Aegisub/aegisub/audio_spectrum.h

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// Copyright (c) 2005, 2006, Rodrigo Braz Monteiro
// Copyright (c) 2006, 2007, Niels Martin Hansen
// 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 the Aegisub Group 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.
//
// -----------------------------------------------------------------------------
//
// AEGISUB
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:zeratul@cellosoft.com
//
#ifndef AUDIO_SPECTRUM_H
#define AUDIO_SPECTRUM_H
#include <wx/wxprec.h>
#include <stdint.h>
#include "audio_provider.h"
// Specified and implemented in cpp file, interface is private to spectrum code
class AudioSpectrumCacheManager;
class AudioSpectrum {
private:
// Data provider
AudioSpectrumCacheManager *cache;
// Colour pallettes
unsigned char colours_normal[256*3];
unsigned char colours_selected[256*3];
AudioProvider *provider;
unsigned long line_length; // number of frequency components per line (half of number of samples)
unsigned long num_lines; // number of lines needed for the audio
unsigned int fft_overlaps; // number of overlaps used in FFT
float power_scale; // amplification of displayed power
int minband; // smallest frequency band displayed
int maxband; // largest frequency band displayed
public:
AudioSpectrum(AudioProvider *_provider);
~AudioSpectrum();
void RenderRange(int64_t range_start, int64_t range_end, bool selected, unsigned char *img, int imgleft, int imgwidth, int imgpitch, int imgheight);
void SetScaling(float _power_scale);
};
#endif