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/*
* 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 "libavutil/attributes_internal.h"
#include "avcodec.h"
extern const uint32_t attribute_visibility_hidden ff_square_tab[512];
/* 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
*/
struct MpegEncContext;
/* 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)(struct MpegEncContext *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_alpha(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
* MpegEncContext.
*/
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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