/* * Copyright (C) 2004-2010 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 */ #ifndef AVCODEC_DIRAC_DWT_H #define AVCODEC_DIRAC_DWT_H #include <stdint.h> typedef int DWTELEM; typedef short IDWTELEM; #define MAX_DWT_SUPPORT 8 #define MAX_DECOMPOSITIONS 8 typedef struct DWTCompose { uint8_t *b[MAX_DWT_SUPPORT]; int y; } DWTCompose; typedef struct DWTPlane { int width; int height; int stride; uint8_t *buf; uint8_t *buf_base; uint8_t *tmp; } DWTPlane; struct DWTContext; // Possible prototypes for vertical_compose functions typedef void (*vertical_compose_2tap)(uint8_t *b0, uint8_t *b1, int width); typedef void (*vertical_compose_3tap)(uint8_t *b0, uint8_t *b1, uint8_t *b2, int width); typedef void (*vertical_compose_5tap)(uint8_t *b0, uint8_t *b1, uint8_t *b2, uint8_t *b3, uint8_t *b4, int width); typedef void (*vertical_compose_9tap)(uint8_t *dst, uint8_t *b[8], int width); typedef struct DWTContext { uint8_t *buffer; uint8_t *temp; int width; int height; int stride; int decomposition_count; int support; void (*spatial_compose)(struct DWTContext *cs, int level, int width, int height, int stride); void (*vertical_compose_l0)(void); void (*vertical_compose_h0)(void); void (*vertical_compose_l1)(void); void (*vertical_compose_h1)(void); void (*vertical_compose)(void); ///< one set of lowpass and highpass combined void (*horizontal_compose)(uint8_t *b, uint8_t *tmp, int width); DWTCompose cs[MAX_DECOMPOSITIONS]; } DWTContext; enum dwt_type { DWT_SNOW_DAUB9_7, DWT_SNOW_LEGALL5_3, DWT_DIRAC_DD9_7, DWT_DIRAC_LEGALL5_3, DWT_DIRAC_DD13_7, DWT_DIRAC_HAAR0, DWT_DIRAC_HAAR1, DWT_DIRAC_FIDELITY, DWT_DIRAC_DAUB9_7, DWT_NUM_TYPES }; // -1 if an error occurred, e.g. the dwt_type isn't recognized int ff_spatial_idwt_init(DWTContext *d, DWTPlane *p, enum dwt_type type, int decomposition_count, int bit_depth); void ff_spatial_idwt_init_x86(DWTContext *d, enum dwt_type type); void ff_spatial_idwt_slice2(DWTContext *d, int y); // shared stuff for simd optimizations #define COMPOSE_53iL0(b0, b1, b2)\ (b1 - ((b0 + b2 + 2) >> 2)) #define COMPOSE_DIRAC53iH0(b0, b1, b2)\ (b1 + ((b0 + b2 + 1) >> 1)) #define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)\ (b2 + ((-b0 + 9*b1 + 9*b3 - b4 + 8) >> 4)) #define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\ (b2 - ((-b0 + 9*b1 + 9*b3 - b4 + 16) >> 5)) #define COMPOSE_HAARiL0(b0, b1)\ (b0 - ((b1 + 1) >> 1)) #define COMPOSE_HAARiH0(b0, b1)\ (b0 + b1) #define COMPOSE_FIDELITYiL0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\ (b4 - ((-8*(b0+b8) + 21*(b1+b7) - 46*(b2+b6) + 161*(b3+b5) + 128) >> 8)) #define COMPOSE_FIDELITYiH0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\ (b4 + ((-2*(b0+b8) + 10*(b1+b7) - 25*(b2+b6) + 81*(b3+b5) + 128) >> 8)) #define COMPOSE_DAUB97iL1(b0, b1, b2)\ (b1 - ((1817*(b0 + b2) + 2048) >> 12)) #define COMPOSE_DAUB97iH1(b0, b1, b2)\ (b1 - (( 113*(b0 + b2) + 64) >> 7)) #define COMPOSE_DAUB97iL0(b0, b1, b2)\ (b1 + (( 217*(b0 + b2) + 2048) >> 12)) #define COMPOSE_DAUB97iH0(b0, b1, b2)\ (b1 + ((6497*(b0 + b2) + 2048) >> 12)) #endif /* AVCODEC_DWT_H */