diff options
Diffstat (limited to 'chromium/third_party/ffmpeg/libavcodec/opus_imdct.h')
-rw-r--r-- | chromium/third_party/ffmpeg/libavcodec/opus_imdct.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/chromium/third_party/ffmpeg/libavcodec/opus_imdct.h b/chromium/third_party/ffmpeg/libavcodec/opus_imdct.h new file mode 100644 index 00000000000..0ca4d973d0e --- /dev/null +++ b/chromium/third_party/ffmpeg/libavcodec/opus_imdct.h @@ -0,0 +1,57 @@ +/* + * 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 */ |