diff options
author | Joerg Mueller <nexyon@gmail.com> | 2009-12-28 13:15:35 +0300 |
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committer | Joerg Mueller <nexyon@gmail.com> | 2009-12-28 13:15:35 +0300 |
commit | ed4029d07a75a36c2aa3f50770bb749753bcd8ec (patch) | |
tree | 63c1242593db911dc25c4105196100cc62f578dd /intern/audaspace/fftw/AUD_BandPassReader.h | |
parent | 98f1d6957eccd3e7fab4274f29ee6a44de154210 (diff) |
Sound:
* Fixed minor errors in AUD_BufferReader.cpp and AUD_LoopFactory.h
* Added a first version of a bandpass filter using fftw3
Diffstat (limited to 'intern/audaspace/fftw/AUD_BandPassReader.h')
-rw-r--r-- | intern/audaspace/fftw/AUD_BandPassReader.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/intern/audaspace/fftw/AUD_BandPassReader.h b/intern/audaspace/fftw/AUD_BandPassReader.h new file mode 100644 index 00000000000..7a8fd3b94d5 --- /dev/null +++ b/intern/audaspace/fftw/AUD_BandPassReader.h @@ -0,0 +1,99 @@ +/* + * $Id$ + * + * ***** BEGIN LGPL LICENSE BLOCK ***** + * + * Copyright 2009 Jörg Hermann Müller + * + * This file is part of AudaSpace. + * + * AudaSpace 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 3 of the License, or + * (at your option) any later version. + * + * AudaSpace 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 AudaSpace. If not, see <http://www.gnu.org/licenses/>. + * + * ***** END LGPL LICENSE BLOCK ***** + */ + +#ifndef AUD_BANDPASSREADER +#define AUD_BANDPASSREADER + +#include <fftw3.h> + +#include "AUD_EffectReader.h" +class AUD_Buffer; + +/** + * This class only passes a specific frequency band of another reader. + */ +class AUD_BandPassReader : public AUD_EffectReader +{ +private: + /** + * The playback buffer. + */ + AUD_Buffer *m_buffer; + + /** + * The input buffer for fourier transformations. + */ + AUD_Buffer *m_in; + + /** + * The output buffer for fourier transformations. + */ + AUD_Buffer *m_out; + + /** + * The lowest passed frequency. + */ + float m_low; + + /** + * The highest passed frequency. + */ + float m_high; + + /** + * The fftw plan for forward transformation. + */ + fftw_plan m_forward; + + /** + * The fftw plan for backward transformation. + */ + fftw_plan m_backward; + + /** + * The length of the plans. + */ + int m_length; + +public: + /** + * Creates a new band pass reader. + * \param reader The reader to read from. + * \param low The lowest passed frequency. + * \param high The highest passed frequency. + * \exception AUD_Exception Thrown if the reader specified is NULL. + */ + AUD_BandPassReader(AUD_IReader* reader, float low, float high); + + /** + * Destroys the reader. + */ + virtual ~AUD_BandPassReader(); + + virtual AUD_ReaderType getType(); + virtual void read(int & length, sample_t* & buffer); +}; + +#endif //AUD_BANDPASSREADER |