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7984bb9db6
# Conflicts: # .travis.yml # .travis/linux..script.sh # .travis/linux.win.download.sh # .travis/linux.win32.script.sh # .travis/linux.win64.script.sh # .travis/osx..script.sh # include/VstSyncController.h # plugins/audio_file_processor/audio_file_processor.cpp # plugins/zynaddsubfx/zynaddsubfx # plugins/zynaddsubfx/zynaddsubfx/src/Misc/Bank.cpp # plugins/zynaddsubfx/zynaddsubfx/src/Misc/Bank.h # src/gui/SetupDialog.cpp # src/gui/editors/SongEditor.cpp
329 lines
7.5 KiB
C++
329 lines
7.5 KiB
C++
/*
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* MixHelpers.cpp - helper functions for mixing buffers
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*
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* Copyright (c) 2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program 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 GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#include "MixHelpers.h"
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#include <cstdio>
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#include "lmms_math.h"
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#include "ValueBuffer.h"
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#include <cstdio>
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static bool s_NaNHandler;
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namespace MixHelpers
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{
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/*! \brief Function for applying MIXOP on all sample frames */
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template<typename MIXOP>
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static inline void run( sampleFrame* dst, const sampleFrame* src, int frames, const MIXOP& OP )
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{
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for( int i = 0; i < frames; ++i )
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{
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OP( dst[i], src[i] );
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}
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}
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/*! \brief Function for applying MIXOP on all sample frames - split source */
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template<typename MIXOP>
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static inline void run( sampleFrame* dst, const sample_t* srcLeft, const sample_t* srcRight, int frames, const MIXOP& OP )
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{
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for( int i = 0; i < frames; ++i )
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{
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const sampleFrame src = { srcLeft[i], srcRight[i] };
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OP( dst[i], src );
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}
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}
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bool isSilent( const sampleFrame* src, int frames )
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{
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const float silenceThreshold = 0.0000001f;
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for( int i = 0; i < frames; ++i )
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{
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if( fabsf( src[i][0] ) >= silenceThreshold || fabsf( src[i][1] ) >= silenceThreshold )
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{
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return false;
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}
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}
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return true;
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}
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bool useNaNHandler()
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{
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return s_NaNHandler;
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}
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void setNaNHandler( bool use )
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{
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s_NaNHandler = use;
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}
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/*! \brief Function for sanitizing a buffer of infs/nans - returns true if those are found */
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bool sanitize( sampleFrame * src, int frames )
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{
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if( !useNaNHandler() )
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{
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return false;
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}
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bool found = false;
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for( int f = 0; f < frames; ++f )
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{
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for( int c = 0; c < 2; ++c )
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{
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if( isinf( src[f][c] ) || isnan( src[f][c] ) )
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{
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#ifdef LMMS_DEBUG
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printf("Bad data, clearing buffer. frame: ");
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printf("%d: value %f\n", f, src[f][c]);
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#endif
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for( int f = 0; f < frames; ++f )
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{
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for( int c = 0; c < 2; ++c )
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{
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src[f][c] = 0.0f;
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}
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}
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found = true;
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return found;
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}
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else
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{
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src[f][c] = qBound( -1000.0f, src[f][c], 1000.0f );
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}
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}
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}
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return found;
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}
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struct AddOp
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{
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void operator()( sampleFrame& dst, const sampleFrame& src ) const
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{
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dst[0] += src[0];
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dst[1] += src[1];
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}
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} ;
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void add( sampleFrame* dst, const sampleFrame* src, int frames )
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{
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run<>( dst, src, frames, AddOp() );
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}
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struct AddMultipliedOp
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{
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AddMultipliedOp( float coeff ) : m_coeff( coeff ) { }
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void operator()( sampleFrame& dst, const sampleFrame& src ) const
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{
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dst[0] += src[0] * m_coeff;
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dst[1] += src[1] * m_coeff;
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}
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const float m_coeff;
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} ;
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void addMultiplied( sampleFrame* dst, const sampleFrame* src, float coeffSrc, int frames )
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{
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run<>( dst, src, frames, AddMultipliedOp(coeffSrc) );
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}
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struct AddSwappedMultipliedOp
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{
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AddSwappedMultipliedOp( float coeff ) : m_coeff( coeff ) { }
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void operator()( sampleFrame& dst, const sampleFrame& src ) const
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{
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dst[0] += src[1] * m_coeff;
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dst[1] += src[0] * m_coeff;
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}
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const float m_coeff;
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};
