shithub: opus

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added -addlpc option to lpcnet_demo

--- a/dnn/lpcnet_demo.c

+++ b/dnn/lpcnet_demo.c

@@ -39,6 +39,7 @@

 #define MODE_FEATURES 2

 #define MODE_SYNTHESIS 3

 #define MODE_PLC 4

+#define MODE_ADDLPC 5

 void usage(void) {

     fprintf(stderr, "usage: lpcnet_demo -encode <input.pcm> <compressed.lpcnet>\n");

@@ -46,7 +47,8 @@

     fprintf(stderr, "       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\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, "       causal_dc:    normal (causal) PLC with DC offset compensation\n");

@@ -83,6 +85,8 @@

         }

         argv+=2;

         argc-=2;

+    } else if (strcmp(argv[1], "-addlpc") == 0){

+        mode=MODE_ADDLPC;

     } else {

         usage();

     }

@@ -187,6 +191,17 @@

           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");

     }

-- 

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