2 * This file is part of FFmpeg.
4 * FFmpeg 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
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #ifndef AVCODEC_OPUSDSP_H
20 #define AVCODEC_OPUSDSP_H
22 #include "libavutil/common.h"
24 #define CELT_EMPH_COEFF 0.8500061035f
26 typedef struct OpusDSP {
27 void (*postfilter)(float *data, int period, float *gains, int len);
28 float (*deemphasis)(float *out, float *in, float coeff, int len);
31 void ff_opus_dsp_init(OpusDSP *ctx);
33 void ff_opus_dsp_init_x86(OpusDSP *ctx);
34 void ff_opus_dsp_init_aarch64(OpusDSP *ctx);
36 #endif /* AVCODEC_OPUSDSP_H */