diff options
Diffstat (limited to 'plugins/supereq/ffmpeg_fft/libavcodec/avfft.h')
-rw-r--r-- | plugins/supereq/ffmpeg_fft/libavcodec/avfft.h | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/plugins/supereq/ffmpeg_fft/libavcodec/avfft.h b/plugins/supereq/ffmpeg_fft/libavcodec/avfft.h deleted file mode 100644 index fdf30237..00000000 --- a/plugins/supereq/ffmpeg_fft/libavcodec/avfft.h +++ /dev/null @@ -1,103 +0,0 @@ -/* - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#ifndef AVCODEC_AVFFT_H -#define AVCODEC_AVFFT_H - -#include "publik.h" - -typedef float FFTSample; - -typedef struct FFTComplex { - FFTSample re, im; -} FFTComplex; - -typedef struct FFTContext FFTContext; - -/** - * Set up a complex FFT. - * @param nbits log2 of the length of the input array - * @param inverse if 0 perform the forward transform, if 1 perform the inverse - */ -PUBLIK FFTContext *av_fft_init(int nbits, int inverse); - -/** - * Do the permutation needed BEFORE calling ff_fft_calc(). - */ -PUBLIK void av_fft_permute(FFTContext *s, FFTComplex *z); - -/** - * Do a complex FFT with the parameters defined in av_fft_init(). The - * input data must be permuted before. No 1.0/sqrt(n) normalization is done. - */ -PUBLIK void av_fft_calc(FFTContext *s, FFTComplex *z); - -PUBLIK void av_fft_end(FFTContext *s); - -#if 0 -FFTContext *av_mdct_init(int nbits, int inverse, double scale); -void av_imdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input); -void av_imdct_half(FFTContext *s, FFTSample *output, const FFTSample *input); -void av_mdct_calc(FFTContext *s, FFTSample *output, const FFTSample *input); -void av_mdct_end(FFTContext *s); -#endif - -/* Real Discrete Fourier Transform */ - -enum RDFTransformType { - DFT_R2C, - IDFT_C2R, - IDFT_R2C, - DFT_C2R, -}; - -typedef struct RDFTContext RDFTContext; - -/** - * Set up a real FFT. - * @param nbits log2 of the length of the input array - * @param trans the type of transform - */ -PUBLIK RDFTContext *av_rdft_init(int nbits, enum RDFTransformType trans); -PUBLIK void av_rdft_calc(RDFTContext *s, FFTSample *data); -PUBLIK void av_rdft_end(RDFTContext *s); - -/* Discrete Cosine Transform */ - -typedef struct DCTContext DCTContext; - -enum DCTTransformType { - DCT_II = 0, - DCT_III, - DCT_I, - DST_I, -}; - -/** - * Set up DCT. - * @param nbits size of the input array: - * (1 << nbits) for DCT-II, DCT-III and DST-I - * (1 << nbits) + 1 for DCT-I - * - * @note the first element of the input of DST-I is ignored - */ -PUBLIK DCTContext *av_dct_init(int nbits, enum DCTTransformType type); -PUBLIK void av_dct_calc(DCTContext *s, FFTSample *data); -PUBLIK void av_dct_end (DCTContext *s); - -#endif /* AVCODEC_AVFFT_H */ |