mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.5 KiB
57 lines
1.5 KiB
/* |
|
* 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_OPUS_IMDCT_H |
|
#define AVCODEC_OPUS_IMDCT_H |
|
|
|
#include <stddef.h> |
|
|
|
#include "avfft.h" |
|
|
|
typedef struct CeltIMDCTContext { |
|
int fft_n; |
|
int len2; |
|
int len4; |
|
|
|
FFTComplex *tmp; |
|
|
|
FFTComplex *twiddle_exptab; |
|
|
|
FFTComplex *exptab[6]; |
|
|
|
/** |
|
* Calculate the middle half of the iMDCT |
|
*/ |
|
void (*imdct_half)(struct CeltIMDCTContext *s, float *dst, const float *src, |
|
ptrdiff_t src_stride, float scale); |
|
} CeltIMDCTContext; |
|
|
|
/** |
|
* Init an iMDCT of the length 2 * 15 * (2^N) |
|
*/ |
|
int ff_celt_imdct_init(CeltIMDCTContext **s, int N); |
|
|
|
/** |
|
* Free an iMDCT. |
|
*/ |
|
void ff_celt_imdct_uninit(CeltIMDCTContext **s); |
|
|
|
|
|
void ff_celt_imdct_init_aarch64(CeltIMDCTContext *s); |
|
|
|
#endif /* AVCODEC_OPUS_IMDCT_H */
|
|
|