mirror of
https://github.com/nyanmisaka/ffmpeg-rockchip.git
synced 2025-10-31 12:36:41 +08:00
80 lines
2.8 KiB
C
80 lines
2.8 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 *buf, const uint8_t *src, ptrdiff_t linesize,\
|
|
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 buf destination buffer
|
|
* @param src source buffer
|
|
* @param linesize number of bytes between 2 vertically adjacent samples
|
|
* in both the source and destination buffers
|
|
* @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 *buf, const uint8_t *src,
|
|
ptrdiff_t 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).
|
|
*
|
|
* @buf pointer to buffer to prefetch memory from
|
|
* @stride distance between two lines of buf (in bytes)
|
|
* @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_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 */
|