audio system basic interface

src/audio/NoAudio.cpp

@@ -0,0 +1,18 @@
+#include "NoAudio.h"
+
+using namespace audio;
+
+NoSound::NoSound(std::shared_ptr<PCM> pcm, bool keepPCM) {
+    duration = pcm->getDuration();
+    if (keepPCM) {
+        this->pcm = pcm;
+    }
+}
+
+Sound* NoAudio::createSound(std::shared_ptr<PCM> pcm, bool keepPCM) {
+    return new NoSound(pcm, keepPCM);
+}
+
+NoAudio* NoAudio::create() {
+    return new NoAudio();
+}