Add support for Audio/Video Disable flags

Add support for Hard Disable Audio
Fix frame discarding causing infinite loops
Fix MSVC building

1 files changed, 20 insertions, 0 deletions

diff --git a/libretro.c b/libretro.c
index 47729b0..43dad13 100644
--- a/libretro.c
+++ b/libretro.c
@@ -428,6 +428,8 @@ static int32_t samples_to_play = 0;
 void retro_run(void)
 {
    bool updated = false;
+   int result;
+   bool okay;
 #ifndef USE_BLARGG_APU
    static int16_t audio_buf[2048];
 #endif
@@ -440,6 +442,24 @@ void retro_run(void)
    IPPU.RenderThisFrame = false;
 #endif
 
+   result = -1;
+   okay = environ_cb(RETRO_ENVIRONMENT_GET_AUDIO_VIDEO_ENABLE, &result);
+   if (okay)
+   {
+      bool audioEnabled = 0 != (result & 2);
+      bool videoEnabled = 0 != (result & 1);
+      bool hardDisableAudio = 0 != (result & 8);
+      IPPU.RenderThisFrame = videoEnabled;
+      S9xSetSoundMute(!audioEnabled || hardDisableAudio);
+      Settings.HardDisableAudio = hardDisableAudio;
+   }
+   else
+   {
+      IPPU.RenderThisFrame = true;;
+      S9xSetSoundMute(false);
+      Settings.HardDisableAudio = false;
+   }
+
    poll_cb();
 
    RETRO_PERFORMANCE_INIT(S9xMainLoop_func);