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61 lines
1.8 KiB
61 lines
1.8 KiB
/* |
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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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#include "config.h" |
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#include "libavutil/attributes.h" |
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#include "vorbisdsp.h" |
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static void vorbis_inverse_coupling_c(float *mag, float *ang, ptrdiff_t blocksize) |
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{ |
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for (ptrdiff_t i = 0; i < blocksize; i++) { |
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float angi = ang[i], magi = mag[i]; |
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if (magi > 0.f) { |
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if (angi > 0.f) { |
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ang[i] = magi - angi; |
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} else { |
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ang[i] = magi; |
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mag[i] = magi + angi; |
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} |
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} else { |
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if (angi > 0.f) { |
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ang[i] = magi + angi; |
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} else { |
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ang[i] = magi; |
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mag[i] = magi - angi; |
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} |
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} |
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} |
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} |
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av_cold void ff_vorbisdsp_init(VorbisDSPContext *dsp) |
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{ |
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dsp->vorbis_inverse_coupling = vorbis_inverse_coupling_c; |
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#if ARCH_AARCH64 |
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ff_vorbisdsp_init_aarch64(dsp); |
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#elif ARCH_ARM |
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ff_vorbisdsp_init_arm(dsp); |
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#elif ARCH_PPC |
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ff_vorbisdsp_init_ppc(dsp); |
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#elif ARCH_RISCV |
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ff_vorbisdsp_init_riscv(dsp); |
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#elif ARCH_X86 |
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ff_vorbisdsp_init_x86(dsp); |
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#endif |
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}
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