yading@10: /*
yading@10:  * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_DIRAC_DWT_H
yading@10: #define AVCODEC_DIRAC_DWT_H
yading@10: 
yading@10: #include <stdint.h>
yading@10: 
yading@10: typedef int DWTELEM;
yading@10: typedef short IDWTELEM;
yading@10: 
yading@10: #define MAX_DWT_SUPPORT 8
yading@10: #define MAX_DECOMPOSITIONS 8
yading@10: 
yading@10: typedef struct DWTCompose {
yading@10:     IDWTELEM *b[MAX_DWT_SUPPORT];
yading@10:     int y;
yading@10: } DWTCompose;
yading@10: 
yading@10: struct DWTContext;
yading@10: 
yading@10: // Possible prototypes for vertical_compose functions
yading@10: typedef void (*vertical_compose_2tap)(IDWTELEM *b0, IDWTELEM *b1, int width);
yading@10: typedef void (*vertical_compose_3tap)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width);
yading@10: typedef void (*vertical_compose_5tap)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, int width);
yading@10: typedef void (*vertical_compose_9tap)(IDWTELEM *dst, IDWTELEM *b[8], int width);
yading@10: 
yading@10: typedef struct DWTContext {
yading@10:     IDWTELEM *buffer;
yading@10:     IDWTELEM *temp;
yading@10:     int width;
yading@10:     int height;
yading@10:     int stride;
yading@10:     int decomposition_count;
yading@10:     int support;
yading@10: 
yading@10:     void (*spatial_compose)(struct DWTContext *cs, int level, int width, int height, int stride);
yading@10:     void (*vertical_compose_l0)(void);
yading@10:     void (*vertical_compose_h0)(void);
yading@10:     void (*vertical_compose_l1)(void);
yading@10:     void (*vertical_compose_h1)(void);
yading@10:     void (*vertical_compose)(void);     ///< one set of lowpass and highpass combined
yading@10:     void (*horizontal_compose)(IDWTELEM *b, IDWTELEM *tmp, int width);
yading@10: 
yading@10:     DWTCompose cs[MAX_DECOMPOSITIONS];
yading@10: } DWTContext;
yading@10: 
yading@10: enum dwt_type {
yading@10:     DWT_SNOW_DAUB9_7,
yading@10:     DWT_SNOW_LEGALL5_3,
yading@10:     DWT_DIRAC_DD9_7,
yading@10:     DWT_DIRAC_LEGALL5_3,
yading@10:     DWT_DIRAC_DD13_7,
yading@10:     DWT_DIRAC_HAAR0,
yading@10:     DWT_DIRAC_HAAR1,
yading@10:     DWT_DIRAC_FIDELITY,
yading@10:     DWT_DIRAC_DAUB9_7,
yading@10:     DWT_NUM_TYPES
yading@10: };
yading@10: 
yading@10: // -1 if an error occurred, e.g. the dwt_type isn't recognized
yading@10: int ff_spatial_idwt_init2(DWTContext *d, IDWTELEM *buffer, int width, int height,
yading@10:                           int stride, enum dwt_type type, int decomposition_count,
yading@10:                           IDWTELEM *temp);
yading@10: 
yading@10: int ff_spatial_idwt2(IDWTELEM *buffer, int width, int height, int stride,
yading@10:                      enum dwt_type type, int decomposition_count, IDWTELEM *temp);
yading@10: 
yading@10: void ff_spatial_idwt_slice2(DWTContext *d, int y);
yading@10: 
yading@10: // shared stuff for simd optimiztions
yading@10: #define COMPOSE_53iL0(b0, b1, b2)\
yading@10:     (b1 - ((b0 + b2 + 2) >> 2))
yading@10: 
yading@10: #define COMPOSE_DIRAC53iH0(b0, b1, b2)\
yading@10:     (b1 + ((b0 + b2 + 1) >> 1))
yading@10: 
yading@10: #define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)\
yading@10:     (b2 + ((-b0 + 9*b1 + 9*b3 - b4 + 8) >> 4))
yading@10: 
yading@10: #define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\
yading@10:     (b2 - ((-b0 + 9*b1 + 9*b3 - b4 + 16) >> 5))
yading@10: 
yading@10: #define COMPOSE_HAARiL0(b0, b1)\
yading@10:     (b0 - ((b1 + 1) >> 1))
yading@10: 
yading@10: #define COMPOSE_HAARiH0(b0, b1)\
yading@10:     (b0 + b1)
yading@10: 
yading@10: #define COMPOSE_FIDELITYiL0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\
yading@10:     (b4 - ((-8*(b0+b8) + 21*(b1+b7) - 46*(b2+b6) + 161*(b3+b5) + 128) >> 8))
yading@10: 
yading@10: #define COMPOSE_FIDELITYiH0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\
yading@10:     (b4 + ((-2*(b0+b8) + 10*(b1+b7) - 25*(b2+b6) + 81*(b3+b5) + 128) >> 8))
yading@10: 
yading@10: #define COMPOSE_DAUB97iL1(b0, b1, b2)\
yading@10:     (b1 - ((1817*(b0 + b2) + 2048) >> 12))
yading@10: 
yading@10: #define COMPOSE_DAUB97iH1(b0, b1, b2)\
yading@10:     (b1 - (( 113*(b0 + b2) + 64) >> 7))
yading@10: 
yading@10: #define COMPOSE_DAUB97iL0(b0, b1, b2)\
yading@10:     (b1 + (( 217*(b0 + b2) + 2048) >> 12))
yading@10: 
yading@10: #define COMPOSE_DAUB97iH0(b0, b1, b2)\
yading@10:     (b1 + ((6497*(b0 + b2) + 2048) >> 12))
yading@10: 
yading@10: 
yading@10: #endif /* AVCODEC_DWT_H */