FFmpeg
libavcodec
vorbisdsp.c
Go to the documentation of this file.
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/*
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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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}
ff_vorbisdsp_init_arm
av_cold void ff_vorbisdsp_init_arm(VorbisDSPContext *c)
Definition:
vorbisdsp_init_arm.c:30
ff_vorbisdsp_init_riscv
av_cold void ff_vorbisdsp_init_riscv(VorbisDSPContext *c)
Definition:
vorbisdsp_init.c:29
vorbis_inverse_coupling_c
static void vorbis_inverse_coupling_c(float *mag, float *ang, ptrdiff_t blocksize)
Definition:
vorbisdsp.c:23
VorbisDSPContext
Definition:
vorbisdsp.h:24
av_cold
#define av_cold
Definition:
attributes.h:90
VorbisDSPContext::vorbis_inverse_coupling
void(* vorbis_inverse_coupling)(float *mag, float *ang, ptrdiff_t blocksize)
Definition:
vorbisdsp.h:26
f
f
Definition:
af_crystalizer.c:122
vorbisdsp.h
ff_vorbisdsp_init_aarch64
av_cold void ff_vorbisdsp_init_aarch64(VorbisDSPContext *c)
Definition:
vorbisdsp_init.c:27
attributes.h
i
#define i(width, name, range_min, range_max)
Definition:
cbs_h2645.c:256
ff_vorbisdsp_init
av_cold void ff_vorbisdsp_init(VorbisDSPContext *dsp)
Definition:
vorbisdsp.c:46
ff_vorbisdsp_init_ppc
av_cold void ff_vorbisdsp_init_ppc(VorbisDSPContext *c)
Definition:
vorbisdsp_altivec.c:55
ff_vorbisdsp_init_x86
void ff_vorbisdsp_init_x86(VorbisDSPContext *dsp)
Definition:
vorbisdsp_init.c:30
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