dct.h
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/*****************************************************************************
* dct.h: transform and zigzag
*****************************************************************************
* Copyright (C) 2004-2024 x264 project
*
* Authors: Loren Merritt <lorenm@u.washington.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at licensing@x264.com.
*****************************************************************************/
#ifndef X264_DCT_H
#define X264_DCT_H
typedef struct
{
// pix1 stride = FENC_STRIDE
// pix2 stride = FDEC_STRIDE
// p_dst stride = FDEC_STRIDE
void (*sub4x4_dct) ( dctcoef dct[16], pixel *pix1, pixel *pix2 );
void (*add4x4_idct)( pixel *p_dst, dctcoef dct[16] );
void (*sub8x8_dct) ( dctcoef dct[4][16], pixel *pix1, pixel *pix2 );
void (*sub8x8_dct_dc) ( dctcoef dct[4], pixel *pix1, pixel *pix2 );
void (*add8x8_idct) ( pixel *p_dst, dctcoef dct[4][16] );
void (*add8x8_idct_dc)( pixel *p_dst, dctcoef dct[4] );
void (*sub8x16_dct_dc)( dctcoef dct[8], pixel *pix1, pixel *pix2 );
void (*sub16x16_dct) ( dctcoef dct[16][16], pixel *pix1, pixel *pix2 );
void (*add16x16_idct) ( pixel *p_dst, dctcoef dct[16][16] );
void (*add16x16_idct_dc)( pixel *p_dst, dctcoef dct[16] );
void (*sub8x8_dct8) ( dctcoef dct[64], pixel *pix1, pixel *pix2 );
void (*add8x8_idct8)( pixel *p_dst, dctcoef dct[64] );
void (*sub16x16_dct8) ( dctcoef dct[4][64], pixel *pix1, pixel *pix2 );
void (*add16x16_idct8)( pixel *p_dst, dctcoef dct[4][64] );
void (*dct4x4dc) ( dctcoef d[16] );
void (*idct4x4dc)( dctcoef d[16] );
void (*dct2x4dc)( dctcoef dct[8], dctcoef dct4x4[8][16] );
} x264_dct_function_t;
typedef struct
{
void (*scan_8x8)( dctcoef level[64], dctcoef dct[64] );
void (*scan_4x4)( dctcoef level[16], dctcoef dct[16] );
int (*sub_8x8) ( dctcoef level[64], const pixel *p_src, pixel *p_dst );
int (*sub_4x4) ( dctcoef level[16], const pixel *p_src, pixel *p_dst );
int (*sub_4x4ac)( dctcoef level[16], const pixel *p_src, pixel *p_dst, dctcoef *dc );
void (*interleave_8x8_cavlc)( dctcoef *dst, dctcoef *src, uint8_t *nnz );
} x264_zigzag_function_t;
#define x264_dct_init x264_template(dct_init)
void x264_dct_init( uint32_t cpu, x264_dct_function_t *dctf );
#define x264_zigzag_init x264_template(zigzag_init)
void x264_zigzag_init( uint32_t cpu, x264_zigzag_function_t *pf_progressive, x264_zigzag_function_t *pf_interlaced );
#endif