1/* 2 * This file is part of FFmpeg. 3 * 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. 8 * 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. 13 * 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 17 */ 18 19#ifndef AVCODEC_OPUSDSP_H 20#define AVCODEC_OPUSDSP_H 21 22#define CELT_EMPH_COEFF 0.8500061035f 23 24typedef struct OpusDSP { 25 void (*postfilter)(float *data, int period, float *gains, int len); 26 float (*deemphasis)(float *out, float *in, float coeff, int len); 27} OpusDSP; 28 29void ff_opus_dsp_init(OpusDSP *ctx); 30 31void ff_opus_dsp_init_x86(OpusDSP *ctx); 32void ff_opus_dsp_init_aarch64(OpusDSP *ctx); 33 34#endif /* AVCODEC_OPUSDSP_H */ 35