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be5e17c29c
A simple function for testing whether a given sample buffer is silent. Maybe we have to adjust/lower the threshold.
56 lines
2.0 KiB
C++
56 lines
2.0 KiB
C++
/*
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* MixHelpers.h - 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 Linux MultiMedia Studio - http://lmms.sourceforge.net
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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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#ifndef _MIX_HELPERS_H
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#define _MIX_HELPERS_H
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#include "lmms_basics.h"
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namespace MixHelpers
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{
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bool isSilent( const sampleFrame* src, int frames );
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/*! \brief Add samples from src to dst */
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void add( sampleFrame* dst, const sampleFrame* src, int frames );
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/*! \brief Add samples from src multiplied by coeffSrc to dst */
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void addMultiplied( sampleFrame* dst, const sampleFrame* src, float coeffSrc, int frames );
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/*! \brief Add samples from src multiplied by coeffSrcLeft/coeffSrcRight to dst */
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void addMultipliedStereo( sampleFrame* dst, const sampleFrame* src, float coeffSrcLeft, float coeffSrcRight, int frames );
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/*! \brief Multiply dst by coeffDst and add samples from src multiplied by coeffSrc */
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void multiplyAndAddMultiplied( sampleFrame* dst, const sampleFrame* src, float coeffDst, float coeffSrc, int frames );
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/*! \brief Multiply dst by coeffDst and add samples from srcLeft/srcRight multiplied by coeffSrc */
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void multiplyAndAddMultipliedJoined( sampleFrame* dst, const sample_t* srcLeft, const sample_t* srcRight, float coeffDst, float coeffSrc, int frames );
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}
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#endif
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