pcm/Convert: add method Reset()

src/pcm/PcmConvert.cxx

@@ -117,6 +117,17 @@ PcmConvert::Close()
 #endif
 }
 
+void
+PcmConvert::Reset()
+{
+	if (enable_resampler)
+		resampler.Reset();
+
+#ifdef ENABLE_DSD
+	dsd.Reset();
+#endif
+}
+
 ConstBuffer<void>
 PcmConvert::Convert(ConstBuffer<void> buffer)
 {

src/pcm/PcmConvert.hxx

@@ -68,6 +68,11 @@ public:
 	void Close();
 
 	/**
+	 * Reset the filter's state, e.g. drop/flush buffers.
+	 */
+	void Reset();
+
+	/**
 	 * Converts PCM data between two audio formats.
 	 *
 	 * Throws std::runtime_error on error.