1 /* 2 * Copyright (c) 2010 Nolan Lum <nol888@gmail.com> 3 * Copyright (c) 2009 Loren Merritt <lorenm@u.washington.edu> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22 #ifndef AVFILTER_GRADFUN_H 23 #define AVFILTER_GRADFUN_H 24 25 #include "avfilter.h" 26 27 /// Holds instance-specific information for gradfun. 28 typedef struct GradFunContext { 29 const AVClass *class; 30 float strength; 31 int thresh; ///< threshold for gradient algorithm 32 int radius; ///< blur radius 33 int chroma_w; ///< width of the chroma planes 34 int chroma_h; ///< weight of the chroma planes 35 int chroma_r; ///< blur radius for the chroma planes 36 uint16_t *buf; ///< holds image data for blur algorithm passed into filter. 37 /// DSP functions. 38 void (*filter_line) (uint8_t *dst, const uint8_t *src, const uint16_t *dc, int width, int thresh, const uint16_t *dithers); 39 void (*blur_line) (uint16_t *dc, uint16_t *buf, const uint16_t *buf1, const uint8_t *src, int src_linesize, int width); 40 } GradFunContext; 41 42 void ff_gradfun_init_x86(GradFunContext *gf); 43 44 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); 45 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); 46 47 #endif /* AVFILTER_GRADFUN_H */ 48