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/*
* thirdpel DSP functions
*
* 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
* thirdpel DSP functions
*/
#ifndef AVCODEC_TPELDSP_H
#define AVCODEC_TPELDSP_H
#include <stdint.h>
/* add and put pixel (decoding) */
// blocksizes for hpel_pixels_func are 8x4,8x8 16x8 16x16
// h for hpel_pixels_func is limited to {width/2, width} but never larger
// than 16 and never smaller than 4
typedef void (*tpel_mc_func)(uint8_t *block /* align width (8 or 16) */,
const uint8_t *pixels /* align 1 */,
int line_size, int w, int h);
/**
* thirdpel DSP context
*/
typedef struct TpelDSPContext {
/**
* Thirdpel motion compensation with rounding (a + b + 1) >> 1.
* this is an array[12] of motion compensation functions for the
* 9 thirdpel positions<br>
* *pixels_tab[xthirdpel + 4 * ythirdpel]
* @param block destination where the result is stored
* @param pixels source
* @param line_size number of bytes in a horizontal line of block
* @param h height
*/
tpel_mc_func put_tpel_pixels_tab[11]; // FIXME individual func ptr per width?
tpel_mc_func avg_tpel_pixels_tab[11]; // FIXME individual func ptr per width?
} TpelDSPContext;
void ff_tpeldsp_init(TpelDSPContext *c);
#endif /* AVCODEC_TPELDSP_H */
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