1/* 2 * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at> 3 * 4 * This file is part of Libav. 5 * 6 * Libav 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 * Libav 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 Libav; 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_DWT_H 22#define AVCODEC_DWT_H 23 24#include <stdint.h> 25 26typedef int DWTELEM; 27typedef short IDWTELEM; 28 29typedef struct { 30 IDWTELEM *b0; 31 IDWTELEM *b1; 32 IDWTELEM *b2; 33 IDWTELEM *b3; 34 int y; 35} DWTCompose; 36 37/** Used to minimize the amount of memory used in order to optimize cache performance. **/ 38typedef struct slice_buffer_s { 39 IDWTELEM * * line; ///< For use by idwt and predict_slices. 40 IDWTELEM * * data_stack; ///< Used for internal purposes. 41 int data_stack_top; 42 int line_count; 43 int line_width; 44 int data_count; 45 IDWTELEM * base_buffer; ///< Buffer that this structure is caching. 46} slice_buffer; 47 48typedef struct DWTContext { 49 void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width); 50 void (*horizontal_compose97i)(IDWTELEM *b, int width); 51 void (*inner_add_yblock)(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h, int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8); 52} DWTContext; 53 54#define MAX_DECOMPOSITIONS 8 55 56#define DWT_97 0 57#define DWT_53 1 58 59#define liftS lift 60#if 1 61#define W_AM 3 62#define W_AO 0 63#define W_AS 1 64 65#undef liftS 66#define W_BM 1 67#define W_BO 8 68#define W_BS 4 69 70#define W_CM 1 71#define W_CO 0 72#define W_CS 0 73 74#define W_DM 3 75#define W_DO 4 76#define W_DS 3 77#elif 0 78#define W_AM 55 79#define W_AO 16 80#define W_AS 5 81 82#define W_BM 3 83#define W_BO 32 84#define W_BS 6 85 86#define W_CM 127 87#define W_CO 64 88#define W_CS 7 89 90#define W_DM 7 91#define W_DO 8 92#define W_DS 4 93#elif 0 94#define W_AM 97 95#define W_AO 32 96#define W_AS 6 97 98#define W_BM 63 99#define W_BO 512 100#define W_BS 10 101 102#define W_CM 13 103#define W_CO 8 104#define W_CS 4 105 106#define W_DM 15 107#define W_DO 16 108#define W_DS 5 109 110#else 111 112#define W_AM 203 113#define W_AO 64 114#define W_AS 7 115 116#define W_BM 217 117#define W_BO 2048 118#define W_BS 12 119 120#define W_CM 113 121#define W_CO 64 122#define W_CS 7 123 124#define W_DM 227 125#define W_DO 128 126#define W_DS 9 127#endif 128 129#define slice_buffer_get_line(slice_buf, line_num) ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] : ff_slice_buffer_load_line((slice_buf), (line_num))) 130//#define slice_buffer_get_line(slice_buf, line_num) (ff_slice_buffer_load_line((slice_buf), (line_num))) 131 132void ff_slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM * base_buffer); 133void ff_slice_buffer_release(slice_buffer * buf, int line); 134void ff_slice_buffer_flush(slice_buffer * buf); 135void ff_slice_buffer_destroy(slice_buffer * buf); 136IDWTELEM * ff_slice_buffer_load_line(slice_buffer * buf, int line); 137 138void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width); 139void ff_snow_horizontal_compose97i(IDWTELEM *b, int width); 140void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h, int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8); 141 142int ff_w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h); 143int ff_w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h); 144 145void ff_spatial_dwt(int *buffer, int width, int height, int stride, int type, int decomposition_count); 146 147void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line, int type, int decomposition_count); 148void ff_spatial_idwt_buffered_slice(DWTContext *dsp, DWTCompose *cs, slice_buffer * slice_buf, int width, int height, int stride_line, int type, int decomposition_count, int y); 149void ff_spatial_idwt(IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count); 150 151void ff_dwt_init(DWTContext *c); 152void ff_dwt_init_x86(DWTContext *c); 153 154#endif /* AVCODEC_DWT_H */ 155