2 * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of Libav.
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.
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.
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
27 typedef short IDWTELEM;
37 /** Used to minimize the amount of memory used in order to optimize cache performance. **/
38 typedef struct slice_buffer_s {
39 IDWTELEM * * line; ///< For use by idwt and predict_slices.
40 IDWTELEM * * data_stack; ///< Used for internal purposes.
45 IDWTELEM * base_buffer; ///< Buffer that this structure is caching.
48 typedef 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);
54 #define MAX_DECOMPOSITIONS 8
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)))
132 void ff_slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM * base_buffer);
133 void ff_slice_buffer_release(slice_buffer * buf, int line);
134 void ff_slice_buffer_flush(slice_buffer * buf);
135 void ff_slice_buffer_destroy(slice_buffer * buf);
136 IDWTELEM * ff_slice_buffer_load_line(slice_buffer * buf, int line);
138 void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width);
139 void ff_snow_horizontal_compose97i(IDWTELEM *b, int width);
140 void 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);
142 int ff_w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h);
143 int ff_w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h);
145 void ff_spatial_dwt(int *buffer, int width, int height, int stride, int type, int decomposition_count);
147 void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line, int type, int decomposition_count);
148 void 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);
149 void ff_spatial_idwt(IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count);
151 void ff_dwt_init(DWTContext *c);
152 void ff_dwt_init_x86(DWTContext *c);
154 #endif /* AVCODEC_DWT_H */