/*

  * 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"

 extern uint32_t 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,

                            uint8_t *blk1 /* align width (8 or 16) */,

                            uint8_t *blk2 /* align 1 */, ptrdiff_t stride,
                            int h);

 typedef struct MECmpContext {

     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];

     me_cmp_func median_sad[6];

 } MECmpContext;

 void ff_me_cmp_init_static(void);

 int ff_check_alignment(void);
 

 void ff_me_cmp_init(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_x86(MECmpContext *c, AVCodecContext *avctx);

 void ff_me_cmp_init_mips(MECmpContext *c, AVCodecContext *avctx);

 void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type);

 void ff_dsputil_init_dwt(MECmpContext *c);

 #endif /* AVCODEC_ME_CMP_H */