Libav
opus_imdct.h
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1 /*
2  * This file is part of Libav.
3  *
4  * Libav is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
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17  */
18 
19 #ifndef AVCODEC_OPUS_IMDCT_H
20 #define AVCODEC_OPUS_IMDCT_H
21 
22 #include <stddef.h>
23 
24 #include "avfft.h"
25 
26 typedef struct CeltIMDCTContext {
27  int fft_n;
28  int len2;
29  int len4;
30 
32 
34 
36 
40  void (*imdct_half)(struct CeltIMDCTContext *s, float *dst, const float *src,
41  ptrdiff_t src_stride, float scale);
43 
47 int ff_celt_imdct_init(CeltIMDCTContext **s, int N);
48 
53 
54 
56 
57 #endif /* AVCODEC_OPUS_IMDCT_H */
FFTComplex * exptab[6]
Definition: opus_imdct.h:35
void ff_celt_imdct_uninit(CeltIMDCTContext **s)
Free an iMDCT.
Definition: opus_imdct.c:69
int ff_celt_imdct_init(CeltIMDCTContext **s, int N)
Init an iMDCT of the length 2 * 15 * (2^N)
Definition: opus_imdct.c:90
FFTComplex * tmp
Definition: opus_imdct.h:31
FFTComplex * twiddle_exptab
Definition: opus_imdct.h:33
FFT functions.
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
void ff_celt_imdct_init_aarch64(CeltIMDCTContext *s)
void(* imdct_half)(struct CeltIMDCTContext *s, float *dst, const float *src, ptrdiff_t src_stride, float scale)
Calculate the middle half of the iMDCT.
Definition: opus_imdct.h:40