dsputil.h

Go to the documentation of this file.

/*
 * DSP utils
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
 *
 * 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
 * DSP utils.
 * This is deprecated
 */

#ifndef AVCODEC_DSPUTIL_H
#define AVCODEC_DSPUTIL_H

#include "avcodec.h"
#include "version.h"
#include "me_cmp.h"

#if FF_API_DSPUTIL

/* 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;

/**
 * DSPContext.
 */
typedef struct DSPContext {
    int (*sum_abs_dctelem)(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 me_pre_cmp[6];
    me_cmp_func me_cmp[6];
    me_cmp_func me_sub_cmp[6];
    me_cmp_func mb_cmp[6];
    me_cmp_func ildct_cmp[6]; // only width 16 used
    me_cmp_func frame_skip_cmp[6]; // only width 8 used

    me_cmp_func pix_abs[2][4];
} DSPContext;

attribute_deprecated void avpriv_dsputil_init(DSPContext* p, AVCodecContext *avctx);

#endif
#endif /* AVCODEC_DSPUTIL_H */