MixHelpers.h

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/*
 * MixHelpers.h - helper functions for mixing buffers
 *
 * Copyright (c) 2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */
 
#ifndef LMMS_MIX_HELPERS_H
#define LMMS_MIX_HELPERS_H
 
#include "AudioBufferView.h"
 
namespace lmms
{
 
class ValueBuffer;
class SampleFrame;
 
namespace MixHelpers
{
 
bool isSilent(const SampleFrame* src, int frames);
 
bool isSilent(std::span<const sample_t> buffer);

void add( SampleFrame* dst, const SampleFrame* src, int frames );

void add(PlanarBufferView<sample_t> dst, PlanarBufferView<const sample_t> src);

void multiply(SampleFrame* dst, float coeff, int frames);

void addMultiplied( SampleFrame* dst, const SampleFrame* src, float coeffSrc, int frames );

void addSwappedMultiplied( SampleFrame* dst, const SampleFrame* src, float coeffSrc, int frames );

void addMultipliedByBuffer( SampleFrame* dst, const SampleFrame* src, float coeffSrc, ValueBuffer * coeffSrcBuf, int frames );

void addMultipliedByBuffers( SampleFrame* dst, const SampleFrame* src, ValueBuffer * coeffSrcBuf1, ValueBuffer * coeffSrcBuf2, int frames );

void addMultipliedStereo( SampleFrame* dst, const SampleFrame* src, float coeffSrcLeft, float coeffSrcRight, int frames );

void multiplyAndAddMultiplied( SampleFrame* dst, const SampleFrame* src, float coeffDst, float coeffSrc, int frames );

void multiplyAndAddMultipliedJoined( SampleFrame* dst, const sample_t* srcLeft, const sample_t* srcRight, float coeffDst, float coeffSrc, int frames );
 
} // namespace MixHelpers
 
 
} // namespace lmms
 
#endif // LMMS_MIX_HELPERS_H