yading@10: /*
yading@10:  * Copyright (C) 2012 Ronald S. Bultje
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * Core video DSP helper functions
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_VIDEODSP_H
yading@10: #define AVCODEC_VIDEODSP_H
yading@10: 
yading@10: #include <stddef.h>
yading@10: #include <stdint.h>
yading@10: 
yading@10: #define EMULATED_EDGE(depth) \
yading@10: void ff_emulated_edge_mc_ ## depth (uint8_t *buf, const uint8_t *src, ptrdiff_t linesize,\
yading@10:                          int block_w, int block_h,\
yading@10:                          int src_x, int src_y, int w, int h);
yading@10: 
yading@10: EMULATED_EDGE(8)
yading@10: EMULATED_EDGE(16)
yading@10: 
yading@10: typedef struct VideoDSPContext {
yading@10:     /**
yading@10:      * Copy a rectangular area of samples to a temporary buffer and replicate
yading@10:      * the border samples.
yading@10:      *
yading@10:      * @param buf destination buffer
yading@10:      * @param src source buffer
yading@10:      * @param linesize number of bytes between 2 vertically adjacent samples
yading@10:      *                 in both the source and destination buffers
yading@10:      * @param block_w width of block
yading@10:      * @param block_h height of block
yading@10:      * @param src_x x coordinate of the top left sample of the block in the
yading@10:      *                source buffer
yading@10:      * @param src_y y coordinate of the top left sample of the block in the
yading@10:      *                source buffer
yading@10:      * @param w width of the source buffer
yading@10:      * @param h height of the source buffer
yading@10:      */
yading@10:     void (*emulated_edge_mc)(uint8_t *buf, const uint8_t *src,
yading@10:                              ptrdiff_t linesize, int block_w, int block_h,
yading@10:                              int src_x, int src_y, int w, int h);
yading@10: 
yading@10:     /**
yading@10:      * Prefetch memory into cache (if supported by hardware).
yading@10:      *
yading@10:      * @buf pointer to buffer to prefetch memory from
yading@10:      * @stride distance between two lines of buf (in bytes)
yading@10:      * @h number of lines to prefetch
yading@10:      */
yading@10:     void (*prefetch)(uint8_t *buf, ptrdiff_t stride, int h);
yading@10: } VideoDSPContext;
yading@10: 
yading@10: void ff_videodsp_init(VideoDSPContext *ctx, int bpc);
yading@10: 
yading@10: /* for internal use only (i.e. called by ff_videodsp_init() */
yading@10: void ff_videodsp_init_arm(VideoDSPContext *ctx, int bpc);
yading@10: void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc);
yading@10: void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc);
yading@10: 
yading@10: #endif /* AVCODEC_VIDEODSP_H */