1 files changed, 60 insertions, 0 deletions
diff --git a/Src/Plugins/Visualization/vis_milk2/fft.h b/Src/Plugins/Visualization/vis_milk2/fft.h
new file mode 100644
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+++ b/Src/Plugins/Visualization/vis_milk2/fft.h
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+/*
+  LICENSE
+  -------
+Copyright 2005-2013 Nullsoft, Inc.
+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. 
+
+  * Neither the name of Nullsoft nor the names of its contributors may be used to 
+    endorse or promote products derived from this software without specific prior written permission. 
+ 
+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 OWNER 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.
+*/
+
+#ifndef __NULLSOFT_DX9_PLUGIN_SHELL_FFT_H__
+#define __NULLSOFT_DX9_PLUGIN_SHELL_FFT_H__ 1
+
+class FFT
+{
+public:
+    FFT();
+    ~FFT();
+    void Init(int samples_in, int samples_out, int bEqualize=1, float envelope_power=1.0f);
+    void time_to_frequency_domain(float *in_wavedata, float *out_spectraldata);
+    int  GetNumFreq() { return NFREQ; };
+    void CleanUp();
+private:
+    int m_ready;
+    int m_samples_in;
+    int NFREQ;
+
+    void InitEnvelopeTable(float power);
+    void InitEqualizeTable();
+    void InitBitRevTable();
+    void InitCosSinTable();
+    
+    int   *bitrevtable;
+    float *envelope;
+    float *equalize;
+    float *temp1;
+    float *temp2;
+    float (*cossintable)[2];
+};
+
+#endif
+\ No newline at end of file