1 /* 2 * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at> 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #ifndef AVCODEC_DIRAC_DWT_H 22 #define AVCODEC_DIRAC_DWT_H 23 24 #include <stdint.h> 25 26 typedef int DWTELEM; 27 typedef short IDWTELEM; 28 29 #define MAX_DWT_SUPPORT 8 30 #define MAX_DECOMPOSITIONS 8 31 32 typedef struct DWTCompose { 33 uint8_t *b[MAX_DWT_SUPPORT]; 34 int y; 35 } DWTCompose; 36 37 typedef struct DWTPlane { 38 int width; 39 int height; 40 int stride; 41 uint8_t *buf; 42 uint8_t *buf_base; 43 uint8_t *tmp; 44 } DWTPlane; 45 46 struct DWTContext; 47 48 // Possible prototypes for vertical_compose functions 49 typedef void (*vertical_compose_2tap)(uint8_t *b0, uint8_t *b1, int width); 50 typedef void (*vertical_compose_3tap)(uint8_t *b0, uint8_t *b1, uint8_t *b2, int width); 51 typedef void (*vertical_compose_5tap)(uint8_t *b0, uint8_t *b1, uint8_t *b2, uint8_t *b3, uint8_t *b4, int width); 52 typedef void (*vertical_compose_9tap)(uint8_t *dst, uint8_t *b[8], int width); 53 54 typedef struct DWTContext { 55 uint8_t *buffer; 56 uint8_t *temp; 57 int width; 58 int height; 59 int stride; 60 int decomposition_count; 61 int support; 62 63 void (*spatial_compose)(struct DWTContext *cs, int level, int width, int height, int stride); 64 void (*vertical_compose_l0)(void); 65 void (*vertical_compose_h0)(void); 66 void (*vertical_compose_l1)(void); 67 void (*vertical_compose_h1)(void); 68 void (*vertical_compose)(void); ///< one set of lowpass and highpass combined 69 void (*horizontal_compose)(uint8_t *b, uint8_t *tmp, int width); 70 71 DWTCompose cs[MAX_DECOMPOSITIONS]; 72 } DWTContext; 73 74 enum dwt_type { 75 DWT_SNOW_DAUB9_7, 76 DWT_SNOW_LEGALL5_3, 77 DWT_DIRAC_DD9_7, 78 DWT_DIRAC_LEGALL5_3, 79 DWT_DIRAC_DD13_7, 80 DWT_DIRAC_HAAR0, 81 DWT_DIRAC_HAAR1, 82 DWT_DIRAC_FIDELITY, 83 DWT_DIRAC_DAUB9_7, 84 DWT_NUM_TYPES 85 }; 86 87 // -1 if an error occurred, e.g. the dwt_type isn't recognized 88 int ff_spatial_idwt_init(DWTContext *d, DWTPlane *p, enum dwt_type type, 89 int decomposition_count, int bit_depth); 90 void ff_spatial_idwt_init_x86(DWTContext *d, enum dwt_type type); 91 92 void ff_spatial_idwt_slice2(DWTContext *d, int y); 93 94 // shared stuff for simd optimizations 95 #define COMPOSE_53iL0(b0, b1, b2)\ 96 (b1 - (unsigned)((int)(b0 + (unsigned)(b2) + 2) >> 2)) 97 98 #define COMPOSE_DIRAC53iH0(b0, b1, b2)\ 99 (b1 + (unsigned)((int)(b0 + (unsigned)(b2) + 1) >> 1)) 100 101 #define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)\ 102 (int)(((unsigned)(b2) + ((int)(9U*b1 + 9U*b3 - b4 - b0 + 8) >> 4))) 103 104 #define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\ 105 (int)(((unsigned)(b2) - ((int)(9U*b1 + 9U*b3 - b4 - b0 + 16) >> 5))) 106 107 #define COMPOSE_HAARiL0(b0, b1)\ 108 ((int)(b0 - (unsigned)((int)(b1 + 1U) >> 1))) 109 110 #define COMPOSE_HAARiH0(b0, b1)\ 111 ((int)(b0 + (unsigned)(b1))) 112 113 #define COMPOSE_FIDELITYiL0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\ 114 ((unsigned)b4 - ((int)(-8*(b0+(unsigned)b8) + 21*(b1+(unsigned)b7) - 46*(b2+(unsigned)b6) + 161*(b3+(unsigned)b5) + 128) >> 8)) 115 116 #define COMPOSE_FIDELITYiH0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\ 117 ((unsigned)b4 + ((int)(-2*(b0+(unsigned)b8) + 10*(b1+(unsigned)b7) - 25*(b2+(unsigned)b6) + 81*(b3+(unsigned)b5) + 128) >> 8)) 118 119 #define COMPOSE_DAUB97iL1(b0, b1, b2)\ 120 ((unsigned)(b1) - ((int)(1817*(b0 + (unsigned)b2) + 2048) >> 12)) 121 122 #define COMPOSE_DAUB97iH1(b0, b1, b2)\ 123 ((unsigned)(b1) - ((int)( 113*(b0 + (unsigned)b2) + 64) >> 7)) 124 125 #define COMPOSE_DAUB97iL0(b0, b1, b2)\ 126 ((unsigned)(b1) + ((int)( 217*(b0 + (unsigned)b2) + 2048) >> 12)) 127 128 #define COMPOSE_DAUB97iH0(b0, b1, b2)\ 129 ((unsigned)(b1) + ((int)(6497*(b0 + (unsigned)b2) + 2048) >> 12)) 130 131 132 #endif /* AVCODEC_DWT_H */ 133