1 files changed, 85 insertions, 0 deletions
diff --git a/src/pcm/GlueResampler.cxx b/src/pcm/GlueResampler.cxx
new file mode 100644
index 000000000..0f5fe0271
--- /dev/null
+++ b/src/pcm/GlueResampler.cxx
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "GlueResampler.hxx"
+#include "ConfiguredResampler.hxx"
+#include "Resampler.hxx"
+
+#include <assert.h>
+
+GluePcmResampler::GluePcmResampler()
+	:resampler(pcm_resampler_create()) {}
+
+GluePcmResampler::~GluePcmResampler()
+{
+	delete resampler;
+}
+
+bool
+GluePcmResampler::Open(AudioFormat src_format, unsigned new_sample_rate,
+		       Error &error)
+{
+	assert(src_format.IsValid());
+	assert(audio_valid_sample_rate(new_sample_rate));
+
+	AudioFormat requested_format = src_format;
+	AudioFormat dest_format = resampler->Open(requested_format,
+						  new_sample_rate,
+						  error);
+	if (!dest_format.IsValid())
+		return false;
+
+	assert(requested_format.channels == src_format.channels);
+	assert(dest_format.channels == src_format.channels);
+	assert(dest_format.sample_rate == new_sample_rate);
+
+	if (requested_format.format != src_format.format &&
+	    !format_converter.Open(src_format.format, requested_format.format,
+				   error))
+		return false;
+
+	src_sample_format = src_format.format;
+	requested_sample_format = requested_format.format;
+	output_sample_format = dest_format.format;
+	return true;
+}
+
+void
+GluePcmResampler::Close()
+{
+	if (requested_sample_format != src_sample_format)
+		format_converter.Close();
+
+	resampler->Close();
+}
+
+ConstBuffer<void>
+GluePcmResampler::Resample(ConstBuffer<void> src, Error &error)
+{
+	assert(!src.IsNull());
+
+	if (requested_sample_format != src_sample_format) {
+		src = format_converter.Convert(src, error);
+		if (src.IsNull())
+			return nullptr;
+	}
+
+	return resampler->Resample(src, error);
+}