/* * AOM film grain synthesis * Copyright (c) 2021 Niklas Haas * * 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 */ /** * @file * AOM film grain synthesis. * @author Niklas Haas */ #ifndef AVCODEC_AOM_FILM_GRAIN_H #define AVCODEC_AOM_FILM_GRAIN_H #include "libavutil/buffer.h" #include "libavutil/film_grain_params.h" typedef struct AVFilmGrainAFGS1Params { int enable; AVBufferRef *sets[8]; } AVFilmGrainAFGS1Params; // Synthesizes film grain on top of `in` and stores the result to `out`. `out` // must already have been allocated and set to the same size and format as `in`. int ff_aom_apply_film_grain(AVFrame *out, const AVFrame *in, const AVFilmGrainParams *params); // Parse AFGS1 parameter sets from an ITU-T T.35 payload. Returns 0 on success, // or a negative error code. int ff_aom_parse_film_grain_sets(AVFilmGrainAFGS1Params *s, const uint8_t *payload, int payload_size); // Attach all valid film grain param sets to `frame`. int ff_aom_attach_film_grain_sets(const AVFilmGrainAFGS1Params *s, AVFrame *frame); // Free all allocations in `s` and zero the entire struct. void ff_aom_uninit_film_grain_params(AVFilmGrainAFGS1Params *s); #endif /* AVCODEC_AOM_FILM_GRAIN_H */