1 files changed, 38 insertions, 0 deletions
diff --git a/audio/softsynth/mt32/srchelper/srctools/include/ResamplerStage.h b/audio/softsynth/mt32/srchelper/srctools/include/ResamplerStage.h
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index 0000000000..c0f0a0a50a
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+++ b/audio/softsynth/mt32/srchelper/srctools/include/ResamplerStage.h
@@ -0,0 +1,38 @@
+/* Copyright (C) 2015-2017 Sergey V. Mikayev
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation, either version 2.1 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 Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef RESAMPLER_STAGE_H
+#define RESAMPLER_STAGE_H
+
+#include "FloatSampleProvider.h"
+
+namespace SRCTools {
+
+/** Interface defines an abstract source of samples. It can either define a single channel stream or a stream with interleaved channels. */
+class ResamplerStage {
+public:
+	virtual ~ResamplerStage() {};
+
+	/** Returns a lower estimation of required number of input samples to produce the specified number of output samples. */
+	virtual unsigned int estimateInLength(const unsigned int outLength) const = 0;
+
+	/** Generates output samples. The arguments are adjusted in accordance with the number of samples processed. */
+	virtual void process(const FloatSample *&inSamples, unsigned int &inLength, FloatSample *&outSamples, unsigned int &outLength) = 0;
+};
+
+} // namespace SRCTools
+
+#endif // RESAMPLER_STAGE_H