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void addSwappedMultiplied( sampleFrame* dst, const sampleFrame* src, float coeffSrc, int frames )
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{
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run<>( dst, src, frames, AddSwappedMultipliedOp(coeffSrc) );
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}
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void addMultipliedByBuffer( sampleFrame* dst, const sampleFrame* src, float coeffSrc, ValueBuffer * coeffSrcBuf, int frames )
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{
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for( int f = 0; f < frames; ++f )
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{
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dst[f][0] += src[f][0] * coeffSrc * coeffSrcBuf->values()[f];
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dst[f][1] += src[f][1] * coeffSrc * coeffSrcBuf->values()[f];
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}
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}
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void addMultipliedByBuffers( sampleFrame* dst, const sampleFrame* src, ValueBuffer * coeffSrcBuf1, ValueBuffer * coeffSrcBuf2, int frames )
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{
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for( int f = 0; f < frames; ++f )
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{
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dst[f][0] += src[f][0] * coeffSrcBuf1->values()[f] * coeffSrcBuf2->values()[f];
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dst[f][1] += src[f][1] * coeffSrcBuf1->values()[f] * coeffSrcBuf2->values()[f];
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}
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}
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void addSanitizedMultipliedByBuffer( sampleFrame* dst, const sampleFrame* src, float coeffSrc, ValueBuffer * coeffSrcBuf, int frames )
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{
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if ( !useNaNHandler() )
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{
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addMultipliedByBuffer( dst, src, coeffSrc, coeffSrcBuf,
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frames );
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return;
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}
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for( int f = 0; f < frames; ++f )
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{
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dst[f][0] += ( isinf( src[f][0] ) || isnan( src[f][0] ) ) ? 0.0f : src[f][0] * coeffSrc * coeffSrcBuf->values()[f];
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dst[f][1] += ( isinf( src[f][1] ) || isnan( src[f][1] ) ) ? 0.0f : src[f][1] * coeffSrc * coeffSrcBuf->values()[f];
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}
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}
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void addSanitizedMultipliedByBuffers( sampleFrame* dst, const sampleFrame* src, ValueBuffer * coeffSrcBuf1, ValueBuffer * coeffSrcBuf2, int frames )
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{
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if ( !useNaNHandler() )
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{
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addMultipliedByBuffers( dst, src, coeffSrcBuf1, coeffSrcBuf2,
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frames );
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return;
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}
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for( int f = 0; f < frames; ++f )
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{
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dst[f][0] += ( isinf( src[f][0] ) || isnan( src[f][0] ) )
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? 0.0f
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: src[f][0] * coeffSrcBuf1->values()[f] * coeffSrcBuf2->values()[f];
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dst[f][1] += ( isinf( src[f][1] ) || isnan( src[f][1] ) )
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? 0.0f
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: src[f][1] * coeffSrcBuf1->values()[f] * coeffSrcBuf2->values()[f];
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}
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}
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struct AddSanitizedMultipliedOp
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{
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AddSanitizedMultipliedOp( float coeff ) : m_coeff( coeff ) { }
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void operator()( sampleFrame& dst, const sampleFrame& src ) const
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{
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dst[0] += ( isinf( src[0] ) || isnan( src[0] ) ) ? 0.0f : src[0] * m_coeff;
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dst[1] += ( isinf( src[1] ) || isnan( src[1] ) ) ? 0.0f : src[1] * m_coeff;
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}
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const float m_coeff;
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};
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void addSanitizedMultiplied( sampleFrame* dst, const sampleFrame* src, float coeffSrc, int frames )
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{
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if ( !useNaNHandler() )
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{
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addMultiplied( dst, src, coeffSrc, frames );
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return;
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}
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run<>( dst, src, frames, AddSanitizedMultipliedOp(coeffSrc) );
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}
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struct AddMultipliedStereoOp
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{
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AddMultipliedStereoOp( float coeffLeft, float coeffRight )
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{
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m_coeffs[0] = coeffLeft;
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m_coeffs[1] = coeffRight;
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}
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void operator()( sampleFrame& dst, const sampleFrame& src ) const
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{
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dst[0] += src[0] * m_coeffs[0];
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dst[1] += src[1] * m_coeffs[1];
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}
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float m_coeffs[2];
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} ;
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void addMultipliedStereo( sampleFrame* dst, const sampleFrame* src, float coeffSrcLeft, float coeffSrcRight, int frames )
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{
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run<>( dst, src, frames, AddMultipliedStereoOp(coeffSrcLeft, coeffSrcRight) );
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}
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struct MultiplyAndAddMultipliedOp
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{
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MultiplyAndAddMultipliedOp( float coeffDst, float coeffSrc )
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{
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m_coeffs[0] = coeffDst;
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m_coeffs[1] = coeffSrc;
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}
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void operator()( sampleFrame& dst, const sampleFrame& src ) const
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{
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dst[0] = dst[0]*m_coeffs[0] + src[0]*m_coeffs[1];
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dst[1] = dst[1]*m_coeffs[0] + src[1]*m_coeffs[1];
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}
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float m_coeffs[2];
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} ;
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void multiplyAndAddMultiplied( sampleFrame* dst, const sampleFrame* src, float coeffDst, float coeffSrc, int frames )
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{
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run<>( dst, src, frames, MultiplyAndAddMultipliedOp(coeffDst, coeffSrc) );
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}
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void multiplyAndAddMultipliedJoined( sampleFrame* dst,
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const sample_t* srcLeft,
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const sample_t* srcRight,
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float coeffDst, float coeffSrc, int frames )
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{
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run<>( dst, srcLeft, srcRight, frames, MultiplyAndAddMultipliedOp(coeffDst, coeffSrc) );
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}
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}
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