first attempt of C implementation of fec encoder (not tested yet due to NEON/DOT_PROD not being separable)

dnn/nfec_enc_demo.c

@@ -0,0 +1,46 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "nfec_enc.h"
+
+void usage()
+{
+    printf("nfec_enc_demo <features>");
+    exit(1);
+}
+
+int main(int argc, char **argv)
+{
+    struct NFECEncState enc_state;
+    float feature_buffer[32];
+    float dframe[2 * 20];
+    float latents[80];
+    float initial_state[24];
+    int index = 0;
+    FILE *fid;
+
+    if (argc < 2)
+    {
+        usage();
+    }
+
+    fid = fopen(argv[1], "rb");
+    if (fid == NULL)
+    {
+        fprintf(stderr, "could not open feature file %s\n", argv[1]);
+        usage();
+    }
+
+    while (fread(feature_buffer, sizeof(float), 32, fid) == 32)
+    {
+        memcpy(dframe[16 * index++], feature_buffer, 16*sizeof(float));
+
+        if (index == 2)
+        {
+            nfec_encode_dframe(&enc_state, latents, initial_state, dframe);
+            index = 0;
+        }
+    }
+}
+
+/* gcc -DDISABLE_DOT_PROD nfec_enc_demo.c nfec_enc.c nnet.c nfec_enc_data.c -o nfec_enc_demo */