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/*
* Copyright (C) 2022 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2022 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-dsp-lib
* Created on: 6 нояб. 2022 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 INCLUDE_PRIVATE_DSP_ARCH_GENERIC_PMATH_NORMALIZE_H_
#define INCLUDE_PRIVATE_DSP_ARCH_GENERIC_PMATH_NORMALIZE_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 abs_normalized(float *dst, const float *src, size_t count)
{
// Calculate absolute values
dsp::abs2(dst, src, count);
// Find the maximum value
float max = dsp::max(dst, count);
// Divide if it is possible
if (max != 0.0f)
dsp::mul_k2(dst, 1.0f / max, count);
}
void normalize1(float *dst, size_t count)
{
// Find minimum and maximum
float max = dsp::abs_max(dst, count);
// Normalize OR do nothing
if (max > 0.0f)
dsp::mul_k2(dst, 1.0f / max, count);
}
void normalize2(float *dst, const float *src, size_t count)
{
// Find the absolute maximum
float max = dsp::abs_max(src, count);
// Normalize OR copy
if (max > 0.0f)
dsp::mul_k3(dst, src, 1.0f / max, count);
else
dsp::copy(dst, src, count);
}
} /* namespace generic */
} /* namespace lsp */
#endif /* INCLUDE_PRIVATE_DSP_ARCH_GENERIC_PMATH_NORMALIZE_H_ */
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