZE, fin);
+ if (feof(fin)) break;
+ lpcnet_encode(net, pcm, buf);
+ fwrite(buf, 1, 8, fout);
+ }
+ lpcnet_encoder_destroy(net);
+ } else if (mode == MODE_DECODE) {
+ LPCNetDecState *net;
+ net = lpcnet_decoder_create();
+ while (1) {
+ unsigned char buf[8];
+ short pcm[4*FRAME_SIZE];
+ fread(buf, sizeof(buf[0]), 8, fin);
+ if (feof(fin)) break;
+ lpcnet_decode(net, buf, pcm);
+ fwrite(pcm, sizeof(pcm[0]), 4*FRAME_SIZE, fout);
+ }
+ lpcnet_decoder_destroy(net);
+ } else if (mode == MODE_FEATURES) {
+ fprintf(stderr, "-features not yet implemented\n");
+ } else if (mode == MODE_SYNTHESIS) {
+ LPCNetState *net;
+ net = lpcnet_create();
+ while (1) {
+ float in_features[NB_TOTAL_FEATURES];
+ float features[NB_FEATURES];
+ short pcm[FRAME_SIZE];
+ fread(in_features, sizeof(features[0]), NB_TOTAL_FEATURES, fin);
+ if (feof(fin)) break;
+ RNN_COPY(features, in_features, NB_FEATURES);
+ RNN_CLEAR(&features[18], 18);
+ lpcnet_synthesize(net, pcm, features, FRAME_SIZE);
+ fwrite(pcm, sizeof(pcm[0]), FRAME_SIZE, fout);
+ }
+ lpcnet_destroy(net);
+ } else {
+ fprintf(stderr, "unknown action\n");
+ }
+ fclose(fin);
+ fclose(fout);
+ return 0;
+}