90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
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// Copyright (c) 2005, 2006, Rodrigo Braz Monteiro
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// Copyright (c) 2006, 2007, Niels Martin Hansen
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:zeratul@cellosoft.com
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//
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#ifndef AUDIO_SPECTRUM_H
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#define AUDIO_SPECTRUM_H
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#include <wx/wxprec.h>
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#include <vector>
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#include "audio_provider.h"
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// Spectrum cache basically caches the raw result of FFT
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class AudioSpectrumCache {
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public:
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typedef std::vector<float> CacheLine;
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virtual CacheLine& GetLine(unsigned long i) = 0;
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static void SetLineLength(unsigned long new_length);
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virtual ~AudioSpectrumCache() {};
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protected:
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static CacheLine null_line;
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static unsigned long line_length;
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};
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class AudioSpectrum {
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private:
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// Data provider
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AudioSpectrumCache *cache;
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// Colour pallettes
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unsigned char colours_normal[256*3];
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unsigned char colours_selected[256*3];
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AudioProvider *provider;
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unsigned long line_length; // number of frequency components per line (half of number of samples)
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unsigned long num_lines; // number of lines needed for the audio
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float power_scale; // amplification of displayed power
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int minband; // smallest frequency band displayed
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int maxband; // largest frequency band displayed
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public:
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AudioSpectrum(AudioProvider *_provider, unsigned long _line_length);
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~AudioSpectrum();
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void RenderRange(__int64 range_start, __int64 range_end, bool selected, unsigned char *img, int imgleft, int imgwidth, int imgpitch, int imgheight);
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void SetScaling(float _power_scale);
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};
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#endif
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