1/* 2 * Copyright (C) 2012 Ronald S. Bultje 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21/** 22 * @file 23 * Core video DSP helper functions 24 */ 25 26#ifndef AVCODEC_VIDEODSP_H 27#define AVCODEC_VIDEODSP_H 28 29#include <stddef.h> 30#include <stdint.h> 31 32#define EMULATED_EDGE(depth) \ 33void ff_emulated_edge_mc_ ## depth(uint8_t *dst, const uint8_t *src, \ 34 ptrdiff_t dst_stride, ptrdiff_t src_stride, \ 35 int block_w, int block_h,\ 36 int src_x, int src_y, int w, int h); 37 38EMULATED_EDGE(8) 39 40typedef struct VideoDSPContext { 41 /** 42 * Copy a rectangular area of samples to a temporary buffer and replicate 43 * the border samples. 44 * 45 * @param dst destination buffer 46 * @param dst_stride number of bytes between 2 vertically adjacent samples 47 * in destination buffer 48 * @param src source buffer 49 * @param dst_linesize number of bytes between 2 vertically adjacent 50 * samples in the destination buffer 51 * @param src_linesize number of bytes between 2 vertically adjacent 52 * samples in both the source buffer 53 * @param block_w width of block 54 * @param block_h height of block 55 * @param src_x x coordinate of the top left sample of the block in the 56 * source buffer 57 * @param src_y y coordinate of the top left sample of the block in the 58 * source buffer 59 * @param w width of the source buffer 60 * @param h height of the source buffer 61 */ 62 void (*emulated_edge_mc)(uint8_t *dst, const uint8_t *src, 63 ptrdiff_t dst_linesize, 64 ptrdiff_t src_linesize, 65 int block_w, int block_h, 66 int src_x, int src_y, int w, int h); 67 68 /** 69 * Prefetch memory into cache (if supported by hardware). 70 * 71 * @param buf pointer to buffer to prefetch memory from 72 * @param stride distance between two lines of buf (in bytes) 73 * @param h number of lines to prefetch 74 */ 75 void (*prefetch)(uint8_t *buf, ptrdiff_t stride, int h); 76} VideoDSPContext; 77 78void ff_videodsp_init(VideoDSPContext *ctx, int bpc); 79 80/* for internal use only (i.e. called by ff_videodsp_init() */ 81void ff_videodsp_init_aarch64(VideoDSPContext *ctx, int bpc); 82void ff_videodsp_init_arm(VideoDSPContext *ctx, int bpc); 83void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc); 84void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc); 85void ff_videodsp_init_mips(VideoDSPContext *ctx, int bpc); 86void ff_videodsp_init_loongarch(VideoDSPContext *ctx, int bpc); 87 88#endif /* AVCODEC_VIDEODSP_H */ 89