58dabf7bf2
Line sizes are only 8-byte aligned, so use unaliged loads for add_bytes_l2 pointers. Increasing the alignment requirement to 16 seemed a bit extreme (png may be used for rather small sizes). Also fix a mov that had its arguments swapped, leading add_bytes_l2 being applied on up to 8 bytes too few. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
/*
|
|
* PNG image format
|
|
* Copyright (c) 2008 Loren Merrit <lorenm@u.washington.edu>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_PNGDSP_H
|
|
#define AVCODEC_PNGDSP_H
|
|
|
|
#include <stdint.h>
|
|
|
|
typedef struct PNGDSPContext {
|
|
void (*add_bytes_l2)(uint8_t *dst /* align 16 */,
|
|
uint8_t *src1,
|
|
uint8_t *src2, int w);
|
|
|
|
/* this might write to dst[w] */
|
|
void (*add_paeth_prediction)(uint8_t *dst, uint8_t *src,
|
|
uint8_t *top, int w, int bpp);
|
|
} PNGDSPContext;
|
|
|
|
void ff_pngdsp_init(PNGDSPContext *dsp);
|
|
void ff_pngdsp_init_x86(PNGDSPContext *dsp);
|
|
|
|
#endif /* AVCDODEC_PNGDSP_H */
|