2 * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
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.
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.
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
21 #ifndef AVCODEC_SNOW_DWT_H
22 #define AVCODEC_SNOW_DWT_H
27 struct MpegEncContext;
30 typedef short IDWTELEM;
32 #define MAX_DECOMPOSITIONS 8
34 typedef struct DWTCompose {
42 /** Used to minimize the amount of memory used in order to
43 * optimize cache performance. **/
44 typedef struct slice_buffer_s {
45 IDWTELEM **line; ///< For use by idwt and predict_slices.
46 IDWTELEM **data_stack; ///< Used for internal purposes.
51 IDWTELEM *base_buffer; ///< Buffer that this structure is caching.
54 struct SnowDWTContext;
56 typedef struct SnowDWTContext {
57 void (*vertical_compose97i)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
58 IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
60 void (*horizontal_compose97i)(IDWTELEM *b, IDWTELEM *temp, int width);
61 void (*inner_add_yblock)(const uint8_t *obmc, const int obmc_stride,
62 uint8_t **block, int b_w, int b_h, int src_x,
63 int src_y, int src_stride, slice_buffer *sb,
64 int add, uint8_t *dst8);
89 #define slice_buffer_get_line(slice_buf, line_num) \
90 ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] \
91 : ff_slice_buffer_load_line((slice_buf), \
94 int ff_slice_buffer_init(slice_buffer *buf, int line_count,
95 int max_allocated_lines, int line_width,
96 IDWTELEM *base_buffer);
97 void ff_slice_buffer_release(slice_buffer *buf, int line);
98 void ff_slice_buffer_flush(slice_buffer *buf);
99 void ff_slice_buffer_destroy(slice_buffer *buf);
100 IDWTELEM *ff_slice_buffer_load_line(slice_buffer *buf, int line);
102 void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2,
103 IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5,
105 void ff_snow_horizontal_compose97i(IDWTELEM *b, IDWTELEM *temp, int width);
106 void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride,
107 uint8_t **block, int b_w, int b_h, int src_x,
108 int src_y, int src_stride, slice_buffer *sb,
109 int add, uint8_t *dst8);
111 int ff_w53_32_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h);
112 int ff_w97_32_c(struct MpegEncContext *v, uint8_t *pix1, uint8_t *pix2, ptrdiff_t line_size, int h);
114 void ff_spatial_dwt(int *buffer, int *temp, int width, int height, int stride,
115 int type, int decomposition_count);
117 void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer *sb, int width,
118 int height, int stride_line, int type,
119 int decomposition_count);
120 void ff_spatial_idwt_buffered_slice(SnowDWTContext *dsp, DWTCompose *cs,
121 slice_buffer *slice_buf, IDWTELEM *temp,
122 int width, int height, int stride_line,
123 int type, int decomposition_count, int y);
124 void ff_spatial_idwt(IDWTELEM *buffer, IDWTELEM *temp, int width, int height,
125 int stride, int type, int decomposition_count);
127 void ff_dwt_init(SnowDWTContext *c);
128 void ff_dwt_init_x86(SnowDWTContext *c);
130 #endif /* AVCODEC_DWT_H */