Audaspace: Bugfix for PulseAudio ported from upstream.

extern/audaspace/include/util/RingBuffer.h

@@ -74,6 +74,8 @@ public:
 
 	size_t write(data_t* source, size_t size);
 
+	void clear();
+
 	/**
 	 * Resets the ring buffer to a state where nothing has been written or read.
 	 */

extern/audaspace/plugins/pulseaudio/PulseAudioDevice.cpp

@@ -91,6 +91,12 @@ void PulseAudioDevice::PulseAudio_request(pa_stream *stream, size_t total_bytes,
 
 		AUD_pa_stream_begin_write(stream, reinterpret_cast<void**>(&buffer), &num_bytes);
 
+		if(device->m_clear)
+		{
+			device->m_clear = false;
+			device->m_ring_buffer.clear();
+		}
+
 		size_t readsamples = device->m_ring_buffer.getReadSize();
 
 		readsamples = std::min(readsamples, size_t(num_bytes)) / sample_size;
@@ -119,11 +125,18 @@ void PulseAudioDevice::playing(bool playing)
 	AUD_pa_threaded_mainloop_lock(m_mainloop);
 	AUD_pa_stream_cork(m_stream, playing ? 0 : 1, nullptr, nullptr);
 	AUD_pa_threaded_mainloop_unlock(m_mainloop);
+
+	if(!playing)
+	{
+		AUD_pa_stream_flush(m_stream, nullptr, nullptr);
+		m_clear = true;
+	}
 }
 
 PulseAudioDevice::PulseAudioDevice(const std::string &name, DeviceSpecs specs, int buffersize) :
 	m_synchronizer(this),
 	m_playback(false),
+	m_clear(false),
 	m_state(PA_CONTEXT_UNCONNECTED),
 	m_valid(true),
 	m_underflows(0)

extern/audaspace/plugins/pulseaudio/PulseAudioDevice.h

@@ -60,6 +60,11 @@ private:
 	 */
 	volatile bool m_playback;
 
+	/**
+	 * Set when playback is paused in order to later clear the ring buffer when the playback starts again.
+	 */
+	volatile bool m_clear;
+
 	pa_threaded_mainloop* m_mainloop;
 	pa_context* m_context;
 	pa_stream* m_stream;

extern/audaspace/src/util/RingBuffer.cpp

@@ -116,6 +116,11 @@ size_t RingBuffer::write(data_t* source, size_t size)
 	return size;
 }
 
+void RingBuffer::clear()
+{
+	m_read = m_write;
+}
+
 void RingBuffer::reset()
 {
 	m_read = 0;