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/*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "libavutil/attributes.h"
#include "vorbisdsp.h"
static void vorbis_inverse_coupling_c(float *mag, float *ang, ptrdiff_t blocksize)
{
for (ptrdiff_t i = 0; i < blocksize; i++) {
float angi = ang[i], magi = mag[i];
if (magi > 0.f) {
if (angi > 0.f) {
ang[i] = magi - angi;
} else {
ang[i] = magi;
mag[i] = magi + angi;
}
} else {
if (angi > 0.f) {
ang[i] = magi + angi;
} else {
ang[i] = magi;
mag[i] = magi - angi;
}
}
}
}
av_cold void ff_vorbisdsp_init(VorbisDSPContext *dsp)
{
dsp->vorbis_inverse_coupling = vorbis_inverse_coupling_c;
#if ARCH_AARCH64
ff_vorbisdsp_init_aarch64(dsp);
#elif ARCH_ARM
ff_vorbisdsp_init_arm(dsp);
#elif ARCH_PPC
ff_vorbisdsp_init_ppc(dsp);
#elif ARCH_RISCV
ff_vorbisdsp_init_riscv(dsp);
#elif ARCH_X86
ff_vorbisdsp_init_x86(dsp);
#endif
}
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