/* * Copyright (c) 2010 Nolan Lum <nol888@gmail.com> * Copyright (c) 2009 Loren Merritt <lorenm@u.washington.edu> * * 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 AVFILTER_GRADFUN_H#define AVFILTER_GRADFUN_H #include "avfilter.h" /// Holds instance-specific information for gradfun.typedef struct GradFunContext {    const AVClass *class;    float strength;    int thresh;    ///< threshold for gradient algorithm    int radius;    ///< blur radius    int chroma_w;  ///< width of the chroma planes    int chroma_h;  ///< weight of the chroma planes    int chroma_r;  ///< blur radius for the chroma planes    uint16_t *buf; ///< holds image data for blur algorithm passed into filter.    /// DSP functions.    void (*filter_line) (uint8_t *dst, const uint8_t *src, const uint16_t *dc, int width, int thresh, const uint16_t *dithers);    void (*blur_line) (uint16_t *dc, uint16_t *buf, const uint16_t *buf1, const uint8_t *src, int src_linesize, int width);} GradFunContext; void ff_gradfun_init_x86(GradFunContext *gf); void ff_gradfun_filter_line_c(uint8_t *dst, const uint8_t *src, const uint16_t *dc, int width, int thresh, const uint16_t *dithers);void ff_gradfun_blur_line_c(uint16_t *dc, uint16_t *buf, const uint16_t *buf1, const uint8_t *src, int src_linesize, int width); #endif /* AVFILTER_GRADFUN_H */