mirror of
https://github.com/FFmpeg/FFmpeg.git
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143 lines
2.7 KiB
C
143 lines
2.7 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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#include "libavutil/mem.h"
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#include "avfft.h"
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#include "fft.h"
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/* FFT */
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FFTContext *av_fft_init(int nbits, int inverse)
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{
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FFTContext *s = av_malloc(sizeof(*s));
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if (s && ff_fft_init(s, nbits, inverse))
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av_freep(&s);
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return s;
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}
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void av_fft_permute(FFTContext *s, FFTComplex *z)
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{
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s->fft_permute(s, z);
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}
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void av_fft_calc(FFTContext *s, FFTComplex *z)
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{
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s->fft_calc(s, z);
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}
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void av_fft_end(FFTContext *s)
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{
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if (s) {
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ff_fft_end(s);
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av_free(s);
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}
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}
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#if CONFIG_MDCT
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FFTContext *av_mdct_init(int nbits, int inverse, double scale)
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{
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FFTContext *s = av_malloc(sizeof(*s));
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if (s && ff_mdct_init(s, nbits, inverse, scale))
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av_freep(&s);
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return s;
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}
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void av_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input)
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{
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s->imdct_calc(s, output, input);
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}
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void av_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input)
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{
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s->imdct_half(s, output, input);
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}
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void av_mdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input)
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{
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s->mdct_calc(s, output, input);
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}
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void av_mdct_end(FFTContext *s)
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{
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if (s) {
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ff_mdct_end(s);
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av_free(s);
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}
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}
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#endif /* CONFIG_MDCT */
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#if CONFIG_RDFT
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RDFTContext *av_rdft_init(int nbits, enum RDFTransformType trans)
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{
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RDFTContext *s = av_malloc(sizeof(*s));
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if (s && ff_rdft_init(s, nbits, trans))
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av_freep(&s);
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return s;
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}
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void av_rdft_calc(RDFTContext *s, FFTSample *data)
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{
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ff_rdft_calc(s, data);
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}
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void av_rdft_end(RDFTContext *s)
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{
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if (s) {
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ff_rdft_end(s);
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av_free(s);
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}
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}
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#endif /* CONFIG_RDFT */
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#if CONFIG_DCT
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DCTContext *av_dct_init(int nbits, enum DCTTransformType inverse)
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{
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DCTContext *s = av_malloc(sizeof(*s));
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if (s && ff_dct_init(s, nbits, inverse))
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av_freep(&s);
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return s;
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}
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void av_dct_calc(DCTContext *s, FFTSample *data)
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{
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ff_dct_calc(s, data);
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}
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void av_dct_end(DCTContext *s)
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{
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if (s) {
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ff_dct_end(s);
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av_free(s);
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}
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}
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#endif /* CONFIG_DCT */
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