Libav
libavcodec
ppc
fft_init.c
Go to the documentation of this file.
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/*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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/cpu.h
"
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#include "
libavutil/ppc/cpu.h
"
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#include "
libavcodec/fft.h
"
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void
ff_fft_calc_interleave_altivec
(
FFTContext
*s,
FFTComplex
*z);
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av_cold
void
ff_fft_init_ppc
(
FFTContext
*s)
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{
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#if HAVE_GNU_AS && HAVE_ALTIVEC && HAVE_BIGENDIAN
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if
(!
PPC_ALTIVEC
(
av_get_cpu_flags
()))
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return
;
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s->
fft_calc
=
ff_fft_calc_interleave_altivec
;
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#endif
/* HAVE_GNU_AS && HAVE_ALTIVEC && HAVE_BIGENDIAN */
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}
cpu.h
ff_fft_init_ppc
av_cold void ff_fft_init_ppc(FFTContext *s)
Definition:
fft_init.c:28
config.h
av_cold
#define av_cold
Definition:
attributes.h:66
PPC_ALTIVEC
#define PPC_ALTIVEC(flags)
Definition:
cpu.h:26
ff_fft_calc_interleave_altivec
void ff_fft_calc_interleave_altivec(FFTContext *s, FFTComplex *z)
FFTContext
Definition:
fft.h:73
cpu.h
FFTComplex
Definition:
avfft.h:37
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:47
FFTContext::fft_calc
void(* fft_calc)(struct FFTContext *s, FFTComplex *z)
Do a complex FFT with the parameters defined in ff_fft_init().
Definition:
fft.h:91
fft.h
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