forked from bartvdbraak/blender
Sound:
* Fixed minor errors in AUD_BufferReader.cpp and AUD_LoopFactory.h * Added a first version of a bandpass filter using fftw3
This commit is contained in:
parent
98f1d6957e
commit
ed4029d07a
@ -40,11 +40,6 @@ IF(WITH_OPENAL)
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SET(INC ${INC} OpenAL ${OPENAL_INCLUDE_DIR})
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FILE(GLOB OPENALSRC OpenAL/*.cpp)
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ADD_DEFINITIONS(-DWITH_OPENAL)
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STRING(REGEX MATCH ".*ramework.*" FRAMEWORK ${OPENAL_INCLUDE_DIR})
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IF(FRAMEWORK)
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ADD_DEFINITIONS(-DAPPLE_FRAMEWORK_FIX)
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ENDIF(FRAMEWORK)
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ENDIF(WITH_OPENAL)
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IF(WITH_JACK)
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@ -59,6 +54,12 @@ IF(WITH_SNDFILE)
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ADD_DEFINITIONS(-DWITH_SNDFILE)
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ENDIF(WITH_SNDFILE)
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SET(SRC ${SRC} ${FFMPEGSRC} ${SNDFILESRC} ${SDLSRC} ${OPENALSRC} ${JACKSRC})
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IF(WITH_FFTW3)
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SET(INC ${INC} fftw ${FFTW3_INC})
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FILE(GLOB FFTW3SRC fftw/*.cpp)
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ADD_DEFINITIONS(-DWITH_FFTW3)
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ENDIF(WITH_FFTW3)
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SET(SRC ${SRC} ${FFMPEGSRC} ${SNDFILESRC} ${FFTW3SRC} ${SDLSRC} ${OPENALSRC} ${JACKSRC})
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BLENDERLIB(bf_audaspace "${SRC}" "${INC}")
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@ -38,7 +38,7 @@ private:
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/**
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* The loop count.
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*/
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float m_loop;
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int m_loop;
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public:
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/**
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@ -31,4 +31,9 @@ if env['WITH_BF_SNDFILE']:
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incs += ' sndfile ' + env['BF_SNDFILE_INC']
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defs.append('WITH_SNDFILE')
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if env['WITH_BF_FFTW3']:
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sources += env.Glob('fftw/*.cpp')
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incs += ' fftw ' + env['BF_FFTW3_INC']
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defs.append('WITH_FFTW3')
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env.BlenderLib ('bf_audaspace', sources, Split(incs), defs, libtype=['intern','player'], priority = [25,215] )
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79
intern/audaspace/fftw/AUD_BandPassFactory.cpp
Normal file
79
intern/audaspace/fftw/AUD_BandPassFactory.cpp
Normal file
@ -0,0 +1,79 @@
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/*
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* $Id$
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*
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* ***** BEGIN LGPL LICENSE BLOCK *****
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*
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* Copyright 2009 Jörg Hermann Müller
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*
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* This file is part of AudaSpace.
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*
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* AudaSpace is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* AudaSpace is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with AudaSpace. If not, see <http://www.gnu.org/licenses/>.
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*
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* ***** END LGPL LICENSE BLOCK *****
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*/
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#include "AUD_BandPassFactory.h"
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#include "AUD_BandPassReader.h"
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AUD_BandPassFactory::AUD_BandPassFactory(AUD_IFactory* factory, float low,
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float high) :
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AUD_EffectFactory(factory),
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m_low(low),
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m_high(high) {}
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AUD_BandPassFactory::AUD_BandPassFactory(float low, float high) :
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AUD_EffectFactory(0),
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m_low(low),
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m_high(high) {}
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float AUD_BandPassFactory::getLow()
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{
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return m_low;
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}
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float AUD_BandPassFactory::getHigh()
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{
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return m_high;
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}
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void AUD_BandPassFactory::setLow(float low)
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{
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m_low = low;
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}
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void AUD_BandPassFactory::setHigh(float high)
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{
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m_high = high;
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}
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AUD_IReader* AUD_BandPassFactory::createReader()
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{
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AUD_IReader* reader = getReader();
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if(reader != 0)
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{
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if(reader->getSpecs().format == AUD_FORMAT_FLOAT32)
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{
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reader = new AUD_BandPassReader(reader, m_low, m_high);
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AUD_NEW("reader")
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}
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else
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{
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delete reader; AUD_DELETE("reader")
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return 0;
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}
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}
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return reader;
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}
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88
intern/audaspace/fftw/AUD_BandPassFactory.h
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88
intern/audaspace/fftw/AUD_BandPassFactory.h
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@ -0,0 +1,88 @@
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/*
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* $Id$
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*
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* ***** BEGIN LGPL LICENSE BLOCK *****
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*
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* Copyright 2009 Jörg Hermann Müller
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*
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* This file is part of AudaSpace.
