MT32: Update Munt to 2.0.3

This update uses upstream commit
777c51cdb4dbb4e02a53c23edea9086f0b600e26.

The new SampleRateConverter is added, but not built as we don't use it.
Also, building it without source changes will need additional include
directories.

This update of Munt reduces the stack size, and thus fixes bug #9630.

1 files changed, 42 insertions, 0 deletions

diff --git a/audio/softsynth/mt32/srchelper/srctools/include/LinearResampler.h b/audio/softsynth/mt32/srchelper/srctools/include/LinearResampler.h
new file mode 100644
index 0000000000..1f4dd2fcbd
--- /dev/null
+++ b/audio/softsynth/mt32/srchelper/srctools/include/LinearResampler.h
@@ -0,0 +1,42 @@
+/* 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 LINEAR_RESAMPLER_H
+#define LINEAR_RESAMPLER_H
+
+#include "ResamplerStage.h"
+
+namespace SRCTools {
+
+static const unsigned int LINEAR_RESAMPER_CHANNEL_COUNT = 2;
+
+class LinearResampler : public ResamplerStage {
+public:
+	LinearResampler(double sourceSampleRate, double targetSampleRate);
+	~LinearResampler() {}
+
+	unsigned int estimateInLength(const unsigned int outLength) const;
+	void process(const FloatSample *&inSamples, unsigned int &inLength, FloatSample *&outSamples, unsigned int &outLength);
+
+private:
+	const double inputToOutputRatio;
+	double position;
+	FloatSample lastInputSamples[LINEAR_RESAMPER_CHANNEL_COUNT];
+};
+
+} // namespace SRCTools
+
+#endif // LINEAR_RESAMPLER_H