prepare to add file out - does not compile!

src/main.cpp

@@ -1,4 +1,6 @@
+#include <exception>
 #include <stdio.h>
+#include <string>
 #include "ta-log.h"
 #include "engine/engine.h"
 
@@ -98,6 +100,26 @@ bool pWarranty(String) {
   return false;
 }
 
+bool pLoops(String val) {
+  try {
+    int count=std::stoi(val);
+    if (count<0) {
+      e.setLoops(-1);
+    } else {
+      e.setLoops(count+1);
+    }
+  } catch (std::exception& e) {
+    logE("loop count shall be a number.\n");
+    return false;
+  }
+  return true;
+}
+
+bool pOutput(String val) {
+  e.setAudio(DIV_AUDIO_FILE);
+  return e.openAudioOut(val);
+}
+
 bool needsValue(String param) {
   for (size_t i=0; i<params.size(); i++) {
     if (params[i].name==param) {
@@ -111,9 +133,12 @@ void initParams() {
   params.push_back(TAParam("h","help",false,pHelp,"","display this help"));
 
   params.push_back(TAParam("a","audio",true,pAudio,"jack|sdl","set audio engine (SDL by default)"));
+  params.push_back(TAParam("o","output",true,pOutput,"<filename>","output audio to file"));
   params.push_back(TAParam("L","loglevel",true,pLogLevel,"debug|info|warning|error","set the log level (info by default)"));
   params.push_back(TAParam("v","view",true,pView,"pattern|commands|nothing","set visualization (pattern by default)"));
 
+  params.push_back(TAParam("l","loops",true,pLoops,"<count>","set number of loops (-1 means loop forever)"));
+
   params.push_back(TAParam("V","version",false,pVersion,"","view information about Furnace."));
   params.push_back(TAParam("W","warranty",false,pWarranty,"","view warranty disclaimer."));
 }