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*
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* AudaSpace is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* AudaSpace is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with AudaSpace. If not, see <http://www.gnu.org/licenses/>.
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*
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* ***** END LGPL LICENSE BLOCK *****
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*/
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#ifndef AUD_BANDPASSFACTORY
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#define AUD_BANDPASSFACTORY
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#include "AUD_EffectFactory.h"
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/**
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* This factory creates a band pass filter for a sound wave.
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*/
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class AUD_BandPassFactory : public AUD_EffectFactory
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{
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private:
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/**
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* The lowest frequency to be passed.
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*/
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float m_low;
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/**
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* The highest frequency to be passed.
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*/
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float m_high;
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public:
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/**
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* Creates a new band pass factory.
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* \param factory The input factory.
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* \param low The lowest passed frequency.
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* \param high The highest passed frequency.
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*/
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AUD_BandPassFactory(AUD_IFactory* factory, float low, float high);
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/**
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* Creates a new band pass factory.
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* \param low The lowest passed frequency.
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* \param high The highest passed frequency.
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*/
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AUD_BandPassFactory(float low, float high);
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/**
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* Returns the lowest passed frequency.
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*/
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float getLow();
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/**
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* Returns the highest passed frequency.
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*/
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float getHigh();
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/**
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* Sets the lowest passed frequency.
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* \param low The lowest passed frequency.
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*/
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void setLow(float low);
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/**
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* Sets the highest passed frequency.
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* \param high The highest passed frequency.
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*/
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void setHigh(float hight);
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virtual AUD_IReader* createReader();
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};
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#endif //AUD_BANDPASSFACTORY
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126
intern/audaspace/fftw/AUD_BandPassReader.cpp
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126
intern/audaspace/fftw/AUD_BandPassReader.cpp
Normal file
@ -0,0 +1,126 @@
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/*
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* $Id$
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*
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* ***** BEGIN LGPL LICENSE BLOCK *****
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*
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* Copyright 2009 Jörg Hermann Müller
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*
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* This file is part of AudaSpace.
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*
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* AudaSpace is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* AudaSpace is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with AudaSpace. If not, see <http://www.gnu.org/licenses/>.
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*
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* ***** END LGPL LICENSE BLOCK *****
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*/
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#include "AUD_BandPassReader.h"
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#include "AUD_Buffer.h"
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#include <cstring>
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#include <stdio.h>
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AUD_BandPassReader::AUD_BandPassReader(AUD_IReader* reader, float low,
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float high) :
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AUD_EffectReader(reader), m_low(low), m_high(high)
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{
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m_buffer = new AUD_Buffer(); AUD_NEW("buffer")
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m_in = new AUD_Buffer(); AUD_NEW("buffer")
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m_out = new AUD_Buffer(); AUD_NEW("buffer")
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m_length = 0;
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}
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AUD_BandPassReader::~AUD_BandPassReader()
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{
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if(m_length != 0)
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{
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fftw_destroy_plan(m_forward);
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fftw_destroy_plan(m_backward);
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}
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delete m_buffer; AUD_DELETE("buffer")
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delete m_in; AUD_DELETE("buffer")
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delete m_out; AUD_DELETE("buffer")
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}
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AUD_ReaderType AUD_BandPassReader::getType()
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{
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return m_reader->getType();
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}
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void AUD_BandPassReader::read(int & length, sample_t* & buffer)
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{
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AUD_Specs specs = m_reader->getSpecs();
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m_reader->read(length, buffer);
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if(length > 0)
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{
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if(length * AUD_SAMPLE_SIZE(specs) > m_buffer->getSize())
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m_buffer->resize(length * AUD_SAMPLE_SIZE(specs));
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if(length != m_length)
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{
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if(m_length != 0)
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{
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fftw_destroy_plan(m_forward);
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fftw_destroy_plan(m_backward);
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}
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m_length = length;
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printf("WINDOW: %d\n", m_length);
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if(m_length * sizeof(double) > m_in->getSize())
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{
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m_in->resize(m_length * sizeof(double));
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m_out->resize((m_length / 2 + 1) * sizeof(fftw_complex));
