Revert to spinlocking for audio sync

src/core/audio/miniaudio_device.cpp

@@ -92,6 +92,14 @@ void MiniAudioDevice::init(Samples& samples, bool safe) {
 		auto self = reinterpret_cast<MiniAudioDevice*>(device->pUserData);
 		s16* output = reinterpret_cast<ma_int16*>(out);
 
+		// Wait until there's enough samples to pop
+		while (self->samples->size() < frameCount * channelCount) {
+			// If audio output is disabled from the emulator thread, make sure that this callback will return and not hang
+			if (!self->running) {
+				return;
+			}
+		}
+
 		self->samples->pop(output, frameCount * channelCount);
 	};
 

src/core/audio/teakra_core.cpp

@@ -128,6 +128,11 @@ void TeakraDSP::setAudioEnabled(bool enable) {
 				// Push our samples at the end of an audio frame
 				if (audioFrameIndex >= audioFrame.size()) {
 					audioFrameIndex -= audioFrame.size();
+
+					// Wait until we've actually got room to do so
+					while (sampleBuffer.size() + 2 > sampleBuffer.Capacity()) {
+					}
+
 					sampleBuffer.push(audioFrame.data(), audioFrame.size());
 				}
 			});