pcm/Resampler: add virtual method Flush()

Wired to Filter::Flush().

Closes #153

1 files changed, 19 insertions, 0 deletions

diff --git a/src/pcm/PcmConvert.cxx b/src/pcm/PcmConvert.cxx
index a63e92a7c..548c5a9d1 100644
--- a/src/pcm/PcmConvert.cxx
+++ b/src/pcm/PcmConvert.cxx
@@ -152,3 +152,22 @@ PcmConvert::Convert(ConstBuffer<void> buffer)
 
 	return buffer;
 }
+
+ConstBuffer<void>
+PcmConvert::Flush()
+{
+	if (enable_resampler) {
+		auto buffer = resampler.Flush();
+		if (!buffer.IsNull()) {
+			if (enable_format)
+				buffer = format_converter.Convert(buffer);
+
+			if (enable_channels)
+				buffer = channels_converter.Convert(buffer);
+
+			return buffer;
+		}
+	}
+
+	return nullptr;
+}