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}
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m_forward = fftw_plan_dft_r2c_1d(m_length,
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(double*)m_in->getBuffer(),
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(fftw_complex*)m_out->getBuffer(),
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FFTW_ESTIMATE);
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m_backward = fftw_plan_dft_c2r_1d(m_length,
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(fftw_complex*)m_out->getBuffer(),
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(double*)m_in->getBuffer(),
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FFTW_ESTIMATE);
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}
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float* source = (float*) buffer;
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double* target = (double*) m_in->getBuffer();
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float* target2 = (float*) m_buffer->getBuffer();
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fftw_complex* complex = (fftw_complex*) m_out->getBuffer();
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float frequency;
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for(int channel = 0; channel < specs.channels; channel++)
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{
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for(int i = 0; i < m_length; i++)
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target[i] = source[i * specs.channels + channel];
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fftw_execute(m_forward);
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for(int i = 0; i < m_length / 2 + 1; i++)
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{
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frequency = i * specs.rate / (m_length / 2.0 + 1.0);
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if((frequency < m_low) || (frequency > m_high))
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complex[i][0] = complex[i][1] = 0.0;
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}
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fftw_execute(m_backward);
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for(int i = 0; i < m_length; i++)
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target2[i * specs.channels + channel] = target[i] / m_length;
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}
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}
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buffer = m_buffer->getBuffer();
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}
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99
intern/audaspace/fftw/AUD_BandPassReader.h
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99
intern/audaspace/fftw/AUD_BandPassReader.h
Normal file
@ -0,0 +1,99 @@
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/*
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* $Id$
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*
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* ***** BEGIN LGPL LICENSE BLOCK *****
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*
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* Copyright 2009 Jörg Hermann Müller
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*
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* This file is part of AudaSpace.
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*
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* AudaSpace is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* AudaSpace is distributed in the hope that it will be useful,
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||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
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||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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||||
*
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* You should have received a copy of the GNU Lesser General Public License
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* along with AudaSpace. If not, see <http://www.gnu.org/licenses/>.
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*
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* ***** END LGPL LICENSE BLOCK *****
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*/
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#ifndef AUD_BANDPASSREADER
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#define AUD_BANDPASSREADER
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#include <fftw3.h>
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#include "AUD_EffectReader.h"
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class AUD_Buffer;
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/**
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* This class only passes a specific frequency band of another reader.
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*/
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class AUD_BandPassReader : public AUD_EffectReader
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{
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private:
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/**
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* The playback buffer.
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*/
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AUD_Buffer *m_buffer;
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/**
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* The input buffer for fourier transformations.
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*/
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AUD_Buffer *m_in;
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/**
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* The output buffer for fourier transformations.
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*/
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AUD_Buffer *m_out;
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/**
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* The lowest passed frequency.
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*/
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float m_low;
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/**
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* The highest passed frequency.
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*/
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float m_high;
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/**
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* The fftw plan for forward transformation.
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*/
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fftw_plan m_forward;
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/**
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* The fftw plan for backward transformation.
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*/
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fftw_plan m_backward;
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/**
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* The length of the plans.
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*/
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int m_length;
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public:
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/**
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* Creates a new band pass reader.
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* \param reader The reader to read from.
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* \param low The lowest passed frequency.
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* \param high The highest passed frequency.
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* \exception AUD_Exception Thrown if the reader specified is NULL.
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*/
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AUD_BandPassReader(AUD_IReader* reader, float low, float high);
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/**
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* Destroys the reader.
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*/
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virtual ~AUD_BandPassReader();
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virtual AUD_ReaderType getType();
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virtual void read(int & length, sample_t* & buffer);
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};
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#endif //AUD_BANDPASSREADER
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@ -81,7 +81,7 @@ void AUD_BufferReader::read(int & length, sample_t* & buffer)
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buffer = m_buffer.get()->getBuffer()+m_position*sample_size;
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// in case the end of the buffer is reach
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// in case the end of the buffer is reached
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if(m_buffer.get()->getSize() < (m_position+length)*sample_size)
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length = m_buffer.get()->getSize()/sample_size-m_position;
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Block a user