From 4e3f857cb84c2c2ba834d5ddd0c5e1d9375cd947 Mon Sep 17 00:00:00 2001
From: Richard <q@1bpm.net>
Date: Tue, 16 Mar 2021 01:20:31 +0000
Subject: initial

---
 include/dtw.h | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 include/dtw.h

(limited to 'include')

diff --git a/include/dtw.h b/include/dtw.h
new file mode 100644
index 0000000..4c8064d
--- /dev/null
+++ b/include/dtw.h
@@ -0,0 +1,79 @@
+/*
+Copyright (c) 2014, Calder Phillips-Grafflin (calder.pg@gmail.com)
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <plugin.h>
+
+#ifndef DTW_H
+#define DTW_H
+
+namespace DTW
+{
+
+class SimpleDTW
+{
+private:
+
+    double (*distance_fn_)(MYFLT* p1, MYFLT* p2, int bands);
+    MYFLT* data_;
+    size_t x_dim_;
+    size_t y_dim_;
+    int mfcc_bands;
+
+    inline size_t GetDataIndex(size_t x, size_t y)
+    {
+        return (x * y_dim_) + y;
+    }
+
+    inline double GetFromDTWMatrix(size_t x, size_t y)
+    {
+        return data_[GetDataIndex(x, y)];
+    }
+
+    inline void SetInDTWMatrix(size_t x, size_t y, MYFLT val)
+    {
+        data_[GetDataIndex(x, y)] = val;
+    }
+
+public:
+
+    SimpleDTW (csnd::Csound* csound, size_t x_size, size_t y_size, int mfcc_bands, MYFLT (*distance_fn)(MYFLT* p1, MYFLT* p2, int bands));
+
+    ~SimpleDTW() {}
+
+    double EvaluateWarpingCost(
+        MYFLT* sequence_1, 
+        int seq1_items,
+        MYFLT* sequence_2,
+        int seq2_items
+    );
+
+};
+
+}
+
+#endif // DTW_H
-- 
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