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/*
* Copyright (C) 2020 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2020 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-dsp-lib
* Created on: 31 мар. 2020 г.
*
* lsp-dsp-lib 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
* any later version.
*
* lsp-dsp-lib 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 lsp-dsp-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_DSP_ARCH_GENERIC_MSMATRIX_H_
#define PRIVATE_DSP_ARCH_GENERIC_MSMATRIX_H_
#ifndef PRIVATE_DSP_ARCH_GENERIC_IMPL
#error "This header should not be included directly"
#endif /* PRIVATE_DSP_ARCH_GENERIC_IMPL */
namespace lsp
{
namespace generic
{
void lr_to_ms(float *m, float *s, const float *l, const float *r, size_t count)
{
while (count--)
{
float lv = *(l++);
float rv = *(r++);
*(m++) = (lv + rv) * 0.5f;
*(s++) = (lv - rv) * 0.5f;
}
}
void lr_to_mid(float *m, const float *l, const float *r, size_t count)
{
while (count--)
{
float lv = *(l++);
float rv = *(r++);
*(m++) = (lv + rv) * 0.5f;
}
}
void lr_to_side(float *s, const float *l, const float *r, size_t count)
{
while (count--)
{
float lv = *(l++);
float rv = *(r++);
*(s++) = (lv - rv) * 0.5f;
}
}
void ms_to_lr(float *l, float *r, const float *m, const float *s, size_t count)
{
while (count--)
{
float mv = *(m++);
float sv = *(s++);
*(l++) = mv + sv;
*(r++) = mv - sv;
}
}
void ms_to_left(float *l, const float *m, const float *s, size_t count)
{
while (count--)
*(l++) = *(m++) + *(s++);
}
void ms_to_right(float *r, const float *m, const float *s, size_t count)
{
while (count--)
*(r++) = *(m++) - *(s++);
}
}
}
#endif /* PRIVATE_DSP_ARCH_GENERIC_MSMATRIX_H_ */
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