blob: 4d338651fae2ad02537bd196d095e93f8267a3a6
| 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 - ((b0 + b2 + 2) >> 2)) |
| 97 | |
| 98 | #define COMPOSE_DIRAC53iH0(b0, b1, b2)\ |
| 99 | (b1 + ((b0 + b2 + 1) >> 1)) |
| 100 | |
| 101 | #define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)\ |
| 102 | (b2 + ((-b0 + 9*b1 + 9*b3 - b4 + 8) >> 4)) |
| 103 | |
| 104 | #define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\ |
| 105 | (b2 - ((-b0 + 9*b1 + 9*b3 - b4 + 16) >> 5)) |
| 106 | |
| 107 | #define COMPOSE_HAARiL0(b0, b1)\ |
| 108 | (b0 - ((b1 + 1) >> 1)) |
| 109 | |
| 110 | #define COMPOSE_HAARiH0(b0, b1)\ |
| 111 | (b0 + b1) |
| 112 | |
| 113 | #define COMPOSE_FIDELITYiL0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\ |
| 114 | (b4 - ((-8*(b0+b8) + 21*(b1+b7) - 46*(b2+b6) + 161*(b3+b5) + 128) >> 8)) |
| 115 | |
| 116 | #define COMPOSE_FIDELITYiH0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\ |
| 117 | (b4 + ((-2*(b0+b8) + 10*(b1+b7) - 25*(b2+b6) + 81*(b3+b5) + 128) >> 8)) |
| 118 | |
| 119 | #define COMPOSE_DAUB97iL1(b0, b1, b2)\ |
| 120 | (b1 - ((1817*(b0 + b2) + 2048) >> 12)) |
| 121 | |
| 122 | #define COMPOSE_DAUB97iH1(b0, b1, b2)\ |
| 123 | (b1 - (( 113*(b0 + b2) + 64) >> 7)) |
| 124 | |
| 125 | #define COMPOSE_DAUB97iL0(b0, b1, b2)\ |
| 126 | (b1 + (( 217*(b0 + b2) + 2048) >> 12)) |
| 127 | |
| 128 | #define COMPOSE_DAUB97iH0(b0, b1, b2)\ |
| 129 | (b1 + ((6497*(b0 + b2) + 2048) >> 12)) |
| 130 | |
| 131 | |
| 132 | #endif /* AVCODEC_DWT_H */ |
| 133 |