Limit speed when no audio device is open

drhelius · Nov 9, 2024 · 46843b4 · 46843b4
1 parent f4bd771
commit 46843b4
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Showing 5 changed files with 18 additions and 1 deletion.
diff --git a/platforms/shared/audio/sound_queue.cpp b/platforms/shared/audio/sound_queue.cpp
@@ -164,6 +164,16 @@ int SoundQueue::GetSampleCount()
     return m_buffer_size * m_buffer_count - buffer_free;
 }
 
+int16_t* SoundQueue::GetCurrentlyPlaying()
+{
+    return m_currently_playing;
+}
+
+bool SoundQueue::IsOpen()
+{
+    return m_sound_open;
+}
+
 void SoundQueue::Write(int16_t* samples, int count, bool sync)
 {
     if (!m_sound_open)

diff --git a/platforms/shared/audio/sound_queue.h b/platforms/shared/audio/sound_queue.h
@@ -34,6 +34,7 @@ class SoundQueue
     void Write(int16_t* samples, int count, bool sync);
     int GetSampleCount();
     int16_t* GetCurrentlyPlaying();
+    bool IsOpen();
 
 private:
     int16_t* volatile m_buffers;

diff --git a/platforms/shared/desktop/application.cpp b/platforms/shared/desktop/application.cpp
@@ -606,7 +606,7 @@ static void render(void)
 
 static void frame_throttle(void)
 {
-    if (emu_is_empty() || emu_is_paused() || emu_is_debug_idle() || config_emulator.ffwd)
+    if (emu_is_empty() || emu_is_paused() || emu_is_debug_idle() || !emu_is_audio_open() || config_emulator.ffwd)
     {
         Uint64 count_per_sec = SDL_GetPerformanceFrequency();
         float elapsed = (float)(frame_time_end - frame_time_start) / (float)count_per_sec;

diff --git a/platforms/shared/desktop/emu.cpp b/platforms/shared/desktop/emu.cpp
@@ -190,6 +190,11 @@ bool emu_is_audio_enabled(void)
     return audio_enabled;
 }
 
+bool emu_is_audio_open(void)
+{
+    return sound_queue->IsOpen();
+}
+
 void emu_save_ram(const char* file_path)
 {
     // TODO

diff --git a/platforms/shared/desktop/emu.h b/platforms/shared/desktop/emu.h
@@ -70,6 +70,7 @@ EXTERN void emu_reset(void);
 EXTERN void emu_audio_mute(bool mute);
 EXTERN void emu_audio_reset(void);
 EXTERN bool emu_is_audio_enabled(void);
+EXTERN bool emu_is_audio_open(void);
 EXTERN void emu_save_ram(const char* file_path);
 EXTERN void emu_load_ram(const char* file_path);
 EXTERN void emu_save_state_slot(int index);