forked from mirror/libbpg
88 lines
3.3 KiB
C
88 lines
3.3 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2012 Ronald S. Bultje
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
* Core video DSP helper functions
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef AVCODEC_VIDEODSP_H
|
||
|
|
#define AVCODEC_VIDEODSP_H
|
||
|
|
|
||
|
|
#include <stddef.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
#define EMULATED_EDGE(depth) \
|
||
|
|
void ff_emulated_edge_mc_ ## depth(uint8_t *dst, const uint8_t *src, \
|
||
|
|
ptrdiff_t dst_stride, ptrdiff_t src_stride, \
|
||
|
|
int block_w, int block_h,\
|
||
|
|
int src_x, int src_y, int w, int h);
|
||
|
|
|
||
|
|
EMULATED_EDGE(8)
|
||
|
|
EMULATED_EDGE(16)
|
||
|
|
|
||
|
|
typedef struct VideoDSPContext {
|
||
|
|
/**
|
||
|
|
* Copy a rectangular area of samples to a temporary buffer and replicate
|
||
|
|
* the border samples.
|
||
|
|
*
|
||
|
|
* @param dst destination buffer
|
||
|
|
* @param dst_stride number of bytes between 2 vertically adjacent samples
|
||
|
|
* in destination buffer
|
||
|
|
* @param src source buffer
|
||
|
|
* @param dst_linesize number of bytes between 2 vertically adjacent
|
||
|
|
* samples in the destination buffer
|
||
|
|
* @param src_linesize number of bytes between 2 vertically adjacent
|
||
|
|
* samples in both the source buffer
|
||
|
|
* @param block_w width of block
|
||
|
|
* @param block_h height of block
|
||
|
|
* @param src_x x coordinate of the top left sample of the block in the
|
||
|
|
* source buffer
|
||
|
|
* @param src_y y coordinate of the top left sample of the block in the
|
||
|
|
* source buffer
|
||
|
|
* @param w width of the source buffer
|
||
|
|
* @param h height of the source buffer
|
||
|
|
*/
|
||
|
|
void (*emulated_edge_mc)(uint8_t *dst, const uint8_t *src,
|
||
|
|
ptrdiff_t dst_linesize,
|
||
|
|
ptrdiff_t src_linesize,
|
||
|
|
int block_w, int block_h,
|
||
|
|
int src_x, int src_y, int w, int h);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prefetch memory into cache (if supported by hardware).
|
||
|
|
*
|
||
|
|
* @param buf pointer to buffer to prefetch memory from
|
||
|
|
* @param stride distance between two lines of buf (in bytes)
|
||
|
|
* @param h number of lines to prefetch
|
||
|
|
*/
|
||
|
|
void (*prefetch)(uint8_t *buf, ptrdiff_t stride, int h);
|
||
|
|
} VideoDSPContext;
|
||
|
|
|
||
|
|
void ff_videodsp_init(VideoDSPContext *ctx, int bpc);
|
||
|
|
|
||
|
|
/* for internal use only (i.e. called by ff_videodsp_init() */
|
||
|
|
void ff_videodsp_init_aarch64(VideoDSPContext *ctx, int bpc);
|
||
|
|
void ff_videodsp_init_arm(VideoDSPContext *ctx, int bpc);
|
||
|
|
void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc);
|
||
|
|
void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc);
|
||
|
|
|
||
|
|
#endif /* AVCODEC_VIDEODSP_H */
|