/*
* 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
*/
#ifndef AVCODEC_ME_CMP_H
#define AVCODEC_ME_CMP_H
#include <stdint.h>
#include "avcodec.h"
/* minimum alignment rules ;)
* If you notice errors in the align stuff , need more alignment for some ASM code
* for some CPU or need to use a function with less aligned data then send a mail
* to the ffmpeg - devel mailing list , . . .
*
* ! warning These alignments might not match reality , ( missing attribute ( ( align ) )
* stuff somewhere possible ) .
* I ( Michael ) did not check them , these are just the alignments which I think
* could be reached easily . . .
*
* ! future video codecs might need functions with less strict alignment
*/
typedef struct MPVEncContext MPVEncContext;
/* Motion estimation:
* h is limited to { width / 2 , width , 2 * width } ,
* but never larger than 16 and never smaller than 2 .
* Although currently h < 4 is not used as functions with
* width < 8 are neither used nor implemented. */
typedef int (*me_cmp_func)(MPVEncContext *c,
const uint8_t *blk1 /* align width (8 or 16) */,
const uint8_t *blk2 /* align 1 */, ptrdiff_t stride,
int h);
typedef struct MECmpContext {
int (*sum_abs_dctelem)(const int16_t *block /* align 16 */);
me_cmp_func sad[6 ]; /* identical to pix_absAxA except additional void * */
me_cmp_func sse[6 ];
me_cmp_func hadamard8_diff[6 ];
me_cmp_func dct_sad[6 ];
me_cmp_func quant_psnr[6 ];
me_cmp_func bit[6 ];
me_cmp_func rd[6 ];
me_cmp_func vsad[6 ];
me_cmp_func vsse[6 ];
me_cmp_func nsse[6 ];
me_cmp_func w53[6 ];
me_cmp_func w97[6 ];
me_cmp_func dct_max[6 ];
me_cmp_func dct264_sad[6 ];
me_cmp_func pix_abs[2 ][4 ];
me_cmp_func median_sad[6 ];
} MECmpContext;
void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx);
void ff_me_cmp_init_aarch64(MECmpContext *c, AVCodecContext *avctx);
void ff_me_cmp_init_arm(MECmpContext *c, AVCodecContext *avctx);
void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx);
void ff_me_cmp_init_riscv(MECmpContext *c, AVCodecContext *avctx);
void ff_me_cmp_init_x86(MECmpContext *c, AVCodecContext *avctx);
void ff_me_cmp_init_mips(MECmpContext *c, AVCodecContext *avctx);
/**
* Fill the function pointer array cmp [ 6 ] with me_cmp_funcs from
* c based upon type . If mpvenc is not set , an error is returned
* if the type of comparison functions requires an initialized
* MPVEncContext .
*/
int ff_set_cmp(const MECmpContext *c, me_cmp_func *cmp,
int type, int mpvenc);
void ff_dsputil_init_dwt(MECmpContext *c);
#endif /* AVCODEC_ME_CMP_H */
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