me_cmp.h 3.23 KB
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/*
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 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * 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
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef AVCODEC_ME_CMP_H
#define AVCODEC_ME_CMP_H
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#include <stdint.h>
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#include "avcodec.h"
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extern uint32_t ff_square_tab[512];
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/* minimum alignment rules ;)
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 * 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
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 * to the ffmpeg-devel mailing list, ...
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 *
 * !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
 */
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struct MpegEncContext;
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/* 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. */
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typedef int (*me_cmp_func)(struct MpegEncContext *c,
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                           uint8_t *blk1 /* align width (8 or 16) */,
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                           uint8_t *blk2 /* align 1 */, ptrdiff_t stride,
                           int h);
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typedef struct MECmpContext {
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    int (*sum_abs_dctelem)(int16_t *block /* align 16 */);
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    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 me_pre_cmp[6];
    me_cmp_func me_cmp[6];
    me_cmp_func me_sub_cmp[6];
    me_cmp_func mb_cmp[6];
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    me_cmp_func ildct_cmp[6]; // only width 16 used
    me_cmp_func frame_skip_cmp[6]; // only width 8 used
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    me_cmp_func pix_abs[2][4];
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} MECmpContext;
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void ff_me_cmp_init_static(void);
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int ff_check_alignment(void);

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void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx);
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void ff_me_cmp_init_alpha(MECmpContext *c, AVCodecContext *avctx);
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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_x86(MECmpContext *c, AVCodecContext *avctx);
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void ff_me_cmp_init_mips(MECmpContext *c, AVCodecContext *avctx);
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void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type);
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void ff_dsputil_init_dwt(MECmpContext *c);
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#endif /* AVCODEC_ME_CMP_H */