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https://github.com/FFmpeg/FFmpeg.git
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453aba71e6
This uses the following vectorisation:
for (i = 0; i < blocksize; i++) {
ang[i] = mag[i] - copysignf(fmaxf(ang[i], 0.f), mag[i]);
mag[i] = mag[i] - copysignf(fminf(ang[i], 0.f), mag[i]);
}
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_VORBISDSP_H
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#define AVCODEC_VORBISDSP_H
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#include <stddef.h>
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typedef struct VorbisDSPContext {
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/* assume len is a multiple of 4, and arrays are 16-byte aligned */
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void (*vorbis_inverse_coupling)(float *mag, float *ang,
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ptrdiff_t blocksize);
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} VorbisDSPContext;
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void ff_vorbisdsp_init(VorbisDSPContext *dsp);
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/* for internal use only */
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void ff_vorbisdsp_init_aarch64(VorbisDSPContext *dsp);
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void ff_vorbisdsp_init_x86(VorbisDSPContext *dsp);
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void ff_vorbisdsp_init_arm(VorbisDSPContext *dsp);
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void ff_vorbisdsp_init_ppc(VorbisDSPContext *dsp);
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void ff_vorbisdsp_init_riscv(VorbisDSPContext *dsp);
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#endif /* AVCODEC_VORBISDSP_H */
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