Switch to PortAudio for audio playback

app/streaming/audio/audio.cpp

@@ -1,12 +1,21 @@
 #include "../session.hpp"
 #include "renderers/renderer.h"
+
+#ifdef HAVE_PORTAUDIO
+#include "renderers/portaudiorenderer.h"
+#else
 #include "renderers/sdl.h"
+#endif
 
 #include <Limelight.h>
 
 IAudioRenderer* Session::createAudioRenderer()
 {
+#ifdef HAVE_PORTAUDIO
+    return new PortAudioRenderer();
+#else
     return new SdlAudioRenderer();
+#endif
 }
 
 bool Session::testAudio(int audioConfiguration)

app/streaming/audio/renderers/portaudiorenderer.cpp

@@ -164,7 +164,7 @@ int PortAudioRenderer::detectAudioConfiguration()
     }
 }
 
-int PortAudioRenderer::paStreamCallback(const void*, void* output, unsigned long frameCount, const PaStreamCallbackTimeInfo*, PaStreamCallbackFlags statusFlags, void* userData)
+int PortAudioRenderer::paStreamCallback(const void*, void* output, unsigned long frameCount, const PaStreamCallbackTimeInfo*, PaStreamCallbackFlags, void* userData)
 {
     auto me = reinterpret_cast<PortAudioRenderer*>(userData);
 

app/streaming/audio/renderers/sdl.h

@@ -3,6 +3,11 @@
 #include "renderer.h"
 #include <SDL.h>
 
+#ifndef HAVE_SLVIDEO
+#error SDL audio backend is only available for Steam Link
+#error Please install PortAudio to build for Linux
+#endif
+
 class SdlAudioRenderer : public IAudioRenderer
 {
 public: